: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: var(--toastify-color-warning);--toastify-icon-color-error: var(--toastify-color-error);--toastify-container-width: fit-content;--toastify-toast-width: 320px;--toastify-toast-offset: 16px;--toastify-toast-top: max(var(--toastify-toast-offset), env(safe-area-inset-top));--toastify-toast-right: max(var(--toastify-toast-offset), env(safe-area-inset-right));--toastify-toast-left: max(var(--toastify-toast-offset), env(safe-area-inset-left));--toastify-toast-bottom: max(var(--toastify-toast-offset), env(safe-area-inset-bottom));--toastify-toast-background: #fff;--toastify-toast-padding: 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Toastify__slideOutUp{0%{transform:translate3d(0,var(--y),0)}to{visibility:hidden;transform:translate3d(0,-500px,0)}}.Toastify__slide-enter--top-left,.Toastify__slide-enter--bottom-left{animation-name:Toastify__slideInLeft}.Toastify__slide-enter--top-right,.Toastify__slide-enter--bottom-right{animation-name:Toastify__slideInRight}.Toastify__slide-enter--top-center{animation-name:Toastify__slideInDown}.Toastify__slide-enter--bottom-center{animation-name:Toastify__slideInUp}.Toastify__slide-exit--top-left,.Toastify__slide-exit--bottom-left{animation-name:Toastify__slideOutLeft;animation-timing-function:ease-in;animation-duration:.3s}.Toastify__slide-exit--top-right,.Toastify__slide-exit--bottom-right{animation-name:Toastify__slideOutRight;animation-timing-function:ease-in;animation-duration:.3s}.Toastify__slide-exit--top-center{animation-name:Toastify__slideOutUp;animation-timing-function:ease-in;animation-duration:.3s}.Toastify__slide-exit--bottom-center{animation-name:Toastify__slideOutDown;animation-timing-function:ease-in;animation-duration:.3s}@keyframes Toastify__spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.layout{display:flex;flex-direction:column;height:100vh}.layout-body{display:flex;flex:1;overflow:hidden}.main-content{flex:1;padding:20px;overflow-y:auto;background-color:#f5f5f5}.header{background-color:#2c3e50;color:#fff;padding:0 20px;box-shadow:0 2px 4px #0000001a}.header-content{display:flex;justify-content:space-between;align-items:center;height:60px}.header-title{margin:0;font-size:1.5rem;font-weight:600}.header-actions{display:flex;align-items:center;gap:15px}.user-info{font-size:.9rem;opacity:.9}.logout-btn{background-color:#e74c3c;color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer;font-size:.9rem;transition:background-color .2s}.logout-btn:hover{background-color:#c0392b}.sidebar{width:250px;background-color:#34495e;color:#fff;overflow-y:auto}.sidebar-nav{padding:20px 0}.nav-list{list-style:none;margin:0;padding:0}.nav-item{margin-bottom:5px}.nav-link{display:flex;align-items:center;padding:12px 20px;color:#fff;text-decoration:none;transition:background-color .2s;border-left:3px solid transparent}.nav-link:hover{background-color:#ffffff1a}.nav-link.active{background-color:#3498db;border-left-color:#2980b9}.nav-icon{margin-right:12px;font-size:1.2rem}.nav-label{font-size:.95rem;font-weight:500}.dashboard{width:100%;max-width:none}.dashboard h2{color:#2c3e50;margin-bottom:30px}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-bottom:40px}.dashboard-card{background:#fff;padding:25px;border-radius:8px;box-shadow:0 2px 4px #0000001a;text-align:center}.dashboard-card h3{color:#7f8c8d;font-size:1rem;margin:0 0 15px;font-weight:500}.card-number{font-size:2.5rem;font-weight:700;color:#2c3e50;margin:0}.dashboard-section{background:#fff;padding:25px;border-radius:8px;box-shadow:0 2px 4px #0000001a}.dashboard-section h3{color:#2c3e50;margin:0 0 20px}.activity-list{display:flex;flex-direction:column;gap:15px}.activity-item{display:flex;align-items:center;padding:15px;background-color:#f8f9fa;border-radius:6px;border-left:4px solid #3498db}.activity-time{color:#7f8c8d;font-size:.9rem;margin-right:20px;min-width:80px}.activity-text{color:#2c3e50}.teachers{max-width:1200px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.page-header h2{color:#2c3e50;margin:0}.btn-primary{background-color:#3498db;color:#fff;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;font-size:.9rem;transition:background-color .2s}.btn-primary:hover{background-color:#2980b9}.search-section{display:flex;gap:15px;margin-bottom:20px}.search-input{flex:1;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:.9rem}.filter-select{padding:10px;border:1px solid #ddd;border-radius:4px;font-size:.9rem;min-width:150px}.teachers-table{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 4px #0000001a}.teachers-table table{width:100%;border-collapse:collapse}.teachers-table th{background-color:#f8f9fa;padding:15px;text-align:left;font-weight:600;color:#2c3e50;border-bottom:1px solid #dee2e6}.teachers-table td{padding:15px;border-bottom:1px solid #dee2e6;color:#495057}.teachers-table tr:hover{background-color:#f8f9fa}.btn-edit{background-color:#17a2b8;color:#fff;border:none;padding:6px 12px;border-radius:3px;cursor:pointer;font-size:.8rem;margin-right:5px}.btn-edit:hover{background-color:#138496}.btn-delete{background-color:#dc3545;color:#fff;border:none;padding:6px 12px;border-radius:3px;cursor:pointer;font-size:.8rem}.btn-delete:hover{background-color:#c82333}.subjects{max-width:1200px}.subjects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.subject-card{background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 4px #0000001a;transition:transform .2s}.subject-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.subject-card h3{color:#2c3e50;margin:0 0 10px;font-size:1.2rem}.subject-department{color:#3498db;font-weight:500;margin:0 0 8px}.subject-credits,.subject-teachers{color:#7f8c8d;margin:5px 0;font-size:.9rem}.subject-actions{margin-top:15px;display:flex;gap:10px}.classrooms{max-width:1200px}.classrooms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:20px}.classroom-card{background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 4px #0000001a;transition:transform .2s}.classroom-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.classroom-card h3{color:#2c3e50;margin:0 0 10px;font-size:1.2rem}.classroom-capacity{color:#7f8c8d;margin:0 0 15px;font-size:.9rem}.classroom-equipment{margin-bottom:15px}.equipment-tag{display:inline-block;background-color:#e9ecef;color:#495057;padding:4px 8px;border-radius:12px;font-size:.8rem;margin-right:8px;margin-bottom:5px}.classroom-status{font-weight:500;margin-bottom:15px}.classroom-status.available{color:#28a745}.classroom-status.occupied{color:#dc3545}.classroom-actions{display:flex;gap:10px}.schedule{max-width:1200px}.schedule-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:15px;background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a}.week-navigation{display:flex;align-items:center;gap:15px}.btn-nav{background-color:#6c757d;color:#fff;border:none;padding:8px 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