:root{color-scheme:dark;--bg:#050a14;--panel:#0d192c;--panel2:#12233b;--line:#263b57;--text:#f3f8fd;--muted:#93a8bf;--cyan:#4de4d2;--lime:#c9ff68;--amber:#ffc85c;--red:#ff6176;--shadow:0 28px 80px #0007}*{box-sizing:border-box}html{min-height:100%;background:var(--bg)}body{min-height:100vh;margin:0;color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:radial-gradient(circle at 12% 4%,#123853,transparent 31rem),radial-gradient(circle at 90% 92%,#192858,transparent 36rem),linear-gradient(145deg,#050914,#091527 56%,#060c18)}body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.2;background-image:linear-gradient(#ffffff08 1px,transparent 1px),linear-gradient(90deg,#ffffff08 1px,transparent 1px);background-size:32px 32px;mask-image:linear-gradient(#000,transparent 90%)}[hidden]{display:none!important}button,input,select{font:inherit}a{color:inherit;text-decoration:none}.hud,.admin-top{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:minmax(210px,1.2fr) repeat(3,minmax(120px,.55fr));gap:10px;padding:12px clamp(14px,3vw,38px);border-bottom:1px solid var(--line);background:#050d19ec;backdrop-filter:blur(18px)}.brand,.metric{min-width:0;padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:#ffffff08}.brand{display:flex;align-items:center;gap:11px}.brand-mark{display:grid;place-items:center;width:36px;height:36px;flex:none;border-radius:11px;color:#06111f;font-weight:1000;background:linear-gradient(135deg,var(--lime),var(--cyan))}.brand small,.metric small{display:block;margin-bottom:2px;color:var(--muted);font-size:.69rem;letter-spacing:.08em;text-transform:uppercase}.brand strong,.metric strong{display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-variant-numeric:tabular-nums}.shell,.admin-shell{width:min(1080px,calc(100% - 28px));margin:auto;padding:clamp(32px,6vw,72px) 0}.panel{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:26px;background:linear-gradient(155deg,#11213bf4,#081423f8);box-shadow:var(--shadow)}.entry-layout{display:grid;grid-template-columns:1.15fr .85fr;min-height:600px}.hero,.form-card{padding:clamp(28px,5vw,58px)}.hero{display:flex;flex-direction:column;justify-content:space-between;border-right:1px solid var(--line);background:linear-gradient(145deg,#4de4d20e,transparent 54%)}.eyebrow{display:inline-flex;width:fit-content;padding:7px 10px;border:1px solid #c9ff6840;border-radius:999px;color:var(--lime);background:#c9ff6812;font-size:.76rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}h1,h2,p{margin-top:0}h1{margin:18px 0;font-size:clamp(2.6rem,7vw,5.4rem);line-height:.92;letter-spacing:-.055em}h1 span{color:var(--cyan)}.hero>div>p{max-width:620px;color:#c7d7e5;font-size:1.12rem;line-height:1.65}.rule-grid{display:grid;gap:10px}.rule-grid div{display:grid;grid-template-columns:38px 1fr;gap:10px;align-items:center;color:#c9d7e4;font-size:.9rem;line-height:1.45}.rule-grid b{display:grid;place-items:center;width:34px;height:34px;border:1px solid #4de4d240;border-radius:10px;color:var(--cyan);background:#4de4d212}.form-card{align-self:center}.form-card h2,.codes-card h2,.leaderboard-card h2{font-size:1.9rem;margin-bottom:8px}.form-card>p,.codes-card>p,.table-head p{color:var(--muted);line-height:1.55}label{display:block;margin-top:18px;color:#dce9f4;font-size:.84rem;font-weight:800}input,select{width:100%;min-height:50px;margin-top:8px;padding:0 14px;border:1px solid #98aac04c;border-radius:13px;outline:0;color:var(--text);background:#020c17a8}input:focus,select:focus{border-color:var(--cyan);box-shadow:0 0 0 4px #4de4d21b}.primary,.secondary{display:inline-flex;justify-content:center;align-items:center;min-height:50px;padding:0 18px;border-radius:13px;cursor:pointer;font-weight:900;transition:.16s}.primary{width:100%;margin-top:22px;border:0;color:#071522;background:linear-gradient(135deg,var(--lime),var(--cyan));box-shadow:0 13px 32px #4de4d225}.secondary{border:1px solid var(--line);color:var(--text);background:#ffffff0e}.primary:hover,.secondary:hover{transform:translateY(-1px)}button:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.compact{width:auto;min-height:40px;margin:0;padding:0 14px}.message{min-height:22px;margin-top:12px;font-size:.85rem;font-weight:750}.message.error{color:var(--red)}.flag-line{display:grid;grid-template-columns:repeat(10,1fr);gap:8px;margin-bottom:18px}.flag{display:grid;place-items:center;min-height:42px;border:1px solid var(--line);border-radius:11px;color:#71869b;background:#ffffff06;font-weight:900}.flag.current{color:#06111f;background:var(--amber);border-color:var(--amber)}.flag.green{color:#06111f;background:var(--lime);border-color:var(--lime)}.flag.red{color:#fff;background:var(--red);border-color:var(--red)}.challenge{padding:clamp(24px,5vw,50px)}.challenge-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:28px}.challenge h2{margin:8px 0 0;font-size:clamp(2rem,5vw,3.6rem);line-height:1;letter-spacing:-.045em}.source{flex:none;padding:9px 11px;border:1px solid var(--line);border-radius:10px;color:var(--muted);background:#ffffff08;font:700 .73rem ui-monospace,Consolas,monospace}.problem{max-width:900px;margin-bottom:26px;color:#eaf3fb;font-size:clamp(1.08rem,2.4vw,1.4rem);line-height:1.68}.answer-box{padding:clamp(18px,3vw,28px);border:1px solid var(--line);border-radius:18px;background:#020c177a}.answer-box .prompt{font-weight:850}.answer-row{display:grid;grid-template-columns:1fr auto;gap:10px}.answer-row .primary{width:auto;min-width:160px;margin:8px 0 0}.choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.choice{position:relative;min-height:58px;margin:0;padding:14px 15px 14px 46px;border:1px solid #98aac03c;border-radius:13px;cursor:pointer;background:#ffffff08;font-size:.9rem}.choice input{position:absolute;opacity:0}.choice:before{content:"";position:absolute;left:15px;top:50%;width:17px;height:17px;border:2px solid #70869c;border-radius:50%;transform:translateY(-50%)}.choice:has(input:checked){border-color:var(--cyan);background:#4de4d217}.choice:has(input:checked):before{border:5px solid var(--cyan)}.choice-submit{margin-top:14px}.feedback{min-height:26px;margin-top:14px;color:var(--muted);font-weight:800}.feedback.good{color:var(--lime)}.feedback.bad{color:var(--red)}.attempts{display:flex;justify-content:space-between;gap:15px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.8rem}.dots{display:flex;gap:7px}.dot{width:11px;height:11px;border-radius:50%;background:#294259}.dot.used{background:var(--red)}.attempt-log{margin:12px 0 0;padding:0;list-style:none;color:var(--muted);font-size:.79rem}.finish{max-width:720px;margin:auto;padding:clamp(30px,6vw,62px);text-align:center}.finish h2{margin:16px 0 10px;font-size:clamp(2.6rem,7vw,5rem)}.finish>p{color:var(--muted);font-size:1.05rem;line-height:1.6}.receipt{width:fit-content;margin:26px auto;padding:16px 24px;border:1px solid var(--line);border-radius:15px;background:#ffffff08}.receipt small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.receipt strong{display:block;margin-top:5px;font:900 1.5rem ui-monospace,Consolas,monospace}.finish .secondary{margin-top:8px}footer{width:min(1080px,calc(100% - 28px));margin:auto;padding:0 0 30px;color:#71869a;font-size:.75rem;text-align:center}
.admin-top{display:flex;justify-content:space-between;align-items:center}.admin-body h1{font-size:clamp(2.6rem,6vw,4.8rem)}.login-card{max-width:620px;margin:4vh auto;padding:clamp(30px,6vw,58px)}.login-card>p{color:var(--muted);line-height:1.6}.admin-heading,.table-head,.codes-head,.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px}.admin-heading h1{margin-bottom:0}.toolbar select{width:auto;min-width:190px;margin:0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0}.stat{padding:18px;border:1px solid var(--line);border-radius:16px;background:#ffffff08}.stat small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.07em}.stat strong{display:block;margin-top:4px;font-size:2rem}.admin-grid{display:grid;grid-template-columns:330px 1fr;gap:18px;align-items:start}.codes-card,.leaderboard-card{padding:24px}.codes-card .primary{margin-top:16px}.codes-head{margin:22px 0 10px}pre{max-height:290px;margin:0;padding:14px;border:1px solid var(--line);border-radius:12px;overflow:auto;color:var(--lime);background:#020c17;font:750 .86rem ui-monospace,Consolas,monospace}.table-head{margin-bottom:16px}.table-head h2{margin-bottom:3px}.table-head p{margin:0;font-size:.78rem}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}table{width:100%;min-width:720px;border-collapse:collapse}th,td{padding:12px 13px;text-align:left;border-bottom:1px solid var(--line);font-size:.84rem}th{color:var(--muted);font-size:.69rem;letter-spacing:.06em;text-transform:uppercase;background:#ffffff06}tr:last-child td{border:0}.pill{display:inline-flex;padding:4px 8px;border-radius:999px;font-size:.7rem;font-weight:850;text-transform:uppercase}.pill.complete{color:#06111f;background:var(--lime)}.pill.active{color:#06111f;background:var(--amber)}
@media(max-width:840px){.hud{grid-template-columns:1fr 1fr}.brand{grid-column:1/-1}.entry-layout,.admin-grid{grid-template-columns:1fr}.hero{border-right:0;border-bottom:1px solid var(--line)}.stats-grid{grid-template-columns:1fr 1fr}.admin-heading{align-items:flex-start;flex-direction:column}.toolbar{width:100%}.toolbar select{flex:1}.challenge-head{display:block}.source{display:inline-block;margin-top:14px}}@media(max-width:580px){.choices,.answer-row{grid-template-columns:1fr}.answer-row .primary{width:100%}.stats-grid{grid-template-columns:1fr}.flag-line{gap:4px}.flag{min-height:34px;border-radius:8px;font-size:.72rem}.toolbar{align-items:stretch;flex-direction:column}.toolbar select{width:100%}}