/* ===== RESET Y CONFIGURACIÓN BASE ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #2c2c2c;
            background-color: #ffffff;
        }

        /* ===== VARIABLES CSS ===== */
        :root {
            --primary-color: #1a73e8;
            --secondary-color: #34a853;
            --accent-color: #ea4335;
            --text-primary: #202124;
            --text-secondary: #5f6368;
            --text-muted: #9aa0a6;
            --border-color: #dadce0;
            --card-background: #ffffff;
            --hover-background: #f8f9fa;
            --shadow-light: 0 1px 2px 0 rgba(60,64,67,.3), 0 1px 3px 1px rgba(60,64,67,.15);
            --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --max-width: 1200px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
        }

        /* ===== COMPONENTES BASE ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        .btn {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: 6px;
            font-size: 0.875rem;
            font-weight: 500;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }

        .btn-primary:hover {
            background-color: #1557b0;
            transform: translateY(-1px);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary-color);
            border: 1px solid var(--primary-color);
        }

        .btn-outline:hover {
            background-color: var(--primary-color);
            color: white;
        }

        /* ===== HEADER ===== */
        .header {
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }

        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) 0;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
        }

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

        .nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }

        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 0;
            transition: color 0.2s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--primary-color);
        }

        .search-container {
            position: relative;
        }

        .search-input {
            padding: 0.75rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 25px;
            font-size: 0.875rem;
            width: 300px;
            transition: all 0.2s ease;
        }

        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.1);
        }

        .search-results {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: var(--shadow-medium);
            max-height: 400px;
            overflow-y: auto;
            z-index: 1000;
            display: none;
        }

        /* ===== NAVEGACIÓN MÓVIL ===== */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.25rem;
            cursor: pointer;
        }

        /* ===== SECCIÓN HERO ===== */
        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: var(--spacing-xl) 0;
            text-align: center;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 300;
            margin-bottom: var(--spacing-sm);
        }

        .hero p {
            font-size: 1.25rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== CATEGORÍAS ===== */
        .categories {
            background-color: var(--hover-background);
            padding: var(--spacing-lg) 0;
        }

        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-sm);
        }

        .category-card {
            background: white;
            padding: var(--spacing-md);
            border-radius: 12px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-light);
        }

        .category-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-medium);
        }

        .category-card.active {
            background-color: var(--primary-color);
            color: white;
        }

        .category-icon {
            font-size: 2rem;
            margin-bottom: var(--spacing-xs);
        }

        /* ===== ARTÍCULOS ===== */
        .articles {
            padding: var(--spacing-xl) 0;
        }

        .articles-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .articles-header h2 {
            font-size: 2.5rem;
            font-weight: 300;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: var(--spacing-lg);
        }

        .article-card {
            background: var(--card-background);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-light);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-medium);
        }

        .article-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: linear-gradient(45deg, #f0f0f0, #e0e0e0);
        }

        .article-content {
            padding: var(--spacing-md);
        }

        .article-category {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 15px;
            font-size: 0.75rem;
            font-weight: 500;
            margin-bottom: var(--spacing-xs);
        }

        .article-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }

        .article-excerpt {
            color: var(--text-secondary);
            font-size: 0.875rem;
            margin-bottom: var(--spacing-sm);
            line-height: 1.6;
        }

        .article-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .article-author {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .author-avatar {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ===== PÁGINA DE ARTÍCULO ===== */
        .article-page {
            display: none;
            max-width: 800px;
            margin: 0 auto;
            padding: var(--spacing-xl) var(--spacing-sm);
        }

        .article-full {
            background: var(--card-background);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-light);
        }

        .article-full-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        .article-full-content {
            padding: var(--spacing-xl);
        }

        .article-full-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-md);
            line-height: 1.2;
        }

        .article-full-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-xl);
            padding-bottom: var(--spacing-md);
            border-bottom: 1px solid var(--border-color);
        }

        .article-full-content {
            font-size: 1.125rem;
            line-height: 1.8;
            color: var(--text-primary);
        }

        .article-full-content h2 {
            font-size: 1.75rem;
            font-weight: 600;
            margin: var(--spacing-xl) 0 var(--spacing-md) 0;
            color: var(--text-primary);
        }

        .article-full-content h3 {
            font-size: 1.375rem;
            font-weight: 600;
            margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
            color: var(--text-primary);
        }

        .article-full-content p {
            margin-bottom: var(--spacing-md);
        }

        .article-full-content img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: var(--spacing-lg) 0;
        }

        /* ===== COMENTARIOS ===== */
        .comments-section {
            margin-top: var(--spacing-xl);
            padding: var(--spacing-xl);
            border-top: 1px solid var(--border-color);
        }

        .comments-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--spacing-lg);
        }

        .comment-form {
            background: var(--hover-background);
            padding: var(--spacing-md);
            border-radius: 8px;
            margin-bottom: var(--spacing-lg);
        }

        .form-group {
            margin-bottom: var(--spacing-sm);
        }

        .form-group label {
            display: block;
            margin-bottom: 0.25rem;
            font-weight: 500;
            color: var(--text-primary);
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 0.875rem;
            transition: border-color 0.2s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        .comment {
            background: white;
            padding: var(--spacing-md);
            border-radius: 8px;
            margin-bottom: var(--spacing-sm);
            border-left: 3px solid var(--primary-color);
        }

        .comment-author {
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.25rem;
        }

        .comment-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-xs);
        }

        .comment-content {
            color: var(--text-secondary);
        }

        /* ===== FORMULARIO DE CONTACTO ===== */
        .contact {
            background-color: var(--hover-background);
            padding: var(--spacing-xl) 0;
        }

        .contact-content {
            max-width: 600px;
            margin: 0 auto;
            background: white;
            padding: var(--spacing-xl);
            border-radius: 12px;
            box-shadow: var(--shadow-light);
        }

        .contact h2 {
            text-align: center;
            margin-bottom: var(--spacing-lg);
            color: var(--text-primary);
        }

        /* ===== FOOTER ===== */
        .footer {
            background-color: var(--text-primary);
            color: white;
            padding: var(--spacing-xl) 0;
            text-align: center;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-section h3 {
            margin-bottom: var(--spacing-sm);
            color: var(--primary-color);
        }

        .footer-section a {
            color: #ccc;
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
        }

        .footer-section a:hover {
            color: var(--primary-color);
        }

        .footer-bottom {
            border-top: 1px solid #444;
            padding-top: var(--spacing-sm);
            color: #999;
        }

        /* ===== MODAL ===== */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
        }

        .modal-content {
            background-color: white;
            margin: 5% auto;
            padding: var(--spacing-lg);
            border-radius: 12px;
            width: 90%;
            max-width: 500px;
            box-shadow: var(--shadow-medium);
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: var(--spacing-md);
        }

        .close {
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-muted);
        }

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

        /* ===== UTILIDADES ===== */
        .hidden {
            display: none !important;
        }

        .text-center {
            text-align: center;
        }

        .text-muted {
            color: var(--text-muted);
        }

        .mt-1 { margin-top: var(--spacing-xs); }
        .mt-2 { margin-top: var(--spacing-sm); }
        .mt-3 { margin-top: var(--spacing-md); }
        .mt-4 { margin-top: var(--spacing-lg); }

        .mb-1 { margin-bottom: var(--spacing-xs); }
        .mb-2 { margin-bottom: var(--spacing-sm); }
        .mb-3 { margin-bottom: var(--spacing-md); }
        .mb-4 { margin-bottom: var(--spacing-lg); }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 768px) {
            .nav {
                display: none;
            }

            .mobile-menu-btn {
                display: block;
            }

            .search-input {
                width: 200px;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .articles-grid {
                grid-template-columns: 1fr;
            }

            .article-full-title {
                font-size: 2rem;
            }

            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .container {
                padding: 0 var(--spacing-xs);
            }
        }

        @media (max-width: 480px) {
            .header-content {
                flex-direction: column;
                gap: var(--spacing-sm);
            }

            .hero {
                padding: var(--spacing-lg) 0;
            }

            .categories-grid {
                grid-template-columns: 1fr;
            }

            .article-full-content {
                font-size: 1rem;
            }

            .article-full-title {
                font-size: 1.75rem;
            }
        }

        /* ===== ANIMACIONES ===== */
        .fade-in {
            animation: fadeIn 0.5s ease-in;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .slide-up {
            animation: slideUp 0.3s ease-out;
        }

        @keyframes slideUp {
            from { transform: translateY(20px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }