:root{--bg:#f4f7fb;--fg:#0f172a;--card:#fff;--accent-solid:#2563eb;--accent:linear-gradient(135deg,#2563eb,#4f46e5);--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--muted:#64748b;--shadow:0 20px 50px #0000001a}[data-theme=dark]{--bg:#0b1220;--fg:#e6eef8;--card:#0f172a;--accent-solid:#6366f1;--accent:linear-gradient(135deg,#6366f1,#818cf8);--success:#4ade80;--warning:#fbbf24;--danger:#f87171;--muted:#94a3b8;--shadow:0 25px 60px #00000073}*{box-sizing:border-box;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif}#root,body,html{background:#f4f7fb;background:var(--bg);color:#0f172a;color:var(--fg);height:100%;margin:0}.topbar{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fff;background:var(--card);box-shadow:0 20px 50px #0000001a;box-shadow:var(--shadow);display:flex;justify-content:space-between;padding:16px 28px;z-index:50}.navbar,.topbar{align-items:center;position:-webkit-sticky;position:sticky;top:0}.navbar{border-bottom:1px solid #eee;padding:18px 30px;z-index:999}.dark .navbar{background:#0d1117;border-bottom:1px solid #222}.logo-link{color:inherit;text-decoration:none}.nav-buttons{align-items:center;display:flex;gap:12px}.nav-btn{background:#fff;border:1px solid #ddd;border-radius:8px;color:#000;padding:8px 16px;text-decoration:none;transition:.2s}.dark .nav-btn{background:#161b22;border-color:#333;color:#fff}.nav-btn:hover{background:#f0f0f0}.dark .nav-btn:hover{background:#222}.theme-toggle{background:#0d6efd;border:none;border-radius:8px;color:#fff;cursor:pointer;padding:8px 16px}.theme-toggle:hover{opacity:.85}.topbar h1{font-size:22px;font-weight:800;letter-spacing:-.5px;margin:0}.topbar button{background:#0000;border:1px solid #00000014;border-radius:999px;color:#0f172a;color:var(--fg);cursor:pointer;padding:8px 14px;transition:all .25s ease}.topbar button:hover{background:#2563eb;background:var(--accent-solid);color:#fff;transform:translateY(-1px)}.container{margin:60px auto;max-width:1100px;padding:0 20px}.hero{margin-top:120px;text-align:center}.hero h2{font-size:42px;font-weight:900;letter-spacing:-1px;margin-bottom:12px}.hero p{color:#64748b;color:var(--muted);font-size:18px}.mcq-card{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fff;background:var(--card);border-radius:20px;box-shadow:0 20px 50px #0000001a;box-shadow:var(--shadow);margin-bottom:20px;padding:28px;transition:transform .25s ease,box-shadow .25s ease}.mcq-card:hover{box-shadow:0 30px 60px #00000026;transform:translateY(-4px)}.mcq-option{border:1px solid #00000014;border-radius:14px;cursor:pointer;margin:10px 0;padding:14px 16px;transition:all .2s ease}.mcq-option:hover{background:#2563eb14;border-color:#2563eb;border-color:var(--accent-solid)}.correct{background:#22c55e2e;border-color:#22c55e}.btn,.correct{font-weight:600}.btn{background:linear-gradient(135deg,#2563eb,#4f46e5);background:var(--accent);border:none;border-radius:999px;box-shadow:0 12px 30px #2563eb59;color:#fff;cursor:pointer;padding:12px 18px;transition:all .25s ease}.btn:hover{box-shadow:0 18px 40px #2563eb73;transform:translateY(-2px)}ul{padding-left:18px}li{font-size:15px;margin:8px 0}.footer{color:#64748b;color:var(--muted);font-size:14px;margin-top:80px;padding:30px;text-align:center}.stats-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-bottom:30px}.stat-card{background:#fff;background:var(--card);border-radius:18px;box-shadow:0 20px 50px #0000001a;box-shadow:var(--shadow);padding:22px;text-align:center;transition:all .3s ease}.stat-card:hover{transform:translateY(-5px) scale(1.02)}.stat-card h4{color:#64748b;color:var(--muted);font-size:14px;margin:0}.stat-card p{font-size:28px;font-weight:800;margin-top:8px}.stat-card:first-child{border-top:5px solid #2563eb;border-top:5px solid var(--accent-solid)}.stat-card:nth-child(2){border-top:5px solid #22c55e;border-top:5px solid var(--success)}.stat-card:nth-child(3){border-top:5px solid #ef4444;border-top:5px solid var(--danger)}.stat-card p{color:#2563eb;color:var(--accent-solid)}.stat-card:nth-child(2) p{color:#22c55e;color:var(--success)}.stat-card:nth-child(3) p{color:#ef4444;color:var(--danger)}.subject-badges{display:flex;flex-wrap:wrap;gap:10px}.subject-badge{background:#ef444426;border-radius:999px;color:#ef4444;font-size:14px;font-weight:600;padding:8px 14px}.test-history{grid-gap:16px;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.test-card{background:#fff;background:var(--card);border-radius:14px;box-shadow:0 20px 50px #0000001a;box-shadow:var(--shadow);padding:16px 18px;transition:transform .25s ease}.test-card:hover{transform:translateY(-4px)}.test-score{font-size:22px;font-weight:800}.test-meta{color:#64748b;color:var(--muted);font-size:13px;margin-top:4px}.section-title{font-size:20px;font-weight:800;margin-bottom:14px}.fade-in{animation:fadeInUp .6s ease forwards}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.result-wrapper{background:#fff;background:var(--card);border-radius:24px;box-shadow:0 20px 50px #0000001a;box-shadow:var(--shadow);margin:40px auto;max-width:900px;padding:36px}.result-header{flex-direction:column;gap:18px;text-align:center}.result-header,.score-ring{align-items:center;display:flex}.score-ring{background:conic-gradient(#2563eb calc(var(--percent)*1%),#00000014 0);background:conic-gradient(var(--accent-solid) calc(var(--percent)*1%),#00000014 0);border-radius:50%;box-shadow:inset 0 0 0 10px #fff;box-shadow:inset 0 0 0 10px var(--card);height:130px;justify-content:center;width:130px}[data-theme=dark] .score-ring{background:conic-gradient(#2563eb calc(var(--percent)*1%),#ffffff1a 0);background:conic-gradient(var(--accent-solid) calc(var(--percent)*1%),#ffffff1a 0)}.score-ring span{font-size:30px;font-weight:900}.score-meta p{color:#64748b;color:var(--muted);font-size:15px;margin:4px 0}.wrong-section{margin-top:36px}.wrong-card{background:#00000008;border-left:5px solid #2563eb;border-left:5px solid var(--accent-solid);border-radius:18px;margin-bottom:16px;padding:20px;transition:transform .25s ease}[data-theme=dark] .wrong-card{background:#ffffff0a}.wrong-card:hover{transform:translateY(-3px)}.wrong-question{font-weight:700;line-height:1.4;margin-bottom:12px}.wrong-q-index{font-weight:800}.wrong-row{align-items:center;display:flex;font-size:14px;gap:10px;margin:6px 0}.icon{text-align:center;width:20px}.wrong-icon{color:#ef4444}.correct-icon{color:#22c55e}.wrong-label{font-weight:600}.perfect-msg{background:#22c55e26;border-radius:14px;color:#22c55e;font-weight:700;padding:14px}body{background:#f4f6f8;font-family:Segoe UI,sans-serif;margin:0}.dark{background:#0f172a;color:#fff}.navbar{background:#fff;box-shadow:0 2px 8px #0000000d;display:flex;justify-content:space-between;padding:15px 30px}.dark .navbar{background:#111827}.home-container{padding:60px 20px;text-align:center}.title{font-size:42px;font-weight:700}.subtitle{color:#666;margin-top:10px}.card-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:50px}.subject-card{background:#fff;border-radius:12px;box-shadow:0 6px 16px #00000014;color:#000;padding:25px;text-decoration:none;transition:.2s}.subject-card:hover{background:#2563eb;color:#fff;transform:translateY(-5px)}.dark .subject-card{background:#1f2937;color:#fff}
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