:root{--primary:#6366f1;--primary-hover:#4f46e5;--bg-main:#f8fafc;--bg-card:#fff;--text-main:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--error:#ef4444;--success:#22c55e;--shadow:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);color:var(--text-main);font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5}.custom-red-btn{color:#dc2626;cursor:pointer;border:none;border-radius:1rem;margin:.25rem;padding:.25rem;transition:background-color .2s,color .2s}.custom-red-btn:hover{color:#fff;background-color:#dc2626}.custom-yellow-btn{color:#ca8a04;cursor:pointer;border:none;border-radius:1rem;margin:.25rem;padding:.25rem;transition:background-color .2s,color .2s}.custom-yellow-btn:hover{color:#fff;background-color:#ca8a04}.custom-blue-btn{color:#045aca;cursor:pointer;border:none;border-radius:1rem;margin:.25rem;padding:.25rem;transition:background-color .2s,color .2s}.custom-blue-btn:hover{color:#fff;background-color:#045aca}.custom-green-btn{color:#04ca0e;cursor:pointer;border:none;border-radius:1rem;margin:.25rem;padding:.25rem;transition:background-color .2s,color .2s}.custom-green-btn:hover{color:#fff;background-color:#04ca0e}.pagination-btn{color:#fff;background-color:#16a34a;border:none;border-radius:5px;margin-bottom:10px;padding:5px}.auth-container{background:linear-gradient(135deg,#eef2ff 0%,#f1f5f9 100%);justify-content:center;align-items:center;min-height:100vh;padding:1.5rem;display:flex}.auth-card{background:var(--bg-card);box-shadow:var(--shadow-lg);border-radius:1rem;width:100%;max-width:450px;padding:2.5rem}.auth-header{text-align:center;margin-bottom:2rem}.logo-icon{background-color:var(--primary);color:#fff;border-radius:1rem;justify-content:center;align-items:center;width:64px;height:64px;margin:0 auto 1.5rem;display:flex;box-shadow:0 10px 15px -3px #6366f166}.auth-header h1{color:#0f172a;margin-bottom:.5rem;font-size:1.875rem;font-weight:700}.auth-header p{color:var(--text-muted)}.auth-form{flex-direction:column;gap:1.25rem;display:flex}.input-group{flex-direction:column;gap:.5rem;display:flex}.input-group label{color:#334155;font-size:.875rem;font-weight:500}.input-wrapper{align-items:center;display:flex;position:relative}.input-icon{color:var(--text-muted);position:absolute;left:.75rem}.input-wrapper input,.input-wrapper select{border:1.5px solid var(--border);border-radius:.5rem;outline:none;width:100%;padding:.75rem 1rem .75rem 2.8rem;font-size:1rem;transition:all .2s}.input-wrapper input:focus,.input-wrapper select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.btn-primary{background-color:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:.5rem;justify-content:center;align-items:center;margin-top:.5rem;padding:.75rem;font-size:1rem;font-weight:600;transition:all .2s;display:flex}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-primary:disabled{opacity:.7;cursor:not-allowed}.error-message{color:var(--error);text-align:center;background-color:#fef2f2;border:1px solid #fee2e2;border-radius:.5rem;padding:.75rem;font-size:.875rem}.success-message{color:var(--success);text-align:center;background-color:#f0fdf4;border:1px solid #dcfce7;border-radius:.5rem;padding:.75rem;font-size:.875rem}.auth-footer{text-align:center;color:var(--text-muted);margin-top:2rem;font-size:.875rem}.auth-footer a{color:var(--primary);font-weight:600;text-decoration:none}.auth-footer a:hover{text-decoration:underline}.animate-spin{animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.dashboard-layout{min-height:100vh;display:flex}.sidebar{border-right:1.5px solid var(--border);background-color:#fff;flex-direction:column;width:240px;height:100vh;display:flex;position:sticky;top:0}.sidebar-header{align-items:center;gap:1rem;padding:2rem;display:flex}.sidebar-logo{background-color:var(--primary);color:#fff;border-radius:.75rem;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.5rem;font-weight:800;display:flex}.sidebar-header h2{color:#0f172a;font-size:1.5rem;font-weight:700}.sidebar-nav{flex-direction:column;flex:1;gap:.5rem;padding:0 1rem;display:flex}.nav-link{color:var(--text-muted);border-radius:.5rem;align-items:center;gap:.75rem;padding:.75rem 1rem;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.nav-link:hover{color:var(--primary);background-color:#f1f5f9}.nav-link.active{color:var(--primary);background-color:#6366f11a}.nav-link .arrow{opacity:0;margin-left:auto;transition:all .2s}.nav-link.active .arrow{opacity:1}.sidebar-footer{border-top:1.5px solid var(--border);padding:1.5rem}.user-info{align-items:center;gap:.75rem;margin-bottom:1.5rem;display:flex}.user-avatar{background-color:#e2e8f0;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-weight:600;display:flex}.user-details .user-name{font-size:.875rem;font-weight:600}.user-details .user-role{color:var(--text-muted);font-size:.75rem}.logout-btn{color:#ef4444;cursor:pointer;background:0 0;border:none;border-radius:.5rem;align-items:center;gap:.75rem;width:100%;padding:.75rem;font-weight:600;transition:all .2s;display:flex}.logout-btn:hover{background-color:#fef2f2}.dashboard-content{background-color:#f8fafc;flex:1;overflow-y:auto}.content-container{max-width:1200px;margin:0 auto;padding:2.5rem}.page-header{margin-bottom:2.5rem}.page-header h1{margin-bottom:.25rem;font-size:1.875rem;font-weight:700}.page-header p{color:var(--text-muted)}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin-bottom:2.5rem;display:grid}.stat-card{box-shadow:var(--shadow);background:#fff;border-radius:1rem;align-items:center;gap:1.25rem;padding:1.5rem;display:flex}.stat-icon{border-radius:.75rem;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.stat-info h3{color:var(--text-muted);margin-bottom:.25rem;font-size:.875rem}.stat-info p{font-size:1.5rem;font-weight:700}.table-container{box-shadow:var(--shadow);background:#fff;border-radius:1rem;overflow:hidden}table{border-collapse:collapse;width:100%}th{text-align:left;color:var(--text-muted);border-bottom:1.5px solid var(--border);background-color:#f8fafc;padding:1rem;font-size:.875rem;font-weight:600}td{border-bottom:1px solid var(--border);padding:1rem;font-size:.875rem}tr:last-child td{border-bottom:none}.status-badge{border-radius:9999px;padding:.25rem .75rem;font-size:.75rem;font-weight:600}.course-form{margin-top:1.5rem}.form-grid{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.form-group{flex-direction:column;display:flex}.full-width{grid-column:span 2}.form-group label{color:#111827;margin-bottom:.45rem;font-size:.95rem;font-weight:600}.form-group input,.form-group textarea,.form-group select{background:#fff;border:1px solid #d1d5db;border-radius:10px;outline:none;padding:.85rem 1rem;font-size:.95rem;transition:all .2s}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb1f}.form-group textarea{resize:vertical;min-height:130px}.submit-btn{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:10px;margin-top:1.25rem;padding:.95rem 1.5rem;font-weight:600;transition:all .2s}.submit-btn:hover{background:#1d4ed8}.submit-btn:disabled{opacity:.7;cursor:not-allowed}@media (width<=768px){.form-grid{grid-template-columns:1fr}.full-width{grid-column:span 1}}.status-pending{color:#a16207;background-color:#fefce8}.status-approved{color:#15803d;background-color:#f0fdf4}.status-rejected{color:#b91c1c;background-color:#fef2f2}.status-suspended{color:#374151;background-color:#f3f4f6}.flex-between{justify-content:space-between;align-items:center;display:flex}.flex-column{flex-direction:column;gap:1rem;display:flex}.grid-2{grid-template-columns:repeat(2,1fr);gap:1.5rem;display:grid}.grid-3{grid-template-columns:repeat(3,1fr);gap:1.5rem;display:grid}.grid-4{grid-template-columns:repeat(4,1fr);gap:1.5rem;display:grid}@media (width<=1024px){.grid-4{grid-template-columns:repeat(3,1fr)}}@media (width<=768px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}}@media (width<=480px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.card{background:var(--bg-card);border:1.5px solid var(--border);border-radius:1rem;padding:1.5rem;transition:all .2s}.card-hover:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.progress-container{background:#f1f5f9;border-radius:999px;width:100%;height:8px;overflow:hidden}.progress-fill{background:var(--primary);border-radius:999px;height:100%;transition:width .3s cubic-bezier(.4,0,.2,1)}.icon-box{border-radius:.75rem;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.filter-bar{flex-wrap:wrap;gap:1rem;margin-bottom:2rem;display:flex}.search-input{border:1.5px solid var(--border);border-radius:.75rem;flex:1;min-width:200px;padding:.75rem 1rem}.filter-select{border:1.5px solid var(--border);background:#fff;border-radius:.75rem;padding:.75rem 1rem}.course-card{flex-direction:column;height:100%;display:flex}.course-card-img{object-fit:cover;border-radius:.75rem;width:100%;height:180px;margin-bottom:1rem}.course-card-content{flex-direction:column;flex:1;display:flex}.course-card-meta{border-top:1px solid var(--border);justify-content:space-between;align-items:center;margin-top:auto;padding-top:1rem;display:flex}.timer-box{color:#ef4444;background:#fee2e2;border-radius:.5rem;padding:.5rem 1rem;font-family:monospace;font-size:1.5rem;font-weight:700}.question-badge{color:var(--text-muted);margin-bottom:.5rem;font-size:.75rem;display:block}.option-btn{text-align:left;border:1.5px solid var(--border);cursor:pointer;background:#fff;border-radius:.75rem;width:100%;padding:1rem;transition:all .2s}.option-btn:hover{border-color:var(--primary);background:#f5f3ff}.option-btn.selected{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary);background:#e0e7ff}.lesson-item{border:1px solid var(--border);background:#fff;border-radius:.75rem;align-items:center;gap:1rem;padding:1rem;display:flex}.lesson-item:hover{border-color:var(--primary)}.lesson-item.completed{background:#f0fdf4;border-color:#dcfce7}