body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

.blog-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.blog-post {
    margin-bottom: 40px;
    padding: 20px;
    border-bottom: 1px solid #ddd;
}

.blog-post h2 {
    font-size: 24px;
    color: #333;
}

.blog-post p {
    color: #555;
}

.blog-post a {
    text-decoration: none;
    color: #007bff;
}

.blog-post a:hover {
    text-decoration: underline;
}

.blog-title {
    text-align: center;
    margin-bottom: 20px;
}

/* Blog-specific styles */
.blog-header {
    text-align: center;
    padding: 4rem 0 2rem;
}

.blog-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.blog-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.blog-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    padding: 0 1rem;
}

.filter-btn {
    background: var(--surface);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.blog-post-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border);
}

.blog-post-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-post-image {
    height: 200px;
    overflow: hidden;
    background: var(--surface);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.blog-post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-post-image .placeholder {
    color: var(--text-secondary);
    font-size: 1rem;
}

.blog-post-content {
    padding: 1.5rem;
}

.blog-post-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.blog-post-date {
    font-weight: 500;
}

.blog-post-category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 600;
}

.blog-post-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.blog-post-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.blog-post-title a:hover {
    color: var(--primary-color);
}

.blog-post-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.blog-post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.blog-tag {
    background: var(--surface);
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border);
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap 0.3s ease;
}

.read-more:hover {
    gap: 0.5rem;
}

.read-more::after {
    content: '→';
}

/* Individual blog post styles */
.blog-post {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 1rem;
}

.blog-post-header {
    text-align: center;
    margin-bottom: 3rem;
}

.blog-post-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.blog-post-header .meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.blog-post-body {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.blog-post-body h2 {
    font-size: 1.75rem;
    margin: 2rem 0 1rem;
    color: var(--primary-color);
}

.blog-post-body h3 {
    font-size: 1.5rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-primary);
}

.blog-post-body h4 {
    font-size: 1.25rem;
    margin: 1.25rem 0 0.5rem;
    color: var(--text-primary);
}

.blog-post-body p {
    margin-bottom: 1.25rem;
}

.blog-post-body ul,
.blog-post-body ol {
    margin-bottom: 1.25rem;
    margin-left: 2rem;
}

.blog-post-body li {
    margin-bottom: 0.5rem;
}

.blog-post-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--text-secondary);
    background: var(--surface);
    padding: 1rem 1.5rem;
    border-radius: 0 0.5rem 0.5rem 0;
}

.blog-post-body code {
    background: var(--surface);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9em;
    color: var(--primary-color);
}

.blog-post-body pre {
    background: var(--surface);
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
}

.blog-post-body pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.blog-post-body img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
    box-shadow: var(--shadow);
}

.blog-post-body .equation {
    text-align: center;
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--surface);
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    font-family: 'Times New Roman', serif;
    font-size: 1.1rem;
}

.blog-post-body .highlight {
    background: linear-gradient(120deg, transparent 0%, transparent 40%, #fef3c7 40%, #fef3c7 60%, transparent 60%);
    padding: 0.1rem 0.2rem;
}

.blog-post-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.blog-post-body th,
.blog-post-body td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.blog-post-body th {
    background: var(--surface);
    font-weight: 600;
    color: var(--text-primary);
}

/* Navigation between posts */
.blog-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    gap: 2rem;
}

.nav-prev,
.nav-next {
    flex: 1;
    text-align: center;
    padding: 1rem;
    background: var(--surface);
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.nav-prev:hover,
.nav-next:hover {
    background: white;
    box-shadow: var(--shadow);
}

.nav-prev a,
.nav-next a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: block;
}

.nav-prev a:hover,
.nav-next a:hover {
    color: var(--accent-color);
}

.nav-prev .nav-label,
.nav-next .nav-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 3rem 0;
}

.pagination a,
.pagination span {
    padding: 0.5rem 1rem;
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
    background: white;
}

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

.pagination .current {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

/* Search functionality */
.blog-search {
    max-width: 400px;
    margin: 0 auto 2rem;
    position: relative;
}

.blog-search input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 2rem;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.blog-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.blog-search .search-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

/* No posts message */
.no-posts {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.no-posts h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Author info */
.author-info {
    background: var(--surface);
    padding: 2rem;
    border-radius: 1rem;
    margin: 3rem 0;
    border: 1px solid var(--border);
}

.author-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.author-info p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Related posts */
.related-posts {
    margin: 3rem 0;
}

.related-posts h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* Responsive design for blog */
@media (max-width: 768px) {
    .blog-filters {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 1rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-post-header h1 {
        font-size: 2rem;
    }
    
    .blog-post-header .meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .blog-navigation {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .blog-post-body {
        font-size: 1rem;
    }
    
    .blog-post-body h2 {
        font-size: 1.5rem;
    }
    
    .blog-post-body h3 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .blog-post-header h1 {
        font-size: 1.75rem;
    }
    
    .filter-btn {
        white-space: nowrap;
    }
    
    .blog-post {
        padding: 2rem 0.75rem;
    }
    
    .blog-post-body ul,
    .blog-post-body ol {
        margin-left: 1.5rem;
    }
    
    .author-info,
    .related-posts {
        margin: 2rem 0.5rem;
    }
}