/* ========================================
   Article Page Styles
   ======================================== */

/* Breadcrumb */
.breadcrumb {
    background: var(--color-bg-secondary);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li:not(:last-child)::after {
    content: '›';
    margin-left: var(--spacing-sm);
    color: var(--color-text-light);
}

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

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

.breadcrumb li[aria-current="page"] {
    color: var(--color-text-light);
}

/* Article Container */
.article-container {
    padding: var(--spacing-2xl) 0;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-2xl);
    align-items: start;
}

/* Article Main */
.article-main {
    max-width: 800px;
}

/* Article Header */
.article-header {
    margin-bottom: var(--spacing-2xl);
}

.article-header .article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
}

.article-header .category {
    background: var(--color-primary);
    color: white;
    padding: 0.375rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
}

.article-header time {
    color: var(--color-text-secondary);
}

.article-title {
    font-family: var(--font-display);
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

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

.author-info {
    display: flex;
    flex-direction: column;
}

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

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

.featured-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

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

.article-content .lead {
    font-size: 1.3rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
}

.article-content h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
    line-height: 1.3;
}

.article-content h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.article-content h4 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

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

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.article-content li {
    list-style: inherit;
    margin-bottom: var(--spacing-sm);
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

.article-content a:hover {
    color: var(--color-primary-dark);
    text-decoration-thickness: 2px;
}

.article-content strong {
    font-weight: 600;
    color: var(--color-text-primary);
}

.article-content em {
    font-style: italic;
}

/* Special Content Boxes */
.key-takeaway,
.pro-tip,
.action-steps {
    background: var(--color-bg-secondary);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.key-takeaway {
    border-left-color: var(--color-primary);
}

.pro-tip {
    border-left-color: var(--color-secondary);
}

.action-steps {
    border-left-color: var(--color-accent);
}

.key-takeaway h4,
.pro-tip h4,
.action-steps h4 {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.action-steps ol {
    margin-bottom: 0;
}

/* In-Article Ads */
.ad-in-article {
    margin: var(--spacing-2xl) 0;
}

/* Article Footer */
.article-footer {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-border);
}

.tags {
    margin-bottom: var(--spacing-xl);
}

.tags strong {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.tags a {
    display: inline-block;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-right: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-base);
}

.tags a:hover {
    background: var(--color-primary);
    color: white;
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.share-buttons strong {
    color: var(--color-text-primary);
    margin-right: var(--spacing-sm);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
    transition: var(--transition-base);
}

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

.share-btn.facebook {
    background: #1877F2;
}

.share-btn.linkedin {
    background: #0A66C2;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Related Articles */
.related-articles {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 2px solid var(--color-border);
}

.related-articles h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

.related-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-base);
}

.related-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.related-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

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

.related-content h3 {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
}

.related-content h3 a {
    color: var(--color-text-primary);
}

.related-content h3 a:hover {
    color: var(--color-primary);
}

.related-content .reading-time {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* Sidebar */
.article-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-widget {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.sidebar-widget h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.sidebar-widget p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

/* Popular Posts */
.popular-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.popular-list li a {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.popular-list li a:hover {
    background: white;
}

.popular-number {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.875rem;
}

.popular-title {
    color: var(--color-text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.4;
}

.popular-list li a:hover .popular-title {
    color: var(--color-primary);
}

/* Newsletter Widget */
.newsletter-widget form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.newsletter-widget input {
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
}

.newsletter-widget input:focus {
    border-color: var(--color-primary);
}

.newsletter-widget button {
    width: 100%;
}

/* Category List */
.category-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.category-list li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    transition: var(--transition-base);
}

.category-list li a:hover {
    background: white;
    color: var(--color-primary);
}

.category-list span {
    color: var(--color-text-light);
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    
    .article-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .ad-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .article-title {
        font-size: 2rem;
    }
    
    .article-content {
        font-size: 1.05rem;
    }
    
    .article-content .lead {
        font-size: 1.15rem;
    }
    
    .article-content h2 {
        font-size: 1.75rem;
    }
    
    .article-content h3 {
        font-size: 1.35rem;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .article-sidebar {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .article-title {
        font-size: 1.75rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .share-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .share-btn {
        width: 100%;
    }
}