:root{
  --bg:#f6f4ff;
  --card:#ffffff;
  --ink:#201b35;
  --muted:#716b86;
  --brand:#6c4ef6;
  --brand-2:#00a7a5;
  --ok:#16a34a;
  --bad:#dc2626;
  --pass:#f59e0b;
  --empty:#d9d4ea;
  --shadow:0 22px 60px rgba(41,31,88,.14);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(circle at top left,#e9e4ff,var(--bg) 38%,#f8fbff);color:var(--ink)}
.app{width:min(1180px,94vw);margin:0 auto;padding:28px 0 40px}
.hero{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-bottom:18px}
.eyebrow{margin:0 0 4px;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;color:var(--brand);font-weight:800}
h1{font-size:clamp(2rem,4vw,4.6rem);line-height:.92;margin:0;letter-spacing:-.06em}.subtitle{color:var(--muted);margin:.65rem 0 0;font-size:1.05rem}
.scoreboard{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0}.team-card{background:rgba(255,255,255,.72);border:2px solid transparent;border-radius:24px;padding:18px 20px;box-shadow:var(--shadow);display:grid;grid-template-columns:1fr auto;align-items:end}.team-card.active{border-color:var(--brand);background:#fff}.team-label{font-weight:800;color:var(--muted)}.team-card strong{font-size:3rem;line-height:1}.team-card small{grid-column:1/-1;color:var(--muted)}
.board{display:grid;grid-template-columns:minmax(360px,560px) 1fr;gap:26px;align-items:center}.rosco-wrap{aspect-ratio:1/1;position:relative}.rosco{position:absolute;inset:0}.letter{position:absolute;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;transform:translate(-50%,-50%);font-weight:900;background:var(--empty);color:#fff;border:4px solid #fff;box-shadow:0 8px 18px rgba(39,30,80,.15);transition:.2s}.letter.current{background:var(--brand);scale:1.18}.letter.ok{background:var(--ok)}.letter.bad{background:var(--bad)}.letter.pass{background:var(--pass)}
.question-card{background:rgba(255,255,255,.85);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.7);border-radius:32px;padding:28px;box-shadow:var(--shadow)}.turn-row{display:flex;justify-content:space-between;align-items:center;gap:10px}.pill,.letter-pill{display:inline-flex;align-items:center;border-radius:999px;font-weight:900}.pill{background:#eeeaff;color:var(--brand);padding:9px 13px}.letter-pill{background:var(--ink);color:#fff;width:48px;height:48px;justify-content:center;font-size:1.35rem}.question{font-size:clamp(1.25rem,2.2vw,2rem);line-height:1.2;font-weight:850;min-height:145px;margin:25px 0 18px}.answer-box{background:#f3f0ff;border-radius:18px;padding:12px 16px;margin-bottom:18px}.answer-box summary{cursor:pointer;font-weight:800}.answer-box p{margin:.5rem 0 0;color:var(--brand);font-weight:900}.controls{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}button,select{font:inherit}button{border:0;border-radius:16px;padding:13px 15px;font-weight:900;cursor:pointer;background:#ebe7f7;color:var(--ink);transition:.15s}button:hover{transform:translateY(-1px)}.primary{background:var(--brand);color:#fff}.ghost{background:transparent;border:2px solid #d8d1ee}.teacher-tools{margin-top:18px;padding-top:16px;border-top:1px solid #e5e0f2;color:var(--muted);font-size:.92rem}.teacher-tools label{font-weight:800;color:var(--ink);margin-right:8px}select{border:1px solid #d8d1ee;border-radius:12px;padding:8px 10px;background:#fff}code{background:#eeeaff;padding:2px 6px;border-radius:8px;color:var(--brand)}
@media (max-width:850px){.hero{align-items:flex-start;flex-direction:column}.board{grid-template-columns:1fr}.rosco-wrap{max-width:520px;margin:auto}.scoreboard{grid-template-columns:1fr}.controls{grid-template-columns:1fr}.letter{width:39px;height:39px;font-size:.9rem}}