:root{
  --bg:#09090b; --card:rgba(15,23,42,.72); --line:#1e293b; --text:#e4e4e7; --muted:#94a3b8;
  --em:#34d399; --em2:#10b981; --cy:#22d3ee; --bad:#f43f5e; --warn:#fbbf24;
  --radius:16px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text);
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
body{display:flex;flex-direction:column;min-height:100vh}
[hidden]{display:none!important}
.bg-glow{position:fixed;inset:0;z-index:-1;background:
  radial-gradient(800px 420px at 50% -10%,rgba(16,185,129,.22),transparent 70%),
  radial-gradient(500px 300px at 90% 20%,rgba(34,211,238,.10),transparent 70%),
  linear-gradient(rgba(148,163,184,.05) 1px,transparent 1px) 0 0/48px 48px,
  linear-gradient(90deg,rgba(148,163,184,.05) 1px,transparent 1px) 0 0/48px 48px}
.topbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid var(--line);
  background:rgba(9,9,11,.7);backdrop-filter:blur(10px);position:sticky;top:0;z-index:5}
.brand{font-weight:800;letter-spacing:-.03em;font-size:1.25rem}
.brand span{color:var(--em)}
.brand.big{font-size:2.2rem;text-align:center}
.stats{display:flex;gap:8px;flex-wrap:wrap;margin-left:8px}
.actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.chip{border:1px solid var(--line);background:rgba(30,41,59,.5);border-radius:999px;padding:4px 10px;font-size:.82rem}
.chip.coin{color:var(--warn);border-color:rgba(251,191,36,.35)}
main{flex:1;width:100%;max-width:980px;margin:0 auto;padding:20px 16px}
.screen{animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  backdrop-filter:blur(10px);box-shadow:0 20px 50px -20px rgba(0,0,0,.6)}
.card.narrow{max-width:460px;margin:24px auto}
.center{text-align:center}
.grid2{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media(max-width:760px){.grid2{grid-template-columns:1fr}}
h2{margin:0 0 6px;font-size:1.5rem;letter-spacing:-.02em}
h3{margin:0 0 10px}
.muted{color:var(--muted)} .small{font-size:.85rem}
label{display:block;margin:12px 0;font-size:.88rem;color:var(--muted)}
input,select{width:100%;margin-top:6px;padding:11px 12px;border-radius:10px;border:1px solid #334155;background:#0b1220;color:var(--text);font:inherit}
input:focus,select:focus,.btn:focus-visible,.opt:focus-visible{outline:2px solid var(--em);outline-offset:2px}
.topbar select{width:auto;margin:0;padding:6px 8px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row>label{flex:1;min-width:140px}
.check{display:flex;gap:10px;align-items:flex-start;color:var(--text)}
.check input{width:auto;margin-top:3px}
.btn{cursor:pointer;border:1px solid #334155;border-radius:12px;padding:11px 18px;font:inherit;font-weight:600;color:var(--text);background:#111827;transition:.15s}
.btn:hover{border-color:var(--em)}
.btn.primary{background:linear-gradient(#34d399,#10b981);color:#04130d;border-color:transparent;box-shadow:0 8px 28px -8px rgba(16,185,129,.7);width:100%}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent}
.btn.small{padding:6px 12px;font-size:.85rem}
.btn.big{padding:16px 22px;font-size:1.1rem;margin-top:12px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.tabs{display:flex;gap:6px;margin:16px 0 4px;background:#0b1220;border-radius:12px;padding:4px}
.tab{flex:1;border:0;background:transparent;color:var(--muted);padding:9px;border-radius:9px;font:inherit;font-weight:600;cursor:pointer}
.tab.active{background:#1e293b;color:var(--text)}
.error{color:var(--bad);margin:12px 0 0;font-size:.9rem}
.queue{display:flex;gap:14px;align-items:center;margin-top:16px;padding:14px;border:1px dashed #334155;border-radius:12px}
.queue .btn{margin-left:auto}
.spinner{width:22px;height:22px;border-radius:50%;border:3px solid #334155;border-top-color:var(--em);animation:spin 1s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
.board{list-style:none;margin:0;padding:0;counter-reset:r}
.board li{display:flex;align-items:center;gap:10px;padding:9px 4px;border-bottom:1px solid var(--line);font-size:.95rem}
.board li:last-child{border:0}
.board .rank{width:26px;color:var(--muted);font-variant-numeric:tabular-nums}
.board .nm{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.board .lg{color:var(--cy);font-size:.8rem}
.board .elo{font-variant-numeric:tabular-nums;font-weight:700}
.board li.me{background:rgba(52,211,153,.08);border-radius:8px}
/* game */
.game{padding:18px}
.scorebar{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center}
.player{min-width:0}
.player.opp{text-align:right}
.pname{font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pscore{font-size:1.9rem;font-weight:800;font-variant-numeric:tabular-nums;color:var(--em)}
.player.opp .pscore{color:var(--cy)}
.vs{text-align:center;font-weight:700}
.timer{height:8px;background:#0b1220;border-radius:99px;overflow:hidden;margin:14px 0 6px}
.timer-fill{height:100%;width:100%;background:linear-gradient(90deg,var(--em),var(--cy));transform-origin:left;transition:transform .1s linear}
.timer-fill.low{background:linear-gradient(90deg,var(--warn),var(--bad))}
.statusline{min-height:1.4em;color:var(--muted);font-size:.9rem;text-align:center}
.question{font-size:1.35rem;line-height:1.35;margin:10px 0 16px;text-align:center}
.options{display:grid;gap:10px;grid-template-columns:1fr 1fr}
@media(max-width:620px){.options{grid-template-columns:1fr}}
.opt{cursor:pointer;text-align:start;display:flex;gap:10px;align-items:center;padding:14px;border-radius:12px;border:1px solid #334155;background:#0f172a;color:var(--text);font:inherit;transition:.12s}
.opt .k{width:26px;height:26px;border-radius:8px;background:#1e293b;display:grid;place-items:center;font-size:.8rem;font-weight:700;color:var(--muted);flex:none}
.opt:hover:not(:disabled){border-color:var(--em);transform:translateY(-1px)}
.opt:disabled{cursor:default}
.opt.picked{border-color:var(--cy);box-shadow:0 0 0 2px rgba(34,211,238,.25)}
.opt.right{border-color:var(--em);background:rgba(16,185,129,.18)}
.opt.bad{border-color:var(--bad);background:rgba(244,63,94,.16)}
.gamefoot{display:flex;gap:10px;align-items:center;margin-top:16px;flex-wrap:wrap}
.gamefoot .muted{margin-right:auto}
/* result */
.result-badge{font-size:3rem}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}
.big-num{font-size:2.4rem;font-weight:800;font-variant-numeric:tabular-nums}
.rewards{list-style:none;padding:0;margin:8px 0 18px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.rewards li{border:1px solid var(--line);border-radius:999px;padding:6px 14px;background:rgba(30,41,59,.5)}
.rewards .up{color:var(--em)} .rewards .down{color:var(--bad)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#0b1220;border:1px solid #334155;padding:10px 16px;border-radius:12px;z-index:20;max-width:90vw}
.foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:16px;border-top:1px solid var(--line);font-size:.8rem;color:var(--muted)}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

main.doc{max-width:760px;margin:40px auto;padding:0 16px;line-height:1.6}main.doc h2{margin-top:28px}main.doc a{color:var(--em)}