/* ═══════════════════════════════════════════════════════════════════════════
   LD-SEQUENCE  —  .edit folder app styles
   Dark mode, responsive, modern, production-ready
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Root Variables ──────────────────────────────────────────────────────── */
:root {
  --seq-bg: #0d0f12;
  --seq-surface: #161a1f;
  --seq-surface-2: #1c2128;
  --seq-surface-3: #242a33;
  --seq-border: rgba(255,255,255,0.06);
  --seq-border-hover: rgba(255,255,255,0.12);
  --seq-text: #e6edf3;
  --seq-text-muted: #8b949e;
  --seq-text-dim: #555d66;
  --seq-accent: #58a6ff;
  --seq-accent-dim: rgba(88,166,255,0.15);
  --seq-green: #3fb950;
  --seq-green-dim: rgba(63,185,80,0.15);
  --seq-orange: #d29922;
  --seq-orange-dim: rgba(210,153,34,0.15);
  --seq-red: #f85149;
  --seq-red-dim: rgba(248,81,73,0.15);
  --seq-purple: #bc8cff;
  --seq-radius: 8px;
  --seq-radius-sm: 5px;
  --seq-radius-lg: 12px;
  --seq-font: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --seq-mono: 'IBM Plex Mono', 'SF Mono', 'Cascadia Code', Consolas, monospace;
  --seq-transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
  --seq-shadow: 0 1px 3px rgba(0,0,0,0.4), 0 0 0 1px var(--seq-border);
  --seq-shadow-lg: 0 8px 24px rgba(0,0,0,0.5), 0 0 0 1px var(--seq-border);
}

/* ── Container ──────────────────────────────────────────────────────────── */
.seq-app {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--seq-bg);
  color: var(--seq-text);
  font-family: var(--seq-font);
  font-size: 13px;
  line-height: 1.5;
  overflow: hidden;
  position: relative;
}

/* ── Toolbar ─────────────────────────────────────────────────────────────── */
.seq-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: var(--seq-surface);
  border-bottom: 1px solid var(--seq-border);
  flex-shrink: 0;
  min-height: 40px;
  z-index: 10;
}
.seq-toolbar-group {
  display: flex;
  align-items: center;
  gap: 2px;
}
.seq-toolbar-sep {
  width: 1px;
  height: 20px;
  background: var(--seq-border);
  margin: 0 6px;
}
.seq-toolbar-spacer { flex: 1; }

.seq-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid transparent;
  border-radius: var(--seq-radius-sm);
  background: transparent;
  color: var(--seq-text-muted);
  font-family: var(--seq-font);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--seq-transition);
  line-height: 1.2;
}
.seq-btn:hover {
  background: var(--seq-surface-3);
  color: var(--seq-text);
}
.seq-btn.active {
  background: var(--seq-accent-dim);
  color: var(--seq-accent);
  border-color: rgba(88,166,255,0.2);
}
.seq-btn.primary {
  background: var(--seq-accent);
  color: #fff;
  border-color: transparent;
}
.seq-btn.primary:hover {
  background: #79b8ff;
}
.seq-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.seq-btn i, .seq-btn svg { font-size: 13px; width: 14px; height: 14px; }

/* ── Main Layout ─────────────────────────────────────────────────────────── */
.seq-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* ── Player / Preview ────────────────────────────────────────────────────── */
.seq-preview {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: #000;
  min-height: 200px;
}
.seq-preview-inner {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 16/9;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.seq-player-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 60ms ease;
}
.seq-player-layer.hidden {
  opacity: 0;
  pointer-events: none;
}
.seq-text-card {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  font-size: clamp(16px, 3vw, 28px);
  font-weight: 500;
  color: var(--seq-text);
  line-height: 1.6;
  max-width: 80%;
  opacity: 0;
  transition: opacity 200ms ease;
}
.seq-text-card.visible { opacity: 1; }

.seq-preview-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  padding: 24px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  pointer-events: none;
}
.seq-preview-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}
.seq-preview-time {
  font-family: var(--seq-mono);
  font-size: 11px;
  color: rgba(255,255,255,0.6);
}

/* ── Transport Controls ──────────────────────────────────────────────────── */
.seq-transport {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--seq-surface);
  border-top: 1px solid var(--seq-border);
  border-bottom: 1px solid var(--seq-border);
  flex-shrink: 0;
}
.seq-transport-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--seq-radius-sm);
  background: transparent;
  color: var(--seq-text-muted);
  cursor: pointer;
  transition: all var(--seq-transition);
  font-size: 14px;
}
.seq-transport-btn:hover {
  background: var(--seq-surface-3);
  color: var(--seq-text);
}
.seq-transport-btn.play {
  width: 36px;
  height: 36px;
  background: var(--seq-accent);
  color: #fff;
  border-radius: 50%;
  font-size: 15px;
}
.seq-transport-btn.play:hover { background: #79b8ff; }

.seq-timecode {
  font-family: var(--seq-mono);
  font-size: 12px;
  color: var(--seq-text-muted);
  padding: 0 8px;
  min-width: 100px;
  text-align: center;
  user-select: none;
}

.seq-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--seq-surface-3);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  overflow: visible;
}
.seq-progress-fill {
  height: 100%;
  background: var(--seq-accent);
  border-radius: 2px;
  position: relative;
  transition: width 100ms linear;
}
.seq-progress-fill::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--seq-accent);
  box-shadow: 0 0 4px rgba(88,166,255,0.5);
  opacity: 0;
  transition: opacity var(--seq-transition);
}
.seq-progress-bar:hover .seq-progress-fill::after { opacity: 1; }

/* ── Segment Strip (mini-timeline below player) ──────────────────────────── */
.seq-strip {
  display: flex;
  padding: 4px 12px;
  gap: 2px;
  background: var(--seq-surface);
  flex-shrink: 0;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--seq-surface-3) transparent;
}
.seq-strip-item {
  flex: 0 0 auto;
  padding: 4px 10px;
  border-radius: var(--seq-radius-sm);
  background: var(--seq-surface-2);
  border: 1px solid var(--seq-border);
  color: var(--seq-text-muted);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--seq-transition);
  user-select: none;
}
.seq-strip-item:hover {
  background: var(--seq-surface-3);
  border-color: var(--seq-border-hover);
  color: var(--seq-text);
}
.seq-strip-item.active {
  background: var(--seq-accent-dim);
  border-color: rgba(88,166,255,0.25);
  color: var(--seq-accent);
}

/* ── Timeline View ───────────────────────────────────────────────────────── */
.seq-timeline {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--seq-bg);
}
.seq-timeline-ruler {
  display: flex;
  align-items: flex-end;
  padding: 0 0 2px 120px;
  height: 24px;
  background: var(--seq-surface);
  border-bottom: 1px solid var(--seq-border);
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}
.seq-ruler-tick {
  position: absolute;
  font-family: var(--seq-mono);
  font-size: 10px;
  color: var(--seq-text-dim);
  transform: translateX(-50%);
  white-space: nowrap;
}
.seq-timeline-tracks {
  flex: 1;
  overflow: auto;
  position: relative;
}
.seq-track {
  display: flex;
  align-items: stretch;
  min-height: 48px;
  border-bottom: 1px solid var(--seq-border);
  position: relative;
}
.seq-track-label {
  width: 120px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-size: 11px;
  font-weight: 500;
  color: var(--seq-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--seq-surface);
  border-right: 1px solid var(--seq-border);
}
.seq-track-lane {
  flex: 1;
  position: relative;
  min-height: 48px;
}
.seq-clip {
  position: absolute;
  top: 4px;
  bottom: 4px;
  border-radius: var(--seq-radius-sm);
  background: var(--seq-surface-3);
  border: 1px solid var(--seq-border);
  display: flex;
  align-items: center;
  padding: 0 8px;
  font-size: 11px;
  color: var(--seq-text);
  cursor: pointer;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  transition: border-color var(--seq-transition), box-shadow var(--seq-transition);
  user-select: none;
}
.seq-clip:hover {
  border-color: var(--seq-accent);
  box-shadow: 0 0 0 1px var(--seq-accent);
}
.seq-clip.active {
  border-color: var(--seq-accent);
  background: var(--seq-accent-dim);
}
.seq-clip.base {
  background: linear-gradient(135deg, var(--seq-surface-3) 0%, #1a2332 100%);
}
.seq-clip.graphics {
  background: linear-gradient(135deg, rgba(188,140,255,0.1) 0%, rgba(188,140,255,0.05) 100%);
  border-color: rgba(188,140,255,0.2);
}
.seq-clip.broll {
  background: linear-gradient(135deg, rgba(63,185,80,0.1) 0%, rgba(63,185,80,0.05) 100%);
  border-color: rgba(63,185,80,0.2);
}
.seq-clip.music {
  background: linear-gradient(135deg, rgba(210,153,34,0.1) 0%, rgba(210,153,34,0.05) 100%);
  border-color: rgba(210,153,34,0.2);
}
.seq-clip.sfx {
  background: linear-gradient(135deg, rgba(248,81,73,0.1) 0%, rgba(248,81,73,0.05) 100%);
  border-color: rgba(248,81,73,0.2);
}

.seq-clip-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 6px;
  cursor: col-resize;
  z-index: 2;
}
.seq-clip-handle.left { left: 0; }
.seq-clip-handle.right { right: 0; }
.seq-clip-handle:hover { background: rgba(88,166,255,0.3); }

.seq-playhead {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--seq-accent);
  z-index: 5;
  pointer-events: none;
}
.seq-playhead::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -5px;
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 7px solid var(--seq-accent);
}

/* ── Transcript View ─────────────────────────────────────────────────────── */
.seq-transcript {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  background: var(--seq-bg);
}
.seq-transcript-section {
  margin-bottom: 24px;
  padding: 16px;
  background: var(--seq-surface);
  border-radius: var(--seq-radius);
  border: 1px solid var(--seq-border);
}
.seq-transcript-heading {
  font-size: 13px;
  font-weight: 600;
  color: var(--seq-accent);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.seq-transcript-heading .seq-timecode-badge {
  font-family: var(--seq-mono);
  font-size: 11px;
  color: var(--seq-text-dim);
  font-weight: 400;
}
.seq-word {
  display: inline;
  padding: 1px 1px;
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--seq-transition);
}
.seq-word:hover {
  background: var(--seq-accent-dim);
}
.seq-word.deleted {
  text-decoration: line-through;
  color: var(--seq-text-dim);
  opacity: 0.5;
}
.seq-word.playing {
  background: var(--seq-accent-dim);
  color: var(--seq-accent);
}
.seq-transcript-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--seq-border);
}

/* ── Waterfall View ──────────────────────────────────────────────────────── */
.seq-waterfall {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  background: var(--seq-bg);
}
.seq-wf-node {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  margin-bottom: 2px;
  border-radius: var(--seq-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--seq-transition);
  position: relative;
}
.seq-wf-node:hover {
  background: var(--seq-surface);
  border-color: var(--seq-border);
}
.seq-wf-node.active {
  background: var(--seq-accent-dim);
  border-color: rgba(88,166,255,0.2);
}
.seq-wf-indent {
  flex-shrink: 0;
}
.seq-wf-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--seq-text-muted);
  flex-shrink: 0;
}
.seq-wf-name {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  color: var(--seq-text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.seq-wf-time {
  font-family: var(--seq-mono);
  font-size: 11px;
  color: var(--seq-text-dim);
  flex-shrink: 0;
}
.seq-wf-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 500;
  flex-shrink: 0;
}
.seq-wf-status.done {
  background: var(--seq-green-dim);
  color: var(--seq-green);
}
.seq-wf-status.running {
  background: var(--seq-orange-dim);
  color: var(--seq-orange);
}
.seq-wf-status.pending {
  background: var(--seq-surface-3);
  color: var(--seq-text-dim);
}
.seq-wf-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--seq-transition);
}
.seq-wf-node:hover .seq-wf-actions { opacity: 1; }
.seq-wf-action-btn {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--seq-radius-sm);
  background: var(--seq-surface-3);
  color: var(--seq-text-muted);
  font-size: 11px;
  cursor: pointer;
  transition: all var(--seq-transition);
}
.seq-wf-action-btn:hover {
  background: var(--seq-accent-dim);
  color: var(--seq-accent);
}

/* ── Empty / Welcome State ───────────────────────────────────────────────── */
.seq-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px;
  text-align: center;
}
.seq-empty-icon {
  font-size: 48px;
  color: var(--seq-text-dim);
  opacity: 0.5;
}
.seq-empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--seq-text);
}
.seq-empty-subtitle {
  font-size: 13px;
  color: var(--seq-text-muted);
  max-width: 360px;
  line-height: 1.6;
}

/* ── Progress Indicator ──────────────────────────────────────────────────── */
.seq-progress {
  padding: 8px 16px;
  background: var(--seq-surface);
  border-top: 1px solid var(--seq-border);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--seq-text-muted);
  flex-shrink: 0;
}
.seq-progress-track {
  flex: 1;
  height: 3px;
  background: var(--seq-surface-3);
  border-radius: 2px;
  overflow: hidden;
}
.seq-progress-bar-inner {
  height: 100%;
  background: var(--seq-accent);
  border-radius: 2px;
  transition: width 300ms ease;
}

/* ── Dropdown / Menus ────────────────────────────────────────────────────── */
.seq-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--seq-surface-2);
  border: 1px solid var(--seq-border);
  border-radius: var(--seq-radius);
  box-shadow: var(--seq-shadow-lg);
  min-width: 180px;
  z-index: 100;
  padding: 4px;
  display: none;
}
.seq-dropdown.open { display: block; }
.seq-dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: var(--seq-radius-sm);
  font-size: 12px;
  color: var(--seq-text);
  cursor: pointer;
  transition: background var(--seq-transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: var(--seq-font);
}
.seq-dropdown-item:hover { background: var(--seq-surface-3); }
.seq-dropdown-item i { color: var(--seq-text-muted); width: 16px; text-align: center; }
.seq-dropdown-sep {
  height: 1px;
  background: var(--seq-border);
  margin: 4px 0;
}

/* ── Toast ────────────────────────────────────────────────────────────────── */
.seq-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: 10px 20px;
  background: var(--seq-surface-2);
  border: 1px solid var(--seq-border);
  border-radius: var(--seq-radius);
  box-shadow: var(--seq-shadow-lg);
  color: var(--seq-text);
  font-size: 13px;
  z-index: 9999;
  opacity: 0;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}
.seq-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Getting Started / Welcome ────────────────────────────────────────────── */
.seq-welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 32px 24px;
  text-align: center;
  background: var(--seq-bg);
}
.seq-welcome-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--seq-accent-dim), rgba(188,140,255,0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--seq-accent);
}
.seq-welcome-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--seq-text);
}
.seq-welcome-desc {
  font-size: 14px;
  color: var(--seq-text-muted);
  max-width: 400px;
  line-height: 1.6;
}
.seq-welcome-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 8px;
}
.seq-welcome-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border: 1px solid var(--seq-border);
  border-radius: var(--seq-radius);
  background: var(--seq-surface);
  color: var(--seq-text);
  font-family: var(--seq-font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--seq-transition);
  min-width: 170px;
  text-align: left;
}
.seq-welcome-btn:hover {
  background: var(--seq-surface-2);
  border-color: var(--seq-accent);
  box-shadow: 0 0 0 1px var(--seq-accent);
}
.seq-welcome-btn:active { transform: scale(0.98); }
.seq-welcome-btn i {
  font-size: 20px;
  color: var(--seq-accent);
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}
.seq-welcome-btn .seq-wb-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.seq-welcome-btn .seq-wb-label small {
  font-size: 11px;
  color: var(--seq-text-muted);
  font-weight: 400;
}
.seq-welcome-btn.primary {
  background: var(--seq-accent);
  border-color: var(--seq-accent);
  color: #fff;
}
.seq-welcome-btn.primary i { color: rgba(255,255,255,0.85); }
.seq-welcome-btn.primary .seq-wb-label small { color: rgba(255,255,255,0.6); }
.seq-welcome-btn.primary:hover { background: #79b8ff; border-color: #79b8ff; }

/* ── Record overlay ──────────────────────────────────────────────────────── */
.seq-record-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 20;
  backdrop-filter: blur(4px);
}
.seq-record-preview {
  width: 80%;
  max-width: 480px;
  aspect-ratio: 16/9;
  border-radius: var(--seq-radius);
  background: #000;
  overflow: hidden;
  border: 2px solid var(--seq-red);
  box-shadow: 0 0 20px rgba(248,81,73,0.3);
}
.seq-record-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}
.seq-record-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}
.seq-record-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 3px solid var(--seq-red);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--seq-transition);
}
.seq-record-btn:hover { background: rgba(248,81,73,0.2); }
.seq-record-btn .seq-rec-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--seq-red);
  transition: all 200ms ease;
}
.seq-record-btn.recording .seq-rec-dot {
  width: 20px;
  height: 20px;
  border-radius: 4px;
}
.seq-record-timer {
  font-family: var(--seq-mono);
  font-size: 16px;
  color: var(--seq-text);
}
.seq-record-timer.active { color: var(--seq-red); }

/* ── Upload drop zone ────────────────────────────────────────────────────── */
.seq-drop-active .seq-preview,
.seq-drop-active .seq-welcome {
  outline: 2px dashed var(--seq-accent);
  outline-offset: -4px;
  background: var(--seq-accent-dim);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .seq-toolbar { padding: 8px 10px; gap: 4px; }
  .seq-btn span { display: none; }
  .seq-btn { padding: 8px 10px; min-height: 36px; }
  .seq-btn i, .seq-btn svg { font-size: 16px; width: 18px; height: 18px; }
  .seq-transport { padding: 8px 10px; gap: 6px; }
  .seq-transport-btn { width: 38px; height: 38px; font-size: 16px; }
  .seq-transport-btn.play { width: 44px; height: 44px; font-size: 18px; }
  .seq-progress-bar { height: 6px; }
  .seq-track-label { width: 60px; font-size: 10px; padding: 0 6px; }
  .seq-timeline-ruler { padding-left: 60px; }
  .seq-transcript { padding: 12px; }
  .seq-waterfall { padding: 8px; }
  .seq-preview-overlay { padding: 16px 8px 8px; }
  .seq-strip-item { padding: 6px 12px; font-size: 12px; }
  .seq-strip { padding: 6px 10px; gap: 4px; }
  .seq-timecode { min-width: 80px; font-size: 12px; }
  .seq-welcome-btn { padding: 16px 20px; font-size: 15px; min-width: 160px; }
  .seq-welcome-btn i { font-size: 22px; }
  .seq-welcome-title { font-size: 20px; }
  .seq-welcome-desc { font-size: 15px; }
}
@media (max-width: 480px) {
  .seq-toolbar { flex-wrap: wrap; }
  .seq-timecode { min-width: 70px; font-size: 11px; }
  .seq-welcome-actions { flex-direction: column; width: 100%; }
  .seq-welcome-btn { width: 100%; justify-content: center; }
}

/* ── Scrollbars ──────────────────────────────────────────────────────────── */
.seq-app *::-webkit-scrollbar { width: 6px; height: 6px; }
.seq-app *::-webkit-scrollbar-track { background: transparent; }
.seq-app *::-webkit-scrollbar-thumb {
  background: var(--seq-surface-3);
  border-radius: 3px;
}
.seq-app *::-webkit-scrollbar-thumb:hover { background: var(--seq-text-dim); }

/* ── Animations ──────────────────────────────────────────────────────────── */
@keyframes seq-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.seq-spin { animation: seq-spin 1s linear infinite; }

@keyframes seq-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.seq-pulse { animation: seq-pulse 2s ease-in-out infinite; }

/* ── Auto Mode Toggle ────────────────────────────────────────────────── */
.seq-auto-toggle {
  display: flex; align-items: center; gap: 6px; cursor: pointer;
  font-size: 12px; color: var(--seq-text-muted); user-select: none;
}
.seq-auto-toggle input[type="checkbox"] { display: none; }
.seq-auto-slider {
  width: 32px; height: 18px; background: var(--seq-surface-3); border-radius: 9px;
  position: relative; transition: background var(--seq-transition);
}
.seq-auto-slider::after {
  content: ''; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px;
  background: var(--seq-text-muted); border-radius: 50%; transition: transform var(--seq-transition), background var(--seq-transition);
}
.seq-auto-toggle input:checked + .seq-auto-slider { background: var(--seq-accent-dim); }
.seq-auto-toggle input:checked + .seq-auto-slider::after { transform: translateX(14px); background: var(--seq-accent); }
.seq-auto-text { font-weight: 500; }

/* ── Pipeline Status ─────────────────────────────────────────────────── */
.seq-pipeline-status {
  display: flex; align-items: center; gap: 6px; padding: 4px 10px;
  background: var(--seq-accent-dim); border-radius: var(--seq-radius-sm);
  font-size: 12px; color: var(--seq-accent); white-space: nowrap;
}

/* ── Zone Cards ──────────────────────────────────────────────────────── */
.seq-zone-card {
  display: flex; flex-direction: column; gap: 4px;
  padding: 8px 12px; background: var(--seq-surface-2); border-radius: var(--seq-radius-sm);
  cursor: pointer; transition: background var(--seq-transition), transform 0.1s;
  min-width: 120px; flex-shrink: 0;
}
.seq-zone-card:hover { background: var(--seq-surface-3); }
.seq-zone-card:active { transform: scale(0.98); }
.seq-zone-card.active { background: var(--seq-accent-dim); }
.seq-zone-card-header { display: flex; flex-direction: column; gap: 2px; }
.seq-zone-card-label { font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 150px; }
.seq-zone-card-time { font-size: 10px; color: var(--seq-text-dim); font-family: var(--seq-mono); }
.seq-zone-card-dots { display: flex; gap: 3px; margin-top: 2px; }
.seq-zone-add {
  align-items: center; justify-content: center; flex-direction: row; gap: 6px;
  border: 1px dashed var(--seq-border-hover); background: transparent; min-width: 80px;
  color: var(--seq-text-muted); font-size: 11px;
}
.seq-zone-add:hover { border-color: var(--seq-accent); color: var(--seq-accent); }

/* ── Zone Card Agent Button ──────────────────────────────────────────── */
.seq-zone-card { position: relative; }
.seq-zone-agent-btn {
  position: absolute; top: 4px; right: 4px; background: var(--seq-surface-3);
  border: none; color: var(--seq-text-muted); cursor: pointer; padding: 3px 5px;
  border-radius: 3px; font-size: 10px; opacity: 0; transition: opacity var(--seq-transition);
}
.seq-zone-card:hover .seq-zone-agent-btn { opacity: 1; }
.seq-zone-agent-btn:hover { background: var(--seq-accent-dim); color: var(--seq-accent); }

/* ── Agent Status Dots / Badges ──────────────────────────────────────── */
.seq-agent-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--seq-text-dim);
}
.seq-agent-dot.done { background: var(--seq-green); }
.seq-agent-dot.working, .seq-agent-dot.generating { background: var(--seq-orange); animation: seq-pulse 1.5s infinite; }
.seq-agent-dot.error { background: var(--seq-red); }
.seq-agent-dot.skipped { background: var(--seq-text-dim); opacity: 0.4; }

.seq-agent-badge {
  display: inline-block; font-size: 9px; padding: 1px 5px; border-radius: 3px;
  background: var(--seq-surface-3); color: var(--seq-text-dim); margin-left: 4px;
}
.seq-agent-badge.seq-agent-done { background: var(--seq-green-dim); color: var(--seq-green); }
.seq-agent-badge.seq-agent-working { background: var(--seq-orange-dim); color: var(--seq-orange); animation: seq-pulse 1.5s infinite; }

/* ── Zone Badge in Transcript ────────────────────────────────────────── */
.seq-zone-badge {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 6px 0; margin-bottom: 4px;
}
.seq-zone-badge strong { font-size: 13px; }

/* ── Progress Bar Zone Mini-Map ──────────────────────────────────────── */
.seq-progress-zones, .seq-progress-deleted {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0; pointer-events: none;
}
.seq-progress-zone-block {
  position: absolute; top: 0; bottom: 0; opacity: 0.25; border-radius: 2px;
}
.seq-progress-deleted-block {
  position: absolute; top: 0; bottom: 0; background: rgba(0,0,0,0.6);
  border-left: 1px solid var(--seq-red); border-right: 1px solid var(--seq-red);
}
.seq-progress-head {
  position: absolute; top: -2px; bottom: -2px; width: 3px; background: #fff;
  border-radius: 2px; transform: translateX(-1px); pointer-events: none;
  box-shadow: 0 0 4px rgba(0,0,0,0.5); z-index: 3; transition: left 50ms linear;
}
.seq-progress-bar { position: relative; }

/* ── Transcript Toolbar & Selection ──────────────────────────────────── */
.seq-transcript-toolbar {
  display: flex; gap: 6px; padding: 8px 12px; flex-wrap: wrap;
  border-bottom: 1px solid var(--seq-border); position: sticky; top: 0;
  background: var(--seq-bg); z-index: 2;
}
.seq-btn.small { font-size: 11px; padding: 4px 8px; gap: 4px; }
.seq-word.selected { background: var(--seq-accent-dim); color: var(--seq-accent); border-radius: 2px; }
.seq-word-container { line-height: 2; padding: 8px 0; }

/* ── Button Labels (hide on mobile) ──────────────────────────────────── */
.seq-btn-label { display: inline; }

/* ── Mobile Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .seq-toolbar {
    flex-wrap: wrap; gap: 4px; padding: 6px 8px;
  }
  .seq-toolbar-sep { display: none; }
  .seq-toolbar-spacer { flex: 0; }
  .seq-btn-label { display: none; }
  .seq-btn { min-width: 36px; justify-content: center; padding: 6px 8px; }
  .seq-zone-card { min-width: 100px; padding: 6px 8px; }
  .seq-zone-card-label { max-width: 80px; font-size: 11px; }
  .seq-transport { padding: 6px 8px; gap: 6px; }
  .seq-timecode { font-size: 11px; min-width: 80px; }
  .seq-preview-overlay { display: none; }
  .seq-strip { gap: 4px; padding: 4px 8px; }
  .seq-transcript-toolbar { padding: 6px 8px; }
  .seq-transcript-section { padding: 0 8px; }
  .seq-welcome-actions { flex-direction: column; }
  .seq-welcome-btn { min-width: unset; }
  .seq-auto-text { display: none; }
}

@media (max-width: 480px) {
  .seq-toolbar-actions { display: flex; gap: 2px; }
  .seq-zone-card { min-width: 80px; }
  .seq-progress-bar { height: 24px; }
}

/* ── Modal ────────────────────────────────────────────────────────────── */
.seq-modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6); z-index: 10000;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.seq-modal {
  background: var(--seq-surface); border-radius: var(--seq-radius-lg);
  box-shadow: var(--seq-shadow-lg); width: 90%; max-width: 520px;
  max-height: 90vh; overflow-y: auto; padding: 0;
}
.seq-modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px; border-bottom: 1px solid var(--seq-border);
  font-weight: 600; font-size: 14px;
}
.seq-modal-close {
  background: none; border: none; color: var(--seq-text-muted); font-size: 20px;
  cursor: pointer; padding: 0 4px; line-height: 1;
}
.seq-modal-close:hover { color: var(--seq-text); }
.seq-modal-textarea {
  width: 100%; box-sizing: border-box; margin: 0; padding: 14px 18px;
  background: var(--seq-surface-2); border: none; border-bottom: 1px solid var(--seq-border);
  color: var(--seq-text); font-family: var(--seq-font); font-size: 13px;
  resize: vertical; line-height: 1.5;
}
.seq-modal-textarea:focus { outline: none; background: var(--seq-surface-3); }
.seq-modal-buttons {
  display: flex; gap: 8px; padding: 14px 18px; flex-wrap: wrap;
}

/* ── Settings Form ───────────────────────────────────────────────────── */
.seq-settings-form { padding: 14px 18px; }
.seq-settings-group { margin-bottom: 18px; }
.seq-settings-label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.seq-settings-hint { font-size: 11px; color: var(--seq-text-muted); margin-bottom: 8px; }
.seq-settings-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.seq-settings-input {
  width: 80px; padding: 5px 8px; background: var(--seq-surface-2);
  border: 1px solid var(--seq-border); border-radius: var(--seq-radius-sm);
  color: var(--seq-text); font-family: var(--seq-mono); font-size: 13px;
  text-align: center;
}
.seq-settings-input:focus { outline: none; border-color: var(--seq-accent); }