:root {
  color-scheme: dark;
  --bg: #11161d;
  --panel: #1a212b;
  --panel-2: #242d3a;
  --text: #eef3fa;
  --muted: #aab6c8;
  --accent: #74b0ff;
  --border: #364254;
  --danger: #ff8f8f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}
button, input, textarea, select {
  font: inherit;
  color: var(--text);
  background: #0f141b;
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 0.55rem 0.7rem;
}
button { cursor: pointer; }
button:hover, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, .timeline:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus { left: 1rem; top: 1rem; z-index: 2; background: #000; padding: 0.5rem; }
.app-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
}
.app-header h1 { margin: 0; font-size: 1.6rem; }
.subtitle, .timeline-meta { color: var(--muted); }
.timeline-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.timeline-head h2 {
  margin: 0;
  margin-right: auto;
}
.timeline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.shortcut-panel {
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 0.75rem 0.9rem;
  background: #0f141b;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.panel-head h2 {
  margin: 0;
}
.project-head {
  padding-bottom: 0.1rem;
}
.menu-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}
.menu-strip button,
.project-head #projectBtn {
  background: linear-gradient(180deg, #2c3848 0%, #1c2530 100%);
  border-color: #4c5c74;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}
.menu-strip button:hover,
.menu-strip button:focus-visible,
.project-head #projectBtn:hover,
.project-head #projectBtn:focus-visible {
  border-color: #74b0ff;
}
.menu-panel {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(170, 182, 200, 0.16);
}
.menu-panel[hidden] {
  display: none;
}
.controls-body {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(170, 182, 200, 0.16);
}
.layout {
  display: grid;
  grid-template-columns: minmax(320px, 540px) minmax(420px, 1fr);
  gap: 1rem;
  padding: 1rem;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
}
.grid {
  display: grid;
  gap: 0.8rem;
}
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
}
textarea { min-height: 8rem; resize: vertical; }
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}
.status-line {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 0.7rem 0.9rem;
  min-width: 18rem;
}
.timeline {
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  min-height: 28rem;
  max-height: 75vh;
  overflow: auto;
  padding: 0.4rem;
  background: #0f141b;
}
.timeline-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.45rem 0.55rem;
  border-radius: 0.6rem;
}
.timeline-row + .timeline-row { margin-top: 0.2rem; }
.timeline-row[data-selected="true"] {
  background: rgba(116, 176, 255, 0.2);
}
.timeline-row[data-current="true"] {
  outline: 2px solid var(--accent);
}
.timeline-index { color: var(--muted); }
.timeline-extra { color: var(--muted); font-size: 0.95rem; }
.help-text p { margin: 0.55rem 0; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
  white-space: nowrap;
}
@media (max-width: 1050px) {
  .layout { grid-template-columns: 1fr; }
}

.timeline-row[data-playing="true"] {
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.18);
}
.timeline-row[data-current="true"][data-playing="true"] {
  outline-style: dashed;
}