*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%;min-height:100vh}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.cache-management{padding:20px;max-width:1400px;margin:0 auto}.page-header{margin-bottom:30px}.page-header h1{margin:0 0 10px;font-size:28px;color:#333}.page-header p{margin:0;color:#666;font-size:14px}.tabs{display:flex;gap:10px;margin-bottom:20px;border-bottom:2px solid #e0e0e0}.tabs button{padding:12px 24px;border:none;background:none;cursor:pointer;font-size:15px;color:#666;border-bottom:3px solid transparent;transition:all .3s;margin-bottom:-2px}.tabs button:hover{color:#333;background:#f5f5f5}.tabs button.active{color:#007bff;border-bottom-color:#007bff;font-weight:600}.tab-content{background:white;border-radius:8px;padding:20px;box-shadow:0 2px 8px #0000001a}.search-bar{display:flex;gap:10px;margin-bottom:20px}.search-bar input{flex:1;padding:10px 15px;border:1px solid #ddd;border-radius:4px;font-size:14px}.search-bar input:focus{outline:none;border-color:#007bff}.search-bar button{padding:10px 20px;border:none;border-radius:4px;background:#007bff;color:#fff;cursor:pointer;font-size:14px;transition:background .3s}.search-bar button:hover{background:#0056b3}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:15px;background:#f8f9fa;border-radius:4px}.toolbar-left,.toolbar-right{display:flex;gap:10px;align-items:center}.toolbar button{padding:8px 16px;border:none;border-radius:4px;background:#007bff;color:#fff;cursor:pointer;font-size:14px;transition:background .3s}.toolbar button:hover{background:#0056b3}.toolbar button:disabled{background:#ccc;cursor:not-allowed}.toolbar button.danger{background:#dc3545}.toolbar button.danger:hover{background:#c82333}.toolbar select{padding:8px 12px;border:1px solid #ddd;border-radius:4px;font-size:14px;cursor:pointer}.table-container{overflow-x:auto;margin-bottom:20px}.cache-table{width:100%;border-collapse:collapse;font-size:14px}.cache-table thead{background:#f8f9fa}.cache-table th{padding:12px;text-align:left;font-weight:600;color:#333;border-bottom:2px solid #dee2e6}.cache-table td{padding:12px;border-bottom:1px solid #dee2e6;vertical-align:middle}.cache-table tbody tr:hover{background:#f8f9fa}.text-cell{color:#333;line-height:1.5}.text-meta{font-size:12px;color:#999;margin-top:4px}.btn-small{padding:4px 12px;border:none;border-radius:3px;background:#007bff;color:#fff;cursor:pointer;font-size:12px;transition:background .3s}.btn-small:hover{background:#0056b3}.btn-small.danger{background:#dc3545}.btn-small.danger:hover{background:#c82333}.pagination{display:flex;justify-content:center;align-items:center;gap:10px;padding:20px 0}.pagination button{padding:8px 16px;border:1px solid #ddd;border-radius:4px;background:white;color:#333;cursor:pointer;font-size:14px;transition:all .3s}.pagination button:hover:not(:disabled){background:#007bff;color:#fff;border-color:#007bff}.pagination button:disabled{background:#f5f5f5;color:#ccc;cursor:not-allowed}.page-info{padding:0 10px;color:#666;font-size:14px}.stats-section{margin-bottom:30px}.stats-section h2{margin:0 0 20px;font-size:20px;color:#333}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-bottom:30px}.stat-card{display:flex;align-items:center;gap:15px;padding:20px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:8px;color:#fff;box-shadow:0 4px 6px #0000001a}.stat-card:nth-child(2){background:linear-gradient(135deg,#f093fb 0%,#f5576c 100%)}.stat-card:nth-child(3){background:linear-gradient(135deg,#4facfe 0%,#00f2fe 100%)}.stat-card:nth-child(4){background:linear-gradient(135deg,#43e97b 0%,#38f9d7 100%)}.stat-icon{font-size:40px;opacity:.9}.stat-content{flex:1}.stat-label{font-size:14px;opacity:.9;margin-bottom:5px}.stat-value{font-size:28px;font-weight:700}.provider-stats{overflow-x:auto}.stats-table{width:100%;border-collapse:collapse;font-size:14px}.stats-table thead{background:#f8f9fa}.stats-table th{padding:12px;text-align:left;font-weight:600;color:#333;border-bottom:2px solid #dee2e6}.stats-table td{padding:12px;border-bottom:1px solid #dee2e6}.stats-table tbody tr:hover{background:#f8f9fa}.stats-actions{display:flex;gap:10px;margin-top:20px}.stats-actions button{padding:10px 20px;border:none;border-radius:4px;background:#007bff;color:#fff;cursor:pointer;font-size:14px;transition:background .3s}.stats-actions button:hover{background:#0056b3}.cleanup-section{margin-bottom:40px}.cleanup-section h2{margin:0 0 20px;font-size:20px;color:#333}.cleanup-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}.action-card{display:flex;gap:15px;padding:20px;background:white;border:2px solid #e0e0e0;border-radius:8px;transition:all .3s}.action-card:hover{border-color:#007bff;box-shadow:0 4px 12px #007bff26}.action-card.danger-card{border-color:#ffcdd2;background:#fff5f5}.action-card.danger-card:hover{border-color:#dc3545;box-shadow:0 4px 12px #dc354526}.action-icon{font-size:40px;opacity:.8}.action-content{flex:1}.action-content h3{margin:0 0 8px;font-size:16px;color:#333}.action-content p{margin:0 0 15px;font-size:13px;color:#666;line-height:1.5}.action-content button{padding:8px 20px;border:none;border-radius:4px;background:#007bff;color:#fff;cursor:pointer;font-size:14px;transition:background .3s}.action-content button:hover{background:#0056b3}.action-content button.danger{background:#dc3545}.action-content button.danger:hover{background:#c82333}@media (max-width: 768px){.cache-management{padding:10px}.tabs{overflow-x:auto}.tabs button{padding:10px 16px;font-size:14px;white-space:nowrap}.toolbar{flex-direction:column;gap:10px}.toolbar-left,.toolbar-right{width:100%;flex-wrap:wrap}.stats-grid,.cleanup-actions{grid-template-columns:1fr}.cache-table{font-size:12px}.cache-table th,.cache-table td{padding:8px}}.app-footer{width:100%;padding:20px 16px;text-align:center;background:var(--card);border-top:1px solid var(--border);margin-top:24px}.app-footer p{font-size:.875rem;color:var(--text-light);line-height:1.6}@media (max-width: 480px){.app-footer{padding:16px 12px}.app-footer p{font-size:.75rem}}:root{--primary: #6366f1;--primary-dark: #4f46e5;--secondary: #f97316;--bg: #f1f5f9;--card: #ffffff;--sidebar: #1e293b;--text: #1e293b;--text-light: #64748b;--border: #e2e8f0;--success: #22c55e;--error: #ef4444;--warning: #f59e0b;--shadow: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}@media (max-width: 480px){html{font-size:14px}}@media (min-width: 768px) and (max-width: 1024px){html{font-size:18px}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.login-page{min-height:100vh;min-height:100dvh;width:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e293b 0%,#334155 100%);padding:16px}.login-card{background:var(--card);border-radius:16px;padding:32px 24px;width:100%;max-width:400px;box-shadow:var(--shadow-lg)}@media (max-width: 480px){.login-page{padding:0;align-items:stretch}.login-card{max-width:100%;min-height:100vh;min-height:100dvh;border-radius:0;display:flex;flex-direction:column;justify-content:center;padding:32px 24px}}.login-header{text-align:center;margin-bottom:32px}.login-header h1{font-size:1.75rem;color:var(--text);margin-bottom:8px}.login-header p{color:var(--text-light)}.login-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-weight:500;font-size:.875rem;color:var(--text)}.form-group input,.form-group select,.form-group textarea{padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:.9375rem;transition:all .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.form-group textarea{resize:vertical;font-family:monospace}.btn-primary{padding:12px 24px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px #6366f166}.btn-primary:disabled{opacity:.7;cursor:not-allowed;transform:none}.btn-secondary{padding:12px 24px;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s}.btn-secondary:hover{background:#e2e8f0}.error-message{background:#fef2f2;color:var(--error);padding:12px;border-radius:8px;font-size:.875rem;margin-bottom:16px}.success-message{background:#f0fdf4;color:var(--success);padding:12px;border-radius:8px;font-size:.875rem;margin-bottom:16px}.admin-layout{display:flex;min-height:100vh}.admin-sidebar{width:240px;background:var(--sidebar);color:#fff;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform .3s ease}@media (max-width: 768px){.admin-sidebar{transform:translate(-100%)}.admin-sidebar.open{transform:translate(0)}}.admin-logo{padding:20px;border-bottom:1px solid rgba(255,255,255,.1)}.admin-logo h1{font-size:1.25rem;font-weight:600}.admin-nav{flex:1;padding:16px 0}.admin-nav a{display:block;padding:12px 20px;color:#ffffffb3;text-decoration:none;font-weight:500;transition:all .2s}.admin-nav a:hover{color:#fff;background:rgba(255,255,255,.1)}.admin-nav a.active{color:#fff;background:var(--primary)}.admin-sidebar .logout-btn{margin:16px;padding:10px;background:rgba(255,255,255,.1);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:.875rem;transition:all .2s}.admin-sidebar .logout-btn:hover{background:rgba(255,255,255,.2)}.admin-main{flex:1;margin-left:240px;padding:24px;background:var(--bg);min-height:100vh;min-height:100dvh;overflow-x:hidden}@media (max-width: 768px){.admin-main{margin-left:0;padding:16px}}.page{max-width:1200px;margin:0 auto}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.page-header h1{font-size:1.5rem;font-weight:600}.user-count{color:var(--text-light);font-size:.875rem}.page-loading{display:flex;align-items:center;justify-content:center;min-height:300px;color:var(--text-light)}.card{background:var(--card);border-radius:12px;padding:20px;box-shadow:var(--shadow);margin-bottom:20px}.card h3{font-size:1rem;font-weight:600;margin-bottom:16px;color:var(--text)}.card-header-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.card-header-row h3{margin-bottom:0}.card-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.lesson-card{background:var(--card);border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:all .2s}.lesson-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.lesson-card-image{height:140px;background:var(--bg)}.lesson-card-image img{width:100%;height:100%;object-fit:cover}.lesson-card-content{padding:16px}.lesson-card-header{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}.lesson-id-badge{background:var(--primary);color:#fff;padding:4px 10px;border-radius:6px;font-size:.75rem;font-weight:600;font-family:monospace}.lesson-card-title h3{font-size:1rem;margin:0}.lesson-card-title p{font-size:.875rem;color:var(--text-light);margin:4px 0 0}.lesson-card-stats{display:flex;gap:16px;font-size:.8125rem;color:var(--text-light);margin-bottom:12px}.lesson-card-actions{display:flex;gap:8px}.btn-edit{flex:1;padding:8px;background:#eff6ff;color:#3b82f6;border:none;border-radius:6px;font-size:.8125rem;font-weight:500;cursor:pointer;transition:all .2s}.btn-edit:hover{background:#dbeafe}.btn-delete{padding:8px 12px;background:#fef2f2;color:var(--error);border:none;border-radius:6px;font-size:.8125rem;font-weight:500;cursor:pointer;transition:all .2s}.btn-delete:hover{background:#fee2e2}.btn-small{padding:4px 10px;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:4px;font-size:.75rem;cursor:pointer;transition:all .2s}.btn-small:hover{background:#e2e8f0}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal{background:var(--card);border-radius:16px;width:100%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}.modal.large{max-width:700px}.modal-header{padding:20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.modal-header h2{font-size:1.125rem;font-weight:600}.close-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:none;border:none;font-size:1.5rem;color:var(--text-light);cursor:pointer;border-radius:6px;transition:all .2s}.close-btn:hover{background:var(--bg);color:var(--text)}.modal-form{padding:20px;display:flex;flex-direction:column;gap:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:8px}.generate-card h3{margin-bottom:20px}.generate-form{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap}.generate-form .form-group{flex:1;min-width:120px}.generate-form .btn-primary{flex-shrink:0}.new-codes{margin-top:20px;padding-top:20px;border-top:1px solid var(--border)}.new-codes h4{font-size:.875rem;font-weight:500;color:var(--text-light);margin-bottom:12px}.code-chips{display:flex;flex-wrap:wrap;gap:8px}.code-chip{font-family:monospace;font-size:.875rem;padding:6px 12px;background:var(--bg);border-radius:6px;cursor:pointer;transition:all .2s}.code-chip:hover{background:#e2e8f0}.code-chip.new{background:#ecfdf5;color:var(--success);font-weight:600}.code-chip.used{color:var(--text-light);text-decoration:line-through}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:12px;text-align:left;border-bottom:1px solid var(--border)}.data-table th{font-size:.75rem;font-weight:600;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em}.data-table td{font-size:.875rem}.table-scroll{max-height:420px;overflow-y:auto}.table-scroll .data-table{margin-bottom:0}.data-table tr.used td{color:var(--text-light)}.data-table .username{font-weight:500}.status-badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:500}.status-badge.permanent{background:#ecfdf5;color:var(--success)}.status-badge.active{background:#eff6ff;color:#3b82f6}.status-badge.expired{background:#fef2f2;color:var(--error)}.empty-state,.empty-text{text-align:center;padding:40px 20px;color:var(--text-light)}.empty-text{padding:20px}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:9999;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:white;border-radius:16px;padding:32px;max-width:400px;width:90%;box-shadow:0 20px 60px #0000004d;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.session-expired-modal{text-align:center}.modal-icon{font-size:3rem;margin-bottom:16px}.session-expired-modal h2{font-size:1.5rem;color:var(--text);margin-bottom:12px}.session-expired-modal p{font-size:1rem;color:var(--text);margin-bottom:8px;line-height:1.6}.modal-hint{font-size:.875rem;color:var(--text-light);font-style:italic}