:root{
  --deep-red: #8B0000;
  --dark-grey: #2E2E2E;
  --light-grey: #D3D3D3;
  --card-bg: #3a3a3a;
}
*{box-sizing:border-box}
body.bg{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;
  background:var(--dark-grey);
  color:var(--light-grey);
}
.topbar{background:linear-gradient(90deg,var(--deep-red),#6f0000);padding:14px 16px;display:flex;align-items:center;box-shadow:0 2px 6px rgba(0,0,0,.4)}
.logo{font-weight:700;font-size:18px}
.container{max-width:900px;margin:28px auto;padding:16px}
.card{background:var(--card-bg);padding:18px;border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,.4);margin-bottom:16px}
h1,h2{margin:6px 0 12px}
.btn{display:inline-block;background:var(--deep-red);color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none;border:none;cursor:pointer;font-weight:600}
.btn.outline{background:transparent;border:1px solid rgba(255,255,255,.08);color:var(--light-grey)}
input,textarea,select{width:100%;padding:10px;border-radius:6px;border:1px solid rgba(255,255,255,.06);background:#2b2b2b;color:var(--light-grey);margin-top:6px;margin-bottom:10px}
.progress{height:10px;background:#222;border-radius:8px;overflow:hidden;margin-bottom:12px}
#progress-bar{width:0;height:100%;background:linear-gradient(90deg,var(--deep-red),#b00000)}
.options{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.option{padding:12px;border-radius:8px;border:1px solid rgba(255,255,255,.04);cursor:pointer;background:#262626;color:var(--light-grey)}
.option.correct{outline:3px solid #2ecc71}
.option.wrong{outline:3px solid #e74c3c;opacity:0.9}
.controls{display:flex;gap:8px;margin-top:12px}
.feedback{margin-top:8px;min-height:24px}
.leaderboard .row{display:flex;justify-content:space-between;padding:10px;border-bottom:1px solid rgba(255,255,255,.03)}
.leaderboard .row.top1{background:linear-gradient(90deg,#ffd70010,transparent)}
.leaderboard .row.top2{background:linear-gradient(90deg,#c0c0c010,transparent)}
.leaderboard .row.top3{background:linear-gradient(90deg,#cd7f3210,transparent)}
.leaderboard-table{width:100%;border-collapse:collapse;margin-top:1rem;color:#ddd}
.leaderboard-table th,.leaderboard-table td{border:1px solid #444;padding:8px;text-align:center}
.leaderboard-table tr:nth-child(even){background-color:#2c2c2c}
.admin-area{display:flex;gap:16px;flex-wrap:wrap}
.admin-panel{flex:1;min-width:300px}
.question-row{display:flex;gap:8px;align-items:center;padding:8px;border-bottom:1px solid rgba(255,255,255,.04)}
.question-row input{flex:1;padding:6px}
small.muted{color:#aaa}
table.questions-table{width:100%;border-collapse:collapse}
table.questions-table th, table.questions-table td{border:1px solid #444;padding:8px}
@media (max-width:600px){
  .topbar{padding:12px}
  .logo{font-size:16px}
  .container{margin:14px;padding:12px}
  .admin-area{flex-direction:column}
}
.hidden{display:none}