:root{--bg:#f6f7fb;--card:#fff;--text:#14161f;--muted:#646a7d;--border:#e3e6ef;--accent:#5b4bff;--ok:#12a46b;--warn:#c98a00;--bad:#d23c3c}@media (prefers-color-scheme:dark){:root{--bg:#0e1016;--card:#171a23;--text:#eef0f6;--muted:#9aa0b4;--border:#262a36;--accent:#8f84ff}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}a{color:var(--accent)}code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}pre{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:12px 16px;overflow-x:auto}h1{margin:0;font-size:1.6rem}h2{color:var(--muted);margin:0 0 8px;font-size:.95rem;font-weight:600}.muted{color:var(--muted)}.small{font-size:.85rem}.setup,.lobby{max-width:1100px;margin:0 auto;padding:32px 16px 48px}.lobby header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px;display:flex}.lobby header p{margin:4px 0 0}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;margin-bottom:16px;padding:16px}.row{flex-wrap:wrap;align-items:center;gap:8px;margin:0;display:flex}.field{flex-direction:column;gap:4px;max-width:280px;margin-bottom:12px;display:flex}.field span{color:var(--muted);font-size:.85rem}input{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:8px;min-width:0;padding:8px 12px}button{font:inherit;color:var(--text);cursor:pointer;border:1px solid var(--accent);background:0 0;border-radius:8px;padding:8px 16px}button.primary{background:var(--accent);color:#fff}button:disabled{opacity:.45;cursor:default}button.link{color:var(--bad);border:none;padding:0 4px;font-size:.85rem}.code-input{text-transform:uppercase;letter-spacing:.12em;width:7.5em}.notice{color:var(--warn);margin:12px 0 0}.code{letter-spacing:.12em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700}.rooms,.players,.messages{margin:0;padding:0;list-style:none}.rooms li,.players li{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:8px 0;display:flex}.rooms li:last-child,.players li:last-child{border-bottom:none}.rooms li .muted{flex:1}.players li>span:first-child{flex:1;align-items:center;gap:6px;display:flex}.players li.me>span:first-child{font-weight:600}.players+.row{margin-top:12px}.badge{color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:0 6px;font-size:.72rem;font-weight:500}.score{font-variant-numeric:tabular-nums;text-align:right;min-width:1.5em;font-weight:700}.ready{color:var(--ok)}.grid{grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:16px;display:grid}.grid .card{margin:0}.arena{flex-direction:column;grid-row:span 2;justify-content:center;display:flex}.pad{background:var(--border);width:100%;min-height:280px;color:var(--text);touch-action:manipulation;-webkit-user-select:none;user-select:none;border:none;border-radius:12px;font-size:1.6rem;font-weight:700}.pad:disabled{opacity:1}.pad.wait{background:var(--bad);color:#fff}.pad.go{background:var(--ok);color:#fff}.pad.result,.pad.over{background:var(--accent);color:#fff}.chat .messages{max-height:220px;margin-bottom:4px;overflow-y:auto}.chat .messages li{overflow-wrap:anywhere;padding:2px 0}.chat .messages li.mine strong{color:var(--accent)}.chat .typing{min-height:1.3em;margin:0 0 8px}.chat form input{flex:1}@media (max-width:760px){.grid{grid-template-columns:minmax(0,1fr)}.arena{order:-1;grid-row:auto}.pad{min-height:200px}}.topbar{border-bottom:1px solid var(--border);background:var(--card);justify-content:space-between;align-items:center;gap:12px;padding:8px 16px;font-size:.9em;display:flex}.topbar a{text-decoration:none}.topbar select{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:4px 6px}.topbar-links{white-space:nowrap;flex-shrink:0;align-items:center;gap:12px;display:flex}