:root {
  --bg: #f5f6f4;
  --panel: #ffffff;
  --panel-soft: #f8faf7;
  --line: #dfe5df;
  --line-strong: #cbd6ce;
  --text: #111820;
  --muted: #68737d;
  --muted-2: #8c969f;
  --accent: #1f7a3f;
  --accent-dark: #176131;
  --accent-soft: #eaf5ed;
  --accent-softer: #f3faf5;
  --danger: #c4302b;
  --warning: #f3c84b;
  --shadow: 0 14px 36px rgba(15, 23, 42, 0.10);
  --shadow-soft: 0 6px 22px rgba(15, 23, 42, 0.08);
  --score-paper: #fffdf8;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --header-h: 84px;
  --rail-w: 76px;
  --inspector-w: 388px;
}

* { box-sizing: border-box; }

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background: radial-gradient(circle at 30% 0%, #ffffff 0, var(--bg) 42%, #eef2ef 100%);
  color: var(--text);
  font-family: Inter, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  overflow: hidden;
}

button,
select,
input,
textarea {
  font: inherit;
}

button,
label,
select,
input[type="checkbox"],
input[type="range"] {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: default;
  opacity: .45;
}

input[type="range"] {
  accent-color: var(--accent);
}

select,
input[type="number"],
textarea {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  outline: none;
}

select {
  min-height: 38px;
  padding: 0 34px 0 12px;
}


.icon {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.85;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  height: 100vh;
  display: grid;
  grid-template-rows: var(--header-h) minmax(0, 1fr);
  min-width: 0;
}

.player-header {
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(320px, 1.05fr) minmax(410px, .9fr) minmax(390px, 1.2fr);
  gap: 12px;
  align-items: stretch;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-soft);
}

.piece-card,
.transport-card,
.header-metrics {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 4px 15px rgba(15, 23, 42, .045);
}

.piece-card {
  display: grid;
  grid-template-columns: 42px 44px minmax(0, 1fr) auto auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
}

.menu-button {
  color: #52606b;
}

.app-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: linear-gradient(160deg, #1f7a3f, #185f32);
  color: white;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 7px 16px rgba(31, 122, 63, .22);
}

.app-icon .icon { width: 24px; height: 24px; }

.piece-text {
  min-width: 0;
}

#title {
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 18px;
  line-height: 1.2;
  font-weight: 760;
  letter-spacing: -.01em;
}

.status-line {
  margin-top: 3px;
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

#status {
  overflow: hidden;
  text-overflow: ellipsis;
}

#status.is-error {
  color: var(--danger);
  font-weight: 650;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: 0 0 auto;
}

.sample-line {
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.button,
.icon-button,
.primary-play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  text-decoration: none;
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease, transform .08s ease, color .15s ease;
}

.button {
  min-height: 38px;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
}

.button.secondary,
.icon-button.secondary {
  background: #f9fbf9;
}

.button:hover,
.icon-button:hover,
.primary-play:hover,
.file-open-button:hover {
  border-color: rgba(31, 122, 63, .42);
  box-shadow: 0 6px 18px rgba(15, 23, 42, .09);
}

.button:active,
.icon-button:active,
.primary-play:active {
  transform: translateY(1px);
}

.icon-button {
  width: 40px;
  height: 40px;
  padding: 0;
}

.icon-button.ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.only-icon span:not(.sr-only) {
  display: none;
}

.transport-card {
  display: grid;
  grid-template-columns: 40px 56px 40px 40px minmax(130px, 1fr);
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
}

.primary-play {
  width: 54px;
  height: 54px;
  border: 0;
  border-radius: 50%;
  color: white;
  background: radial-gradient(circle at 40% 28%, #43a455 0, #1f7a3f 58%, #176131 100%);
  box-shadow: 0 12px 24px rgba(31, 122, 63, .28);
}

.primary-play .icon {
  width: 27px;
  height: 27px;
  stroke-width: 2.2;
  fill: currentColor;
}

.primary-play.is-playing .icon {
  fill: none;
}

.progress-block {
  min-width: 0;
  display: grid;
  gap: 6px;
  align-items: center;
}

.time-row {
  display: flex;
  justify-content: center;
  gap: 4px;
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 720;
  color: #1b252f;
  white-space: nowrap;
}

#progressInput {
  width: 100%;
  min-width: 0;
}

.header-metrics {
  display: grid;
  grid-template-columns: 76px 74px minmax(120px, .95fr) minmax(118px, .95fr);
  gap: 8px;
  align-items: stretch;
  padding: 8px 10px;
}

.metric-card,
.select-card {
  min-width: 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fcfdfc;
}

.metric-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 7px 8px;
}

.metric-card .icon { color: var(--accent); }

.metric-card strong {
  display: block;
  font-size: 18px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.metric-card span,
.select-card > span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.1;
}

.select-card {
  display: grid;
  gap: 3px;
  padding: 6px 8px 7px;
}

.select-card > span {
  display: flex;
  align-items: center;
  gap: 5px;
  margin: 0;
  font-weight: 650;
  color: #4a5560;
  white-space: nowrap;
}

.select-card > span .icon {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.select-card select {
  width: 100%;
  min-height: 30px;
  height: 30px;
  padding: 0 26px 0 8px;
  border-radius: 9px;
  font-size: 13px;
}

.main-layout {
  min-height: 0;
  min-width: 0;
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr) var(--inspector-w);
  gap: 0;
}

.side-rail {
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  padding: 12px 8px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, .72);
}

.rail-button {
  width: 58px;
  min-height: 58px;
  display: grid;
  place-items: center;
  gap: 4px;
  padding: 6px 4px;
  border: 1px solid transparent;
  border-radius: 14px;
  background: transparent;
  color: #5c6670;
}

.rail-button span {
  display: block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 10.5px;
  line-height: 1.05;
}

.rail-button .icon {
  width: 23px;
  height: 23px;
}

.rail-button:hover,
.rail-button.active {
  border-color: #d7eadc;
  background: var(--accent-softer);
  color: var(--accent);
}

.rail-bottom {
  margin-top: auto;
}

.score-panel {
  position: relative;
  min-width: 0;
  min-height: 0;
  padding: 14px;
  background: linear-gradient(180deg, #fbfcfb, #f2f4f2);
}

.score-viewport {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9), var(--shadow-soft);
}

#score {
  position: relative;
  min-width: 980px;
  min-height: 100%;
  padding: 34px 34px 88px;
  background: var(--score-paper);
}

#score > svg {
  position: relative;
  z-index: 1;
  display: block;
  max-width: none;
}

.cursor-marker {
  position: absolute;
  z-index: 9;
  width: 2px;
  min-height: 18px;
  border-radius: 2px;
  background: rgba(24, 145, 73, .92);
  transform: translateX(-50%);
  pointer-events: none;
  opacity: 0;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .72), 0 0 5px rgba(24, 145, 73, .3);
}

.cursor-marker.is-visible {
  opacity: 1;
}

.three-measure-badge {
  position: sticky;
  left: 50%;
  bottom: 76px;
  z-index: 11;
  display: none;
  width: max-content;
  max-width: calc(100% - 32px);
  margin: 0 auto;
  padding: 7px 12px;
  border: 1px solid rgba(189, 136, 0, .38);
  border-radius: 999px;
  background: rgba(255, 244, 177, .94);
  color: #614800;
  font-size: 13px;
  font-weight: 750;
  box-shadow: 0 5px 18px rgba(77, 58, 0, .14);
  pointer-events: none;
}

.three-measure-badge.is-visible {
  display: block;
}

.my-part-underlay-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.my-part-band {
  position: absolute;
  border-radius: 9px;
  background: rgba(255, 235, 142, .42);
  box-shadow: inset 0 0 0 1px rgba(216, 171, 24, .12);
}

#score .cs-active-note,
#score .cs-active-note * {
  fill: #d92d20 !important;
  stroke: #d92d20 !important;
  filter: drop-shadow(0 0 1.5px rgba(217, 45, 32, .28));
}


.karaoke-score {
  display: none;
  min-width: 0;
  min-height: 100%;
  align-content: start;
  gap: 18px;
  padding: 24px 24px 104px;
  background: var(--score-paper);
}

.three-measure-mode #score {
  display: none;
}

.three-measure-mode .karaoke-score,
.three-measure-building .karaoke-score {
  display: grid;
}

.three-measure-mode > .app-shell .cursor-marker {
  display: none;
}

.karaoke-segment {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(42, 58, 48, .10);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(36, 50, 40, .08);
}

.karaoke-segment svg {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  height: auto;
  background: transparent;
}

.karaoke-underlay-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.karaoke-part-band {
  position: absolute;
  left: 8px;
  right: 8px;
  border-radius: 10px;
  background: rgba(255, 235, 142, .46);
  box-shadow: inset 0 0 0 1px rgba(216, 171, 24, .13);
}

.karaoke-cursor {
  position: absolute;
  z-index: 4;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: rgba(24, 145, 73, .94);
  box-shadow: 0 0 0 1px rgba(255,255,255,.72), 0 0 5px rgba(24,145,73,.28);
  pointer-events: none;
  opacity: 0;
}

.karaoke-cursor.is-visible {
  opacity: 1;
}

.karaoke-segment-label {
  position: absolute;
  z-index: 5;
  top: 8px;
  right: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,.88);
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  pointer-events: none;
}

.karaoke-score .cs-active-note,
.karaoke-score .cs-active-note * {
  fill: #d92d20 !important;
  stroke: #d92d20 !important;
  filter: drop-shadow(0 0 1.5px rgba(217, 45, 32, .28));
}

.score-toolbar {
  position: absolute;
  left: 50%;
  bottom: 28px;
  z-index: 12;
  transform: translateX(-50%);
  min-height: 50px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .94);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  white-space: nowrap;
}

.score-toolbar .icon-button {
  width: 36px;
  height: 36px;
}

.zoom-value,
.page-indicator {
  font-size: 13px;
  font-weight: 680;
  color: #27313a;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--line);
}

.inline-switch,
.switch-tile {
  position: relative;
}

.inline-switch {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #3d4852;
  font-size: 13px;
  font-weight: 650;
}

.inline-switch input,
.switch-tile input,
.icon-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.inline-switch i,
.switch-tile i {
  width: 42px;
  height: 24px;
  position: relative;
  flex: 0 0 auto;
  border-radius: 999px;
  background: #d8dee3;
  transition: background .16s ease;
}

.inline-switch i::after,
.switch-tile i::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 7px rgba(0, 0, 0, .22);
  transition: transform .16s ease;
}

.inline-switch input:checked + i,
.switch-tile input:checked + i {
  background: var(--accent);
}

.inline-switch input:checked + i::after,
.switch-tile input:checked + i::after {
  transform: translateX(18px);
}

.drawer {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  padding: 14px 14px 18px;
  border-left: 1px solid var(--line);
  background: rgba(250, 251, 250, .82);
}

.panel {
  margin: 0 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: 0 8px 22px rgba(15, 23, 42, .06);
  overflow: hidden;
}

.panel > summary {
  list-style: none;
}

.panel > summary::-webkit-details-marker {
  display: none;
}

.panel-summary {
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 14px;
  cursor: pointer;
  color: #1d2935;
  font-weight: 760;
}

.panel-summary > span {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
}

.panel-summary .icon {
  color: var(--accent);
}

.panel-summary .chevron {
  width: 18px;
  height: 18px;
  color: #394550;
  transition: transform .15s ease;
}

.panel:not([open]) .chevron {
  transform: rotate(180deg);
}

.panel__body {
  border-top: 1px solid #edf1ed;
  padding: 14px;
}

.tool-grid {
  display: grid;
  gap: 10px;
}

.tool-tile {
  min-width: 0;
  min-height: 58px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 42px;
  gap: 10px;
  align-items: center;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fbfcfb;
}

.tool-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--accent-softer);
  color: var(--accent);
}

.tool-tile strong,
.tool-tile small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-tile strong {
  font-size: 14px;
}

.tool-tile small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.loop-box {
  display: grid;
  gap: 10px;
  padding: 10px;
  border-radius: 14px;
  background: var(--panel-soft);
  border: 1px solid #edf1ed;
}

.loop-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.loop-fields label,
.field {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.loop-fields span,
.field span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.loop-buttons,
.presets-grid,
.mix-actions,
.two-buttons,
.tempo-presets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.loop-buttons .button,
.presets-grid .button,
.mix-actions .button,
.two-buttons .button,
.tempo-presets .button {
  justify-content: center;
  width: 100%;
}

.preset-button {
  background: #fbfcfb;
}

.tracks-head {
  display: grid;
  grid-template-columns: minmax(88px, 1fr) 40px 40px 34px 34px minmax(92px, 1fr);
  gap: 7px;
  align-items: center;
  padding: 0 8px 9px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 740;
}

.track-list {
  display: grid;
  gap: 8px;
}

.track-row {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(88px, 1fr) 40px 40px 34px 34px minmax(92px, 1fr);
  gap: 7px;
  align-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  transition: background .14s ease, border-color .14s ease, opacity .14s ease;
}

.track-row.is-selected {
  border-color: rgba(201, 150, 0, .46);
  background: linear-gradient(90deg, rgba(255, 239, 151, .58), rgba(255, 250, 221, .62));
  box-shadow: inset 4px 0 0 rgba(218, 164, 0, .76);
}

.track-row.is-muted {
  opacity: .76;
}

.track-row.is-solo {
  border-color: rgba(31, 122, 63, .46);
  box-shadow: inset 0 0 0 1px rgba(31, 122, 63, .14);
}

.track-identity {
  min-width: 0;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
}

.track-initial {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  border: 1px solid #cfe5d4;
  background: #f3faf5;
  color: var(--accent);
  font-weight: 820;
  font-size: 14px;
}

.track-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 750;
}

.track-sub {
  margin-top: 1px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
  font-size: 11px;
}

.track-status {
  display: none;
}

.icon-toggle {
  position: relative;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcfb;
  color: var(--accent);
  cursor: pointer;
}

.icon-toggle__box {
  display: grid;
  place-items: center;
}

.icon-toggle .icon {
  width: 19px;
  height: 19px;
}

.icon-toggle:has(input:not(:checked)) {
  color: var(--muted-2);
  background: #f5f7f6;
}

.track-mini-btn {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: #3b4650;
  font-size: 13px;
  font-weight: 850;
}

.track-mini-btn.active {
  border-color: rgba(31, 122, 63, .46);
  background: var(--accent);
  color: #fff;
}

.track-volume {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(58px, 1fr) 42px;
  gap: 6px;
  align-items: center;
}

.track-volume input {
  width: 100%;
  min-width: 0;
}

.track-volume span {
  text-align: right;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.track-more {
  grid-column: 1 / -1;
  margin-top: 2px;
}

.track-more summary {
  width: fit-content;
  margin-left: auto;
  padding: 2px 8px;
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  list-style: none;
}

.track-more summary::-webkit-details-marker { display: none; }

.track-more-body {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 70px;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.mix-actions {
  margin-top: 10px;
}

.tempo-row {
  display: grid;
  grid-template-columns: auto auto 36px 36px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}

.tempo-row strong {
  min-width: 44px;
  font-size: 22px;
  font-variant-numeric: tabular-nums;
}

.tempo-row .icon-button {
  width: 34px;
  height: 34px;
}

.tempo-panel input[type="range"] {
  width: 100%;
}

.tempo-presets {
  margin-top: 10px;
  grid-template-columns: repeat(4, 1fr);
}

.export-body {
  display: grid;
  gap: 10px;
}

.recordings-body {
  display: grid;
  gap: 10px;
}

.recordings-body p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.recordings-list {
  display: grid;
  gap: 6px;
}

.recording-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.recording-item:hover,
.recording-item:focus-visible,
.recording-item.is-current {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.recording-item .icon {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.recording-item-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  font-weight: 700;
}

.recording-item-meta {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.recording-audio {
  width: 100%;
}

.compact-check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #3d4852;
  font-size: 14px;
  font-weight: 650;
}

.compact-check input {
  accent-color: var(--accent);
}

.export-button {
  min-height: 44px;
  justify-content: center;
  border-color: rgba(31, 122, 63, .25);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.hotkeys {
  display: grid;
  gap: 8px;
}

.hotkeys > div {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

kbd {
  display: inline-flex;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #f7f8f7;
  padding: 3px 7px;
  font: 12px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #2f3942;
}

.hotkeys span {
  color: var(--muted);
  font-size: 13px;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 100;
  width: min(520px, calc(100vw - 36px));
  border: 1px solid #efc0bd;
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.toast.hidden {
  display: none;
}

.toast__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid #f2d6d4;
  color: var(--danger);
}

.toast__body {
  padding: 12px 14px;
  color: #394550;
}

.toast details {
  padding: 0 14px 14px;
}

.toast textarea {
  width: 100%;
  min-height: 120px;
  margin-top: 8px;
  padding: 10px;
  resize: vertical;
  font: 12px/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (max-width: 1500px) {
  :root { --inspector-w: 360px; }

  .player-header {
    grid-template-columns: minmax(285px, 1fr) minmax(360px, .9fr) minmax(330px, 1fr);
  }

  .file-open-button span,
  .upload-button span,
  .sound-card {
    display: none;
  }

  .piece-card {
    grid-template-columns: 42px 44px minmax(0, 1fr) auto auto;
  }

  .header-metrics {
    grid-template-columns: 70px 70px minmax(116px, 1fr);
  }
}

@media (max-width: 1180px) {
  :root {
    --header-h: auto;
    --inspector-w: 330px;
    --rail-w: 66px;
  }

  .app-shell {
    grid-template-rows: auto minmax(0, 1fr);
  }

  .player-header {
    grid-template-columns: 1fr;
  }

  .main-layout {
    grid-template-columns: var(--rail-w) minmax(0, 1fr) var(--inspector-w);
  }
}

@media (max-width: 900px) {
  body { overflow: auto; }

  .app-shell {
    height: auto;
    min-height: 100vh;
  }

  .main-layout {
    grid-template-columns: 1fr;
  }

  .side-rail {
    display: none;
  }

  .score-panel {
    min-height: 68vh;
  }

  .drawer {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .score-toolbar {
    max-width: calc(100% - 28px);
    overflow: auto;
    justify-content: flex-start;
  }
}

/* Iteration: metronome controls, measure jumps, functional rail, score seeking. */
.header-metrics {
  grid-template-columns: 70px 70px 128px minmax(118px, .95fr) minmax(112px, .9fr);
}

.jump-card {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px;
  align-content: center;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fcfdfc;
}

.jump-button {
  min-width: 0;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fff;
  color: #24313d;
  font-size: 13px;
  font-weight: 860;
  line-height: 1;
}

.jump-button:hover {
  border-color: rgba(31, 122, 63, .42);
  background: var(--accent-softer);
  color: var(--accent-dark);
}

.metronome-box {
  display: grid;
  gap: 9px;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid #edf1ed;
  background: var(--panel-soft);
}

.metronome-volume-field {
  grid-template-columns: minmax(0, 1fr) 54px;
  align-items: center;
}

.metronome-volume-field span {
  grid-column: 1 / -1;
}

.metronome-volume-field input {
  width: 100%;
  min-width: 0;
}

.metronome-volume-field strong {
  text-align: right;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.metronome-hint {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.notes-body textarea {
  width: 100%;
  min-height: 128px;
  padding: 10px 12px;
  resize: vertical;
  line-height: 1.4;
}

#score svg [class*="notehead"],
#score svg [class*="noteHead"],
#score svg [class*="note-head"],
#score svg .vf-notehead,
#score svg .vf-notehead-filled {
  cursor: pointer;
}

.score-viewport:focus {
  outline: 2px solid rgba(31, 122, 63, .22);
  outline-offset: -3px;
}

@media (max-width: 1500px) {
  .header-metrics {
    grid-template-columns: 66px 66px 116px minmax(116px, 1fr);
  }

  .jump-card {
    padding: 5px;
  }

  .jump-button {
    height: 29px;
    font-size: 12px;
  }
}

@media (max-width: 1180px) {
  .header-metrics {
    grid-template-columns: 70px 70px 128px minmax(130px, 1fr) minmax(120px, 1fr);
  }

  .sound-card {
    display: grid;
  }
}

/* Safe score re-render state: visibility controls are temporarily locked so
   a second filtered render cannot start before the first one is complete. */
.track-row.is-score-rendering {
  opacity: .68;
}

.icon-toggle input:disabled + .icon-toggle__box {
  cursor: wait;
  opacity: .55;
}



/* Rehearsal polish: persistent own-part marker and three-measure mode. */
.three-measure-mode .three-measure-tile {
  border-color: rgba(201, 150, 0, .42);
  background: rgba(255, 244, 177, .42);
}

/* Rehearsal control center: compact top mixer, readiness and per-part instruments. */
:root {
  --quick-mixer-h: 116px;
}

.app-shell {
  grid-template-rows: var(--header-h) var(--quick-mixer-h) minmax(0, 1fr);
}

.player-header {
  grid-template-columns: minmax(300px, 1fr) minmax(350px, .88fr) minmax(540px, 1.45fr);
}

.piece-card {
  grid-template-columns: 42px 44px minmax(0, 1fr) auto;
}

.readiness-bar {
  display: grid;
  gap: 3px;
  margin-top: 5px;
}

.readiness-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1;
}

.readiness-meta strong {
  color: #43505a;
  font-variant-numeric: tabular-nums;
}

.readiness-bar progress {
  width: 100%;
  height: 5px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: #e8ece9;
  accent-color: var(--accent);
}

.readiness-bar progress::-webkit-progress-bar {
  border-radius: 999px;
  background: #e8ece9;
}

.readiness-bar progress::-webkit-progress-value {
  border-radius: 999px;
  background: linear-gradient(90deg, #55a766, var(--accent));
  transition: width .2s ease;
}

.readiness-bar progress::-moz-progress-bar {
  border-radius: 999px;
  background: linear-gradient(90deg, #55a766, var(--accent));
}

.readiness-bar.is-error progress::-webkit-progress-value,
.readiness-bar.is-error progress::-moz-progress-bar {
  background: var(--danger);
}

.readiness-bar.is-busy .readiness-meta strong {
  color: var(--accent-dark);
}

.header-metrics {
  grid-template-columns: 66px 66px 118px minmax(120px, 1.1fr) minmax(116px, 1fr) 88px;
}

.header-toggle-card {
  position: relative;
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr 38px;
  align-items: center;
  gap: 6px;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fcfdfc;
  color: #4a5560;
  cursor: pointer;
}

.header-toggle-card > span {
  display: grid;
  justify-items: center;
  gap: 2px;
  font-size: 11px;
  font-weight: 700;
}

.header-toggle-card > span .icon {
  width: 17px;
  height: 17px;
  color: var(--accent);
}

.header-toggle-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.header-toggle-card i {
  position: relative;
  width: 38px;
  height: 22px;
  border-radius: 999px;
  background: #d8dee3;
  transition: background .16s ease;
}

.header-toggle-card i::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 7px rgba(0,0,0,.2);
  transition: transform .16s ease;
}

.header-toggle-card input:checked + i {
  background: var(--accent);
}

.header-toggle-card input:checked + i::after {
  transform: translateX(16px);
}

.quick-mixer-shell {
  z-index: 16;
  min-width: 0;
  display: grid;
  grid-template-columns: 174px minmax(0, 1fr);
  gap: 10px;
  align-items: stretch;
  padding: 8px 14px 9px;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 249, 247, .96);
  box-shadow: 0 5px 15px rgba(15,23,42,.04);
}

.quick-mixer-title {
  display: grid;
  align-content: center;
  gap: 7px;
  min-width: 0;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
}

.quick-mixer-title > span {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #24313c;
  font-size: 13px;
}

.quick-mixer-title > span .icon {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.quick-mixer-title label {
  display: grid;
  gap: 3px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
}

.quick-mixer-title select {
  width: 100%;
  min-height: 28px;
  height: 28px;
  padding-left: 7px;
  border-radius: 8px;
  font-size: 11px;
}

.quick-mixer {
  min-width: 0;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(152px, 1fr);
  gap: 8px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
}

.quick-mixer-empty {
  align-self: center;
  color: var(--muted);
  font-size: 13px;
}

.quick-track {
  min-width: 152px;
  display: grid;
  grid-template-rows: 28px 28px 22px;
  gap: 4px;
  padding: 6px 7px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
  transition: opacity .15s ease, border-color .15s ease, box-shadow .15s ease, background .15s ease;
}

.quick-track.is-selected {
  border-color: rgba(201, 150, 0, .48);
  background: linear-gradient(180deg, rgba(255, 247, 197, .68), #fff 72%);
  box-shadow: inset 3px 0 0 rgba(218, 164, 0, .72);
}

.quick-track.is-muted { opacity: .7; }
.quick-track.is-hidden-part { filter: grayscale(.75); opacity: .58; }

.quick-track-head {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 27px 27px;
  gap: 4px;
}

.quick-track-name,
.quick-mini-btn {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: #26333d;
  font-size: 11px;
  font-weight: 780;
}

.quick-track-name {
  overflow: hidden;
  padding: 0 7px;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-mini-btn.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.quick-eye-btn::before { content: "◉"; }
.quick-track.is-hidden-part .quick-eye-btn::before { content: "○"; }

.quick-instrument-select {
  width: 100%;
  min-height: 28px;
  height: 28px;
  padding: 0 24px 0 7px;
  border-radius: 8px;
  font-size: 11px;
}

.quick-volume {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(50px, 1fr) 35px;
  gap: 5px;
  align-items: center;
}

.quick-volume input { width: 100%; min-width: 0; }
.quick-volume span {
  text-align: right;
  color: var(--muted);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.primary-play.is-preparing,
.primary-play.is-counting {
  animation: play-pulse .9s ease-in-out infinite alternate;
}

.primary-play.is-preparing::after {
  content: "";
  position: absolute;
  width: 62px;
  height: 62px;
  border: 2px solid rgba(31,122,63,.25);
  border-top-color: rgba(255,255,255,.9);
  border-radius: 50%;
  animation: play-spin .8s linear infinite;
}

.primary-play { position: relative; }

@keyframes play-spin { to { transform: rotate(360deg); } }
@keyframes play-pulse { to { box-shadow: 0 13px 30px rgba(31,122,63,.46); } }

.tracks-head,
.track-row {
  grid-template-columns: minmax(88px, 1fr) 40px 40px 34px 34px minmax(90px, .85fr) minmax(112px, 1fr);
}

.track-instrument-select {
  width: 100%;
  min-height: 34px;
  height: 34px;
  padding: 0 26px 0 8px;
  border-radius: 10px;
  font-size: 12px;
}

.layout-tile {
  grid-template-columns: 38px minmax(0, 1fr);
}

.compact-check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #43505a;
  font-size: 12px;
  font-weight: 650;
}

.compact-check input { accent-color: var(--accent); }

/* Exact staff underlay: all five staff lines plus one staff space above and below. */
.my-part-band,
.karaoke-part-band {
  border-radius: 3px;
  background: rgba(255, 236, 153, .40);
  box-shadow: inset 0 0 0 1px rgba(210, 168, 34, .08);
}

.my-part-band {
  mix-blend-mode: multiply;
}

.cs-condensed-part-focus {
  opacity: 1 !important;
  /* Yellow belongs to the whole visual staff marker. Do not add a yellow
     halo/circle around individual noteheads. */
  filter: none !important;
}

.cs-condensed-part-dim {
  /* Gray is a color, not a thinner/transparent engraving. */
  opacity: 1 !important;
  filter: grayscale(1) !important;
}

.cs-condensed-part-focus path,
.cs-condensed-part-focus rect,
.cs-condensed-part-focus ellipse,
.cs-condensed-part-focus polygon {
  fill: #111 !important;
  stroke: #111 !important;
}

.cs-condensed-part-dim path,
.cs-condensed-part-dim rect,
.cs-condensed-part-dim ellipse,
.cs-condensed-part-dim polygon {
  fill: #68727b !important;
  stroke: #68727b !important;
}

.tuning-cue-settings .muted,
.experimental-display-mode .system-view-note {
  margin: 8px 0 0;
  font-size: 11px;
  line-height: 1.4;
}

.display-mode-condensed .selected-part-underlay-band {
  /* The condensed staff is shared by several semantic singers, but the
     whole staff is still the singer's visual line. Note-level black/gray
     classes distinguish the divisi inside this yellow band. */
  background-color: var(--marker-fill);
  box-shadow: inset 0 0 0 1px var(--marker-edge-soft);
  mix-blend-mode: multiply;
}

@media (max-width: 1500px) {
  :root { --quick-mixer-h: 108px; }
  .player-header {
    grid-template-columns: minmax(278px, .95fr) minmax(330px, .84fr) minmax(475px, 1.35fr);
  }
  .header-metrics {
    grid-template-columns: 60px 60px 108px minmax(112px, 1fr) minmax(104px, .9fr) 78px;
  }
  .quick-mixer-shell { grid-template-columns: 158px minmax(0, 1fr); }
  .quick-mixer { grid-auto-columns: minmax(142px, 1fr); }
  .quick-track { min-width: 142px; }
}

@media (max-width: 1180px) {
  :root { --quick-mixer-h: auto; }
  .app-shell { grid-template-rows: auto auto minmax(0, 1fr); }
  .player-header { grid-template-columns: 1fr; }
  .header-metrics {
    grid-template-columns: 66px 66px 118px minmax(130px, 1fr) minmax(122px, 1fr) 88px;
  }
  .quick-mixer-shell { grid-template-columns: 150px minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .quick-mixer-shell {
    grid-template-columns: 1fr;
    position: sticky;
    top: 0;
  }
  .quick-mixer-title {
    grid-template-columns: auto minmax(150px, 1fr);
    align-items: center;
  }
  .quick-mixer { grid-auto-columns: minmax(145px, 70vw); }
  .header-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.custom-presets {
  display: grid;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #edf1ed;
}

.custom-presets > strong {
  color: #26333d;
  font-size: 13px;
}

.custom-presets > p {
  margin: -3px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
}

.custom-preset-save,
.custom-preset-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 7px;
}

.custom-preset-actions {
  grid-template-columns: minmax(0, 1fr) auto auto;
}

.custom-preset-save input,
.custom-preset-actions select {
  width: 100%;
  min-height: 36px;
  padding: 0 10px;
}

.danger-button {
  color: #8f2926;
}

.danger-button:hover {
  border-color: rgba(196,48,43,.35);
  background: #fff7f6;
}

/* ==========================================================================
   Score-first interface — keep the score dominant and reveal controls on demand.
   ========================================================================== */
:root {
  --header-h: 68px;
  --drawer-w: 400px;
  --surface: rgba(255, 255, 255, .96);
  --surface-soft: #f7f9f7;
  --surface-hover: #f0f6f1;
}

.app-shell {
  grid-template-rows: var(--header-h) minmax(0, 1fr);
}

.player-header {
  position: relative;
  z-index: 40;
  display: grid;
  grid-template-columns: minmax(235px, .85fr) minmax(390px, 1.2fr) auto;
  gap: 10px;
  height: var(--header-h);
  padding: 7px 12px 8px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 3px 18px rgba(15, 23, 42, .07);
  backdrop-filter: blur(16px);
}

.piece-card,
.transport-card,
.header-controls {
  min-width: 0;
  border: 0;
  border-radius: 14px;
  box-shadow: none;
}

.piece-card {
  grid-template-columns: 38px minmax(0, 1fr) auto;
  gap: 9px;
  padding: 4px 5px;
  background: transparent;
}

.app-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 5px 14px rgba(31, 122, 63, .18);
}

.app-icon .icon { width: 21px; height: 21px; }

#title {
  font-size: 15px;
  font-weight: 760;
}

.status-line {
  margin-top: 2px;
  gap: 5px;
  font-size: 11.5px;
}

.file-open-button {
  width: 36px;
  height: 36px;
  min-height: 36px;
  padding: 0;
  border-radius: 10px;
  color: #43505a;
}

.file-open-button span { display: none; }

.transport-card {
  grid-template-columns: 32px 46px 32px 32px minmax(160px, 1fr);
  gap: 5px;
  padding: 4px 8px;
  border: 1px solid #e3e8e3;
  background: var(--surface-soft);
}

.transport-card .icon-button {
  width: 32px;
  height: 32px;
}

.primary-play {
  width: 44px;
  height: 44px;
  box-shadow: 0 8px 18px rgba(31, 122, 63, .24);
}

.primary-play .icon { width: 22px; height: 22px; }

.progress-block { gap: 2px; }
.time-row { justify-content: flex-start; font-size: 12.5px; }
#progressInput { height: 18px; }

.header-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  padding: 3px 0;
  background: transparent;
}

.header-chip,
.header-action,
.header-field,
.header-metronome-toggle {
  min-width: 0;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  color: #26323c;
}

.header-chip,
.header-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 10px;
  white-space: nowrap;
}

.header-chip:hover,
.header-action:hover,
.header-field:hover,
.header-metronome-toggle:hover {
  border-color: #bfd7c5;
  background: var(--surface-hover);
}

.header-chip .icon,
.header-action .icon,
.header-metronome-toggle .icon {
  width: 17px;
  height: 17px;
  color: var(--accent);
}

.header-chip .chip-value,
.measure-chip strong {
  font-size: 15px;
  font-weight: 780;
  font-variant-numeric: tabular-nums;
}

.header-chip .chip-unit,
.measure-chip span {
  color: var(--muted);
  font-size: 10px;
  text-transform: lowercase;
}

.measure-chip {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.measure-chip > .icon { display: none; }
.measure-chip > div { display: flex; align-items: baseline; gap: 4px; }

.header-field {
  width: 174px;
  display: grid;
  grid-template-rows: 13px 23px;
  gap: 0;
  padding: 4px 7px;
}

.header-field > span {
  margin: 0;
  color: var(--muted);
  font-size: 9.5px;
  font-weight: 700;
  line-height: 1;
}

.header-field select {
  width: 100%;
  min-height: 22px;
  height: 22px;
  padding: 0 22px 0 0;
  border: 0;
  border-radius: 0;
  background-color: transparent;
  font-size: 12px;
  font-weight: 700;
}

.header-metronome-toggle {
  position: relative;
  width: 42px;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.header-metronome-toggle b { display: none; }
.header-metronome-toggle input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.header-metronome-toggle i { display: none; }
.header-metronome-toggle:has(input:checked) {
  border-color: #acd1b5;
  background: var(--accent-soft);
  color: var(--accent-dark);
  box-shadow: inset 0 0 0 1px rgba(31, 122, 63, .08);
}

.header-action {
  min-width: 42px;
  font-size: 12px;
  font-weight: 720;
}

.header-readiness {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  margin: 0;
  pointer-events: none;
}
.header-readiness .readiness-meta { display: none; }
.header-readiness progress {
  display: block;
  width: 100%;
  height: 3px;
  border-radius: 0;
}

/* Mixer is available instantly but never consumes permanent score space. */
.mixer-popover {
  position: fixed;
  z-index: 70;
  top: calc(var(--header-h) + 8px);
  left: 50%;
  width: min(1180px, calc(100vw - 28px));
  max-height: min(420px, calc(100vh - var(--header-h) - 24px));
  padding: 12px;
  border: 1px solid #d9e1da;
  border-radius: 17px;
  background: var(--surface);
  box-shadow: 0 22px 60px rgba(15, 23, 42, .20);
  opacity: 0;
  transform: translate(-50%, -10px) scale(.985);
  pointer-events: none;
  transition: opacity .15s ease, transform .15s ease;
  overflow: auto;
}

.mixer-popover.is-open {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
  pointer-events: auto;
}

.quick-mixer-title {
  position: sticky;
  top: -12px;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 36px;
  gap: 10px;
  align-items: center;
  min-height: 52px;
  margin: -12px -12px 10px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
}

.mixer-popover-heading {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
}
.mixer-popover-heading > .icon { color: var(--accent); }
.mixer-popover-heading strong,
.mixer-popover-heading small { display: block; }
.mixer-popover-heading strong { font-size: 15px; }
.mixer-popover-heading small { margin-top: 1px; color: var(--muted); font-size: 11px; }

.mixer-all-instrument {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 11px;
}
.mixer-all-instrument select { min-height: 32px; height: 32px; font-size: 12px; }

.quick-mixer {
  display: grid;
  grid-template-columns: repeat(3, minmax(250px, 1fr));
  gap: 8px;
  padding: 0;
  overflow: visible;
}

.quick-track {
  min-width: 0;
  min-height: 70px;
  display: grid;
  grid-template-columns: minmax(105px, .8fr) minmax(130px, 1.2fr);
  grid-template-rows: 30px 28px;
  gap: 5px 8px;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: none;
}

.quick-track.is-selected {
  border-color: rgba(201, 150, 0, .40);
  background: linear-gradient(90deg, rgba(255, 244, 190, .55), #fff 55%);
  box-shadow: inset 3px 0 0 rgba(218, 164, 0, .66);
}

.quick-track-head {
  grid-column: 1;
  grid-row: 1 / 3;
  grid-template-columns: minmax(0, 1fr) 27px 27px;
  gap: 4px;
  align-content: center;
}

.quick-track-name,
.quick-mini-btn {
  min-height: 28px;
  height: 28px;
  border-radius: 8px;
}
.quick-track-name { padding: 0 7px; font-size: 12px; text-align: left; }
.quick-mini-btn { width: 27px; font-size: 11px; }
.quick-instrument-select {
  grid-column: 2;
  grid-row: 1;
  width: 100%;
  min-height: 28px;
  height: 28px;
  padding-left: 8px;
  border-radius: 8px;
  font-size: 11px;
}
.quick-volume {
  grid-column: 2;
  grid-row: 2;
  grid-template-columns: minmax(60px, 1fr) 34px;
  gap: 5px;
}
.quick-volume span { font-size: 10px; }

/* The score owns the canvas. */
.main-layout {
  min-width: 0;
  min-height: 0;
  display: block;
}

.score-panel {
  width: 100%;
  height: 100%;
  padding: 9px;
  background: #eef1ee;
}

.score-viewport {
  border-radius: 13px;
  box-shadow: 0 5px 22px rgba(15, 23, 42, .08);
}

#score { padding: 26px 28px 72px; }

.score-toolbar {
  right: 18px;
  left: auto;
  bottom: 17px;
  transform: none;
  width: auto;
  padding: 5px 8px;
  border-radius: 12px;
  background: rgba(255,255,255,.90);
  box-shadow: 0 5px 18px rgba(15,23,42,.10);
  backdrop-filter: blur(10px);
}
.score-toolbar > button:disabled,
.score-toolbar > .zoom-value,
.score-toolbar > .page-indicator,
.score-toolbar > .toolbar-divider { display: none; }

/* Settings are a real drawer, not a permanent third column. */
.settings-drawer {
  position: fixed;
  z-index: 80;
  top: var(--header-h);
  right: 0;
  bottom: 0;
  width: min(var(--drawer-w), calc(100vw - 20px));
  padding: 0;
  border-left: 1px solid var(--line);
  background: #fff;
  box-shadow: -18px 0 46px rgba(15, 23, 42, .16);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(102%);
  transition: transform .18s ease;
}
.settings-drawer.is-open { transform: translateX(0); }

.drawer-backdrop {
  position: fixed;
  z-index: 75;
  inset: var(--header-h) 0 0;
  display: block;
  border: 0;
  background: rgba(22, 29, 25, .18);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
.drawer-backdrop.is-open { opacity: 1; pointer-events: auto; }

.drawer-header {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
  padding: 10px 12px 9px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
}
.drawer-header strong,
.drawer-header span { display: block; }
.drawer-header strong { font-size: 16px; }
.drawer-header span { margin-top: 1px; color: var(--muted); font-size: 11px; }

.drawer-tabs {
  position: sticky;
  top: 60px;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3px;
  padding: 7px 8px;
  border-bottom: 1px solid var(--line);
  background: rgba(250,252,250,.97);
  backdrop-filter: blur(10px);
}
.drawer-tab {
  min-width: 0;
  min-height: 34px;
  padding: 0 5px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: #59646e;
  font-size: 11px;
  font-weight: 720;
}
.drawer-tab:hover { background: #edf4ef; color: var(--accent-dark); }
.drawer-tab.is-active { background: var(--accent-soft); color: var(--accent-dark); }

.settings-drawer .panel,
.view-settings-card {
  margin: 0;
  border: 0;
  border-bottom: 1px solid #e8ece8;
  border-radius: 0;
  box-shadow: none;
}
.settings-drawer .panel > summary {
  min-height: 48px;
  padding: 11px 16px;
}
.settings-drawer .panel__body { padding: 0 16px 16px; }
.view-settings-card { padding: 14px 16px; }

.settings-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(140px, .9fr);
  gap: 12px;
  align-items: center;
  min-height: 42px;
}
.settings-field > span {
  color: #36434d;
  font-size: 13px;
  font-weight: 700;
}
.settings-field select { width: 100%; }

.settings-control {
  display: grid;
  gap: 7px;
  margin-bottom: 10px;
  padding: 9px;
  border: 1px solid #e7ece8;
  border-radius: 12px;
  background: var(--surface-soft);
}
.settings-control-title { color: var(--muted); font-size: 11px; font-weight: 720; }
.jump-settings .jump-card {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
  padding: 0;
  border: 0;
  background: transparent;
}
.jump-settings .jump-button { height: 32px; }

/* Old rail was the main source of duplicate navigation. */
.side-rail { display: none !important; }

@media (max-width: 1260px) {
  .player-header { grid-template-columns: minmax(200px, .7fr) minmax(350px, 1.1fr) auto; }
  .header-action span { display: none; }
  .header-action { width: 42px; padding: 0; }
  .header-field { width: 145px; }
  .chip-unit { display: none; }
  .quick-mixer { grid-template-columns: repeat(2, minmax(250px, 1fr)); }
}

@media (max-width: 980px) {
  :root { --header-h: 118px; }
  .player-header {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: 48px 54px;
    height: var(--header-h);
  }
  .piece-card { grid-column: 1; grid-row: 1; }
  .header-controls { grid-column: 2; grid-row: 1; }
  .transport-card { grid-column: 1 / -1; grid-row: 2; }
  .measure-chip { display: none; }
  .quick-mixer { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  :root { --header-h: 112px; }
  .player-header { padding-inline: 7px; gap: 5px; }
  .app-icon { display: none; }
  .piece-card { grid-template-columns: minmax(0,1fr) auto; }
  .status-line .sample-line, .status-dot { display: none; }
  .header-field { width: 128px; }
  .tempo-chip, .measure-chip, .header-metronome-toggle { display: none; }
  .transport-card { grid-template-columns: 28px 42px 28px 28px minmax(110px,1fr); }
  .mixer-popover { width: calc(100vw - 12px); top: calc(var(--header-h) + 4px); }
  .settings-drawer { width: 100vw; }
  #score { padding-inline: 15px; }
}

/* Mixer popover must stack its heading above the track grid; the legacy shell
   was a two-column permanent strip. */
.mixer-popover {
  display: block;
  grid-template-columns: none;
  gap: 0;
  align-items: initial;
}
.mixer-popover .quick-mixer {
  grid-auto-flow: row;
  grid-auto-columns: auto;
  overflow: visible;
}

/* ========================================================================
   APPROVED SCORE-FIRST UI · 2026-07-27
   The legacy stylesheet remains above for score-engine compatibility. This
   block owns the application shell, contextual controls and visual hierarchy.
   ======================================================================== */
:root {
  --ui-bg: #f4f6f4;
  --ui-surface: rgba(255,255,255,.96);
  --ui-surface-strong: #fff;
  --ui-border: #dfe5df;
  --ui-border-strong: #cfd9d1;
  --ui-text: #172019;
  --ui-muted: #6d776f;
  --ui-green: #168445;
  --ui-green-dark: #0f6b37;
  --ui-green-soft: #e9f5ed;
  --ui-yellow: rgba(255, 226, 112, .34);
  --ui-red: #e5332a;
  --ui-purple: #7657df;
  --ui-shadow: 0 18px 50px rgba(29, 47, 34, .14), 0 2px 10px rgba(29, 47, 34, .07);
  --ui-shadow-soft: 0 8px 26px rgba(29, 47, 34, .09);
  --ui-radius: 14px;
  --ui-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; }
body {
  overflow: hidden;
  background: var(--ui-bg);
  color: var(--ui-text);
  font-family: var(--ui-font);
  font-size: 14px;
}
button, input, select, textarea { font: inherit; color: inherit; }
button, select, input[type="range"], input[type="checkbox"], label[for], .button { cursor: pointer; }
button:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid rgba(22,132,69,.22);
  outline-offset: 2px;
}
button:disabled { cursor: not-allowed; opacity: .48; }
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

.approved-ui.app-shell {
  height: 100dvh;
  display: grid;
  grid-template-rows: 72px 0 minmax(0, 1fr) 74px;
  gap: 0;
  padding: 10px 12px 12px;
  background: linear-gradient(180deg, #f8faf8 0%, #f1f4f1 100%);
}

/* Document bar ---------------------------------------------------------- */
.document-bar {
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto minmax(470px, 1fr);
  align-items: center;
  gap: 18px;
  min-width: 0;
  padding: 10px 14px;
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  background: var(--ui-surface);
  box-shadow: 0 2px 12px rgba(26, 45, 31, .055);
  backdrop-filter: blur(14px);
}
.document-identity { display: flex; align-items: center; gap: 12px; min-width: 0; }
.document-icon {
  flex: 0 0 auto; width: 38px; height: 38px; display:grid; place-items:center;
  border-radius: 11px; color: var(--ui-green); background: var(--ui-green-soft);
}
.document-copy { min-width: 0; }
.document-title-row { display:flex; align-items:center; gap:10px; min-width:0; }
.document-title-row h1 { margin:0; max-width: min(360px, 32vw); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:16px; line-height:1.2; font-weight:760; }
.document-copy p { margin:4px 0 0; max-width: min(440px, 36vw); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; color:var(--ui-muted); font-size:12px; }
.save-state { display:inline-flex; align-items:center; gap:6px; color:var(--ui-muted); font-size:12px; white-space:nowrap; }
.save-dot { width:8px; height:8px; border-radius:50%; background:#aeb7b0; box-shadow:0 0 0 3px rgba(174,183,176,.15); }
body:has(#readinessBar.is-ready) .save-dot { background:var(--ui-green); box-shadow:0 0 0 3px rgba(22,132,69,.14); }

.open-score-button, .state-button, .icon-button, .compact-state, .transport-icon, .transport-stop,
.context-popover button, .mixer-popover button, .more-drawer button {
  border: 1px solid var(--ui-border);
  background: #fff;
  border-radius: 10px;
  color: var(--ui-text);
  transition: border-color .15s ease, background .15s ease, color .15s ease, box-shadow .15s ease, transform .12s ease;
}
.open-score-button:hover, .state-button:hover, .icon-button:hover, .compact-state:hover,
.context-popover button:hover, .mixer-popover button:hover, .more-drawer button:hover {
  border-color: #bfcac1; background: #fbfdfb; box-shadow: 0 4px 14px rgba(28,45,32,.07);
}
.open-score-button:active, .state-button:active, .icon-button:active, .compact-state:active { transform: translateY(1px); }
.open-score-button { height: 42px; display:inline-flex; align-items:center; gap:9px; padding:0 14px; font-weight:650; white-space:nowrap; }
.open-score-button input { position:absolute; width:1px; height:1px; opacity:0; pointer-events:none; }
.open-score-label-mobile { display: none; }
.document-actions { justify-self:end; display:flex; align-items:center; gap:8px; min-width:0; }
.state-button { height:42px; display:inline-flex; align-items:center; gap:7px; padding:0 12px; font-weight:650; white-space:nowrap; }
.state-button[aria-expanded="true"], .icon-button[aria-expanded="true"], .compact-state[aria-expanded="true"] { border-color:rgba(22,132,69,.45); background:var(--ui-green-soft); color:var(--ui-green-dark); }
.state-icon-button { width:42px; height:42px; display:grid; place-items:center; padding:0; }
.chevron-text { width:14px; height:14px; color:var(--ui-muted); stroke-width:1.8; }

/* Readiness becomes a real loading surface while busy ------------------- */
.readiness-strip { display:none; }
.readiness-strip.is-busy {
  position: fixed; z-index: 90; inset: 92px 12px 88px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:18px;
  border:1px solid var(--ui-border); border-radius:var(--ui-radius);
  background:rgba(248,250,248,.94); backdrop-filter:blur(12px);
}
.readiness-strip.is-busy::before {
  content:""; width:44px; height:44px; border:4px solid rgba(22,132,69,.16); border-top-color:var(--ui-green); border-radius:50%; animation:ui-spin .8s linear infinite;
}
.readiness-strip-copy { display:flex; flex-direction:column; align-items:center; gap:7px; font-size:14px; color:var(--ui-muted); }
.readiness-strip-copy span { font-size:18px; color:var(--ui-text); font-weight:760; }
.readiness-strip-copy strong { color:var(--ui-green); font-size:30px; }
.readiness-strip progress { width:min(680px, 70vw); height:8px; border:0; border-radius:999px; overflow:hidden; background:#e5ebe6; }
.readiness-strip progress::-webkit-progress-bar { background:#e5ebe6; }
.readiness-strip progress::-webkit-progress-value { background:var(--ui-green); }
.readiness-strip progress::-moz-progress-bar { background:var(--ui-green); }
.readiness-strip.is-error { display:flex; }
.readiness-strip.is-error::before { animation:none; border:0; content:"!"; display:grid; place-items:center; color:#fff; background:#c43c35; font-size:28px; font-weight:800; }
@keyframes ui-spin { to { transform:rotate(360deg); } }

/* Score stage ----------------------------------------------------------- */
.score-stage { min-height:0; padding-top:10px; padding-bottom:10px; }
.score-viewport {
  position:relative; height:100%; overflow:auto; overscroll-behavior:contain;
  border:1px solid var(--ui-border); border-radius:var(--ui-radius);
  background:var(--score-paper); box-shadow:0 2px 10px rgba(28,45,32,.045);
  scrollbar-color:#b9c5bb transparent; scrollbar-width:thin;
}
.score-viewport::-webkit-scrollbar { width:10px; height:10px; }
.score-viewport::-webkit-scrollbar-thumb { border:3px solid transparent; border-radius:999px; background-clip:padding-box; background:#b9c5bb; }
#score { position:relative; z-index:2; min-height:100%; padding:28px 22px 60px; background:var(--score-paper); }
#score svg { display:block; max-width:none; }
.empty-score-hint {
  position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; color:var(--ui-muted); text-align:center; pointer-events:none;
}
.empty-score-hint .icon { width:54px; height:54px; color:#aeb9b0; }
.empty-score-hint strong { color:#445048; font-size:18px; }
.score-viewport:has(#score > *) .empty-score-hint { display:none; }
.cursor-marker {
  position:absolute; z-index:14; width:2px; min-height:30px; border-radius:2px; background:#27a657; box-shadow:0 0 0 1px rgba(39,166,87,.12); pointer-events:none; opacity:0; transition:opacity .08s linear;
}
.cursor-marker.is-visible { opacity:1; }
.my-part-underlay-layer { pointer-events:none; }
#score .my-part-underlay-layer rect { fill:var(--ui-yellow) !important; stroke:none !important; rx:8px; ry:8px; }
#score .cs-active-note, #score .cs-active-note * { fill:var(--ui-red) !important; stroke:var(--ui-red) !important; }

/* Stabilization R14: OSMD's native cursor is an indexing aid only. The
   application renders exactly one visible cursor through #cursorMarker. */
#score [id^="cursorImg"],
#score [id*="cursorImg"],
#score .osmd-cursor,
#score [class*="osmd-cursor"] {
  opacity: 0 !important;
  fill: transparent !important;
  stroke: transparent !important;
  pointer-events: none !important;
  filter: none !important;
}
.three-measure-badge { display:none; }

/* Bottom transport ------------------------------------------------------ */
.transport-bar {
  z-index:35; display:grid; grid-template-columns:auto minmax(300px, 1fr) auto; align-items:center; gap:22px;
  min-width:0; padding:10px 16px; border:1px solid var(--ui-border); border-radius:var(--ui-radius);
  background:var(--ui-surface); box-shadow:0 -2px 14px rgba(28,45,32,.055); backdrop-filter:blur(14px);
}
.transport-controls { display:flex; align-items:center; gap:10px; }
.transport-icon, .transport-stop { width:42px; height:42px; display:grid; place-items:center; padding:0; border-color:transparent; background:transparent; }
.transport-stop { border-color:var(--ui-border); background:#fff; }
.play-button {
  position:relative; width:54px; height:54px; border:0; border-radius:50%; display:grid; place-items:center; padding:0;
  background:linear-gradient(145deg, #25a056, #087239); color:#fff; box-shadow:0 9px 20px rgba(13,116,58,.24);
}
.play-button:hover { transform:translateY(-1px); box-shadow:0 12px 26px rgba(13,116,58,.3); }
.play-button .icon { width:25px; height:25px; stroke-width:2; fill:currentColor; }
.play-button .pause-icon, .play-button .play-spinner { display:none; }
.play-button.is-playing .play-icon { display:none; }
.play-button.is-playing .pause-icon { display:block; }
.play-button.is-preparing .play-icon, .play-button.is-preparing .pause-icon { display:none; }
.play-button.is-preparing .play-spinner { display:block; width:24px; height:24px; border:3px solid rgba(255,255,255,.36); border-top-color:#fff; border-radius:50%; animation:ui-spin .75s linear infinite; }
.transport-position { min-width:0; display:grid; gap:7px; }
.position-copy { display:flex; align-items:baseline; justify-content:space-between; gap:18px; color:var(--ui-muted); font-size:12px; }
.position-copy strong { color:var(--ui-text); font-size:15px; }
.transport-position input[type="range"] { width:100%; }
.transport-state-actions { display:flex; align-items:center; justify-content:flex-end; gap:8px; min-width:0; }
.compact-state { height:40px; display:inline-flex; align-items:center; gap:7px; padding:0 11px; font-weight:650; white-space:nowrap; }
.compact-state .icon { width:17px; height:17px; }
.master-autoscroll { height:40px; display:flex; align-items:center; gap:8px; padding-left:10px; color:var(--ui-muted); font-size:12px; white-space:nowrap; }
.master-autoscroll input, .large-switch input, .header-switch input { position:absolute; opacity:0; pointer-events:none; }
.master-autoscroll i, .large-switch i, .header-switch i { width:34px; height:20px; border-radius:999px; background:#cfd7d0; position:relative; transition:.18s ease; flex:0 0 auto; }
.master-autoscroll i::after, .large-switch i::after, .header-switch i::after { content:""; position:absolute; top:3px; left:3px; width:14px; height:14px; border-radius:50%; background:#fff; box-shadow:0 1px 4px rgba(0,0,0,.18); transition:.18s ease; }
.master-autoscroll input:checked + i, .large-switch input:checked + i, .header-switch input:checked + i { background:var(--ui-green); }
.master-autoscroll input:checked + i::after, .large-switch input:checked + i::after, .header-switch input:checked + i::after { transform:translateX(14px); }

/* Shared form controls -------------------------------------------------- */
select, input[type="text"], textarea {
  width:100%; border:1px solid var(--ui-border); border-radius:9px; background:#fff; padding:10px 11px;
}
textarea { resize:vertical; }
input[type="range"] { accent-color:var(--ui-green); }
.field { display:grid; gap:7px; }
.field > span { display:flex; justify-content:space-between; gap:12px; color:var(--ui-muted); font-size:12px; font-weight:650; }
.range-field input { width:100%; }
.check-row { display:flex; align-items:center; gap:9px; color:#435047; }
.check-row input { accent-color:var(--ui-green); }
.large-switch { display:flex; align-items:center; justify-content:space-between; gap:20px; padding:12px; border:1px solid var(--ui-border); border-radius:11px; background:#fbfcfb; }
.large-switch span { display:grid; gap:3px; }
.large-switch strong { font-size:13px; }
.large-switch small { color:var(--ui-muted); }
.header-switch { display:flex; align-items:center; }

/* Contextual popovers --------------------------------------------------- */
.popover-layer { position:fixed; inset:0; z-index:70; pointer-events:none; }
.context-popover {
  --popover-left: 50%; --popover-top: 82px;
  position:fixed; left:var(--popover-left); top:var(--popover-top); transform:translate(-50%, -8px) scale(.985);
  width:330px; max-height:min(640px, calc(100dvh - 170px)); overflow:auto; pointer-events:none; opacity:0; visibility:hidden;
  padding:16px; border:1px solid var(--ui-border); border-radius:14px; background:var(--ui-surface-strong); box-shadow:var(--ui-shadow);
  transition:opacity .13s ease, transform .13s ease, visibility .13s;
}
.context-popover.is-open { pointer-events:auto; opacity:1; visibility:visible; transform:translate(-50%, 0) scale(1); }
.context-popover > header, .popover-header { display:flex; align-items:flex-start; justify-content:space-between; gap:18px; margin-bottom:15px; }
.context-popover > header > div, .popover-header > div { display:grid; gap:3px; }
.context-popover > header strong, .popover-header strong { font-size:15px; }
.context-popover > header span, .popover-header span { color:var(--ui-muted); font-size:12px; }
.popover-close { width:32px; height:32px; display:grid; place-items:center; padding:0; border-color:transparent !important; background:transparent !important; box-shadow:none !important; }
.popover-close .icon { width:17px; height:17px; }
.tempo-display { display:flex; align-items:baseline; justify-content:center; gap:8px; padding:2px 0 14px; }
.tempo-display strong { font-size:38px; line-height:1; }
.tempo-display span { color:var(--ui-muted); font-size:12px; }
.range-with-steps { display:grid; grid-template-columns:34px 1fr 34px; align-items:center; gap:9px; }
.step-button { width:34px; height:34px; padding:0; font-size:20px; }
.tempo-presets { display:grid; grid-template-columns:repeat(4, 1fr); gap:7px; margin-top:13px; }
.tempo-presets button { padding:9px 5px; }
.tempo-presets button.is-primary { color:var(--ui-green-dark); border-color:rgba(22,132,69,.34); background:var(--ui-green-soft); }
.popover-section-label { margin:14px 0 8px; color:var(--ui-muted); font-size:12px; font-weight:700; text-transform:uppercase; letter-spacing:.04em; }
.stacked-actions { display:grid; gap:7px; }
.stacked-actions button, .grid-actions button { padding:10px 11px; }
.loop-fields { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin:12px 0; }
.loop-fields label { display:grid; gap:6px; color:var(--ui-muted); font-size:12px; }
.grid-actions { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.metronome-popover { width:360px; }
.metronome-popover .field + .field, .metronome-popover .field + .large-switch, .metronome-popover .large-switch + .field { margin-top:12px; }
.view-popover { width:340px; }
.view-hint { margin:12px 0 0; color:var(--ui-muted); font-size:12px; line-height:1.45; }

/* Mixer ----------------------------------------------------------------- */
.mixer-popover {
  position:fixed; z-index:72; right:26px; top:84px; width:min(720px, calc(100vw - 52px)); max-height:min(650px, calc(100dvh - 180px));
  display:flex; flex-direction:column; overflow:hidden; opacity:0; visibility:hidden; transform:translateY(-8px) scale(.99); pointer-events:none;
  border:1px solid var(--ui-border); border-radius:15px; background:#fff; box-shadow:var(--ui-shadow); transition:.14s ease;
}
.mixer-popover.is-open { opacity:1; visibility:visible; transform:none; pointer-events:auto; }
.mixer-popover .popover-header { padding:16px 18px 12px; margin:0; border-bottom:1px solid var(--ui-border); }
.mixer-header-actions { display:flex !important; grid-template-columns:none !important; flex-direction:row !important; align-items:center; gap:10px !important; }
.mixer-header-actions label { display:flex; align-items:center; gap:8px; color:var(--ui-muted); font-size:12px; }
.mixer-header-actions select { width:190px; padding:8px 9px; }
.quick-mixer { display:grid; gap:0; overflow:auto; padding:2px 18px 8px; }
.quick-mixer-empty { padding:28px 0; color:var(--ui-muted); text-align:center; }
.quick-track {
  min-width:0 !important; display:grid !important; grid-template-columns:minmax(150px, 1fr) 190px minmax(180px, 1.3fr) !important;
  align-items:center; gap:14px; padding:11px 0 !important; border:0 !important; border-bottom:1px solid #edf0ed !important; border-radius:0 !important; background:transparent !important;
}
.quick-track:last-child { border-bottom:0 !important; }
.quick-track.is-selected { background:linear-gradient(90deg, rgba(255,225,105,.21), transparent 72%) !important; }
.quick-track-head { display:grid !important; grid-template-columns:1fr 34px 34px; gap:6px; align-items:center; }
.quick-track-name { min-width:0; border:0 !important; background:transparent !important; box-shadow:none !important; padding:7px 8px !important; text-align:left !important; font-weight:720; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.quick-track.is-selected .quick-track-name::before { content:"★"; color:#e1ab13; margin-right:7px; }
.quick-mini-btn { width:32px !important; height:32px !important; display:grid; place-items:center; padding:0 !important; font-weight:750; }
.quick-instrument-select { width:100%; padding:8px 9px; }
.quick-volume { display:grid; grid-template-columns:1fr 44px; align-items:center; gap:8px; }
.quick-volume span { color:var(--ui-muted); font-size:11px; text-align:right; }
.mixer-popover > footer { display:flex; justify-content:flex-end; gap:8px; padding:10px 18px 14px; border-top:1px solid var(--ui-border); }
.text-button { padding:8px 10px !important; border-color:transparent !important; background:transparent !important; color:var(--ui-green-dark) !important; box-shadow:none !important; }

/* More drawer ----------------------------------------------------------- */
.drawer-backdrop { position:fixed; z-index:74; inset:0; border:0; border-radius:0; background:rgba(26,35,28,.18); backdrop-filter:blur(2px); opacity:0; visibility:hidden; pointer-events:none; transition:.16s ease; }
.drawer-backdrop.is-open { opacity:1; visibility:visible; pointer-events:auto; }
.more-drawer {
  position:fixed; z-index:75; top:12px; right:12px; bottom:12px; width:min(620px, calc(100vw - 24px));
  display:flex; flex-direction:column; overflow:hidden; border:1px solid var(--ui-border); border-radius:16px; background:#fff; box-shadow:var(--ui-shadow);
  transform:translateX(calc(100% + 24px)); transition:transform .18s ease;
}
.more-drawer.is-open { transform:translateX(0); }
.drawer-header { display:flex; align-items:center; justify-content:space-between; gap:16px; padding:17px 18px; border-bottom:1px solid var(--ui-border); }
.drawer-header > div { display:grid; gap:3px; }
.drawer-header strong { font-size:16px; }
.drawer-header span { color:var(--ui-muted); font-size:12px; }
.drawer-header .icon-button { width:34px; height:34px; display:grid; place-items:center; padding:0; }
.drawer-tabs { display:grid; grid-template-columns:repeat(4,1fr); gap:4px; padding:10px 14px; border-bottom:1px solid var(--ui-border); background:#fbfcfb; }
.drawer-tabs button { padding:9px 8px; border-color:transparent; background:transparent; box-shadow:none; }
.drawer-tabs button.is-active { color:var(--ui-green-dark); background:var(--ui-green-soft); border-color:rgba(22,132,69,.18); }
.drawer-scroll { overflow:auto; padding:16px; }
.more-drawer .panel { display:grid; gap:12px; margin:0 0 14px; padding:15px; border:1px solid var(--ui-border); border-radius:13px; background:#fff; }
.more-drawer .panel[hidden] { display:none !important; }
.more-drawer h2 { margin:0; font-size:15px; }
.more-drawer p { margin:0; color:var(--ui-muted); line-height:1.5; }
.jump-row { display:grid; grid-template-columns:repeat(4,1fr); gap:7px; }
.jump-row button, .preset-editor button, .more-drawer .panel > button { padding:10px; }
.preset-editor { display:grid; grid-template-columns:minmax(0,1fr) auto auto; gap:8px; }
.snake-route-panel { display:grid; gap:10px; margin-top:14px; padding:12px; border:1px solid rgba(22,132,69,.20); border-radius:13px; background:linear-gradient(145deg, #fbfdfb, #f5faf6); }
.snake-route-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:10px; }
.snake-route-heading > div { display:grid; gap:3px; }
.snake-route-heading strong { font-size:15px; color:var(--ui-green-dark); }
.snake-route-heading span:not(.snake-route-badge) { color:var(--ui-muted); font-size:11px; line-height:1.35; }
.snake-route-badge { flex:none; padding:4px 7px; border-radius:999px; color:#547060; background:#e5f1e8; font-size:10px; font-weight:750; }
.snake-route-editor-row { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:7px; }
.snake-route-controls { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:7px; }
.snake-route-controls .field { min-width:0; }
.snake-route-controls .field span { font-size:11px; }
.snake-route-actions { display:grid; grid-template-columns:1.35fr 1fr 0.8fr 0.8fr; gap:7px; }
.snake-route-actions button.is-primary, #snakeRouteEditBtn.is-primary { color:#fff; border-color:#168445; background:#168445; }
.snake-route-actions button.is-active, #snakeRouteEditBtn.is-active { color:#fff; border-color:#9a671e; background:#b98528; }
.snake-route-status { padding:8px 9px; border-radius:9px; background:rgba(255,255,255,.75); color:#596b5e !important; font-size:11px; line-height:1.4; }
.snake-route-status.is-editing { color:#7a5819 !important; background:#fff7df; }
.snake-route-segments { display:grid; gap:6px; margin:0; padding:0; list-style:none; max-height:230px; overflow:auto; }
.snake-route-segment { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:8px; align-items:center; padding:8px 9px; border:1px solid #e3ebe4; border-radius:9px; background:#fff; }
.snake-route-segment-copy { display:grid; gap:2px; min-width:0; }
.snake-route-segment-title { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:12px; font-weight:720; }
.snake-route-segment-meta { color:var(--ui-muted); font-size:10px; }
.snake-route-segment button { width:28px; min-width:28px; height:28px; padding:0; }
.snake-route-empty { padding:8px; color:var(--ui-muted); font-size:11px; text-align:center; }
body.snake-route-editing .drawer-backdrop {
  opacity:0 !important;
  visibility:hidden !important;
  pointer-events:none !important;
  backdrop-filter:none !important;
}
.snake-route-guide {
  position:fixed;
  z-index:120;
  top:86px;
  left:50%;
  width:min(760px, calc(100vw - 28px));
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 11px;
  border:1px solid rgba(22,132,69,.25);
  border-radius:13px;
  background:rgba(255,255,255,.97);
  box-shadow:0 10px 28px rgba(31,55,38,.16);
  transform:translateX(-50%);
}
.snake-route-guide[hidden] { display:none !important; }
.snake-route-guide-mark {
  flex:none;
  width:27px;
  height:27px;
  display:grid;
  place-items:center;
  border-radius:9px;
  color:#fff;
  background:#168445;
  font-size:20px;
  font-weight:800;
}
.snake-route-guide-copy { min-width:0; flex:1; display:grid; gap:2px; }
.snake-route-guide-copy strong { color:#245d3b; font-size:12px; }
.snake-route-guide-copy span { color:#526259; font-size:11px; line-height:1.35; white-space:normal; }
.snake-route-guide button { flex:none; padding:8px 10px; font-size:11px; }
.snake-route-guide button.is-primary { color:#fff; border-color:#168445; background:#168445; }
@media (max-width: 600px) {
  .snake-route-actions { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .snake-route-actions #snakeRouteEditBtn { grid-column:1 / -1; }
  .snake-route-guide { top:68px; align-items:flex-start; flex-wrap:wrap; }
  .snake-route-guide-copy { flex-basis:calc(100% - 43px); }
  .snake-route-guide button { flex:1; }
  .snake-route-guide button:first-of-type { margin-left:37px; }
}
.tracks-head { display:grid; grid-template-columns:minmax(110px, 1.4fr) 46px 46px 36px 36px minmax(120px,1fr) 150px; gap:8px; padding:0 8px; color:var(--ui-muted); font-size:11px; }
.track-list { display:grid; gap:7px; }
.track-row { display:grid !important; grid-template-columns:minmax(110px, 1.4fr) 46px 46px 36px 36px minmax(120px,1fr) 150px auto auto !important; gap:8px !important; align-items:center; padding:8px !important; border:1px solid var(--ui-border) !important; border-radius:10px !important; background:#fff !important; }
.track-row.is-selected { border-color:#e4c558 !important; background:rgba(255,227,112,.18) !important; }
.track-row .track-name { min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.track-volume { display:grid; grid-template-columns:1fr 38px; align-items:center; gap:5px; }
.track-instrument-select { min-width:0; padding:7px; }
.track-more { position:relative; }
.track-more summary { list-style:none; cursor:pointer; }
.track-more summary::-webkit-details-marker { display:none; }
.track-more-body { position:absolute; right:0; top:34px; width:210px; z-index:4; padding:10px; border:1px solid var(--ui-border); border-radius:10px; background:#fff; box-shadow:var(--ui-shadow-soft); }
.track-status { display:none; }
.icon-toggle { display:grid; place-items:center; }
.icon-toggle input { position:absolute; opacity:0; }
.icon-toggle__box { width:32px; height:32px; display:grid; place-items:center; border:1px solid var(--ui-border); border-radius:9px; color:var(--ui-muted); }
.icon-toggle input:checked + .icon-toggle__box { color:var(--ui-green-dark); background:var(--ui-green-soft); border-color:rgba(22,132,69,.25); }
.track-mini-btn { width:32px; height:32px; padding:0; }
.track-mini-btn.active { color:#fff; border-color:var(--ui-green); background:var(--ui-green); }
.recordings-list { display:grid; gap:8px; }
.recording-item { display:grid; grid-template-columns:32px 1fr; gap:10px; align-items:center; padding:9px; border:1px solid var(--ui-border); border-radius:10px; }
.recording-item-title { font-weight:650; }
.recording-item-meta { color:var(--ui-muted); font-size:12px; }
.hotkeys { margin:0; display:grid; gap:0; }
.hotkeys > div { display:grid; grid-template-columns:120px 1fr; gap:12px; padding:9px 0; border-bottom:1px solid #edf0ed; }
.hotkeys dt { font-weight:720; }
.hotkeys dd { margin:0; color:var(--ui-muted); }
.danger { color:#a72f29 !important; }

/* Error toast ----------------------------------------------------------- */
.error-toast { position:fixed; z-index:120; right:22px; bottom:96px; width:min(460px, calc(100vw - 44px)); padding:14px; border:1px solid #e8b7b4; border-radius:13px; background:#fff8f7; box-shadow:var(--ui-shadow); opacity:0; visibility:hidden; transform:translateY(8px); transition:.15s ease; }
.error-toast.is-visible, .error-toast[aria-hidden="false"] { opacity:1; visibility:visible; transform:none; }
.error-toast > div { display:flex; justify-content:space-between; gap:12px; }
.error-toast button { border:0; background:transparent; }
.error-toast p { color:#813630; }
.error-toast textarea { margin-top:8px; min-height:130px; }

/* Responsive ------------------------------------------------------------ */
@media (max-width: 1180px) {
  .document-bar { grid-template-columns:minmax(220px,1fr) auto; }
  .open-score-button { display:none; }
  .document-actions { gap:5px; }
  .state-button { padding:0 9px; }
  .transport-state-actions .compact-state:nth-child(1), .transport-state-actions .compact-state:nth-child(3) { display:none; }
}
@media (max-width: 860px) {
  body { overflow:auto; }
  .approved-ui.app-shell { min-height:100dvh; height:auto; grid-template-rows:auto minmax(520px, 1fr) auto; padding:6px; }
  .document-bar { grid-template-columns:1fr auto; padding:9px; border-radius:11px; }
  .document-copy p, .save-state { display:none; }
  .document-actions .state-button span:not(.top-tempo-value), .document-actions .chevron-text { display:none; }
  .document-actions .state-button { width:40px; justify-content:center; padding:0; }
  .score-stage { min-height:520px; }
  .transport-bar { grid-template-columns:1fr; gap:8px; }
  .transport-controls { justify-content:center; }
  .transport-state-actions { justify-content:center; flex-wrap:wrap; }
  .quick-track { grid-template-columns:1fr !important; gap:8px; }
  .mixer-popover { left:8px; right:8px; width:auto; }
  .tracks-head { display:none; }
  .track-row { grid-template-columns:1fr 40px 40px 36px 36px !important; }
  .track-row > :nth-child(n+6) { grid-column:1/-1; }
}
.approved-ui > .document-bar { grid-row:1; }
.approved-ui > .readiness-strip { grid-row:2; }
.approved-ui > .score-stage { grid-row:3; }
.approved-ui > .transport-bar { grid-row:4; }
.error-toast:not(.hidden) { opacity:1; visibility:visible; transform:none; }
.quick-mixer { grid-template-columns:1fr !important; }
.quick-track > * { grid-column:auto !important; grid-row:auto !important; }
.quick-track-head { grid-column:1 !important; grid-row:1 !important; }
.quick-instrument-select { grid-column:2 !important; grid-row:1 !important; }
.quick-volume { grid-column:3 !important; grid-row:1 !important; }
.state-button.is-active, .state-icon-button.is-active, .compact-state.is-active {
  color:var(--ui-green-dark); border-color:rgba(22,132,69,.34); background:var(--ui-green-soft);
}
.mixer-popover { top:92px; }

/* ======================================================================
   VISUAL CONTRACT PASS 1 — approved rehearsal UI
   ====================================================================== */
:root {
  --vc-bg: #f4f6f4;
  --vc-surface: #ffffff;
  --vc-text: #202522;
  --vc-muted: #6f7771;
  --vc-border: #dfe5e0;
  --vc-border-strong: #cad3cc;
  --vc-green: #158446;
  --vc-green-dark: #0c6b37;
  --vc-green-soft: #edf8f1;
  --vc-yellow: rgba(255, 224, 93, .31);
  --vc-red: #e52828;
  --vc-purple: #7053d6;
  --vc-purple-soft: rgba(112,83,214,.08);
  --vc-shadow: 0 14px 38px rgba(29, 43, 33, .13), 0 2px 8px rgba(29,43,33,.05);
  --vc-soft-shadow: 0 4px 16px rgba(29,43,33,.07);
}

.visual-contract-ui.app-shell {
  height: 100dvh;
  display: grid;
  grid-template-rows: 72px minmax(0, 1fr) 92px;
  gap: 12px;
  padding: 10px 14px 12px;
  background: linear-gradient(180deg, #f7f9f7 0%, #f2f4f2 100%);
}

.visual-contract-ui .document-bar {
  grid-row: 1;
  display: grid;
  grid-template-columns: minmax(290px, 1fr) auto minmax(620px, auto);
  align-items: center;
  gap: 24px;
  height: 72px;
  padding: 9px 12px 9px 18px;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 3px 13px rgba(33,45,36,.055);
}

.visual-contract-ui .document-identity {
  min-width: 0;
  display: grid;
  grid-template-columns: 34px minmax(0, auto) auto;
  align-items: center;
  justify-content: start;
  gap: 12px;
}
.visual-contract-ui .document-icon {
  width: 34px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #3a4540;
  background: transparent;
  border-radius: 0;
}
.visual-contract-ui .document-icon .icon { width: 27px; height: 27px; stroke-width: 1.55; }
.visual-contract-ui .document-copy { min-width: 0; display: grid; gap: 3px; }
.visual-contract-ui .document-copy h1 {
  margin: 0;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 17px;
  font-weight: 760;
  line-height: 1.15;
}
.visual-contract-ui .document-copy > p:not(.sr-only) {
  margin: 0;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--vc-muted);
  font-size: 12px;
}
.visual-contract-ui .save-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding-left: 6px;
  color: var(--vc-muted);
  white-space: nowrap;
  font-size: 13px;
}
.visual-contract-ui .save-check {
  width: 22px;
  height: 22px;
  color: var(--vc-green);
  stroke-width: 1.9;
  flex: 0 0 auto;
}
.visual-contract-ui .save-check-error { display: none; }
.visual-contract-ui .save-state.is-error .save-check-ok { display: none; }
.visual-contract-ui .save-state.is-error .save-check-error { display: block; }
.visual-contract-ui .save-state.is-busy .save-check { display: none; }
.visual-contract-ui .save-state.is-busy::before {
  content: "";
  width: 20px;
  height: 20px;
  box-sizing: border-box;
  border: 1.5px solid rgba(21,132,70,.23);
  border-top-color: var(--vc-green);
  border-radius: 50%;
  animation: ui-spin .8s linear infinite;
  flex: 0 0 auto;
}
.visual-contract-ui .save-state.is-error { color: #aa332f; }
.visual-contract-ui .save-state.is-error .save-check-error { color:#c74b45; }

.visual-contract-ui .open-score-button {
  justify-self: start;
  height: 46px;
  padding: 0 17px;
  border-color: var(--vc-border);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(29,43,33,.035);
  font-size: 14px;
  font-weight: 620;
}
.visual-contract-ui .open-score-button .icon { width: 23px; height: 23px; }

.visual-contract-ui .document-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 8px;
}
.visual-contract-ui .state-button,
.visual-contract-ui .state-icon-button {
  height: 46px;
  border-color: var(--vc-border);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(29,43,33,.025);
}
.visual-contract-ui .state-button { padding: 0 14px; gap: 8px; font-size: 14px; font-weight: 580; }
.visual-contract-ui .state-icon-button { width: 46px; }
.visual-contract-ui .state-button .icon,
.visual-contract-ui .state-icon-button .icon { width: 21px; height: 21px; }
.visual-contract-ui .state-button[aria-expanded="true"],
.visual-contract-ui .state-icon-button[aria-expanded="true"],
.visual-contract-ui .state-button.is-active,
.visual-contract-ui .state-icon-button.is-active {
  border-color: rgba(21,132,70,.42);
  background: var(--vc-green-soft);
  color: var(--vc-green-dark);
}
.visual-contract-ui .horizontal-more { font-size: 17px; letter-spacing: 1.5px; font-weight: 900; }

.visual-contract-ui .score-stage {
  grid-row: 2;
  min-height: 0;
  position: relative;
  padding: 0;
}
.visual-contract-ui .score-viewport {
  height: 100%;
  position: relative;
  overflow: auto;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: var(--score-paper);
  box-shadow: 0 3px 12px rgba(29,43,33,.045);
}

/* The engraved page and its scrolling viewport share a warm paper tint;
   controls and transport remain white UI surfaces. */
.score-viewport,
.visual-contract-ui .score-viewport {
  background: var(--score-paper) !important;
}
.visual-contract-ui #score {
  min-height: 100%;
  padding: 38px 20px 56px;
  display: block;
}
.visual-contract-ui #score > svg,
.visual-contract-ui #score > div > svg {
  display: block;
  margin: 0 auto;
}
.visual-contract-ui .empty-score-hint { gap: 9px; }
.visual-contract-ui .empty-score-hint .icon { width: 48px; height: 48px; }
.visual-contract-ui .empty-score-hint strong { font-size: 18px; }
.visual-contract-ui .cursor-marker {
  z-index: 14;
  width: 2px;
  min-height: 44px;
  background: #27a657;
  box-shadow: 0 0 0 1px rgba(39,166,87,.09);
}
.visual-contract-ui #score .my-part-underlay-layer rect {
  fill: var(--vc-yellow) !important;
  stroke: none !important;
  rx: 8px;
  ry: 8px;
}
.visual-contract-ui #score .cs-active-note,
.visual-contract-ui #score .cs-active-note * {
  fill: var(--vc-red) !important;
  stroke: var(--vc-red) !important;
}

.visual-contract-ui .fragment-selection {
  position: absolute;
  z-index: 15;
  border: 2px solid var(--vc-purple);
  border-radius: 10px;
  background: var(--vc-purple-soft);
  pointer-events: none;
}
.visual-contract-ui .fragment-handle {
  position: absolute;
  top: -29px;
  min-width: 30px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 2px solid var(--vc-purple);
  border-radius: 7px;
  background: #fff;
  color: #3e2e7d;
  font-weight: 750;
}
.visual-contract-ui .fragment-handle-start { left: -2px; }
.visual-contract-ui .fragment-handle-end { right: -2px; }
.visual-contract-ui .fragment-toolbar {
  position: sticky;
  z-index: 20;
  left: 50%;
  bottom: 14px;
  width: max-content;
  margin: 0 auto;
  display: flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: rgba(255,255,255,.96);
  box-shadow: var(--vc-shadow);
}
.visual-contract-ui .fragment-toolbar[hidden] { display: none; }
.visual-contract-ui .fragment-toolbar button {
  height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 13px;
  border: 0;
  border-radius: 8px;
  background: transparent;
}
.visual-contract-ui .fragment-toolbar button:first-child { color: var(--vc-purple); background: var(--vc-purple-soft); }

/* Loading surface */
.visual-contract-ui .readiness-strip {
  display: none;
  position: absolute;
  z-index: 80;
  inset: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: rgba(250,251,250,.96);
  backdrop-filter: blur(8px);
}
.visual-contract-ui .readiness-strip.is-busy,
.visual-contract-ui .readiness-strip.is-error { display: flex; }
.visual-contract-ui .loading-card {
  width: min(1060px, calc(100% - 90px));
  min-height: 550px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 38px 46px 28px;
  border: 1px solid var(--vc-border);
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--vc-soft-shadow);
}
.visual-contract-ui .loading-spinner {
  width: 50px;
  height: 50px;
  margin-bottom: 18px;
  border: 4px solid rgba(21,132,70,.16);
  border-top-color: var(--vc-green);
  border-radius: 50%;
  animation: ui-spin .85s linear infinite;
}
.visual-contract-ui .loading-card h2 { margin: 0; font-size: 24px; }
.visual-contract-ui .loading-card > p { margin: 12px 0 28px; color: var(--vc-muted); font-size: 15px; }
.visual-contract-ui .loading-card > strong { color: var(--vc-green); font-size: 25px; }
.visual-contract-ui .loading-card > progress {
  width: min(760px, 80%);
  height: 10px;
  margin: 13px 0 12px;
  border: 0;
  border-radius: 999px;
  overflow: hidden;
  background: #e7ebe8;
}
.visual-contract-ui .loading-card > progress::-webkit-progress-bar { background:#e7ebe8; }
.visual-contract-ui .loading-card > progress::-webkit-progress-value { background: var(--vc-green); }
.visual-contract-ui .loading-card > progress::-moz-progress-bar { background: var(--vc-green); }
.visual-contract-ui .loading-card > #readinessPhase { color: var(--vc-muted); font-size: 14px; }
.visual-contract-ui .readiness-steps {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(7, minmax(90px,1fr));
  gap: 0;
  margin: 36px 0 24px;
  padding: 0;
  list-style: none;
}
.visual-contract-ui .readiness-steps li {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 5px;
  color: #9ba29c;
  text-align: center;
}
.visual-contract-ui .readiness-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 19px;
  left: calc(50% + 25px);
  width: calc(100% - 50px);
  border-top: 1px dashed #d8ddd9;
}
.visual-contract-ui .readiness-steps .lucide {
  position: relative;
  z-index: 1;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid #dfe4e0;
  border-radius: 50%;
  background: #fff;
  font-style: normal;
  font-size: 17px;
}
.visual-contract-ui .readiness-steps b { color:#555d57; font-size:13px; }
.visual-contract-ui .readiness-steps small { font-size:11px; }
.visual-contract-ui .readiness-steps .is-complete i { color:#fff; border-color:var(--vc-green); background:var(--vc-green); }
.visual-contract-ui .readiness-steps .is-active i { color:var(--vc-green); border:2px solid rgba(21,132,70,.35); box-shadow:0 0 0 6px rgba(21,132,70,.08); }
.visual-contract-ui .readiness-steps .is-complete small,
.visual-contract-ui .readiness-steps .is-active small { color:var(--vc-green); }
.visual-contract-ui .loading-tip {
  width: 100%;
  padding: 12px 18px;
  border: 1px solid var(--vc-border);
  border-radius: 9px;
  background: #fafbfa;
  color: var(--vc-muted);
  text-align: center;
  font-size: 13px;
}

/* Transport */
.visual-contract-ui .transport-bar {
  grid-row: 3;
  display: grid;
  grid-template-columns: 330px minmax(360px, 1fr) auto;
  align-items: center;
  gap: 28px;
  min-width: 0;
  height: 92px;
  padding: 10px 22px;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: rgba(255,255,255,.97);
  box-shadow: 0 -2px 12px rgba(29,43,33,.05);
}
.visual-contract-ui .transport-controls { gap: 14px; }
.visual-contract-ui .transport-icon,
.visual-contract-ui .transport-stop {
  width: 46px;
  height: 46px;
  border: 0;
  background: transparent;
  box-shadow: none;
}
.visual-contract-ui .transport-stop {
  border: 1px solid var(--vc-border);
  border-radius: 50%;
  background:#fff;
}
.visual-contract-ui .play-button {
  width: 62px;
  height: 62px;
  background: linear-gradient(145deg, #249c55, #0c713b);
  box-shadow: 0 9px 20px rgba(13,116,58,.24);
}
.visual-contract-ui .transport-position { gap: 8px; }
.visual-contract-ui .position-copy {
  display: flex;
  justify-content: center;
  gap: 10px;
  color: var(--vc-muted);
  font-size: 14px;
}
.visual-contract-ui .position-copy > span:first-child { position:absolute; transform:translateY(-24px); font-size:11px; }
.visual-contract-ui .position-copy strong { font-size: 17px; color:var(--vc-text); }
.visual-contract-ui .transport-position input[type="range"] { width:100%; }
.visual-contract-ui .transport-state-actions { gap: 10px; }
.visual-contract-ui .compact-state {
  height: 46px;
  min-width: 82px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--vc-border);
  border-radius: 9px;
  background: #fff;
  white-space: nowrap;
}
.visual-contract-ui .master-volume {
  min-width: 175px;
  display: grid;
  grid-template-columns: 24px 1fr 40px;
  align-items: center;
  gap: 8px;
}
.visual-contract-ui .master-volume input { width: 100%; }
.visual-contract-ui .master-volume span { color:var(--vc-muted); font-size:12px; }
.visual-contract-ui .master-autoscroll {
  min-width: 150px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  color: var(--vc-muted);
  font-size: 12px;
}

/* Context popovers */
.context-popover {
  position: fixed !important;
  z-index: 100;
  left: var(--popover-left, 50%);
  top: var(--popover-top, 88px);
  width: 330px;
  max-height: calc(100vh - 120px);
  overflow: auto;
  padding: 15px;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--vc-shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, -5px);
  transition: opacity .14s ease, transform .14s ease, visibility .14s ease;
}
.context-popover.is-open { opacity:1; visibility:visible; pointer-events:auto; transform:translate(-50%,0); }
.context-popover > header { display:flex; align-items:center; justify-content:space-between; gap:14px; margin-bottom:14px; }
.context-popover > header > div { display:grid; gap:2px; }
.context-popover > header strong { font-size:15px; }
.context-popover > header span { color:var(--vc-muted); font-size:11px; }
.context-popover .popover-close { width:30px; height:30px; display:grid; place-items:center; padding:0; border:0; background:transparent; }
.context-popover .field { display:grid; gap:7px; margin-bottom:14px; }
.context-popover .field > span,
.context-popover .popover-section-label { color:#4a514d; font-size:12px; font-weight:650; }
.context-popover select { width:100%; height:39px; padding:0 10px; border:1px solid var(--vc-border); border-radius:8px; background:#fff; }
.tempo-popover { width: 330px; }
.tempo-display { display:flex; align-items:baseline; justify-content:center; gap:8px; padding:8px 0 16px; }
.tempo-display strong { font-size:42px; font-weight:500; }
.tempo-display span { color:var(--vc-muted); }
.range-with-steps { display:grid; grid-template-columns:34px 1fr 34px; gap:8px; align-items:center; }
.step-button { width:34px; height:34px; padding:0; }
.tempo-presets { display:grid; grid-template-columns:repeat(4,1fr); gap:7px; margin-top:14px; }
.tempo-presets button { height:36px; }
.tempo-presets .is-primary { color:var(--vc-green-dark); border-color:rgba(21,132,70,.28); background:var(--vc-green-soft); }
.part-popover { width: 330px; }
.stacked-actions { display:grid; gap:7px; }
.stacked-actions button { height:38px; }
.loop-popover { width: 360px; }
.metronome-popover { width: 360px; padding:18px; }
.metronome-pattern-buttons { display:grid; gap:8px; margin:10px 0 18px; }
.metronome-pattern-buttons button { height:46px; display:grid; grid-template-columns:32px 1fr; align-items:center; text-align:left; padding:0 12px; }
.metronome-pattern-buttons button.is-active { color:var(--vc-green-dark); border-color:rgba(21,132,70,.42); background:var(--vc-green-soft); }
.count-in-row { display:grid; grid-template-columns:1fr 104px; gap:10px; align-items:center; margin-top:12px; }
.count-in-row select { height:40px; }
.view-popover { width: 340px; }
.bars-buttons { display:grid; grid-template-columns:repeat(6,1fr); gap:5px; margin:9px 0 16px; }
.bars-buttons button { height:36px; padding:0; }
.bars-buttons button.is-active { color:#fff; border-color:var(--vc-green); background:var(--vc-green); }
.focus-view-button { width:100%; height:40px; margin-top:12px; }

/* Mixer — compact anchored table */
.mixer-popover {
  position: fixed !important;
  z-index: 101;
  left: var(--floating-left, auto) !important;
  right: auto !important;
  top: var(--floating-top, 88px) !important;
  bottom: auto !important;
  width: 500px !important;
  max-height: min(600px, calc(100vh - 120px));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--vc-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  pointer-events: none;
}
.mixer-popover.is-open { opacity:1; visibility:visible; transform:none; pointer-events:auto; }
.mixer-popover::before,
.more-menu::before {
  content:"";
  position:absolute;
  top:-7px;
  right:30px;
  width:12px;
  height:12px;
  border-left:1px solid var(--vc-border);
  border-top:1px solid var(--vc-border);
  background:#fff;
  transform:rotate(45deg);
}
.mixer-popover .quick-mixer {
  display:grid !important;
  grid-template-columns:1fr !important;
  gap:0;
  padding:4px 0 !important;
  overflow:auto;
}
.mixer-popover .quick-track {
  min-width:0 !important;
  display:grid !important;
  grid-template-columns:36px minmax(100px,1fr) 36px 36px minmax(115px,1.1fr) 125px !important;
  align-items:center;
  gap:8px;
  min-height:64px;
  padding:8px 14px !important;
  border:0 !important;
  border-bottom:1px solid #edf0ed !important;
  border-radius:0 !important;
  background:#fff !important;
}
.mixer-popover .quick-track:last-child { border-bottom:0 !important; }
.mixer-popover .quick-track.is-selected { background:rgba(255,224,93,.22) !important; }
.quick-star-btn,
.quick-mini-btn {
  width:34px !important;
  height:34px !important;
  display:grid;
  place-items:center;
  padding:0 !important;
  border:0 !important;
  border-radius:8px !important;
  background:transparent !important;
  color:#798079;
  box-shadow:none !important;
}
.quick-star-btn.active { color:#e0ab13; }
.quick-star-btn.active .icon { fill:currentColor; }
.quick-track-name { min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-weight:650; }
.quick-mini-btn.active { color:var(--vc-green); }
.quick-volume { display:grid !important; grid-template-columns:1fr 34px !important; align-items:center; gap:6px; }
.quick-volume span { color:var(--vc-muted); font-size:10px; text-align:right; }
.quick-instrument-select { width:100%; height:36px; padding:0 6px; border:0; background:transparent; color:#4c554f; }
.mixer-popover > footer { display:flex; justify-content:flex-end; gap:7px; padding:8px 12px; border-top:1px solid var(--vc-border); }

/* Compact more menu + secondary workspace */
.more-menu {
  position: fixed;
  z-index: 102;
  left: var(--floating-left, auto);
  top: var(--floating-top, 88px);
  width: 226px;
  display: grid;
  padding: 8px;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--vc-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  pointer-events: none;
}
.more-menu.is-open { opacity:1; visibility:visible; transform:none; pointer-events:auto; }
.more-menu button {
  min-height: 42px;
  display: grid;
  grid-template-columns: 25px 1fr;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  text-align: left;
}
.more-menu button:hover { background:#f5f8f5; }
.more-menu button:last-child { margin-top:5px; padding-top:5px; border-top:1px solid var(--vc-border); border-radius:0 0 8px 8px; }
.more-menu .code-icon { font-family:monospace; font-weight:700; color:#58615b; }
.drawer-backdrop {
  position:fixed;
  z-index:104;
  inset:0;
  border:0;
  border-radius:0;
  background:rgba(27,35,30,.18);
  backdrop-filter:blur(2px);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
}
.drawer-backdrop.is-open { opacity:1; visibility:visible; pointer-events:auto; }
.workspace-drawer {
  position:fixed;
  z-index:105;
  top:12px;
  right:12px;
  bottom:12px;
  width:min(590px, calc(100vw - 24px));
  display:flex;
  flex-direction:column;
  overflow:hidden;
  border:1px solid var(--vc-border);
  border-radius:16px;
  background:#fff;
  box-shadow:var(--vc-shadow);
  transform:translateX(calc(100% + 30px));
  transition:transform .18s ease;
}
.workspace-drawer.is-open { transform:none; }
.workspace-drawer .drawer-header { display:grid; grid-template-columns:38px 1fr 38px; align-items:center; gap:10px; padding:14px; border-bottom:1px solid var(--vc-border); }
.workspace-drawer .drawer-header > div { display:grid; gap:2px; }
.workspace-drawer .drawer-header span { color:var(--vc-muted); font-size:11px; }
.workspace-drawer .drawer-scroll { overflow:auto; padding:16px; }
.workspace-drawer .panel { display:grid; gap:12px; margin:0 0 14px; padding:15px; border:1px solid var(--vc-border); border-radius:12px; background:#fff; }
.workspace-drawer .panel[hidden] { display:none !important; }
.workspace-drawer h2 { margin:0; font-size:15px; }
.workspace-drawer p { margin:0; color:var(--vc-muted); }

@media (max-width: 1240px) {
  .visual-contract-ui .document-bar { grid-template-columns:minmax(230px,1fr) auto; gap:12px; }
  .visual-contract-ui .open-score-button { display:none; }
  .visual-contract-ui .transport-bar { grid-template-columns:auto minmax(300px,1fr) auto; gap:16px; }
  .visual-contract-ui .transport-state-actions .compact-state:nth-child(1) { display:none; }
  .visual-contract-ui .master-autoscroll span { display:none; }
  .visual-contract-ui .master-autoscroll { min-width:auto; }
}
@media (max-width: 900px) {
  body { overflow:auto; }
  .visual-contract-ui.app-shell { min-height:100dvh; height:auto; grid-template-rows:auto minmax(560px,1fr) auto; padding:6px; gap:6px; }
  .visual-contract-ui .document-bar { height:auto; grid-template-columns:1fr auto; padding:8px; }
  .visual-contract-ui .save-state, .visual-contract-ui .document-actions .state-button span:not(.top-tempo-value) { display:none; }
  .visual-contract-ui .document-actions { gap:4px; }
  .visual-contract-ui .state-button, .visual-contract-ui .state-icon-button { width:40px; height:40px; justify-content:center; padding:0; }
  .visual-contract-ui .transport-bar { height:auto; grid-template-columns:1fr; gap:8px; }
  .visual-contract-ui .transport-controls, .visual-contract-ui .transport-state-actions { justify-content:center; flex-wrap:wrap; }
  .mixer-popover { left:8px !important; width:calc(100vw - 16px) !important; }
  .mixer-popover .quick-track { grid-template-columns:34px 1fr 34px 34px !important; }
  .mixer-popover .quick-volume, .mixer-popover .quick-instrument-select { grid-column:1/-1; }
  .visual-contract-ui .loading-card { width:calc(100% - 24px); min-height:auto; }
  .visual-contract-ui .readiness-steps { grid-template-columns:repeat(4,1fr); row-gap:20px; }
}
/* Pass 1 alignment refinements */
.visual-contract-ui .document-bar {
  grid-template-columns: minmax(300px, max-content) auto minmax(0, 1fr);
}
.visual-contract-ui .document-actions { margin-left: auto; }
.visual-contract-ui .position-copy > span:first-child { display: none; }
.visual-contract-ui #score { padding-top: 22px; }

/* Visual contract pass 1.1 — exact mixer column order and density */
.mixer-popover .quick-track {
  grid-template-columns: 34px minmax(112px, 1fr) 34px 34px minmax(128px, 1.2fr) 118px !important;
  min-height: 56px !important;
  padding: 5px 12px !important;
  gap: 7px !important;
}
.mixer-popover .quick-star-btn { grid-column: 1 !important; grid-row: 1 !important; }
.mixer-popover .quick-track-name { grid-column: 2 !important; grid-row: 1 !important; }
.mixer-popover .quick-eye-btn { grid-column: 3 !important; grid-row: 1 !important; }
.mixer-popover .quick-hear-btn { grid-column: 4 !important; grid-row: 1 !important; }
.mixer-popover .quick-volume { grid-column: 5 !important; grid-row: 1 !important; }
.mixer-popover .quick-instrument-select { grid-column: 6 !important; grid-row: 1 !important; }
.mixer-popover .quick-track-name {
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  font-size: 14px !important;
  text-align: left !important;
}
.mixer-popover .quick-volume input { min-width: 0; width: 100%; }
.mixer-popover .quick-volume span { display: none; }
.mixer-popover .quick-instrument-select {
  min-width: 0;
  padding: 0 22px 0 4px !important;
  font-size: 12px;
  text-overflow: ellipsis;
}
.mixer-popover > footer { min-height: 48px; align-items: center; }

/* Loop selection must sit above score ink but below contextual popovers. */
.visual-contract-ui .fragment-selection { mix-blend-mode: multiply; }
.visual-contract-ui .fragment-toolbar { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); }

/* Exact mock loading state: transport is visually disabled while preparing. */
body.score-is-preparing .visual-contract-ui .transport-bar {
  opacity: .42;
  pointer-events: none;
}
.mixer-popover .quick-track { grid-template-rows: 1fr !important; }
.mixer-popover .quick-track.is-selected .quick-track-name::before { content: none !important; }

/* Visual contract pass 1.2 — loading header and overlay cleanup */
.visual-contract-ui .readiness-strip.is-busy::before,
.visual-contract-ui .readiness-strip.is-error::before { display: none !important; content: none !important; }
.visual-contract-ui .header-readiness-mini {
  display: none;
  width: 220px;
  align-content: center;
  gap: 6px;
}
.visual-contract-ui .header-readiness-mini > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--vc-muted);
  font-size: 12px;
}
.visual-contract-ui .header-readiness-mini strong { color: var(--vc-green); font-size: 12px; }
.visual-contract-ui .header-readiness-mini progress {
  width: 100%;
  height: 5px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: #e5ebe6;
}
.visual-contract-ui .header-readiness-mini progress::-webkit-progress-bar { background:#e5ebe6; }
.visual-contract-ui .header-readiness-mini progress::-webkit-progress-value { background:var(--vc-green); }
.visual-contract-ui .header-readiness-mini progress::-moz-progress-bar { background:var(--vc-green); }
body.score-is-working .visual-contract-ui .header-readiness-mini { display: grid; }
body.score-is-working .visual-contract-ui .document-bar {
  grid-template-columns: minmax(300px, max-content) auto 220px minmax(0, 1fr);
}
.three-measure-mode .visual-contract-ui #score { display: none !important; }
.three-measure-mode .visual-contract-ui .karaoke-score,
.three-measure-building .visual-contract-ui .karaoke-score { display: grid !important; }
.visual-contract-ui .transport-controls { padding-left: 24px; gap: 18px; }

/* ======================================================================
   AUDIO LIFECYCLE + VIEWPORT CONTRACT PASS 4
   ====================================================================== */
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

.visual-contract-ui.app-shell {
  width: 100%;
  max-width: 100vw;
  min-width: 0;
  overflow: hidden;
}

.visual-contract-ui.app-shell > .document-bar,
.visual-contract-ui.app-shell > .score-stage,
.visual-contract-ui.app-shell > .transport-bar {
  width: calc(100vw - 28px);
  max-width: calc(100vw - 28px);
  min-width: 0 !important;
  justify-self: stretch;
}

.visual-contract-ui .document-bar {
  grid-template-columns: minmax(250px, max-content) auto minmax(0, 1fr);
}
.visual-contract-ui .document-actions,
.visual-contract-ui .transport-controls,
.visual-contract-ui .transport-position,
.visual-contract-ui .transport-state-actions {
  min-width: 0;
  max-width: 100%;
}
.visual-contract-ui .document-actions {
  justify-content: flex-end;
}

.visual-contract-ui .transport-bar {
  grid-template-columns: minmax(280px, 330px) minmax(280px, 1fr) minmax(0, max-content);
}
.visual-contract-ui .transport-state-actions {
  overflow: visible;
}

/* Keep the Lucide Play/Pause glyphs in the DOM. JS only changes state. */
.visual-contract-ui .play-button .play-icon {
  display: block !important;
  fill: currentColor;
  stroke: currentColor;
}
.visual-contract-ui .play-button .pause-icon,
.visual-contract-ui .play-button .play-spinner {
  display: none !important;
}
.visual-contract-ui .play-button.is-playing .play-icon {
  display: none !important;
}
.visual-contract-ui .play-button.is-playing .pause-icon {
  display: block !important;
  fill: none;
  stroke: currentColor;
}
.visual-contract-ui .play-button.is-preparing .play-icon,
.visual-contract-ui .play-button.is-preparing .pause-icon,
.visual-contract-ui .play-button.is-counting .play-icon,
.visual-contract-ui .play-button.is-counting .pause-icon {
  display: none !important;
}
.visual-contract-ui .play-button.is-preparing .play-spinner,
.visual-contract-ui .play-button.is-counting .play-spinner {
  display: block !important;
}

@media (max-width: 900px) {
  .visual-contract-ui.app-shell > .document-bar,
  .visual-contract-ui.app-shell > .score-stage,
  .visual-contract-ui.app-shell > .transport-bar {
    width: calc(100vw - 12px);
    max-width: calc(100vw - 12px);
  }
}

/* Stability pass 6: make expensive synchronous OSMD layout work explicit.
   The overlay is painted before osmd.render() starts and prevents the UI from
   looking like a dead page while the browser is busy building SVG. */
.visual-contract-ui.is-score-rendering .score-viewport::after {
  content: "Перебудовую партитуру…";
  position: absolute;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding-top: 52px;
  color: var(--vc-green-dark);
  font-size: 16px;
  font-weight: 760;
  letter-spacing: .01em;
  background: rgba(248, 250, 248, .86);
  backdrop-filter: blur(3px);
  cursor: wait;
  pointer-events: auto;
}

.visual-contract-ui.is-score-rendering .score-viewport::before {
  content: "";
  position: absolute;
  z-index: 81;
  top: calc(50% - 22px);
  left: calc(50% - 18px);
  width: 36px;
  height: 36px;
  border: 3px solid rgba(21, 132, 70, .18);
  border-top-color: var(--vc-green);
  border-radius: 50%;
  animation: ui-spin .75s linear infinite;
  pointer-events: none;
}

/* ======================================================================
   REAL OSMD SCORE OVERLAYS PASS 14
   ====================================================================== */
#score {
  position: relative;
  isolation: isolate;
}

#score > svg {
  position: relative;
  z-index: 1;
}

.selected-part-underlay-layer {
  position: absolute;
  inset: 0;
  /* Keep the marker behind the engraved SVG so black selected stems/heads
     remain genuinely black instead of being tinted by the yellow blend. */
  z-index: 0;
  pointer-events: none;
  overflow: visible;
}

.selected-part-underlay-band {
  position: absolute;
  border-radius: 7px;
  background-color: var(--marker-fill);
  background-image:
    repeating-linear-gradient(
      1deg,
      var(--marker-ink) 0 1px,
      transparent 1px 3px,
      rgba(255, 255, 255, .12) 3px 4px,
      transparent 4px 7px,
      var(--marker-ink-soft) 7px 9px,
      transparent 9px 13px
    ),
    repeating-linear-gradient(
      179deg,
      transparent 0 7px,
      rgba(255, 255, 255, .12) 5px 6px,
      transparent 6px 15px
    ),
    radial-gradient(ellipse 18px .8px at 17% 34%, var(--marker-ink) 0 55%, transparent 72%),
    radial-gradient(ellipse 14px .7px at 61% 72%, rgba(255, 255, 255, .20) 0 55%, transparent 72%);
  background-size: auto, auto, 37px 11px, 43px 13px;
  background-position: 0 0, 4px 0, 3px 1px, 7px 4px;
  background-blend-mode: multiply, screen, multiply, screen;
  box-shadow: inset 0 0 0 1px var(--marker-edge-soft);
  mix-blend-mode: multiply;
  box-sizing: border-box;
  overflow: visible;
  /* A marker is not a perfectly rectangular UI panel: its hand-drawn edge
     remains legible around the complete staff while staying behind the SVG. */
  border: 2px solid var(--marker-edge);
  border-radius: 15px 8px 17px 10px / 8px 15px 9px 13px;
  /* A lightly irregular hand-drawn contour makes the line read as a
     marker stroke instead of a rectangular selection panel. */
  clip-path: polygon(
    .2% 9%, 1.5% 4%, 5% 6%, 9% 2%, 14% 5%, 19% 3%, 25% 5%, 31% 2%,
    38% 4%, 45% 2%, 52% 4%, 59% 2%, 66% 5%, 73% 3%, 80% 5%, 87% 2%,
    94% 5%, 99.5% 2%, 100% 11%, 99.7% 89%, 98.3% 96%, 94% 93%,
    89% 97%, 83% 94%, 76% 96%, 69% 93%, 62% 97%, 55% 94%, 48% 96%,
    41% 93%, 34% 97%, 27% 94%, 20% 96%, 13% 93%, 7% 97%, 2% 93%, .3% 97%
  );
  transform: rotate(-0.08deg);
}

.selected-part-underlay-band::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 8px;
  background-color: rgba(198, 148, 0, .20);
  background-image:
    repeating-linear-gradient(1deg, rgba(255, 255, 255, .13) 0 1px, transparent 1px 4px),
    radial-gradient(ellipse 2px 1px at 23% 42%, rgba(130, 95, 0, .13) 0 55%, transparent 75%);
  background-size: auto, 15px 7px;
  background-blend-mode: screen, multiply;
  border: 0;
  border-radius: 10px 16px 8px 12px / 7px 10px 13px 8px;
  clip-path: polygon(
    0 40%, 7% 12%, 16% 35%, 25% 8%, 35% 29%, 45% 5%, 55% 32%,
    65% 10%, 75% 35%, 85% 7%, 94% 31%, 100% 17%, 100% 100%, 0 100%
  );
  transform: rotate(0.18deg);
  pointer-events: none;
}

.selected-part-underlay-band::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 8px;
  background-color: rgba(198, 148, 0, .20);
  background-image:
    repeating-linear-gradient(179deg, rgba(255, 255, 255, .13) 0 1px, transparent 1px 4px),
    radial-gradient(ellipse 2px 1px at 71% 58%, rgba(130, 95, 0, .13) 0 55%, transparent 75%);
  background-size: auto, 17px 8px;
  background-blend-mode: screen, multiply;
  border-radius: 15px 8px 17px 10px / 8px 15px 9px 13px;
  clip-path: polygon(
    0 58%, 7% 26%, 16% 49%, 25% 14%, 35% 42%, 45% 10%, 55% 46%,
    65% 18%, 75% 50%, 85% 12%, 94% 44%, 100% 24%, 100% 100%, 0 100%
  );
  transform: rotate(-0.12deg);
  pointer-events: none;
}

/* The brush reference is rotated into a horizontal stroke: keep its edge
   ordinary and smooth, while the dry grain supplies the character. */
.selected-part-underlay-band {
  border: 1px solid var(--marker-edge);
  border-radius: 7px;
  clip-path: polygon(
    .2% 9%, 1.5% 4%, 5% 6%, 9% 2%, 14% 5%, 19% 3%, 25% 5%, 31% 2%,
    38% 4%, 45% 2%, 52% 4%, 59% 2%, 66% 5%, 73% 3%, 80% 5%, 87% 2%,
    94% 5%, 99.5% 2%, 100% 11%, 99.7% 89%, 98.3% 96%, 94% 93%,
    89% 97%, 83% 94%, 76% 96%, 69% 93%, 62% 97%, 55% 94%, 48% 96%,
    41% 93%, 34% 97%, 27% 94%, 20% 96%, 13% 93%, 7% 97%, 2% 93%, .3% 97%
  );
}

.selected-part-underlay-band::before,
.selected-part-underlay-band::after {
  content: none;
  display: none;
}

/* Marker preferences. The marker remains behind the engraving, so the
   selected semantic notes stay black and the other divisi notes keep their
   grouped gray treatment. */
:root {
  --marker-fill: rgba(181, 207, 187, .42);
  --marker-ink: rgba(89, 125, 96, .16);
  --marker-ink-soft: rgba(89, 125, 96, .08);
  --marker-edge: rgba(89, 125, 96, .18);
  --marker-edge-soft: rgba(89, 125, 96, .10);
}

:root[data-marker-color="yellow"] {
  --marker-fill: rgba(255, 236, 153, .42);
  --marker-ink: rgba(196, 148, 0, .16);
  --marker-ink-soft: rgba(196, 148, 0, .08);
  --marker-edge: rgba(196, 148, 0, .18);
  --marker-edge-soft: rgba(196, 148, 0, .10);
}

:root[data-marker-color="pink"] {
  --marker-fill: rgba(236, 196, 207, .42);
  --marker-ink: rgba(164, 95, 117, .15);
  --marker-ink-soft: rgba(164, 95, 117, .08);
  --marker-edge: rgba(164, 95, 117, .18);
  --marker-edge-soft: rgba(164, 95, 117, .10);
}

:root[data-marker-color="green"] {
  --marker-fill: rgba(181, 207, 187, .42);
  --marker-ink: rgba(89, 125, 96, .16);
  --marker-ink-soft: rgba(89, 125, 96, .08);
  --marker-edge: rgba(89, 125, 96, .18);
  --marker-edge-soft: rgba(89, 125, 96, .10);
}

:root[data-marker-color="beige"] {
  --marker-fill: rgba(222, 210, 181, .42);
  --marker-ink: rgba(161, 140, 105, .16);
  --marker-ink-soft: rgba(161, 140, 105, .08);
  --marker-edge: rgba(169, 149, 113, .18);
  --marker-edge-soft: rgba(169, 149, 113, .10);
}

:root[data-marker-style="rectangular"] .selected-part-underlay-band {
  border-radius: 7px;
  clip-path: none;
  transform: none;
}

:root[data-marker-style="brush"] .selected-part-underlay-band {
  border-radius: 15px 8px 17px 10px / 8px 15px 9px 13px;
  clip-path: polygon(
    .2% 9%, 1.5% 4%, 5% 6%, 9% 2%, 14% 5%, 19% 3%, 25% 5%, 31% 2%,
    38% 4%, 45% 2%, 52% 4%, 59% 2%, 66% 5%, 73% 3%, 80% 5%, 87% 2%,
    94% 5%, 99.5% 2%, 100% 11%, 99.7% 89%, 98.3% 96%, 94% 93%,
    89% 97%, 83% 94%, 76% 96%, 69% 93%, 62% 97%, 55% 94%, 48% 96%,
    41% 93%, 34% 97%, 27% 94%, 20% 96%, 13% 93%, 7% 97%, 2% 93%, .3% 97%
  );
  transform: rotate(-0.08deg);
}

/* Selected/shared glyphs define the resting rehearsal state, including the
   stem inside the same VexFlow note. */
#score .cs-condensed-part-focus,
#score .cs-condensed-part-focus *,
#score .cs-condensed-part-focus .vf-stem path {
  opacity: 1 !important;
  fill: #111 !important;
  stroke: #111 !important;
  filter: none !important;
}

/* Playback/audition is a temporal overlay. It must win over the resting
   black/gray divisi colors and cover the whole engraved note. */
#score .cs-condensed-part-dim,
#score .cs-condensed-part-dim *,
#score .cs-condensed-part-dim .vf-stem path {
  opacity: 1 !important;
  fill: #68727b !important;
  stroke: #68727b !important;
  filter: none !important;
}

#score .cs-active-note,
#score .cs-active-note *,
#score .cs-active-note .vf-stem path {
  fill: #d92d20 !important;
  stroke: #d92d20 !important;
  filter: drop-shadow(0 0 1.5px rgba(217, 45, 32, .28)) !important;
}

.cursor-marker {
  z-index: 8;
  width: 2px;
  min-width: 2px;
  border: 0;
  border-radius: 0;
  background: #18ad62;
  transform: translateX(-50%);
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .52);
  filter: none;
  transition: opacity 80ms linear;
}

.cursor-marker::before,
.cursor-marker::after {
  content: none !important;
  display: none !important;
}

.cursor-marker.is-visible {
  opacity: 1;
}

/* ======================================================================
   SESSION RESTORE PASS 15 — inspector width guard
   Keep generated track controls inside the fixed inspector column.
   ====================================================================== */
.tracks-head,
.track-row {
  grid-template-columns: minmax(0, 1fr) repeat(4, 34px);
  gap: 7px;
}

.tracks-head > :last-child {
  display: none;
}

.track-row > .track-volume {
  grid-column: 1 / -1;
  width: 100%;
}

.track-row > .track-more {
  grid-column: 1 / -1;
  width: 100%;
  min-width: 0;
}

.track-more-body {
  grid-template-columns: 70px minmax(0, 1fr) 54px;
  min-width: 0;
}

.track-more-body input[type="range"] {
  width: 100%;
  min-width: 0;
}


/* ======================================================================
   VISUAL FIDELITY PASS 10
   Match the approved score-first mock while preserving the existing DOM.
   ====================================================================== */
:root {
  --vc-shell-x: 14px;
  --vc-shell-top: 10px;
  --vc-shell-bottom: 12px;
  --vc-header-h: 72px;
  --vc-transport-h: 92px;
  --vc-gap: 12px;
}

html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

.visual-contract-ui.app-shell {
  width: 100vw;
  height: 100dvh;
  min-width: 0;
  box-sizing: border-box;
  grid-template-rows: var(--vc-header-h) minmax(0, 1fr) var(--vc-transport-h);
  gap: var(--vc-gap);
  padding: var(--vc-shell-top) var(--vc-shell-x) var(--vc-shell-bottom);
  overflow: hidden;
}

.visual-contract-ui.app-shell > .document-bar,
.visual-contract-ui.app-shell > .score-stage,
.visual-contract-ui.app-shell > .transport-bar {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

/* Document bar: identity, file action, compact rehearsal controls. */
.visual-contract-ui .document-bar {
  min-height: var(--vc-header-h);
  grid-template-columns: minmax(260px, 330px) 178px minmax(0, 1fr);
  gap: 22px;
  padding: 9px 12px 9px 18px;
  border-radius: 13px;
}

.visual-contract-ui .document-identity {
  min-width: 0;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 12px;
}

.visual-contract-ui .document-copy {
  min-width: 0;
}

.visual-contract-ui .document-copy h1,
.visual-contract-ui .document-copy > p {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.visual-contract-ui .document-copy h1 {
  font-size: 18px;
  line-height: 1.1;
}

.visual-contract-ui .document-copy > p:not(.sr-only) {
  font-size: 13px;
}

.visual-contract-ui .save-state {
  padding-left: 4px;
  font-size: 13px;
  white-space: nowrap;
}

.visual-contract-ui .open-score-button {
  width: 178px;
  min-width: 178px;
  justify-content: flex-start;
}

.visual-contract-ui .document-actions {
  min-width: 0;
  justify-content: flex-end;
  gap: 7px;
}

.visual-contract-ui #tempoDrawerBtn { min-width: 94px; }
.visual-contract-ui [data-popover-target="partPopover"] { min-width: 100px; }
.visual-contract-ui .loop-summary-button { min-width: 145px; }
.visual-contract-ui #mixerToggleBtn { min-width: 98px; }
.visual-contract-ui [data-popover-target="viewPopover"] { min-width: 104px; }

.visual-contract-ui .state-button,
.visual-contract-ui .state-icon-button {
  min-height: 46px;
  border-radius: 11px;
  box-shadow: 0 2px 8px rgba(29, 43, 33, .035);
}

/* Score remains the dominant surface. */
.visual-contract-ui .score-stage {
  min-height: 0;
  border-radius: 13px;
  overflow: hidden;
}

.visual-contract-ui .score-viewport {
  min-width: 0;
  min-height: 0;
  border-radius: 13px;
}

.visual-contract-ui #score {
  min-width: 0;
  padding: 28px 38px 76px;
}

/* Transport proportions from the approved mock. */
.visual-contract-ui .transport-bar {
  min-height: var(--vc-transport-h);
  grid-template-columns: minmax(292px, 350px) minmax(320px, 1fr) auto;
  gap: 26px;
  padding: 10px 22px;
  border-radius: 13px;
}

.visual-contract-ui .transport-controls {
  padding-left: 22px;
  gap: 16px;
}

.visual-contract-ui .transport-icon,
.visual-contract-ui .transport-stop {
  width: 48px;
  height: 48px;
}

.visual-contract-ui .play-button {
  width: 62px;
  height: 62px;
}

.visual-contract-ui .play-button .icon {
  width: 27px;
  height: 27px;
}

.visual-contract-ui .transport-position {
  align-self: center;
  gap: 11px;
  min-width: 0;
}

.visual-contract-ui .position-copy { font-size: 15px; }
.visual-contract-ui .position-copy strong { font-size: 18px; }
.visual-contract-ui .compact-state { min-width: 88px; }
.visual-contract-ui .master-volume { min-width: 184px; }
.visual-contract-ui .master-autoscroll { min-width: 154px; }

/* Mixer: a compact table, but wide enough for real Bonse labels. */
.visual-contract-ui .mixer-popover {
  width: min(560px, calc(100vw - 28px)) !important;
  max-height: min(520px, calc(100dvh - 104px));
  padding: 0;
  border-radius: 13px;
  overflow: auto;
  overscroll-behavior: contain;
}

.visual-contract-ui .mixer-popover .quick-mixer {
  display: grid;
  grid-template-columns: 1fr !important;
  gap: 0 !important;
  padding: 0 !important;
  overflow: visible;
}

.visual-contract-ui .mixer-popover .quick-track {
  min-width: 0 !important;
  min-height: 68px !important;
  grid-template-columns: 38px minmax(104px, 1fr) 36px 36px minmax(108px, 1fr) minmax(118px, 148px) !important;
  grid-template-rows: 1fr !important;
  align-items: center;
  gap: 7px !important;
  padding: 8px 14px !important;
  border: 0 !important;
  border-bottom: 1px solid var(--vc-border, #e5e9e5) !important;
  border-radius: 0 !important;
  background: #fff;
  box-shadow: none !important;
}

.visual-contract-ui .mixer-popover .quick-track:first-child {
  border-radius: 12px 12px 0 0 !important;
}

.visual-contract-ui .mixer-popover .quick-track:last-child {
  border-bottom: 0 !important;
  border-radius: 0 0 12px 12px !important;
}

.visual-contract-ui .mixer-popover .quick-track.is-selected {
  background: linear-gradient(90deg, rgba(255, 239, 168, .72), rgba(255, 249, 222, .38));
  box-shadow: inset 3px 0 0 rgba(209, 158, 0, .72) !important;
}

.visual-contract-ui .mixer-popover .quick-track-head {
  display: contents !important;
}

.visual-contract-ui .mixer-popover .quick-track-name {
  min-width: 0;
  width: auto !important;
  height: 38px !important;
  padding: 0 5px !important;
  overflow: hidden;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px !important;
}

.visual-contract-ui .mixer-popover .quick-star-btn,
.visual-contract-ui .mixer-popover .quick-mini-btn {
  width: 36px !important;
  min-width: 36px !important;
  height: 38px !important;
  min-height: 38px !important;
  padding: 0 !important;
}

.visual-contract-ui .mixer-popover .quick-volume {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(72px, 1fr) 34px !important;
  align-items: center;
  gap: 6px;
}

.visual-contract-ui .mixer-popover .quick-volume input {
  width: 100%;
  min-width: 0;
}

.visual-contract-ui .mixer-popover .quick-instrument-select {
  width: 100% !important;
  min-width: 0 !important;
  height: 38px !important;
  padding: 0 28px 0 9px !important;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px !important;
}

.visual-contract-ui .mixer-popover > footer {
  display: none !important;
}

/* Metronome: primary controls only, matching the approved hierarchy. */
.visual-contract-ui .metronome-popover {
  width: min(370px, calc(100vw - 28px));
  max-height: calc(100dvh - 104px);
  padding: 20px;
  border-radius: 13px;
  overflow: auto;
}

.visual-contract-ui .metronome-popover > header > div > span {
  display: none;
}

.visual-contract-ui .metronome-pattern-buttons {
  gap: 9px;
  margin: 12px 0 20px;
}

.visual-contract-ui .metronome-pattern-buttons button {
  height: 50px;
}

.visual-contract-ui .metronome-popover .check-row {
  display: none;
}

.visual-contract-ui .metronome-popover .count-in-row {
  grid-template-columns: minmax(0, 1fr) 112px;
  margin-top: 16px;
  padding-top: 15px;
  border-top: 1px solid var(--vc-border, #e5e9e5);
}

/* Overflow menu and loading state. */
.visual-contract-ui .more-menu {
  width: min(232px, calc(100vw - 28px));
  padding: 9px;
}

.visual-contract-ui .more-menu button {
  min-height: 44px;
}

.visual-contract-ui .loading-card {
  width: min(1060px, calc(100vw - 90px));
  min-height: 550px;
  padding: 38px 46px 28px;
  border-radius: 16px;
}

.visual-contract-ui .score-loading-card {
  width: min(430px, calc(100vw - 56px));
  padding: 22px 24px;
  border-radius: 16px;
}

/* Medium desktop: keep controls available without horizontal overflow. */
@media (max-width: 1240px) {
  .visual-contract-ui .document-bar {
    grid-template-columns: minmax(230px, 1fr) auto;
    gap: 12px;
  }

  .visual-contract-ui .open-score-button {
    grid-column: 2;
  }

  .visual-contract-ui .document-actions {
    position: absolute;
    right: 26px;
    top: 94px;
    z-index: 45;
    max-width: calc(100vw - 52px);
    padding: 6px;
    border: 1px solid var(--vc-border, #e5e9e5);
    border-radius: 12px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 8px 26px rgba(18, 30, 22, .11);
  }

  .visual-contract-ui .score-stage {
    padding-top: 56px;
  }

  .visual-contract-ui .transport-bar {
    grid-template-columns: auto minmax(250px, 1fr) auto;
    gap: 14px;
    padding-inline: 14px;
  }

  .visual-contract-ui .master-autoscroll {
    min-width: 128px;
  }
}

@media (max-width: 820px) {
  :root {
    --vc-shell-x: 8px;
    --vc-shell-top: 8px;
    --vc-shell-bottom: 8px;
    --vc-header-h: 66px;
    --vc-transport-h: 82px;
    --vc-gap: 8px;
  }

  .visual-contract-ui .document-bar {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 8px 9px 8px 12px;
  }

  .visual-contract-ui .document-identity {
    grid-template-columns: 28px minmax(0, 1fr);
  }

  .visual-contract-ui .save-state {
    display: none;
  }

  .visual-contract-ui .open-score-button {
    width: 46px;
    min-width: 46px;
    padding-inline: 0;
    justify-content: center;
  }

  .visual-contract-ui .open-score-button span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .visual-contract-ui .document-actions {
    left: 12px;
    right: 12px;
    max-width: none;
    overflow-x: auto;
    justify-content: flex-start;
  }

  .visual-contract-ui #score {
    padding: 20px 20px 70px;
  }

  .visual-contract-ui .transport-bar {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
    padding: 8px 10px;
  }

  .visual-contract-ui .transport-actions,
  .visual-contract-ui .transport-secondary {
    display: none;
  }

  .visual-contract-ui .transport-controls {
    padding-left: 0;
    gap: 8px;
  }

  .visual-contract-ui .transport-icon,
  .visual-contract-ui .transport-stop {
    width: 42px;
    height: 42px;
  }

  .visual-contract-ui .play-button {
    width: 54px;
    height: 54px;
  }

  .visual-contract-ui .mixer-popover .quick-track {
    grid-template-columns: 36px minmax(92px, 1fr) 34px 34px minmax(76px, .8fr) minmax(108px, 1fr) !important;
    padding-inline: 9px !important;
    gap: 5px !important;
  }
}


/* ======================================================================
   INTEGRATED LOOP GEOMETRY PASS 16
   One exact barline-to-barline segment per rendered OSMD system.
   ====================================================================== */
.visual-contract-ui .fragment-selection {
  position: absolute;
  z-index: 15;
  border: 0;
  border-radius: 0;
  background: transparent;
  mix-blend-mode: normal;
  overflow: visible;
  pointer-events: none;
}
.visual-contract-ui .fragment-selection-segment {
  position: absolute;
  box-sizing: border-box;
  border: 2px solid var(--vc-purple);
  border-radius: 10px;
  background: var(--vc-purple-soft);
  box-shadow: inset 0 0 0 1px rgba(112,83,214,.08);
  mix-blend-mode: multiply;
}
.visual-contract-ui .fragment-selection-segment .fragment-handle {
  z-index: 2;
}

/* Stabilization R5: in-app runtime diagnostics */
.diagnostics-panel {
  display: grid;
  gap: 14px;
}

.diagnostic-health {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--line, #d9d4ca);
  border-radius: 14px;
  background: #f7f5ef;
}

.diagnostic-health > svg {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
}

.diagnostic-health > div {
  display: grid;
  gap: 2px;
}

.diagnostic-health strong,
.diagnostic-health span {
  display: block;
}

.diagnostic-health span {
  color: var(--muted, #6f6a61);
  font-size: 13px;
}

.diagnostic-health[data-health="ok"] {
  background: #edf7ef;
  border-color: #b8d8bd;
}

.diagnostic-health[data-health="warning"] {
  background: #fff7df;
  border-color: #e6cf8d;
}

.diagnostic-health[data-health="error"] {
  background: #fff0ee;
  border-color: #e0b0aa;
}

.diagnostic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
}

.diagnostic-grid > div {
  padding: 10px 12px;
  border: 1px solid var(--line, #d9d4ca);
  border-radius: 12px;
  background: #fff;
}

.diagnostic-grid dt {
  margin: 0 0 4px;
  color: var(--muted, #6f6a61);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.diagnostic-grid dd {
  margin: 0;
  font-weight: 700;
}

.diagnostic-issues {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.diagnostic-issues li {
  padding: 10px 12px;
  border-left: 3px solid #a97935;
  border-radius: 8px;
  background: #faf7f0;
  font-size: 13px;
}

.diagnostic-issues li[data-severity="error"] {
  border-left-color: #b84a3f;
  background: #fff3f1;
}

.diagnostic-issues li.is-empty {
  border-left-color: #739a74;
  background: #f1f7f1;
}

.diagnostic-issues code {
  display: block;
  margin-bottom: 3px;
  font-size: 11px;
}

.diagnostic-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

#diagnosticText {
  width: 100%;
  min-height: 180px;
  resize: vertical;
  white-space: pre;
  font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

#errorToastCode:not([hidden]) {
  margin-left: 8px;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(0, 0, 0, .07);
  font-size: 10px;
}

@media (max-width: 720px) {
  .diagnostic-grid { grid-template-columns: 1fr; }
}

/* STABILIZATION R10: readable runtime errors on desktop and narrow screens. */
.error-toast {
  width: min(680px, calc(100vw - 32px));
  max-height: min(72vh, 720px);
  overflow: auto;
}
.error-toast > div,
.error-toast p,
.error-toast details,
.error-toast textarea {
  min-width: 0;
  max-width: 100%;
}
.error-toast p {
  overflow-wrap: anywhere;
}
.error-toast textarea {
  display: block;
  width: 100%;
  min-height: 150px;
  padding: 10px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  resize: vertical;
  font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (max-width: 760px) {
  .error-toast {
    right: 10px;
    bottom: 84px;
    width: calc(100vw - 20px);
  }
}

/* STABILIZATION R10: keep technical details inside the readable error card. */
.error-toast,
.error-toast * {
  box-sizing: border-box;
}
.error-toast details {
  overflow: hidden;
}
.error-toast summary {
  overflow-wrap: anywhere;
}
.error-toast textarea {
  max-width: 100%;
  overflow-x: auto;
}

/* ======================================================================
   STABILIZATION R15 — VIEWPORT FOCUS + INDEPENDENT SCORE SCALE
   ====================================================================== */
.visual-contract-ui .score-viewport {
  overflow: auto;
  overscroll-behavior: contain;
}

.visual-contract-ui #score {
  --cs-score-scale: 1;
  width: 100%;
  min-width: 100%;
  max-width: none;
  margin-inline: 0;
  transform: scale(var(--cs-score-scale));
  transform-origin: top left;
  transition: transform 120ms ease;
}

.visual-contract-ui #score.is-score-scaled-down,
.visual-contract-ui #score.is-score-scaled-up {
  margin-inline: 0;
}

#score.cs-fragment-focus-active {
  display: block !important;
  min-height: 0;
}

#score.cs-fragment-focus-active .cs-fragment-focus-page-root {
  display: block;
  width: 100% !important;
  max-width: none !important;
  height: auto !important;
  min-height: 0 !important;
  margin: 0 0 18px;
  overflow: hidden;
}

#score.cs-fragment-focus-active .cs-fragment-focus-page {
  display: block;
  width: 100% !important;
  height: auto !important;
  max-width: none !important;
  overflow: visible;
}

#score.cs-fragment-focus-active [hidden] {
  display: none !important;
}

/* The old clone-based karaoke surface remains inert for cache/backward
   compatibility. R15 focus always uses the original OSMD SVG pages. */
.visual-contract-ui .karaoke-score,
.three-measure-mode .visual-contract-ui .karaoke-score,
.three-measure-building .visual-contract-ui .karaoke-score {
  display: none !important;
}

.three-measure-mode .visual-contract-ui #score,
.three-measure-building .visual-contract-ui #score {
  display: block !important;
}

.score-scale-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.score-scale-control > span {
  display: grid;
  gap: 2px;
}

.score-scale-control small,
.layout-safety-note {
  color: var(--vc-muted, #66736b);
  font-size: 12px;
  line-height: 1.35;
}

.score-scale-control output {
  min-width: 54px;
  padding: 5px 8px;
  border-radius: 9px;
  background: rgba(20, 118, 67, .08);
  color: var(--vc-green, #147643);
  font-weight: 800;
  text-align: center;
}

.score-scale-range {
  width: 100%;
  accent-color: var(--vc-green, #147643);
}

.score-scale-presets {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
}

.score-scale-presets button {
  min-width: 0;
  padding: 7px 5px;
  border: 1px solid var(--vc-line, #dce3de);
  border-radius: 9px;
  background: #fff;
  color: var(--vc-text, #1d2a22);
  font-size: 12px;
  font-weight: 750;
}

.score-scale-presets button.is-active {
  border-color: rgba(20, 118, 67, .42);
  background: rgba(20, 118, 67, .09);
  color: var(--vc-green, #147643);
}

.layout-safety-note {
  margin: 0;
  padding: 8px 10px;
  border-radius: 9px;
  background: rgba(91, 104, 96, .06);
}

.layout-safety-note.is-clamped {
  background: rgba(189, 136, 0, .10);
  color: #745500;
}

/* ======================================================================
   STABILIZATION R15.2 — ATOMIC GEOMETRY + SINGLE-ACCOLADE VIEW
   ====================================================================== */
.score-view-mode-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 8px 0 10px;
}
.score-view-mode-buttons button {
  min-height: 38px;
  padding: 7px 10px;
  border: 1px solid var(--ui-border, #dfe5df);
  border-radius: 9px;
  background: #fff;
  font-weight: 650;
}
.score-view-mode-buttons button.is-active {
  border-color: rgba(22,132,69,.42);
  background: var(--ui-green-soft, #e9f5ed);
  color: var(--ui-green-dark, #0f6b37);
}
.system-view-note {
  margin: 0 0 14px;
  color: var(--ui-muted, #6d776f);
  font-size: 12px;
  line-height: 1.4;
}
body.is-system-score-view .score-scale-section {
  opacity: .46;
  pointer-events: none;
}
body.is-score-geometry-refreshing .fragment-selection,
body.is-score-geometry-refreshing .selected-part-underlay-layer,
body.is-score-geometry-refreshing .cursor-marker {
  visibility: hidden !important;
}
.visual-contract-ui .score-viewport.is-system-view {
  overflow: hidden !important;
  scroll-behavior: auto !important;
}
.visual-contract-ui .score-viewport.is-system-view #score {
  --cs-score-scale: 1 !important;
  width: 100% !important;
  min-width: 100% !important;
  max-width: 100% !important;
  height: 100% !important;
  min-height: 100% !important;
  margin: 0 !important;
  padding: 8px 12px !important;
  transition: none !important;
  transform: none !important;
  overflow: hidden !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}
#score.cs-system-view-active {
  height: 100% !important;
  min-height: 100% !important;
}
#score.cs-system-view-active [hidden] {
  display: none !important;
}
/* Page titles remain visible in the full score, but they are not part of a
   rehearsal frame or a single-accolade page. */
#score.cs-system-view-active [data-cs-page-heading="1"] {
  display: none !important;
}
#score.cs-system-view-active .cs-system-view-page-root,
#score.cs-system-view-active .cs-system-view-clip-root {
  display: block !important;
  min-width: 0 !important;
  min-height: 0 !important;
  margin: 0 !important;
  overflow: hidden !important;
  contain: paint;
}
#score.cs-system-view-active .cs-system-view-page {
  display: block !important;
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  overflow: clip !important;
  clip-path: inset(0);
  contain: strict;
}
body.is-system-score-view .master-autoscroll {
  opacity: .5;
}
.visual-contract-ui #score {
  transition: none !important;
}
body.is-score-geometry-refreshing.is-system-score-view:not(.is-fragment-focus-view) .visual-contract-ui #score {
  opacity: 0;
}

/* ======================================================================
   STABILIZATION R15.3 — REHEARSAL WORKSPACE
   ====================================================================== */
.score-part-visibility-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
  margin: 7px 0 14px;
}
.score-part-visibility-empty {
  grid-column: 1 / -1;
  color: var(--ui-muted, #6d776f);
  font-size: 12px;
}
.score-part-visibility-item {
  min-width: 0;
  display: grid;
  grid-template-columns: auto 22px minmax(0, 1fr);
  align-items: center;
  gap: 7px;
  padding: 7px 8px;
  border: 1px solid var(--ui-border, #dfe5df);
  border-radius: 9px;
  background: #fff;
  cursor: pointer;
}
.score-part-visibility-item input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--ui-green, #168445);
}
.score-part-visibility-icon,
.score-part-visibility-icon .icon {
  width: 18px;
  height: 18px;
  color: var(--ui-green-dark, #0f6b37);
}
.score-part-visibility-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 680;
}

.timeline-rail {
  position: relative;
  min-width: 0;
  --timeline-special-height: 0px;
  padding-top: calc(var(--timeline-special-height) + 18px);
  padding-bottom: 20px;
}
.timeline-rail > input[type="range"] {
  position: relative;
  z-index: 2;
  display: block;
  margin: 0;
}
.timeline-markers {
  position: absolute;
  z-index: 3;
  inset: 0 7px 0 7px;
  pointer-events: none;
}
.timeline-measure-marker {
  position: absolute;
  top: calc(var(--timeline-special-height) + 18px);
  width: 26px;
  height: 30px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ui-muted, #6d776f);
  font: 650 10px/1 system-ui, sans-serif;
  transform: translateX(-50%);
  pointer-events: auto;
  box-shadow: none !important;
  overflow: visible;
}
.timeline-measure-marker i {
  position: absolute;
  left: 50%;
  top: -4px;
  width: 1px;
  height: 8px;
  background: #96a198;
}
.timeline-measure-marker span {
  position: absolute;
  left: 50%;
  top: 8px;
  transform: translateX(calc(-50% + var(--timeline-label-shift, 0px)));
  white-space: nowrap;
}
.timeline-measure-marker.is-repeat,
.timeline-measure-marker.is-ending {
  top: var(--timeline-marker-top, 0px);
  width: auto;
  min-width: 78px;
  height: 25px;
  color: #174f31;
  font-size: 12px;
  font-weight: 760;
}
.timeline-measure-marker.is-repeat i,
.timeline-measure-marker.is-ending i {
  top: 22px;
  width: 2px;
  height: var(--timeline-stem-height, 18px);
  background: #4c8d67;
}
.timeline-measure-marker.is-repeat span,
.timeline-measure-marker.is-ending span {
  top: 0;
  padding: 5px 9px;
  border: 1px solid rgba(22, 132, 69, 0.28);
  border-radius: 999px;
  background: rgba(245, 251, 247, 0.98);
  box-shadow: 0 1px 4px rgba(15, 73, 40, 0.12);
}
.timeline-measure-marker.is-ending span {
  background: #fff8d9;
  border-color: rgba(165, 126, 20, 0.35);
  color: #6c5310;
}
.timeline-measure-marker.is-crowded span {
  padding-inline: 6px;
  font-size: 11px;
}
.timeline-measure-marker.is-active span {
  color: #fff;
  background: var(--ui-green, #168445);
  border-color: var(--ui-green, #168445);
}
.timeline-measure-marker:hover,
.timeline-measure-marker:focus-visible {
  color: var(--ui-green-dark, #0f6b37);
}
.timeline-measure-marker:hover i,
.timeline-measure-marker:focus-visible i {
  background: var(--ui-green, #168445);
}

body.has-playback-annotations .visual-contract-ui {
  --vc-transport-h: calc(98px + var(--timeline-annotation-extra, 28px));
}

body.is-score-size-adjusting .fragment-selection,
body.is-score-size-adjusting .selected-part-underlay-layer,
body.is-score-size-adjusting .cursor-marker {
  visibility: hidden !important;
}

body.is-fragment-focus-view .visual-contract-ui .score-viewport.is-system-view #score {
  align-items: flex-start !important;
  justify-content: flex-start !important;
  padding-left: 12px !important;
  padding-right: 12px !important;
}
#score.cs-focus-view-active .cs-focus-view-page-root {
  margin-inline: 0 auto !important;
  transform-origin: left center;
}
#score.cs-focus-view-active .cs-focus-view-page {
  object-position: left center;
}

.visual-contract-ui .score-viewport.is-system-view {
  touch-action: pan-y;
  cursor: grab;
}
.visual-contract-ui .score-viewport.is-system-view:active {
  cursor: grabbing;
}
#score.cs-system-page-dragging .cs-system-view-page-root {
  transform: translateX(var(--cs-system-page-drag-x, 0));
  transition: none !important;
  will-change: transform;
}
#score.cs-system-view-active:not(.cs-system-page-dragging) .cs-system-view-page-root {
  transition: transform 140ms ease-out;
}

/* R15.4: fragment focus is a static width-fit rehearsal surface, not a
   horizontally paged one-accolade view. */
body.is-fragment-focus-view .visual-contract-ui .score-viewport.is-system-view {
  overflow-x: hidden !important;
  overflow-y: auto !important;
  cursor: default;
  touch-action: pan-y;
}
body.is-fragment-focus-view .visual-contract-ui .score-viewport.is-system-view #score {
  height: auto !important;
  min-height: 100% !important;
  display: block !important;
  align-items: initial !important;
  justify-content: initial !important;
  overflow: visible !important;
  padding: 8px 12px 28px !important;
}
#score.cs-focus-view-active .cs-focus-view-page-root,
#score.cs-focus-view-active .cs-system-view-clip-root {
  max-height: none !important;
}

.transport-state-actions {
  gap: 12px;
}
.transport-state-actions .master-volume {
  min-width: 210px;
}

@media (max-width: 1180px) {
  .visual-contract-ui .document-actions #mySettingsBtn span { display: none; }
  .visual-contract-ui .document-actions #mySettingsBtn { width: 42px; padding: 0; justify-content: center; }
  .score-part-visibility-list { grid-template-columns: 1fr; }
}

/* ======================================================================
   STABILIZATION R15.5 — MOBILE-FIRST LIVE PROFILE
   ====================================================================== */
.selected-part-hidden-notice {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  margin: 6px 0 10px;
  padding: 10px 11px;
  border: 1px solid rgba(194, 137, 0, .28);
  border-radius: 10px;
  background: rgba(255, 232, 139, .22);
}
.selected-part-hidden-notice[hidden] { display: none !important; }
.selected-part-hidden-notice span { min-width: 0; display: grid; gap: 2px; }
.selected-part-hidden-notice strong { font-size: 12px; }
.selected-part-hidden-notice small { color: var(--ui-muted, #6d776f); line-height: 1.35; }
.selected-part-hidden-notice button {
  min-height: 34px;
  padding: 6px 10px;
  border-color: rgba(22,132,69,.26);
  background: #fff;
  color: var(--ui-green-dark, #0f6b37);
  font-weight: 750;
}
body.is-selected-part-hidden .selected-part-underlay-layer { display: none !important; }

@media (max-width: 900px) {
  :root {
    --vc-shell-x: 6px;
    --vc-shell-top: 6px;
    --vc-shell-bottom: max(6px, env(safe-area-inset-bottom));
    --vc-header-h: auto;
    --vc-transport-h: auto;
    --vc-gap: 6px;
  }

  html, body {
    width: 100%;
    height: 100%;
    overflow: hidden !important;
    overscroll-behavior: none;
  }

  body.is-mobile-score-player .visual-contract-ui.app-shell {
    width: 100%;
    height: 100dvh;
    min-height: 0;
    grid-template-rows: auto minmax(0, 1fr) auto;
    gap: 6px;
    padding: var(--vc-shell-top) var(--vc-shell-x) var(--vc-shell-bottom);
    overflow: hidden;
  }

  body.is-mobile-score-player .visual-contract-ui .document-bar {
    position: relative;
    min-height: 0;
    height: auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 42px;
    grid-template-areas:
      "identity open"
      "actions actions";
    grid-template-rows: 44px 46px;
    gap: 5px 7px;
    padding: 5px 6px;
    border-radius: 10px;
  }

  body.is-mobile-score-player .visual-contract-ui .document-identity {
    grid-area: identity;
    min-width: 0;
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr) auto;
    gap: 7px;
  }
  body.is-mobile-score-player .visual-contract-ui .document-icon { width: 26px; height: 26px; }
  body.is-mobile-score-player .visual-contract-ui .document-copy h1 { font-size: 14px; }
  body.is-mobile-score-player .visual-contract-ui .document-copy > p:not(.sr-only) {
    display: block;
    font-size: 10px;
  }
  body.is-mobile-score-player .visual-contract-ui .save-state {
    display: flex;
    max-width: 74px;
    padding: 0;
    overflow: hidden;
    font-size: 10px;
    text-overflow: ellipsis;
  }

  body.is-mobile-score-player .visual-contract-ui .open-score-button {
    grid-area: open;
    width: 42px;
    min-width: 42px;
    height: 40px;
    padding: 0;
    justify-content: center;
  }
  body.is-mobile-score-player .visual-contract-ui .open-score-button span { display: none !important; }

  body.is-mobile-score-player .visual-contract-ui .header-readiness-mini {
    position: absolute;
    z-index: 2;
    left: 38px;
    right: 54px;
    bottom: 51px;
    max-width: none;
    padding: 2px 5px;
    background: rgba(255,255,255,.94);
  }

  body.is-mobile-score-player .visual-contract-ui .document-actions {
    position: static !important;
    grid-area: actions;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    height: 46px;
    display: flex;
    justify-content: flex-start;
    gap: 5px;
    padding: 2px 0;
    overflow-x: auto;
    overflow-y: hidden;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    scrollbar-width: none;
    scroll-snap-type: x proximity;
  }
  body.is-mobile-score-player .visual-contract-ui .document-actions::-webkit-scrollbar { display: none; }
  body.is-mobile-score-player .visual-contract-ui .document-actions > button {
    flex: 0 0 auto;
    scroll-snap-align: start;
  }
  body.is-mobile-score-player .visual-contract-ui .state-button,
  body.is-mobile-score-player .visual-contract-ui .state-icon-button {
    width: auto;
    min-width: 42px !important;
    height: 42px;
    min-height: 42px;
    padding: 0 9px;
    border-radius: 10px;
  }
  body.is-mobile-score-player .visual-contract-ui .state-button span {
    display: inline !important;
    max-width: 88px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 11px;
  }
  body.is-mobile-score-player .visual-contract-ui #mySettingsBtn span,
  body.is-mobile-score-player .visual-contract-ui #mixerToggleBtn span,
  body.is-mobile-score-player .visual-contract-ui [data-popover-target="viewPopover"] span {
    display: none !important;
  }

  body.is-mobile-score-player .visual-contract-ui .score-stage {
    min-height: 0 !important;
    padding-top: 0 !important;
    border-radius: 10px;
  }
  body.is-mobile-score-player .visual-contract-ui .score-viewport {
    min-width: 0;
    min-height: 0;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    border-radius: 10px;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
  }
  body.is-mobile-score-player .visual-contract-ui #score {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    min-height: 100%;
    padding: 8px 6px 46px !important;
    margin: 0 !important;
    box-sizing: border-box;
    transform-origin: top left;
  }
  body.is-mobile-score-player .visual-contract-ui #score > svg,
  body.is-mobile-score-player .visual-contract-ui #score [id^="osmdSvgPage"] {
    max-width: 100%;
  }

  body.is-mobile-score-player .visual-contract-ui .score-viewport.is-system-view #score {
    width: 100% !important;
    height: 100% !important;
    min-height: 100% !important;
    padding: 4px !important;
  }
  body.is-mobile-score-player #score.cs-system-view-active .cs-system-view-page-root,
  body.is-mobile-score-player #score.cs-system-view-active .cs-system-view-clip-root {
    width: 100% !important;
    height: 100% !important;
    max-width: 100% !important;
    max-height: 100% !important;
  }
  body.is-mobile-score-player #score.cs-system-view-active .cs-system-view-page {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    max-height: 100% !important;
  }

  body.is-mobile-score-player .visual-contract-ui .fragment-toolbar {
    max-width: calc(100% - 12px);
    gap: 3px;
    padding: 4px;
    bottom: 8px;
  }
  body.is-mobile-score-player .visual-contract-ui .fragment-toolbar button {
    min-height: 36px;
    padding: 6px 8px;
    font-size: 11px;
  }
  body.is-mobile-score-player .visual-contract-ui .three-measure-badge { font-size: 10px; }

  body.is-mobile-score-player .visual-contract-ui .transport-bar {
    min-height: 0;
    height: auto;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "controls volume"
      "position position";
    gap: 4px 8px;
    padding: 5px 7px 6px;
    border-radius: 10px;
  }
  body.is-mobile-score-player .visual-contract-ui .transport-controls {
    grid-area: controls;
    padding: 0;
    gap: 4px;
    justify-content: flex-start;
  }
  body.is-mobile-score-player .visual-contract-ui .transport-icon,
  body.is-mobile-score-player .visual-contract-ui .transport-stop {
    width: 36px;
    height: 36px;
  }
  body.is-mobile-score-player .visual-contract-ui .play-button {
    width: 46px;
    height: 46px;
  }
  body.is-mobile-score-player .visual-contract-ui .play-button .icon { width: 21px; height: 21px; }
  body.is-mobile-score-player .visual-contract-ui .transport-position {
    grid-area: position;
    gap: 2px;
  }
  body.is-mobile-score-player .visual-contract-ui .position-copy {
    display: flex;
    justify-content: center;
    font-size: 11px;
  }
  body.is-mobile-score-player .visual-contract-ui .position-copy > span:first-child { display: none; }
  body.is-mobile-score-player .visual-contract-ui .position-copy strong { font-size: 13px; }
  body.is-mobile-score-player .visual-contract-ui .timeline-rail { padding-top: calc(var(--timeline-special-height) + 15px); padding-bottom: 16px; }
  body.is-mobile-score-player .visual-contract-ui .timeline-markers { inset: 0 5px; }
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker { height: 14px; font-size: 8px; }
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker span { top: 5px; }
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker.is-repeat,
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker.is-ending {
    min-width: 58px;
    height: 34px;
    font-size: 10px;
  }
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker.is-repeat,
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker.is-ending { top: var(--timeline-marker-top, 0px); }
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker.is-repeat span,
  body.is-mobile-score-player .visual-contract-ui .timeline-measure-marker.is-ending span { top: 0; padding: 4px 6px; }
  body.is-mobile-score-player .visual-contract-ui .transport-state-actions {
    grid-area: volume;
    min-width: 0;
    justify-content: flex-end;
  }
  body.is-mobile-score-player .visual-contract-ui .transport-state-actions .master-volume {
    min-width: 0;
    width: min(150px, 38vw);
    display: grid;
    grid-template-columns: 18px minmax(58px, 1fr) 32px;
    gap: 4px;
    font-size: 9px;
  }
  body.is-mobile-score-player .visual-contract-ui .master-autoscroll { display: none; }

  /* Context controls are real mobile bottom sheets, not tiny floating cards. */
  body.is-mobile-score-player .popover-layer { z-index: 90; }
  body.is-mobile-score-player .context-popover,
  body.is-mobile-score-player .metronome-popover,
  body.is-mobile-score-player .view-popover {
    --popover-left: 0px !important;
    --popover-top: auto !important;
    position: fixed !important;
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    bottom: 0 !important;
    width: 100% !important;
    max-width: none !important;
    max-height: min(78dvh, 680px) !important;
    overflow: auto !important;
    padding: 16px max(14px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left)) !important;
    border-radius: 18px 18px 0 0 !important;
    transform: translateY(18px) !important;
    box-shadow: 0 -12px 36px rgba(20, 31, 23, .18) !important;
  }
  body.is-mobile-score-player .context-popover.is-open {
    transform: translateY(0) !important;
  }
  body.is-mobile-score-player .view-popover { padding-bottom: max(24px, env(safe-area-inset-bottom)) !important; }
  body.is-mobile-score-player .score-part-visibility-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  body.is-mobile-score-player .score-part-visibility-item { min-height: 40px; }
  body.is-mobile-score-player .score-scale-presets { grid-template-columns: repeat(4, 1fr); }

  body.is-mobile-score-player .mixer-popover {
    position: fixed !important;
    z-index: 92 !important;
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    bottom: 0 !important;
    width: 100% !important;
    max-height: 78dvh !important;
    border-radius: 18px 18px 0 0 !important;
    transform: translateY(18px) !important;
    overflow: auto !important;
  }
  body.is-mobile-score-player .mixer-popover.is-open { transform: translateY(0) !important; }
  body.is-mobile-score-player .visual-contract-ui .mixer-popover .quick-track,
  body.is-mobile-score-player .mixer-popover .quick-track {
    grid-template-columns: 34px minmax(80px, 1fr) 34px 34px !important;
    grid-template-rows: 40px auto auto !important;
    gap: 5px !important;
    padding: 8px 10px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-volume,
  body.is-mobile-score-player .mixer-popover .quick-instrument-select {
    grid-column: 1 / -1 !important;
    width: 100% !important;
  }

  body.is-mobile-score-player .more-menu {
    position: fixed;
    z-index: 94;
    left: 8px !important;
    right: 8px !important;
    top: auto !important;
    bottom: max(8px, env(safe-area-inset-bottom));
    width: auto !important;
    max-height: 70dvh;
    overflow: auto;
    border-radius: 16px;
  }
  body.is-mobile-score-player .workspace-drawer,
  body.is-mobile-score-player .more-drawer {
    top: auto !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: min(82dvh, 760px) !important;
    border-radius: 18px 18px 0 0 !important;
    transform: translateY(105%) !important;
  }
  body.is-mobile-score-player .workspace-drawer.is-open,
  body.is-mobile-score-player .more-drawer.is-open { transform: translateY(0) !important; }
  body.is-mobile-score-player .drawer-tabs { grid-template-columns: repeat(4, minmax(72px, 1fr)); overflow-x: auto; }
  body.is-mobile-score-player .drawer-scroll { padding: 10px; }
  body.is-mobile-score-player .preset-editor { grid-template-columns: 1fr; }
  body.is-mobile-score-player .track-row { grid-template-columns: minmax(0, 1fr) 40px 40px 36px 36px !important; }

  body.is-mobile-score-player .visual-contract-ui .readiness-strip {
    align-items: flex-end;
    padding: 8px;
  }
  body.is-mobile-score-player .visual-contract-ui .loading-card {
    width: 100%;
    min-height: 0;
    max-height: min(72dvh, 620px);
    overflow: auto;
    padding: 20px 14px 16px;
    border-radius: 16px;
  }
  body.is-mobile-score-player .visual-contract-ui .loading-card h2 { font-size: 18px; }
  body.is-mobile-score-player .visual-contract-ui .loading-card > p { margin: 7px 0 14px; font-size: 12px; }
  body.is-mobile-score-player .visual-contract-ui .loading-card > strong { font-size: 22px; }
  body.is-mobile-score-player .visual-contract-ui .loading-card > progress { width: 100%; }
  body.is-mobile-score-player .readiness-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 7px 3px;
    margin-top: 14px;
  }
  body.is-mobile-score-player .readiness-steps li:nth-child(n+5) { display: none; }
  body.is-mobile-score-player .loading-tip { display: none; }

  body.is-mobile-score-player .error-toast {
    left: 8px;
    right: 8px;
    bottom: max(124px, calc(124px + env(safe-area-inset-bottom)));
    width: auto;
    max-height: 42dvh;
    padding: 11px;
    border-radius: 12px;
    overflow: auto;
  }
  body.is-mobile-score-player .error-toast textarea { min-height: 90px; font-size: 10px; }

  body.is-mobile-score-player .empty-score-hint { padding: 18px; text-align: center; }
}

@media (max-width: 900px) and (orientation: landscape) {
  body.is-mobile-score-player .visual-contract-ui .document-bar {
    grid-template-columns: minmax(170px, 1fr) 42px minmax(0, 2fr);
    grid-template-areas: "identity open actions";
    grid-template-rows: 44px;
  }
  body.is-mobile-score-player .visual-contract-ui .document-actions { height: 44px; }
  body.is-mobile-score-player .visual-contract-ui .document-copy > p:not(.sr-only),
  body.is-mobile-score-player .visual-contract-ui .save-state { display: none; }
  body.is-mobile-score-player .visual-contract-ui .header-readiness-mini { display: none !important; }
  body.is-mobile-score-player .visual-contract-ui .transport-bar {
    grid-template-columns: auto minmax(0, 1fr) minmax(120px, 180px);
    grid-template-areas: "controls position volume";
    align-items: center;
  }
  body.is-mobile-score-player .visual-contract-ui .timeline-rail { padding-top: calc(var(--timeline-special-height) + 14px); padding-bottom: 14px; }
  body.is-mobile-score-player .error-toast {
    bottom: max(66px, calc(66px + env(safe-area-inset-bottom)));
    max-height: 58dvh;
  }
}

/* ======================================================================
   STABILIZATION R15.6 — COMPACT MOBILE TYPOGRAPHY + REAL NOTE SIZE
   ====================================================================== */
body.is-system-score-view .score-scale-section {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 760px) {
  body.is-mobile-score-player .visual-contract-ui .document-bar {
    grid-template-rows: 39px 40px;
    gap: 4px 6px;
    padding: 4px 5px;
  }
  body.is-mobile-score-player .visual-contract-ui .document-identity {
    grid-template-columns: 23px minmax(0, 1fr) auto;
    gap: 6px;
  }
  body.is-mobile-score-player .visual-contract-ui .document-icon {
    width: 23px;
    height: 23px;
  }
  body.is-mobile-score-player .visual-contract-ui .document-copy h1 {
    font-size: 12.5px !important;
    line-height: 1.12;
  }
  body.is-mobile-score-player .visual-contract-ui .document-copy > p:not(.sr-only) {
    font-size: 9px;
    line-height: 1.15;
  }
  body.is-mobile-score-player .visual-contract-ui .save-state {
    max-width: 67px;
    font-size: 9px;
    line-height: 1;
  }
  body.is-mobile-score-player .visual-contract-ui .open-score-button {
    width: 38px;
    min-width: 38px;
    height: 36px;
  }
  body.is-mobile-score-player .visual-contract-ui .document-actions {
    height: 40px;
    gap: 4px;
    padding: 1px 0;
  }
  body.is-mobile-score-player .visual-contract-ui .state-button,
  body.is-mobile-score-player .visual-contract-ui .state-icon-button {
    min-width: 38px !important;
    height: 38px;
    min-height: 38px;
    padding: 0 8px;
    border-radius: 9px;
    font-size: 10px;
  }
  body.is-mobile-score-player .visual-contract-ui .state-button span {
    max-width: 80px;
    font-size: 10px;
  }
  body.is-mobile-score-player .visual-contract-ui .state-button .icon,
  body.is-mobile-score-player .visual-contract-ui .state-icon-button .icon,
  body.is-mobile-score-player .visual-contract-ui .open-score-button .icon {
    width: 18px;
    height: 18px;
  }

  body.is-mobile-score-player .visual-contract-ui #score {
    transform-origin: top center;
  }

  body.is-mobile-score-player .context-popover,
  body.is-mobile-score-player .mixer-popover,
  body.is-mobile-score-player .more-menu,
  body.is-mobile-score-player .workspace-drawer,
  body.is-mobile-score-player .more-drawer {
    font-size: 13px;
  }
  body.is-mobile-score-player .context-popover,
  body.is-mobile-score-player .view-popover {
    padding-top: 12px !important;
  }
  body.is-mobile-score-player .context-popover header strong,
  body.is-mobile-score-player .workspace-drawer > header strong,
  body.is-mobile-score-player .more-drawer > header strong {
    font-size: 17px;
    line-height: 1.15;
  }
  body.is-mobile-score-player .context-popover header span,
  body.is-mobile-score-player .workspace-drawer > header span,
  body.is-mobile-score-player .more-drawer > header span,
  body.is-mobile-score-player .system-view-note,
  body.is-mobile-score-player .score-scale-control small,
  body.is-mobile-score-player .layout-safety-note {
    font-size: 10.5px;
    line-height: 1.32;
  }
  body.is-mobile-score-player .popover-section-label,
  body.is-mobile-score-player .workspace-drawer .panel > h2,
  body.is-mobile-score-player .more-drawer .panel > h2 {
    font-size: 12px;
    line-height: 1.2;
  }
  body.is-mobile-score-player .workspace-drawer .panel > h2,
  body.is-mobile-score-player .more-drawer .panel > h2 {
    font-size: 16px;
  }
  body.is-mobile-score-player .context-popover button,
  body.is-mobile-score-player .context-popover select,
  body.is-mobile-score-player .context-popover input,
  body.is-mobile-score-player .mixer-popover button,
  body.is-mobile-score-player .mixer-popover select,
  body.is-mobile-score-player .workspace-drawer button,
  body.is-mobile-score-player .workspace-drawer select,
  body.is-mobile-score-player .workspace-drawer input,
  body.is-mobile-score-player .workspace-drawer textarea,
  body.is-mobile-score-player .more-drawer button,
  body.is-mobile-score-player .more-drawer select,
  body.is-mobile-score-player .more-drawer input,
  body.is-mobile-score-player .more-drawer textarea {
    font-size: 13px;
  }
  body.is-mobile-score-player .more-menu button {
    min-height: 44px;
    font-size: 14px;
  }
  body.is-mobile-score-player .score-view-mode-buttons button {
    min-height: 36px;
    padding: 6px 8px;
    font-size: 12px;
  }
  body.is-mobile-score-player .score-part-visibility-item {
    min-height: 36px;
    padding: 6px 7px;
  }
  body.is-mobile-score-player .score-part-visibility-name {
    font-size: 11px;
  }
  body.is-mobile-score-player .score-scale-control {
    gap: 10px;
  }
  body.is-mobile-score-player .score-scale-control strong {
    font-size: 13px;
  }
  body.is-mobile-score-player .score-scale-control output {
    min-width: 48px;
    padding: 4px 7px;
    font-size: 13px;
  }
  body.is-mobile-score-player .score-scale-presets button,
  body.is-mobile-score-player .bars-buttons button {
    font-size: 11px;
  }
  body.is-mobile-score-player .quick-track-name,
  body.is-mobile-score-player .track-name {
    font-size: 12px;
  }
  body.is-mobile-score-player .track-sub,
  body.is-mobile-score-player .track-status {
    font-size: 9px;
  }
  body.is-mobile-score-player .quick-track {
    font-size: 11px;
  }
  body.is-mobile-score-player .diagnostic-actions button {
    font-size: 11px;
  }
  body.is-mobile-score-player #diagnosticText {
    font-size: 9.5px;
    line-height: 1.35;
  }
}

/* ======================================================================
   STABILIZATION R15.7 — VERIFIED SCORE SCALE + COMPACT CONTROLS
   ====================================================================== */

/* Note size changes the layout box of each finished OSMD page.  It does
   not transform the whole score container, so overlays and scroll geometry
   remain in the same coordinate system as the visible SVG. */
.visual-contract-ui #score {
  transform: none !important;
  transition: none !important;
}
.visual-contract-ui #score .cs-full-score-scaled-page {
  width: 100% !important;
  min-width: 0 !important;
  max-width: none !important;
  height: auto !important;
  min-height: 0 !important;
  margin: 0 auto 18px 0 !important;
  overflow: visible !important;
}
.visual-contract-ui #score svg.cs-full-score-scaled-page {
  display: block !important;
  height: auto !important;
}
.visual-contract-ui #score .cs-full-score-scaled-page > svg {
  display: block !important;
  width: 100% !important;
  max-width: none !important;
  height: auto !important;
}
.visual-contract-ui #score.is-osmd-layout-surface {
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Consistent range controls.  Native browser thumbs were much larger than
   the controls around them on Samsung/Chrome and Firefox. */
.visual-contract-ui input[type="range"] {
  min-width: 0;
  height: 20px;
  margin: 0;
  padding: 0;
  background: transparent;
  accent-color: var(--vc-green, #168445);
  -webkit-appearance: none;
  appearance: none;
  touch-action: pan-y;
}
.visual-contract-ui input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(var(--vc-green, #168445), var(--vc-green, #168445)) 0/var(--range-fill, 0%) 100% no-repeat, #d4dad5;
}
.visual-contract-ui input[type="range"]::-webkit-slider-thumb {
  width: 16px;
  height: 16px;
  margin-top: -6px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #6f7180;
  box-shadow: 0 1px 4px rgba(25, 34, 28, .28);
  -webkit-appearance: none;
  appearance: none;
}
.visual-contract-ui input[type="range"]::-moz-range-track {
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: #d4dad5;
}
.visual-contract-ui input[type="range"]::-moz-range-progress {
  height: 4px;
  border-radius: 999px;
  background: var(--vc-green, #168445);
}
.visual-contract-ui input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #6f7180;
  box-shadow: 0 1px 4px rgba(25, 34, 28, .28);
}

@media (max-width: 900px) {
  /* The file picker is a permanent document action, never an item hidden in
     the horizontally scrollable score controls. */
  body.is-mobile-score-player .visual-contract-ui .open-score-button {
    display: inline-flex !important;
    grid-area: open;
    width: 68px !important;
    min-width: 68px !important;
    height: 36px !important;
    gap: 4px !important;
    padding: 0 7px !important;
    align-self: center;
    justify-self: end;
  }


  body.is-mobile-score-player .visual-contract-ui .open-score-button .open-score-label-full {
    display: none !important;
  }
  body.is-mobile-score-player .visual-contract-ui .open-score-button .open-score-label-mobile {
    display: inline !important;
    position: static !important;
    width: auto !important;
    height: auto !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: nowrap !important;
    font-size: 9.5px !important;
    line-height: 1 !important;
  }
  body.is-mobile-score-player .visual-contract-ui .document-bar {
    grid-template-columns: minmax(0, 1fr) 68px !important;
  }
  body.is-mobile-score-player .visual-contract-ui .score-viewport.is-system-view #score {
    align-items: flex-start !important;
    justify-content: center !important;
    padding-top: 16px !important;
  }

  body.is-mobile-score-player .visual-contract-ui input[type="range"] {
    height: 18px;
  }
  body.is-mobile-score-player .visual-contract-ui input[type="range"]::-webkit-slider-runnable-track {
    height: 3px;
  }
  body.is-mobile-score-player .visual-contract-ui input[type="range"]::-webkit-slider-thumb {
    width: 12px;
    height: 12px;
    margin-top: -4.5px;
  }
  body.is-mobile-score-player .visual-contract-ui input[type="range"]::-moz-range-track,
  body.is-mobile-score-player .visual-contract-ui input[type="range"]::-moz-range-progress {
    height: 3px;
  }
  body.is-mobile-score-player .visual-contract-ui input[type="range"]::-moz-range-thumb {
    width: 12px;
    height: 12px;
  }

  /* A mobile mixer card has three explicit rows.  Labels and buttons never
     share the volume slider's grid cell. */
  body.is-mobile-score-player .visual-contract-ui .mixer-popover .quick-track,
  body.is-mobile-score-player .mixer-popover .quick-track {
    display: grid !important;
    grid-template-columns: 30px minmax(0, 1fr) 34px 34px !important;
    grid-template-rows: 34px 28px 36px !important;
    gap: 6px !important;
    align-items: center !important;
    padding: 8px 10px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-star-btn {
    grid-column: 1;
    grid-row: 1;
    width: 30px !important;
    min-width: 30px !important;
    height: 30px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-track-name {
    grid-column: 2;
    grid-row: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 11px !important;
    font-weight: 700;
  }
  body.is-mobile-score-player .mixer-popover .quick-eye-btn {
    grid-column: 3;
    grid-row: 1;
  }
  body.is-mobile-score-player .mixer-popover .quick-hear-btn {
    grid-column: 4;
    grid-row: 1;
  }
  body.is-mobile-score-player .mixer-popover .quick-eye-btn,
  body.is-mobile-score-player .mixer-popover .quick-hear-btn {
    width: 32px !important;
    min-width: 32px !important;
    height: 32px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-volume {
    grid-column: 1 / -1 !important;
    grid-row: 2 !important;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) 36px !important;
    align-items: center !important;
    gap: 7px !important;
    width: 100% !important;
    min-width: 0 !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-volume span {
    font-size: 10px;
    text-align: right;
  }
  body.is-mobile-score-player .mixer-popover .quick-instrument-select {
    grid-column: 1 / -1 !important;
    grid-row: 3 !important;
    width: 100% !important;
    min-width: 0 !important;
    height: 34px !important;
    font-size: 11px !important;
  }
}

/* R15.7 visual gate: leave room for the loop boundary badges in static
   fragment focus. They must remain visible instead of being clipped by the
   score viewport's top edge. */
body.is-fragment-focus-view.is-mobile-score-player .visual-contract-ui .score-viewport.is-system-view #score {
  padding-top: 28px !important;
}
body.is-fragment-focus-view.is-mobile-score-player .visual-contract-ui .fragment-selection-segment .fragment-handle {
  top: 3px;
}

/* Mobile sheets must become visibly open. Earlier desktop popover declarations
   could keep opacity/visibility at their closed values even after the mobile
   transform changed. Keep the final state explicit and opaque. */
@media (max-width: 900px) {
  body.is-mobile-score-player .context-popover.is-open,
  body.is-mobile-score-player .metronome-popover.is-open,
  body.is-mobile-score-player .view-popover.is-open,
  body.is-mobile-score-player .mixer-popover.is-open {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: translateY(0) !important;
    background: #fff !important;
  }
}


/* ======================================================================
   STABILIZATION R15.8 — ENGRAVING SCALE, NOT PAGE SCALE
   ====================================================================== */
.visual-contract-ui #score .cs-full-score-scaled-page,
.visual-contract-ui #score .cs-full-score-scaled-page > svg,
.visual-contract-ui #score svg.cs-full-score-scaled-page {
  width: 100% !important;
  max-width: 100% !important;
  transform: none !important;
  transform-origin: initial !important;
}
.visual-contract-ui #score .cs-full-score-scaled-page {
  margin-inline: 0 !important;
}


/* ======================================================================
   STABILIZATION R15.9 — deterministic focus, mobile icon bar and score lock
   ====================================================================== */
.visual-contract-ui .transport-lock {
  display: none;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--vc-line, #dce3de);
  border-radius: 50%;
  background: #fff;
  color: var(--vc-text, #1d2a22);
}
.visual-contract-ui .transport-lock .lock-closed-icon { display: none; }
.visual-contract-ui .transport-lock.is-active {
  border-color: rgba(20, 118, 67, .42);
  background: rgba(20, 118, 67, .10);
  color: var(--vc-green, #147643);
}
.visual-contract-ui .transport-lock.is-active .lock-open-icon { display: none; }
.visual-contract-ui .transport-lock.is-active .lock-closed-icon { display: block; }

body.is-score-interaction-locked .visual-contract-ui .score-viewport {
  overflow: hidden !important;
  touch-action: none !important;
  overscroll-behavior: none !important;
}
body.is-score-interaction-locked .visual-contract-ui #score,
body.is-score-interaction-locked .visual-contract-ui #karaokeScore,
body.is-score-interaction-locked .visual-contract-ui .fragment-toolbar,
body.is-score-interaction-locked .visual-contract-ui .fragment-selection {
  pointer-events: none !important;
  user-select: none !important;
  -webkit-user-select: none !important;
}
body.is-score-interaction-locked .visual-contract-ui .score-viewport::after {
  content: "";
  position: sticky;
  z-index: 30;
  display: block;
  width: 22px;
  height: 22px;
  left: calc(100% - 30px);
  bottom: 8px;
  margin-top: -30px;
  border-radius: 50%;
  background: rgba(255,255,255,.88) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23147643' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect width='14' height='11' x='5' y='11' rx='2' ry='2'/%3E%3Cpath d='M8 11V7a4 4 0 0 1 8 0v4'/%3E%3C/svg%3E") center/14px 14px no-repeat;
  box-shadow: 0 2px 8px rgba(20,31,23,.16);
  pointer-events: none;
}

body.is-score-scale-over-100.is-system-score-view:not(.is-score-interaction-locked) .visual-contract-ui .score-viewport {
  overflow-x: auto !important;
  overflow-y: auto !important;
  touch-action: pan-x pan-y !important;
}

@media (max-width: 900px) {
  body.is-mobile-score-player .visual-contract-ui .document-actions {
    gap: 6px !important;
  }
  body.is-mobile-score-player .visual-contract-ui .document-actions .state-button,
  body.is-mobile-score-player .visual-contract-ui .document-actions .state-icon-button {
    position: relative;
    flex: 0 0 42px;
    width: 42px !important;
    min-width: 42px !important;
    padding: 0 !important;
    justify-content: center !important;
  }
  body.is-mobile-score-player .visual-contract-ui .document-actions .state-button > span,
  body.is-mobile-score-player .visual-contract-ui .document-actions .state-button .chevron-text {
    display: none !important;
  }
  body.is-mobile-score-player .visual-contract-ui .document-actions .state-button[data-mobile-badge]:not([data-mobile-badge=""])::after {
    content: attr(data-mobile-badge);
    position: absolute;
    right: 2px;
    bottom: 2px;
    min-width: 15px;
    height: 15px;
    padding: 0 3px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: #fff;
    border: 1px solid rgba(20,118,67,.30);
    color: var(--vc-green, #147643);
    font-size: 8px;
    line-height: 1;
    font-weight: 800;
    box-shadow: 0 1px 3px rgba(20,31,23,.10);
  }
  body.is-mobile-score-player .visual-contract-ui .open-score-button {
    width: 44px !important;
    min-width: 44px !important;
    height: 42px !important;
    padding: 0 !important;
    justify-content: center !important;
  }
  body.is-mobile-score-player .visual-contract-ui .open-score-label-full,
  body.is-mobile-score-player .visual-contract-ui .open-score-label-mobile {
    display: none !important;
  }
  body.is-mobile-score-player .visual-contract-ui .transport-lock {
    display: grid;
    width: 36px;
    height: 36px;
  }
  body.is-mobile-score-player .visual-contract-ui .score-scale-presets {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 5px;
  }
  body.is-mobile-score-player .visual-contract-ui .score-scale-presets button {
    font-size: 10px;
    padding-inline: 2px;
  }
}

/* ==========================================================================
   STABILIZATION R15.10 — explicit score-view model
   View, reading size and horizontal layout are deliberately separate.
   ========================================================================== */
.view-popover {
  width: min(440px, calc(100vw - 24px));
}

.view-mode-settings[hidden] {
  display: none !important;
}

.score-view-mode-buttons {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.score-view-mode-buttons button {
  min-width: 0;
  min-height: 62px;
  height: auto;
  padding: 9px 7px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 3px;
  text-align: left;
}

.score-view-mode-buttons button strong {
  font-size: 12px;
  line-height: 1.15;
}

.score-view-mode-buttons button small {
  font-size: 9.5px;
  line-height: 1.2;
  color: var(--muted, #657067);
}

.score-view-mode-buttons button.is-active small {
  color: inherit;
  opacity: .78;
}

.score-view-mode-buttons button:disabled {
  opacity: .48;
  cursor: not-allowed;
}

.view-mode-settings {
  margin-top: 12px;
  padding-top: 2px;
}

.reading-size-presets {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.reading-size-presets button,
.system-size-presets button {
  min-width: 0;
  height: auto;
  min-height: 46px;
  padding: 7px 5px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2px;
}

.reading-size-presets button strong,
.system-size-presets button strong {
  font-size: 10.5px;
  line-height: 1.15;
}

.reading-size-presets button small,
.system-size-presets button small {
  font-size: 9px;
  line-height: 1.1;
  opacity: .72;
}

.system-size-presets {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.system-size-presets button {
  border: 1px solid #d4ddd5;
  border-radius: 9px;
  background: #fff;
  color: #27312a;
}

.system-size-presets button.is-active {
  border-color: #1f6d45;
  background: #e7f2eb;
  color: #174f34;
  box-shadow: inset 0 0 0 1px rgba(31,109,69,.14);
}

.system-scale-status {
  margin: 8px 0 0;
  padding: 8px 10px;
  border-radius: 8px;
  background: #f3f6f3;
  color: #526058;
  font-size: 11px;
  line-height: 1.35;
}

.system-scale-status.is-zoomed {
  background: #fff6df;
  color: #72541b;
}

.advanced-layout-section {
  margin-top: 12px;
  border-top: 1px solid #e2e8e3;
  padding-top: 10px;
}

.advanced-layout-section summary {
  cursor: pointer;
  color: #435149;
  font-size: 11px;
  font-weight: 700;
  list-style-position: outside;
  margin-left: 16px;
}

.advanced-layout-section[open] summary {
  margin-bottom: 10px;
}

.focus-fit-message {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 10px;
  padding: 11px;
  border-radius: 10px;
  background: #edf6f0;
  color: #244f36;
}

.focus-fit-message .icon {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 1px;
}

.focus-fit-message span {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.focus-fit-message strong {
  font-size: 12px;
}

.focus-fit-message small {
  font-size: 10px;
  line-height: 1.35;
  color: #4d6857;
}

body.is-fragment-focus-view .advanced-layout-section,
body.is-current-system-view .advanced-layout-section {
  display: none !important;
}

@media (max-width: 760px) {
  body.is-mobile-score-player .view-popover {
    width: 100% !important;
  }

  body.is-mobile-score-player .score-view-mode-buttons {
    grid-template-columns: 1fr;
  }

  body.is-mobile-score-player .score-view-mode-buttons button {
    min-height: 46px;
    padding: 7px 10px;
    display: grid;
    grid-template-columns: minmax(0, auto) 1fr;
    column-gap: 8px;
    align-items: center;
  }

  body.is-mobile-score-player .score-view-mode-buttons button strong {
    font-size: 11px;
  }

  body.is-mobile-score-player .score-view-mode-buttons button small {
    font-size: 9.5px;
  }

  body.is-mobile-score-player .reading-size-presets {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  body.is-mobile-score-player .reading-size-presets button {
    min-height: 40px;
  }

  body.is-mobile-score-player .system-size-presets button {
    min-height: 42px;
  }
}

/* R15.10 visual refinement after screenshot review: use readable rows rather
   than compressing mode names and helper text into narrow tiles. */
.score-view-mode-buttons {
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 6px;
}

.score-view-mode-buttons button,
body.is-mobile-score-player .score-view-mode-buttons button {
  width: 100%;
  min-height: 44px;
  padding: 7px 10px;
  display: grid !important;
  grid-template-columns: minmax(110px, 132px) minmax(0, 1fr) !important;
  column-gap: 10px;
  align-items: center;
  text-align: left;
}

.score-view-mode-buttons button strong,
.score-view-mode-buttons button small,
.reading-size-presets button strong,
.reading-size-presets button small,
.system-size-presets button strong,
.system-size-presets button small {
  display: block;
}

.score-view-mode-buttons button small {
  overflow-wrap: anywhere;
}

.reading-size-presets {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 760px) {
  body.is-mobile-score-player .score-view-mode-buttons button {
    grid-template-columns: minmax(105px, 118px) minmax(0, 1fr) !important;
  }

  body.is-mobile-score-player .reading-size-presets,
  body.is-mobile-score-player .system-size-presets {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ======================================================================
   STABILIZATION R15.11 — REST CURSOR, WIDTH-FIT CURRENT ROW, MOBILE HIDE
   ====================================================================== */

/* Current-row note size is now an OSMD engraving choice. The prepared
   accolade is always fitted to the available width; it is never a horizontally
   pannable enlarged SVG. */
.visual-contract-ui .score-viewport.is-system-view,
body.is-score-scale-over-100.is-system-score-view:not(.is-score-interaction-locked) .visual-contract-ui .score-viewport {
  overflow-x: hidden !important;
  overflow-y: hidden !important;
  touch-action: manipulation !important;
  cursor: default !important;
}

#score.cs-system-page-dragging .cs-system-view-page-root,
#score.cs-system-view-active .cs-system-view-page-root,
#score.cs-system-view-active .cs-system-view-clip-root {
  transform: none !important;
  transition: none !important;
  max-width: 100% !important;
}

#score.cs-system-view-active .cs-system-view-page {
  object-position: center center !important;
}

/* Keep the last truthful playhead visible while the next accolade geometry is
   committed atomically. It is replaced immediately after the new frame is
   ready instead of blinking out in long rests. */
body.is-score-geometry-refreshing.is-system-score-view .cursor-marker[data-pending-geometry="1"] {
  visibility: visible !important;
  opacity: .72;
}

@media (max-width: 900px) {
  body.is-mobile-score-player .visual-contract-ui .score-viewport.is-system-view {
    overflow-x: hidden !important;
    overflow-y: hidden !important;
    touch-action: manipulation !important;
  }

  /* A current row is one centred accolade, not a draggable strip. */
  body.is-mobile-score-player .visual-contract-ui .score-viewport.is-system-view #score {
    align-items: center !important;
    justify-content: center !important;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }
}

/* The mobile interaction lock remains authoritative after the current-row
   width-fit rules above. */
body.is-score-interaction-locked .visual-contract-ui .score-viewport.is-system-view,
body.is-score-interaction-locked.is-mobile-score-player .visual-contract-ui .score-viewport.is-system-view {
  overflow: hidden !important;
  touch-action: none !important;
  overscroll-behavior: none !important;
}

/* ======================================================================
   STABILIZATION R15.12 — MOBILE STAGE, MIXER, SESSION LOG
   ====================================================================== */

.mobile-mixer-header {
  display: none;
}

.listening-mode-summary {
  margin: 9px 0 0;
  padding: 9px 10px;
  border-radius: 9px;
  background: #f3f6f3;
  color: #435149;
  font-size: 10.5px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.mixer-visibility-icon {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.quick-eye-btn::before,
.quick-track.is-hidden-part .quick-eye-btn::before {
  content: none !important;
  display: none !important;
}

@media (max-width: 900px) {
  html,
  body,
  body.is-mobile-score-player,
  body.is-mobile-score-player .approved-ui.app-shell {
    width: 100%;
    max-width: 100vw;
    min-width: 0;
    overflow: hidden !important;
  }

  body.is-mobile-score-player .approved-ui.app-shell {
    transition: padding .16s ease, grid-template-rows .16s ease;
  }

  /* The score is the mobile application surface. Header and transport are
     overlays that can disappear completely, not permanent reserved rows. */
  body.is-mobile-score-player.is-mobile-chrome-hidden .approved-ui.app-shell {
    grid-template-rows: 0 minmax(0, 1fr) 0 !important;
    padding: 0 !important;
  }

  body.is-mobile-score-player.is-mobile-chrome-hidden .document-bar,
  body.is-mobile-score-player.is-mobile-chrome-hidden .transport-bar {
    min-height: 0 !important;
    height: 0 !important;
    max-height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    border-width: 0 !important;
    border-radius: 0 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    overflow: hidden !important;
    transform: translateY(-8px);
  }

  body.is-mobile-score-player.is-mobile-chrome-hidden .transport-bar {
    transform: translateY(8px);
  }

  body.is-mobile-score-player.is-mobile-chrome-hidden .score-stage,
  body.is-mobile-score-player.is-mobile-chrome-hidden .score-viewport {
    width: 100% !important;
    height: 100% !important;
    min-height: 0 !important;
    border-radius: 0 !important;
    border-left-width: 0 !important;
    border-right-width: 0 !important;
  }

  body.is-mobile-score-player.is-mobile-chrome-hidden #score {
    padding-bottom: 8px !important;
  }

  /* Do not clip the final action button by a few pixels on narrow devices. */
  body.is-mobile-score-player .document-bar {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    overflow: hidden !important;
    padding-inline: 8px !important;
  }

  body.is-mobile-score-player .document-actions {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scrollbar-width: none;
    scroll-padding-right: 12px;
    padding-right: 12px !important;
    overscroll-behavior-inline: contain;
  }

  body.is-mobile-score-player .document-actions::-webkit-scrollbar {
    display: none;
  }

  body.is-mobile-score-player .document-actions > :last-child {
    margin-right: 2px;
  }

  /* A bottom-sheet mixer with its own scroll area. It never changes the page
     width or height and every row stays inside the viewport. */
  body.is-mobile-score-player .mixer-popover {
    display: grid !important;
    grid-template-rows: auto minmax(0, 1fr) auto !important;
    box-sizing: border-box !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    top: auto !important;
    width: 100vw !important;
    max-width: 100vw !important;
    min-width: 0 !important;
    height: min(86dvh, 760px) !important;
    max-height: min(86dvh, 760px) !important;
    padding: 0 !important;
    overflow: hidden !important;
    border-radius: 18px 18px 0 0 !important;
    contain: layout paint;
  }

  body.is-mobile-score-player .mobile-mixer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-width: 0;
    padding: 12px 14px 10px;
    border-bottom: 1px solid var(--ui-border, #dfe5df);
    background: #fff;
  }

  body.is-mobile-score-player .mobile-mixer-header > div {
    min-width: 0;
    display: grid;
    gap: 2px;
  }

  body.is-mobile-score-player .mobile-mixer-header strong {
    font-size: 15px;
  }

  body.is-mobile-score-player .mobile-mixer-header span {
    color: var(--ui-muted, #6d776f);
    font-size: 10px;
  }

  body.is-mobile-score-player .mobile-mixer-header button {
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    padding: 0;
  }

  body.is-mobile-score-player .mixer-popover .quick-mixer {
    min-width: 0 !important;
    min-height: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    display: block !important;
    padding: 6px 8px 10px !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  body.is-mobile-score-player .mixer-popover .quick-track {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    display: grid !important;
    grid-template-columns: 32px minmax(0, 1fr) 36px 36px !important;
    grid-template-rows: 38px 32px 36px !important;
    gap: 5px 7px !important;
    align-items: center !important;
    padding: 8px !important;
    margin: 0 0 6px !important;
    border: 1px solid var(--ui-border, #dfe5df) !important;
    border-radius: 12px !important;
    background: #fff !important;
    overflow: hidden !important;
    box-sizing: border-box !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-track.is-selected {
    border-left: 4px solid #e6bd29 !important;
    padding-left: 5px !important;
    background: #fff9e7 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-track > * {
    min-width: 0 !important;
    max-width: 100%;
  }

  body.is-mobile-score-player .mixer-popover .quick-star-btn {
    grid-column: 1 !important;
    grid-row: 1 !important;
    width: 32px !important;
    height: 32px !important;
    padding: 0 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-track-name {
    grid-column: 2 !important;
    grid-row: 1 !important;
    display: block !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    font-size: 13px !important;
    font-weight: 700 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-eye-btn {
    grid-column: 3 !important;
    grid-row: 1 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-hear-btn {
    grid-column: 4 !important;
    grid-row: 1 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-eye-btn,
  body.is-mobile-score-player .mixer-popover .quick-hear-btn {
    width: 36px !important;
    height: 36px !important;
    padding: 0 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-volume {
    grid-column: 1 / -1 !important;
    grid-row: 2 !important;
    width: 100% !important;
    min-width: 0 !important;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) 42px !important;
    gap: 8px !important;
    align-items: center !important;
    padding: 0 2px !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-volume input {
    width: 100% !important;
    min-width: 0 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-volume span {
    display: block !important;
    width: 42px !important;
    color: var(--ui-muted, #6d776f);
    font-size: 10px !important;
    text-align: right;
  }

  body.is-mobile-score-player .mixer-popover .quick-instrument-select {
    grid-column: 1 / -1 !important;
    grid-row: 3 !important;
    width: 100% !important;
    min-width: 0 !important;
    height: 34px !important;
    min-height: 34px !important;
    padding-block: 0 !important;
    font-size: 11px !important;
  }

  body.is-mobile-score-player .mixer-popover > footer {
    width: 100% !important;
    min-width: 0 !important;
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 6px !important;
    padding: 8px max(10px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left)) !important;
    border-top: 1px solid var(--ui-border, #dfe5df) !important;
    background: #fff !important;
  }

  body.is-mobile-score-player .mixer-popover > footer button {
    min-width: 0 !important;
    height: 36px !important;
    padding: 4px 5px !important;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 10px !important;
  }

  body.is-mobile-score-player .listening-mode-actions button {
    min-height: 42px;
    padding: 7px 9px;
    font-size: 10.5px;
    text-align: left;
  }
}

@media (max-width: 900px) {
  body.is-mobile-score-player .mixer-popover.is-open {
    bottom: max(0px, calc(100vh - 100dvh)) !important;
    transform: translate3d(0, 0, 0) !important;
  }
}

/* ======================================================================
   STABILIZATION R15.13 — ROTATION, MOBILE SEEK, COMPACT MIXER
   ====================================================================== */
.mobile-chrome-handle {
  display: none;
}

@media (max-width: 900px) {
  body.is-mobile-score-player .score-viewport {
    position: relative;
  }

  body.is-mobile-score-player .mobile-chrome-handle {
    position: sticky;
    z-index: 40;
    top: 8px;
    float: right;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    margin: 8px 8px -42px 0;
    padding: 0;
    border: 1px solid rgba(28, 49, 36, .18);
    border-radius: 999px;
    background: rgba(255, 255, 255, .90);
    color: var(--vc-green, #147643);
    box-shadow: 0 2px 9px rgba(20, 31, 23, .14);
    backdrop-filter: blur(5px);
    opacity: .82;
    touch-action: manipulation;
  }

  body.is-mobile-score-player .mobile-chrome-handle:hover,
  body.is-mobile-score-player .mobile-chrome-handle:focus-visible,
  body.is-mobile-score-player .mobile-chrome-handle.is-chrome-hidden {
    opacity: 1;
  }

  body.is-mobile-score-player .mobile-chrome-handle .icon {
    width: 18px;
    height: 18px;
  }

  /* All eight actions stay visible. Text remains in accessible labels and
     compact badges; no horizontal strip and no clipped final button. */
  body.is-mobile-score-player .document-actions {
    display: grid !important;
    grid-template-columns: repeat(8, minmax(0, 1fr)) !important;
    gap: 3px !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
  }

  body.is-mobile-score-player .visual-contract-ui .document-actions > button,
  body.is-mobile-score-player .visual-contract-ui .document-actions .state-button,
  body.is-mobile-score-player .visual-contract-ui .document-actions .state-icon-button {
    box-sizing: border-box !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: none !important;
    height: 38px !important;
    min-height: 38px !important;
    flex: none !important;
    padding: 0 !important;
    margin: 0 !important;
    justify-content: center !important;
    overflow: visible !important;
  }

  body.is-mobile-score-player .visual-contract-ui .document-actions .icon {
    width: 18px !important;
    height: 18px !important;
    flex: 0 0 18px !important;
  }

  body.is-mobile-score-player .visual-contract-ui .document-actions .state-button[data-mobile-badge]:not([data-mobile-badge=""])::after {
    right: 0 !important;
    bottom: 0 !important;
    min-width: 14px !important;
    max-width: calc(100% - 2px) !important;
    height: 14px !important;
    padding: 0 2px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    font-size: 7.5px !important;
  }

  /* Two compact rows: identity/actions, then short volume + instrument. */
  body.is-mobile-score-player .mixer-popover .quick-track {
    grid-template-columns: 30px minmax(0, 1fr) 34px 34px !important;
    grid-template-rows: 34px 34px !important;
    gap: 4px 6px !important;
    min-height: 78px !important;
    padding: 6px 8px !important;
    margin-bottom: 5px !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-track.is-selected {
    padding-left: 5px !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-star-btn {
    width: 30px !important;
    height: 30px !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-eye-btn,
  body.is-mobile-score-player .mixer-popover .quick-hear-btn {
    width: 34px !important;
    height: 34px !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-volume {
    grid-column: 1 / 4 !important;
    grid-row: 2 !important;
    display: grid !important;
    grid-template-columns: minmax(70px, 1fr) 34px !important;
    gap: 5px !important;
    width: 100% !important;
    padding: 0 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-volume span {
    width: 34px !important;
    font-size: 9px !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-instrument-select {
    grid-column: 4 !important;
    grid-row: 2 !important;
    width: 100% !important;
    min-width: 0 !important;
    height: 32px !important;
    min-height: 32px !important;
    padding: 0 16px 0 4px !important;
    font-size: 9px !important;
    text-overflow: ellipsis;
  }
}

.visual-contract-ui .quick-track-controls {
  display: contents;
}

@media (max-width: 900px) {
  body.is-mobile-score-player .mixer-popover .quick-track-controls {
    grid-column: 1 / -1 !important;
    grid-row: 2 !important;
    display: grid !important;
    grid-template-columns: minmax(96px, 1fr) minmax(82px, 34%) !important;
    gap: 8px !important;
    align-items: center !important;
    width: 100% !important;
    min-width: 0 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-track-controls .quick-volume {
    grid-column: 1 !important;
    grid-row: 1 !important;
    min-width: 0 !important;
  }

  body.is-mobile-score-player .mixer-popover .quick-track-controls .quick-instrument-select {
    grid-column: 2 !important;
    grid-row: 1 !important;
    width: 100% !important;
    min-width: 0 !important;
    padding-inline: 7px 18px !important;
    font-size: 10px !important;
  }
}

@media (max-width: 900px) {
  body.is-mobile-score-player .mobile-chrome-handle {
    position: fixed !important;
    top: 50% !important;
    right: max(5px, env(safe-area-inset-right)) !important;
    left: auto !important;
    bottom: auto !important;
    float: none !important;
    margin: 0 !important;
    transform: translateY(-50%) !important;
    z-index: 120 !important;
  }
}

@media (min-width: 901px) {
  /* The detailed mixer lives in a narrow settings workspace, not in the full
     page width. Give each track two compact rows instead of squeezing nine
     controls into one line. */
  #moreWorkspace .tracks-head {
    display: none !important;
  }

  #moreWorkspace .track-row {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) repeat(4, 34px) !important;
    grid-template-rows: 36px 36px 28px !important;
    gap: 5px 6px !important;
    align-items: center !important;
    min-width: 0 !important;
    padding: 7px 8px !important;
    overflow: hidden !important;
  }

  #moreWorkspace .track-identity {
    grid-column: 1 !important;
    grid-row: 1 !important;
    display: grid !important;
    grid-template-columns: 26px minmax(0, 1fr) !important;
    gap: 6px !important;
    min-width: 0 !important;
    width: 100% !important;
    padding: 0 !important;
  }

  #moreWorkspace .track-info,
  #moreWorkspace .track-name,
  #moreWorkspace .track-sub {
    min-width: 0 !important;
    max-width: 100% !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
  }

  #moreWorkspace .track-sub {
    font-size: 9px !important;
  }

  #moreWorkspace .hear-toggle { grid-column: 2 !important; grid-row: 1 !important; }
  #moreWorkspace .see-toggle { grid-column: 3 !important; grid-row: 1 !important; }
  #moreWorkspace .track-mini-btn:nth-of-type(2) { grid-column: 4 !important; grid-row: 1 !important; }
  #moreWorkspace .track-mini-btn:nth-of-type(3) { grid-column: 5 !important; grid-row: 1 !important; }

  #moreWorkspace .track-volume {
    grid-column: 1 / 4 !important;
    grid-row: 2 !important;
    min-width: 0 !important;
    width: 100% !important;
  }

  #moreWorkspace .track-instrument-select {
    grid-column: 4 / 6 !important;
    grid-row: 2 !important;
    min-width: 0 !important;
    width: 100% !important;
    height: 34px !important;
    padding: 0 22px 0 7px !important;
    font-size: 10px !important;
  }

  #moreWorkspace .track-more {
    grid-column: 1 !important;
    grid-row: 3 !important;
    min-width: 0 !important;
  }

  #moreWorkspace .track-status {
    grid-column: 2 / 6 !important;
    grid-row: 3 !important;
    min-width: 0 !important;
    overflow: hidden !important;
    text-align: right !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
  }
}

/* ======================================================================
   STABILIZATION R15.13 — structured detailed mixer rows
   Older passes styled every generated control as a direct child of the
   track card.  The settings inspector is narrower, so keep three explicit
   rows whose children cannot leak into legacy grid columns.
   ====================================================================== */
#moreWorkspace .track-row {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) !important;
  grid-template-rows: auto auto auto !important;
  gap: 6px !important;
  min-width: 0 !important;
  width: 100% !important;
  padding: 7px 8px !important;
  overflow: hidden !important;
}

#moreWorkspace .track-primary-row,
#moreWorkspace .track-mix-row,
#moreWorkspace .track-meta-row {
  min-width: 0 !important;
  width: 100% !important;
}

#moreWorkspace .track-primary-row {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) repeat(4, 34px) !important;
  gap: 6px !important;
  align-items: center !important;
}

#moreWorkspace .track-primary-row .track-identity {
  grid-column: 1 !important;
  grid-row: 1 !important;
  min-width: 0 !important;
  width: 100% !important;
}

#moreWorkspace .track-primary-row .hear-toggle,
#moreWorkspace .track-primary-row .see-toggle,
#moreWorkspace .track-primary-row .track-mini-btn {
  grid-row: 1 !important;
  width: 34px !important;
  min-width: 34px !important;
  height: 34px !important;
  margin: 0 !important;
}

#moreWorkspace .track-primary-row .hear-toggle { grid-column: 2 !important; }
#moreWorkspace .track-primary-row .see-toggle { grid-column: 3 !important; }
#moreWorkspace .track-primary-row .track-mini-btn:nth-of-type(2) { grid-column: 4 !important; }
#moreWorkspace .track-primary-row .track-mini-btn:nth-of-type(3) { grid-column: 5 !important; }

#moreWorkspace .track-mix-row {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) minmax(112px, 32%) !important;
  gap: 8px !important;
  align-items: center !important;
}

#moreWorkspace .track-mix-row .track-volume {
  grid-column: 1 !important;
  grid-row: 1 !important;
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) 38px !important;
  gap: 5px !important;
  min-width: 0 !important;
  width: 100% !important;
  max-width: 100% !important;
  overflow: hidden !important;
}

#moreWorkspace .track-mix-row .track-volume input[type="range"] {
  width: 100% !important;
  min-width: 0 !important;
  max-width: 100% !important;
}

#moreWorkspace .track-mix-row .track-instrument-select {
  grid-column: 2 !important;
  grid-row: 1 !important;
  min-width: 0 !important;
  width: 100% !important;
  max-width: 100% !important;
  height: 34px !important;
  padding: 0 22px 0 7px !important;
  font-size: 10px !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
}

#moreWorkspace .track-meta-row {
  display: grid !important;
  grid-template-columns: 34px minmax(0, 1fr) !important;
  gap: 8px !important;
  align-items: center !important;
  min-height: 24px !important;
}

#moreWorkspace .track-meta-row .track-more {
  grid-column: 1 !important;
  grid-row: 1 !important;
  width: 34px !important;
  min-width: 34px !important;
  margin: 0 !important;
}

#moreWorkspace .track-meta-row .track-status {
  grid-column: 2 !important;
  grid-row: 1 !important;
  min-width: 0 !important;
  overflow: hidden !important;
  text-align: right !important;
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
}

@media (max-width: 900px) {
  body.is-mobile-score-player #moreWorkspace .track-row {
    grid-template-columns: minmax(0, 1fr) !important;
    grid-template-rows: auto auto auto !important;
  }

  body.is-mobile-score-player #moreWorkspace .track-primary-row {
    grid-template-columns: minmax(0, 1fr) repeat(4, 34px) !important;
  }

  body.is-mobile-score-player #moreWorkspace .track-mix-row {
    grid-template-columns: minmax(0, 1fr) minmax(104px, 34%) !important;
  }
}

#moreWorkspace .track-primary-row .track-info {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) !important;
  grid-template-rows: auto auto !important;
  align-content: center !important;
  justify-items: start !important;
  min-width: 0 !important;
  width: 100% !important;
  text-align: left !important;
}

#moreWorkspace .track-primary-row .track-name,
#moreWorkspace .track-primary-row .track-sub {
  display: block !important;
  min-width: 0 !important;
  max-width: 100% !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
  text-align: left !important;
}

#moreWorkspace .track-primary-row .track-name {
  font-size: 12px !important;
  line-height: 15px !important;
}

#moreWorkspace .track-primary-row .track-sub {
  margin: 0 !important;
  font-size: 9px !important;
  line-height: 11px !important;
}

@media (max-width: 900px) {
  body.is-mobile-score-player .mixer-popover .quick-track-controls {
    grid-template-columns: minmax(86px, 58%) minmax(96px, 42%) !important;
  }
}

/* ======================================================================
   STABILIZATION R15.14 — FINAL MIXER, VISIBILITY AND ROTATION POLISH
   ====================================================================== */
.score-part-visibility-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
  margin: 0 0 8px;
}
.score-part-visibility-actions button {
  min-width: 0;
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid var(--ui-border, #dfe5df);
  border-radius: 9px;
  background: #fff;
  color: var(--ui-ink, #1f2b24);
  font-size: 11px;
  font-weight: 650;
}
.score-part-visibility-actions button.is-active {
  border-color: rgba(22, 132, 69, .42);
  background: var(--ui-green-soft, #e9f5ed);
  color: var(--ui-green-dark, #0f6b37);
}
.score-part-visibility-actions .icon {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
}

.listening-mode-actions {
  gap: 6px !important;
}
.listening-mode-actions button {
  display: grid !important;
  grid-template-columns: 20px minmax(0, 1fr) !important;
  align-items: center !important;
  gap: 8px !important;
  min-width: 0 !important;
  text-align: left !important;
}
.listening-mode-actions button .icon {
  width: 18px !important;
  height: 18px !important;
  color: var(--ui-green, #168445);
}
.listening-mode-actions button span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Detailed mixer: exactly two useful rows. The removed ellipsis did not open
   anything and the identity is text, not an input requiring a grey frame. */
#moreWorkspace .track-row {
  grid-template-rows: 32px 32px !important;
  gap: 4px !important;
  padding: 5px 7px !important;
  min-height: 74px !important;
}
#moreWorkspace .track-meta-row,
#moreWorkspace .track-more,
#moreWorkspace .track-status {
  display: none !important;
}
#moreWorkspace .track-primary-row {
  grid-template-columns: minmax(0, 1fr) repeat(4, 30px) !important;
  gap: 5px !important;
}
#moreWorkspace .track-primary-row .track-identity {
  min-height: 30px !important;
  height: 30px !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}
#moreWorkspace .track-primary-row .track-initial {
  width: 24px !important;
  height: 24px !important;
  min-width: 24px !important;
  border-radius: 7px !important;
  font-size: 10px !important;
}
#moreWorkspace .track-primary-row .hear-toggle,
#moreWorkspace .track-primary-row .see-toggle,
#moreWorkspace .track-primary-row .track-mini-btn {
  width: 30px !important;
  min-width: 30px !important;
  height: 30px !important;
}
#moreWorkspace .track-mix-row {
  grid-template-columns: minmax(0, 1fr) minmax(96px, 31%) !important;
  gap: 7px !important;
}
#moreWorkspace .track-mix-row .track-volume {
  grid-template-columns: minmax(0, 1fr) 34px !important;
  gap: 4px !important;
}
#moreWorkspace .track-mix-row .track-instrument-select {
  height: 30px !important;
  min-height: 30px !important;
  padding: 0 20px 0 6px !important;
  font-size: 9.5px !important;
}
#moreWorkspace .track-primary-row .track-name {
  font-size: 11px !important;
  line-height: 13px !important;
}
#moreWorkspace .track-primary-row .track-sub {
  font-size: 8px !important;
  line-height: 9px !important;
}

/* The single-row frame is a hard crop. A half-pixel inset suppresses browser
   antialiasing remnants from the next system after rotation. */
#score.cs-system-view-active .cs-system-view-page-root,
#score.cs-system-view-active .cs-system-view-clip-root {
  overflow: hidden !important;
  clip-path: inset(0.75px) !important;
  isolation: isolate !important;
  contain: layout paint size !important;
}
#score.cs-system-view-active .cs-system-view-page {
  overflow: hidden !important;
  clip-path: inset(0.75px) !important;
  contain: strict !important;
}
body.is-viewport-settling .cursor-marker,
body.is-viewport-settling .selected-part-underlay-layer,
body.is-viewport-settling .fragment-selection {
  visibility: hidden !important;
}
body.is-viewport-settling.is-system-score-view #score {
  opacity: 0 !important;
}

@media (max-width: 900px) {
  body.is-mobile-score-player .score-part-visibility-actions button {
    min-height: 38px;
    font-size: 10px;
  }
  body.is-mobile-score-player .listening-mode-actions button {
    min-height: 38px !important;
    padding: 6px 8px !important;
    font-size: 10px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-track {
    grid-template-rows: 30px 30px !important;
    min-height: 70px !important;
    padding: 5px 7px !important;
    gap: 4px 6px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-star-btn {
    width: 28px !important;
    height: 28px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-eye-btn,
  body.is-mobile-score-player .mixer-popover .quick-hear-btn {
    width: 30px !important;
    height: 30px !important;
  }
  body.is-mobile-score-player .mixer-popover .quick-track-controls .quick-instrument-select {
    height: 30px !important;
    min-height: 30px !important;
  }
}

/* ======================================================================
   STABILIZATION R15.15 — PROFESSIONAL BOOT, HEADER CLEANUP
   ====================================================================== */
.visual-contract-ui .save-state {
  gap: 0;
  min-width: 24px;
  justify-content: center;
}

@media (max-width: 900px) {
  body.is-mobile-score-player .visual-contract-ui .document-bar {
    grid-template-columns: minmax(0, 1fr) 88px !important;
  }

  body.is-mobile-score-player .visual-contract-ui .open-score-button {
    display: inline-flex !important;
    width: 88px !important;
    min-width: 88px !important;
    height: 42px !important;
    padding: 0 12px !important;
    gap: 7px !important;
    justify-content: center !important;
  }

  body.is-mobile-score-player .visual-contract-ui .open-score-button .icon {
    width: 21px !important;
    height: 21px !important;
    flex: 0 0 auto;
  }

  body.is-mobile-score-player .visual-contract-ui .open-score-button .open-score-label-full {
    display: none !important;
  }

  body.is-mobile-score-player .visual-contract-ui .open-score-button .open-score-label-mobile {
    display: inline !important;
    position: static !important;
    width: auto !important;
    height: auto !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: nowrap !important;
    font-size: 11px !important;
    line-height: 1 !important;
    font-weight: 760 !important;
  }

  body.is-mobile-score-player .visual-contract-ui .save-state {
    max-width: 30px !important;
    overflow: visible !important;
  }
}

@media (max-width: 900px) and (orientation: landscape) {
  body.is-mobile-score-player .visual-contract-ui .document-bar {
    grid-template-columns: minmax(150px, 1fr) 88px minmax(0, 2fr) !important;
  }
}

/* R16.0 — explicit Standard / Muse Sounds source selection. */
.sound-set-badge {
  display: inline-flex;
  align-items: center;
  min-height: 18px;
  padding: 1px 6px;
  border-radius: 999px;
  background: #eef3ef;
  color: #5d6b61;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: .02em;
  white-space: nowrap;
}
.sound-set-badge.is-premium { background: #fff2c7; color: #855a00; }
.sound-set-panel {
  display: grid;
  gap: 12px;
  margin: 0 0 16px;
  padding: 14px;
  border: 1px solid var(--ui-border, #dfe7e0);
  border-radius: 14px;
  background: linear-gradient(145deg, #fbfdfb, #f5f8f5);
}
.sound-set-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.sound-set-heading > div { display: grid; gap: 3px; }
.sound-set-heading strong { font-size: 14px; }
.sound-set-heading span { color: #69746c; font-size: 11px; line-height: 1.35; }
.sound-set-heading > .icon { width: 20px; height: 20px; color: #1c8b4d; }
.sound-set-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.sound-set-option {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  align-items: center;
  gap: 9px;
  min-height: 64px;
  padding: 10px;
  border: 1px solid #dbe3dc;
  border-radius: 12px;
  background: #fff;
  color: #263029;
  text-align: left;
}
.sound-set-option > .icon { width: 22px; height: 22px; color: #728077; }
.sound-set-option span { display: grid; gap: 3px; min-width: 0; }
.sound-set-option strong { font-size: 13px; }
.sound-set-option strong b { display: inline-block; margin-left: 4px; padding: 1px 5px; border-radius: 999px; background: #fff1bf; color: #855a00; font-size: 8px; text-transform: uppercase; }
.sound-set-option small { color: #748078; font-size: 10px; line-height: 1.3; }
.sound-set-option.is-active { border-color: #25945a; background: #edf8f1; box-shadow: 0 0 0 2px rgba(37, 148, 90, .10); }
.sound-set-option.is-active > .icon { color: #168445; }
.premium-sound-status { display: grid; gap: 9px; padding: 10px 11px; border-radius: 10px; background: #fff; border: 1px solid #dfe6e0; }
.premium-sound-status > div:first-child { display: grid; grid-template-columns: 24px minmax(0, 1fr) auto; align-items: center; gap: 8px; }
.premium-sound-status span { display: grid; gap: 2px; min-width: 0; }
.premium-sound-status strong { font-size: 12px; }
.premium-sound-status small { color: #727d75; font-size: 10px; line-height: 1.3; }
.premium-sound-status > div:first-child > b { font-size: 10px; color: #647068; }
.premium-sound-status progress { width: 100%; height: 7px; }
.premium-status-icon { width: 18px; height: 18px; color: #718078; }
.premium-sound-status[data-state="ready"] { border-color: #b8dfc7; background: #f1faf4; }
.premium-sound-status[data-state="ready"] .premium-status-icon { color: #168445; }
.premium-sound-status[data-state="error"] { border-color: #edc1be; background: #fff5f4; }
.premium-sound-status[data-state="error"] .premium-status-icon { color: #c43d35; }
.premium-sound-status[data-state="preparing"] .premium-status-icon { animation: custos-boot-spin .9s linear infinite; }
.premium-sound-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.premium-sound-actions button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid #19884a;
  border-radius: 10px;
  background: #1d914f;
  color: #fff;
  font: inherit;
  font-size: 11px;
  font-weight: 750;
  line-height: 1.15;
}
.premium-sound-actions button .icon { width: 16px; height: 16px; }
.premium-sound-actions button:hover { background: #168445; }
.premium-sound-actions button.danger { background: #b42318; border-color: #912018; color: #fff !important; }
.premium-sound-actions button.danger:hover { background: #912018; }
.premium-sound-actions button:disabled { opacity: .55; cursor: wait; }
.premium-sound-actions button.text-button {
  border-color: #d4ddd6;
  background: #fff;
  color: #263029;
}
.premium-sound-actions button[hidden] { display: none; }
.premium-sound-status details pre { max-height: 160px; overflow: auto; margin: 8px 0 0; white-space: pre-wrap; font-size: 10px; }
body.sound-set-muse .quick-instrument-select,
body.sound-set-muse .track-instrument-select {
  opacity: 1;
  pointer-events: auto;
  color: #263029;
  background-color: #fff;
  -moz-appearance: auto;
}

/* Firefox can inherit the muted row's opacity/filter into a native select.
   Keep a ready instrument control visibly interactive and reserve disabled
   styling for the genuinely unavailable pending state. */
body.sound-set-muse .quick-instrument-select:not(:disabled),
body.sound-set-muse .track-instrument-select:not(:disabled) {
  opacity: 1 !important;
  filter: none !important;
  color: #17241b !important;
  background: #fff !important;
  pointer-events: auto !important;
}
body.sound-set-muse .quick-instrument-select:not(:disabled) option,
body.sound-set-muse .track-instrument-select:not(:disabled) option {
  color: #17241b !important;
  background: #fff !important;
}
.premium-sound-actions button.danger,
.premium-sound-actions button.danger:hover,
.premium-sound-actions button.danger:focus-visible {
  color: #fff !important;
  background: #8f1d18 !important;
  border-color: #721611 !important;
  opacity: 1 !important;
  filter: none !important;
}
.premium-sound-actions button.danger:focus-visible {
  outline: 3px solid rgba(143, 29, 24, .28);
  outline-offset: 2px;
}

@media (max-width: 760px) {
  .sound-set-options { grid-template-columns: 1fr; }
  .sound-set-option { min-height: 58px; }
  .sound-set-badge { display: none; }
}

/* R16.0.7 Premium FLAC variants */
.premium-render-options {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 12px;
  margin: 0;
  padding: 9px 10px;
  border: 1px solid #dfe6e0;
  border-radius: 9px;
  background: #fbfcfb;
}
.premium-render-options legend { padding: 0 5px; font-size: 11px; font-weight: 700; color: #536057; }
.premium-render-options label { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; }
.premium-render-options .premium-articulation-option { flex-basis: 100%; padding-top: 2px; }
.premium-apply-all { display: grid; grid-template-columns: minmax(0, 1fr) minmax(120px, 180px); align-items: center; gap: 8px; }
.premium-apply-all label { font-size: 11px; color: #5f6b63; }
.premium-apply-all select { min-height: 34px; }


/* R16.0.15.2 — compact source-aware quick mixer. */
.mixer-apply-all {
  display: grid;
  grid-template-columns: auto minmax(140px, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-top: 1px solid #e2e8e3;
  background: #f7faf8;
}
.mixer-apply-all label {
  color: #526059;
  font-size: 11px;
  font-weight: 750;
  white-space: nowrap;
}
.mixer-apply-all select {
  min-width: 0;
  height: 34px;
  border: 1px solid #cfd9d1;
  border-radius: 9px;
  background: #fff;
  color: #1e2b23;
  padding: 0 28px 0 9px;
}
.mixer-apply-all button {
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid #1c8a4e;
  border-radius: 9px;
  background: #edf8f1;
  color: #126f3d;
  font-weight: 750;
}
.mixer-apply-all button:hover { background: #dff2e6; }
.mobile-mixer-header #mixerSoundSource { color: #627068; font-weight: 600; }

/* VexFlow emits augmentation dots as modifier groups. OSMD 1.9.2 can place
   them visually too far to the right on compact eighth-note clusters. Keep
   the logical geometry untouched and tighten only the rendered glyph. */
#score svg .vf-dot,
#score svg [class~="vf-dot"] {
  transform-box: fill-box;
  transform-origin: center;
  translate: -2px 0;
}

@media (max-width: 760px) {
  .mixer-apply-all {
    grid-template-columns: minmax(0, 1fr) auto;
  }
  .mixer-apply-all label { grid-column: 1 / -1; }
}

/* R16.0.15.3: one optional effect after the aggregate music mix. */
.mixer-master-effect {
  display: grid;
  gap: 7px;
  padding: 10px 14px 12px;
  border-top: 1px solid var(--vc-border, var(--ui-border));
  background: rgba(248, 250, 248, .78);
}
.mixer-master-effect label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.mixer-master-effect label span,
.mixer-master-effect label strong,
.mixer-master-effect label small { display: block; }
.mixer-master-effect label strong { font-size: 13px; }
.mixer-master-effect label small { margin-top: 2px; color: var(--muted); font-size: 11px; }
.mixer-master-effect output { min-width: 38px; text-align: right; font-variant-numeric: tabular-nums; }
.mixer-master-effect input { width: 100%; }

#currentMeasureValue[data-playback-index]:not([data-playback-index=""]) {
  white-space: nowrap;
}