/*
 * Timeline. Handfish industrial on neutral dark: grey chrome, so the only
 * colour on screen is the work itself, the programs in the monitor and
 * their frames running along the clips.
 */

:root {
    --tl-font-mono: 'Noto Sans Mono', 'Noto Sans Mono Blank';
    --tl-header-w: 148px;
    --tl-ruler-h: 30px;
    --tl-marker-h: 18px;
    --tl-video-h: 66px;
    --tl-audio-h: 50px;
    --tl-post-h: 34px;
    --tl-toolbar-h: 42px;
    --tl-playhead: var(--hf-text-bright);
    --tl-inout: color-mix(in oklab, var(--hf-blue) 22%, transparent);
    --tl-grid-bar: color-mix(in oklab, var(--hf-text-dim) 16%, transparent);
    --tl-grid-beat: color-mix(in oklab, var(--hf-text-dim) 6%, transparent);
    --tl-lane: var(--hf-bg-base);
    --tl-lane-alt: color-mix(in oklab, var(--hf-bg-base) 70%, var(--hf-bg-surface));
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    height: 100%;
    background: var(--hf-bg-base);
    color: var(--hf-text-normal);
    overflow: hidden;
}

body {
    font-family: var(--hf-font-family);
    font-size: var(--hf-size-sm);
}

button {
    font-family: inherit;
    color: inherit;
}

.tl-app {
    display: grid;
    height: 100vh;
    grid-template-columns: var(--tl-lib-w, 272px) minmax(320px, 1fr) var(--tl-insp-w, 392px);
    grid-template-rows: var(--hf-titlebar-height, 36px) minmax(180px, 1fr) 6px var(--tl-timeline-h, 44vh);
    grid-template-areas:
        "top top top"
        "lib stage insp"
        "split split split"
        "tl tl tl";
}

.tl-app[data-state="booting"] {
    visibility: hidden;
}

/* --- boot ---------------------------------------------------------------- */

.tl-boot {
    position: fixed;
    inset: 0;
    display: grid;
    place-content: center;
    gap: var(--hf-space-3);
    text-align: center;
    background: var(--hf-bg-base);
    z-index: var(--hf-z-modal, 500);
    transition: opacity 0.4s ease;
}

.tl-boot[hidden] {
    display: none;
}

.tl-boot.is-done {
    opacity: 0;
    pointer-events: none;
}

.tl-boot-mark {
    font-weight: 700;
    letter-spacing: 0.5em;
    font-size: var(--hf-size-2xl);
    color: var(--hf-text-bright);
}

.tl-boot-status {
    color: var(--hf-text-dim);
    font-size: var(--hf-size-sm);
}

.tl-boot-status.is-error {
    color: var(--hf-red);
    max-width: 48ch;
}

/* --- top bar ------------------------------------------------------------- */

.tl-topbar {
    grid-area: top;
    position: relative;
    z-index: 20;
    border-bottom: 1px solid var(--hf-bg-elevated);
}

.tl-wordmark {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    font-weight: 700;
    letter-spacing: 0.32em;
    color: var(--hf-text-bright);
}

.tl-wordmark svg {
    width: 1.25em;
    height: 1.25em;
}

.tl-project-name {
    display: flex;
    align-items: center;
    gap: var(--hf-space-2);
    min-width: 0;
}

.tl-project-name input {
    font: inherit;
    font-weight: 600;
    font-size: 0.875em;
    color: var(--hf-text-normal);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--hf-radius-sm);
    padding: 2px 6px;
    width: 22ch;
    text-align: center;
    text-overflow: ellipsis;
}

.tl-project-name input:hover {
    border-color: var(--hf-bg-muted);
}

.tl-project-name input:focus {
    outline: none;
    border-color: var(--hf-accent);
    background: var(--hf-bg-base);
}

.tl-save-state {
    font-size: var(--hf-size-xs);
    font-weight: 400;
    color: var(--hf-text-muted);
    white-space: nowrap;
}

.tl-save-state[data-state="error"] {
    color: var(--hf-red);
}

.tl-export-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 26px;
    padding: 0 12px;
    border: 0;
    border-radius: var(--hf-radius-sm);
    background: var(--hf-text-bright);
    color: var(--hf-bg-base);
    font: inherit;
    font-size: 0.8em;
    font-weight: 700;
    cursor: pointer;
}

.tl-export-btn:hover {
    background: var(--hf-accent-4);
}

.tl-export-btn:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: var(--hf-focus-ring-offset);
}

.tl-export-btn .hf-icon {
    color: inherit;
    font-size: 18px;
}

/* --- panels -------------------------------------------------------------- */

.tl-library,
.tl-inspector {
    min-height: 0;
    display: flex;
    flex-direction: column;
    background: var(--hf-bg-surface);
}

.tl-library {
    grid-area: lib;
    border-right: 1px solid var(--hf-bg-elevated);
}

.tl-inspector {
    grid-area: insp;
    border-left: 1px solid var(--hf-bg-elevated);
}

.tl-panel-tabs {
    display: flex;
    flex: none;
    gap: 2px;
    padding: 6px 6px 0;
    border-bottom: 1px solid var(--hf-bg-elevated);
    overflow-x: auto;
    scrollbar-width: none;
}

.tl-panel-tab {
    flex: none;
    padding: 6px 9px 7px;
    border: 0;
    border-bottom: 2px solid transparent;
    background: none;
    color: var(--hf-text-dim);
    font-size: var(--hf-size-xs);
    font-weight: 600;
    letter-spacing: var(--hf-tracking-wide);
    text-transform: var(--hf-text-transform);
    cursor: pointer;
}

.tl-panel-tab:hover {
    color: var(--hf-text-normal);
}

.tl-panel-tab[aria-selected="true"] {
    color: var(--hf-text-bright);
    border-bottom-color: var(--hf-text-bright);
}

.tl-panel-tab:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: -2px;
}

.tl-panel-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 10px;
    scrollbar-width: thin;
    scrollbar-color: var(--hf-bg-muted) transparent;
}

.tl-search {
    width: 100%;
    height: 30px;
    padding: 0 10px;
    margin-bottom: 10px;
    border: 1px solid var(--hf-bg-muted);
    border-radius: var(--hf-radius-sm);
    background: var(--hf-bg-base);
    color: var(--hf-text-normal);
    font: inherit;
}

.tl-search:focus {
    outline: none;
    border-color: var(--hf-accent);
}

.tl-hint {
    color: var(--hf-text-muted);
    font-size: var(--hf-size-xs);
    line-height: 1.5;
    margin: 0 0 10px;
}

/* library cards */

.tl-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
    gap: 8px;
}

.tl-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 0;
    border: 0;
    background: none;
    text-align: left;
    cursor: grab;
    color: var(--hf-text-normal);
}

.tl-card-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: var(--hf-radius-sm);
    overflow: hidden;
    background: color-mix(in oklab, var(--tl-tint, var(--hf-bg-muted)) 40%, var(--hf-bg-base));
    box-shadow: inset 0 -2px 0 var(--tl-tint, var(--hf-bg-muted));
}

.tl-card-thumb canvas,
.tl-card-thumb img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.tl-card-title {
    font-size: var(--hf-size-xs);
    font-weight: 600;
    line-height: 1.25;
    color: var(--hf-text-normal);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tl-card:hover .tl-card-title {
    color: var(--hf-text-bright);
}

.tl-card:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: 2px;
    border-radius: var(--hf-radius-sm);
}

.tl-card-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    padding: 1px 5px;
    border-radius: 3px;
    background: color-mix(in oklab, var(--hf-bg-base) 75%, transparent);
    color: var(--hf-text-normal);
    font-size: 10px;
    font-weight: 700;
}

.tl-rows {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tl-row {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 36px;
    padding: 6px 8px;
    border: 0;
    border-radius: var(--hf-radius-sm);
    background: var(--hf-bg-elevated);
    color: var(--hf-text-normal);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.tl-row:hover {
    background: var(--hf-bg-muted);
}

.tl-row[aria-current="true"] {
    box-shadow: inset 2px 0 0 var(--hf-text-bright);
}

.tl-row:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: 1px;
}

.tl-row-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tl-row-title {
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tl-row-sub {
    color: var(--hf-text-dim);
    font-size: var(--hf-size-xs);
}

.tl-row-swatch {
    flex: none;
    width: 28px;
    height: 20px;
    border-radius: 3px;
    background: var(--tl-swatch, var(--hf-bg-muted));
}

.tl-row .hf-icon {
    color: var(--hf-text-dim);
    font-size: 18px;
}

.tl-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 30px;
    padding: 0 12px;
    border: 1px solid var(--hf-bg-muted);
    border-radius: var(--hf-radius-sm);
    background: var(--hf-bg-elevated);
    color: var(--hf-text-normal);
    font: inherit;
    font-size: var(--hf-size-xs);
    font-weight: 600;
    cursor: pointer;
}

.tl-button:hover {
    background: var(--hf-bg-muted);
    color: var(--hf-text-bright);
}

.tl-button:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: var(--hf-focus-ring-offset);
}

.tl-button.is-primary {
    background: var(--hf-text-bright);
    border-color: var(--hf-text-bright);
    color: var(--hf-bg-base);
}

.tl-button.is-primary:hover {
    background: var(--hf-accent-4);
}

.tl-button.is-danger:hover {
    color: var(--hf-red);
    border-color: var(--hf-red);
}

.tl-button .hf-icon {
    color: inherit;
    font-size: 16px;
}

.tl-button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

/* --- monitor ------------------------------------------------------------- */

.tl-stage {
    grid-area: stage;
    position: relative;
    min-width: 0;
    min-height: 0;
    background: var(--hf-bg-base);
}

.tl-monitor {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-rows: minmax(0, 1fr) auto;
}

.tl-monitor-frame {
    position: relative;
    min-height: 0;
    display: grid;
    place-items: center;
    padding: 14px 14px 6px;
}

.tl-monitor-canvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
    background: var(--hf-bg-base);
    box-shadow: 0 0 0 1px var(--hf-bg-elevated), 0 18px 60px color-mix(in oklab, var(--hf-bg-base) 60%, transparent);
}

.tl-monitor-overlay {
    position: absolute;
    inset: 14px 14px 6px;
    pointer-events: none;
}

.tl-monitor-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 3px 8px;
    border-radius: var(--hf-radius-sm);
    background: color-mix(in oklab, var(--hf-bg-base) 70%, transparent);
    color: var(--hf-text-normal);
    font-size: var(--hf-size-xs);
    font-weight: 600;
}

.tl-monitor-badge[hidden] {
    display: none;
}

.tl-monitor-compiling {
    left: auto;
    right: 10px;
    color: var(--hf-text-dim);
}

.tl-lanes-empty {
    position: absolute;
    left: 24px;
    top: 50%;
    translate: 0 -50%;
    max-width: 52ch;
    color: var(--hf-text-dim);
    line-height: 1.6;
    pointer-events: none;
    z-index: 2;
}

.tl-lanes-empty strong {
    display: block;
    color: var(--hf-text-normal);
}

.tl-narrow {
    display: none;
}

@media (max-width: 760px) {
    .tl-narrow {
        position: fixed;
        inset: 0;
        display: grid;
        place-content: center;
        gap: 10px;
        padding: 24px 16px;
        text-align: center;
        background: var(--hf-bg-base);
        color: var(--hf-text-normal);
        z-index: var(--hf-z-modal, 500);
        line-height: 1.6;
    }

    .tl-narrow strong {
        letter-spacing: 0.32em;
        color: var(--hf-text-bright);
    }
}

.tl-monitor-bar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 6px 14px 10px;
    min-width: 0;
}

.tl-timecode {
    font-family: var(--tl-font-mono);
    font-variant-numeric: tabular-nums;
    font-size: 22px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--hf-text-bright);
    white-space: nowrap;
}

.tl-timecode-sub {
    font-family: var(--tl-font-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--hf-size-xs);
    color: var(--hf-text-dim);
    white-space: nowrap;
}

.tl-spacer {
    flex: 1;
}

.tl-monitor-bar .tl-timecode-sub {
    display: flex;
    gap: 14px;
    min-width: 0;
    overflow: hidden;
}

/* audio meters: what audio() sees right now */
.tl-meters {
    display: grid;
    grid-auto-flow: column;
    gap: 10px;
    align-items: end;
}

.tl-meter-group {
    display: grid;
    grid-template-rows: 26px auto;
    gap: 3px;
    justify-items: center;
}

.tl-meter-bars {
    display: flex;
    gap: 2px;
    align-items: end;
    height: 26px;
}

.tl-meter-bar {
    width: 5px;
    height: 100%;
    border-radius: 1px;
    background: var(--hf-bg-elevated);
    position: relative;
    overflow: hidden;
}

.tl-meter-bar::after {
    content: '';
    position: absolute;
    inset: auto 0 0 0;
    height: calc(var(--level, 0) * 100%);
    background: var(--hf-text-normal);
}

.tl-meter-bar[data-band="low"]::after { background: var(--hf-red); }
.tl-meter-bar[data-band="mid"]::after { background: var(--hf-yellow); }
.tl-meter-bar[data-band="high"]::after { background: var(--hf-blue); }

.tl-meter-label {
    font-size: 10px;
    color: var(--hf-text-muted);
    max-width: 7ch;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tl-select {
    height: 26px;
    padding: 0 6px;
    border: 1px solid var(--hf-bg-muted);
    border-radius: var(--hf-radius-sm);
    background: var(--hf-bg-surface);
    color: var(--hf-text-normal);
    font: inherit;
    font-size: var(--hf-size-xs);
}

/* --- splitter ------------------------------------------------------------ */

.tl-splitter {
    grid-area: split;
    cursor: row-resize;
    background: var(--hf-bg-surface);
    border-top: 1px solid var(--hf-bg-elevated);
    border-bottom: 1px solid var(--hf-bg-elevated);
}

.tl-splitter:hover,
.tl-splitter:focus-visible {
    background: var(--hf-bg-muted);
    outline: none;
}

/* --- timeline ------------------------------------------------------------ */

.tl-timeline {
    grid-area: tl;
    display: grid;
    grid-template-rows: var(--tl-toolbar-h) minmax(0, 1fr);
    min-height: 0;
    background: var(--hf-bg-surface);
}

.tl-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 10px;
    border-bottom: 1px solid var(--hf-bg-elevated);
    min-width: 0;
    overflow: hidden;
}

.tl-tool {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 28px;
    padding: 0 6px;
    border: 1px solid transparent;
    border-radius: var(--hf-radius-sm);
    background: none;
    color: var(--hf-text-dim);
    cursor: pointer;
    font: inherit;
    font-size: var(--hf-size-xs);
    font-weight: 600;
}

.tl-tool:hover {
    background: var(--hf-bg-elevated);
    color: var(--hf-text-bright);
}

.tl-tool[aria-pressed="true"] {
    color: var(--hf-text-bright);
    background: var(--hf-bg-muted);
}

.tl-tool:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: -1px;
}

.tl-tool .hf-icon {
    color: inherit;
    font-size: 20px;
}

.tl-tool.is-play .hf-icon {
    font-size: 26px;
}

.tl-toolbar-sep {
    width: 1px;
    height: 20px;
    background: var(--hf-bg-muted);
    margin: 0 4px;
}

.tl-zoom {
    width: 110px;
    accent-color: var(--hf-text-normal);
}

.tl-toolbar .tl-timecode {
    font-size: 15px;
    min-width: 11ch;
}

.tl-body {
    position: relative;
    display: grid;
    grid-template-columns: var(--tl-header-w) minmax(0, 1fr);
    min-height: 0;
    overflow: hidden;
}

.tl-headers {
    position: relative;
    overflow: hidden;
    background: var(--hf-bg-surface);
    border-right: 1px solid var(--hf-bg-elevated);
    z-index: 3;
}

.tl-headers-inner {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
}

.tl-scroll {
    position: relative;
    overflow: auto;
    min-width: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--hf-bg-muted) transparent;
    overscroll-behavior: contain;
}

.tl-content {
    position: relative;
}

.tl-ruler {
    position: sticky;
    top: 0;
    height: var(--tl-ruler-h);
    background: var(--hf-bg-surface);
    border-bottom: 1px solid var(--hf-bg-elevated);
    z-index: 4;
    cursor: ew-resize;
}

.tl-ruler canvas {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
}

.tl-markers {
    position: sticky;
    top: var(--tl-ruler-h);
    height: var(--tl-marker-h);
    background: var(--hf-bg-surface);
    border-bottom: 1px solid var(--hf-bg-elevated);
    z-index: 4;
}

.tl-marker {
    position: absolute;
    top: 2px;
    height: 14px;
    padding: 0 5px 0 7px;
    border: 0;
    border-radius: 0 3px 3px 0;
    background: color-mix(in oklab, var(--hf-yellow) 80%, transparent);
    color: var(--hf-bg-base);
    font: inherit;
    font-size: 10px;
    font-weight: 700;
    line-height: 14px;
    white-space: nowrap;
    cursor: pointer;
}

.tl-marker::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: -4px;
    width: 2px;
    background: var(--hf-yellow);
}

.tl-marker[aria-selected="true"] {
    background: var(--hf-text-bright);
}

.tl-lanes {
    position: relative;
}

.tl-lane {
    position: relative;
    border-bottom: 1px solid var(--hf-bg-surface);
    background: var(--tl-lane);
}

.tl-lane.is-video { height: var(--tl-video-h); }
.tl-lane.is-audio { height: var(--tl-audio-h); background: var(--tl-lane-alt); }
.tl-lane.is-post { height: var(--tl-post-h); background: var(--hf-bg-surface); }
.tl-lane.is-target { box-shadow: inset 3px 0 0 var(--hf-text-dim); }
.tl-lane.is-hidden-track > .tl-clip { opacity: 0.35; }
.tl-lane.is-drop { background: color-mix(in oklab, var(--hf-text-bright) 8%, var(--tl-lane)); }

.tl-grid {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        repeating-linear-gradient(90deg, var(--tl-grid-bar) 0 1px, transparent 1px var(--tl-bar-px, 64px)),
        repeating-linear-gradient(90deg, var(--tl-grid-beat) 0 1px, transparent 1px var(--tl-beat-px, 16px));
    background-position-x: var(--tl-grid-x, 0);
}

.tl-inout {
    position: absolute;
    top: 0;
    bottom: 0;
    background: var(--tl-inout);
    pointer-events: none;
    z-index: 1;
}

.tl-inout-dim {
    position: absolute;
    top: 0;
    bottom: 0;
    background: color-mix(in oklab, var(--hf-bg-base) 45%, transparent);
    pointer-events: none;
    z-index: 2;
}

.tl-seq-end {
    position: absolute;
    top: 0;
    bottom: 0;
    background: repeating-linear-gradient(135deg,
        color-mix(in oklab, var(--hf-bg-base) 80%, transparent) 0 6px,
        color-mix(in oklab, var(--hf-bg-surface) 80%, transparent) 6px 12px);
    pointer-events: none;
    z-index: 2;
}

.tl-playhead {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 0;
    border-left: 1px solid var(--tl-playhead);
    pointer-events: none;
    z-index: 6;
}

.tl-playhead-cap {
    position: sticky;
    top: 0;
    display: block;
    width: 13px;
    height: 16px;
    margin-left: -7px;
    background: var(--tl-playhead);
    clip-path: polygon(0 0, 100% 0, 100% 55%, 50% 100%, 0 55%);
    pointer-events: auto;
    cursor: ew-resize;
}

.tl-snapline {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 0;
    border-left: 1px dashed var(--hf-yellow);
    pointer-events: none;
    z-index: 7;
}

.tl-snapline[hidden] {
    display: none;
}

.tl-marquee {
    position: absolute;
    border: 1px solid var(--hf-text-dim);
    background: color-mix(in oklab, var(--hf-text-bright) 8%, transparent);
    pointer-events: none;
    z-index: 8;
}

/* clips */

.tl-clip {
    --tint: var(--hf-text-dim);
    position: absolute;
    top: 3px;
    bottom: 3px;
    border-radius: 4px;
    overflow: hidden;
    background: color-mix(in oklab, var(--tint) 30%, var(--hf-bg-elevated));
    box-shadow: inset 0 2px 0 var(--tint), inset 0 0 0 1px color-mix(in oklab, var(--tint) 45%, transparent);
    cursor: grab;
    user-select: none;
    z-index: 3;
}

.tl-clip:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: 1px;
}

.tl-clip.is-selected {
    z-index: 4;
}

.tl-clip.is-selected::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid var(--hf-text-bright);
    border-radius: 4px;
    pointer-events: none;
    z-index: 3;
}

.tl-clip.is-dragging {
    opacity: 0.85;
    cursor: grabbing;
    z-index: 9;
}

.tl-clip.is-error {
    background: repeating-linear-gradient(135deg,
        color-mix(in oklab, var(--hf-red) 30%, var(--hf-bg-elevated)) 0 8px,
        var(--hf-bg-elevated) 8px 16px);
}

.tl-clip-strip {
    position: absolute;
    inset: 2px 0 0 0;
    width: 100%;
    height: calc(100% - 2px);
    pointer-events: none;
}

.tl-clip-label {
    position: absolute;
    left: 6px;
    right: 6px;
    top: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
    pointer-events: none;
    min-width: 0;
}

.tl-clip-name {
    padding: 1px 5px;
    border-radius: 3px;
    background: color-mix(in oklab, var(--hf-bg-base) 72%, transparent);
    color: var(--hf-text-bright);
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.tl-clip-tag {
    flex: none;
    padding: 1px 4px;
    border-radius: 3px;
    background: color-mix(in oklab, var(--hf-bg-base) 72%, transparent);
    color: var(--hf-text-dim);
    font-size: 10px;
    font-weight: 600;
}

.tl-clip-tag .hf-icon {
    font-size: 11px;
    color: inherit;
    vertical-align: -1px;
}

.tl-clip-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 7px;
    cursor: ew-resize;
    z-index: 2;
}

.tl-clip-handle.is-start { left: 0; }
.tl-clip-handle.is-end { right: 0; }

.tl-clip:hover .tl-clip-handle {
    background: color-mix(in oklab, var(--hf-text-bright) 22%, transparent);
}

.tl-clip.is-audio {
    background: color-mix(in oklab, var(--hf-green) 18%, var(--hf-bg-elevated));
    --tint: var(--hf-green);
}

.tl-clip.is-sequence {
    background:
        repeating-linear-gradient(90deg, color-mix(in oklab, var(--tint) 20%, transparent) 0 2px, transparent 2px 10px),
        color-mix(in oklab, var(--tint) 24%, var(--hf-bg-elevated));
}

.tl-clip-wave {
    position: absolute;
    inset: 16px 0 2px 0;
    width: 100%;
    height: calc(100% - 18px);
    pointer-events: none;
}

/* transitions */

.tl-transition {
    position: absolute;
    top: 50%;
    height: 26px;
    translate: 0 -50%;
    min-width: 8px;
    border: 0;
    border-radius: 4px;
    padding: 0;
    background:
        linear-gradient(90deg, color-mix(in oklab, var(--a, var(--hf-bg-muted)) 85%, transparent), color-mix(in oklab, var(--b, var(--hf-bg-muted)) 85%, transparent));
    box-shadow: 0 0 0 1px var(--hf-bg-base), inset 0 0 0 1px color-mix(in oklab, var(--hf-text-bright) 40%, transparent);
    color: var(--hf-text-bright);
    font: inherit;
    font-size: 10px;
    font-weight: 700;
    cursor: pointer;
    z-index: 5;
    overflow: hidden;
    white-space: nowrap;
}

.tl-transition::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top right, transparent calc(50% - 1px), color-mix(in oklab, var(--hf-text-bright) 70%, transparent) 50%, transparent calc(50% + 1px));
    opacity: 0.7;
}

.tl-transition span {
    position: relative;
    padding: 0 4px;
    text-shadow: 0 1px 2px var(--hf-bg-base);
}

.tl-transition.is-selected {
    box-shadow: 0 0 0 2px var(--hf-text-bright);
}

.tl-transition:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: 2px;
}

.tl-transition-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 6px;
    cursor: ew-resize;
    z-index: 1;
}

.tl-transition-handle.is-start { left: 0; }
.tl-transition-handle.is-end { right: 0; }

/* post lane */

.tl-post {
    position: absolute;
    top: 4px;
    bottom: 4px;
    left: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 10px;
    border: 0;
    border-radius: 4px;
    background: linear-gradient(90deg,
        color-mix(in oklab, var(--hf-blue) 26%, var(--hf-bg-elevated)),
        color-mix(in oklab, var(--hf-red) 22%, var(--hf-bg-elevated)) 50%,
        color-mix(in oklab, var(--hf-yellow) 22%, var(--hf-bg-elevated)));
    color: var(--hf-text-bright);
    font: inherit;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
}

.tl-post .hf-icon {
    font-size: 16px;
    color: inherit;
}

.tl-post-chain {
    font-weight: 500;
    color: var(--hf-text-normal);
    overflow: hidden;
    text-overflow: ellipsis;
}

.tl-post.is-off {
    background: var(--hf-bg-elevated);
    color: var(--hf-text-dim);
}

.tl-post.is-selected {
    box-shadow: inset 0 0 0 2px var(--hf-text-bright);
}

.tl-post:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: 1px;
}

/* track headers */

.tl-header-spacer {
    height: calc(var(--tl-ruler-h) + var(--tl-marker-h));
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 6px;
    border-bottom: 1px solid var(--hf-bg-elevated);
}

.tl-track-header {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 0 4px 0 8px;
    border-bottom: 1px solid var(--hf-bg-base);
    background: var(--hf-bg-surface);
    cursor: pointer;
}

.tl-track-header.is-video { height: var(--tl-video-h); }
.tl-track-header.is-audio { height: var(--tl-audio-h); }
.tl-track-header.is-post { height: var(--tl-post-h); }

.tl-track-header.is-target {
    box-shadow: inset 3px 0 0 var(--hf-text-bright);
}

.tl-track-name {
    flex: 1;
    min-width: 0;
    font-size: var(--hf-size-xs);
    font-weight: 700;
    color: var(--hf-text-normal);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tl-track-sub {
    display: block;
    font-weight: 400;
    font-size: 10px;
    color: var(--hf-text-muted);
}

.tl-track-btn {
    display: inline-grid;
    place-items: center;
    width: 22px;
    height: 22px;
    padding: 0;
    border: 0;
    border-radius: 3px;
    background: none;
    color: var(--hf-text-muted);
    cursor: pointer;
    font-size: 10px;
    font-weight: 700;
}

.tl-track-btn:hover {
    color: var(--hf-text-bright);
    background: var(--hf-bg-elevated);
}

.tl-track-btn[aria-pressed="true"] {
    color: var(--hf-bg-base);
    background: var(--hf-text-normal);
}

.tl-track-btn[data-kind="solo"][aria-pressed="true"] {
    background: var(--hf-yellow);
}

.tl-track-btn[data-kind="mute"][aria-pressed="true"] {
    background: var(--hf-red);
}

.tl-track-btn .hf-icon {
    font-size: 15px;
    color: inherit;
}

.tl-track-btn:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
}

/* --- inspector ----------------------------------------------------------- */

.tl-insp-head {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 12px 10px;
    border-bottom: 1px solid var(--hf-bg-elevated);
}

.tl-insp-kind {
    flex: none;
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: var(--hf-radius-sm);
    background: color-mix(in oklab, var(--tint, var(--hf-bg-muted)) 45%, var(--hf-bg-elevated));
}

.tl-insp-kind .hf-icon {
    color: var(--hf-text-bright);
    font-size: 18px;
}

.tl-insp-title {
    flex: 1;
    min-width: 0;
    font: inherit;
    font-size: var(--hf-size-md, 15px);
    font-weight: 700;
    color: var(--hf-text-bright);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--hf-radius-sm);
    padding: 3px 6px;
}

.tl-insp-title:hover {
    border-color: var(--hf-bg-muted);
}

.tl-insp-title:focus {
    outline: none;
    border-color: var(--hf-accent);
    background: var(--hf-bg-base);
}

.tl-insp-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    scrollbar-width: thin;
    scrollbar-color: var(--hf-bg-muted) transparent;
}

.tl-field-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
    gap: 8px 10px;
}

.tl-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.tl-field > span {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: var(--hf-tracking-wide);
    color: var(--hf-text-dim);
    text-transform: var(--hf-text-transform);
}

.tl-field input,
.tl-field select {
    width: 100%;
    height: 28px;
    padding: 0 7px;
    border: 1px solid var(--hf-bg-muted);
    border-radius: var(--hf-radius-sm);
    background: var(--hf-bg-base);
    color: var(--hf-text-normal);
    font: inherit;
    font-size: var(--hf-size-xs);
}

.tl-field input.is-time {
    font-family: var(--tl-font-mono);
    font-variant-numeric: tabular-nums;
}

.tl-field input:focus,
.tl-field select:focus {
    outline: none;
    border-color: var(--hf-accent);
}

.tl-field input[type="range"] {
    padding: 0;
    height: 28px;
    border: 0;
    background: none;
    accent-color: var(--hf-text-normal);
}

.tl-field input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--hf-text-normal);
}

.tl-section-title {
    margin: 0 0 6px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: var(--hf-tracking-wide);
    color: var(--hf-text-dim);
    text-transform: var(--hf-text-transform-heading, uppercase);
}

.tl-insp-body > * {
    flex-shrink: 0;
}

.tl-editor-wrap {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tl-editor {
    display: block;
    height: clamp(220px, 34vh, 560px);
    border-radius: var(--hf-radius-sm);
    overflow: hidden;
    border: 1px solid var(--hf-bg-elevated);
    --code-editor-font: var(--tl-font-mono);
    --code-editor-font-size: 12px;
    --code-editor-line-height: 1.55;
}

.tl-editor-status {
    min-height: 18px;
    font-family: var(--tl-font-mono);
    font-size: 11px;
    line-height: 1.45;
    color: var(--hf-text-dim);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.tl-editor-status[data-state="error"] {
    color: var(--hf-red);
}

.tl-editor-status[data-state="ok"] {
    color: var(--hf-green);
}

.tl-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.tl-chip {
    padding: 3px 8px;
    border: 1px solid var(--hf-bg-muted);
    border-radius: 999px;
    background: var(--hf-bg-base);
    color: var(--hf-text-normal);
    font: inherit;
    font-size: 11px;
    cursor: pointer;
}

.tl-chip:hover {
    border-color: var(--hf-text-dim);
    color: var(--hf-text-bright);
}

.tl-chip code {
    font-family: var(--tl-font-mono);
    font-size: 10px;
    color: var(--hf-text-dim);
}

.tl-empty {
    padding: 28px 16px;
    color: var(--hf-text-dim);
    text-align: center;
    line-height: 1.6;
}

.tl-empty strong {
    display: block;
    color: var(--hf-text-normal);
    font-size: var(--hf-size-sm);
    margin-bottom: 4px;
}

.tl-kbd-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 12px;
    font-size: var(--hf-size-xs);
    color: var(--hf-text-dim);
}

.tl-kbd-list kbd {
    font-family: var(--tl-font-mono);
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 3px;
    background: var(--hf-bg-elevated);
    color: var(--hf-text-normal);
    white-space: nowrap;
    justify-self: start;
}

/* --- context menu ---------------------------------------------------------- */

.tl-context-menu {
    position: fixed;
    min-width: 200px;
    z-index: var(--hf-z-dropdown, 100);
}

.tl-context-menu .hf-menu-item {
    width: 100%;
    border: 0;
    font: inherit;
    text-align: left;
}

/* --- dialogs --------------------------------------------------------------- */

.tl-dialog {
    width: min(620px, 92vw);
}

.tl-dialog .tl-field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.tl-dialog .hf-dialog-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.tl-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 0 1.5rem 1.25rem;
}

.tl-progress {
    position: relative;
    height: 6px;
    border-radius: 3px;
    background: var(--hf-bg-muted);
    overflow: hidden;
}

.tl-progress > div {
    position: absolute;
    inset: 0 auto 0 0;
    width: calc(var(--p, 0) * 100%);
    background: var(--hf-text-bright);
    transition: width 0.15s linear;
}

.tl-export-preview {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--hf-radius-sm);
    background: var(--hf-bg-base);
    object-fit: contain;
}

.tl-export-stats {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    font-family: var(--tl-font-mono);
    font-size: 11px;
    color: var(--hf-text-dim);
}

.tl-export-note {
    font-size: var(--hf-size-xs);
    color: var(--hf-text-dim);
    line-height: 1.5;
}

.tl-export-note[data-state="error"] {
    color: var(--hf-red);
}

.tl-dropzone {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    background: color-mix(in oklab, var(--hf-bg-base) 70%, transparent);
    color: var(--hf-text-bright);
    font-size: var(--hf-size-lg);
    font-weight: 700;
    z-index: var(--hf-z-modal, 500);
    pointer-events: none;
}

.tl-dropzone[hidden] {
    display: none;
}

@media (prefers-reduced-motion: reduce) {
    .tl-boot,
    .tl-progress > div {
        transition: none;
    }
}

@media (max-width: 1100px) {
    .tl-app {
        grid-template-columns: 220px minmax(280px, 1fr) 320px;
    }
}