:root{--primary-navy: #173F80;--secondary-blue: #2868C7;--accent-cyan: #16B8C4;--app-bg: #F5F7FB;--card-bg: #FFFFFF;--text-main: #17243B;--text-secondary: #718096;--success-color: #16A36A;--warning-color: #E9A23B;--danger-color: #DC4C5B;--border-color: #E7ECF3;--primary-600: #173F80;--primary-700: #102d5c;--primary-500: #2868C7;--primary-100: #e8f0fe;--primary-50: #f0f5fc;--slate-50: #F5F7FB;--slate-100: #f1f5f9;--slate-200: #E7ECF3;--slate-300: #cbd5e1;--slate-400: #94a3b8;--slate-500: #718096;--slate-600: #475569;--slate-700: #334155;--slate-800: #17243B;--slate-900: #0d172a;--success-bg: #eaf8f1;--success-text: #16A36A;--success-border: #bbf0d7;--warning-bg: #fef7ec;--warning-text: #d97706;--warning-border: #fce4b8;--danger-bg: #fdf2f3;--danger-text: #DC4C5B;--danger-border: #f9cbcf;--info-bg: #e8f9fa;--info-text: #0e858f;--card-shadow: 0 2px 10px rgba(23, 63, 128, .04), 0 1px 3px rgba(0, 0, 0, .03);--card-shadow-hover: 0 10px 24px rgba(23, 63, 128, .08), 0 3px 6px rgba(0, 0, 0, .04);--modal-shadow: 0 20px 30px rgba(17, 36, 68, .16);--font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-display: "Outfit", sans-serif;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:#f1f5f9;color:var(--slate-800);line-height:1.5;-webkit-font-smoothing:antialiased;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;color:var(--slate-900)}a{color:var(--primary-600);text-decoration:none;transition:color .15s ease}a:hover{color:var(--primary-800)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-main);font-size:.875rem;font-weight:600;padding:8px 16px;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);text-decoration:none;line-height:1.25}.btn:disabled{opacity:.6;cursor:not-allowed;pointer-events:none}.btn-primary{background:linear-gradient(135deg,var(--primary-600) 0%,var(--primary-800) 100%);color:#fff;box-shadow:0 2px 4px #2563eb33}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-700) 0%,var(--primary-900) 100%);box-shadow:0 4px 8px #2563eb59;transform:translateY(-1px)}.btn-secondary{background-color:var(--slate-100);color:var(--slate-700);border-color:var(--slate-200)}.btn-secondary:hover{background-color:var(--slate-200);color:var(--slate-900)}.btn-outline-primary{background-color:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe;font-weight:600;transition:all .18s cubic-bezier(.4,0,.2,1)}.btn-outline-primary:hover{background:linear-gradient(135deg,#2563eb 0%,#1d4ed8 100%);color:#fff;border-color:#1d4ed8;box-shadow:0 4px 10px #2563eb47;transform:translateY(-1px)}.btn-outline-danger{background-color:#fef2f2;color:#dc2626;border:1px solid #fecaca;font-weight:600;transition:all .18s cubic-bezier(.4,0,.2,1)}.btn-outline-danger:hover{background:linear-gradient(135deg,#ef4444 0%,#dc2626 100%);color:#fff;border-color:#dc2626;box-shadow:0 4px 10px #dc262647;transform:translateY(-1px)}.btn-outline-success{background-color:#f0fdf4;color:#15803d;border:1px solid #bbf7d0;font-weight:600;transition:all .18s cubic-bezier(.4,0,.2,1)}.btn-outline-success:hover{background:linear-gradient(135deg,#10b981 0%,#059669 100%);color:#fff;border-color:#059669;box-shadow:0 4px 10px #10b98147;transform:translateY(-1px)}.btn-outline-warning{background-color:#fffbeb;color:#b45309;border:1px solid #fde68a;font-weight:600;transition:all .18s cubic-bezier(.4,0,.2,1)}.btn-outline-warning:hover{background:linear-gradient(135deg,#f59e0b 0%,#d97706 100%);color:#fff;border-color:#d97706;box-shadow:0 4px 10px #d9770647;transform:translateY(-1px)}.btn-danger{background:linear-gradient(135deg,#ef4444 0%,#dc2626 100%);color:#fff;border:1px solid #dc2626;box-shadow:0 2px 4px #dc262633}.btn-danger:hover{background:linear-gradient(135deg,#dc2626 0%,#b91c1c 100%);transform:translateY(-1px);box-shadow:0 4px 10px #dc262659}.btn-success{background:linear-gradient(135deg,#10b981 0%,#059669 100%);color:#fff;border:1px solid #059669;box-shadow:0 2px 4px #10b98133}.btn-success:hover{background:linear-gradient(135deg,#059669 0%,#047857 100%);transform:translateY(-1px);box-shadow:0 4px 10px #10b98159}.btn-group{display:inline-flex;align-items:center;gap:8px;flex-wrap:nowrap}.btn-sm{padding:6px 12px;font-size:.8rem;font-weight:600;border-radius:7px;display:inline-flex;align-items:center;gap:6px}.btn-icon{width:32px;height:32px;padding:0;border-radius:7px;display:inline-flex;align-items:center;justify-content:center}.card{background:#ffffff;border-radius:12px;border:1px solid var(--slate-200);box-shadow:var(--card-shadow);padding:24px;transition:all .2s ease}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--slate-100)}.card-title{font-size:1.15rem;font-weight:700;color:var(--slate-800)}.form-group{margin-bottom:16px}.form-label{display:block;font-size:.825rem;font-weight:600;color:var(--slate-700);margin-bottom:6px}.form-label .required{color:#ef4444;margin-left:2px}.form-control,.form-select{width:100%;font-family:var(--font-main);font-size:.875rem;padding:9px 13px;border-radius:8px;border:1px solid var(--slate-300);background-color:#fff;color:var(--slate-800);outline:none;transition:border-color .15s ease,box-shadow .15s ease}.form-control:focus,.form-select:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px #3b82f626}.form-error{color:#ef4444;font-size:.775rem;margin-top:4px;display:flex;align-items:center;gap:4px}.table-responsive{width:100%;overflow-x:auto;border-radius:8px;border:1px solid var(--slate-200)}.table{width:100%;border-collapse:collapse;text-align:left;font-size:.875rem}.table th{background-color:var(--slate-50);color:var(--slate-600);font-weight:600;font-size:.775rem;text-transform:uppercase;letter-spacing:.05em;padding:12px 16px;border-bottom:1px solid var(--slate-200);white-space:nowrap}.table td{padding:13px 16px;border-bottom:1px solid var(--slate-100);color:var(--slate-700);vertical-align:middle}.table tr:hover td{background-color:#f8fafc}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;font-size:.725rem;font-weight:600;border-radius:20px;text-transform:capitalize}.badge-success{background-color:var(--success-bg);color:var(--success-text);border:1px solid var(--success-border)}.badge-danger{background-color:var(--danger-bg);color:var(--danger-text);border:1px solid var(--danger-border)}.badge-warning{background-color:var(--warning-bg);color:var(--warning-text);border:1px solid var(--warning-border)}.badge-primary{background-color:var(--primary-50);color:var(--primary-700);border:1px solid var(--primary-200)}.badge-secondary{background-color:var(--slate-100);color:var(--slate-600);border:1px solid var(--slate-200)}.modal-backdrop{position:fixed;inset:0;background-color:#0f172a80;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1050;padding:16px}.modal-content{background:#ffffff;border-radius:14px;box-shadow:var(--modal-shadow);width:100%;max-width:600px;max-height:90vh;display:flex;flex-direction:column;overflow:hidden;animation:modalIn .2s cubic-bezier(.16,1,.3,1)}.modal-content.modal-lg{max-width:860px}.modal-content.modal-xl{max-width:1050px}.modal-header{padding:18px 24px;border-bottom:1px solid var(--slate-200);display:flex;align-items:center;justify-content:space-between}.modal-body{padding:24px;overflow-y:auto;flex:1}.modal-footer{padding:14px 24px;border-top:1px solid var(--slate-200);display:flex;align-items:center;justify-content:flex-end;gap:12px;background-color:var(--slate-50)}@keyframes modalIn{0%{opacity:0;transform:scale(.96) translateY(-10px)}to{opacity:1;transform:scale(1) translateY(0)}}.pagination-container{display:flex;align-items:center;justify-content:space-between;padding:16px 4px 4px;font-size:.85rem;color:var(--slate-600)}.pagination-controls{display:flex;gap:6px}.page-btn{padding:6px 12px;border-radius:6px;border:1px solid var(--slate-300);background:#ffffff;color:var(--slate-700);cursor:pointer;font-weight:500;transition:all .15s ease}.page-btn.active{background-color:var(--primary-600);color:#fff;border-color:var(--primary-600)}.page-btn:hover:not(.active):not(:disabled){background-color:var(--slate-100)}.page-btn:disabled{opacity:.4;cursor:not-allowed}.state-container{text-align:center;padding:48px 24px;color:var(--slate-500)}.state-icon{font-size:3rem;margin-bottom:12px;color:var(--slate-400)}.spinner{display:inline-block;width:28px;height:28px;border:3px solid rgba(59,130,246,.2);border-radius:50%;border-top-color:var(--primary-600);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast-container{position:fixed;top:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:10px;max-width:400px;pointer-events:none}.toast{pointer-events:auto;padding:12px 18px;border-radius:10px;box-shadow:0 10px 15px -3px #0000001a;display:flex;align-items:center;gap:12px;color:#fff;font-size:.875rem;font-weight:500;animation:slideInRight .3s ease}.toast-success{background-color:#059669}.toast-error{background-color:#dc2626}.toast-info{background-color:#2563eb}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.tabs-container{display:flex;gap:8px;border-bottom:2px solid var(--border-color);margin-bottom:24px}.tab-btn{padding:10px 20px;background:transparent;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;font-weight:600;color:var(--text-secondary);font-size:.9rem;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .2s ease}.tab-btn:hover{color:var(--primary-navy)}.tab-btn.active{color:var(--primary-navy);border-bottom-color:var(--primary-navy)}.wizard-steps{display:flex;justify-content:space-between;position:relative;margin-bottom:32px}.wizard-steps:before{content:"";position:absolute;top:20px;left:40px;right:40px;height:3px;background:var(--border-color);z-index:1}.wizard-step{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer}.wizard-step .step-circle{width:42px;height:42px;border-radius:50%;background:#ffffff;border:2px solid var(--border-color);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem;transition:all .25s ease}.wizard-step .step-title{font-size:.85rem;font-weight:600;color:var(--text-secondary)}.wizard-step.active .step-circle{background:var(--primary-navy);border-color:var(--primary-navy);color:#fff;box-shadow:0 0 0 4px #173f8026}.wizard-step.active .step-title{color:var(--primary-navy)}.wizard-step.completed .step-circle{background:var(--success-color);border-color:var(--success-color);color:#fff}.wizard-step.completed .step-title{color:var(--success-color)}.question-live-preview{background:#ffffff;border:1px solid var(--border-color);border-radius:var(--radius-md);padding:20px;box-shadow:var(--card-shadow)}.question-live-preview .preview-badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.75rem;font-weight:600;background:#e8f0fe;color:var(--secondary-blue);margin-bottom:12px}.question-live-preview .preview-stem{font-size:1.05rem;font-weight:600;color:var(--text-main);line-height:1.6;margin-bottom:16px}.question-live-preview .preview-options{display:flex;flex-direction:column;gap:10px}.question-live-preview .preview-opt-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--border-color);background:#fafcff;transition:all .15s ease}.question-live-preview .preview-opt-item .opt-letter{width:28px;height:28px;border-radius:50%;background:#e2e8f0;color:var(--text-main);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem}.question-live-preview .preview-opt-item.correct{background:var(--success-bg);border-color:var(--success-border);color:var(--success-text)}.question-live-preview .preview-opt-item.correct .opt-letter{background:var(--success-color);color:#fff}.question-live-preview .preview-explanation{margin-top:16px;padding:12px 16px;border-radius:var(--radius-sm);background:#f8fafc;border-left:4px solid var(--accent-cyan);font-size:.875rem;color:var(--text-secondary)}