:root {
  --navy: #101827;
  --panel: #172236;
  --panel2: #1e2c44;
  --gold: #f2b84b;
  --teal: #39c6b4;
  --text: #f5f7fb;
  --muted: #aab7cb;
  --danger: #ff6b72;
  --ok: #6ee7a5;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 0%, #233d5f 0, var(--navy) 45%, #090f19 100%);
}
.app { width: min(920px, 92%); margin: 0 auto; padding: 42px 0 60px; }
.hero { text-align: center; margin-bottom: 26px; }
.eyebrow { color: var(--gold); font-size: .75rem; font-weight: 800; letter-spacing: .2em; }
.hero h1 { margin: 8px 0; font-size: clamp(2rem, 5vw, 3.4rem); }
.hero > p:last-child { color: var(--muted); margin: 0; }
.panel { background: rgba(23,34,54,.94); border: 1px solid #30425e; border-radius: 18px; padding: 30px; box-shadow: 0 20px 50px #0005; }
.start-screen, .end-screen { text-align: center; max-width: 720px; margin: auto; }
.start-screen p, .end-screen p { color: var(--muted); line-height: 1.7; }
.rules { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin: 24px 0; }
.rules span { background: #0e1727; border: 1px solid #2e415e; border-radius: 999px; padding: 9px 14px; font-size: .9rem; }
button { border: 0; border-radius: 10px; padding: 12px 18px; font: inherit; font-weight: 750; cursor: pointer; transition: .18s ease; }
button:hover { transform: translateY(-1px); }
button:disabled { cursor: default; transform: none; opacity: .72; }
.primary { color: #15191e; background: var(--gold); }
.secondary { color: var(--text); background: transparent; border: 1px solid #49617e; }
.statusbar { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-bottom: 16px; }
.statusbar div { text-align: center; background: var(--panel); border: 1px solid #30425e; padding: 12px; border-radius: 12px; }
.statusbar small { display: block; color: var(--muted); font-size: .68rem; letter-spacing: .14em; }
.statusbar strong { display: block; margin-top: 5px; font-size: 1.2rem; }
.rooms { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.room { padding: 11px 8px; text-align: center; color: #8fa0b9; background: #121c2d; border: 1px solid #293b55; border-radius: 10px; font-size: .84rem; }
.room.active { color: var(--gold); border-color: var(--gold); }
.room.done { color: var(--ok); border-color: #2d7c5a; }
.progress-track { height: 6px; background: #0d1624; border-radius: 20px; overflow: hidden; margin: 12px 0 18px; }
#progressBar { height: 100%; width: 0; background: linear-gradient(90deg,var(--teal),var(--gold)); transition: width .35s ease; }
.question-card { min-height: 390px; }
.question-top { display: flex; justify-content: space-between; gap: 15px; color: var(--muted); font-size: .88rem; align-items: center; }
.badge { color: #101827; background: var(--teal); border-radius: 999px; padding: 6px 10px; font-weight: 800; }
#questionText { line-height: 1.4; margin: 24px 0; }
.answers { display: grid; gap: 10px; }
.answer { width: 100%; text-align: left; color: var(--text); background: var(--panel2); border: 1px solid #354b69; }
.answer:hover:not(:disabled) { border-color: var(--teal); background: #233651; }
.answer.correct { color: #baf5d3; border-color: var(--ok); background: #163d30; }
.answer.wrong { color: #ffd0d2; border-color: var(--danger); background: #49252d; }
.feedback { min-height: 27px; margin: 15px 0 5px; font-weight: 700; }
.feedback.good { color: var(--ok); } .feedback.bad { color: var(--danger); }
.hint-box { margin-top: 12px; border-left: 3px solid var(--gold); background: #2b2a25; color: #f7dba4; padding: 12px 14px; border-radius: 6px; }
.actions { display: flex; justify-content: space-between; gap: 10px; margin-top: 18px; }
.finish-icon { font-size: 4rem; }
.final-score { margin: 20px auto; font-size: 1.3rem; color: var(--gold); }
.hidden { display: none !important; }
@media (max-width: 620px) {
  .app { padding-top: 24px; }
  .panel { padding: 20px; }
  .rooms { grid-template-columns: repeat(2,1fr); }
  .actions { flex-direction: column; }
  .actions button { width: 100%; }
}