*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;color:#f8fafc;background:radial-gradient(circle at top,#173b72 0,#081226 45%,#050914 100%);min-height:100vh}.nav{height:64px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #23324f;background:rgba(3,8,20,.82);backdrop-filter:blur(10px);position:sticky;top:0;z-index:5}.brand{font-size:20px;font-weight:900;color:#fff;text-decoration:none}.brand span{margin-left:6px}.navlinks{display:flex;gap:16px}.nav a{color:#dbeafe;text-decoration:none}.wrap{max-width:1080px;margin:auto;padding:24px 16px}.hero{text-align:center;padding:42px 10px 24px}.hero h1{font-size:clamp(38px,8vw,72px);margin:0;background:linear-gradient(90deg,#ffd43b,#fff,#8ee8ff);-webkit-background-clip:text;color:transparent}.hero p{color:#a9b7d0;font-size:18px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.card{background:linear-gradient(145deg,#13264b,#0b1730);border:1px solid #28436d;border-radius:20px;padding:20px;box-shadow:0 18px 40px rgba(0,0,0,.2)}.card h2,.card h3{margin-top:0}.level{cursor:pointer;transition:.2s}.level:hover{transform:translateY(-4px);border-color:#4ade80}.icon{font-size:42px}.btn{display:inline-block;border:0;border-radius:13px;padding:13px 18px;background:linear-gradient(135deg,#16a34a,#22c55e);color:white;font-weight:800;text-decoration:none;cursor:pointer}.btn.blue{background:linear-gradient(135deg,#2563eb,#06b6d4)}.btn.gold{background:linear-gradient(135deg,#f59e0b,#facc15);color:#201000}.btn.red{background:#dc2626}.btn.full{width:100%;text-align:center}.form{max-width:520px;margin:25px auto}.input,.select{width:100%;padding:14px;border-radius:12px;border:1px solid #33496d;background:#071226;color:#fff;margin:7px 0 15px;font-size:16px}.game{max-width:760px;margin:20px auto}.game-top{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}.stat{padding:12px;border:1px solid #29456f;border-radius:13px;background:#0b1933;text-align:center;font-weight:800}.progress{height:8px;background:#1d2c47;border-radius:9px;overflow:hidden;margin:12px 0 24px}.progress>div{height:100%;background:linear-gradient(90deg,#22c55e,#84cc16);transition:.3s}.question{font-size:25px;font-weight:850;line-height:1.35;margin:18px 0}.answers{display:grid;gap:12px}.answer{width:100%;padding:16px;text-align:left;border:1px solid #304d78;border-radius:15px;background:#0c1b36;color:#fff;font-size:17px;cursor:pointer}.answer:hover{border-color:#60a5fa;background:#11284d}.answer.correct{background:#14532d;border-color:#4ade80}.answer.wrong{background:#7f1d1d;border-color:#f87171}.feedback{margin-top:15px;padding:14px;border-radius:13px;background:#10233e;color:#dbeafe}.center{text-align:center}.score{font-size:56px;font-weight:900;color:#facc15}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:13px;border-bottom:1px solid #263b5c;text-align:left}.rank{font-weight:900;color:#facc15}.flash{padding:12px;border-radius:10px;margin-bottom:15px;background:#102a4d}.flash.error{background:#4c1d1d}.flash.success{background:#14532d}.footer{text-align:center;color:#7383a0;padding:35px 15px}.admin-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}.small{font-size:13px;color:#91a1bc}.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}.badge{display:inline-block;padding:7px 10px;border-radius:999px;background:#1e3a8a;margin:3px}.danger{color:#fecaca}@media(max-width:800px){.grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:520px){.navlinks{gap:8px;font-size:13px}.grid{grid-template-columns:1fr}.two{grid-template-columns:1fr}.question{font-size:21px}.game-top{grid-template-columns:1fr 1fr 1fr}.stat{font-size:13px}}