:root {
  --bg-primary: #0f1117;
  --bg-card: #161b22;
  --bg-input: #0d1117;
  --bg-elevated: #21262d;
  --border: #21262d;
  --border-hover: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent: #4a8;
  --accent-hover: #3b9;
  --accent-glow: rgba(68, 170, 136, 0.15);
  --accent-shadow: rgba(68, 170, 136, 0.3);
  --melody-color: rgba(255, 213, 74, 0.85);
  --chord-color: rgba(74, 170, 136, 0.35);
  --locked-bg: rgba(74, 170, 136, 0.08);
  --bass-color: rgba(100, 149, 237, 0.5);
  --melody2-color: rgba(199, 125, 255, 0.75);
  --key-white: #f0f0f0;
  --key-black: #1a1a1a;
  --danger: #f85149;
  --warning: #e8a735;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg-primary: #f6f8fa;
  --bg-card: #ffffff;
  --bg-input: #f0f2f5;
  --bg-elevated: #e1e4e8;
  --border: #c4cad1;
  --border-hover: #a3aab3;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #8b949e;
  --accent: #2da672;
  --accent-hover: #26905f;
  --accent-glow: rgba(45, 166, 114, 0.15);
  --accent-shadow: rgba(45, 166, 114, 0.25);
  --melody-color: rgba(200, 160, 30, 0.85);
  --chord-color: rgba(45, 166, 114, 0.3);
  --locked-bg: rgba(45, 166, 114, 0.08);
  --bass-color: rgba(70, 120, 200, 0.5);
  --melody2-color: rgba(155, 89, 182, 0.7);
  --key-white: #ffffff;
  --key-black: #2d2d2d;
  --danger: #cf222e;
  --warning: #bf8700;
  color-scheme: light;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 200ms, color 200ms;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 0;
  gap: 0;
}

button {
  font-family: inherit;
}

/* ---- Sidebar / drawer ---- */

.hero-menu-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background-color 150ms, color 150ms, border-color 150ms;
  flex-shrink: 0;
}

.hero-menu-btn:hover {
  background: var(--accent-glow);
  color: var(--accent);
  border-color: var(--accent);
}

.hero-menu-btn[aria-expanded="true"] {
  color: var(--accent);
  border-color: var(--accent);
}

.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 240px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  z-index: 90;
  display: flex;
  flex-direction: column;
  padding: 14px 12px;
  gap: 12px;
  transform: translateX(-100%);
  transition: transform 220ms ease;
}

.sidebar.open {
  transform: translateX(0);
}

@media (min-width: 901px) {
  body.sidebar-open {
    padding-left: 240px;
    transition: padding-left 220ms ease;
  }
  body.sidebar-open .install-banner {
    left: calc(50% + 120px);
  }
}

@media (max-width: 900px) {
  .sidebar {
    width: 280px;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.4);
  }

  .compose-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .compose-toolbar-primary {
    width: 100%;
    justify-content: center;
  }

  .compose-toolbar-secondary {
    margin-left: 0;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
  }

  .learn-head-side {
    align-items: flex-start;
    width: 100%;
    min-width: 0;
  }

  .learn-progress-wrap {
    width: 100%;
  }

  .learn-progress-bar {
    flex: 1;
  }

  .section-block-main {
    grid-template-columns: auto 1fr;
    gap: 10px 12px;
  }

  .section-block-actions {
    grid-column: 1 / -1;
    justify-content: flex-end;
    border-top: 1px dashed var(--border);
    padding-top: 10px;
    margin-top: 4px;
  }

  .view-head {
    padding: 18px 16px 14px;
  }
  .compose-shell, .learn-shell {
    padding: 18px 16px 24px;
  }
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 6px 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

.sidebar-logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.sidebar-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 8px;
  display: none;
}

.sidebar-close:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

@media (max-width: 900px) {
  .sidebar-close {
    display: block;
  }
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background-color 150ms, color 150ms;
  position: relative;
}

.sidebar-link:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.sidebar-link.active {
  background: var(--accent-glow);
  color: var(--accent);
}

.sidebar-link svg {
  flex-shrink: 0;
}

.sidebar-link span:nth-child(2) {
  flex: 1;
}

.sidebar-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
}

.sidebar-badge-soon {
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.sidebar-link-small {
  font-size: 12px;
  padding: 8px 12px;
  color: var(--text-muted);
}

.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 89;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

.sidebar-backdrop.visible {
  opacity: 1;
  pointer-events: auto;
}

.sidebar-backdrop[hidden] {
  display: none;
}

.view-hidden {
  display: none !important;
}

/* ---- Views ---- */

.view-host {
  position: relative;
}

.app-view {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
  overflow-y: auto;
}

.app-view.hidden {
  display: none;
}

.view-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.view-title {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.view-sub {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 13px;
}

.view-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.view-cta {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 150ms, transform 150ms, box-shadow 150ms;
  height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.view-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 10px var(--accent-shadow);
}

.view-cta:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.view-cta-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 150ms, color 150ms;
  height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.view-cta-secondary:hover {
  background: var(--accent);
  color: #fff;
}

.view-cta-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 150ms, color 150ms, border-color 150ms;
  height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.view-cta-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.compose-clear-btn:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(248, 81, 73, 0.06);
}

.overlay-close-x {
  position: absolute;
  top: 12px;
  right: 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 6px;
  z-index: 1;
  transition: color 150ms, background-color 150ms;
}

.overlay-close-x:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

.status-todo {
  background: var(--text-muted);
  opacity: 0.5;
}

/* ---- Explore view ---- */

.explore-shell {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
}

.explore-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.explore-stats {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-secondary);
}

.explore-stat b {
  color: var(--text-primary);
  font-weight: 600;
}

.feed-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  padding: 8px 0;
}

.feed-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
  transition: transform 220ms ease, opacity 220ms ease;
  touch-action: pan-y;
}

.feed-card.swipe-left { transform: translateX(-110%) rotate(-8deg); opacity: 0; }
.feed-card.swipe-right { transform: translateX(110%) rotate(8deg); opacity: 0; }
.feed-card.swipe-up { transform: translateY(-110%); opacity: 0; }

.feed-card-canvas-wrap {
  position: relative;
  background: var(--bg-input);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feed-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.feed-play {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  border: 2px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  transition: background-color 150ms, transform 150ms;
}

.feed-play:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.05);
}

.feed-play.playing svg {
  display: none;
}

.feed-play.playing::after {
  content: '';
  display: block;
  width: 24px;
  height: 24px;
  background:
    linear-gradient(currentColor, currentColor) left/8px 100% no-repeat,
    linear-gradient(currentColor, currentColor) right/8px 100% no-repeat;
}

.feed-meta {
  padding: 14px 18px;
  border-top: 1px solid var(--border);
}

.feed-seed {
  font-family: monospace;
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.feed-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.feed-tag {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 12px;
}

.feed-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
}

.feed-action {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--border-hover);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 120ms, background-color 150ms, color 150ms, border-color 150ms;
  flex-shrink: 0;
}

.feed-action:hover {
  transform: translateY(-2px);
}

.feed-action-skip:hover { color: var(--danger); border-color: var(--danger); }
.feed-action-save:hover { color: #6cb6ff; border-color: #6cb6ff; }
.feed-action-like { width: 68px; height: 68px; }
.feed-action-like:hover { background: #ff5d8f; color: #fff; border-color: #ff5d8f; }

.feed-action.fly-skip { animation: fly-skip 350ms ease-out forwards; }
.feed-action.fly-like { animation: fly-like 350ms ease-out forwards; }

@keyframes fly-skip {
  0% { transform: scale(1); }
  50% { transform: scale(1.15) translateX(-8px); }
  100% { transform: scale(1) translateX(0); }
}

@keyframes fly-like {
  0% { transform: scale(1); }
  50% { transform: scale(1.2) translateX(8px); }
  100% { transform: scale(1) translateX(0); }
}

.feed-hint {
  font-size: 11px;
  text-align: center;
  opacity: 0.5;
  margin-top: 4px;
}

.wrapped-card {
  max-width: 480px;
  position: relative;
  padding-top: 32px;
}

.wrapped-card h2 {
  margin-bottom: 14px;
}

.wrapped-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 18px;
}

.feed-tag-affinity {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.wrapped-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.wrapped-stat:last-child { border-bottom: none; }

.wrapped-stat-label {
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 11px;
}

.wrapped-stat-value {
  color: var(--text-primary);
  font-weight: 600;
}

.wrapped-empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 24px 8px;
}

/* ---- Compose view ---- */

.compose-shell {
  padding: 22px 22px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.compose-timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.compose-empty {
  color: var(--text-secondary);
  text-align: center;
  padding: 20px;
}

.compose-empty[hidden] { display: none; }

.compose-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin-top: 4px;
}

.compose-toolbar-primary {
  flex: 0 0 auto;
}

.compose-toolbar-secondary {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.compose-status {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  width: fit-content;
}

.compose-status[hidden] { display: none; }

.compose-status-time {
  font-family: monospace;
  font-weight: 500;
  opacity: 0.8;
}

.compose-play-icon {
  font-size: 12px;
  display: inline-block;
  margin-right: 6px;
}

#compose-play.compose-play-active {
  background: var(--danger);
}

#compose-play.compose-play-active:hover {
  background: var(--danger);
  filter: brightness(1.1);
}

.section-block.section-block-active {
  border-color: var(--accent);
  background: linear-gradient(0deg, var(--accent-glow), var(--bg-card));
  box-shadow: 0 0 0 1px var(--accent), 0 8px 22px -10px rgba(56, 191, 136, 0.4);
}

.section-block.section-block-active .section-block-index {
  background: var(--accent);
  color: #fff;
  position: relative;
}

/* Equalizer-style "playing" badge on the active section. */
.section-block.section-block-active .section-block-index::after {
  content: '';
  display: inline-block;
  margin-left: 6px;
  width: 10px;
  height: 12px;
  vertical-align: -2px;
  background:
    linear-gradient(currentColor, currentColor) left   bottom / 2px var(--bar1, 60%) no-repeat,
    linear-gradient(currentColor, currentColor) center bottom / 2px var(--bar2, 40%) no-repeat,
    linear-gradient(currentColor, currentColor) right  bottom / 2px var(--bar3, 80%) no-repeat;
  animation: section-eq 720ms ease-in-out infinite alternate;
}

@keyframes section-eq {
  0%   { --bar1: 30%; --bar2: 80%; --bar3: 50%; }
  100% { --bar1: 80%; --bar2: 30%; --bar3: 90%; }
}

.section-block {
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  border-radius: 12px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  cursor: grab;
  transition: opacity 150ms, border-color 150ms, transform 150ms, box-shadow 200ms;
  animation: section-block-in 240ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes section-block-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.section-block-main {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
}

.section-block.section-editing { border-color: var(--accent); }

.section-block:active { cursor: grabbing; }

.section-block.dragging {
  opacity: 0.45;
  transform: scale(0.98);
}

.section-block.drop-before { border-top: 2px solid var(--accent); }
.section-block.drop-after { border-bottom: 2px solid var(--accent); }

.section-block-grip {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  cursor: grab;
  flex-shrink: 0;
}

.section-block-grip:hover { color: var(--accent); }

.section-block-body {
  min-width: 0;
}

.section-block-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.section-block-index {
  font-family: monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 3px 8px;
  border-radius: 999px;
  flex-shrink: 0;
}

.section-block-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: none;
  border-bottom: 1px dashed transparent;
  padding: 2px 0;
  font-family: inherit;
  width: 100%;
  min-width: 0;
}

.section-block-name:focus {
  outline: none;
  border-bottom-color: var(--accent);
}

.section-block-meta {
  font-family: monospace;
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
}

.section-block-meta .section-meta-sep {
  color: var(--text-muted);
  opacity: 0.5;
}

/* Pill-style chips for each piece of meta — easier to scan than a "·"-joined run. */
.section-meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: monospace;
  font-size: 11px;
  letter-spacing: 0;
  white-space: nowrap;
}

.section-meta-chip-voice {
  text-transform: capitalize;
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.section-block-tracks {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.section-track-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: inherit;
  transition: color 150ms, border-color 150ms, background-color 150ms;
}

.section-track-chip:hover { color: var(--text-primary); border-color: var(--border-hover); }

.section-track-chip.active {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-elevated);
}

.section-track-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.4;
}

.section-track-chip.active .section-track-dot { opacity: 1; }
.section-track-dot-melody { background: var(--melody-color); }
.section-track-dot-chord { background: var(--chord-color); }
.section-track-dot-bass { background: var(--bass-color); }

.section-block-editor {
  margin-top: 12px;
  padding: 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.section-block-editor[hidden] { display: none; }

.section-edit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px 14px;
}

.section-edit-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
}

.section-edit-field > span {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.section-edit-field em {
  font-style: normal;
  font-weight: 600;
  color: var(--text-primary);
  font-family: monospace;
  text-transform: none;
  letter-spacing: 0;
  font-size: 11px;
}

.section-edit-field select,
.section-edit-field input[type="range"] {
  width: 100%;
}

.section-block-actions {
  display: flex;
  gap: 6px;
}

.section-block-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 14px;
  transition: color 150ms, border-color 150ms, background-color 150ms, transform 100ms;
}

.section-block-btn:active { transform: scale(0.92); }

.section-block-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.section-block-btn-danger:hover {
  color: var(--danger);
  border-color: var(--danger);
  background: rgba(248, 81, 73, 0.08);
}

.section-block-btn.danger:hover {
  color: var(--danger);
  border-color: var(--danger);
}

.compose-tool-group {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  overflow: hidden;
  height: 36px;
}

.compose-tool-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-family: inherit;
  transition: background-color 150ms, color 150ms;
}

.compose-tool-btn + .compose-tool-btn {
  border-left: 1px solid var(--border);
}

.compose-tool-btn:hover:not(:disabled) {
  background: var(--accent-glow);
  color: var(--accent);
}

.compose-tool-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

label.compose-tool-btn { cursor: pointer; }
label.compose-tool-btn:has(input:disabled) { cursor: not-allowed; opacity: 0.35; }

.roadmap-disclosure {
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-muted);
  align-self: flex-start;
  max-width: 520px;
}

.roadmap-disclosure summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--text-secondary);
  user-select: none;
}

.roadmap-disclosure summary::-webkit-details-marker { display: none; }

.roadmap-disclosure summary:hover {
  color: var(--accent);
  background: var(--accent-glow);
}

.roadmap-icon {
  font-size: 11px;
  opacity: 0.7;
}

.roadmap-disclosure[open] .roadmap-icon { transform: rotate(45deg); display: inline-block; transition: transform 180ms; }

.roadmap-disclosure ul {
  list-style: none;
  padding: 12px 14px 0 24px;
  margin: 4px 0 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.roadmap-disclosure li {
  position: relative;
}

.roadmap-disclosure li::before {
  content: '·';
  position: absolute;
  left: -10px;
  color: var(--text-muted);
}

/* ---- Learn view ---- */

.learn-shell {
  padding: 22px 22px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.settings-shell {
  padding: 22px 22px 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  max-width: 720px;
}

.settings-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.settings-section-title {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.settings-text {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 60ch;
}

.settings-language,
.settings-theme {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.settings-lang,
.settings-theme-btn {
  background: transparent;
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  transition: color 150ms, background-color 150ms, border-color 150ms;
}

.settings-lang:hover,
.settings-theme-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.settings-lang.active,
.settings-theme-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.settings-section.settings-danger {
  border-color: rgba(248, 81, 73, 0.35);
}

.learn-head { padding-bottom: 20px; }

.learn-head-title { min-width: 0; flex: 1; }
.learn-head-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  min-width: 220px;
}

.learn-progress-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.learn-streak {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-secondary);
  filter: grayscale(0.6);
  opacity: 0.75;
}

.learn-streak.learn-streak-active {
  filter: none;
  opacity: 1;
  border-color: var(--warning);
  background: rgba(232, 167, 53, 0.08);
}

.learn-streak.learn-streak-today b { color: var(--warning); }

.learn-streak-icon { font-size: 14px; line-height: 1; }
.learn-streak b { color: var(--text-primary); }
.learn-streak-best {
  font-size: 11px;
  opacity: 0.7;
  border-left: 1px solid var(--border);
  padding-left: 8px;
}

.learn-progress-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.learn-progress-bar {
  width: 120px;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

#learn-progress-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 240ms ease;
}

.learn-progress-pct {
  font-family: monospace;
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 32px;
}

.learn-continue {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: linear-gradient(135deg, var(--accent-glow), transparent);
  border: 1px solid var(--accent);
  border-radius: 14px;
  flex-wrap: wrap;
}

.learn-continue[hidden] { display: none; }

.learn-continue-eyebrow {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.learn-continue-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 4px 0 2px;
}

.learn-continue-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
  max-width: 520px;
  line-height: 1.45;
}

.learn-modules {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

/* ---- Exercise stage (v2 — full surface, sheet-first) ---- */

.exercise-stage {
  align-items: stretch;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
}

.exercise-shell {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  width: 100%;
  max-width: 760px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 18px 24px 22px;
  position: relative;
  max-height: calc(100vh - 48px);
  animation: exercise-shell-in 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes exercise-shell-in {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.exercise-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0;
}

.exercise-head-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-width: 0;
  flex: 1;
}

.exercise-module-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.exercise-tag-chip {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.exercise-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  transition: background-color 160ms, color 160ms, border-color 160ms, transform 120ms;
}

.exercise-nav-btn:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

.exercise-nav-btn:active { transform: scale(0.94); }

.exercise-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.exercise-shell .exercise-title {
  margin: 0;
  font-size: 28px;
  color: var(--text-primary);
  text-transform: none;
  letter-spacing: -0.01em;
  font-weight: 700;
  line-height: 1.15;
}

.exercise-controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.exercise-control {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 140px;
}

.exercise-control-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.exercise-control-label em {
  font-style: normal;
  font-family: monospace;
  font-size: 12px;
  color: var(--text-primary);
  text-transform: none;
  letter-spacing: 0;
}

.exercise-stepper {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  padding: 4px 10px;
  width: fit-content;
}

.exercise-stepper > span {
  font-family: monospace;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 30px;
  text-align: center;
}

.exercise-step-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 18px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  border-radius: 6px;
}

.exercise-step-btn:hover { background: var(--accent-glow); color: var(--accent); }

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

.exercise-clef-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.exercise-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: color 150ms, border-color 150ms, background-color 150ms;
}

.exercise-pill:hover { color: var(--accent); border-color: var(--accent); }

.exercise-pill.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---- Step rail (replaces step-dots) ---- */
.exercise-step-rail {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0;
}

.exercise-step-rail-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 4px 0 6px;
  font-family: inherit;
  position: relative;
  transition: opacity 160ms;
}

.exercise-step-rail-item:not(.current):not(.done) { opacity: 0.55; }
.exercise-step-rail-item:hover { opacity: 1; }
.exercise-step-rail-item:focus { outline: none; }
.exercise-step-rail-item:focus-visible .exercise-step-rail-icon {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.exercise-step-rail-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-input);
  border: 1.5px solid var(--border-hover);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
  font-family: monospace;
  transition: background-color 200ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 200ms,
              color 200ms,
              transform 220ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 200ms;
}

.exercise-step-rail-item.done .exercise-step-rail-icon {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.exercise-step-rail-item.current .exercise-step-rail-icon {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: scale(1.15);
  box-shadow: 0 0 0 4px var(--accent-glow);
  animation: rail-current-pulse 1.8s ease-in-out infinite;
}

@keyframes rail-current-pulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--accent-glow); }
  50%      { box-shadow: 0 0 0 7px rgba(56, 191, 136, 0.08); }
}

.exercise-step-rail-item.just-completed .exercise-step-rail-icon {
  animation: rail-check-pop 480ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes rail-check-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.35); }
  100% { transform: scale(1); }
}

.exercise-step-rail-type {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 3px;
}

.exercise-step-rail-item.current .exercise-step-rail-type { color: var(--accent); }
.exercise-step-rail-item.done .exercise-step-rail-type { color: var(--text-secondary); }

.exercise-step-rail-connector {
  flex: 0 0 24px;
  height: 2px;
  background: var(--border);
  align-self: center;
  margin-top: -22px;
  border-radius: 1px;
  transition: background-color 200ms;
}

.exercise-step-rail-connector.done { background: var(--accent); }

@media (max-width: 600px) {
  .exercise-step-rail-icon { width: 26px; height: 26px; font-size: 11px; }
  .exercise-step-rail-type { display: none; }
  .exercise-step-rail-connector { flex-basis: 12px; margin-top: 0; }
}

.exercise-desc strong { color: var(--text-primary); font-weight: 600; }
.exercise-desc {
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 4px;
  font-size: 15px;
}

/* Slide transition wrapper for step content */
.exercise-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
  flex: 1 1 auto;
}

.exercise-content.slide-out-left {
  animation: slide-out-left 180ms cubic-bezier(0.4, 0, 1, 1) forwards;
}
.exercise-content.slide-out-right {
  animation: slide-out-right 180ms cubic-bezier(0.4, 0, 1, 1) forwards;
}
.exercise-content.slide-in-from-right {
  animation: slide-in-from-right 260ms cubic-bezier(0.16, 1, 0.3, 1);
}
.exercise-content.slide-in-from-left {
  animation: slide-in-from-left 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slide-out-left  { to { opacity: 0; transform: translateX(-24px); } }
@keyframes slide-out-right { to { opacity: 0; transform: translateX(24px); } }
@keyframes slide-in-from-right { from { opacity: 0; transform: translateX(28px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slide-in-from-left  { from { opacity: 0; transform: translateX(-28px); } to { opacity: 1; transform: translateX(0); } }

/* Stage block wrapping sheet + playback + pitch */
.exercise-stage-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Controls disclosure */
.exercise-controls-disclosure {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-input);
  overflow: hidden;
}

.exercise-controls-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 12px;
  color: var(--text-secondary);
  user-select: none;
}

.exercise-controls-summary::-webkit-details-marker { display: none; }
.exercise-controls-summary::marker { content: ''; }

.exercise-controls-summary-left {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--text-primary);
}

.exercise-controls-summary-info {
  font-family: monospace;
  font-size: 11px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.exercise-controls-disclosure[open] > .exercise-controls-summary {
  border-bottom: 1px solid var(--border);
}

.exercise-controls-disclosure[open] .exercise-controls-row {
  animation: disclosure-expand 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes disclosure-expand {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Strip background from inner controls row when inside the disclosure */
.exercise-controls-disclosure .exercise-controls-row {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 12px 14px 14px;
}

/* Secondary toggles inside the Adjust disclosure (Repeat, Record mode). */
.exercise-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding: 4px 14px 14px;
  border-top: 1px solid var(--border);
  margin-top: 2px;
}

.exercise-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

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

.exercise-toggle-track {
  position: relative;
  display: inline-block;
  width: 32px;
  height: 18px;
  border-radius: 999px;
  background: var(--border);
  transition: background-color 180ms;
  flex-shrink: 0;
}

.exercise-toggle-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-secondary);
  transition: transform 200ms cubic-bezier(0.16, 1, 0.3, 1), background-color 180ms;
}

.exercise-toggle input:checked + .exercise-toggle-track {
  background: var(--accent);
}

.exercise-toggle input:checked + .exercise-toggle-track::after {
  transform: translateX(14px);
  background: #fff;
}

.exercise-toggle input:focus-visible + .exercise-toggle-track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.exercise-toggle-label { color: var(--text-primary); }

/* ---- Theory audio-visual ---- */
.theory-audio-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 150ms;
}

.theory-audio-btn:hover {
  background: var(--accent);
  color: #fff;
}

.theory-diagram {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 12px 0;
}

/* Intervals row: degrees with W/H tags between */
.theory-intervals {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.diag-degree {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: monospace;
  font-weight: 600;
  font-size: 13px;
}

.diag-step {
  font-family: monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: 4px;
}

.diag-step.diag-whole { background: var(--accent-glow); color: var(--accent); }
.diag-step.diag-half { background: rgba(232, 167, 53, 0.18); color: var(--warning); }

/* Keyboard diagram */
.theory-keyboard {
  position: relative;
  height: 90px;
  padding: 0;
  overflow: hidden;
}
.diag-keys-white {
  display: flex;
  height: 100%;
  width: 100%;
}
.diag-key {
  flex: 1;
  height: 100%;
  border-right: 1px solid var(--border);
  background: var(--bg-card);
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 4px;
}
.diag-key:last-child { border-right: none; }
.diag-key.hl {
  background: var(--accent-glow);
  box-shadow: inset 0 -3px 0 var(--accent);
}
.diag-c-label {
  font-family: monospace;
  font-size: 9px;
  color: var(--text-muted);
}
.diag-keys-black {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.diag-key.diag-black {
  position: absolute;
  width: 6%;
  height: 60%;
  top: 0;
  background: #1a1a1a;
  border: 1px solid #000;
  border-radius: 0 0 3px 3px;
}
.diag-key.diag-black.hl {
  background: var(--accent);
  border-color: var(--accent-hover);
}

/* Progression chords */
.theory-progression {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.diag-chord {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 6px 10px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 8px;
  font-family: monospace;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--accent);
}
.diag-arrow {
  color: var(--text-muted);
  font-size: 14px;
}

/* Stack diagram (for triads/tetrads) */
.theory-stack {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 220px;
}
.diag-stack-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  background: var(--bg-card);
  border-radius: 6px;
}
.diag-stack-degree {
  font-family: monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  min-width: 24px;
}
.diag-stack-note {
  font-family: monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

/* References block */
.theory-refs {
  margin-top: 14px;
  padding: 10px 14px;
  background: var(--bg-input);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
}
.theory-refs-title {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.theory-refs ul {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-primary);
  line-height: 1.5;
}

/* New playback group: play + record side by side, centered */
.exercise-playback {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  padding: 6px 0 2px;
}

/* Playback progress bar under the sheet music */
.exercise-playback-progress {
  position: relative;
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: -8px;
}

.exercise-playback-progress[hidden] { display: none; }

.exercise-playback-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong, var(--accent)));
  border-radius: 2px;
  transition: width 80ms linear;
}

/* Inline pitch detection — compact chips above playback */
.exercise-pitch-inline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  position: relative;
}

.exercise-pitch-inline[hidden] { display: none; }

.exercise-pitch-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.exercise-pitch-chip strong {
  font-family: monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.exercise-pitch-chip-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.exercise-pitch-chip-you strong { color: var(--accent); }

.exercise-pitch-status {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
  font-style: italic;
}

.exercise-pitch-status.matched {
  color: var(--accent);
  font-style: normal;
  font-weight: 600;
}

.exercise-pitch-progress {
  position: absolute;
  bottom: 0; left: 0;
  height: 2px;
  width: 100%;
  background: transparent;
}

.exercise-pitch-progress > div {
  height: 100%;
  background: var(--accent);
  width: 0;
  transition: width 120ms linear;
  border-radius: 0 2px 2px 0;
}

/* Play button: animated on playing */
.exercise-play-btn.is-playing {
  animation: play-btn-pulse 1s ease-in-out infinite;
}

@keyframes play-btn-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow), 0 4px 14px rgba(56, 191, 136, 0.35); }
  50%      { box-shadow: 0 0 0 12px transparent,    0 4px 14px rgba(56, 191, 136, 0.5); }
}

/* Footer: single unified primary CTA */
.exercise-foot {
  display: flex;
  justify-content: stretch;
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.exercise-next-btn {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 14px 22px;
  font-size: 15px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background-color 160ms, transform 100ms, box-shadow 200ms;
  box-shadow: 0 6px 18px -8px rgba(56, 191, 136, 0.55);
}

.exercise-next-btn:hover {
  background: var(--accent-strong, var(--accent));
  filter: brightness(1.08);
  box-shadow: 0 10px 22px -8px rgba(56, 191, 136, 0.7);
}

.exercise-next-btn:active { transform: scale(0.98); }

.exercise-next-btn.is-completing {
  animation: cta-success 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cta-success {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.04); box-shadow: 0 10px 26px -8px rgba(56, 191, 136, 0.7); }
  100% { transform: scale(1); }
}

/* ---- Module-complete celebration ---- */
.module-complete-flash {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  animation: flash-bg 240ms ease-out;
}

.module-complete-flash.hidden { display: none; }

@keyframes flash-bg {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.module-complete-card {
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 16px;
  padding: 36px 36px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  max-width: 420px;
  text-align: center;
  position: relative;
  overflow: hidden;
  animation: complete-card-in 460ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes complete-card-in {
  0%   { opacity: 0; transform: translateY(20px) scale(0.92); }
  60%  { transform: translateY(-4px) scale(1.02); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

.module-complete-check {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  animation: complete-check-pop 720ms cubic-bezier(0.16, 1, 0.3, 1) 80ms backwards;
}

@keyframes complete-check-pop {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.18); opacity: 1; }
  100% { transform: scale(1); }
}

.module-complete-title {
  margin: 6px 0 0;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.module-complete-sub {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Confetti — small absolutely-positioned dots */
.confetti-shower {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  top: -10px;
  width: 8px;
  height: 12px;
  border-radius: 2px;
  opacity: 0;
  animation: confetti-fall 1600ms cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes confetti-fall {
  0%   { opacity: 1; transform: translateY(0) translateX(0) rotate(0deg); }
  100% { opacity: 0; transform: translateY(420px) translateX(var(--drift, 0)) rotate(540deg); }
}

@media (max-width: 900px) {
  .exercise-stage { padding: 0; }
  .exercise-shell {
    border-radius: 0;
    border: none;
    padding: 10px 16px 14px;
    max-height: 100vh;
    min-height: 100vh;
    gap: 14px;
  }
  .exercise-shell .exercise-title { font-size: 22px; }
  .exercise-shell .exercise-desc { font-size: 14px; line-height: 1.5; }
  .exercise-head { padding: 0; }
  .exercise-module-name { font-size: 12px; }
  .exercise-tag-chip { font-size: 8px; }
  .exercise-controls-row {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 12px;
  }
  .exercise-control {
    min-width: 0;
    flex: 1 1 calc(50% - 4px);
    gap: 4px;
  }
  .exercise-control-label {
    font-size: 9px;
  }
  .exercise-stepper {
    gap: 6px;
    padding: 2px 6px;
    border-radius: 6px;
    width: auto;
  }
  .exercise-stepper > span { font-size: 13px; min-width: 22px; }
  .exercise-step-btn { width: 22px; height: 22px; font-size: 14px; }
  .exercise-pill {
    padding: 3px 8px;
    font-size: 10px;
  }
  .exercise-clef-row {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -2px;
    padding: 0 2px;
  }
  .exercise-clef-row .exercise-pill { flex: 0 0 auto; white-space: nowrap; }
  /* Tempo gets the full row to itself */
  .exercise-control:last-child {
    flex-basis: 100%;
  }

  .exercise-sheet { min-height: 160px; max-height: 36vh; padding: 10px 8px; }

  .exercise-playback {
    gap: 14px;
    padding: 4px 0 0;
  }
  .exercise-play-btn { width: 60px; height: 60px; }
  .exercise-play-btn svg { width: 28px; height: 28px; }
  .exercise-record-btn {
    padding: 7px 12px;
    font-size: 12px;
    gap: 6px;
  }
  .exercise-record-dot { width: 8px; height: 8px; }

  .exercise-foot {
    padding-top: 10px;
    margin-top: 4px;
  }
  .exercise-next-btn {
    padding: 13px 16px;
    font-size: 14px;
    min-height: 46px;
    border-radius: 10px;
  }

  .exercise-pitch-inline {
    padding: 8px 10px;
    font-size: 12px;
    gap: 6px;
  }
  .exercise-pitch-chip strong { font-size: 13px; }
  .exercise-pitch-chip-label { font-size: 9px; }
  .exercise-pitch-status { font-size: 10px; }

  .module-complete-card {
    padding: 28px 24px 24px;
    border-radius: 14px;
    max-width: calc(100vw - 32px);
  }
  .module-complete-check { width: 64px; height: 64px; }
  .module-complete-title { font-size: 20px; }
}

/* ---- Group heading inside cards grid ---- */
.learn-group-heading {
  grid-column: 1 / -1;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 8px 0 0;
}

/* ---- Card per-module progress bar ---- */
.learn-card-progress {
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 8px;
}

.learn-card-progress > div {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 220ms ease;
}

/* ---- Module map ---- */
.learn-map-card {
  max-width: 920px;
  width: 100%;
  position: relative;
  padding: 26px 28px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}

.learn-map-card h2 {
  margin: 0 0 6px;
  font-size: 22px;
  color: var(--text-primary);
  text-transform: none;
  letter-spacing: 0;
}

.learn-map-body {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.learn-map-group h3 {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.learn-map-lane {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.learn-map-node {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 180px;
  flex: 1 1 200px;
  cursor: pointer;
  text-align: left;
  transition: border-color 150ms, transform 150ms;
  font-family: inherit;
  color: var(--text-primary);
}

.learn-map-node:hover { border-color: var(--accent); transform: translateY(-1px); }
.learn-map-node.partial { border-color: var(--accent); }
.learn-map-node.done {
  background: var(--accent-glow);
  border-color: var(--accent);
}

.learn-map-node-title { font-size: 13px; font-weight: 600; }
.learn-map-node-meta { font-family: monospace; font-size: 11px; color: var(--text-secondary); }
.learn-map-node-bar {
  display: block;
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 2px;
  overflow: hidden;
}
.learn-map-node-bar > span {
  display: block;
  height: 100%;
  background: var(--accent);
  width: 0%;
}

.overlay-close-x {
  position: absolute;
  top: 12px;
  right: 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 6px;
  z-index: 1;
  transition: color 150ms, background-color 150ms;
}

.overlay-close-x:hover { color: var(--text-primary); background: var(--bg-elevated); }

/* ---- v1 Exercise modal (legacy) ---- */
.exercise-overlay {
  align-items: flex-start;
  padding: 32px 16px;
  overflow-y: auto;
}

.exercise-card {
  max-width: 520px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 26px;
}

.exercise-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.exercise-progress {
  font-family: monospace;
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.exercise-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  padding: 0 6px;
}

.exercise-close:hover { color: var(--text-primary); }

.exercise-card .exercise-title {
  margin: 0;
  font-size: 22px;
  color: var(--text-primary);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 600;
}

.exercise-desc {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-secondary);
}

.exercise-sheet {
  background: #fff;
  border-radius: 10px;
  padding: 14px 12px;
  margin-bottom: 4px;
  min-height: 200px;
  max-height: 50vh;
  overflow: auto;
  flex: 1 1 auto;
  position: relative;
}

.exercise-sheet.exercise-sheet-loading {
  opacity: 0.5;
}

.exercise-sheet svg {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
}

/* OSMD cursor: tint it with the accent colour so it reads as "your target".
   OSMD renders the cursor as an <img> overlay positioned absolutely. We use
   filters because OSMD doesn't expose easy hooks for cursor colour. */
.exercise-sheet img[id^="cursorImg"] {
  filter: hue-rotate(180deg) saturate(2.4) brightness(0.95);
  opacity: 0.4;
  transition: opacity 160ms, filter 200ms;
}

.exercise-sheet img[id^="cursorImg"].cursor-match {
  opacity: 0.85;
  filter: hue-rotate(180deg) saturate(3.2) brightness(1.1);
}

/* status colour variants used by JS */
.exercise-pitch-status.match { color: var(--accent); }
.exercise-pitch-status.miss  { color: var(--warning); }

.exercise-play-btn {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: background-color 150ms, transform 150ms, box-shadow 200ms;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(56, 191, 136, 0.35);
}

.exercise-play-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.06);
  box-shadow: 0 8px 22px rgba(56, 191, 136, 0.5);
}

.exercise-play-btn:active { transform: scale(0.96); }

.exercise-play-btn .exercise-stop-icon,
.exercise-play-btn.is-playing .exercise-play-icon { display: none; }
.exercise-play-btn.is-playing .exercise-stop-icon { display: block; }

/* REC badge — only visible when record mode is on */
.exercise-play-rec-badge {
  position: absolute;
  top: 2px;
  right: -4px;
  background: var(--danger);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 2px 6px;
  border-radius: 999px;
  border: 2px solid var(--bg-card);
  opacity: 0;
  transform: scale(0.7);
  transition: opacity 160ms, transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

.exercise-play-btn.record-mode-on .exercise-play-rec-badge {
  opacity: 1;
  transform: scale(1);
}

.exercise-play-btn.record-mode-on.is-playing .exercise-play-rec-badge {
  animation: rec-badge-pulse 900ms ease-in-out infinite;
}

@keyframes rec-badge-pulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

.exercise-record-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  transition: border-color 150ms, color 150ms, background-color 150ms;
}

.exercise-record-btn:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.exercise-record-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--danger);
}

.exercise-record-btn.recording {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.exercise-record-btn.recording .exercise-record-dot {
  background: #fff;
  animation: rec-pulse 1s ease-in-out infinite;
}

@keyframes rec-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

#exercise-recording {
  width: 100%;
  margin-top: 4px;
}

.learn-card {
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  border-radius: 12px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  transition: border-color 150ms, transform 150ms;
}

.learn-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.learn-card.completed {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.learn-card-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.learn-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.learn-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
  margin: 0;
  flex: 1;
}

.learn-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.learn-card-status {
  font-size: 11px;
  color: var(--text-muted);
}

.learn-card-status.done { color: var(--accent); }

.learn-card-cta {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.learn-card-cta:hover {
  background: var(--accent);
  color: #fff;
}

/* ---- Hero ---- */

#hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  min-height: 48px;
}

.hero-title-group {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

#hero h1 {
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--accent);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.unsaved-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
  box-shadow: 0 0 0 2px rgba(232, 167, 53, 0.18);
  animation: unsaved-pulse 2.4s ease-in-out infinite;
}

.unsaved-dot[hidden] { display: none; }

@keyframes unsaved-pulse {
  0%, 100% { opacity: 0.85; }
  50% { opacity: 0.45; }
}

#hero .tagline {
  font-size: 13px;
  opacity: 0.5;
}

/* ---- Piano ---- */

#piano-scroll {
  width: 100%;
  overflow-x: auto;
}

#piano {
  position: relative;
  display: flex;
  justify-content: flex-start;
  touch-action: none;
  user-select: none;
  flex-shrink: 0;
}

.key-group {
  display: flex;
}

.key-group.black-keys {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.key {
  box-sizing: border-box;
  width: 36px;
  height: 160px;
  margin: 5px 0;
  background-color: var(--key-white);
  border: 1px solid var(--key-black);
  border-radius: 0 0 5px 5px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  pointer-events: auto;
  transition: transform 40ms ease-out, background-color 40ms ease-out;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 8px;
}

.keyhint {
  font-size: 10px;
  font-family: monospace;
  color: var(--text-muted);
  pointer-events: none;
}

.key.black .keyhint {
  color: var(--text-secondary);
  padding-bottom: 0;
}

.key.black {
  position: absolute;
  width: 22px;
  height: 105px;
  margin: 5px 0;
  background-color: var(--key-black);
  border-radius: 0 0 4px 4px;
  z-index: 1;
}

.key.glow {
  background-color: #fff7c2;
}

.key.glow.glow-chord {
  background-color: #c2f5e2;
}

.key.glow.glow-bass {
  background-color: #c2d8f5;
}

.key.glow.glow-melody2 {
  background-color: #e0c2f5;
}

.key.black.glow {
  background-color: #6a5818;
}

.key.black.glow.glow-chord {
  background-color: #1a5c3a;
}

.key.black.glow.glow-bass {
  background-color: #1a3a5c;
}

.key.black.glow.glow-melody2 {
  background-color: #4a1a5c;
}

.key.playing {
  background-color: #ffd54a;
  transform: translateY(2px);
}

.key.black.playing {
  background-color: #b8860b;
}

/* ---- Common ---- */

.hint {
  font-size: 13px;
  opacity: 0.5;
  margin: 0;
  text-align: center;
}

kbd {
  display: inline-block;
  padding: 1px 5px;
  font-family: monospace;
  font-size: 11px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-hover);
  border-radius: 4px;
  color: var(--text-primary);
}

/* ---- DAW Layout ---- */

#daw-main {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

#score-section {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

#score-canvas {
  width: 100%;
  height: 45vh;
  min-height: 200px;
  display: block;
  border-radius: 8px;
  touch-action: none;
}

/* ---- Tab system ---- */

#tab-panels {
}

#tab-bar {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  flex-shrink: 0;
}

#tab-bar [role="tab"] {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 150ms, border-color 150ms;
  font-family: inherit;
}

#tab-bar [role="tab"]:hover {
  color: var(--text-primary);
}

#tab-bar [role="tab"][aria-selected="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

#piano-toggle {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 150ms, border-color 150ms, background-color 150ms;
  font-family: inherit;
  align-self: center;
}

#piano-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

#piano-toggle[aria-expanded="true"] {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
}

.tab-panel {
  padding: 12px 16px;
  overflow-y: auto;
  flex: 1;
}

.tab-panel > section {
  margin: 0;
  padding: 0;
}

.tab-panel.hidden {
  display: none;
}

/* ---- Piano drawer ---- */

#piano-drawer {
  overflow: hidden;
  max-height: 220px;
  transition: max-height 300ms ease;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  padding: 8px 12px;
}

#piano-drawer.collapsed {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-top: none;
}

.piano-hint {
  margin-top: 6px;
}

/* ---- Transport bar ---- */

#transport-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.transport-left {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.transport-center {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.transport-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.transport-right label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.transport-more-btn {
  display: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
}

.transport-pills {
  display: none;
  gap: 6px;
  align-items: center;
  flex-shrink: 0;
}

.transport-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px 10px;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 150ms, background-color 150ms;
}

.transport-pill:hover {
  border-color: var(--accent);
}

.transport-pill-unit {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.transport-dropdown {
  display: none;
}

.transport-dropdown.visible {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: absolute;
  bottom: 100%;
  right: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.3);
  z-index: 100;
  min-width: 200px;
}

.transport-dropdown-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.transport-dropdown-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  min-width: 36px;
}

.transport-dropdown-row input[type="range"] {
  flex: 1;
}

.transport-dropdown-row select {
  flex: 1;
}

.transport-dropdown-row span {
  font-size: 14px;
  font-weight: 600;
  min-width: 30px;
  text-align: right;
}

/* ---- Generator inside tab ---- */

#generator {
  max-width: none;
  width: 100%;
}

#generator h2 {
  margin: 0 0 10px 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.gen-section {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.gen-section:first-child {
  padding-top: 0;
}

.gen-section:last-child {
  border-bottom: none;
  padding-bottom: 4px;
}

.gen-section-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 0 0 10px 0;
  line-height: 1;
}

.gen-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.gen-section-header .gen-section-title {
  margin: 0;
}

.gen-section-presets .gen-row:last-child {
  margin-bottom: 0;
}

.gen-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.gen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}

.gen-grid + .gen-sliders {
  margin-top: 12px;
}

.gen-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.gen-field label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.gen-field select {
  width: 100%;
}

.gen-field-transpose .transpose-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.gen-sliders {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.gen-slider {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 180px;
}

.gen-slider label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  white-space: nowrap;
  min-width: 56px;
}

.gen-slider input[type="range"] {
  flex: 1;
  min-width: 60px;
}

/* Duet section toggling */
.gen-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  user-select: none;
}

.gen-toggle input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
  width: 16px;
  height: 16px;
}

.gen-section-duet .duet-controls {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 240ms ease, opacity 200ms ease;
}

.duet-enabled .gen-section-duet .duet-controls {
  max-height: 400px;
  opacity: 1;
}

.gen-section-duet .duet-controls .gen-grid {
  margin-bottom: 12px;
}

/* Action section */
.gen-section-actions {
  padding-top: 16px;
}

.gen-actions-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.gen-actions-row + .gen-actions-row {
  margin-top: 10px;
}

.gen-seed-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  padding: 4px 10px 4px 12px;
}

.gen-seed-group label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.gen-seed-group #seed {
  border: none;
  background: transparent;
  padding: 4px 0;
  width: 130px;
  font-family: monospace;
}

.gen-seed-group #seed:focus {
  outline: none;
  box-shadow: none;
}

.gen-seed-group:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.gen-actions-save {
  border-top: 1px dashed var(--border);
  padding-top: 10px;
}

.gen-actions-save #song-name {
  flex: 1;
  min-width: 160px;
}

/* ---- Mixer header ---- */

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 12px;
  min-height: 24px;
  height: 24px;
}

.panel-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  line-height: 1;
}

.panel-title-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-badge {
  font-size: 10px;
  font-weight: normal;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text-secondary);
  opacity: 0.5;
}

/* ---- Score ---- */

.score-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  min-height: 36px;
}

.score-toolbar-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
  line-height: 1.3;
}

.score-toolbar-info .song-info-seed {
  font-family: monospace;
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.score-toolbar-info .song-info-meta {
  font-family: monospace;
  font-size: 11px;
  color: var(--text-secondary);
  opacity: 0.7;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.score-toolbar-info.flash {
  opacity: 1;
}

.score-toolbar-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.score-icon-btn {
  background: var(--bg-card);
  color: var(--accent);
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 150ms, border-color 150ms, color 150ms, transform 150ms;
  padding: 0;
}

.score-icon-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-1px);
}

.score-icon-btn:active {
  transform: translateY(0);
}

.score-icon-btn.flash {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  animation: icon-flash 350ms ease-out;
}

#score-randomize-btn.flash svg {
  animation: icon-spin 500ms ease-out;
}

@keyframes icon-flash {
  0% { transform: scale(1); }
  50% { transform: scale(1.12); }
  100% { transform: scale(1); }
}

@keyframes icon-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.score-canvas-wrap {
  position: relative;
}

.score-float-left,
.score-float-right {
  position: absolute;
  bottom: 8px;
  z-index: 10;
  display: flex;
  gap: 4px;
  opacity: 0.7;
  transition: opacity 200ms;
}

.score-float-left:hover,
.score-float-right:hover {
  opacity: 1;
}

.score-float-left {
  left: 52px;
}

.score-float-right {
  right: 8px;
  opacity: 0.85;
}

#lock-controls {
  display: none;
}

.score-canvas-wrap.has-locked-bars #lock-controls {
  display: flex;
}

.score-float-btn {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-hover);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color 150ms, color 150ms;
}

.score-float-btn:hover {
  background: var(--accent);
  color: #fff;
}

/* ---- Sheet music (OSMD) ---- */

#osmd-container {
  width: 100%;
  max-height: 55vh;
  min-height: 200px;
  overflow-y: auto;
  border-radius: 8px;
  background: #fff;
  padding: 8px;
}

#osmd-container svg {
  width: 100% !important;
}

/* ---- Score view toggle ---- */

.score-view-toggle {
  display: inline-flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 10px;
}

.score-view-btn {
  font-size: 11px;
  padding: 3px 12px;
  border: none;
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background-color 150ms, color 150ms;
}

.score-view-btn:not(:last-child) {
  border-right: 1px solid var(--border);
}

.score-view-btn:hover {
  color: var(--text-primary);
}

.score-view-btn.active {
  background: var(--accent);
  color: #fff;
}

.score-bar-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-top: 8px;
  flex-shrink: 0;
  min-width: 0;
}

.score-bar-actions > * {
  width: auto;
}

/* ---- Track toggle buttons ---- */

.score-track-toggles {
  display: flex;
  gap: 6px;
}

.track-toggle {
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 150ms, color 150ms, border-color 150ms, opacity 150ms;
  position: relative;
  padding-left: 20px;
}

.track-toggle::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  opacity: 0.3;
}

.track-toggle.active {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.track-toggle.active::before {
  opacity: 1;
}

.track-toggle[data-track="melody"]::before {
  background: var(--melody-color);
}

.track-toggle[data-track="chord"]::before {
  background: var(--chord-color);
}

.track-toggle[data-track="bass"]::before {
  background: var(--bass-color);
}

.track-toggle[data-track="melody2"]::before {
  background: var(--melody2-color);
}

/* ---- Duet visibility ---- */

.duet-only {
  display: none !important;
}

.duet-enabled .duet-only {
  display: flex !important;
}

.duet-enabled .duet-only.export-track-check {
  display: flex !important;
}

.duet-enabled .duet-only.mixer-channel {
  display: flex !important;
}

.track-toggle:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.score-hint {
  margin-top: 6px;
  font-size: 11px;
  opacity: 0.35;
}

/* ---- Player ---- */

.player-transport {
  display: flex;
  align-items: center;
  gap: 10px;
}


#play-pause,
#stop-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color 150ms, transform 150ms, box-shadow 150ms;
}

#stop-btn {
  background: var(--bg-elevated);
}

#play-pause:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--accent-shadow);
}

#play-pause.loading {
  pointer-events: none;
  position: relative;
  color: transparent;
}

#play-pause.loading::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#stop-btn:hover {
  background: var(--border-hover);
  transform: translateY(-1px);
}

.progress-wrap {
  flex: 1;
  min-width: 0;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 100ms linear;
}

.time-display {
  font-family: monospace;
  font-size: 12px;
  opacity: 0.5;
  white-space: nowrap;
  min-width: 90px;
  text-align: right;
}

/* ---- Rows ---- */

.metronome-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.metronome-row label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

/* ---- Inputs & Selects ---- */

select,
input[type="number"],
input[type="text"] {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  font-family: inherit;
  transition: border-color 150ms, box-shadow 150ms;
}

select:focus,
input[type="number"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

#seed {
  width: 120px;
  font-family: monospace;
}

#density, #swing, #velocity {
  width: 120px;
  accent-color: var(--accent);
}

#bpm {
  flex: 1;
  min-width: 80px;
  max-width: 160px;
  accent-color: var(--accent);
}

#bpm-display, #density-display, #swing-display, #velocity-display {
  font-family: monospace;
  font-size: 13px;
  min-width: 30px;
  text-align: right;
  color: var(--text-secondary);
}

/* ---- Record button ---- */

#record-btn {
  background: var(--bg-elevated);
  color: var(--text-muted);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color 150ms, transform 150ms, color 150ms;
}

#record-btn:hover {
  background: var(--border-hover);
  color: var(--danger);
  transform: translateY(-1px);
}

#record-btn.recording {
  background: var(--danger);
  color: #fff;
  animation: pulse-rec 1s ease-in-out infinite;
}

@keyframes pulse-rec {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ---- Transport click button ---- */

.transport-btn {
  background: var(--bg-elevated);
  color: var(--text-muted);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0.4;
  transition: opacity 150ms, background-color 150ms, color 150ms;
}

.transport-btn[data-mode="1"] {
  opacity: 0.8;
  color: var(--accent);
}

.transport-btn[data-mode="2"] {
  opacity: 1;
  color: var(--accent);
  background: var(--accent-glow);
}

/* ---- Transpose ---- */

.transpose-btn {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 150ms, background-color 150ms;
}

.transpose-btn:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

#transpose-display {
  font-family: monospace;
  font-size: 13px;
  min-width: 30px;
  text-align: center;
  color: var(--text-secondary);
}

/* ---- Buttons ---- */

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background-color 150ms, transform 150ms, box-shadow 150ms;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--accent-shadow);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: default;
  transform: none;
  box-shadow: none;
}

#generate-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: transform 100ms ease-out, background-color 150ms, box-shadow 150ms;
}

#generate-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--accent-shadow);
}

#generate-btn.flash {
  transform: scale(1.06);
  background: #5cb85c;
}

/* #song-info now lives inside .score-toolbar; styles defined there */

/* ---- Presets ---- */

.preset-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.preset-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-hover);
  padding: 4px 12px;
  border-radius: 14px;
  cursor: pointer;
  font-size: 12px;
  transition: border-color 120ms, color 120ms, background-color 120ms, transform 120ms;
}

.preset-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

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

.export-track-selector {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.export-track-check {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-secondary);
}

.export-track-check input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

.export-all-btn {
  font-size: 12px;
  padding: 3px 14px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  margin-left: 4px;
}

.export-all-btn:hover {
  background: var(--accent);
  color: #fff;
}

/* ---- Share ---- */

#share-btn,
#share-image-btn {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: background-color 150ms, color 150ms, transform 150ms;
}

#share-btn:hover,
#share-image-btn:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}

#share-btn.copied,
#share-image-btn.copied {
  background: var(--accent);
  color: #fff;
}

/* ---- Export ---- */

#export-midi,
#export-wav,
#export-musicxml,
#export-preview {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background-color 150ms, transform 150ms, box-shadow 150ms;
}

#export-midi:hover,
#export-wav:hover,
#export-musicxml:hover,
#export-preview:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--accent-shadow);
}

#export-midi:disabled,
#export-wav:disabled,
#export-musicxml:disabled,
#export-preview:disabled {
  opacity: 0.5;
  cursor: default;
  transform: none;
  box-shadow: none;
}

#export-status {
  font-family: monospace;
  font-size: 12px;
  opacity: 0.5;
}

#clear-export-log {
  background: transparent;
  color: var(--danger);
  border: none;
  cursor: pointer;
  font-size: 12px;
  opacity: 0.7;
  transition: opacity 150ms;
}

#clear-export-log:hover {
  opacity: 1;
}

#export-log-empty {
  margin: 0;
}

.export-log-item {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-secondary);
}

.export-log-item .export-log-seed {
  color: var(--text-primary);
  font-weight: 500;
}

.export-log-item .export-log-type {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-elevated);
}

/* ---- Beat indicator ---- */

.beat-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border);
  display: inline-block;
  transition: background-color 60ms ease-out;
}

.beat-indicator.tick {
  background: #ffd54a;
}

.beat-indicator.tick.accent {
  background: #ff7043;
}

/* ---- Save section ---- */

#song-name {
  flex: 1;
  min-width: 0;
}

#song-name::placeholder {
  color: var(--text-muted);
  font-style: italic;
}

#save-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background-color 150ms, transform 150ms, box-shadow 150ms;
}

#save-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--accent-shadow);
}

#save-hint {
  font-size: 12px;
}

#save-hint.unsaved {
  color: var(--warning);
  opacity: 1;
}

/* ---- Empty state ---- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 36px 20px;
  text-align: center;
  color: var(--text-secondary);
  gap: 4px;
}

.empty-state-icon {
  color: var(--text-muted);
  margin-bottom: 8px;
  opacity: 0.65;
}

.empty-state-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.empty-state-text {
  font-size: 13px;
  margin: 0 0 12px 0;
  max-width: 280px;
  line-height: 1.5;
}

.empty-state-cta {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  transition: background-color 150ms, transform 150ms;
}

.empty-state-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* ---- History ---- */


#clear-history {
  background: transparent;
  color: var(--danger);
  border: none;
  cursor: pointer;
  font-size: 12px;
  opacity: 0.7;
  transition: opacity 150ms;
}

#clear-history:hover {
  opacity: 1;
}


#history-empty {
  margin: 0;
}

.history-item {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: border-color 150ms;
}

.history-item:hover {
  border-color: var(--border-hover);
}

.history-item-info {
  flex: 1;
  min-width: 0;
}

.history-item-name {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

.history-item-meta {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 3px;
  font-family: monospace;
}

.history-item-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.history-item-actions button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  transition: color 150ms;
}

.history-item-actions button:hover {
  color: var(--text-primary);
}

.history-rename-input {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 14px;
  width: 100%;
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ---- Hero icon buttons ---- */

#theme-toggle,
#tour-btn,
#shortcuts-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 150ms, border-color 150ms, color 150ms;
  line-height: 1;
  font-weight: 600;
}

#theme-toggle { font-size: 15px; }

#theme-toggle:hover,
#shortcuts-btn:hover,
#tour-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ---- Mixer ---- */

.mixer-inline-select {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-secondary);
}

.mixer-subtabs {
  display: none;
  gap: 4px;
  margin-bottom: 8px;
  padding: 4px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.mixer-subtab {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 150ms, color 150ms;
}

.mixer-subtab.active {
  background: var(--accent);
  color: #fff;
}

.mixer-console {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 4px;
  overflow-x: auto;
  gap: 0;
}

.mixer-group {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.mixer-channel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 4px 6px;
  min-width: 50px;
}

.mixer-ch-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  white-space: nowrap;
}

.mixer-pan-wrap {
  display: flex;
  align-items: center;
  gap: 2px;
  justify-content: center;
  margin-bottom: 4px;
}

.mixer-pan-label {
  font-size: 7px;
  color: var(--text-muted);
  font-weight: 600;
  opacity: 0.6;
}

.mixer-pan {
  -webkit-appearance: none;
  appearance: none;
  width: 40px;
  height: 14px;
  background: transparent;
  cursor: pointer;
}

.mixer-pan::-webkit-slider-runnable-track {
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
}

.mixer-pan::-moz-range-track {
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
}

.mixer-pan::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  margin-top: -4px;
}

.mixer-pan::-moz-range-thumb {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  border: none;
  cursor: pointer;
}

.mixer-fader-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 130px;
  width: 32px;
  position: relative;
  overflow: visible;
}

.mixer-fader {
  -webkit-appearance: none;
  appearance: none;
  width: 130px;
  height: 32px;
  background: transparent;
  cursor: grab;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-90deg);
}

.mixer-fader::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
}

.mixer-fader::-moz-range-track {
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
}

.mixer-fader::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 10px;
  background: linear-gradient(90deg, #d4d4d4 0%, #a0a0a0 40%, #888 50%, #a0a0a0 60%, #d4d4d4 100%);
  border-radius: 2px;
  border: 1px solid rgba(0,0,0,0.25);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  cursor: grab;
  margin-top: -3px;
}

.mixer-fader::-moz-range-thumb {
  width: 22px;
  height: 10px;
  background: linear-gradient(90deg, #d4d4d4 0%, #a0a0a0 40%, #888 50%, #a0a0a0 60%, #d4d4d4 100%);
  border-radius: 2px;
  border: 1px solid rgba(0,0,0,0.25);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  cursor: grab;
}

.mixer-fader:active {
  cursor: grabbing;
}

.mixer-fader:active::-webkit-slider-thumb { cursor: grabbing; }
.mixer-fader:active::-moz-range-thumb { cursor: grabbing; }

.mixer-val {
  font-size: 10px;
  font-family: monospace;
  color: var(--text-muted);
  min-width: 32px;
  text-align: center;
}

.mixer-btn-row {
  display: flex;
  gap: 3px;
  justify-content: center;
}

.mixer-mute,
.mixer-solo {
  background: transparent;
  border: 1px solid var(--border-hover);
  color: var(--text-muted);
  width: 22px;
  height: 18px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 9px;
  font-weight: 700;
  font-family: inherit;
  transition: all 150ms;
  padding: 0;
}

.mixer-mute:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.mixer-mute.muted {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.mixer-solo:hover {
  border-color: #e8b528;
  color: #e8b528;
}

.mixer-solo.soloed {
  background: #e8b528;
  border-color: #e8b528;
  color: #111;
}

.mixer-divider {
  width: 1px;
  background: var(--border-hover);
  margin: 0 6px;
  flex-shrink: 0;
  align-self: stretch;
}

.mixer-master-ch {
  min-width: 56px;
}

.mixer-master-ch .mixer-ch-label {
  color: var(--accent);
}

/* Mixer EQ */

.mixer-group-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 2px;
}

/* ---- Gallery ---- */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}

.gallery-card {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  cursor: pointer;
  transition: border-color 150ms, transform 150ms;
}

.gallery-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.gallery-card-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.gallery-card-meta {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: monospace;
}

/* ---- Tooltips ---- */

[data-tip] {
  position: relative;
}

[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: normal;
  letter-spacing: normal;
  text-transform: none;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 150ms;
  z-index: 50;
}

[data-tip]:hover::after {
  opacity: 1;
}

/* ---- Overlay ---- */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  transition: opacity 150ms;
}

.overlay.hidden {
  display: none;
}

.overlay-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 28px;
  max-width: 420px;
  width: 90%;
}

.overlay-card h2 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  align-items: center;
  margin-bottom: 20px;
}

.shortcuts-grid span {
  font-size: 13px;
  color: var(--text-secondary);
}

.overlay-card > button:not(.overlay-close-x) {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  width: 100%;
  transition: background-color 150ms;
}

.overlay-card > button:not(.overlay-close-x):hover {
  background: var(--accent-hover);
}

/* ---- Onboarding ---- */

.onboarding-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 200;
  transition: opacity 200ms;
}

.onboarding-spotlight {
  z-index: 201;
  box-shadow: 0 0 0 4px var(--accent), 0 0 20px 4px var(--accent-shadow);
  border-radius: 12px;
  transition: box-shadow 300ms;
}

.onboarding-card {
  position: absolute;
  z-index: 202;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 18px 22px;
  max-width: 380px;
  width: calc(100vw - 32px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--accent-glow);
  opacity: 0;
  transform-origin: top center;
  animation: onboarding-in 250ms ease-out forwards;
}

.onboarding-card.visible {
  opacity: 1;
}

@keyframes onboarding-in {
  from { opacity: 0; scale: 0.96; }
  to { opacity: 1; scale: 1; }
}

.onboarding-step-num {
  font-size: 11px;
  font-family: monospace;
  color: var(--accent);
  margin-bottom: 4px;
  font-weight: 600;
}

.onboarding-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.onboarding-text {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.onboarding-progress {
  display: flex;
  gap: 5px;
  justify-content: center;
  margin-bottom: 14px;
}

.onboarding-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border-hover);
  transition: background-color 200ms, transform 200ms;
}

.onboarding-dot.active {
  background: var(--accent);
  transform: scale(1.4);
}

.onboarding-dot.done {
  background: var(--accent);
  opacity: 0.4;
}

.onboarding-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.onboarding-nav {
  display: flex;
  gap: 8px;
}

.onboarding-skip {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  padding: 4px 0;
  transition: color 150ms;
}

.onboarding-skip:hover {
  color: var(--text-secondary);
}

.onboarding-prev,
.onboarding-next {
  border: none;
  padding: 7px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  transition: background-color 150ms, transform 150ms;
}

.onboarding-prev {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.onboarding-prev:hover {
  background: var(--border-hover);
}

.onboarding-next {
  background: var(--accent);
  color: #fff;
}

.onboarding-next:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.onboarding-card[data-arrow="down"]::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid var(--accent);
}

.onboarding-card[data-arrow="up"]::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid var(--accent);
}

/* ---- Accessibility ---- */

.skip-link {
  position: absolute;
  top: -40px;
  left: 16px;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  z-index: 300;
  transition: top 150ms;
  text-decoration: none;
}

.skip-link:focus {
  top: 16px;
}

/* ---- PWA install banner ---- */
.install-banner {
  position: fixed;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 6px 8px 6px 16px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25), 0 0 0 4px var(--accent-glow);
  z-index: 150;
  font-size: 13px;
  max-width: calc(100vw - 24px);
}

.install-banner[hidden] { display: none; }

.install-banner-text {
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.install-banner-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.install-banner-btn:hover {
  background: var(--accent-hover);
}

.install-banner-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 6px;
}

.install-banner-close:hover {
  color: var(--text-primary);
}

@media (max-width: 600px) {
  .install-banner {
    top: auto;
    bottom: calc(100% + 8px); /* Avoid transport bar; recalculated via JS-free CSS using top */
    bottom: 88px;
    left: 12px;
    right: 12px;
    transform: none;
    max-width: none;
  }
  .install-banner-text { font-size: 14px; }
}

/* ---- Responsive ---- */


@media (max-width: 600px) {
  html, body {
    max-width: 100vw;
    overflow-x: hidden;
    font-size: 16px;
  }

  #daw-main {
    overflow-x: hidden;
  }

  #hero .tagline {
    display: none;
  }

  #hero {
    padding: 6px 12px;
  }

  #score-section {
    padding: 8px 10px;
  }

  #score-canvas {
    height: 35vh;
    min-height: 150px;
  }

  #osmd-container {
    max-height: 40vh;
    min-height: 150px;
  }

  .score-view-btn {
    font-size: 13px;
    padding: 4px 12px;
  }

  .score-bar-actions {
    gap: 14px;
    margin-top: 14px;
    padding-bottom: 8px;
  }

  .score-track-toggles {
    gap: 8px;
    flex-wrap: wrap;
  }

  .score-view-btn {
    padding: 8px 16px;
  }

  .track-toggle {
    font-size: 13px;
    padding: 3px 10px 3px 20px;
  }

  /* Tabs */
  #tab-bar {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  #tab-bar [role="tab"] {
    padding: 8px 12px;
    font-size: 14px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .tab-panel {
    padding: 10px 12px;
    overflow-x: hidden;
  }

  .panel-header {
    flex-wrap: wrap;
    gap: 4px;
    height: auto;
    min-height: 24px;
  }

  .panel-title {
    font-size: 14px;
  }

  .panel-badge {
    font-size: 12px;
  }

  /* Generator */
  .gen-section {
    padding: 12px 0;
  }

  .gen-section-title {
    font-size: 12px;
  }

  .gen-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .gen-sliders {
    flex-direction: column;
    gap: 10px;
  }

  .gen-slider {
    min-width: 0;
  }

  .gen-row {
    gap: 6px;
  }

  .gen-field label {
    font-size: 12px;
  }

  select {
    font-size: 14px;
  }

  .gen-actions-row {
    gap: 8px;
  }

  .gen-seed-group {
    flex: 1 0 100%;
    min-width: 0;
    padding: 6px 12px;
  }

  .gen-seed-group #seed {
    width: 100%;
    flex: 1;
    min-width: 0;
    font-size: 14px;
  }

  #generate-btn {
    flex: 1 1 auto;
  }

  .gen-actions-save #song-name {
    flex: 1 1 100%;
    width: 100%;
    min-width: 0;
  }

  .gen-actions-save #save-btn {
    flex: 0 0 auto;
  }

  .preset-btn {
    padding: 4px 10px;
    font-size: 14px;
  }

  .preset-label {
    font-size: 14px;
  }

  .score-float-btn {
    font-size: 14px;
    padding: 6px 12px;
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Move lock controls to the top so they don't collide with zoom on mobile */
  .score-float-left {
    bottom: auto;
    top: 8px;
    left: 8px;
    flex-wrap: wrap;
    max-width: calc(100% - 16px);
    opacity: 1;
  }

  .score-float-right {
    opacity: 1;
  }

  /* Transport */
  #transport-bar {
    column-gap: 8px;
    row-gap: 8px;
    padding: 10px 12px 12px;
    flex-shrink: 0;
    position: relative;
    flex-wrap: wrap;
    min-height: 0;
  }

  .transport-left {
    gap: 8px;
    flex: 1;
    min-width: 0;
  }

  .transport-center {
    order: 2;
    flex: 1 0 100%;
    width: 100%;
    gap: 10px;
    min-width: 0;
  }

  #play-pause,
  #stop-btn {
    width: 48px;
    height: 48px;
    font-size: 18px;
  }

  #record-btn {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }

  .transport-btn {
    width: 40px;
    height: 40px;
  }

  .transport-right {
    display: none;
  }

  .transport-pills {
    display: flex;
  }

  .transport-more-btn {
    display: flex;
    width: 40px;
    height: 40px;
    font-size: 22px;
    flex-shrink: 0;
  }

  .progress-bar {
    height: 10px;
    border-radius: 5px;
  }

  .progress-fill {
    border-radius: 5px;
  }

  .time-display {
    font-size: 13px;
    min-width: auto;
  }

  /* Mixer */
  .mixer-subtabs {
    display: flex;
  }

  .mixer-console {
    overflow-x: hidden;
    max-width: 100%;
    flex-direction: column;
  }

  .mixer-console > .mixer-divider {
    display: none;
  }

  .mixer-console > .mixer-group {
    display: none;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 8px;
    padding: 8px 4px;
  }

  .mixer-console[data-active-section="tracks"] > [data-mixer-section="tracks"],
  .mixer-console[data-active-section="fx"] > [data-mixer-section="fx"],
  .mixer-console[data-active-section="eq"] > [data-mixer-section="eq"],
  .mixer-console[data-active-section="master"] > [data-mixer-section="master"] {
    display: flex;
  }

  .mixer-fader-wrap {
    height: 100px;
  }

  .mixer-fader {
    width: 100px;
  }

  .mixer-channel {
    min-width: 48px;
    padding: 4px 4px;
  }

  .mixer-ch-label {
    font-size: 12px;
  }

  .mixer-val {
    font-size: 12px;
  }

  .mixer-mute,
  .mixer-solo {
    font-size: 12px;
  }

  /* Other */
  .transpose-btn {
    width: 28px;
    height: 28px;
    font-size: 16px;
  }

  .hint {
    font-size: 14px;
  }

  .score-toolbar-info {
    font-size: 13px;
  }

  .score-icon-btn {
    width: 40px;
    height: 40px;
  }

  .history-item {
    padding: 10px 12px;
    flex-wrap: wrap;
  }

  .history-item-name {
    font-size: 16px;
  }

  .history-item-meta {
    font-size: 13px;
  }

  .history-item-actions button {
    font-size: 14px;
  }

  .history-item-actions {
    width: 100%;
    justify-content: flex-end;
  }

  [data-tip]::after {
    display: none;
  }

  #generate-btn,
  #save-btn,
  #export-midi,
  #export-wav,
  #export-musicxml,
  #export-preview,
  #share-btn,
  #share-image-btn {
    padding: 8px 14px;
    font-size: 15px;
  }

  .export-track-check {
    font-size: 14px;
  }

  #seed {
    width: 100px;
    font-size: 14px;
  }

  #clear-history,
  #clear-export-log {
    font-size: 14px;
  }

  .export-log-item {
    font-size: 14px;
    padding: 8px 12px;
  }

  .export-log-item {
    font-size: 11px;
    padding: 6px 10px;
  }

  .key {
    width: 28px;
    height: 120px;
  }

  .key.black {
    width: 18px;
    height: 80px;
  }

  /* Hero buttons keep their inline header position; just bump size for touch */
  #theme-toggle,
  #tour-btn,
  #shortcuts-btn {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  #theme-toggle { font-size: 17px; }
  #shortcuts-btn { font-size: 18px; }
  #tour-btn { font-size: 18px; }

  #hero {
    padding: 8px 12px;
    min-height: 56px;
  }

  .score-toolbar-info .song-info-seed {
    font-size: 14px;
  }

  .score-toolbar-info .song-info-meta {
    font-size: 12px;
  }
}

/* Hide keyboard-only affordances on touch-only devices */
@media (hover: none) and (pointer: coarse) {
  #shortcuts-btn,
  .piano-hint,
  .feed-hint {
    display: none;
  }
}

/* ---------------------------------------------------------------------
   Reduced motion — respect the OS-level preference. We keep colour
   transitions (they read as state, not motion) but disable transforms,
   slide-ins and the looping play / step pulses.
   --------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .exercise-content.slide-out-left,
  .exercise-content.slide-out-right,
  .exercise-content.slide-in-from-right,
  .exercise-content.slide-in-from-left {
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
  .exercise-play-btn.is-playing,
  .exercise-step-rail-item.current .exercise-step-rail-icon {
    animation: none !important;
  }
  .confetti-piece { display: none !important; }
}