:root{color-scheme:dark;--bg: #0f1115;--fg: #e6e6e6;--muted: #8a8f98;--accent: #ffb400;--panel: #1a1e26}*{box-sizing:border-box}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--fg);font:15px/1.5 system-ui,sans-serif;padding:16px}header h1{margin:0;font-size:1.4rem}header .sub{margin:0 0 24px;color:var(--muted)}h2{font-size:1.1rem;margin:0 0 4px}form{display:grid;gap:16px;max-width:520px}form.row{grid-template-columns:1fr auto auto;align-items:end;max-width:720px;margin-top:24px}label{display:grid;gap:6px}small,.hint{color:var(--muted)}code{color:var(--accent)}.error{color:#ff7a7a;min-height:1.5em;margin:8px 0 0}input,select{padding:8px 10px;border:1px solid #333a47;border-radius:6px;background:var(--panel);color:var(--fg);font:inherit}button{justify-self:start;padding:8px 18px;border:0;border-radius:6px;background:var(--accent);color:#000;font-weight:600;cursor:pointer}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;max-width:960px;margin-top:12px}.grid button{justify-self:stretch;text-align:left;padding:12px 14px;background:var(--panel);color:var(--fg);border:1px solid #333a47}.grid button:hover{border-color:var(--accent);color:var(--accent)}details{margin-top:24px}details form{margin-top:12px}summary{cursor:pointer;color:var(--muted)}#game{width:min(100%,1024px);aspect-ratio:4 / 3;background:#000}.bar{display:flex;gap:16px;align-items:center;color:var(--muted)}.bar button{padding:4px 12px;background:#2a2f3a;color:var(--fg)}@media(max-width:600px){form.row{grid-template-columns:1fr}}