:root {
  --bg: #f6f5f2;
  --panel: #ffffff;
  --ink: #1d1c1a;
  --muted: #6d6a64;
  --line: #e3e0da;
  --accent: #2b59c3;
  --accent-ink: #ffffff;
  --fabric: #ebe8e1;
  --grid: rgba(0, 0, 0, 0.06);
  --warn-bg: #fff6e0;
  --warn-ink: #7a5200;
  --radius: 8px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161615;
    --panel: #1f1f1d;
    --ink: #ecebe7;
    --muted: #9b988f;
    --line: #34332f;
    --accent: #7ea2ff;
    --accent-ink: #0e1630;
    --fabric: #2a2926;
    --grid: rgba(255, 255, 255, 0.05);
    --warn-bg: #3a2f12;
    --warn-ink: #f3d48a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
  display: flex;
  flex-direction: column;
}
.mono { font-variant-numeric: tabular-nums; font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; }

.bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--panel);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 650; letter-spacing: -0.01em; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.sep { width: 1px; height: 22px; background: var(--line); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--panel); color: var(--ink); font: inherit; font-weight: 550; cursor: pointer;
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.ghost { background: transparent; }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.layout { flex: 1; min-height: 0; display: grid; grid-template-columns: 360px 1fr; }
.side { border-right: 1px solid var(--line); overflow-y: auto; background: var(--panel); }
.panel { padding: 14px 16px; border-bottom: 1px solid var(--line); }
.panel h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 0 0 10px; font-weight: 650; display: inline-block; }
.panel h2 small { text-transform: none; letter-spacing: 0; font-weight: 400; margin-left: 6px; }
details.panel summary { cursor: pointer; list-style: none; }
details.panel summary::-webkit-details-marker { display: none; }
details.panel summary h2::after { content: " ▸"; }
details.panel[open] summary h2::after { content: " ▾"; }

label { display: flex; justify-content: space-between; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; margin: 6px 0; }
label span { display: inline-flex; align-items: center; gap: 6px; }
label.check { justify-content: flex-start; color: var(--ink); }
input[type="number"], select {
  font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 6px; padding: 4px 6px; width: 76px;
}
select { width: auto; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid2 label { flex-direction: column; align-items: stretch; gap: 4px; margin: 0; }
.grid2 input { width: 100%; }
fieldset { border: 0; padding: 0; margin: 10px 0 14px; }
legend { font-weight: 600; font-size: 13px; padding: 0; margin-bottom: 2px; color: var(--ink); }

.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; margin-top: 10px; }
.seg button { border: 0; background: transparent; color: var(--muted); padding: 4px 12px; font: inherit; cursor: pointer; }
.seg button.on { background: var(--accent); color: var(--accent-ink); }

.objects { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.objects .empty { color: var(--muted); padding: 8px 0; }
.obj {
  display: grid; grid-template-columns: auto 22px 1fr auto auto; align-items: center; gap: 8px;
  padding: 6px 8px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg);
}
.obj.off { opacity: 0.5; }
.obj.sel { border-color: var(--accent); }
.obj .swatch { width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--line); padding: 0; cursor: pointer; overflow: hidden; }
.obj .swatch input { opacity: 0; width: 100%; height: 100%; cursor: pointer; }
.obj .name { font-size: 13px; min-width: 0; }
.obj .name small { display: block; color: var(--muted); font-size: 11px; }
.obj .controls { display: flex; gap: 4px; align-items: center; }
.obj .controls input[type="number"] { width: 54px; }
.obj .order { display: flex; flex-direction: column; }
.obj .extra { grid-column: 3 / -1; margin: 0; font-size: 12px; }
.obj .extra select { font-size: 12px; padding: 2px 4px; }
.obj .order button { border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 10px; line-height: 1; padding: 2px; }
.obj .order button:hover { color: var(--ink); }

.stage { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.canvas-wrap { position: relative; flex: 1; min-height: 280px; }
#canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; background: var(--fabric); }
#canvas:active { cursor: grabbing; }
.drop-hint { position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none; text-align: center; color: var(--muted); }
.drop-hint p { border: 2px dashed var(--line); border-radius: 14px; padding: 28px 36px; background: color-mix(in srgb, var(--panel) 70%, transparent); }
.drop-hint[hidden] { display: none; }
.canvas-wrap.dragging .drop-hint { display: grid !important; }
.canvas-wrap.dragging .drop-hint p { border-color: var(--accent); color: var(--ink); }
.toolbar {
  position: absolute; top: 10px; right: 10px; display: flex; gap: 6px; align-items: center;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 8px;
}
.toolbar label { margin: 0 4px 0 0; font-size: 12px; }
.icon { border: 1px solid var(--line); background: var(--panel); color: var(--ink); border-radius: 6px; width: 28px; height: 28px; cursor: pointer; font-size: 14px; }
.warnings { position: absolute; left: 10px; bottom: 10px; max-width: min(460px, calc(100% - 20px)); background: var(--warn-bg); color: var(--warn-ink); border-radius: var(--radius); padding: 8px 12px; font-size: 12px; }
.warnings ul { margin: 0; padding-left: 16px; }

.sim { display: flex; align-items: center; gap: 10px; padding: 8px 16px; border-top: 1px solid var(--line); background: var(--panel); }
.sim input[type="range"] { flex: 1; accent-color: var(--accent); }
.sim .mono { min-width: 130px; text-align: right; color: var(--muted); }

.stats { display: flex; flex-wrap: wrap; gap: 6px 22px; padding: 10px 16px; background: var(--panel); border-top: 1px solid var(--line); }
.stats div { display: flex; flex-direction: column; }
.stats b { font-size: 16px; font-variant-numeric: tabular-nums; }
.stats span { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.sequence { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0 16px 12px; list-style: none; background: var(--panel); }
.sequence li { display: flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px 3px 4px; font-size: 12px; }
.sequence i { width: 16px; height: 16px; border-radius: 50%; border: 1px solid var(--line); }

@media (max-width: 860px) {
  html, body { height: auto; }
  .layout { grid-template-columns: 1fr; flex: none; }
  .side { border-right: 0; max-height: none; order: 2; }
  .stage { order: 1; }
  .canvas-wrap { min-height: 60vh; }
}