/* Copy toàn bộ CSS từ file trước vào đây */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f0f2f5;
        }

        .dashboard {
            display: flex;
            min-height: 100vh;
        }

        .campaign-list {
            padding: 0 1.7rem;
        }
        .delete-campaign {
            text-decoration: none;
            color: #fff;
            font-size: 10px;
        }
        .campaign-list i.fas.fa-times {
            background: #ff718f;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .campaign-item {
            display: flex;
            align-items: center;
            background: #2ba4ff;
            padding: 0.5rem;
            border-radius: 0.3rem;
            margin: 0.6rem 0;
        }

        /* Sidebar Styles */
        .sidebar {
            width: 320px;
            background: linear-gradient(180deg, #2c3e50 0%, #3498db 100%);
            color: white;
            padding: 20px 0;
            box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        }

        .sidebar-header {
            padding: 20px 25px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .sidebar-header h2 {
            font-size: 24px;
            margin-bottom: 5px;
        }

        .sidebar-header p {
            font-size: 14px;
            opacity: 0.8;
        }

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

        .menu-item {
            padding: 12px 25px;
            display: flex;
            align-items: center;
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: all 0.3s;
            border-left: 4px solid transparent;
        }

        .menu-item i {
            width: 25px;
            margin-right: 10px;
            font-size: 18px;
        }

        .menu-item:hover {
            background: rgba(255, 255, 255, 0.1);
            color: white;
        }

        .menu-item.active {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border-left-color: #f1c40f;
        }

        .menu-header {
            padding: 20px 25px 10px;
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            opacity: 0.6;
        }

        /* Main Content Styles */
        .main-content {
            flex: 1;
            padding: 30px;
            background: #f0f2f5;
        }

        .content-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
        }

        .content-header h1 {
            font-size: 28px;
            color: #2c3e50;
        }

        .btn-add {
            background: #27ae60;
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s;
        }

        .btn-add:hover {
            background: #219a52;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
        }

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

        .modal.show {
            display: flex;
        }

        .modal-content {
            background: white;
            padding: 30px;
            border-radius: 15px;
            width: 100%;
            max-width: 550px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }

        .modal-content h3 {
            margin-bottom: 20px;
            color: #2c3e50;
            font-size: 22px;
        }

        .modal-content input,
        .modal-content select,
        .modal-content textarea {
            width: 100%;
            padding: 12px;
            margin: 10px 0;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 15px;
            transition: all 0.3s;
        }

        .modal-content input:focus,
        .modal-content select:focus,
        .modal-content textarea:focus {
            outline: none;
            border-color: #3498db;
        }

        .modal-content .input-hint {
            font-size: 13px;
            color: #7f8c8d;
            margin: -5px 0 10px 0;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .modal-content .example {
            background: #f8f9fa;
            padding: 10px;
            border-radius: 6px;
            margin: 10px 0;
            font-size: 13px;
            color: #2c3e50;
            border-left: 3px solid #3498db;
        }

        .modal-content button {
            width: 100%;
            padding: 14px;
            background: #27ae60;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            margin-top: 15px;
        }

        .modal-close {
            float: right;
            font-size: 24px;
            cursor: pointer;
            color: #999;
        }

        .modal-close:hover {
            color: #333;
        }

        /* Alert Messages */
        .alert {
            padding: 15px 20px;
            border-radius: 8px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .alert.success {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .alert.error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .alert.info {
            background: #d1ecf1;
            color: #0c5460;
            border: 1px solid #bee5eb;
        }

        /* Campaign Info Card */
        .campaign-info {
            background: white;
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 25px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .campaign-info h2 {
            color: #2c3e50;
            margin-bottom: 15px;
        }

        .campaign-info p {
            color: #7f8c8d;
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 10px 0;
        }

        .campaign-info p i {
            width: 20px;
            color: #3498db;
        }

        .web-source-badge {
            background: #3498db;
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 14px;
            display: inline-block;
            margin-left: 10px;
        }

        /* Data Table */
        .data-table-container {
            background: white;
            border-radius: 15px;
            padding: 20px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .table-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .table-header h3 {
            color: #2c3e50;
            font-size: 18px;
        }

        .table-header input {
            padding: 10px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            width: 250px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th {
            text-align: left;
            padding: 15px;
            background: #f8f9fa;
            color: #2c3e50;
            font-weight: 600;
            border-bottom: 2px solid #e0e0e0;
        }

        td {
            padding: 15px;
            border-bottom: 1px solid #e0e0e0;
            color: #555;
        }

        tr:hover {
            background: #f8f9fa;
        }

        .no-data {
            text-align: center;
            padding: 40px;
            color: #999;
            font-style: italic;
        }

        .no-data i {
            font-size: 50px;
            margin-bottom: 15px;
            color: #ddd;
        }

        .stats-row {
            display: flex;
            gap: 20px;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #e0e0e0;
        }

        .stat-item {
            flex: 1;
            text-align: center;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 10px;
        }

        .stat-number {
            font-size: 24px;
            font-weight: bold;
            color: #2c3e50;
        }

        .stat-label {
            color: #7f8c8d;
            font-size: 14px;
            margin-top: 5px;
        }

        .copy-btn {
            background: none;
            border: none;
            color: #3498db;
            cursor: pointer;
            margin-left: 10px;
            font-size: 14px;
        }

        .copy-btn:hover {
            color: #2980b9;
        }