/* ========================================
   CÍRCULO ZENIT - BLOG STYLES
   ======================================== */

/* ==================== NAVIGATION ==================== */
.main-nav {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    text-decoration: none;
}

.nav-logo .logo-text {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--primary-navy);
}

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

.nav-links a {
    font-weight: 500;
    color: var(--primary-navy);
    transition: var(--transition-fast);
    padding: 0.5rem 1rem;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-gold);
}

.btn-nav-cta {
    background: var(--accent-gold);
    color: var(--primary-navy);
    padding: 0.75rem 1.5rem !important;
    border-radius: 4px;
    font-weight: 600;
}

.btn-nav-cta:hover {
    background: var(--primary-navy);
    color: var(--white) !important;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-navy);
    cursor: pointer;
}

/* ==================== BLOG HEADER ==================== */
.blog-header {
    background: linear-gradient(135deg, var(--primary-navy) 0%, #051426 100%);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
    color: var(--white);
}

.blog-header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.blog-subtitle {
    font-size: 1.2rem;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== BLOG SECTION ==================== */
.blog-section {
    padding: var(--spacing-xl) 0;
    background: var(--gray-light);
}

/* Filters */
.blog-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--white);
    border: 2px solid var(--gray-medium);
    border-radius: 50px;
    color: var(--primary-navy);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.filter-btn.active {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
    color: var(--white);
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

/* Article Card */
.article-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(197, 160, 89, 0.15);
}

.article-card.featured {
    grid-column: span 2;
    flex-direction: row;
}

.article-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition-smooth);
}

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

.article-card.featured .article-image {
    width: 50%;
    height: 400px;
}

.article-content {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--gray-medium);
}

.article-category {
    background: var(--accent-gold);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
}

.article-date {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.article-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-navy);
}

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

.article-excerpt {
    color: var(--gray-medium);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    font-size: 0.75rem;
    color: var(--accent-gold);
    background: rgba(197, 160, 89, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.read-more {
    color: var(--accent-gold);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.read-more:hover {
    color: var(--primary-navy);
    gap: 0.75rem;
}

/* Loading State */
.loading-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--gray-medium);
}

.loading-state i {
    font-size: 3rem;
    color: var(--accent-gold);
    margin-bottom: var(--spacing-md);
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--gray-medium);
}

.empty-state i {
    font-size: 4rem;
    color: var(--gray-medium);
    opacity: 0.5;
    margin-bottom: var(--spacing-md);
}

/* ==================== NEWSLETTER SECTION ==================== */
.newsletter-section {
    background: linear-gradient(135deg, var(--primary-navy) 0%, #051426 100%);
    padding: var(--spacing-xl) 0;
}

.newsletter-box {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(197, 160, 89, 0.3);
    border-radius: 8px;
    padding: var(--spacing-lg);
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.newsletter-icon {
    font-size: 3rem;
    color: var(--accent-gold);
    margin-bottom: var(--spacing-md);
}

.newsletter-box h2 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.newsletter-box p {
    color: var(--light-text);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 0.875rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-family: var(--font-sans);
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--accent-gold);
    background: rgba(255, 255, 255, 0.15);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .article-card.featured {
        grid-column: span 1;
        flex-direction: column;
    }
    
    .article-card.featured .article-image {
        width: 100%;
        height: 250px;
    }
    
    .article-card.featured .article-title {
        font-size: 1.5rem;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .blog-filters {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}