:root{--bg:#f4ecdc;--ink:#3b1d12;--card:#fffaf0;--accent:#a81612}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.4 ui-monospace,Menlo,Consolas,monospace}
header{text-align:center;padding:20px 12px 4px}
h1{margin:0;font-size:2rem}
.sub{margin:4px 0 0;opacity:.75}
main{max-width:760px;margin:14px auto;padding:0 12px;text-align:center}
.panel{background:var(--card);border:2px solid var(--ink);border-radius:10px;padding:14px;margin-bottom:12px}
button{font:inherit;cursor:pointer;border:2px solid var(--ink);background:var(--accent);color:#fff;border-radius:8px;padding:9px 14px;font-weight:700}
button:hover:not(:disabled){filter:brightness(1.1)}
button:disabled{opacity:.45;cursor:not-allowed}
canvas{max-width:100%;border:2px solid var(--ink);border-radius:8px;background:#000;touch-action:none}
.stat{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;margin:6px 0}
.msg{min-height:1.4em}
.share a,footer a{color:var(--ink)}
footer{text-align:center;padding:12px 12px 32px;font-size:.85rem}
#grid{font-size:clamp(14px,4.2vw,26px);line-height:1.15;margin:0 auto 8px;letter-spacing:0;display:inline-block;text-align:left}
.pad button{width:54px;margin:2px}
.legend{font-size:.8rem;opacity:.8}