/* Blog-specific CSS - Instituto AlphaPro */

/* Blog Hero Section */
.blog-hero {
    background: var(--bg-hero);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
    opacity: 0.5;
    animation: float 15s ease-in-out infinite;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

.hero-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.hero-author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 4px solid var(--accent-secondary);
}

.hero-author-info h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.hero-author-info p {
    color: var(--accent-primary);
    font-weight: 500;
}

.hero-cta {
    margin-top: var(--spacing-xl);
}

/* Categories Section */
.categories-section {
    background: var(--bg-primary);
    padding: var(--spacing-xl) 0;
    border-bottom: 2px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: 50;
}

.categories-wrapper {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    padding: var(--spacing-sm) 0;
}

.categories-wrapper::-webkit-scrollbar {
    height: 4px;
}

.categories-wrapper::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.categories-wrapper::-webkit-scrollbar-thumb {
    background: var(--accent-secondary);
    border-radius: 2px;
}

.category-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--surface-card);
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-btn:hover {
    border-color: var(--accent-secondary);
    color: var(--accent-primary);
}

.category-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--text-inverted);
}

/* Blog Content */
.blog-content {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

/* Featured Article */
.featured-article {
    background: var(--surface-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-elevated);
    margin-bottom: var(--spacing-3xl);
    display: grid;
    grid-template-columns: 1fr;
    border: 1px solid var(--border-primary);
}

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

.featured-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

@media (min-width: 768px) {
    .featured-image {
        height: 100%;
    }
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.article-category {
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    background: var(--accent-primary);
    color: var(--text-inverted);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.featured-content {
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.featured-title {
    font-family: var(--font-serif);
    font-size: 1.875rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.featured-title a {
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.featured-title a:hover {
    color: var(--accent-primary);
}

.featured-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

.read-more {
    color: var(--accent-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.read-more:hover {
    color: var(--accent-hover);
    transform: translateX(5px);
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

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

/* Article Card */
.article-card {
    background: var(--surface-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-primary);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-elevated);
}

.article-card.hidden {
    display: none;
}

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

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.article-card:hover .article-image img {
    transform: scale(1.1);
}

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

.article-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.article-title a {
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.article-title a:hover {
    color: var(--accent-primary);
}

.article-excerpt {
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    flex: 1;
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-tertiary);
    flex-wrap: wrap;
}

.meta-date, .meta-reading, .meta-evidence {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Load More Button */
.load-more-wrapper {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.load-more-btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    background: var(--surface-card);
    border: 2px solid var(--accent-secondary);
    color: var(--accent-primary);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
}

.load-more-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--text-inverted);
    transform: translateY(-2px);
}

.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Newsletter Section */
.newsletter-section {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: var(--spacing-3xl) 0;
    border-top: 4px solid var(--accent-secondary);
}

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

.newsletter-content h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.newsletter-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

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

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

.newsletter-form-inline input {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.newsletter-form-inline input:focus {
    outline: none;
    border-color: var(--accent-secondary);
}

.newsletter-form-inline button {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-primary);
    color: var(--text-inverted);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.newsletter-form-inline button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.pagination-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-card);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.pagination-btn:hover {
    border-color: var(--accent-secondary);
    color: var(--accent-primary);
}

.pagination-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--text-inverted);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Search Bar */
.search-bar {
    position: relative;
    max-width: 400px;
    margin: 0 auto var(--spacing-2xl);
}

.search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    padding-right: 50px;
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-secondary);
}

.search-btn {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    padding: var(--spacing-sm);
    background: var(--accent-primary);
    border-radius: 50%;
    color: var(--text-inverted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-btn:hover {
    background: var(--accent-hover);
}

/* Tags Cloud */
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: var(--spacing-xl) 0;
}

.tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    cursor: pointer;
}

.tag:hover {
    background: var(--bg-secondary);
    color: var(--accent-primary);
}

.tag.active {
    background: var(--accent-primary);
    color: var(--text-inverted);
}

/* Animation for filtering */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-card.show {
    animation: fadeIn 0.5s ease;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .hero-author {
        flex-direction: column;
        text-align: center;
    }

    .categories-wrapper {
        padding-left: var(--spacing-md);
    }

    .featured-content {
        padding: var(--spacing-lg);
    }

    .featured-title {
        font-size: 1.5rem;
    }

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