.timeline {
    position: relative;
    width: 100%;
    height: 40px; /* Taller to feel more like Blender's timeline */
    margin: var(--space-2) 0;
    touch-action: none;
    user-select: none;
    background-color: var(--surface-2);
    padding-top: 16px; /* Space for labels */
    border-radius: var(--radius-md);
}

.timeline-track {
    position: absolute;
    top: 16px; /* Position below the padding */
    left: 0;
    width: 100%;
    height: 24px;
    background-color: var(--surface-3); /* Darker track */
    border-radius: 0;
}

.timeline-progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: transparent; /* Blender's playhead is just a line */
    opacity: 0;
    border-radius: 2px;
}

/* Playhead */
.timeline-handle {
    position: absolute;
    top: -8px; /* Align with track area */
    height: calc(100% + 16px); /* Full height grab area */
    background-color: transparent;
    cursor: pointer;
    z-index: 10;
}

/* No ::before content for handle */
.timeline-handle::before {
    content: none;
}

.timeline-playhead-label {
    position: absolute;
    top: 8px; /* Align with the top of the playhead line */
    left: 50%;
    transform: translate(calc(-50% - 2px), -100%);
    background-color: var(--accent);
    color: var(--grey-100);
    padding: 2px 5px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    z-index: 12;
    pointer-events: none;
}

/* Playhead icon styling */
.timeline-handle .lucide {
    position: absolute;
    left: 50%;
    color: var(--accent);
    pointer-events: none; /* Icon shouldn't capture events */
}

.timeline-playhead-line {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(calc(-50% - 2px));
    width: 2px;
    height: calc(100% - 16px);
    background-color: var(--accent);
}


/* Increased grab zone for the playhead */
.timeline-handle::after {
    content: "";
    position: absolute;
    top: -8px;
    left: -6px;
    width: 14px;
    height: calc(100% + 16px);
    background: transparent; /* Invisible but clickable */
    cursor: pointer;
}

/* Markers - styled as diamonds like keyframes */
.timeline-marker {
    position: absolute;
    top: auto;
    bottom: 7px; /* Vertically centered in track */
    width: 10px;
    height: 10px;
    background-color: var(--warning); /* Default keyframe color */
    transform: translateX(calc(-50% + 1px)) rotate(45deg);
    border: 1px solid var(--surface-2);
}

/* Ruler & Ticks */
.timeline-ruler {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-secondary);
}

/* Ticks */
.timeline-tick {
    position: absolute;
    top: 0;
    width: 1px;
    height: 35%;
    background-color: var(--grey-600);
    opacity: 0.8;
}

.timeline-tick-five {
    height: 45%;
    background-color: var(--grey-500);
}

.timeline-tick-ten {
    height: 55%;
    background-color: var(--grey-400);
}

.timeline-tick-major {
    height: 70%;
    background-color: var(--grey-300);
}

.timeline-label {
    position: absolute;
    top: -4px; /* Position above the track */
    transform: translate(-50%, -100%);
    white-space: nowrap;
    pointer-events: none;
    color: var(--text-secondary);
}

.timeline-range {
    position: absolute;
    top: 0;
    height: 100%;
    background-color: var(--accent, var(--primary));
    opacity: 0.15;
    pointer-events: none;
}

.timeline-range-handle {
    position: absolute;
    top: 0;
    width: 2px;
    height: 100%;
    background-color: var(--accent);
    cursor: ew-resize;
    z-index: 11;
}

.timeline-range-handle::before {
    content: none;
}

/* Light theme specific styles */
html:not(.dark-theme) .timeline-tick {
    background-color: var(--grey-400);
}

html:not(.dark-theme) .timeline-tick-five {
    background-color: var(--grey-500);
}

html:not(.dark-theme) .timeline-tick-ten {
    background-color: var(--grey-600);
}

html:not(.dark-theme) .timeline-tick-major {
    background-color: var(--grey-700);
}