/* Material Symbols ligature class — write the icon name as the element's
     text content, the font renders it as a glyph. */
  .micon {
    font-family: 'Material Symbols Outlined';
    font-weight: 400;
    font-style: normal;
    font-size: 18px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  }

  html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: #1a1a1a;
    color: #ddd;
    font-family: -apple-system, system-ui, sans-serif;
    overflow: hidden;
    user-select: none;
  }

  /* ---------- top toolbar ---------- */
  #toolbar {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 100000;
    display: flex;
    gap: 4px;
  }
  #toolbar button {
    background: #2a2a2a;
    border: 1px solid #3a3a3a;
    color: #ddd;
    
    padding: 4px 10px;
    font-size: 11px;
    cursor: pointer;
    font-family: inherit;
  }
  #toolbar button:hover { background: #353535; }

  /* infoBar — lives inside the toolbar's flex row, after the +Viewer
     button. A spinner that activates while proxy builds are in flight,
     followed by a persistent cache summary. The spinner is always
     present; .active toggles between idle (dim, still) and busy
     (full opacity, rotating). */
  #infoBar {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 12px;
    font-size: 11px;
    color: #888;
    line-height: 1;
    white-space: nowrap;
    pointer-events: none;   /* read-only for now; later this becomes the notifications area */
  }
  #infoBar .info-spinner {
    color: #79c;
    opacity: 0.3;
    transition: opacity 0.15s ease-out;
    flex: 0 0 auto;
  }
  #infoBar .info-spinner.active {
    opacity: 1;
    animation: infoBarSpin 0.9s linear infinite;
  }
  @keyframes infoBarSpin {
    to { transform: rotate(360deg); }
  }
  #infoBar .info-cache {
    color: #888;
  }
  #infoBar .info-cache strong {
    color: #bbb;
    font-weight: normal;
  }

  /* ---------- floating panels ---------- */
  .panel {
    position: absolute;
    background: #222;
    overflow: hidden;
    /* --accent is set per-viewer (and fallback for non-viewer panels).
       Inactive: dim outline. Active: full-strength accent. */
    --accent: #888;
    outline: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
    transition: outline-color 80ms;
  }
  .panel.active { outline-color: var(--accent); }
  .panel .titlebar {
    height: 22px;
    background: #333;
    color: #aaa;
    font-size: 11px;
    padding: 0 8px;
    line-height: 22px;
    cursor: grab;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .panel .titlebar.dragging { cursor: grabbing; }
  .panel .title {
    flex: 1 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
  }
  .panel .meta {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 10px;
    color: #6b6;
    flex: 0 0 auto;
    white-space: nowrap;
  }
  .panel .meta .loop-mark { color: #ffd000; }
  .panel .titlebar .panel-close {
    cursor: pointer;
    color: #888;
    padding: 0 2px;
    flex: 0 0 auto;
  }
  .panel .titlebar .panel-close:hover { color: #c66; }

  .panel .titlebar .fps-mini {
    width: 50px;
    background: #1a1a1a;
    border: 1px solid #333;
    color: #ddd;
    outline: none;
    
    padding: 1px 3px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 10px;
    flex: 0 0 auto;
  }

  .panel .titlebar .aspect-mini {
    background: #1a1a1a;
    border: 1px solid #333;
    color: #ddd;
    outline: none;
    padding: 1px 3px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 10px;
    flex: 0 0 auto;
    cursor: pointer;
  }

  .panel .titlebar .viewer-export-btn {
    background: #2a2a2a;
    border: 1px solid #444;
    color: #ddd;
    padding: 2px 8px;
    font: inherit;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    flex: 0 0 auto;
  }
  .panel .titlebar .viewer-export-btn:hover { background: #3a3a3a; border-color: #555; }
  .panel .titlebar .viewer-export-btn:disabled { opacity: 0.4; cursor: not-allowed; }

  /* ---------- viewer ---------- */
  .viewer-panel {
    /* Explicit initial size: required because resize:both only kicks in
       once the element has been user-sized; without an initial width the
       panel auto-sizes to content (canvas max-width 100% → panel tries to
       be canvas-native-wide → glued to viewport edge until the user drags
       the resize handle). */
    width: 1340px;
    height: 850px;
    resize: both;
    overflow: hidden;
    min-width: 320px;
    min-height: 240px;
    display: flex;
    flex-direction: column;
  }
  /* titlebar + viewer-ctrl are flex: 0 0 auto by default, so the stage
     expands to fill remaining vertical space. */
  .viewer-stage {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;     /* allow children to shrink below content size */
    background: #000;  /* shows through letterbox bars around the canvas */
  }
  /* Canvas-area wraps the canvas and centers it. Flex-grow takes leftover
     stage height; the timeline strip below it is flex-fixed. */
  .viewer-canvas-area {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    overflow: hidden;
    background: #101010;
  }
  .viewer-panel canvas {
    display: block;
    /* Drawing buffer is project-resolution (e.g. 1920×1080); intrinsic
       aspect ratio comes from the width/height HTML attributes. max-* +
       object-fit:contain lets the browser scale the canvas down to fit
       the canvas-area while preserving aspect — same shape every NLE
       does to fit a project frame inside a viewer panel. */
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
  }
  .viewer-timeline {
    position: relative;
    height: 13px;
    flex: 0 0 13px;
    width: 100%;
    background: #111;
    display: flex;
    overflow: hidden;
    cursor: col-resize;
    user-select: none;
    margin-top: 5px;
  }
  /* During an active scrub the cursor should stay col-resize even if it
     briefly leaves the timeline strip. Set on <body> while scrubbing. */
  body.scrubbing, body.scrubbing * { cursor: col-resize !important; }
  .viewer-timeline .clip-block {
    height: 10px;
    flex-shrink: 0;
    box-shadow: inset -1px 0 0 #000;
  }
  /* Loop indicator: bright yellow on the leading and trailing edges of the
     looped clip's block. Inset box-shadows so they don't affect layout —
     narrow clips don't lose their fill colour. */
  .viewer-timeline .clip-block.loop {
    box-shadow:
      inset 2px 0 0 #ffd000,
      inset -2px 0 0 #ffd000;
  }
  .viewer-timeline .cache-strip {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    pointer-events: none;
  }
  .viewer-timeline .cache-seg {
    position: absolute;
    top: 0;
    bottom: 0;
    background: #028f1a;
  }
  .viewer-timeline .cache-seg.partial {
    background: repeating-linear-gradient(
      90deg,
      #028f1a 0 2px,
      transparent 2px 4px
    );
  }
  .viewer-timeline .playhead {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: #fff;
    pointer-events: none;
    transform: translateX(0px);
    will-change: transform;
  }
  .viewer-timeline .playhead.hidden { display: none; }
  .viewer-ctrl {
    display: flex;
    gap: 12px;
    padding: 6px 10px;
    background: #2a2a2a;
    border-bottom: 1px solid #1a1a1a;
    font-size: 11px;
    color: #888;
    align-items: center;
  }
  .viewer-ctrl label {
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 9px;
  }
  .viewer-ctrl select {
    background: #1a1a1a;
    border: 1px solid #333;
    color: #ddd;
    
    padding: 2px 4px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 11px;
  }
  .viewer-ctrl select:focus { outline: none; }
  .viewer-ctrl .ctrl-readonly {
    color: #888;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 11px;
    padding: 2px 4px;
    border: 1px solid transparent;
  }
  .viewer-ctrl .mute-btn,
  .viewer-ctrl .loop-btn {
    background: #1a1a1a;
    border: 1px solid #333;
    color: #ddd;
    padding: 2px 5px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  /* The loop button kicks the right-aligned group off the auto margin. */
  .viewer-ctrl .loop-btn { margin-left: auto; }
  .viewer-ctrl .mute-btn { margin-left: 4px; }
  .viewer-ctrl .mute-btn:hover,
  .viewer-ctrl .loop-btn:hover { border-color: #555; }
  .viewer-ctrl .mute-btn.muted {
    color: #c66;
    border-color: #553;
  }
  .viewer-ctrl .loop-btn.loop-off {
    color: #888;
    border-color: #333;
  }

  /* ---------- toast ---------- */
  .toast {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(200, 60, 60, 0.95);
    color: #fff;
    padding: 8px 16px;
    
    font-size: 13px;
    z-index: 10000;
  }

  /* ---------- notes ---------- */
  #notes {
    position: fixed;
    bottom: 12px;
    left: 12px;
    width: 280px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid #2a2a2a;
    
    padding: 10px 12px;
    font-size: 11px;
    line-height: 1.5;
    color: #888;
    pointer-events: none;
  }
  #notes h4 {
    margin: 0 0 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #aaa;
  }
  #notes h4:not(:first-child) { margin-top: 10px; }
  #notes ul { margin: 0; padding: 0; list-style: none; }
  #notes li { padding: 1px 0; }

  /* ---------- Timeline ---------- */
  /* Wide panel with a GL canvas inside. No track headers yet — the canvas
     draws the ruler band, audio lanes, and clip boxes itself. */
  .timeline-panel {
    width: 720px;
    height: 500px;
    min-height: 160px;
    min-width: 360px;
    resize: both;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }
  .timeline-stage {
    flex: 1 1 auto;
    min-height: 0;
    background: #101010;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }
  .timeline-canvas {
    display: block;
    width: 100%;
    flex: 1 1 auto;
    min-height: 0;
    background: #101010;
  }

  /* ---------- export modal ---------- */
  /* Full-page backdrop captures clicks while exporting. The modal is
     centered on top. Both are display:none until .open is added. */
  #export-backdrop {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: none;
  }
  #export-backdrop.open { display: block; }

  #export-modal {
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 16px 18px 14px;
    z-index: 1001;
    color: #ccc;
    font-size: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    display: none;
    min-width: 520px;
  }
  #export-modal.open { display: block; }

  #export-modal h3 {
    margin: 0 0 10px;
    font-size: 13px;
    font-weight: normal;
    color: #ddd;
  }

  #export-progress {
    height: 8px;
    width: 100%;
    background: #2a2a2a;
    border: 1px solid #333;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 6px;
    box-sizing: border-box;
  }
  #export-progress-bar {
    height: 100%;
    background: #4a8;
    width: 0%;
  }

  #export-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
  }
  #export-progress-label {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 11px;
    color: #aaa;
  }
  #export-status {
    font-size: 11px;
    color: #888;
    margin-top: 4px;
    min-height: 14px;
  }
  #export-cancel {
    background: #2a2a2a;
    border: 1px solid #444;
    color: #ccc;
    padding: 4px 12px;
    cursor: pointer;
    font-size: 11px;
  }
  #export-cancel:hover:not(:disabled) { background: #333; }
  #export-cancel:disabled {
    opacity: 0.5;
    cursor: default;
  }

  /* EDL panel export button — small button alongside the fps input.
     Matches the #toolbar buttons (font, padding, colours). align-self
     stops the button from stretching to the titlebar's full height,
     which is what made it look giant before. */
  .titlebar .export-btn {
    background: #2a2a2a;
    border: 1px solid #3a3a3a;
    color: #ddd;
    padding: 4px 10px;
    font-size: 11px;
    font-family: inherit;
    cursor: pointer;
    margin-left: 4px;
    align-self: center;
  }
  .titlebar .export-btn:hover { background: #353535; }
  .titlebar .export-btn:disabled {
    opacity: 0.4;
    cursor: default;
  }

  /* ---------- Property panel ---------- */
  .prop-panel {
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 4px;
    color: #ddd;
    font-size: 12px;
  }
  .prop-panel-bar {
    display: flex;
    align-items: center;
    padding: 6px 10px;
    background: #222;
    border-bottom: 1px solid #333;
    cursor: grab;
    user-select: none;
  }
  .prop-panel-bar.dragging { cursor: grabbing; }
  .prop-panel-title {
    flex: 1;
    font-weight: 600;
    color: #ddd;
    letter-spacing: 0.02em;
  }
  .prop-panel-chev {
    background: transparent;
    border: none;
    color: #888;
    cursor: pointer;
    padding: 0 2px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .prop-panel-chev:hover { color: #ddd; }
  .prop-panel-chev .micon {
    font-size: 18px;
    line-height: 1;
    transition: transform 220ms ease;
  }
  .prop-panel.collapsed .prop-panel-bar { border-bottom-color: transparent; }
  /* Body wrapper. Plain scrollable block; height comes either from the
     CSS default below or from inline setBodyHeight() in proppanel.js
     (used at boot to align prop bottom with the viewer's bottom).
     Collapse is handled by display:none on the wrap when .collapsed is
     present on the parent — instant hide, no animation, panel naturally
     shrinks to its titlebar (KDE-style window-shade). */
  .prop-panel-body-wrap {
    background: #2a2a2a;
    height: 600px;
    min-height: 100px;
    resize: vertical;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: #444 transparent;
  }
  .prop-panel-body-wrap::-webkit-scrollbar { width: 4px; }
  .prop-panel-body-wrap::-webkit-scrollbar-track { background: transparent; }
  .prop-panel-body-wrap::-webkit-scrollbar-thumb { background: #444; }
  .prop-panel-body-wrap::-webkit-scrollbar-thumb:hover { background: #555; }
  /* display:none rather than height:0. height:0 fights the inline height
     set by setBodyHeight() (inline beats class), and even if we won that
     fight, an empty 0-height scrollable element still painted a 1px
     border seam under the titlebar. Hiding the box outright is what
     "roll up into the titlebar" actually means. */
  .prop-panel.collapsed .prop-panel-body-wrap {
    display: none;
  }
  .prop-panel-body { padding: 8px 10px 10px; }

  .prop-group {
    margin-bottom: 8px;
  }
  .prop-group-head {
    color: #888;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
    padding-bottom: 2px;
    border-bottom: 1px solid #2a2a2a;
  }
  .prop-group-body { display: flex; flex-direction: column; gap: 4px; }

  .prop-row {
    display: flex;
    align-items: center;
    padding: 2px 0;
  }
  .prop-row-label {
    width: 80px;
    color: #aaa;
    user-select: none;
  }
  .prop-row-value {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
  }
  .prop-row-reset {
    background: transparent;
    border: none;
    color: #777;
    cursor: pointer;
    padding: 0 2px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
  }
  .prop-row-reset .micon {
    font-size: 16px;
    line-height: 1;
  }
  .prop-row-reset:hover {
    color: #ddd;
    background: #2a2a2a;
  }
  .prop-row-reset.at-default {
    color: #444;
    cursor: default;
  }
  .prop-row-reset.at-default:hover {
    color: #444;
    background: transparent;
  }
  .prop-row-note {
    color: #777;
    font-style: italic;
    padding: 4px 0;
  }
  .prop-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 8px;
    border-bottom: 1px solid #2a2a2a;
  }
  .prop-tab {
    background: transparent;
    border: 0;
    color: #888;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 11px;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
  }
  .prop-tab:hover { color: #ddd; }
  .prop-tab.active {
    color: #fff;
    border-bottom-color: #4a90e2;
  }
  .prop-tab-pane { display: block; }
  .prop-effect-block {
    border-top: 1px solid #2a2a2a;
    padding: 8px 0;
  }
  .prop-effect-block:first-child {
    border-top: 0;
    padding-top: 0;
  }
  .prop-effect-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
  }
  .prop-effect-handle {
    cursor: grab;
    color: #555;
    font-size: 14px;
    line-height: 1;
    letter-spacing: -2px;
    padding: 0 4px;
    user-select: none;
  }
  .prop-effect-handle:hover { color: #999; }
  .prop-effect-block.dragging {
    opacity: 0.85;
    box-shadow: 0 4px 16px rgba(0,0,0,0.5);
    background: #1a1a1a;
    border-radius: 4px;
    border: 1px solid #4a90e2;
  }
  .prop-effect-block.dragging .prop-effect-handle { cursor: grabbing; }
  .prop-effect-placeholder {
    background: #4a90e2;
    opacity: 0.15;
    border-radius: 4px;
    margin: 4px 0;
  }
  body.prop-effect-dragging-cursor, body.prop-effect-dragging-cursor * {
    cursor: grabbing !important;
  }
  .prop-effect-enable {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #ddd;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    user-select: none;
  }
  .prop-effect-enable input[type="checkbox"] {
    margin: 0;
    accent-color: #4a90e2;
  }
  .prop-effect-body {
    padding-left: 0;
  }
  .prop-wheels-row {
    display: flex;
    gap: 8px;
    justify-content: space-between;
    padding: 4px 0;
  }
  .prop-wheel {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
  }
  .prop-wheel-label {
    color: #aaa;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  .prop-wheel-stage {
    display: flex;
    gap: 4px;
    align-items: center;
  }
  .prop-wheel-svg {
    display: block;
  }
  .prop-wheel-luma {
    height: 110px;
    display: flex;
    align-items: stretch;
  }
  .prop-wheel-luma-track {
    position: relative;
    width: 10px;
    background: linear-gradient(to top, #000, #fff);
    border: 1px solid #2a2a2a;
    border-radius: 2px;
    cursor: ns-resize;
  }
  .prop-wheel-luma-thumb {
    position: absolute;
    left: -3px;
    right: -3px;
    height: 3px;
    background: #fff;
    border: 1px solid #000;
    transform: translateY(50%);
    pointer-events: none;
  }
  .prop-wheel-luma-center {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: #555;
    pointer-events: none;
  }
  .prop-wheel-readout {
    color: #777;
    font-family: ui-monospace, SF Mono, Menlo, monospace;
    font-size: 9px;
    text-align: center;
    user-select: none;
  }
  /* Scrubbable number control */
  .prop-scrub {
    background: #111;
    border: 1px solid #2a2a2a;
    border-radius: 3px;
    color: #ddd;
    padding: 3px 8px;
    min-width: 80px;
    text-align: right;
    cursor: ew-resize;
    user-select: none;
    font-family: ui-monospace, SF Mono, Menlo, monospace;
    font-size: 11px;
  }
  .prop-scrub:hover { border-color: #3a3a3a; background: #161616; }
  .prop-scrub.scrubbing {
    border-color: #4a8ac9;
    background: #1a242e;
    color: #fff;
  }
  .prop-scrub-editor {
    background: #111;
    border: 1px solid #4a8ac9;
    border-radius: 3px;
    color: #fff;
    padding: 3px 8px;
    min-width: 80px;
    text-align: right;
    font-family: ui-monospace, SF Mono, Menlo, monospace;
    font-size: 11px;
    outline: none;
  }