:root{--bg-primary: #0a0a0f;--bg-secondary: #12121c;--bg-glass: rgba(18, 18, 28, .6);--text-primary: #f0f0f5;--text-secondary: #a0a0b5;--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-hover: #4f46e5;--danger: #ef4444;--success: #10b981;--warning: #f59e0b;--font-main: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "Fira Code", monospace;--border-color: rgba(255, 255, 255, .1);--shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, .37);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-main);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;background-image:radial-gradient(circle at top right,rgba(99,102,241,.15),transparent 40%),radial-gradient(circle at bottom left,rgba(139,92,246,.1),transparent 40%);background-attachment:fixed}h1,h2,h3,h4{font-weight:600;letter-spacing:-.02em}h1{font-size:2.5rem;margin-bottom:1rem}h2{font-size:1.75rem;margin-bottom:.75rem}h3{font-size:1.25rem;margin-bottom:.5rem}p{line-height:1.6;color:var(--text-secondary);margin-bottom:1rem}.container{width:100%;max-width:1200px;margin:0 auto;padding:2rem}.center-screen{display:flex;justify-content:center;align-items:center;min-height:100vh}.glass-card{background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:2.5rem;box-shadow:var(--shadow-glass)}.input-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.5rem}.input-group label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.input-field{background:#0003;border:1px solid var(--border-color);color:var(--text-primary);padding:.75rem 1rem;border-radius:var(--radius-md);font-family:var(--font-main);font-size:1rem;transition:all .2s ease;outline:none}.input-field:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px #6366f133}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--accent-primary);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-family:var(--font-main);font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 14px #6366f163}.btn:hover{background:var(--accent-hover);transform:translateY(-1px)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary{background:#ffffff0d;box-shadow:none;border:1px solid var(--border-color)}.btn-secondary:hover{background:#ffffff1a}.btn-danger{background:var(--danger);box-shadow:0 4px 14px #ef444463}.btn-danger:hover{background:#dc2626}.text-center{text-align:center}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-4{margin-bottom:2rem}.mt-2{margin-top:1rem}.mt-4{margin-top:2rem}.flex{display:flex}.flex-col{display:flex;flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-2{gap:.5rem}.gap-4{gap:1rem}.w-full{width:100%}.badge{display:inline-block;padding:.25rem .5rem;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;text-transform:uppercase}.badge.danger{background:#ef444433;color:#fca5a5}.badge.success{background:#10b98133;color:#6ee7b7}.badge.warning{background:#f59e0b33;color:#fcd34d}pre{background:#0006;padding:1rem;border-radius:var(--radius-md);overflow-x:auto;font-family:var(--font-mono);font-size:.9rem;border:1px solid var(--border-color);margin-bottom:1rem;color:#e2e8f0}.code-editor-area{font-family:var(--font-mono);background:#1e1e1e;color:#d4d4d4;border:1px solid var(--border-color);border-radius:var(--radius-md);padding:1rem;width:100%;height:400px;resize:vertical;font-size:.95rem;outline:none}.code-editor-area:focus{border-color:var(--accent-primary)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:var(--bg-glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100}.navbar .brand{font-weight:700;font-size:1.25rem;display:flex;align-items:center;gap:.5rem;background:linear-gradient(135deg,#a5b4fc,#818cf8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.exam-layout{display:grid;grid-template-columns:1fr 1fr;gap:2rem;height:calc(100vh - 70px);padding:2rem}.panel{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:2rem;display:flex;flex-direction:column;overflow-y:auto}.error-msg{color:var(--danger);background:#ef44441a;padding:.75rem;border-radius:var(--radius-md);border:1px solid rgba(239,68,68,.2);margin-bottom:1rem;font-size:.9rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .4s ease forwards}.info-box{background:#6366f11a;border-left:4px solid var(--accent-primary);padding:1rem;border-radius:0 var(--radius-md) var(--radius-md) 0;margin-bottom:1.5rem}