:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --europe-color: #4361ee;
            --asia-color: #f72585;
            --africa-color: #4cc9f0;
            --americas-color: #7209b7;
            --oceania-color: #3a0ca3;
        }
        .page-header {
            background: linear-gradient(135deg, rgba(169, 214, 229, 0.4) 0%, rgba(44, 125, 160, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(44, 125, 160, 0.2);
            position: relative;
            overflow: hidden;   color: var(--text-color);
        }
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
            margin-bottom: 0.5rem;
        }
        .breadcrumb-item a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb-item.active {
            color: var(--text-color);
        }
        .stats-card {
            background: white;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .stats-card:hover {
            transform: translateY(-5px);
        }
        .stats-icon {
            width: 60px;
            height: 60px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }
        .stats-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 0.25rem;
        }
        .stats-label {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .search-container {
            position: relative;
            margin-bottom: 1.5rem;
        }
        .search-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            z-index: 10;
        }
        .search-input {
            padding-left: 45px;
            border-radius: 8px;
            height: 50px;
            border: 1px solid #ddd;
            font-size: 1rem;
        }
        .filter-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .filter-btn {
            background-color: rgba(44, 125, 160, 0.1);
            border: 1px solid rgba(44, 125, 160, 0.2);
            border-radius: 6px;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            color: var(--primary-color);
            cursor: pointer;
            transition: all 0.2s;
        }
        .filter-btn:hover, .filter-btn.active {
            background-color: var(--primary-color);
            color: white;
        }
        .region-filter {
            background-color: var(--europe-color);
            color: white;
        }
        .region-asia {
            background-color: var(--asia-color);
        }
        .region-africa {
            background-color: var(--africa-color);
        }
        .region-americas {
            background-color: var(--americas-color);
        }
        .region-oceania {
            background-color: var(--oceania-color);
        }
        .country-table-container {
            overflow-x: auto;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            margin-bottom: 2rem;
        }
        .country-table {
            width: 100%;
            border-collapse: collapse;
            margin: 0;
        }
        .country-table thead {
            background-color: var(--light-gray);
            position: sticky;
            top: 0;
            z-index: 10;
        }
        .country-table th {
            padding: 1rem;
            text-align: left;
            font-weight: 600;
            color: var(--text-color);
            border-bottom: 2px solid var(--border-color);
            white-space: nowrap;
            cursor: pointer;
            user-select: none;
        }
        .country-table th:hover {
            background-color: rgba(44, 125, 160, 0.1);
        }
        .country-table th i {
            margin-left: 0.5rem;
            opacity: 0.5;
        }
        .country-table td {
            padding: 1rem;
            border-bottom: 1px solid var(--border-color);
            vertical-align: middle;
        }
        .country-table tbody tr {
            transition: background-color 0.2s;
        }
        .country-table tbody tr:hover {
            background-color: rgba(44, 125, 160, 0.05);
        }
        .country-flag {
            width: 30px;
            height: 20px;
            object-fit: cover;
            border-radius: 2px;
            margin-right: 0.75rem;
            border: 1px solid var(--border-color);
        }
        .country-name {
            font-weight: 600;
            color: var(--text-color);
        }
        .country-code {
            display: inline-block;
            background-color: var(--light-gray);
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-size: 0.8rem;
            font-family: monospace;
            color: var(--text-muted);
        }
        .population-badge {
            display: inline-block;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-size: 0.85rem;
            background-color: rgba(40, 167, 69, 0.1);
            color: var(--success-color);
        }
        .map-container {
            height: 400px;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            margin-bottom: 2rem;
        }
        #worldMap {
            height: 100%;
            width: 100%;
        }
        .country-detail {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.7);
            z-index: 1000;
            overflow-y: auto;
        }
        .country-modal {
            background-color: white;
            border-radius: 10px;
            width: 90%;
            max-width: 800px;
            margin: 2rem auto;
            padding: 2rem;
            position: relative;
        }
        .close-modal {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-muted);
            cursor: pointer;
        }
        .country-flag-large {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 1.5rem;
        }
        .country-info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        .info-item {
            padding: 1rem;
            border-radius: 8px;
            background-color: var(--light-gray);
        }
        .info-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.25rem;
        }
        .info-value {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-color);
        }
        .quiz-container {
            background-color: rgba(44, 125, 160, 0.05);
            border-radius: 8px;
            padding: 2rem;
            margin-top: 2rem;
            text-align: center;
        }
        .quiz-question {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }
        .quiz-options {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .quiz-option {
            padding: 1rem;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            background-color: white;
            cursor: pointer;
            transition: all 0.2s;
        }
        .quiz-option:hover {
            border-color: var(--primary-color);
            transform: translateY(-2px);
        }
        .quiz-option.correct {
            background-color: rgba(40, 167, 69, 0.1);
            border-color: var(--success-color);
            color: var(--success-color);
        }
        .quiz-option.incorrect {
            background-color: rgba(220, 53, 69, 0.1);
            border-color: #dc3545;
            color: #dc3545;
        }
        @media (max-width: 768px) {
            .country-table th, .country-table td {
                padding: 0.75rem 0.5rem;
            }
            .country-modal {
                width: 95%;
                padding: 1.5rem;
            }
        }
        .pagination-container {
            display: flex;
            justify-content: center;
            margin-top: 2rem;
        }
        .pagination {
            display: flex;
            gap: 0.25rem;
        }
        .page-item {
            list-style: none;
        }
        .page-link {
            display: block;
            padding: 0.5rem 0.75rem;
            border: 1px solid var(--border-color);
            background-color: white;
            color: var(--primary-color);
            text-decoration: none;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .page-link:hover, .page-link.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        .export-buttons {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .sort-asc::after {
            content: " ↑";
        }
        .sort-desc::after {
            content: " ↓";
        }
');
            printWindow.document.write(`
                table { width: 100%; border-collapse: collapse; margin: 20px 0; }
                th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
                th { background-color: #f2f2f2; }
                h1 { color: #2c7da0; }
            `);
            printWindow.document.write('