:root{--primary: #667eea;--primary-light: #8b9cf7;--primary-dark: #5a67d8;--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--secondary: #f093fb;--secondary-gradient: linear-gradient(135deg, #f093fb 0%, #fbbf24 100%);--accent: #fbbf24;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--info: #3b82f6;--bg-dark: #0f172a;--bg-card: rgba(255, 255, 255, .05);--bg-hover: rgba(255, 255, 255, .08);--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, .37);--glass-blur: blur(12px);--text-main: #f8fafc;--text-muted: #94a3b8;--text-disabled: #64748b;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--transition-fast: .15s ease;--transition-normal: .3s ease;--transition-slow: .5s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-dark);color:var(--text-main);background-image:radial-gradient(at 0% 0%,hsla(253,16%,7%,1) 0,transparent 50%),radial-gradient(at 50% 0%,hsla(225,39%,30%,1) 0,transparent 50%),radial-gradient(at 100% 0%,hsla(339,49%,30%,1) 0,transparent 50%);min-height:100vh;line-height:1.6}#root{min-height:100vh}.glass-card{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--glass-shadow)}.glass-card:hover{border-color:#ffffff26}.btn-primary{background:var(--primary-gradient);color:#fff;border:none;padding:12px 24px;border-radius:var(--radius-md);font-weight:600;font-size:14px;cursor:pointer;box-shadow:0 4px 15px #667eea66;transition:all var(--transition-normal);display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px #667eea80}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:#ffffff1a;color:#fff;border:1px solid var(--glass-border);padding:12px 24px;border-radius:var(--radius-md);font-weight:500;font-size:14px;cursor:pointer;transition:all var(--transition-normal);display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-secondary:hover{background:#ffffff26;border-color:#fff3}.btn-success{background:linear-gradient(135deg,var(--success) 0%,#059669 100%);color:#fff;border:none;padding:12px 24px;border-radius:var(--radius-md);font-weight:600;cursor:pointer;box-shadow:0 4px 15px #10b98166}.btn-danger{background:linear-gradient(135deg,var(--danger) 0%,#dc2626 100%);color:#fff;border:none;padding:12px 24px;border-radius:var(--radius-md);font-weight:600;cursor:pointer;box-shadow:0 4px 15px #ef444466}.input-field{background:#ffffff0d;border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:12px 16px;color:#fff;width:100%;outline:none;font-size:14px;transition:all var(--transition-fast)}.input-field:focus{border-color:var(--primary);background:#ffffff14;box-shadow:0 0 0 3px #667eea1a}.input-field::placeholder{color:var(--text-muted)}.input-field:disabled{opacity:.5;cursor:not-allowed}select.input-field{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:20px;padding-right:44px}select.input-field option{background:var(--bg-dark);color:#fff}label{display:block;margin-bottom:8px;font-size:14px;font-weight:500;color:var(--text-main)}.table-container{overflow-x:auto;border-radius:var(--radius-lg)}table{width:100%;border-collapse:collapse}thead{background:#ffffff0d}th{padding:16px;text-align:left;font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--glass-border)}td{padding:16px;font-size:14px;border-bottom:1px solid rgba(255,255,255,.05)}tbody tr{transition:background var(--transition-fast)}tbody tr:hover{background:#ffffff08}.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:500}.badge-success{background:#10b98126;color:var(--success)}.badge-warning{background:#f59e0b26;color:var(--warning)}.badge-danger{background:#ef444426;color:var(--danger)}.badge-info{background:#3b82f626;color:var(--info)}.badge-primary{background:#667eea26;color:var(--primary)}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3}h1{font-size:32px}h2{font-size:24px}h3{font-size:20px}h4{font-size:18px}h5{font-size:16px}h6{font-size:14px}p{margin-bottom:16px}.dashboard-container{display:flex;min-height:100vh}.sidebar{width:280px;height:100vh;position:sticky;top:0;display:flex;flex-direction:column;padding:var(--spacing-lg);z-index:100}.main-content{flex:1;padding:var(--spacing-xl);overflow-y:auto;max-height:100vh}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#ffffff0d;border-radius:10px}::-webkit-scrollbar-thumb{background:var(--primary-gradient);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--primary-dark)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.fade-in{animation:fadeIn var(--transition-normal)}.slide-up{animation:slideUp var(--transition-slow)}@media (max-width: 768px){.dashboard-container{flex-direction:column}.sidebar{width:100%;height:auto;position:fixed;bottom:0;top:auto;border-radius:var(--radius-xl) var(--radius-xl) 0 0}.main-content{padding:var(--spacing-md);padding-bottom:100px}h1{font-size:24px}h2{font-size:20px}}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--text-muted)}.text-success{color:var(--success)}.text-warning{color:var(--warning)}.text-danger{color:var(--danger)}.mt-1{margin-top:var(--spacing-xs)}.mt-2{margin-top:var(--spacing-sm)}.mt-3{margin-top:var(--spacing-md)}.mt-4{margin-top:var(--spacing-lg)}.mb-1{margin-bottom:var(--spacing-xs)}.mb-2{margin-bottom:var(--spacing-sm)}.mb-3{margin-bottom:var(--spacing-md)}.mb-4{margin-bottom:var(--spacing-lg)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-1{gap:var(--spacing-xs)}.gap-2{gap:var(--spacing-sm)}.gap-3{gap:var(--spacing-md)}.gap-4{gap:var(--spacing-lg)}.grid{display:grid}.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-3{grid-template-columns:repeat(3,1fr)}.grid-cols-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 768px){.grid-cols-2,.grid-cols-3,.grid-cols-4{grid-template-columns:1fr}}.cbt-page{padding:20px}.cbt-page .page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap;gap:16px}.cbt-page .page-header h2{margin:0;font-size:28px;background:linear-gradient(135deg,#667eea,#764ba2);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}.cbt-page .page-header p{margin:4px 0 0;color:var(--text-muted);font-size:14px}.header-actions{display:flex;gap:8px}.btn-toggle{padding:10px 16px;border:2px solid rgba(102,126,234,.3);background:#667eea1a;color:var(--text-muted);border-radius:10px;cursor:pointer;display:flex;align-items:center;gap:8px;font-size:14px;font-weight:500;transition:all .3s ease}.btn-toggle:hover{background:#667eea33;color:var(--text-main)}.btn-toggle.active{background:linear-gradient(135deg,#667eea,#764ba2);border-color:transparent;color:#fff}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;padding:20px;display:flex;align-items:center;gap:16px}.stat-icon{width:56px;height:56px;border-radius:12px;display:flex;align-items:center;justify-content:center}.stat-info{flex:1}.stat-label{margin:0;font-size:12px;color:var(--text-muted)}.stat-value{margin:4px 0 0;font-size:24px;font-weight:700;color:var(--text-main)}.page-actions{margin-bottom:24px}.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}.exam-card .card-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:16px}.exam-card .card-header h3{margin:0;font-size:16px;color:var(--text-main);flex:1}.exam-card .card-body{margin-bottom:16px}.exam-card .card-body p{margin:8px 0;font-size:14px;color:var(--text-muted)}.card-actions{display:flex;gap:8px;margin-top:16px}.btn-icon{background:transparent;border:none;padding:8px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease}.btn-icon:hover{background:#ef44441a}.empty-state-card{grid-column:1 / -1;text-align:center;padding:60px 20px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px}.empty-state-card svg{margin:0 auto 16px}.empty-state-card p{margin:16px 0;color:var(--text-muted)}.questions-table-container{overflow-x:auto;margin-top:24px}.data-table{width:100%;border-collapse:collapse;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:12px;overflow:hidden}.data-table thead{background:#667eea33}.data-table th{padding:14px 16px;text-align:left;font-size:13px;font-weight:600;color:var(--text-main);border-bottom:2px solid var(--glass-border)}.data-table td{padding:14px 16px;font-size:14px;color:var(--text-muted);border-bottom:1px solid rgba(255,255,255,.05)}.data-table tbody tr:hover{background:#667eea1a}.data-table .empty-state{text-align:center;padding:40px;color:var(--text-muted)}.options-input-grid{display:grid;gap:12px}.option-input-item{display:flex;flex-direction:column;gap:8px;padding:12px;background:#667eea0d;border-radius:8px;border:1px solid rgba(102,126,234,.2)}.option-input-item label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-main);cursor:pointer}.option-input-item input[type=text]{width:100%;padding:10px 14px;background:#ffffff0d;border:1px solid var(--glass-border);border-radius:8px;color:var(--text-main);font-size:14px}.cbt-exam-page{padding:20px}.exam-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px;padding:24px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px}.exam-header h2{margin:0 0 8px;font-size:24px;color:var(--text-main)}.exam-header p{margin:4px 0;font-size:14px;color:var(--text-muted)}.exam-content{display:grid;grid-template-columns:1fr 320px;gap:24px}.questions-list{display:flex;flex-direction:column;gap:20px}.question-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:24px}.question-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.question-number{font-size:14px;font-weight:600;color:var(--text-main)}.question-text{font-size:16px;color:var(--text-main);margin:0 0 20px;line-height:1.6}.options-list{display:flex;flex-direction:column;gap:12px}.option-item{display:flex;align-items:center;gap:12px;padding:14px 16px;background:#ffffff0d;border:2px solid var(--glass-border);border-radius:12px;cursor:pointer;transition:all .3s ease}.option-item:hover{background:#667eea1a;border-color:#667eea80}.option-item.selected{background:#667eea33;border-color:#667eea}.option-item input[type=radio]{display:none}.option-label{font-weight:600;color:var(--text-main);min-width:24px}.option-text{color:var(--text-muted);flex:1}.exam-sidebar{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:24px;height:fit-content;position:sticky;top:20px}.exam-info h3{margin:0 0 16px;font-size:18px;color:var(--text-main)}.exam-info p{margin:12px 0;font-size:14px;color:var(--text-muted)}.exam-result-page{display:flex;justify-content:center;align-items:center;min-height:calc(100vh - 100px);padding:20px}.result-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:24px;padding:48px;text-align:center;max-width:500px;width:100%}.result-header{display:flex;flex-direction:column;align-items:center;margin-bottom:32px}.result-header h2{margin:16px 0 0;font-size:28px;color:var(--text-main)}.result-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:32px}.stat-item{background:#667eea1a;padding:20px;border-radius:12px}.stat-item .stat-label{font-size:12px;color:var(--text-muted);margin:0}.stat-item .stat-value{font-size:32px;font-weight:700;margin:4px 0 0}.exam-detail-page{padding:20px}.exam-info-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:24px;margin-bottom:24px}.exam-info-card h3{margin:0 0 20px;font-size:20px;color:var(--text-main)}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.info-item{display:flex;flex-direction:column;gap:4px}.info-label{font-size:12px;color:var(--text-muted)}.info-value{font-size:16px;color:var(--text-main);font-weight:600}.questions-section h3{margin:0 0 16px;font-size:18px;color:var(--text-main)}.questions-grid{display:grid;gap:16px}.question-preview-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:12px;padding:20px}.question-preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.question-preview-text{font-size:15px;color:var(--text-main);margin:0 0 16px;line-height:1.6}.options-preview{display:flex;flex-direction:column;gap:8px}.option-preview{display:flex;align-items:center;gap:12px;padding:10px 14px;background:#ffffff0d;border-radius:8px;font-size:14px}.option-preview.correct{background:#10b98133;border:1px solid rgba(16,185,129,.4)}.option-preview-label{font-weight:600;color:var(--text-main);min-width:24px}.option-preview-text{color:var(--text-muted);flex:1}.action-buttons{margin-top:24px;display:flex;gap:12px}.form-actions{margin-top:24px;display:flex;gap:12px;justify-content:flex-end}@media (max-width: 768px){.exam-content{grid-template-columns:1fr}.exam-sidebar{position:static}.cbt-page .page-header{flex-direction:column;align-items:flex-start}.header-actions{width:100%;overflow-x:auto}.stats-grid,.cards-grid,.result-stats{grid-template-columns:1fr}}