:root {
  --timeline-bg: #11131a;
  --timeline-border: 1px solid rgba(255, 255, 255, 0.08);
  --timeline-text: #f5f5f5;
  --timeline-muted: #94a3b8;
  --timeline-track-bg: linear-gradient(90deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.08));
  --timeline-track-wrapper-bg: rgba(17, 19, 26, 0.6);
  --timeline-track-wrapper-border: 1px solid rgba(255, 255, 255, 0.1);
  --timeline-zone-bg: rgba(124, 92, 255, 0.25);
  --timeline-zone-border: 1px solid rgba(124, 92, 255, 0.5);
  --timeline-point: #facc15;
  --timeline-playhead: rgba(239, 83, 80, 0.9);
  --timeline-grid-bar: rgba(255, 255, 255, 0.2);
  --timeline-grid-beat: rgba(255, 255, 255, 0.1);
  --timeline-zoom-color: #cbd5f5;
  --timeline-input-border: rgba(255, 255, 255, 0.12);
  --timeline-button-bg: rgba(116, 125, 255, 0.3);
  --timeline-button-secondary-bg: rgba(255, 255, 255, 0.08);
}

.timeline-form {
  background: var(--timeline-bg, #11131a);
  border: var(--timeline-border, 1px solid rgba(255, 255, 255, 0.08));
  border-radius: 14px;
  padding: 16px;
  color: var(--timeline-text, #f5f5f5);
  font-family: "Inter",-apple-system,BlinkMacSystemFont,sans-serif;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 280px;
}

.timeline-form h3 {
  margin: 0;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--timeline-muted, #94a3b8);
}

.timeline-track-wrapper {
  border-radius: 10px;
  border: var(--timeline-track-wrapper-border, 1px solid rgba(255, 255, 255, 0.1));
  background: var(--timeline-track-wrapper-bg, rgba(17, 19, 26, 0.6));
  padding: 6px;
  overflow-x: auto;
  scroll-behavior: smooth;
}

.timeline-track-scroll {
  min-width: 100%;
}

.timeline-track {
  position: relative;
  height: 70px;
  border-radius: 10px;
  background: var(--timeline-track-bg, linear-gradient(90deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.08)));
  overflow: hidden;
  min-width: 800px;
}

.timeline-zoom-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--timeline-zoom-color, #cbd5f5);
}

.timeline-zoom-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-zoom-group input[type="range"] {
  width: 180px;
  appearance: none;
  height: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.4);
  cursor: pointer;
}

.timeline-zoom-group input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #72a8ff;
  border: none;
  box-shadow: 0 0 5px rgba(114, 168, 255, 0.8);
}

.timeline-zoom-group input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #72a8ff;
  border: none;
  box-shadow: 0 0 5px rgba(114, 168, 255, 0.8);
}

.timeline-zoom-value {
  font-weight: 600;
  white-space: nowrap;
}

.timeline-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.timeline-grid-bar,
.timeline-grid-beat {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
}

.timeline-grid-bar {
  background: var(--timeline-grid-bar, rgba(255, 255, 255, 0.2));
}

.timeline-grid-bar::after {
  content: attr(data-label);
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(226, 232, 240, 0.7);
}

.timeline-grid-beat {
  background: var(--timeline-grid-beat, rgba(255, 255, 255, 0.1));
}

.timeline-form-hud {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--timeline-muted, #94a3b8);
}

.timeline-zone {
  position: absolute;
  top: 12px;
  height: 36px;
  border-radius: 999px;
  background: var(--timeline-zone-bg, rgba(124, 92, 255, 0.25));
  border: var(--timeline-zone-border, 1px solid rgba(124, 92, 255, 0.5));
  font-size: 0.65rem;
  text-align: center;
  line-height: 36px;
  color: var(--timeline-text, #fff);
}

.timeline-point {
  position: absolute;
  top: 6px;
  width: 8px;
  height: 48px;
  border-radius: 4px;
  background: var(--timeline-point, #facc15);
  transform: translateX(-50%);
}

.timeline-playhead {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--timeline-playhead, #ef5350);
  transform: translateX(-50%);
  box-shadow: 0 0 4px rgba(239, 83, 80, 0.7);
}

.timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.timeline-list-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 6px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.02);
}

.timeline-form form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.timeline-form label {
  font-size: 0.75rem;
  color: var(--timeline-muted, #94a3b8);
  width: 100%;
}

.timeline-form input[type="number"],
.timeline-form input[type="text"] {
  width: 100%;
  border: 1px solid var(--timeline-input-border, rgba(255, 255, 255, 0.12));
  border-radius: 6px;
  background: transparent;
  color: inherit;
  padding: 6px 8px;
  font-size: 0.85rem;
}

.timeline-form button {
  border: none;
  border-radius: 999px;
  padding: 6px 14px;
  background: var(--timeline-button-bg, rgba(116, 125, 255, 0.3));
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.timeline-form button.secondary {
  background: var(--timeline-button-secondary-bg, rgba(255, 255, 255, 0.08));
}