:root {
            --primary: #4361ee;
            --secondary: #3f37c9;
            --success: #4cc9f0;
            --info: #4895ef;
            --warning: #f72585;
            --danger: #e63946;
            --light: #f8f9fa;
            --dark: #121212;
            --bg-dark: #1e1e1e;
            --card-dark: #252525;
            --text-dark: #e1e1e1;
            --text-light: #212529;
            --sidebar-width: 250px;
            --sidebar-collapsed: 70px;
            --transition: all 0.3s ease;
        }

        .light-mode {
            --bg-color: #f5f7fb;
            --card-bg: #ffffff;
            --text-color: #212529;
            --sidebar-bg: #ffffff;
            --border-color: #dee2e6;
            --hover-color: #f8f9fa;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        }

        .dark-mode {
            --bg-color: var(--bg-dark);
            --card-bg: var(--card-dark);
            --text-color: var(--text-dark);
            --sidebar-bg: var(--dark);
            --border-color: #444;
            --hover-color: #2a2a2a;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            transition: var(--transition);
            display: flex;
            min-height: 100vh;
        }
        
        .container {
            display: flex;
            flex: 1;
            min-height: 100vh;
            width: 100%;
        }

        /* Sidebar Styles */
        .sidebar {
            width: var(--sidebar-width);
            background-color: var(--sidebar-bg);
            height: 100vh;
            position: fixed;
            left: 0;
            top: 0;
            overflow-y: auto;
            transition: var(--transition);
            box-shadow: var(--shadow);
            z-index: 1000;
            padding-top: 70px;
        }

        .sidebar.collapsed {
            width: var(--sidebar-collapsed);
        }

        .sidebar-header {
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            background-color: var(--sidebar-bg);
            z-index: 1001;
            transition: var(--transition);
        }

        .sidebar.collapsed .sidebar-header {
            width: var(--sidebar-collapsed);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow: hidden;
            white-space: nowrap;
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            transition: var(--transition);
        }

        .logo-icon {
            font-size: 1.8rem;
            color: var(--primary);
            min-width: 30px;
        }

        .sidebar-menu {
            padding: 20px 0;
        }

        .sidebar ul {
            list-style: none;
        }

        .sidebar li {
            margin-bottom: 5px;
        }

        .menu-item {
            padding: 12px 20px;
            display: flex;
            align-items: center;
            gap: 15px;
            text-decoration: none;
            color: var(--text-color);
            transition: var(--transition);
            border-left: 4px solid transparent;
        }

        .menu-item:hover, .menu-item.active {
            background-color: var(--hover-color);
            border-left: 4px solid var(--primary);
        }

        .menu-item i {
            width: 20px;
            text-align: center;
        }

        .menu-text {
            transition: var(--transition);
            white-space: nowrap;
        }

        .sidebar.collapsed .menu-text {
            display: none;
        }

        /* Main Content Styles */
        .main-content {
            flex: 1;
            padding: 20px;
            padding-left: 80px;
            margin-left: 190px;
            transition: var(--transition);
        }

        .main-content.expanded {
            margin-left: 0px;
        }

        /* Header Styles */
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            background-color: var(--card-bg);
            border-radius: 10px;
            margin-bottom: 20px;
            box-shadow: var(--shadow);
            position: relative;
            width: 100%;
        }

        .school-info {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .school-logo {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            object-fit: cover;
            display: none;
        }

        .school-name {
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--primary);
            display: none;
        }

        .toggle-sidebar {
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-color);
        }

        .user-profile {
            display: flex;
            align-items: center;
            gap: 15px;
            position: relative;
        }

        .user-info {
            text-align: right;
            display: flex;
            flex-direction: column;
        }

        .user-name {
            font-weight: 600;
            font-size: 0.9rem;
        }

        .user-role {
            font-size: 0.7rem;
            opacity: 0.7;
        }

        .avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 1.2rem;
            cursor: pointer;
            overflow: hidden;
            border: 2px solid var(--border-color);
        }

        .avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .profile-menu {
            position: absolute;
            top: 100%;
            right: 0;
            background-color: var(--card-bg);
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 10px 0;
            width: 200px;
            z-index: 1000;
            display: none;
        }

        .profile-menu.show {
            display: block;
        }

        .profile-menu-item {
            padding: 10px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-color);
            transition: var(--transition);
        }

        .profile-menu-item:hover {
            background-color: var(--hover-color);
        }

        .theme-toggle {
            background: none;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            color: var(--text-color);
            margin-right: 15px;
        }

        /* Search Wrapper Styles */
        .search-wrapper {
            position: relative;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 20px;
            background-color: var(--card-bg);
            border-radius: 10px;
            margin-bottom: 20px;
            box-shadow: var(--shadow);
        }

        #searchCategory {
            padding: 8px 12px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            font-size: 14px;
            background-color: var(--bg-color);
            color: var(--text-color);
        }

        #globalSearch {
            padding: 10px 15px;
            border-radius: 6px;
            width: 230px;
            border: 1px solid var(--border-color);
            font-size: 14px;
            background-color: var(--bg-color);
            color: var(--text-color);
        }

        .results-box {
            position: absolute;
            top: 60px;
            left: 20px;
            width: 350px;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            box-shadow: var(--shadow);
            z-index: 9999;
            display: none;
            max-height: 300px;
            overflow-y: auto;
        }

        .result-item {
            padding: 10px;
            cursor: pointer;
            border-bottom: 1px solid var(--border-color);
        }

        .result-item:hover {
            background-color: var(--hover-color);
        }

        .result-title {
            font-weight: bold;
            color: var(--text-color);
        }

        .result-section {
            font-size: 12px;
            color: var(--text-color);
            opacity: 0.7;
        }

        /* Table Section Styles */
        .table-section {
            background-color: var(--card-bg);
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
            width: 100%;
        }

        .table-section h2 {
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 1.3rem;
        }

        /* Button styles */
        .action-buttons {
            margin-bottom: 20px;
            display: flex;
            gap: 10px;
        }

        .add-btn,
        .download-btn {
            padding: 10px 15px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.3s;
        }

        .add-btn {
            background-color: #4CAF50;
            color: white;
        }

        .add-btn:hover {
            background-color: #45a049;
        }

        .download-btn {
            background-color: #2196F3;
            color: white;
        }

        .download-btn:hover {
            background-color: #0b7dda;
        }

        .edit-btn,
        .delete-btn {
            padding: 5px 10px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            margin-right: 5px;
        }

        .edit-btn {
            background-color: #FFC107;
            color: black;
        }

        .delete-btn {
            background-color: #f44336;
            color: white;
        }

        /* Controls and Summary */
        .controls {
            margin-bottom: 20px;
        }

        .controls label {
            margin-right: 10px;
            font-weight: bold;
            color: var(--text-color);
        }

        .controls select {
            padding: 8px 12px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: var(--bg-color);
            color: var(--text-color);
        }

        .summary {
            display: flex;
            justify-content: space-around;
            background-color: var(--hover-color);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 1.1em;
            font-weight: bold;
            color: var(--text-color);
        }

        .filter-bar {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }

        .filter-bar select,
        .filter-bar input {
            flex: 1;
            padding: 8px 12px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: var(--bg-color);
            color: var(--text-color);
        }

        /* Table styles */
        .table-container {
            overflow-x: auto;
            max-height: 500px;
            position: relative;
            border: 1px solid var(--border-color);
            border-radius: 8px;
        }

        .records-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 0;
        }

        .records-table th,
        .records-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
            white-space: nowrap;
        }

        .records-table th {
            background-color: var(--primary);
            color: white;
            font-weight: 600;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .records-table tr:nth-child(even) {
            background-color: var(--hover-color);
        }

        .records-table tr:hover {
            background-color: rgba(67, 97, 238, 0.1);
        }

        /* Modal styles */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            overflow: auto;
            background-color: rgba(0, 0, 0, 0.5);
        }

        .modal-content {
            background-color: var(--card-bg);
            margin: 5% auto;
            padding: 20px;
            border: 1px solid var(--border-color);
            width: 90%;
            max-width: 600px;
            border-radius: 10px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: var(--shadow);
        }

        .close {
            color: var(--text-color);
            float: right;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
        }

        .close:hover {
            color: var(--primary);
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
            color: var(--text-color);
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            background-color: var(--bg-color);
            color: var(--text-color);
        }

        /* Toast notification */
        .toast {
            visibility: hidden;
            min-width: 250px;
            margin-left: -125px;
            background-color: var(--success);
            color: white;
            text-align: center;
            border-radius: 8px;
            padding: 16px;
            position: fixed;
            z-index: 3000;
            left: 50%;
            bottom: 30px;
            font-size: 16px;
            box-shadow: var(--shadow);
        }

        .toast.error {
            background-color: var(--danger);
        }

        .toast.show {
            visibility: visible;
            animation: fadein 0.5s, fadeout 0.5s 2.5s;
        }

        @keyframes fadein {
            from {
                bottom: 0;
                opacity: 0;
            }
            to {
                bottom: 30px;
                opacity: 1;
            }
        }

        @keyframes fadeout {
            from {
                bottom: 30px;
                opacity: 1;
            }
            to {
                bottom: 0;
                opacity: 0;
            }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .sidebar {
                width: var(--sidebar-collapsed);
                transform: translateX(-100%);
                left: -100%;
                position: fixed;
            }
            .sidebar.show {
                transform: translateX(100%);
                left: 0;
            }
            .sidebar .menu-text {
                display: none;
            }
            .main-content {
                margin-left: 0;
                width: 100%;
                padding: 10px;
            }
            
            .modal-content {
                width: 95%;
                margin: 5% auto;
                max-height: 85vh;
            }
        }

        /* Custom message box styles */
        .custom-message-box {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 15px 25px;
            border-radius: 5px;
            color: white;
            z-index: 1000;
            opacity: 0;
            transform: translateX(100%);
            transition: all 0.3s ease;
            max-width: 300px;
        }

        .custom-message-box.show {
            opacity: 1;
            transform: translateX(0);
        }

        .custom-message-box.success {
            background-color: #4CAF50;
        }

        .custom-message-box.error {
            background-color: #f44336;
        }

        .custom-message-box.info {
            background-color: #2196F3;
        }

        /* Custom confirm modal styles */
        .custom-confirm-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }

        .custom-confirm-modal.show {
            display: flex;
        }

        .custom-confirm-content {
            background-color: var(--card-bg);
            padding: 20px;
            border-radius: 5px;
            max-width: 400px;
            width: 90%;
            text-align: center;
        }

        .custom-confirm-content p {
            margin-bottom: 20px;
            color: var(--text-color);
        }

        .btn-confirm {
            background-color: #4CAF50;
            color: white;
            border: none;
            padding: 8px 16px;
            margin: 0 5px;
            border-radius: 4px;
            cursor: pointer;
        }

        .btn-cancel {
            background-color: #f44336;
            color: white;
            border: none;
            padding: 8px 16px;
            margin: 0 5px;
            border-radius: 4px;
            cursor: pointer;
        }