/* Article Styles */
.article-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    padding: 3rem 0;
}

.breadcrumb {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.article-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.article-meta .category {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
}

.article-meta .date,
.article-meta .reading-time {
    opacity: 0.8;
}

.article-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 700;
}

.article-excerpt {
    font-size: 1.125rem;
    opacity: 0.9;
    line-height: 1.6;
    max-width: 800px;
}

.article-main {
    padding: 4rem 0;
    background: var(--bg);
}

.article-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
    align-items: start;
}

/* Article Sidebar */
.article-sidebar {
    position: sticky;
    top: 2rem;
}

.toc {
    background: var(--card);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.toc h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
}

.toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc li {
    margin-bottom: 0.5rem;
}

.toc a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
    display: block;
    padding: 0.5rem 0;
    border-left: 3px solid transparent;
    padding-left: 1rem;
}

.toc a:hover {
    color: var(--primary);
    border-left-color: var(--primary);
}

/* Article Content */
.article-content {
    background: var(--card);
    border-radius: var(--radius);
    padding: 3rem;
    box-shadow: var(--shadow);
    line-height: 1.7;
}

.article-content .article-image {
    margin-bottom: 2rem;
    border-radius: var(--radius);
    overflow: hidden;
}

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

.article-content h2 {
    font-size: 2rem;
    margin: 2.5rem 0 1.5rem 0;
    color: var(--text);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
}

.article-content h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem 0;
    color: var(--text);
}

.article-content h4 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem 0;
    color: var(--text);
}

.article-content p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.article-content li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

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

/* Pros and Cons */
.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.pros,
.cons {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.pros h4 {
    color: var(--success);
    margin-bottom: 1rem;
}

.cons h4 {
    color: var(--error);
    margin-bottom: 1rem;
}

.pros ul,
.cons ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pros li,
.cons li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.pros li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.cons li::before {
    content: "✗";
    position: absolute;
    left: 0;
    color: var(--error);
    font-weight: bold;
}

/* Comparison Table */
.comparison-table {
    margin: 2rem 0;
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

.comparison-table td {
    color: var(--text-secondary);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    margin: 3rem 0;
}

.cta-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: white;
}

.cta-section p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: white;
    color: var(--primary);
    padding: 1rem 2rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

/* Related Articles */
.related-articles {
    background: var(--bg-secondary);
    padding: 4rem 0;
}

.related-articles h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: var(--text);
}

.related-articles .articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* ========================================
   RESPONSIVE DESIGN - ARTICLES
   ======================================== */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    .article-layout {
        grid-template-columns: 220px 1fr;
        gap: 2.5rem;
    }
    
    .article-header h1 {
        font-size: 2.2rem;
    }
    
    .article-content {
        padding: 2.5rem;
    }
    
    .article-content h2 {
        font-size: 1.8rem;
    }
    
    .article-content h3 {
        font-size: 1.4rem;
    }
    
    .toc {
        padding: 1.75rem;
    }
    
    .related-articles .articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

/* Mobile Large (481px - 767px) */
@media (max-width: 767px) {
    .article-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .article-sidebar {
        position: static;
        order: 1;
    }
    
    .article-content {
        order: 2;
        padding: 2rem;
    }
    
    .article-header {
        padding: 2.5rem 0;
    }
    
    .article-header h1 {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .article-excerpt {
        font-size: 1rem;
    }
    
    .article-main {
        padding: 3rem 0;
    }
    
    .article-content h2 {
        font-size: 1.5rem;
        margin: 2rem 0 1.25rem 0;
    }
    
    .article-content h3 {
        font-size: 1.25rem;
        margin: 1.75rem 0 0.875rem 0;
    }
    
    .article-content h4 {
        font-size: 1.1rem;
        margin: 1.25rem 0 0.625rem 0;
    }
    
    .article-content p {
        font-size: 0.95rem;
        margin-bottom: 1.25rem;
    }
    
    .article-content ul,
    .article-content ol {
        padding-left: 1.5rem;
        margin-bottom: 1.25rem;
    }
    
    .pros-cons {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin: 1.5rem 0;
    }
    
    .pros,
    .cons {
        padding: 1.25rem;
    }
    
    .comparison-table {
        font-size: 0.9rem;
        margin: 1.5rem 0;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem;
    }
    
    .cta-section {
        padding: 1.5rem;
        margin: 2rem 0;
    }
    
    .cta-section h3 {
        font-size: 1.3rem;
    }
    
    .cta-button {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .toc {
        padding: 1.5rem;
    }
    
    .toc h3 {
        font-size: 1.1rem;
    }
    
    .toc a {
        font-size: 0.85rem;
        padding: 0.375rem 0;
        padding-left: 0.75rem;
    }
    
    .related-articles {
        padding: 3rem 0;
    }
    
    .related-articles h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    .related-articles .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Mobile Small (320px - 480px) */
@media (max-width: 480px) {
    .article-header {
        padding: 2rem 0;
    }
    
    .article-header h1 {
        font-size: 1.75rem;
        line-height: 1.3;
    }
    
    .article-excerpt {
        font-size: 0.95rem;
    }
    
    .article-main {
        padding: 2rem 0;
    }
    
    .article-content {
        padding: 1.5rem;
    }
    
    .article-content h2 {
        font-size: 1.3rem;
        margin: 1.75rem 0 1rem 0;
    }
    
    .article-content h3 {
        font-size: 1.1rem;
        margin: 1.5rem 0 0.75rem 0;
    }
    
    .article-content h4 {
        font-size: 1rem;
        margin: 1.25rem 0 0.5rem 0;
    }
    
    .article-content p {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
    
    .article-content ul,
    .article-content ol {
        padding-left: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .article-content li {
        font-size: 0.9rem;
        margin-bottom: 0.375rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
        margin-bottom: 1.25rem;
    }
    
    .article-meta .category {
        font-size: 0.8rem;
        padding: 0.2rem 0.6rem;
    }
    
    .article-meta .date,
    .article-meta .reading-time {
        font-size: 0.8rem;
    }
    
    .pros-cons {
        margin: 1.25rem 0;
    }
    
    .pros,
    .cons {
        padding: 1rem;
    }
    
    .pros h4,
    .cons h4 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .pros li,
    .cons li {
        font-size: 0.85rem;
        margin-bottom: 0.375rem;
    }
    
    .comparison-table {
        font-size: 0.8rem;
        margin: 1.25rem 0;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }
    
    .cta-section {
        padding: 1.25rem;
        margin: 1.75rem 0;
    }
    
    .cta-section h3 {
        font-size: 1.2rem;
        margin-bottom: 0.75rem;
    }
    
    .cta-section p {
        font-size: 0.9rem;
        margin-bottom: 1.25rem;
    }
    
    .cta-button {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
        width: 100%;
        max-width: 280px;
    }
    
    .toc {
        padding: 1.25rem;
    }
    
    .toc h3 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .toc a {
        font-size: 0.8rem;
        padding: 0.25rem 0;
        padding-left: 0.625rem;
    }
    
    .related-articles {
        padding: 2rem 0;
    }
    
    .related-articles h2 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }
    
    .related-articles .articles-grid {
        gap: 1.25rem;
    }
}

/* Landscape Mobile */
@media (max-width: 767px) and (orientation: landscape) {
    .article-header {
        padding: 1.5rem 0;
    }
    
    .article-header h1 {
        font-size: 1.8rem;
    }
    
    .article-main {
        padding: 2rem 0;
    }
    
    .article-content {
        padding: 1.75rem;
    }
}