:root{--bg: #f6f7fb;--card: #fff;--accent: #00ff88}html,body,#app{margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:#111}.wrapper{max-width:500px;margin:0 auto;height:100svh;display:grid;padding:1rem;grid-template-rows:1fr auto;box-sizing:border-box;gap:3rem}.video-wrap{position:relative;width:100%;display:flex;align-items:center;justify-content:center}video{width:100%;height:auto;max-height:70vh}canvas.overlay{position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none}.controls{display:flex;gap:.5rem;flex-wrap:wrap}button{padding:.5rem .75rem;border-radius:6px;border:1px solid #ccc;background:#fff;cursor:pointer}button:disabled{opacity:.5}.status{font-size:.9rem;color:#333;margin-top:.5rem}dialog.result-dialog{padding:1rem 1.25rem;border-radius:8px;width:420px;max-width:90%;border:none;box-shadow:0 6px 20px #00000040}dialog::backdrop{background:#00000073}