/*
  Forge Design System
  ────────────────────────────────────────────────────────────────
  Drop this file into any Forge-family tool. Provides:
    1. CSS custom properties (color, type, spacing, layout tokens)
    2. Reset + base
    3. Component classes: toolbar, panels, param rows, sliders,
       segmented controls, toggle switches, buttons, dropzones,
       timeline transport, upload areas
  ────────────────────────────────────────────────────────────────
  Import order: forge-design-system.css → your tool's style.css
*/

/* ================================================================
   1. TOKENS
================================================================ */
:root {
  /* --- Color: Background layers (dark to medium) --- */
  --bg:             #333333;   /* outermost app chrome */
  --panel-bg:       #474747;   /* browser / inspector panel fill */
  --panel-header:   #565656;   /* section header gradient top */
  --panel-dark:     #383838;   /* inset wells, inputs, track lanes */

  /* --- Color: Toolbar (brushed aluminum) --- */
  --toolbar-bg:     #787878;   /* mid-point of gradient */
  --toolbar-hi:     #949494;   /* highlight (top edge) */
  --toolbar-lo:     #606060;   /* shadow (bottom edge) */

  /* --- Color: Borders --- */
  --border:         #222222;   /* hard separator */
  --border-hi:      #6e6e6e;   /* lighter inset border */
  --border-inner:   #585858;   /* input / component inner border */

  /* --- Color: Text --- */
  --text:           #d8d8d8;   /* primary readable text */
  --text-dim:       #999999;   /* labels, hints, secondary */
  --text-bright:    #f0f0f0;   /* headers, active values */

  /* --- Color: Accent & semantic --- */
  --accent:         #f0a020;   /* amber — active states, playhead */
  --accent-dim:     #7a5010;   /* dimmed accent border */
  --green:          #4caf50;
  --red:            #e84040;
  --blue:           #4a90d9;

  /* --- Toolbar gradient (use as background shorthand) --- */
  --toolbar-gradient: linear-gradient(
    to bottom,
    #b0b0b0 0%,
    #909090 30%,
    #787878 70%,
    #686868 100%
  );

  /* --- Layout dimensions --- */
  --toolbar-h:      38px;
  --browser-w:      220px;
  --inspector-w:    228px;
  --timeline-h:     180px;

  /* --- Spacing scale --- */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;

  /* --- Border radius (keep them tight — FCP aesthetic) --- */
  --r-xs: 2px;
  --r-sm: 3px;
  --r-md: 4px;

  /* --- Typography --- */
  --font-ui:        'DM Sans',  system-ui, sans-serif;
  --font-mono:      'DM Mono', 'Courier New', monospace;
  --font-display:   'Bebas Neue', sans-serif;

  --text-xs:  10px;
  --text-sm:  11px;
  --text-md:  12px;
  --text-lg:  13px;

  /* --- Shadows / insets --- */
  --shadow-inset:   inset 0 1px 2px rgba(0,0,0,0.4);
  --shadow-inset-hv: inset 0 1px 3px rgba(0,0,0,0.5);
  --shadow-drop:    0 1px 3px rgba(0,0,0,0.5);
  --shadow-hi:      inset 0 1px 0 rgba(255,255,255,0.07);
}


/* ================================================================
   2. RESET + BASE
================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  width: 100%; height: 100%; overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--text-md);
  -webkit-font-smoothing: antialiased;
}

/* Utility */
.hidden  { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }


/* ================================================================
   3. SCROLLBARS
================================================================ */
::-webkit-scrollbar        { width: 6px; height: 6px; }
::-webkit-scrollbar-track  { background: transparent; }
::-webkit-scrollbar-thumb  { background: #555; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #666; }

* { scrollbar-width: thin; scrollbar-color: #555 transparent; }


/* ================================================================
   4. APP SHELL (4-panel CSS grid)
   Override columns/rows per-tool as needed.
================================================================ */
.forge-app {
  width: 100vw;
  height: 100vh;
  display: grid;
  grid-template-rows: var(--toolbar-h) 1fr var(--timeline-h);
  grid-template-columns: 1fr;
  grid-template-areas:
    "toolbar"
    "main"
    "timeline";
  background: var(--bg);
}

.forge-main {
  grid-area: main;
  display: grid;
  grid-template-columns: var(--browser-w) 1fr var(--inspector-w);
  overflow: hidden;
}


/* ================================================================
   5. TOOLBAR
================================================================ */
.forge-toolbar {
  grid-area: toolbar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  background: var(--toolbar-gradient);
  border-bottom: 2px solid #444;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 1px 3px rgba(0,0,0,0.4);
  gap: var(--sp-2);
  user-select: none;
}

.forge-toolbar-left,
.forge-toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Wordmark — displayed on the light aluminum toolbar */
.forge-wordmark {
  font-family: var(--font-display);
  font-size: 18px;
  color: #1a1a1a;
  letter-spacing: 0.05em;
  line-height: 1;
  text-shadow: 0 1px 0 rgba(255,255,255,0.3);
}

/* Thin vertical separator */
.toolbar-sep {
  width: 1px;
  height: 20px;
  background: #555;
  box-shadow: 1px 0 0 rgba(255,255,255,0.2);
}

/* Primary toolbar button (dark on silver) */
.toolbar-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 10px;
  height: 22px;
  border: 1px solid #484848;
  border-radius: var(--r-sm);
  background: linear-gradient(to bottom, #686868, #505050);
  color: #1a1a1a;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.25), 0 1px 2px rgba(0,0,0,0.3);
  text-shadow: 0 1px 0 rgba(255,255,255,0.2);
}

.toolbar-btn:hover {
  background: linear-gradient(to bottom, #787878, #606060);
  color: #111;
}

.toolbar-btn.danger { color: var(--red); border-color: #6a3030; }

/* Segmented mode tabs in toolbar */
.forge-mode-tabs {
  display: flex;
  border: 1px solid #484848;
  border-radius: var(--r-sm);
  overflow: hidden;
  background: #555;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.4), 0 1px 0 rgba(255,255,255,0.15);
}

.forge-mode-tab {
  padding: 0 14px;
  height: 22px;
  border: none;
  background: transparent;
  color: #222;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  border-right: 1px solid #484848;
  transition: background 0.15s, color 0.15s;
  text-shadow: 0 1px 0 rgba(255,255,255,0.2);
}

.forge-mode-tab:last-child { border-right: none; }
.forge-mode-tab:hover { background: rgba(255,255,255,0.15); color: #111; }

.forge-mode-tab.active {
  background: linear-gradient(to bottom, #4a4a4a, #383838);
  color: #e8e8e8;
  text-shadow: none;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.4);
}


/* ================================================================
   6. PANELS (browser + inspector)
================================================================ */
.forge-panel {
  background: var(--panel-bg);
  overflow-y: auto;
  overflow-x: hidden;
}

.forge-panel-left  { border-right: 1px solid var(--border); }
.forge-panel-right { border-left:  1px solid var(--border); }

/* Panel header strip */
.panel-header {
  display: flex;
  align-items: center;
  padding: 0 10px;
  height: 26px;
  background: linear-gradient(to bottom, var(--panel-header), #444444);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.panel-title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Collapsible inspector section (uses <details>/<summary>) */
.inspector-section {
  border-bottom: 1px solid var(--border);
}

.inspector-section-title {
  display: flex;
  align-items: center;
  padding: 6px 10px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  user-select: none;
  background: linear-gradient(to bottom, #424242, #3c3c3c);
  list-style: none;
  transition: background 0.15s;
}

.inspector-section-title::-webkit-details-marker { display: none; }

.inspector-section-title::before {
  content: '▶';
  font-size: 7px;
  margin-right: 6px;
  opacity: 0.5;
  transition: transform 0.15s;
  display: inline-block;
}

details[open] .inspector-section-title::before { transform: rotate(90deg); }
.inspector-section-title:hover { background: linear-gradient(to bottom, #4a4a4a, #424242); }

.inspector-section > *:not(summary) { padding: var(--sp-2) 10px; }


/* ================================================================
   7. PARAM ROWS
   Label · Slider · Number input  (3-column grid)
================================================================ */
.param-row-full {
  display: grid;
  grid-template-columns: 60px 1fr 44px;
  align-items: center;
  gap: 5px;
  margin-bottom: 5px;
}

.param-row-full:last-child { margin-bottom: 0; }

/* 2-column variant (no label) */
.param-row {
  display: grid;
  grid-template-columns: 1fr 44px;
  align-items: center;
  gap: 5px;
}

.param-label {
  font-size: var(--text-sm);
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Color swatch + label row */
.param-color-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}


/* ================================================================
   8. SLIDERS
================================================================ */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: #252525;
  border-radius: 2px;
  outline: none;
  border: 1px solid #1a1a1a;
  box-shadow: var(--shadow-inset);
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  background: linear-gradient(to bottom, #888, #666);
  border-radius: 50%;
  border: 1px solid #333;
  box-shadow: var(--shadow-drop);
  cursor: grab;
  transition: background 0.15s;
}

.slider::-webkit-slider-thumb:hover  { background: linear-gradient(to bottom, #aaa, #888); }
.slider::-webkit-slider-thumb:active { cursor: grabbing; background: linear-gradient(to bottom, var(--accent), #c07010); }


/* ================================================================
   9. NUMBER FIELD
================================================================ */
.num-field {
  width: 44px;
  padding: 2px 4px;
  background: var(--panel-dark);
  border: 1px solid #2a2a2a;
  border-radius: var(--r-xs);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-align: right;
  outline: none;
  box-shadow: var(--shadow-inset);
}

.num-field:focus {
  border-color: var(--blue);
  box-shadow: var(--shadow-inset), 0 0 0 1px rgba(74,144,217,0.3);
}


/* ================================================================
   10. TEXT FIELD & SELECT
================================================================ */
.text-field {
  width: 100%;
  padding: 5px 7px;
  background: var(--panel-dark);
  border: 1px solid #2a2a2a;
  border-radius: var(--r-xs);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--text-md);
  outline: none;
  box-shadow: var(--shadow-inset);
  transition: border-color 0.15s;
}

.text-field:focus { border-color: var(--blue); }

.text-field-large { font-size: 15px; padding: 7px; letter-spacing: 0.02em; }

.select-field {
  width: 100%;
  padding: 4px 6px;
  background: var(--panel-dark);
  border: 1px solid #2a2a2a;
  border-radius: var(--r-xs);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  outline: none;
  cursor: pointer;
}

/* Text field with inline clear (×) */
.text-input-row { position: relative; display: flex; align-items: center; }
.text-input-row .text-field { flex: 1; padding-right: 28px; }

.input-clear-btn {
  position: absolute;
  right: 6px;
  background: none;
  border: none;
  color: #555;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  transition: color 0.15s;
}

.input-clear-btn:hover { color: var(--red); }

/* Hint text */
.input-hint {
  font-size: var(--text-xs);
  color: #555;
  letter-spacing: 0.04em;
}


/* ================================================================
   11. SEGMENTED CONTROLS
================================================================ */
.segmented {
  display: flex;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--panel-dark);
  box-shadow: var(--shadow-inset);
  margin-bottom: var(--sp-2);
}

.seg-btn {
  flex: 1;
  padding: 4px 0;
  border: none;
  border-right: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.seg-btn:last-child { border-right: none; }
.seg-btn:hover      { background: rgba(255,255,255,0.06); color: var(--text); }

.seg-btn.active {
  background: linear-gradient(to bottom, #585858, #484848);
  color: var(--text-bright);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}

/* Compact variant */
.segmented-sm {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--panel-dark);
}

.seg-btn-sm {
  flex: 1;
  padding: 3px 8px;
  border: none;
  border-right: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.seg-btn-sm:last-child { border-right: none; }
.seg-btn-sm.active     { background: #555; color: var(--text-bright); }


/* ================================================================
   12. TOGGLE SWITCH
================================================================ */
.toggle-row {
  display: flex;
  align-items: center;
  padding: 5px 0;
  margin-bottom: 2px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: var(--text-sm);
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}

.toggle-label:hover { color: var(--text); }

.toggle-check { display: none; }

.toggle-track {
  position: relative;
  width: 28px;
  height: 15px;
  background: #2a2a2a;
  border-radius: 8px;
  border: 1px solid #222;
  box-shadow: var(--shadow-inset-hv);
  flex-shrink: 0;
  transition: background 0.2s;
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 9px;
  height: 9px;
  background: #666;
  border-radius: 50%;
  transition: left 0.2s, background 0.2s;
  box-shadow: 0 1px 2px rgba(0,0,0,0.4);
}

.toggle-check:checked + .toggle-track {
  background: var(--accent);
  border-color: #c07010;
}

.toggle-check:checked + .toggle-track .toggle-thumb {
  left: 15px;
  background: #fff;
}


/* ================================================================
   13. BUTTONS
================================================================ */

/* Full-width action button (inside panels) */
.action-btn {
  width: 100%;
  padding: 6px 0;
  background: linear-gradient(to bottom, #505050, #3c3c3c);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  box-shadow: var(--shadow-hi);
}

.action-btn:hover  { background: linear-gradient(to bottom, #5c5c5c, #484848); color: var(--text-bright); }
.action-btn:active { background: linear-gradient(to bottom, #404040, #353535); }

/* Subtle destructive / clear button */
.clear-btn {
  width: 100%;
  padding: 5px 0;
  background: none;
  border: 1px solid #3a3a3a;
  border-radius: var(--r-xs);
  color: #666;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.clear-btn:hover { color: var(--red); border-color: #6a3030; }

/* Icon-only square button */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  background: var(--panel-dark);
  border: 1px solid var(--border-inner);
  border-radius: var(--r-xs);
  color: var(--text-dim);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.icon-btn:hover { background: #484848; color: var(--text-bright); border-color: var(--accent); }

/* Inline reset (↺) */
.reset-btn {
  background: none;
  border: none;
  color: #555;
  cursor: pointer;
  font-size: var(--text-md);
  padding: 0;
  line-height: 1;
  transition: color 0.15s;
  text-align: center;
}

.reset-btn:hover { color: var(--accent); }

/* Blink animation (recording dot) */
@keyframes blink { 50% { opacity: 0.2; } }

.rec-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  animation: blink 1s step-end infinite;
}


/* ================================================================
   14. DRAG-DROP ZONE
================================================================ */
.dropzone {
  position: relative;
  border: 1px dashed #555;
  border-radius: var(--r-sm);
  background: var(--panel-dark);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  overflow: hidden;
}

.dropzone:hover,
.dropzone.drag-over {
  border-color: var(--accent);
  background: rgba(240,160,32,0.04);
}

.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 10px;
  color: var(--text-dim);
  pointer-events: none;
}

.dropzone-inner svg  { opacity: 0.5; }
.dropzone-inner span { font-size: var(--text-sm); }
.dropzone-sub        { font-size: var(--text-xs); color: #666; }


/* ================================================================
   15. UPLOAD AREA (inline dashed row, for bg image / HDRI)
================================================================ */
.upload-area {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) 10px;
  background: var(--panel-dark);
  border: 1px dashed #4a4a4a;
  border-radius: var(--r-xs);
  color: var(--text-dim);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.upload-area:hover {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(240,160,32,0.04);
}

.upload-area svg  { flex-shrink: 0; opacity: 0.6; }
.upload-area span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }


/* ================================================================
   16. LIST ITEMS (e.g. SVG browser list)
================================================================ */
.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 8px;
  border-radius: var(--r-xs);
  background: var(--panel-dark);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  font-size: var(--text-sm);
}

.list-item:hover  { background: #404040; border-color: var(--border-inner); }

.list-item.active { border-color: var(--accent); background: rgba(240,160,32,0.08); }

.list-item-name {
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.list-item-del {
  color: #666;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
  padding-left: 4px;
  transition: color 0.15s;
}

.list-item-del:hover { color: var(--red); }


/* ================================================================
   17. TIMELINE DOCK
================================================================ */
.forge-timeline {
  grid-area: timeline;
  display: grid;
  grid-template-rows: 32px 1fr 26px;
  background: var(--panel-bg);
  border-top: 1px solid var(--border);
  overflow: hidden;
}

/* Transport row */
.forge-transport {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
  background: linear-gradient(to bottom, var(--panel-header), #404040);
  border-bottom: 1px solid var(--border);
}

.transport-group {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--panel-dark);
  box-shadow: var(--shadow-inset);
}

.transport-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 22px;
  background: transparent;
  border: none;
  border-right: 1px solid var(--border);
  color: var(--text-dim);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.transport-btn:last-child { border-right: none; }
.transport-btn:hover      { background: rgba(255,255,255,0.08); color: var(--text-bright); }
.transport-btn.playing    { color: var(--accent); }
.transport-btn.looping    { color: var(--blue); }

/* Monospace timecode display */
.timecode {
  font-family: var(--font-mono);
  font-size: var(--text-md);
  color: var(--text-bright);
  letter-spacing: 0.08em;
  background: var(--panel-dark);
  padding: 2px 7px;
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
  box-shadow: var(--shadow-inset);
}

/* Ruler / scrub bar */
.timeline-ruler {
  height: 20px;
  background: #282828;
  border-bottom: 1px solid var(--border);
  position: relative;
  flex-shrink: 0;
  cursor: ew-resize;
  user-select: none;
}

.timeline-ruler:hover { background: #2e2e2e; }

/* Track row */
.track-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  height: 28px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.track-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px;
  background: linear-gradient(to right, #3e3e3e, #393939);
  border-right: 1px solid var(--border);
}

.track-name { font-size: var(--text-xs); color: var(--text-dim); white-space: nowrap; }

.track-lane {
  position: relative;
  background: var(--panel-dark);
  overflow: hidden;
  cursor: pointer;
}

.track-lane:hover { background: #2c2c2c; }

/* Playhead line */
.track-playhead {
  position: absolute;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--accent);
  cursor: ew-resize;
  left: 0;
  padding: 0 4px;
  margin-left: -4px;
  box-sizing: content-box;
}

/* Keyframe diamond marker */
.kf-marker {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  width: 7px;
  height: 7px;
  background: var(--accent);
  cursor: pointer;
  border: 1px solid rgba(0,0,0,0.4);
  box-shadow: var(--shadow-drop);
  transition: background 0.15s;
}

.kf-marker:hover { background: #fff; }

/* Keyframe add button (◆ in track header) */
.kf-add-btn {
  background: none;
  border: none;
  color: #555;
  font-size: 9px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color 0.15s;
  flex-shrink: 0;
}

.kf-add-btn:hover { color: var(--accent); }

/* Scrubber (bottom of timeline) */
.forge-scrubber-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0 10px;
  background: linear-gradient(to bottom, #383838, #323232);
  border-top: 1px solid var(--border);
}

.scrubber {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: #1e1e1e;
  border-radius: 2px;
  border: 1px solid #1a1a1a;
  box-shadow: var(--shadow-inset-hv);
  outline: none;
  cursor: pointer;
}

.scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 18px;
  background: linear-gradient(to bottom, #aaa, #888);
  border-radius: 2px;
  border: 1px solid #333;
  box-shadow: var(--shadow-drop);
  cursor: grab;
}

.scrubber::-webkit-slider-thumb:active {
  cursor: grabbing;
  background: linear-gradient(to bottom, var(--accent), #c07010);
}


/* ================================================================
   18. LANDING PAGE (cinematic full-screen entry)
================================================================ */
.forge-landing {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: #111111;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.forge-landing.fade-out {
  opacity: 0;
  transform: scale(1.04);
  pointer-events: none;
}

.landing-bg-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

.landing-content {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

@keyframes forge-land-in {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.landing-eyebrow {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 300;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-dim);
  animation: forge-land-in 1s 0.2s cubic-bezier(0.22,1,0.36,1) both;
}

.landing-title {
  font-family: var(--font-display);
  font-size: clamp(80px, 14vw, 160px);
  line-height: 0.9;
  letter-spacing: 0.02em;
  background: linear-gradient(160deg, #ffffff 30%, #888888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: forge-land-in 1s 0.35s cubic-bezier(0.22,1,0.36,1) both;
}

.landing-sub {
  font-size: var(--text-lg);
  font-weight: 300;
  color: var(--text-dim);
  line-height: 1.8;
  letter-spacing: 0.02em;
  animation: forge-land-in 1s 0.5s cubic-bezier(0.22,1,0.36,1) both;
}

.landing-enter-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text-bright);
  font-family: var(--font-ui);
  font-size: var(--text-md);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--r-sm);
  transition: background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
  animation: forge-land-in 1s 0.65s cubic-bezier(0.22,1,0.36,1) both;
}

.landing-enter-btn:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.4);
  box-shadow: 0 0 20px rgba(240,160,32,0.15);
  color: var(--accent);
}

.landing-footer {
  font-size: var(--text-xs);
  color: #444;
  letter-spacing: 0.08em;
  animation: forge-land-in 1s 0.8s cubic-bezier(0.22,1,0.36,1) both;
}