/* =====================================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
   ===================================================== */
:root {
    /* Colores principales */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    
    /* Colores de texto */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    /* Colores de fondo */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    /* Colores de estado */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Bordes */
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    
    /* Transiciones */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Anchura máxima del contenedor */
    --container-max-width: 1200px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Enlaces */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Imágenes */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Listas */
ul, ol {
    list-style: none;
}

/* Botones base */
button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

/* Inputs base */
input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

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

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

/* =====================================================
   HEADER
   ===================================================== */
.site-header {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.main-nav {
    display: none;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .main-nav {
        display: flex;
    }
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

/* Menú móvil */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Menú móvil activo */
@media (max-width: 767px) {
    .main-nav.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-primary);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: var(--spacing-xl) 0;
}

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

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Buscador */
.search-container {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg);
    padding-right: 60px;
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    padding: var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    transition: background var(--transition-fast);
}

.search-button:hover {
    background: var(--primary-dark);
}

/* Estadísticas */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-secondary);
}

/* =====================================================
   CATEGORÍAS
   ===================================================== */
.categories-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

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

.category-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

.category-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.category-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.category-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* =====================================================
   FILTROS
   ===================================================== */
.reviews-section {
    padding: var(--spacing-xl) 0;
}

.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    transition: border-color var(--transition-fast);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* =====================================================
   GRID DE RESEÑAS
   ===================================================== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.review-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.review-card-link {
    display: block;
    color: inherit;
}

.review-card-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.review-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.review-card:hover .review-card-image img {
    transform: scale(1.05);
}

.discount-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--error-color);
    color: white;
    padding: 4px 12px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.875rem;
}

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

.review-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

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

/* Rating */
.review-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.stars-container {
    display: flex;
    gap: 2px;
}

.star {
    color: #ddd;
    font-size: 1rem;
}

.star.filled {
    color: var(--warning-color);
}

.star.half {
    position: relative;
    color: #ddd;
}

.star.half::before {
    content: '★';
    position: absolute;
    color: var(--warning-color);
    width: 50%;
    overflow: hidden;
}

.rating-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.reviews-count {
    font-size: 0.875rem;
    color: var(--text-light);
}

.review-summary {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.review-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.review-price {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.current-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
}

.original-price {
    font-size: 1rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.review-cta {
    color: var(--primary-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* No results */
.no-results {
    text-align: center;
    padding: var(--spacing-xl);
}

.no-results p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.reset-filters-btn {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: background var(--transition-fast);
}

.reset-filters-btn:hover {
    background: var(--primary-dark);
}

/* =====================================================
   PÁGINA DE RESEÑA INDIVIDUAL
   ===================================================== */
.breadcrumbs {
    background: var(--bg-secondary);
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
}

.breadcrumbs .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.breadcrumbs a {
    color: var(--text-secondary);
}

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

.separator {
    color: var(--text-light);
}

.current {
    color: var(--text-primary);
    font-weight: 500;
}

/* Layout principal */
.review-content {
    padding: var(--spacing-xl) 0;
}

.review-content .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .review-content .container {
        grid-template-columns: 1fr 350px;
    }
}

/* Artículo de reseña */
.review-article {
    background: var(--bg-primary);
}

.review-header {
    margin-bottom: var(--spacing-lg);
}

.review-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.category-badge {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.review-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .review-title {
        font-size: 2.5rem;
    }
}

.review-image {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.review-image img {
    width: 100%;
    height: auto;
}

.review-summary {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.summary-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Información rápida */
.quick-info {
    margin-bottom: var(--spacing-lg);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
}

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

.info-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.info-value {
    font-weight: 600;
    color: var(--text-primary);
}

.price-info {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
}

/* CTA Principal */
.main-cta {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--accent-color);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-size: 1.125rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.large {
    font-size: 1.25rem;
    padding: var(--spacing-md) var(--spacing-xl);
}

.cta-icon {
    font-size: 1.25rem;
}

.guarantee {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
}

.guarantee-icon {
    font-size: 1.25rem;
}

/* Descripción */
.review-description {
    margin-bottom: var(--spacing-xl);
}

.review-description h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

.review-description h3 {
    font-size: 1.25rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.review-description p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    color: var(--text-secondary);
}

.review-description ul,
.review-description ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.review-description li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.review-description ul li {
    list-style: disc;
}

.review-description ol li {
    list-style: decimal;
}

/* Pros y Contras */
.pros-cons {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
    .pros-cons {
        grid-template-columns: 1fr 1fr;
    }
}

.pros,
.cons {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.pros {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.cons {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.pros h3,
.cons h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.pros ul,
.cons ul {
    padding-left: var(--spacing-lg);
}

.pros li,
.cons li {
    margin-bottom: var(--spacing-xs);
    list-style: disc;
}

/* Características */
.features-section {
    margin-bottom: var(--spacing-xl);
}

.features-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

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

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.feature-icon {
    font-size: 1.5rem;
}

.feature-text {
    font-weight: 500;
}

/* CTA Final */
.final-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xl);
}

.final-cta h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.final-cta p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.cta-discount {
    display: block;
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 4px;
}

/* Compartir */
.share-section {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    text-align: center;
}

.share-section h4 {
    margin-bottom: var(--spacing-sm);
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.share-btn svg {
    fill: white;
}

.share-btn.twitter {
    background: #1DA1F2;
}

.share-btn.twitter:hover {
    background: #1a8cd8;
}

.share-btn.facebook {
    background: #1877f2;
}

.share-btn.facebook:hover {
    background: #166fe5;
}

.share-btn.whatsapp {
    background: #25D366;
}

.share-btn.whatsapp:hover {
    background: #22c55e;
}

/* Sidebar */
.review-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.widget {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.widget h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

/* Widget de precio */
.price-widget {
    text-align: center;
}

.price-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.price-display .current {
    font-size: 2rem;
    font-weight: 700;
    color: var(--success-color);
}

.price-display .original {
    font-size: 1.25rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.discount-info {
    margin-bottom: var(--spacing-md);
}

.discount-amount {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--error-color);
    margin-bottom: 4px;
}

.discount-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.widget-cta {
    display: block;
    width: 100%;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: background var(--transition-fast);
}

.widget-cta:hover {
    background: var(--primary-dark);
}

/* Widget de garantía */
.guarantee-widget {
    text-align: center;
}

.guarantee-info {
    margin-bottom: var(--spacing-sm);
}

.guarantee-info .days {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--success-color);
}

.guarantee-info .text {
    color: var(--text-secondary);
}

.guarantee-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Widget de relacionados */
.related-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.related-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: background var(--transition-fast);
}

.related-item:hover {
    background: var(--bg-tertiary);
}

.related-item img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.related-info h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 4px;
    line-height: 1.3;
}

.related-rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.related-rating .star-small {
    font-size: 0.75rem;
}

/* =====================================================
   SECCIONES PÁGINA PRINCIPAL
   ===================================================== */
/* About Section */
.about-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.about-list {
    margin-top: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.about-list li {
    margin-bottom: var(--spacing-sm);
    list-style: disc;
    color: var(--text-secondary);
}

.about-list strong {
    color: var(--text-primary);
}

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

.feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.feature-card .feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Newsletter Section */
.newsletter-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.newsletter-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

@media (max-width: 640px) {
    .newsletter-form {
        flex-direction: column;
    }
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.newsletter-form button {
    background: var(--accent-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.newsletter-form button:hover {
    background: #d97706;
    transform: translateY(-2px);
}

.newsletter-form button.success {
    background: var(--success-color);
}

.newsletter-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.contact-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-methods {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
}

.contact-icon {
    font-size: 1.5rem;
}

/* =====================================================
   FOOTER
   ===================================================== */
.site-footer {
    background: var(--bg-tertiary);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-section a {
    color: var(--text-secondary);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.social-links svg {
    fill: var(--text-secondary);
    transition: fill var(--transition-fast);
}

.social-links a:hover svg {
    fill: white;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--bg-secondary);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.affiliate-disclosure {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* =====================================================
   BOTÓN VOLVER ARRIBA
   ===================================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* =====================================================
   PÁGINA 404
   ===================================================== */
.error-page {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.error-page h1 {
    font-size: 6rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.error-page h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.error-page p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.error-page .button {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 500;
    display: inline-block;
    transition: background var(--transition-fast);
}

.error-page .button:hover {
    background: var(--primary-dark);
}

/* =====================================================
   ANIMACIONES
   ===================================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* =====================================================
   UTILIDADES RESPONSIVE
   ===================================================== */
/* Ocultar en móvil */
@media (max-width: 767px) {
    .hide-mobile {
        display: none !important;
    }
}

/* Ocultar en desktop */
@media (min-width: 768px) {
    .hide-desktop {
        display: none !important;
    }
}

/* =====================================================
   OPTIMIZACIONES DE RENDIMIENTO
   ===================================================== */
/* Reduce motion para usuarios que lo prefieren */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Dark mode (opcional - preparado para futuro) */
@media (prefers-color-scheme: dark) {
    /* Las variables de color se pueden ajustar aquí para modo oscuro */
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    /* Ocultar elementos no necesarios para impresión */
    .site-header,
    .site-footer,
    .back-to-top,
    .share-section,
    .newsletter-section,
    .contact-section,
    .main-cta,
    .final-cta,
    .widget-cta {
        display: none !important;
    }
    
    /* Ajustar colores para impresión */
    body {
        color: #000;
        background: #fff;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    /* Mostrar URLs de enlaces */
    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }
    
    /* Evitar cortes de página en elementos importantes */
    .review-article,
    .pros-cons,
    .features-section {
        page-break-inside: avoid;
    }
}

/* =====================================================
   MEJORAS DE ACCESIBILIDAD
   ===================================================== */
/* Focus visible para navegación con teclado */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip link para accesibilidad */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Mejora contraste en hover */
a:hover,
button:hover {
    opacity: 0.8;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}
/* =====================================================
   LOADER DE PÁGINA
   ===================================================== */
.page-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    gap: var(--spacing-md);
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.page-loader p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}
/* =====================================================
   PÁGINAS LEGALES
   ===================================================== */
.legal-page {
    padding: var(--spacing-xl) 0;
    min-height: 70vh;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.legal-content h2 {
    font-size: 1.75rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.legal-content h3 {
    font-size: 1.25rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.legal-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    color: var(--text-secondary);
}

.legal-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.legal-content li {
    margin-bottom: var(--spacing-xs);
    list-style: disc;
    color: var(--text-secondary);
}

.legal-content section {
    margin-bottom: var(--spacing-xl);
}

.last-updated {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--bg-tertiary);
}

.error-404 {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}
.error-content {
    text-align: center;
    padding: var(--spacing-xl);
    max-width: 600px;
}
.error-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
}
.error-code {
    font-size: 6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-sm);
}
.error-message {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}
.error-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}
.error-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}
.error-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all var(--transition-fast);
}
.error-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}
.error-button.secondary {
    background: var(--bg-primary);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}
.error-button.secondary:hover {
    background: var(--primary-color);
    color: white;
}
.popular-links {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--bg-tertiary);
}
.popular-links h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}
.link-grid {
    display: grid;
    gap: var(--spacing-sm);
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
}
.link-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}
.link-item:hover {
    color: var(--primary-color);
}