:root {
  color-scheme: light dark;
  --bg: #f6f6f4; --fg: #1c1c1a; --muted: #6b6b66; --line: #d9d9d4;
  --accent: #1971c2; --panel: #ffffff; --errore: #c92a2a;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #161615; --fg: #ececea; --muted: #9b9b95; --line: #333330; --accent: #4dabf7; --panel: #222220; --errore: #ff8787; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.4 system-ui, sans-serif; display: flex; flex-direction: column; height: 100dvh; }
.bar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--panel); }
h1 { font-size: 1.1rem; margin: 0 8px 0 0; }
button { font: inherit; padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--fg); cursor: pointer; }
button.primario { background: var(--accent); color: #fff; border-color: var(--accent); }
button:disabled { opacity: .5; cursor: wait; }
.colori { display: flex; gap: 6px; }
.colori button { width: 28px; height: 28px; padding: 0; border-radius: 50%; border: 2px solid var(--line); }
.colori button[aria-pressed="true"] { outline: 2px solid var(--accent); outline-offset: 2px; }
.spessore { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: .9rem; }
.stato { color: var(--muted); font-size: .9rem; }
.stato[data-tipo="errore"] { color: var(--errore); }
.legenda { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 8px 16px 0; font-size: .85rem; color: var(--muted); }
.gesto { margin-left: auto; font-weight: 600; color: var(--fg); }
.stage { position: relative; flex: 1; min-height: 0; margin: 8px 16px 16px; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff; }
.stage canvas { position: absolute; inset: 0; touch-action: none; }
#cursore { pointer-events: none; }
.preview { position: absolute; right: 12px; bottom: 12px; width: min(240px, 40%); aspect-ratio: 4 / 3; border-radius: 8px; overflow: hidden; background: #000; transform: scaleX(-1); display: none; box-shadow: 0 2px 10px rgba(0,0,0,.3); }
.preview.attiva { display: block; }
.preview video, .preview canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.fps { position: absolute; left: 12px; bottom: 8px; font-size: .75rem; color: #666; }