:root {
  --ink: #f1ece2;
  --ink-dim: rgba(241, 236, 226, 0.55);
  --glass: rgba(14, 14, 13, 0.42);
  --hair: rgba(241, 236, 226, 0.14);
  --thumb: rgba(241, 236, 226, 0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}
:root[data-light="1"] {
  --ink: #161513;
  --ink-dim: rgba(22, 21, 19, 0.55);
  --glass: rgba(236, 232, 222, 0.6);
  --hair: rgba(22, 21, 19, 0.14);
  --thumb: rgba(22, 21, 19, 0.08);
}

* { box-sizing: border-box; margin: 0; }
html, body { height: 100%; background: #0e0e0d; overflow: hidden; }
body {
  font: 500 11px/1.4 var(--mono);
  letter-spacing: 0.06em;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  transition: color 0.6s var(--ease);
}

canvas {
  position: fixed; inset: 0;
  touch-action: none;           /* drags on the canvas are ours, not the browser's scroll/zoom */
  -webkit-user-select: none; user-select: none; -webkit-touch-callout: none;
  width: 100vw; height: 100vh;
  display: block;
  opacity: 0;
  transition: opacity 1.2s var(--ease);
}
.ready canvas { opacity: 1; }

/* ── chrome ─────────────────────────────────────────── */

.chrome {
  position: fixed; left: 0; right: 0;
  display: flex; align-items: center;
  padding: max(20px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) 20px max(24px, env(safe-area-inset-left));
  pointer-events: none;
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease);
}
.chrome > * { pointer-events: auto; }
.top { top: 0; justify-content: space-between; gap: 24px; }
.bottom {
  bottom: 0; flex-direction: column; gap: 12px;
  padding-bottom: max(24px, env(safe-area-inset-bottom));
}
.bare .top { opacity: 0; transform: translateY(-8px); }
.bare .bottom { opacity: 0; transform: translateY(8px); }
.bare .chrome > * { pointer-events: none; }
body:not(.ready) .chrome { opacity: 0; }

.mark { font-size: 12px; letter-spacing: 0.02em; display: flex; align-items: center; gap: 2px; color: inherit; text-decoration: none; }
.cursor {
  width: 0.55em; height: 1.05em; background: currentColor; margin-left: 3px;
  animation: blink 1.1s steps(1) infinite;
}
.paused .cursor { animation: none; opacity: 0.35; }
@keyframes blink { 50% { opacity: 0; } }


[data-art="chair"] canvas { cursor: grab; }
.dragging canvas { cursor: grabbing; }

/* the chair's other look, tucked in a corner */
.flip {
  position: fixed; z-index: 1;
  right: max(18px, env(safe-area-inset-right)); bottom: max(18px, env(safe-area-inset-bottom));
  width: 24px; height: 24px; display: grid; place-items: center;
  color: var(--ink); opacity: 0.18;
  transition: opacity 0.4s var(--ease);
}
.flip:hover, .flip:focus-visible { opacity: 0.8; }
.flip:focus-visible { outline: 1px solid var(--ink); outline-offset: 2px; }
.bare .flip, body:not(.ready) .flip { opacity: 0; pointer-events: none; }

/* menu */
.menu { position: relative; }
.menu-btn {
  appearance: none; cursor: pointer; color: var(--ink);
  width: 34px; height: 34px; display: grid; place-items: center;
  background: var(--glass); border: 1px solid var(--hair); border-radius: 50%;
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  transition: background 0.6s var(--ease), border-color 0.6s var(--ease), transform 0.3s var(--ease);
}
@media (hover: hover) { .menu-btn:hover { transform: rotate(-8deg); } }   /* touch would leave it stuck tilted */
.menu-btn[aria-expanded="true"] { border-color: var(--ink-dim); }
.menu-btn:focus-visible, .menu-list a:focus-visible { outline: 1px solid var(--ink); outline-offset: 2px; }
.menu-list {
  position: absolute; top: calc(100% + 8px); right: 0;
  display: flex; flex-direction: column; min-width: 160px; padding: 6px;
  background: var(--glass); border: 1px solid var(--hair); border-radius: 14px;
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  opacity: 0; transform: translateY(-4px); pointer-events: none; visibility: hidden;
  transition: opacity 0.25s var(--ease), transform 0.35s var(--ease), visibility 0s 0.35s;
}
.menu.open .menu-list {
  opacity: 1; transform: none; pointer-events: auto; visibility: visible;
  transition: opacity 0.25s var(--ease), transform 0.35s var(--ease);
}
.menu-list a {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 9px 12px; border-radius: 9px;
  color: var(--ink-dim); text-decoration: none; text-transform: uppercase; letter-spacing: 0.12em;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.menu-list a:hover { color: var(--ink); background: var(--thumb); }
.menu-list a[aria-current="page"] { color: var(--ink); }
.menu-list a[aria-current="page"]::after { content: "·"; }

/* segmented control */
.seg {
  position: relative; display: flex; padding: 4px; gap: 2px;
  background: var(--glass);
  border: 1px solid var(--hair);
  border-radius: 999px;
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  transition: background 0.6s var(--ease), border-color 0.6s var(--ease);
}
.thumb {
  position: absolute; top: 4px; bottom: 4px; left: 0;
  border-radius: 999px;
  background: var(--thumb);
  box-shadow: inset 0 0 0 1px var(--hair);
  transition: transform 0.55s var(--ease), width 0.55s var(--ease);
}
.tab {
  position: relative; z-index: 1;
  appearance: none; border: 0; background: none; cursor: pointer;
  font: inherit; letter-spacing: inherit; text-transform: uppercase;
  color: var(--ink-dim);
  padding: 9px 16px 9px 14px;
  border-radius: 999px;
  display: flex; align-items: center; gap: 8px;
  transition: color 0.3s var(--ease);
}
.tab i { font-style: normal; opacity: 0.5; font-size: 10px; }
.tab:hover, .tab[aria-selected="true"] { color: var(--ink); }
.tab:focus-visible, .swatch:focus-visible { outline: 1px solid var(--ink); outline-offset: 2px; }

.swatches { display: flex; gap: 8px; }
.swatch {
  appearance: none; cursor: pointer; padding: 0;
  width: 14px; height: 14px; border-radius: 50%;
  border: 1px solid var(--hair);
  opacity: 0.55;
  transform: scale(0.85);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.swatch:hover { opacity: 0.9; }
.swatch[aria-pressed="true"] { opacity: 1; transform: scale(1); box-shadow: 0 0 0 2px var(--glass), 0 0 0 3px var(--ink-dim); }

.hint {
  color: var(--ink-dim); font-size: 10px; letter-spacing: 0.08em;
  animation: fade-out 1s var(--ease) 6s forwards;
}
@keyframes fade-out { to { opacity: 0; } }

.fallback { display: none; }
.no-gl .fallback {
  display: grid; place-items: center; position: fixed; inset: 0;
  color: var(--ink-dim);
}
.no-gl .chrome { display: none; }

@media (max-width: 640px) {
  .chrome { padding-left: 16px; padding-right: 16px; }
  .hint { display: none; }
  .tab { padding: 8px 12px; }
  .tab i { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; }
  .thumb, .chrome { transition: none; }
}