/* per-game skin */
#stage{min-height:220px}
#board,#grid{display:grid;gap:5px;margin:0 auto;width:min(100%,420px)}
.cell{aspect-ratio:1;border:0;border-radius:8px;font-weight:800;cursor:pointer;color:#fff}
.cell.sel,.cell.on{outline:2px solid #1fb8a8}
.cell.dim{opacity:.35}
.cell.dead{visibility:hidden;pointer-events:none}
.row{display:flex;flex-wrap:wrap;gap:.45rem;justify-content:center;margin-top:.7rem}
canvas{display:block;margin:0 auto;max-width:100%;border-radius:12px;background:#101820}