:root{--navy:#0f172a;--cyan:#0891b2;--indigo:#4f46e5;--green:#059669;--red:#e11d48;--amber:#d97706;--muted:#64748b;--line:#d9e4eb;--bg:#f0f6fa}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#172b40;font-family:system-ui,-apple-system,"Segoe UI","Noto Sans Devanagari",sans-serif;line-height:1.5}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.4}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #14b8a6;outline-offset:2px}
.topbar{background:#0f172a;color:#fff;padding:19px 20px;border-bottom:4px solid #06b6d4}.brand{max-width:1000px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:15px}.brand strong{font-size:19px;letter-spacing:.3px}.brand small{display:block;color:#a5cdd6;font-size:12px}.pill{display:inline-block;border-radius:99px;background:#cffafe;color:#0c4a6e;padding:5px 12px;font-weight:800;font-size:12px}
.main{max-width:960px;margin:24px auto 60px;padding:0 18px}.hero{border-radius:24px;background:linear-gradient(130deg,#0f172a,#1e3a5f);color:white;padding:32px;box-shadow:0 18px 45px #0f172a23;margin-bottom:22px}.hero h1{font-size:clamp(23px,5vw,37px);line-height:1.18;margin:10px 0}.hero p{color:#cbd5e1;margin:4px 0 0}.eyebrow{text-transform:uppercase;letter-spacing:2px;font-size:12px;font-weight:900;color:#22d3ee}
.panel{background:#fff;border-radius:22px;border:1px solid var(--line);box-shadow:0 7px 22px #0f172a0b;padding:25px;margin-bottom:18px}.panel h2{margin:0 0 15px;font-size:22px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.metric{padding:15px;background:#f8fafc;border:1px solid #dbeafe;border-radius:15px}.metric strong{display:block;font-size:24px;color:#0f172a}.metric span{color:#64748b;font-size:13px}.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.formgrid label{display:block;font-weight:800;margin-bottom:7px}.formgrid select,.formgrid input[type=number]{width:100%;border-radius:12px;padding:12px;border:1px solid #b4c9d9;background:#fff;min-height:46px}.inline{display:flex;gap:9px;flex-wrap:wrap;align-items:center}.quick{background:#e0f2fe;border:1px solid #b6e7f8;border-radius:10px;padding:7px 12px;font-size:13px;color:#075985;font-weight:750}.quick.active{background:#0369a1;color:white}.primary,.secondary,.danger,.ghost{border-radius:12px;border:1px solid transparent;padding:12px 17px;min-height:44px;font-weight:800}.primary{background:#0e7490;color:#fff}.secondary{background:#eef2ff;color:#3730a3;border-color:#c7d2fe}.danger{background:#be123c;color:#fff}.ghost{background:#fff;color:#24445e;border-color:#bad0dd}.primary:hover:not(:disabled){background:#155e75}.small{padding:7px 12px;min-height:37px;font-size:13px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.note{color:#5b7182;font-size:13px}.hindi{font-family:"Noto Sans Devanagari",system-ui,sans-serif;line-height:1.7}.lang-en{display:block}.lang-hi{display:block;margin-top:7px;color:#41546a}.lang-hi:empty{display:none}#app[data-lang="en"] .lang-hi{display:none}#app[data-lang="hi"] .lang-en{display:none}#app[data-lang="hi"] .lang-hi{margin-top:0}
.exam-header{position:sticky;top:0;z-index:5;background:#f0f6faec;backdrop-filter:blur(8px);padding:8px 0 13px;border-bottom:1px solid #d1e4ec;margin-bottom:16px}.progressbar{height:8px;border-radius:10px;background:#dcebf3;overflow:hidden;margin:12px 0}.progressbar>div{height:100%;background:linear-gradient(90deg,#06b6d4,#4f46e5);transition:width .2s}.topline{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.timer{font-size:20px;font-weight:900;color:#0f172a;font-variant-numeric:tabular-nums}.timer.low{color:#be123c}.option{display:flex;gap:12px;align-items:flex-start;border:2px solid #e2e8f0;border-radius:15px;margin-top:12px;padding:13px 14px;background:#fff;min-height:56px;cursor:pointer}.option:has(input:checked){background:#ecfeff;border-color:#0891b2}.option input{width:19px;height:19px;flex-shrink:0;margin-top:4px;accent-color:#0891b2}.optletter{display:inline-flex;border-radius:8px;background:#e2e8f0;min-width:30px;height:30px;align-items:center;justify-content:center;font-size:13px;font-weight:900}.qtext{white-space:pre-line;font-weight:720;line-height:1.65}.qtext .lang-en,.qtext .lang-hi{white-space:pre-line}.question-title{font-size:20px;margin:18px 0}.concept-diagram{display:block;max-width:100%;height:auto;margin:13px auto;overflow:visible;border-radius:12px}.diagram-box{background:#f1faff;border:1px solid #cdebf7;border-radius:16px;padding:10px;margin:16px 0}.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:9px}.pal-item{font-size:13px;min-height:45px;border:2px solid #cbd5e1;background:#fff;border-radius:11px;font-weight:800}.pal-item.answered{background:#d1fae5;border-color:#059669}.pal-item.review{border-color:#f59e0b;border-style:dashed;background:#fef3c7}.pal-item.current{box-shadow:0 0 0 3px #4f46e5;outline-offset:2px}.legend{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px;color:#475569;font-size:12px}.badge-type{font-size:12px;color:#075985;font-weight:900;text-transform:uppercase;letter-spacing:1px}.score-ring{height:150px;width:150px;border-radius:50%;display:grid;place-items:center;margin:0 auto;border:15px solid #0891b2;color:#164e63;text-align:center}.score-ring strong{font-size:27px;display:block}.status{font-weight:800}.status.good{color:#047857}.status.bad{color:#be123c}.review-card{border:1px solid #cbd5e1;border-radius:17px;padding:19px;margin:16px 0;background:#fff}.review-card .correct{border-left:4px solid #059669;padding-left:12px}.review-card .wrong{border-left:4px solid #e11d48;padding-left:12px}.feedback{background:#f8fafc;border-radius:12px;padding:12px;margin:10px 0;border:1px solid #e2e8f0}.feedback p{margin:5px 0}.footer{max-width:960px;margin:25px auto;color:#64748b;font-size:13px;padding:0 18px 35px}.muted{color:var(--muted)}.text-sm{font-size:13px}.sep{border:none;border-top:1px solid #e2e8f0;margin:18px 0}.history-row{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid #e2e8f0;padding:11px 0}.hidden{display:none!important}
@media(max-width:600px){.main{padding:0 11px;margin:14px auto 30px}.hero{padding:22px}.panel{padding:17px}.metrics{grid-template-columns:repeat(3,1fr);gap:7px}.metric{padding:10px}.metric strong{font-size:18px}.metric span{font-size:11px}.formgrid{grid-template-columns:1fr}.brand strong{font-size:16px}.brand small{font-size:10px}.option{padding:11px}.question-title{font-size:18px}.actions{display:grid;grid-template-columns:1fr 1fr}.actions button{min-width:0}.score-ring{height:125px;width:125px}}
@media print{body{background:#fff}.topbar,.footer,.print-hide{display:none!important}.main{margin:0;padding:0;max-width:100%}.panel{box-shadow:none}.exam-header{position:static}}