* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --card-bg: rgba(255, 255, 255, 0.92);
            --text-color: #333;
            --shadow-color: rgba(0, 0, 0, 0.1);
            --primary-color: #e73c7e;
            --secondary-color: #23a6d5;
            --accent-color: #23d5ab;
            --highlight-color: #ffeb3b;
            --sidebar-bg: rgba(255, 255, 255, 0.95);
            --sidebar-width: 280px;
            --danger-color: #e74c3c;
            --success-color: #2ecc71;
        }
        body {
            background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
            background-size: 400% 400%;
            animation: gradient 15s ease infinite;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 20px;
            transition: background 0.5s;
            overflow-x: hidden;
        }
        @keyframes gradient {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        /* Sidebar Styling */
        .sidebar {
            position: fixed;
            top: 0;
            left: calc(-1 * var(--sidebar-width));
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--sidebar-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-right: 1px solid rgba(255, 255, 255, 0.2);
            box-shadow: 2px 0 20px var(--shadow-color);
            z-index: 1000;
            transition: left 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            display: flex;
            flex-direction: column;
            padding: 20px 0;
            overflow-y: auto;
            scrollbar-width: thin;
        }
        .sidebar.active {
            left: 0;
        }
        .sidebar-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.4s ease, visibility 0.4s ease;
            z-index: 999;
        }
        .sidebar-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .sidebar-header {
            padding: 20px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
            text-align: center;
        }
        .sidebar-header h2 {
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-bottom: 10px;
        }
        .sidebar-header p {
            color: var(--text-color);
            font-size: 0.9rem;
        }
        .menu-list {
            list-style: none;
            flex: 1;
            padding: 20px 0;
        }
        .menu-item {
            padding: 15px 20px;
            color: var(--text-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
            cursor: pointer;
            font-weight: 500;
            position: relative;
            overflow: hidden;
        }
        .menu-item:hover, .menu-item.active {
            background: rgba(231, 60, 126, 0.15);
            color: var(--primary-color);
            border-left-color: var(--primary-color);
            transform: translateX(5px);
        }
        .menu-item i {
            font-size: 1.1rem;
            width: 20px;
        }
        .menu-item.has-sub-menu[aria-expanded="true"] i.fa-chevron-down {
            transform: rotate(180deg);
        }
        .sub-menu-list {
            list-style: none;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding-left: 20px;
        }
        .sub-menu-list.active {
            max-height: 800px;
        }
        .menu-item.sub-menu {
            padding-left: 40px;
            font-size: 0.95rem;
        }
        .ripple {
            position: absolute;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            transform: scale(0);
            animation: ripple 0.6s linear;
            pointer-events: none;
        }
        @keyframes ripple {
            to {
                transform: scale(4);
                opacity: 0;
            }
        }
        .sidebar-footer {
            padding: 20px;
            border-top: 1px solid rgba(0, 0, 0, 0.1);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .menu-toggle {
            position: fixed;
            top: 20px;
            left: 20px;
            background: var(--card-bg);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            box-shadow: 0 5px 20px var(--shadow-color);
            z-index: 1001;
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .menu-toggle:hover {
            transform: rotate(90deg) scale(1.05);
            box-shadow: 0 8px 25px var(--shadow-color);
        }
        .navbar {
            width: 100%;
            max-width: 1200px;
            background: var(--card-bg);
            padding: 15px 20px;
            border-radius: 20px;
            box-shadow: 0 10px 30px var(--shadow-color);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            z-index: 100;
        }
        .user-profile {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(231, 60, 126, 0.1);
            padding: 5px 15px;
            border-radius: 20px;
        }
        .dark-mode-toggle {
            background: var(--accent-color);
            color: white;
            padding: 8px 15px;
            border-radius: 20px;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .dark-mode-toggle:hover {
            background: #1cb698;
        }
        .logout-btn {
            background: var(--secondary-color);
            color: white;
            padding: 8px 15px;
            border-radius: 20px;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            margin-left: 10px;
        }
        .logout-btn:hover {
            background: #1a8ac7;
        }
        .page-section {
            display: none;
            width: 100%;
            max-width: 1200px;
            animation: fadeIn 0.5s ease-in;
        }
        .page-section.active {
            display: block;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .header {
            text-align: center;
            margin-bottom: 30px;
            padding: 20px;
            background: var(--card-bg);
            border-radius: 20px;
            box-shadow: 0 10px 30px var(--shadow-color);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .header h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 10px;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
        }
        .header p {
            color: #7f8c8d;
            font-size: 1.2rem;
            margin-bottom: 20px;
        }
        .stats {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .stat-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 10px 20px;
            background: rgba(255, 255, 255, 0.7);
            border-radius: 10px;
            min-width: 120px;
            transition: transform 0.3s;
        }
        .stat-item:hover {
            transform: scale(1.05);
        }
        .stat-value {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary-color);
        }
        .stat-label {
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        .admin-container {
            background: var(--card-bg);
            padding: 30px;
            border-radius: 20px;
            box-shadow: 0 10px 30px var(--shadow-color);
            backdrop-filter: blur(15px);
        }
        .admin-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }
        .admin-search {
            padding: 10px 15px;
            border: 1px solid #ddd;
            border-radius: 20px;
            width: 300px;
        }
        .admin-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-height: 600px;
            overflow-y: auto;
        }
        .admin-item {
            background: rgba(255, 255, 255, 0.5);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid var(--secondary-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .admin-item.replied {
            border-left-color: var(--success-color);
        }
        .admin-actions {
            display: flex;
            gap: 10px;
        }
        .admin-btn {
            padding: 8px 12px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: background 0.3s;
        }
        .admin-btn.delete {
            background: var(--danger-color);
            color: white;
        }
        .admin-btn.reply {
            background: var(--primary-color);
            color: white;
        }
        .admin-btn.view {
            background: var(--accent-color);
            color: white;
        }
        .admin-btn.edit {
            background: var(--highlight-color);
            color: #333;
        }
        .reply-form {
            display: none;
            margin-top: 10px;
            width: 100%;
        }
        .reply-form.active {
            display: block;
        }
        .reply-textarea {
            width: 100%;
            height: 80px;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 5px;
            margin-bottom: 10px;
        }
        .chart-container {
            background: rgba(255, 255, 255, 0.5);
            padding: 20px;
            border-radius: 10px;
            margin: 20px 0;
        }
        .log-item {
            background: rgba(0, 0, 0, 0.05);
            padding: 10px;
            border-radius: 5px;
            margin-bottom: 5px;
            font-size: 0.9rem;
        }
        .form-group {
            margin-bottom: 20px;
            position: relative;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
            color: var(--text-color);
        }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-group input:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .btn {
            padding: 12px 25px;
            border: none;
            border-radius: 50px;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            color: white;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }
        .btn-secondary {
            background: linear-gradient(45deg, #7f8c8d, #95a5a6);
        }
        .btn-danger {
            background: linear-gradient(45deg, var(--danger-color), #c0392b);
        }
        body.dark-mode {
            --card-bg: rgba(30, 30, 40, 0.92);
            --text-color: #f0f0f0;
            --shadow-color: rgba(0, 0, 0, 0.4);
            --primary-color: #ff7eb3;
            --secondary-color: #65d6ff;
            --sidebar-bg: rgba(40, 40, 50, 0.95);
            background: linear-gradient(-45deg, #1a1a2e, #16213e, #013460, #533483);
            background-size: 400% 400%;
            animation: gradient 15s ease infinite;
        }
        body.dark-mode .header h1 {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
        }
        body.dark-mode .form-group input, 
        body.dark-mode .form-group textarea {
            background: #444;
            color: #f0f0f0;
            border-color: #555;
        }
        body.dark-mode .admin-item {
            background: rgba(0, 0, 0, 0.3);
            color: #f0f0f0;
        }
        body.dark-mode .log-item {
            background: rgba(255, 255, 255, 0.05);
        }
        body.dark-mode .chart-container {
            background: rgba(0, 0, 0, 0.3);
        }
        body.dark-mode .admin-search {
            background: #444;
            color: #f0f0f0;
            border-color: #555;
        }
        body.dark-mode .navbar,
        body.dark-mode .header,
        body.dark-mode .admin-container {
            background: var(--card-bg);
            border-color: rgba(255, 255, 255, 0.1);
        }
        @media(max-width: 768px) {
            :root {
                --sidebar-width: 250px;
            }
            .sidebar {
                width: 100%;
                max-width: var(--sidebar-width);
            }
            .header h1 {
                font-size: 2.2rem;
            }
            .stats {
                gap: 15px;
            }
            .stat-item {
                min-width: 100px;
                padding: 8px 15px;
            }
            .admin-header {
                flex-direction: column;
                gap: 10px;
            }
            .admin-search {
                width: 100%;
            }
            .admin-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .navbar {
                flex-direction: column;
                gap: 10px;
            }
        }
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.3);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.5);
        }
        .notification {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--card-bg);
            padding: 15px 25px;
            border-radius: 10px;
            box-shadow: 0 5px 15px var(--shadow-color);
            display: flex;
            align-items: center;
            gap: 10px;
            z-index: 1000;
            opacity: 0;
            transition: opacity 0.3s, top 0.3s;
        }
        .notification.show {
            opacity: 1;
            top: 30px;
            animation: slideDown 0.3s ease;
        }
        @keyframes slideDown {
            from {
                top: -20px;
                opacity: 0;
            }
            to {
                top: 30px;
                opacity: 1;
            }
        }
        .notification i {
            color: var(--accent-color);
        }
        /* Modal Styles */
        .modal {
            display: none;
            position: fixed;
            z-index: 1002;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
        }
        .modal-content {
            background: var(--card-bg);
            margin: 5% auto;
            padding: 30px;
            border-radius: 20px;
            width: 80%;
            max-width: 600px;
            max-height: 80vh;
            overflow-y: auto;
            box-shadow: 0 10px 30px var(--shadow-color);
        }
        .close {
            color: #aaa;
            float: right;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
        }
        .close:hover {
            color: var(--danger-color);
        }
        .user-details {
            white-space: pre-wrap;
            font-family: monospace;
            background: rgba(0, 0, 0, 0.05);
            padding: 15px;
            border-radius: 10px;
            margin-top: 10px;
        }
        .edit-form {
            display: none;
        }
        .edit-form.active {
            display: block;
        }
        .view-details {
            display: block;
        }
        .view-details.hidden {
            display: none;
        }