body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }
        .header {
            background-color: #6b46c1;
            color: white;
            padding: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top-left-radius: 0.5rem;
            border-top-right-radius: 0.5rem;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }
        .logout-btn {
            padding: 0.5rem 1rem;
            background-color: white;
            color: #6b46c1;
            text-decoration: none;
            border-radius: 0.25rem;
        }
        .container {
            display: flex;
            min-height: calc(100vh - 4rem);
        }
        .sidebar {
            width: 16rem;
            padding: 1rem;
            background-color: white;
            box-shadow: 2px 0 4px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease-in-out;
            overflow-y: auto;
            max-height: calc(100vh - 4rem);
        }
        .sidebar.collapsed {
            transform: translateX(-100%);
        }
        .sidebar h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 1rem;
            margin-top: 2rem;
            color: #4a5568;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.5rem;
        }
        .sidebar h3:first-child {
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin-bottom: 1.5rem;
        }
        .sidebar ul li {
            margin-bottom: 0.25rem;
        }
        .sidebar ul li a {
            display: block;
            padding: 0.75rem 1rem;
            color: #4a5568;
            text-decoration: none;
            border-radius: 0.5rem;
            transition: all 0.2s ease;
            border-left: 3px solid transparent;
        }
        .sidebar ul li a.active {
            background-color: #edf2f7;
            font-weight: 600;
            color: #6b46c1;
            border-left-color: #6b46c1;
        }
        .sidebar ul li a:hover {
            background-color: #f7fafc;
            transform: translateX(4px);
        }
        .main-content {
            flex: 1;
            padding: 1.5rem;
        }
        .alert {
            padding: 0.75rem;
            margin-bottom: 1rem;
            border-radius: 0.25rem;
        }
        .alert-success {
            background-color: #f0fff4;
            border: 1px solid #48bb78;
            color: #2f855a;
        }
        .alert-danger {
            background-color: #fff5f5;
            border: 1px solid #fc8181;
            color: #c53030;
        }
        .welcome-message {
            padding: 1rem;
            background-color: white;
            border-radius: 0.5rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            margin-bottom: 1.5rem;
        }
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .stat-card {
            padding: 1rem;
            background-color: white;
            border-radius: 0.5rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            text-align: center;
        }
        .stat-icon {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }
        .stat-value {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .stat-label {
            font-size: 0.875rem;
            color: #718096;
        }
        .recent-activity {
            padding: 1rem;
            background-color: white;
            border-radius: 0.5rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            margin-bottom: 1.5rem;
        }
        .activity-header {
            margin-bottom: 1rem;
        }
        .btn {
            display: inline-block;
            padding: 0.5rem 1rem;
            color: white;
            text-decoration: none;
            border-radius: 0.25rem;
            background-color: #6b46c1;
        }
        .btn:hover {
            opacity: 0.9;
        }
        .page-header {
            padding: 1rem;
            background-color: white;
            border-radius: 0.5rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            margin-bottom: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .table-container {
            padding: 1rem;
            background-color: white;
            border-radius: 0.5rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            margin-bottom: 1.5rem;
        }
        .table {
            width: 100%;
            border-collapse: collapse;
            table-layout: fixed;
        }
        .table th,
        .table td {
            padding: 0.5rem;
            border: 1px solid #e2e8f0;
            text-align: left;
            word-wrap: break-word;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .table th {
            background-color: #edf2f7;
            font-weight: 600;
        }
        .actions {
            display: flex;
            gap: 0.5rem;
        }
        .btn-sm {
            padding: 0.25rem 0.5rem;
        }
        .btn-danger {
            background-color: #e53e3e;
        }
        .btn-success {
            background-color: #48bb78;
        }
        .pagination {
            display: flex;
            gap: 0.5rem;
            justify-content: center;
        }
        .pagination a,
        .pagination span {
            padding: 0.5rem 1rem;
            color: white;
            text-decoration: none;
            border-radius: 0.25rem;
            background-color: #6b46c1;
        }
        .pagination .current {
            background-color: #a0aec0;
            pointer-events: none;
        }
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 50;
        }
        .modal-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: white;
            padding: 1.5rem;
            border-radius: 0.5rem;
            width: 90%;
            max-width: 500px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }
        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.25rem;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 0.5rem;
            border: 1px solid #e2e8f0;
            border-radius: 0.25rem;
        }
        @media (max-width: 640px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .container {
                flex-direction: column;
            }
            .main-content {
                margin-left: 0;
                padding: 1rem;
            }
            .hamburger {
                display: block;
                position: fixed;
                top: 1rem;
                left: 1rem;
                z-index: 30;
                background-color: #6b46c1;
                color: white;
                padding: 0.5rem;
                border-radius: 0.25rem;
            }
            .dashboard-grid {
                grid-template-columns: 1fr;
            }
            .recent-activity div {
                grid-template-columns: 1fr;
            }
            .page-header,
            .table-container {
                padding: 0.75rem;
            }
            .table th,
            .table td {
                font-size: 0.875rem;
                padding: 0.25rem;
            }
            .modal-content {
                width: 95%;
            }
        }