/**
 * Video Finishing Tool - Timeline Styles
 * Timeline component styling
 */

/* Timeline Section */
.timeline-section {
    flex-shrink: 0;
    height: var(--timeline-height);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

/* Timeline Toolbar */
.timeline-toolbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.zoom-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.zoom-btn:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

#zoom-level {
    font-size: 12px;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: center;
}

/* Timeline Container */
.timeline-container {
    flex: 1;
    position: relative;
    overflow-x: auto;
    overflow-y: hidden;
}

/* Time Ruler */
.timeline-ruler {
    position: sticky;
    top: 0;
    height: 24px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    z-index: 10;
    min-width: 100%;
}

.ruler-tick {
    position: absolute;
    top: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: 2px;
}

.ruler-tick::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 8px;
    background: var(--border-color);
}

.ruler-tick.major::before {
    height: 12px;
    background: var(--text-muted);
}

.ruler-tick-label {
    font-size: 10px;
    color: var(--text-muted);
    font-family: 'SF Mono', monospace;
    white-space: nowrap;
}

/* Playhead */
.timeline-playhead {
    position: absolute;
    top: 0;
    left: 100px; /* Will be updated by JS */
    width: 1px;
    height: 100%;
    z-index: 20;
    pointer-events: none;
}

.playhead-head {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    background: var(--accent-danger);
    clip-path: polygon(0 0, 100% 0, 50% 100%);
    pointer-events: auto;
    cursor: ew-resize;
}

.playhead-line {
    position: absolute;
    top: 12px;
    left: 0;
    width: 1px;
    height: calc(100% - 12px);
    background: var(--accent-danger);
}

/* Timeline Tracks */
.timeline-tracks {
    position: relative;
    min-width: 100%;
}

.timeline-track {
    display: flex;
    height: 48px;
    border-bottom: 1px solid var(--border-subtle);
}

.timeline-track:last-child {
    border-bottom: none;
}

/* Audio track needs extra height for voiceover + music rows */
#track-audio {
    min-height: 60px;
}

.track-label {
    flex-shrink: 0;
    width: 100px;
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border-color);
    position: sticky;
    left: 0;
    z-index: 5;
}

.track-label span {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.track-content {
    flex: 1;
    position: relative;
    min-height: 100%;
    background: var(--bg-primary);
}

/* Track Blocks (Clips, Overlays, Audio) */
.track-block {
    position: absolute;
    top: 4px;
    height: calc(100% - 8px);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: box-shadow var(--transition-fast);
    overflow: hidden;
}

.track-block:hover {
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.track-block.selected {
    box-shadow: 0 0 0 2px var(--accent-secondary);
}

/* Video Clip Block */
.track-block.clip-block {
    background: linear-gradient(135deg, #6366f1, #818cf8);
    min-width: 20px;
}

.clip-block-inner {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 var(--spacing-sm);
    gap: var(--spacing-xs);
}

.clip-block-thumb {
    width: 32px;
    height: 24px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 2px;
    flex-shrink: 0;
}

.clip-block-name {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Trim Handles on Clip Blocks */
.clip-trim-handle {
    position: absolute;
    top: 0;
    width: 6px;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
    cursor: ew-resize;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.track-block:hover .clip-trim-handle,
.track-block.selected .clip-trim-handle {
    opacity: 1;
}

.clip-trim-handle.left {
    left: 0;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.clip-trim-handle.right {
    right: 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.clip-trim-handle:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Text Overlay Block */
.track-block.text-block {
    background: linear-gradient(135deg, #22c55e, #4ade80);
    min-width: 30px;
}

.text-block-inner {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 var(--spacing-sm);
    cursor: grab;
}

.text-block-inner:active {
    cursor: grabbing;
}

.text-block-icon {
    width: 16px;
    height: 16px;
    margin-right: var(--spacing-xs);
    flex-shrink: 0;
}

.text-block-preview {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Image Overlay Block */
.track-block.image-block {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    min-width: 30px;
}

.image-block-inner {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 var(--spacing-sm);
    cursor: grab;
}

.image-block-inner:active {
    cursor: grabbing;
}

.image-block-thumb {
    width: 24px;
    height: 24px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 2px;
    margin-right: var(--spacing-xs);
    flex-shrink: 0;
    object-fit: cover;
}

.image-block-name {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Audio Block */
.track-block.audio-block {
    min-width: 30px;
}

.track-block.audio-block.voiceover {
    background: linear-gradient(135deg, #ec4899, #f472b6);
}

.track-block.audio-block.music {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
}

.audio-block-inner {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 var(--spacing-sm);
    cursor: grab;
}

.audio-block-inner:active {
    cursor: grabbing;
}

.audio-block-icon {
    width: 16px;
    height: 16px;
    margin-right: var(--spacing-xs);
    flex-shrink: 0;
}

.audio-block-name {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Overlay Timing Handles */
.overlay-timing-handle {
    position: absolute;
    top: 0;
    width: 8px;
    height: 100%;
    background: rgba(255, 255, 255, 0.4);
    cursor: ew-resize;
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: 10;
}

.track-block:hover .overlay-timing-handle,
.track-block.selected .overlay-timing-handle {
    opacity: 1;
}

.overlay-timing-handle.start {
    left: 0;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.overlay-timing-handle.end {
    right: 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.overlay-timing-handle:hover {
    background: rgba(255, 255, 255, 0.7);
}

/* Timeline Empty State */
.track-empty-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
    color: var(--text-muted);
    pointer-events: none;
}

/* Scrollbar Styling */
.timeline-container::-webkit-scrollbar {
    height: 8px;
}

.timeline-container::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

.timeline-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

.timeline-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}