:root { color-scheme: dark; font-family: Inter, ui-sans-serif, system-ui, sans-serif; background:#101114; }
* { box-sizing:border-box; }
body { margin:0; overflow:hidden; touch-action:manipulation; }
.app-shell { width:100vw; height:100vh; position:relative; background:#08090b; }
#webcam, #three-canvas { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transform:scaleX(-1); }
#three-canvas { pointer-events:none; z-index:2; }
.mask-bar { position:absolute; z-index:3; top:18px; left:50%; transform:translateX(-50%); display:flex; align-items:center; gap:9px; max-width:calc(100vw - 105px); padding:8px; border:1px solid #ffffff1f; background:#17181bc9; border-radius:20px; backdrop-filter:blur(14px); box-shadow:0 10px 40px #0008; }
.mask-strip { display:flex; gap:8px; overflow-x:auto; max-width:min(580px, calc(100vw - 190px)); scrollbar-width:none; scroll-behavior:smooth; }
.mask-strip::-webkit-scrollbar { display:none; }
.mask-choice, .scroll-button { border:0; color:white; cursor:pointer; }
.mask-choice { flex:0 0 52px; width:52px; height:52px; padding:3px; border-radius:14px; background:#2c2e33; transition:.18s; }
.mask-choice img { width:100%; height:100%; object-fit:cover; border-radius:11px; }
.mask-choice.selected { outline:2px solid #fff; transform:translateY(-2px); }
.scroll-button { flex:0 0 28px; height:38px; border-radius:12px; background:#ffffff13; font-size:28px; line-height:20px; }
.status { position:absolute; bottom:20px; left:50%; transform:translateX(-50%); z-index:2; padding:9px 14px; border-radius:20px; background:#0009; color:#fff; font-size:13px; transition:opacity .4s; }
.status.quiet { opacity:0; }
.brand-logo { position:absolute; z-index:4; top:16px; left:16px; display:flex; align-items:center; gap:9px; padding:5px 14px 5px 5px; border-radius:26px; background:#17181bc9; backdrop-filter:blur(14px); border:1px solid #ffffff1f; box-shadow:0 8px 28px #0007; text-decoration:none; }
.brand-logo img { display:block; width:34px; height:34px; border-radius:10px; object-fit:contain; background:#f6f5f2; }
.brand-logo span { color:#f6f6f6; font-size:14px; font-weight:650; white-space:nowrap; }
/* Below this, the logo + "resonanz-labor" label would crowd or overlap the centred mask-bar
   (whose own width grows to fill narrow viewports) — icon only, no text, past that point. */
@media (max-width: 600px) {
  .brand-logo { padding:5px; }
  .brand-logo span { display:none; }
}
.debug-info { position:absolute; bottom:8px; left:8px; z-index:5; padding:8px 12px; border-radius:10px; background:#000a; color:#69ff9a; font:12px/1.5 ui-monospace, monospace; pointer-events:none; }
.debug-info[hidden] { display:none; }
.debug-info pre { margin:0 0 6px; }
.debug-info .debug-slider { display:flex; align-items:center; gap:6px; font-size:11px; pointer-events:auto; }
.debug-info input[type=range] { pointer-events:auto; width:110px; accent-color:#69ff9a; }
.mode-toast { position:absolute; top:90px; left:50%; transform:translateX(-50%); z-index:6; padding:8px 16px; border-radius:14px; background:#000c; color:#69ff9a; font-size:13px; font-weight:600; opacity:0; transition:opacity .25s; pointer-events:none; }
.mode-toast.visible { opacity:1; }