:root{--color-primary: #054A91;--color-primary-light: #2c6ca8;--color-primary-dark: #032d5e;--color-secondary: #81A4CD;--color-accent: #F17300;--color-accent-light: #ff8c2b;--color-accent-dark: #c45d00;--bg-main: #ffffff;--bg-secondary: #DBE4EE;--bg-sidebar: #054A91;--text-primary: #054A91;--text-primary: #0e2a47;--text-secondary: #5a708a;--text-light: #ffffff;--text-muted: #81A4CD;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--color-info: #3b82f6;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease;--sidebar-width: 260px;--sidebar-collapsed-width: 70px;--header-height: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe 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infinite}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.Toastify__toast{border-radius:var(--radius-md)!important;font-family:inherit!important}.page-placeholder{display:flex;align-items:center;justify-content:center;min-height:400px;background:var(--bg-main);border-radius:var(--radius-xl);font-size:1.25rem;color:var(--text-secondary);box-shadow:var(--shadow-sm)}:root{--toastify-color-light: #fff;--toastify-color-dark: #121212;--toastify-color-info: #3498db;--toastify-color-success: #07bc0c;--toastify-color-warning: #f1c40f;--toastify-color-error: hsl(6, 78%, 57%);--toastify-color-transparent: rgba(255, 255, 255, .7);--toastify-icon-color-info: var(--toastify-color-info);--toastify-icon-color-success: var(--toastify-color-success);--toastify-icon-color-warning: 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#4ade8066}.features-list{list-style:none;padding:0;margin-top:1.5rem}.features-list li{padding:.7rem 0;border-bottom:1px solid #e2e8f0;color:#475569}.features-list li:last-child{border-bottom:none}.course-content-preview{padding:4rem 2rem}.course-content-preview .container{max-width:1000px;margin:0 auto}.course-content-preview h2{text-align:center;margin-bottom:2rem;color:#1e293b}.learning-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.learning-item{background:#fff;padding:1.5rem;border-radius:12px;display:flex;align-items:center;gap:1rem;box-shadow:0 2px 10px #0000000d}.learning-item .icon{font-size:2rem}.user-greeting{color:#fff;font-weight:500}.loading,.not-found{padding:4rem;text-align:center;color:#64748b}@media(max-width:900px){.course-hero .hero-content{grid-template-columns:1fr}.hero-card{max-width:400px;margin:0 auto}.hero-text h1{font-size:1.8rem}}/�*� �M�a�r�k�d�o�w�n� �C�o�n�t�e�n�t� �S�t�y�l�e�s� �*�/� � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �{� � � � � � �c�o�l�o�r�:� �v�a�r�(�-�-�t�e�x�t�-�s�e�c�o�n�d�a�r�y�)�;� � � � � � �f�o�n�t�-�s�i�z�e�:� �1�.�1�r�e�m�;� � � � � � �l�i�n�e�-�h�e�i�g�h�t�:� �1�.�6�;� � � � � � �m�a�r�g�i�n�-�b�o�t�t�o�m�:� �2�r�e�m�;� � �}� � � � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �h�1�,� � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �h�2�,� � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �h�3� �{� � � � � � �c�o�l�o�r�:� �v�a�r�(�-�-�t�e�x�t�-�p�r�i�m�a�r�y�)�;� � � � � � �m�a�r�g�i�n�-�t�o�p�:� �1�.�5�r�e�m�;� � � � � � �m�a�r�g�i�n�-�b�o�t�t�o�m�:� �1�r�e�m�;� � � � � � �f�o�n�t�-�w�e�i�g�h�t�:� �7�0�0�;� � �}� � � � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �h�2� �{� � � � � � �f�o�n�t�-�s�i�z�e�:� �1�.�5�r�e�m�;� � �}� � � � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �h�3� �{� � � � � � �f�o�n�t�-�s�i�z�e�:� �1�.�2�5�r�e�m�;� � �}� � � � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �u�l�,� � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �o�l� �{� � � � � � �m�a�r�g�i�n�-�b�o�t�t�o�m�:� �1�.�5�r�e�m�;� � � � � � �p�a�d�d�i�n�g�-�l�e�f�t�:� �1�.�5�r�e�m�;� � �}� � � � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �l�i� �{� � � � � � �m�a�r�g�i�n�-�b�o�t�t�o�m�:� �0�.�5�r�e�m�;� � �}� � � � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �s�t�r�o�n�g� �{� � � � � � �c�o�l�o�r�:� �v�a�r�(�-�-�p�r�i�m�a�r�y�-�c�o�l�o�r�)�;� � � � � � �f�o�n�t�-�w�e�i�g�h�t�:� �6�0�0�;� � �}� � � � �.�d�e�s�c�r�i�p�t�i�o�n�-�m�a�r�k�d�o�w�n� �p� �{� � � � � � �m�a�r�g�i�n�-�b�o�t�t�o�m�:� �1�r�e�m�;� � �}� � �.reviews-container{padding:2rem 0;margin-top:2rem;border-top:1px solid #e2e8f0}.reviews-title{font-size:1.5rem;color:var(--color-primary);margin-bottom:1.5rem}.reviews-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}.review-card{background:#fff;padding:1.5rem;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid 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p{color:var(--text-secondary);margin-bottom:var(--spacing-lg)}.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--spacing-lg)}.course-card{background:var(--bg-main);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-fast)}.course-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.course-badge{position:absolute;top:var(--spacing-sm);right:var(--spacing-sm)}.badge{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-size:.75rem;font-weight:600}.badge.completed{background:var(--color-success);color:var(--text-light)}.badge.in-progress{background:var(--color-accent);color:var(--text-light)}.course-content{padding:var(--spacing-lg)}.course-title{font-size:1.125rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.course-description{font-size:.875rem;color:var(--text-secondary);margin-bottom:var(--spacing-md);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.course-progress{margin-bottom:var(--spacing-md)}.progress-bar{height:6px;background:var(--bg-secondary);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--spacing-xs)}.progress-fill{height:100%;background:linear-gradient(90deg,var(--color-accent) 0%,var(--color-accent-light) 100%);border-radius:var(--radius-full);transition:width var(--transition-normal)}.progress-text{font-size:.75rem;color:var(--text-muted)}.course-btn{width:100%;justify-content:center}.error-message{background:#fef2f2;border:1px solid #fee2e2;color:var(--color-error);padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg)}@media(max-width:480px){.courses-grid{grid-template-columns:1fr}}.admin-page{max-width:1200px;margin:0 auto}.admin-card{background:var(--bg-main);border-radius:var(--radius-xl);padding:var(--spacing-xl);box-shadow:var(--shadow-sm)}.users-table{overflow-x:auto}.users-table table{width:100%;border-collapse:collapse}.users-table th{text-align:left;padding:var(--spacing-sm) var(--spacing-md);border-bottom:2px solid #e5e7eb;color:var(--text-muted);font-size:.85rem;font-weight:600;text-transform:uppercase}.users-table td{padding:var(--spacing-md);border-bottom:1px solid 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var(--transition-fast)}.category-item:hover{border-color:var(--color-primary);box-shadow:var(--shadow-sm)}.category-info h3{font-size:1rem;margin-bottom:var(--spacing-xs)}.category-slug{font-size:.8rem;color:var(--text-muted);font-family:monospace}.category-info p{font-size:.85rem;color:var(--text-secondary);margin-top:var(--spacing-sm)}.category-actions{display:flex;gap:var(--spacing-xs)}.config-list{display:flex;flex-direction:column;gap:var(--spacing-lg)}.config-item{padding:var(--spacing-lg);border:1px solid #e5e7eb;border-radius:var(--radius-md)}.config-header{display:flex;align-items:flex-start;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.config-icon{width:40px;height:40px;border-radius:var(--radius-md);background:#054a911a;color:var(--color-primary);display:flex;align-items:center;justify-content:center}.config-info h3{font-size:1rem;margin-bottom:var(--spacing-xs)}.config-info p{font-size:.85rem;color:var(--text-muted)}.config-input-wrapper{position:relative}.config-input-wrapper .input{width:100%;padding-right:40px}.toggle-visibility{position:absolute;right:var(--spacing-sm);top:50%;transform:translateY(-50%);color:var(--text-muted);padding:var(--spacing-xs)}.toggle-visibility:hover{color:var(--text-primary)}.config-note{margin-top:var(--spacing-lg);padding:var(--spacing-md);background:var(--bg-secondary);border-radius:var(--radius-md);font-size:.85rem;color:var(--text-secondary)}.admin-card .empty-state{text-align:center;padding:var(--spacing-2xl);color:var(--text-muted)}.admin-card .empty-state h3{margin-top:var(--spacing-md);color:var(--text-primary)}@media(max-width:768px){.categories-grid{grid-template-columns:1fr}}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl)}.admin-header h1{font-size:1.5rem;margin-bottom:var(--spacing-xs)}.admin-header p{color:var(--text-muted);font-size:.9rem}.admin-table-container{background:var(--bg-main);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-sm)}.admin-table{width:100%;border-collapse:collapse}.admin-table th{text-align:left;padding:var(--spacing-md);background:var(--bg-secondary);color:var(--text-muted);font-size:.85rem;font-weight:600;text-transform:uppercase}.admin-table td{padding:var(--spacing-md);border-bottom:1px solid #f0f0f0;vertical-align:middle}.admin-table tr:last-child td{border-bottom:none}.admin-table tr.expired{opacity:.6}.empty-message{text-align:center;color:var(--text-muted);padding:var(--spacing-2xl)!important}.coupon-code{font-family:monospace;font-weight:700;color:var(--color-primary);background:#054a911a;padding:.3rem .6rem;border-radius:var(--radius-sm)}.discount-badge{display:inline-flex;align-items:center;gap:.3rem;padding:.4rem .8rem;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem}.discount-badge.percentage{background:#6366f11a;color:#6366f1}.discount-badge.fixed{background:#10b9811a;color:#10b981}.date-range{display:flex;align-items:center;gap:.5rem;font-size:.85rem}.date-separator{color:var(--text-muted)}.actions-cell{display:flex;gap:.5rem}.btn-icon{width:36px;height:36px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:all var(--transition-fast)}.btn-icon.edit{background:#3b82f61a;color:#3b82f6}.btn-icon.edit:hover{background:#3b82f6;color:#fff}.btn-icon.delete{background:#ef44441a;color:#ef4444}.btn-icon.delete:hover{background:#ef4444;color:#fff}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-md)}.modal{background:#fff;border-radius:var(--radius-xl);max-width:500px;width:100%;max-height:90vh;overflow-y:auto;animation:modalSlide .3s ease}@keyframes modalSlide{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);border-bottom:1px solid #e5e7eb}.modal-header 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#e5e7eb}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;cursor:pointer;transition:all var(--transition-fast);border:none}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark);transform:translateY(-1px)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary)}.btn-secondary:hover{background:#e5e7eb}.btn-outline{background:transparent;border:2px solid var(--color-primary);color:var(--color-primary)}.btn-outline:hover{background:var(--color-primary);color:#fff}.btn-success{background:#10b981;color:#fff}.btn-success:hover{background:#059669}.btn-danger{background:#ef4444;color:#fff}.btn-danger:hover{background:#dc2626}.pending-count{display:flex;align-items:center;gap:.5rem;background:#fef3c7;color:#92400e;padding:.5rem 1rem;border-radius:var(--radius-md);font-weight:600}.empty-state-card{background:#fff;border-radius:var(--radius-xl);padding:4rem 2rem;text-align:center;box-shadow:var(--shadow-sm)}.empty-state-card .empty-icon{font-size:3rem;color:#10b981;margin-bottom:1rem}.empty-state-card h3{margin-bottom:.5rem;color:var(--text-primary)}.empty-state-card p{color:var(--text-muted)}.approval-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(400px,1fr));gap:var(--spacing-lg)}.approval-card{background:#fff;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow var(--transition-fast)}.approval-card:hover{box-shadow:var(--shadow-md)}.approval-card .card-header{display:flex;gap:1rem;padding:var(--spacing-lg);background:var(--bg-secondary)}.approval-card .course-thumb{width:80px;height:80px;border-radius:var(--radius-md);object-fit:cover}.approval-card .course-thumb.placeholder{background:linear-gradient(135deg,#054a91,#0a2463);display:flex;align-items:center;justify-content:center;font-size:2rem}.approval-card .card-info h3{font-size:1.1rem;margin-bottom:.5rem}.approval-card .meta-row{display:flex;gap:1rem;font-size:.85rem;color:var(--text-muted);margin-bottom:.3rem}.approval-card .meta-row span{display:flex;align-items:center;gap:.3rem}.approval-card .date{font-size:.8rem;color:var(--text-muted)}.approval-card .card-description{padding:var(--spacing-md) var(--spacing-lg)}.approval-card .card-description p{color:var(--text-secondary);font-size:.9rem;line-height:1.5}.approval-card .card-stats{display:flex;justify-content:space-around;padding:var(--spacing-md);background:var(--bg-secondary)}.approval-card .stat{text-align:center}.approval-card .stat-value{display:block;font-weight:700;color:var(--color-primary)}.approval-card .stat-label{font-size:.8rem;color:var(--text-muted)}.approval-card .card-actions{display:flex;gap:.5rem;padding:var(--spacing-md) var(--spacing-lg);justify-content:flex-end}.reject-info{margin-bottom:var(--spacing-md);color:var(--text-secondary)}.form-group textarea{width:100%;padding:.75rem 1rem;border:2px solid #e5e7eb;border-radius:var(--radius-md);font-size:1rem;resize:vertical;transition:border-color var(--transition-fast)}.form-group textarea:focus{outline:none;border-color:var(--color-primary)}.stat-card{background:#fff;border-radius:var(--radius-xl);padding:var(--spacing-lg);box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:var(--spacing-md)}.stat-card .stat-icon{width:50px;height:50px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem}.stat-card .stat-icon.blue{background:#3b82f61a;color:#3b82f6}.stat-card .stat-icon.green{background:#10b9811a;color:#10b981}.stat-card .stat-icon.purple{background:#8b5cf61a;color:#8b5cf6}.stat-card .stat-icon.orange{background:#f973161a;color:#f97316}.stat-card .stat-content{flex:1}.stat-card .stat-label{display:block;font-size:.85rem;color:var(--text-muted);margin-bottom:.3rem}.stat-card .stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--text-primary)}@media(max-width:768px){.approval-grid{grid-template-columns:1fr}.approval-card .card-actions{flex-direction:column}.form-row{grid-template-columns:1fr}}.alert-card{display:flex;gap:var(--spacing-md);padding:var(--spacing-lg);border-radius:var(--radius-xl);background:#fff;box-shadow:var(--shadow-sm)}.alert-card.warning{border-left:4px solid #f97316;background:#fff7ed}.alert-card .alert-icon{font-size:1.5rem;color:#f97316;flex-shrink:0}.alert-card .alert-content h4{color:#c2410c;margin-bottom:.5rem}.alert-card .alert-content ul{margin:.5rem 0;padding-left:1.2rem;color:var(--text-secondary)}.alert-card .alert-stats{display:flex;gap:1.5rem;margin-top:.5rem;font-size:.85rem;color:var(--text-muted)}.device-cell{display:flex;align-items:center;gap:.75rem}.device-icon{width:40px;height:40px;border-radius:var(--radius-md);background:var(--bg-secondary);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:1.2rem}.location-cell,.activity-cell{display:flex;align-items:center;gap:.5rem;color:var(--text-secondary)}.ip-cell{font-family:monospace;color:var(--text-muted)}.courses-page{max-width:1200px;margin:0 auto}.courses-filters{display:flex;flex-direction:column;gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.search-filter{position:relative;max-width:400px}.search-filter .search-icon{position:absolute;left:var(--spacing-md);top:50%;transform:translateY(-50%);color:var(--text-muted)}.search-filter .input{width:100%;padding:var(--spacing-sm) var(--spacing-md);padding-left:calc(var(--spacing-md) * 2 + 16px);border:1px solid #e5e7eb;border-radius:var(--radius-md);background:var(--bg-main)}.category-filters{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.filter-btn{padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-full);font-size:.875rem;font-weight:500;color:var(--text-secondary);background:var(--bg-main);border:1px solid #e5e7eb;transition:all var(--transition-fast)}.filter-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.filter-btn.active{background:var(--color-primary);border-color:var(--color-primary);color:var(--text-light)}.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.course-card{background:var(--bg-main);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-fast);display:flex;flex-direction:column}.course-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.course-thumbnail{position:relative;height:160px;background:linear-gradient(135deg,var(--color-primary-light) 0%,var(--color-primary) 100%)}.course-thumbnail img{width:100%;height:100%;object-fit:cover}.course-thumbnail-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.course-thumbnail-placeholder span{font-size:3rem;font-weight:700;color:#ffffff80}.level-badge{position:absolute;top:var(--spacing-sm);left:var(--spacing-sm);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-size:.7rem;font-weight:600;text-transform:uppercase}.level-badge.beginner{background:var(--color-success);color:var(--text-light)}.level-badge.intermediate{background:var(--color-warning);color:var(--text-light)}.level-badge.advanced{background:var(--color-error);color:var(--text-light)}.course-content{padding:var(--spacing-md);display:flex;flex-direction:column;flex:1}.course-title{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-xs);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.course-description{font-size:.875rem;color:var(--text-secondary);margin-bottom:var(--spacing-md);flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.course-meta{display:flex;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.meta-item{display:flex;align-items:center;gap:var(--spacing-xs);font-size:.8rem;color:var(--text-secondary)}.meta-item .icon{color:var(--color-accent)}.course-footer{display:flex;justify-content:space-between;align-items:center;padding-top:var(--spacing-sm);border-top:1px solid #f0f0f0}.course-price{font-size:1.125rem;font-weight:700;color:var(--color-primary)}.course-price .free{color:var(--color-success)}.btn-sm{padding:var(--spacing-xs) var(--spacing-sm);font-size:.8rem}.empty-state{text-align:center;padding:var(--spacing-2xl);background:var(--bg-main);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm)}.empty-icon{font-size:4rem;margin-bottom:var(--spacing-md)}.empty-state h2{font-size:1.25rem;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.empty-state p{color:var(--text-secondary)}@media(max-width:768px){.courses-filters{flex-direction:column}.search-filter{max-width:100%}.courses-grid{grid-template-columns:1fr}}.course-detail{padding-bottom:var(--spacing-2xl)}.course-detail .back-link{display:inline-flex;align-items:center;gap:var(--spacing-sm);color:var(--text-secondary);font-weight:500;margin-bottom:var(--spacing-lg);transition:color var(--transition-fast)}.course-detail .back-link:hover{color:var(--color-primary)}.course-detail-grid{display:grid;grid-template-columns:1fr 350px;gap:var(--spacing-xl);align-items:start}.course-info{display:flex;flex-direction:column;gap:var(--spacing-xl);min-width:0}.course-header-card{background:var(--bg-main);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.course-thumbnail-large{height:300px;background:linear-gradient(135deg,var(--color-primary-light) 0%,var(--color-primary) 100%);position:relative}.course-thumbnail-large img{width:100%;height:100%;object-fit:cover}.course-thumbnail-large .course-thumbnail-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.course-thumbnail-large .course-thumbnail-placeholder span{font-size:5rem;font-weight:700;color:#ffffff80}.course-header-content{padding:var(--spacing-lg)}.course-header-content h1{font-size:2rem;color:var(--text-primary);margin:var(--spacing-md) 0;line-height:1.2}.course-description-full{color:var(--text-secondary);line-height:1.7;margin-bottom:var(--spacing-lg);font-size:1rem}.course-description-full h1,.course-description-full h2,.course-description-full h3{color:var(--text-primary);margin-top:1.5em;margin-bottom:.5em;font-weight:600}.course-description-full h1{font-size:1.5rem;border-bottom:2px solid var(--bg-secondary);padding-bottom:.3em}.course-description-full h2{font-size:1.25rem}.course-description-full h3{font-size:1.1rem}.course-description-full p{margin-bottom:1em}.course-description-full ul,.course-description-full ol{margin-bottom:1em;padding-left:1.5em}.course-description-full li{margin-bottom:.3em}.course-description-full strong{color:var(--text-primary);font-weight:600}.course-description-full blockquote{border-left:4px solid var(--color-primary);padding-left:1em;color:var(--text-muted);font-style:italic;margin:1em 0}.course-description-full code{background:#f1f5f9;padding:2px 4px;border-radius:4px;font-family:monospace;font-size:.9em;color:#db2777}.course-description-full pre{background:#1e293b;color:#f8fafc;padding:1em;border-radius:8px;overflow-x:auto;margin-bottom:1em}.course-description-full pre code{color:inherit;background:transparent;padding:0}.course-description-full img{max-width:100%;border-radius:8px;margin:1em 0}.course-description-full a{color:var(--color-primary);text-decoration:underline}.course-stats{display:flex;gap:var(--spacing-lg);padding-top:var(--spacing-md);border-top:1px solid #f0f0f0}.course-stats .stat{display:flex;align-items:center;gap:var(--spacing-xs);color:var(--text-secondary);font-weight:500}.course-curriculum{background:var(--bg-main);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.course-curriculum h2{font-size:1.5rem;margin-bottom:var(--spacing-lg);color:var(--text-primary)}.module-item{border:1px solid #e5e7eb;border-radius:var(--radius-md);margin-bottom:var(--spacing-md);overflow:hidden}.module-header{width:100%;display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md);background:#f8fafc;border:none;border-bottom:1px solid transparent;cursor:pointer;transition:all var(--transition-fast)}.module-header:hover{background:#f1f5f9}.module-header.expanded{border-bottom-color:#e5e7eb;background:#fff}.module-info{display:flex;align-items:center;gap:var(--spacing-md);text-align:left}.module-number{background:var(--color-primary);color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;flex-shrink:0}.module-title{font-weight:600;color:var(--text-primary)}.module-meta{display:flex;align-items:center;gap:var(--spacing-md);color:var(--text-muted);font-size:.875rem}.lessons-list{background:#fff}.lesson-item{display:flex;align-items:center;padding:var(--spacing-md);gap:var(--spacing-md);border-bottom:1px solid #f0f0f0;transition:background var(--transition-fast)}.lesson-item:hover{background:#f8fafc}.lesson-item:last-child{border-bottom:none}.lesson-icon{color:var(--text-muted)}.lesson-title{flex:1;font-size:.9rem;color:var(--text-secondary)}.lesson-link{color:var(--color-primary);font-weight:500;font-size:.875rem}.lesson-link:hover{text-decoration:underline}.course-sidebar{position:sticky;top:var(--spacing-lg)}.purchase-card{background:var(--bg-main);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-md);border:1px solid #e5e7eb}.price-section{margin-bottom:var(--spacing-lg);text-align:center}.price-section .price{display:block;font-size:2rem;font-weight:800;color:var(--text-primary)}.price-section .price.original-strike{font-size:1rem;text-decoration:line-through;color:var(--text-muted);margin-bottom:.2rem;font-weight:400}.price-section .price.final{color:var(--color-success)}.enrolled-badge{background:#dcfce7;color:#166534;padding:var(--spacing-md);border-radius:var(--radius-md);text-align:center;font-weight:600;display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.course-includes{margin-top:var(--spacing-lg);list-style:none;border-top:1px solid #f0f0f0;padding-top:var(--spacing-lg)}.course-includes li{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);color:var(--text-secondary);font-size:.9rem}.course-includes li svg{color:var(--color-success)}.auth-coupon-section{background:#f8fafc;padding:12px;border-radius:8px;border:1px dashed #cbd5e1;margin-bottom:16px}.auth-coupon-section .coupon-input-group{display:flex;gap:8px}.auth-coupon-section input{width:100%;border:1px solid #e2e8f0;font-size:.9em}.auth-coupon-section input:focus{border-color:var(--color-primary);outline:none}.btn-coupon{display:flex;align-items:center;justify-content:center;transition:all .2s}.btn-coupon:hover:not(:disabled){background:#e2e8f0!important;border-color:#94a3b8!important}@media(max-width:900px){.course-detail-grid{grid-template-columns:1fr}.course-sidebar{position:static;order:-1}.course-thumbnail-large{height:200px}}.review-form-container{padding:1rem}.review-form-container h3{margin-bottom:1.5rem;color:var(--color-primary);text-align:center}.rating-input{margin-bottom:1.5rem;text-align:center}.rating-input label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-secondary)}.stars-input{display:flex;justify-content:center;gap:.5rem}.star-btn{background:none;border:none;padding:0;cursor:pointer;transition:transform .2s}.star-btn:hover{transform:scale(1.1)}.comment-input{margin-bottom:2rem}.comment-input label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-secondary)}.comment-input textarea{width:100%;resize:vertical}.form-actions{display:flex;justify-content:flex-end;gap:1rem}.ai-chat-widget{position:fixed;bottom:var(--spacing-xl);right:var(--spacing-xl);width:380px;height:500px;background:var(--bg-main);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);display:flex;flex-direction:column;z-index:1000;animation:slideInUp var(--transition-normal)}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) var(--spacing-lg);background:var(--color-primary);color:var(--text-light);border-radius:var(--radius-xl) var(--radius-xl) 0 0}.chat-title{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:600}.close-btn{color:var(--text-light);opacity:.8;padding:var(--spacing-xs);transition:opacity var(--transition-fast)}.close-btn:hover{opacity:1}.chat-messages{flex:1;overflow-y:auto;padding:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-sm)}.message{display:flex;max-width:85%}.message.user{align-self:flex-end}.message.assistant{align-self:flex-start}.message-content{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-lg);font-size:.9rem;line-height:1.5}.message.user .message-content{background:var(--color-primary);color:var(--text-light);border-bottom-right-radius:var(--radius-sm)}.message.assistant .message-content{background:var(--bg-secondary);color:var(--text-primary);border-bottom-left-radius:var(--radius-sm)}.message-content.loading{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--text-muted)}.loading-icon{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.chat-input{display:flex;gap:var(--spacing-sm);padding:var(--spacing-md);border-top:1px solid #e5e7eb}.chat-input input{flex:1;padding:var(--spacing-sm) var(--spacing-md);border:1px solid #e5e7eb;border-radius:var(--radius-full);font-size:.9rem;transition:border-color var(--transition-fast)}.chat-input input:focus{outline:none;border-color:var(--color-primary)}.chat-input button{width:40px;height:40px;border-radius:var(--radius-full);background:var(--color-accent);color:var(--text-light);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.chat-input button:hover:not(:disabled){background:var(--color-accent-dark);transform:scale(1.05)}.chat-input button:disabled{opacity:.5;cursor:not-allowed}@media(max-width:480px){.ai-chat-widget{bottom:0;right:0;left:0;width:100%;height:100%;border-radius:0}.chat-header{border-radius:0}}.comment-item{margin-bottom:1.5rem}.comment-main{display:flex;gap:1rem}.comment-avatar{width:36px;height:36px;border-radius:50%;background:var(--color-primary-light);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;flex-shrink:0}.comment-body{flex:1}.comment-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.25rem}.comment-author{font-weight:600;color:var(--color-secondary);font-size:.9rem}.comment-date{font-size:.75rem;color:#94a3b8}.comment-text{color:var(--text-primary);line-height:1.5;font-size:.95rem;margin:.25rem 0 .5rem}.comment-actions{display:flex;gap:1rem}.action-link{background:none;border:none;padding:0;font-size:.8rem;color:var(--color-primary);cursor:pointer;font-weight:500}.action-link:hover{text-decoration:underline}.action-link.delete{color:#ef4444;display:flex;align-items:center;gap:4px}.reply-form-wrapper{margin-left:3rem;margin-top:.5rem}.replies-list{margin-left:3rem;margin-top:1rem;padding-left:1rem;border-left:2px solid #f1f5f9}.transcript-view{background-color:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:20px;margin-top:20px}.transcript-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;padding-bottom:10px;border-bottom:1px solid #eee}.transcript-header h3{margin:0;font-size:1.1rem;color:#333;display:flex;align-items:center;gap:8px}.transcript-content{max-height:400px;overflow-y:auto;line-height:1.6;color:#444;font-size:.95rem;white-space:pre-wrap;padding-right:10px}.transcript-content::-webkit-scrollbar{width:6px}.transcript-content::-webkit-scrollbar-thumb{background-color:#ccc;border-radius:4px}.transcript-loading,.transcript-error,.transcript-empty{padding:20px;text-align:center;color:#666;background:#f9f9f9;border-radius:8px}.transcript-error{color:#d32f2f;background:#fdecea}.lesson-player-page{min-height:calc(100vh - var(--header-height));display:flex;flex-direction:column;margin:calc(-1 * var(--spacing-xl));margin-top:calc(-1 * var(--spacing-xl))}.player-header{display:flex;align-items:center;gap:var(--spacing-lg);padding:var(--spacing-md) var(--spacing-xl);background:var(--bg-main);border-bottom:1px solid #e5e7eb}.player-header .back-link{display:flex;align-items:center;gap:var(--spacing-xs);color:var(--text-secondary);font-size:.9rem;white-space:nowrap}.player-header .back-link:hover{color:var(--color-primary)}.lesson-title-bar{flex:1;min-width:0}.lesson-title-bar h1{font-size:1rem;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-title-bar .course-name{font-size:.8rem;color:var(--text-muted)}.player-controls{display:flex;gap:var(--spacing-sm)}.control-btn{width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);background:var(--bg-secondary);transition:all var(--transition-fast)}.control-btn:hover{color:var(--color-primary);background:#054a911a}.control-btn.active{color:var(--color-primary);background:#054a9126}.chat-btn.active{color:var(--color-accent);background:#f0841f26}.player-layout{display:flex;flex:1}.player-main{flex:1;display:flex;flex-direction:column;background:var(--bg-main)}.video-container{background:#000;aspect-ratio:16/9;max-height:70vh}.lesson-video{width:100%;height:100%}.text-content{padding:var(--spacing-xl);max-width:800px;margin:0 auto;line-height:1.8}.text-content h1,.text-content h2,.text-content h3{margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm)}.text-content p{margin-bottom:var(--spacing-md)}.text-content ul,.text-content ol{margin-left:var(--spacing-lg);margin-bottom:var(--spacing-md)}.no-content-player{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);color:var(--text-muted);text-align:center;min-height:400px}.no-content-player svg{margin-bottom:var(--spacing-md)}.no-content-player h3{margin-bottom:var(--spacing-xs);color:var(--text-secondary)}.lesson-actions{padding:var(--spacing-lg) var(--spacing-xl);border-top:1px solid #e5e7eb}.nav-buttons{display:flex;justify-content:space-between;gap:var(--spacing-md)}.lesson-description{padding:var(--spacing-lg) var(--spacing-xl);border-top:1px solid #e5e7eb}.lesson-description h3{font-size:1rem;margin-bottom:var(--spacing-sm)}.lesson-description p{color:var(--text-secondary);line-height:1.7}.player-sidebar{width:300px;background:var(--bg-secondary);border-left:1px solid #e5e7eb;overflow-y:auto}.player-sidebar h3{padding:var(--spacing-md);font-size:.9rem;font-weight:600;border-bottom:1px solid #e5e7eb}.lessons-nav{padding:var(--spacing-sm)}.lesson-nav-item{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);transition:background var(--transition-fast)}.lesson-nav-item:hover{background:var(--bg-main)}.lesson-nav-item.active{background:var(--color-primary);color:var(--text-light)}.lesson-num{width:24px;height:24px;border-radius:var(--radius-full);background:#0000001a;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600}.lesson-nav-item.active .lesson-num{background:#fff3}.lesson-nav-title{flex:1;font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}@media(max-width:768px){.player-header{flex-wrap:wrap}.lesson-title-bar{order:3;width:100%;margin-top:var(--spacing-sm)}.player-sidebar{display:none}.nav-buttons{flex-direction:column}.nav-buttons .btn{width:100%;justify-content:center}}.secure-video-container{width:100%;height:100%;background:#000;display:flex;align-items:center;justify-content:center}.secure-video{width:100%;height:100%;object-fit:contain}.secure-player-loading{width:100%;height:100%;background:#0f172a;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-light);gap:var(--spacing-md)}.secure-player-loading .spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,.1);border-radius:50%;border-top-color:var(--color-primary);animation:spin 1s linear infinite}.secure-player-error{width:100%;height:100%;background:#0f172a;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#ef4444;gap:var(--spacing-md);text-align:center;padding:var(--spacing-xl)}.btn-retry{background:transparent;border:1px solid rgba(255,255,255,.2);color:#fff;padding:.5rem 1rem;border-radius:var(--radius-md);display:flex;align-items:center;gap:.5rem;cursor:pointer;transition:all .2s}.btn-retry:hover{background:#ffffff1a;border-color:#fff}.instructor-studio{max-width:1200px;margin:0 auto}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.stat-card{background:var(--bg-main);border-radius:var(--radius-lg);padding:var(--spacing-lg);display:flex;align-items:center;gap:var(--spacing-md);box-shadow:var(--shadow-sm)}.stat-icon{width:56px;height:56px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:1.5rem}.stat-icon.students{background:#3b82f61a;color:#3b82f6}.stat-icon.earnings{background:#10b9811a;color:#10b981}.stat-icon.rating{background:#f59e0b1a;color:#f59e0b}.stat-icon.courses{background:#8b5cf61a;color:#8b5cf6}.stat-info{display:flex;flex-direction:column}.stat-value{font-size:1.5rem;font-weight:700;color:var(--text-primary)}.stat-label{font-size:.85rem;color:var(--text-muted)}.courses-section{background:var(--bg-main);border-radius:var(--radius-xl);padding:var(--spacing-xl);box-shadow:var(--shadow-sm)}.courses-section h2{margin-bottom:var(--spacing-lg)}.courses-table{overflow-x:auto}.courses-table table{width:100%;border-collapse:collapse}.courses-table th{text-align:left;padding:var(--spacing-sm) var(--spacing-md);border-bottom:2px solid #e5e7eb;color:var(--text-muted);font-size:.85rem;font-weight:600;text-transform:uppercase}.courses-table td{padding:var(--spacing-md);border-bottom:1px solid #f0f0f0}.course-cell{display:flex;align-items:center;gap:var(--spacing-sm)}.course-cell .course-title{font-weight:500}.status-badge{padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-size:.75rem;font-weight:600}.status-badge.published{background:#10b9811a;color:#10b981}.status-badge.draft{background:#6b72801a;color:#6b7280}.free-tag{color:var(--color-success);font-weight:600}.action-btns{display:flex;gap:var(--spacing-xs)}.action-btn{width:32px;height:32px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.action-btn.edit{color:var(--color-primary);background:#054a911a}.action-btn.edit:hover{background:#054a9133}.action-btn.delete{color:var(--color-error);background:#ef44441a}.action-btn.delete:hover{background:#ef444433}.courses-section .empty-state{text-align:center;padding:var(--spacing-2xl);color:var(--text-muted)}.courses-section .empty-state h3{margin-top:var(--spacing-md);color:var(--text-primary)}.courses-section .empty-state p{margin-bottom:var(--spacing-lg)}.modal-content.large{max-width:600px}.course-form{display:flex;flex-direction:column;gap:var(--spacing-md)}.ai-section{background:linear-gradient(135deg,#054a910d,#f0841f0d);border:1px dashed var(--color-primary);border-radius:var(--radius-md);padding:var(--spacing-md)}.ai-section label{display:flex;align-items:center;gap:var(--spacing-xs);font-weight:600;color:var(--color-primary);margin-bottom:var(--spacing-sm)}.ai-input-group{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.ai-input-group input{flex:1;min-width:200px}.textarea{resize:vertical;min-height:100px}@media(max-width:768px){.page-header{flex-direction:column;align-items:flex-start;gap:var(--spacing-md)}.stats-grid{grid-template-columns:repeat(2,1fr)}.form-row{grid-template-columns:1fr}.ai-input-group{flex-direction:column}}@media(max-width:480px){.stats-grid{grid-template-columns:1fr}}.instructor-dashboard{max-width:1200px;margin:0 auto}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl)}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl)}.stat-card.blue .stat-icon{background:#3b82f61a;color:#3b82f6}.stat-card.green .stat-icon{background:#10b9811a;color:#10b981}.stat-card.purple .stat-icon{background:#8b5cf61a;color:#8b5cf6}.stat-card.orange .stat-icon{background:#f973161a;color:#f97316}.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:var(--spacing-xl)}.dashboard-card{background:var(--bg-main);border-radius:var(--radius-xl);padding:var(--spacing-lg);box-shadow:var(--shadow-sm);height:100%}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg)}.card-header h3{font-size:1.1rem;margin:0}.btn-link{background:none;border:none;color:var(--color-primary);cursor:pointer;font-weight:500}.courses-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.course-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm);border-radius:var(--radius-lg);transition:background-color var(--transition-fast)}.course-item:hover{background-color:var(--bg-secondary)}.course-item .course-thumb{width:60px;height:40px;border-radius:var(--radius-md);background:#e2e8f0;overflow:hidden;display:flex;align-items:center;justify-content:center}.course-item .course-thumb img{width:100%;height:100%;object-fit:cover}.course-info{flex:1}.course-info h4{font-size:.95rem;margin:0 0 .2rem}.course-meta{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.8rem}.course-meta .price{font-weight:600;color:var(--text-primary)}.badge{padding:2px 6px;border-radius:4px;font-size:.7rem;font-weight:600;text-transform:uppercase}.badge.success{background:#d1fae5;color:#065f46}.badge.warning{background:#fef3c7;color:#92400e}.badge.danger{background:#fee2e2;color:#991b1b}.badge.secondary{background:#f3f4f6;color:#374151}.sales-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.sale-item{display:flex;justify-content:space-between;align-items:center;padding-bottom:var(--spacing-sm);border-bottom:1px solid #f1f5f9}.sale-item:last-child{border-bottom:none}.sale-info h4{font-size:.9rem;margin:0 0 .2rem}.sale-date{font-size:.75rem;color:var(--text-muted)}.sale-amount{font-weight:700;color:#10b981}@media(max-width:900px){.dashboard-grid{grid-template-columns:1fr}}.transcript-editor{margin-top:20px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;padding:16px}.transcript-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.transcript-header .section-label{display:flex;align-items:center;gap:8px;font-weight:600;color:#334155;margin:0}.transcript-area{width:100%;margin-bottom:12px;resize:vertical;font-family:monospace;font-size:.9em}.transcript-actions{display:flex;justify-content:flex-end}.badge-success{background-color:#dcfce7;color:#166534;font-size:.75rem;padding:2px 8px;border-radius:99px;display:flex;align-items:center;gap:4px;font-weight:600}.transcript-loading{padding:20px;text-align:center;color:#64748b;font-style:italic}.quiz-modal{max-width:800px;height:90vh;overflow-y:auto;display:flex;flex-direction:column}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.questions-container{margin-top:20px;display:flex;flex-direction:column;gap:20px;padding-bottom:20px;border-top:1px solid #e2e8f0;padding-top:20px}.question-card{background:#f8fafc;border:1px solid #e2e8f0;padding:16px;border-radius:8px}.question-header{display:flex;justify-content:space-between;font-weight:600;margin-bottom:8px;color:#475569}.question-input{font-weight:500;margin-bottom:12px}.option-row{display:flex;align-items:center;gap:12px;margin-bottom:8px}.radio-circle{width:24px;height:24px;border-radius:50%;border:2px solid #cbd5e1;display:flex;align-items:center;justify-content:center;cursor:pointer;background:#fff;color:#fff;font-size:14px}.radio-circle.active{background:#22c55e;border-color:#22c55e}.option-input{flex:1;font-size:.9rem;padding:8px}.icon-btn.sm{padding:4px}.btn-text-primary.sm{margin-left:36px;margin-top:4px}.full-width{width:100%}.course-editor{max-width:1000px;margin:0 auto}.editor-header{display:flex;align-items:center;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl);flex-wrap:wrap}.editor-title{flex:1;display:flex;align-items:center;gap:var(--spacing-md)}.editor-title h1{font-size:1.5rem}.editor-actions{display:flex;gap:var(--spacing-sm)}.editor-content{background:var(--bg-main);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm)}.section-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);border-bottom:1px solid #e5e7eb}.section-header h2{font-size:1.125rem}.modules-list{padding:var(--spacing-md)}.module-card{border:1px solid #e5e7eb;border-radius:var(--radius-md);margin-bottom:var(--spacing-md);overflow:hidden}.module-card .module-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md);background:var(--bg-secondary);cursor:pointer;transition:background var(--transition-fast)}.module-card .module-header:hover{background:#edf2f7}.module-info{display:flex;align-items:center;gap:var(--spacing-md)}.module-order{width:28px;height:28px;border-radius:var(--radius-sm);background:var(--color-primary);color:var(--text-light);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:600}.module-title{font-weight:600}.lesson-count{font-size:.8rem;color:var(--text-muted)}.module-actions{display:flex;align-items:center;gap:var(--spacing-xs)}.icon-btn{width:32px;height:32px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all var(--transition-fast)}.icon-btn:hover{background:#0000000d;color:var(--text-primary)}.icon-btn.danger:hover{background:#ef44441a;color:var(--color-error)}.lessons-section{padding:var(--spacing-sm);background:var(--bg-main)}.lesson-row{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-sm);transition:background var(--transition-fast)}.lesson-row:hover{background:var(--bg-secondary)}.lesson-info{display:flex;align-items:center;gap:var(--spacing-sm)}.lesson-order{width:20px;height:20px;border-radius:var(--radius-full);background:var(--bg-secondary);display:flex;align-items:center;justify-content:center;font-size:.7rem;color:var(--text-muted)}.lesson-icon{color:var(--color-accent)}.lesson-row .lesson-title{font-size:.9rem}.lesson-actions{display:flex;gap:var(--spacing-xs);opacity:0;transition:opacity var(--transition-fast)}.lesson-row:hover .lesson-actions{opacity:1}.add-lesson-btn{display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs);width:100%;padding:var(--spacing-sm);margin-top:var(--spacing-sm);border:1px dashed #e5e7eb;border-radius:var(--radius-sm);color:var(--text-muted);font-size:.85rem;transition:all var(--transition-fast)}.add-lesson-btn:hover{border-color:var(--color-primary);color:var(--color-primary);background:#054a9108}.modules-section .empty-state{padding:var(--spacing-2xl);text-align:center;color:var(--text-muted)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md)}@media(max-width:768px){.editor-header{flex-direction:column;align-items:flex-start}.editor-title{order:1;width:100%;flex-direction:column;align-items:flex-start;gap:var(--spacing-xs)}.editor-actions{order:3;width:100%}.editor-actions .btn{flex:1}.form-row{grid-template-columns:1fr}.lesson-actions{opacity:1}}.content-management-section{margin:var(--spacing-lg) 0;padding:var(--spacing-md);background:var(--bg-secondary);border-radius:var(--radius-md);border:1px solid #e5e7eb}.video-upload-section,.text-content-section{display:flex;flex-direction:column;gap:var(--spacing-xs)}.file-input-wrapper{margin-top:var(--spacing-xs)}.file-input{padding:var(--spacing-sm);background:#fff;border:1px dashed var(--color-primary);cursor:pointer}.upload-progress{margin-top:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-xs)}.progress-bar-container{height:8px;background:#e2e8f0;border-radius:var(--radius-full);overflow:hidden;width:100%}.progress-bar-fill{height:100%;background:var(--color-primary);border-radius:var(--radius-full);transition:width .3s ease}.progress-text{font-size:.8rem;color:var(--text-muted);text-align:right}.current-file-info{display:flex;align-items:center;gap:var(--spacing-xs);margin-top:var(--spacing-sm);color:var(--color-success);font-size:.9rem;font-weight:500}.content-editor{font-family:Courier New,Courier,monospace;font-size:.9rem;line-height:1.5}.quiz-page{max-width:800px;margin:0 auto;min-height:calc(100vh - var(--header-height) - var(--spacing-xl) * 2)}.quiz-header{display:flex;align-items:center;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.quiz-header h1{flex:1;font-size:1.25rem}.quiz-progress{font-weight:600;color:var(--color-primary);background:#054a911a;padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-full)}.quiz-container{background:var(--bg-main);border-radius:var(--radius-xl);padding:var(--spacing-xl);box-shadow:var(--shadow-md)}.question-card{margin-bottom:var(--spacing-xl)}.question-number{font-size:.85rem;color:var(--color-accent);font-weight:600;text-transform:uppercase;margin-bottom:var(--spacing-sm)}.question-text{font-size:1.25rem;line-height:1.5;color:var(--text-primary);margin-bottom:var(--spacing-xl)}.options-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.option-btn{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);border:2px solid #e5e7eb;border-radius:var(--radius-md);text-align:left;transition:all var(--transition-fast);background:var(--bg-main)}.option-btn:hover{border-color:var(--color-primary);background:#054a9108}.option-btn.selected{border-color:var(--color-primary);background:#054a911a}.option-letter{width:32px;height:32px;border-radius:var(--radius-full);background:var(--bg-secondary);display:flex;align-items:center;justify-content:center;font-weight:600;color:var(--text-secondary);flex-shrink:0}.option-btn.selected .option-letter{background:var(--color-primary);color:var(--text-light)}.option-text{flex:1;color:var(--text-primary)}.check-icon{color:var(--color-primary);font-size:1.25rem}.quiz-navigation{display:flex;justify-content:space-between;padding-top:var(--spacing-lg);border-top:1px solid #e5e7eb}.questions-indicators{display:flex;flex-wrap:wrap;gap:var(--spacing-xs);justify-content:center;margin-top:var(--spacing-xl)}.indicator{width:36px;height:36px;border-radius:var(--radius-sm);border:1px solid #e5e7eb;font-size:.85rem;font-weight:500;color:var(--text-secondary);transition:all var(--transition-fast)}.indicator:hover{border-color:var(--color-primary)}.indicator.current{background:var(--color-primary);border-color:var(--color-primary);color:var(--text-light)}.indicator.answered{background:#10b9811a;border-color:var(--color-success);color:var(--color-success)}.indicator.current.answered{background:var(--color-primary);color:var(--text-light)}.quiz-result{text-align:center;padding:var(--spacing-2xl);background:var(--bg-main);border-radius:var(--radius-xl);box-shadow:var(--shadow-md)}.result-icon{width:80px;height:80px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:2.5rem;margin:0 auto var(--spacing-lg)}.result-icon.passed{background:#10b9811a;color:var(--color-success)}.result-icon.failed{background:#ef44441a;color:var(--color-error)}.quiz-result h1{font-size:1.75rem;margin-bottom:var(--spacing-md)}.result-score{font-size:1.5rem;margin-bottom:var(--spacing-sm)}.result-score strong{color:var(--color-primary)}.result-message{color:var(--text-secondary);margin-bottom:var(--spacing-xl)}.result-actions{display:flex;gap:var(--spacing-md);justify-content:center}.no-questions{text-align:center;padding:var(--spacing-2xl);color:var(--text-secondary)}@media(max-width:480px){.quiz-header{flex-wrap:wrap}.quiz-header h1{order:3;width:100%;margin-top:var(--spacing-sm)}.quiz-navigation{flex-direction:column;gap:var(--spacing-sm)}.quiz-navigation .btn{width:100%;justify-content:center}.result-actions{flex-direction:column}}