:root{color-scheme:light dark;--bg: #ffffff;--fg: #24292f;--muted: #57606a;--border: #d0d7de;--accent: #216e39;--accent-fg: #ffffff}@media (prefers-color-scheme: dark){:root{--bg: #0d1117;--fg: #c9d1d9;--muted: #8b949e;--border: #30363d;--accent: #39d353;--accent-fg: #0d1117}}*{box-sizing:border-box}html,body{height:100%;margin:0}body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:16px;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}#app{width:100%;max-width:960px}.view{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center}.view-form h1{margin:0;font-size:2rem}.subtitle{margin:0;color:var(--muted)}.username-form{display:flex;gap:8px;width:100%;max-width:360px}.username-form input{flex:1;padding:10px 12px;font-size:1rem;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--fg)}button,.username-form button,.share-button{padding:10px 16px;font-size:1rem;font-weight:600;border:1px solid var(--border);border-radius:6px;background:var(--accent);color:var(--accent-fg);cursor:pointer;text-decoration:none;display:inline-block}button:disabled{opacity:.6;cursor:default}.error-message{color:#cf222e;margin:0}.view-empty p{font-size:1.25rem}.play-area{position:relative;width:100%}.game-canvas{display:block;width:100%;height:auto;max-width:100%;border:1px solid var(--border);border-radius:8px;touch-action:none;cursor:pointer}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;pointer-events:none}.guide-overlay{color:var(--fg);font-size:1.1rem;text-shadow:0 0 6px var(--bg),0 0 6px var(--bg)}.result-overlay{background:color-mix(in srgb,var(--bg) 85%,transparent);pointer-events:auto;border-radius:8px}.overlay[hidden]{display:none}.result-overlay h2{margin:0}.result-stats{margin:0;font-size:1.1rem}.result-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}