/* Blog Page */
.blog-page {
    min-height: 100vh;
    padding: 140px 0 100px;
}

/* Search Bar */
.blog-search {
    max-width: 500px;
    margin: 0 auto 32px;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrapper .search-icon {
    position: absolute;
    left: 16px;
    color: var(--text-tertiary);
    font-size: 16px;
    pointer-events: none;
}

.search-input-wrapper input {
    width: 100%;
    padding: 14px 44px 14px 44px;
    border: 2px solid var(--border);
    border-radius: 50px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
}

.search-input-wrapper input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.search-input-wrapper input::placeholder {
    color: var(--text-tertiary);
}

.search-clear {
    position: absolute;
    right: 14px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 14px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 50%;
    transition: all 0.2s;
}

.search-clear:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.search-results-info {
    grid-column: 1 / -1;
    padding: 8px 0 16px;
    color: var(--text-secondary);
    font-size: 14px;
}

.search-results-info strong {
    color: var(--primary);
}

.blog-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 50px;
}

.blog-cat-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: 2px solid var(--border);
    border-radius: 50px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.blog-cat-btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.blog-cat-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
    gap: 32px;
}

.blog-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-lg);
    border-color: var(--primary);
}

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

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

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

.blog-card-category {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.blog-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.blog-card-meta i {
    color: var(--primary);
}

.blog-card-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.blog-card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.blog-read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    transition: gap 0.3s ease;
}

.blog-card:hover .blog-read-more {
    gap: 12px;
}

/* Article Page */
.article-page {
    min-height: 100vh;
    padding: 120px 0 80px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 32px;
    transition: gap 0.3s ease;
}

.back-link:hover {
    gap: 12px;
}

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

.article-header {
    margin-bottom: 40px;
}

.article-category {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.article-header h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 24px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.article-author-img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.article-author {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 15px;
}

.article-date {
    font-size: 13px;
    color: var(--text-tertiary);
}

.article-body {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.9;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

.article-body h1, .article-body h2, .article-body h3 {
    color: var(--text-primary);
    margin: 32px 0 16px;
    font-weight: 700;
}

.article-body h1 { font-size: 32px; }
.article-body h2 { font-size: 26px; }
.article-body h3 { font-size: 22px; }

.article-body p {
    margin-bottom: 20px;
}

.article-body img {
    width: 100%;
    border-radius: 12px;
    margin: 24px 0;
}

.article-body code {
    background: var(--bg-tertiary);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--primary);
    word-break: break-word;
}

.article-body pre {
    background: #1e293b;
    padding: 20px;
    border-radius: 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 24px 0;
    max-width: 100%;
}

.article-body pre code {
    background: none;
    color: #e2e8f0;
    padding: 0;
    font-size: 14px;
    line-height: 1.7;
    white-space: pre;
    word-break: normal;
    overflow-wrap: normal;
}

.article-body ul, .article-body ol {
    margin: 16px 0;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body blockquote {
    border-left: 4px solid var(--primary);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--bg-tertiary);
    border-radius: 0 12px 12px 0;
    font-style: italic;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.article-body thead {
    background: var(--bg-tertiary);
}

.article-body th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
}

.article-body td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.article-body tbody tr:last-child td {
    border-bottom: none;
}

.article-body tbody tr:hover {
    background: var(--bg-tertiary);
}

.article-footer {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.article-tags span {
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
}

.article-share {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
}

.article-share a {
    width: 36px;
    height: 36px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.article-share a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.article-loading {
    text-align: center;
    padding: 60px;
    color: var(--text-secondary);
}

.article-loading i {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 16px;
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .blog-page {
        padding: 100px 0 60px;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .blog-cat-btn {
        padding: 8px 16px;
        font-size: 13px;
    }

    .blog-cat-btn span {
        display: none;
    }

    .blog-categories {
        gap: 8px;
        margin-bottom: 30px;
    }

    .article-page {
        padding: 90px 0 60px;
    }

    .article-header h1 {
        font-size: 22px;
        line-height: 1.4;
    }

    .article-body {
        font-size: 15px;
        line-height: 1.8;
    }

    .article-body h2 {
        font-size: 20px;
    }

    .article-body h3 {
        font-size: 18px;
    }

    .article-body pre {
        padding: 14px;
        border-radius: 8px;
        margin: 16px -12px;
        font-size: 12px;
    }

    .article-body pre code {
        font-size: 12px;
        line-height: 1.6;
    }

    .article-body table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        font-size: 12px;
        margin: 16px 0;
    }

    .article-body th {
        white-space: nowrap;
    }

    .article-body th,
    .article-body td {
        padding: 8px 12px;
    }

    .article-body blockquote {
        padding: 12px 16px;
        margin: 16px 0;
    }

    .article-body ul, .article-body ol {
        padding-left: 18px;
    }

    .article-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .article-meta {
        gap: 12px;
    }

    .blog-card-image {
        height: 160px;
    }

    .blog-card-body {
        padding: 16px;
    }

    .blog-card-body h3 {
        font-size: 17px;
    }
}

@media (max-width: 480px) {
    .article-header h1 {
        font-size: 20px;
    }

    .article-body {
        font-size: 14px;
    }

    .article-body pre {
        padding: 12px;
        margin: 12px -8px;
    }

    .article-body pre code {
        font-size: 11px;
    }

    .blog-card-body {
        padding: 14px;
    }

    .blog-card-body h3 {
        font-size: 16px;
    }

    .blog-card-body p {
        font-size: 13px;
    }
}

/* Subcategories */
.blog-subcategories {
    margin-bottom: 40px;
}

.blog-subcategories .back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 24px;
    transition: gap 0.3s ease;
}

.blog-subcategories .back-link:hover {
    gap: 12px;
}

.subcategory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
    margin-top: 16px;
}

.subcategory-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 28px 20px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.subcategory-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 32px var(--shadow-lg);
    border-color: var(--primary);
}

.subcategory-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    margin-bottom: 16px;
    transition: transform 0.3s ease;
}

.subcategory-card:hover .subcategory-icon {
    transform: scale(1.1) rotate(5deg);
}

.subcategory-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.subcategory-card p {
    font-size: 13px;
    color: var(--text-tertiary);
}

@media (max-width: 768px) {
    .subcategory-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .subcategory-card {
        padding: 20px 16px;
    }

    .subcategory-icon {
        width: 52px;
        height: 52px;
        font-size: 24px;
    }
}

/* Article Layout with Sidebar */
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    align-items: start;
}

.article-main {
    min-width: 0;
}

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

.article-sidebar h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #6366f1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.related-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 8px;
    background: #f9fafb;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.related-item:hover {
    background: #f3f4f6;
    border-color: #e5e7eb;
    transform: translateY(-1px);
}

.related-item img {
    width: 70px;
    height: 50px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}

.related-info {
    flex: 1;
    min-width: 0;
}

.related-category {
    font-size: 0.65rem;
    font-weight: 600;
    color: #6366f1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.related-info h4 {
    font-size: 0.8rem;
    font-weight: 500;
    color: #1f2937;
    margin: 0.2rem 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-date {
    font-size: 0.7rem;
    color: #9ca3af;
}

/* Responsive: stack on mobile */
@media (max-width: 900px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    
    .article-sidebar {
        position: static;
        margin-top: 2rem;
        padding-top: 2rem;
        border-top: 1px solid #e5e7eb;
    }
    
    .related-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
}

@media (max-width: 600px) {
    .related-list {
        grid-template-columns: 1fr;
    }
}