/* Blog Specific Styles */

/* Smooth scroll behavior for blog */
html {
    scroll-behavior: smooth;
}

/* Active state for top navigation */
.top-nav-link.active {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
}

/* Blog Header */
.blog-header {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--background-white) 0%, var(--background-light) 100%);
    text-align: center;
}

.blog-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.blog-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Blog Posts Section */
.blog-posts {
    padding: 80px 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

/* Blog Post Cards */
.blog-post {
    background: var(--background-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.blog-post:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Featured Post */
.blog-post.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    max-width: 100%;
}

.blog-post.featured .post-image {
    height: 100%;
    min-height: 300px;
}

.blog-post.featured .post-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.blog-post.featured .post-title {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

/* Post Image */
.post-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.post-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    opacity: 0.9;
    transition: var(--transition);
}

.blog-post:hover .post-image-placeholder {
    opacity: 1;
    transform: scale(1.02);
}

.blog-post:hover .post-image img {
    transform: scale(1.05);
}

.post-category {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Post Content */
.post-content {
    padding: 30px;
}

.post-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.post-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.post-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.4;
    transition: var(--transition);
}

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

.post-excerpt {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.post-tags .tag {
    padding: 6px 12px;
    background: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

/* Newsletter Section */
.newsletter {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1557b0 100%);
    color: white;
    padding: 80px 0;
}

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

.newsletter h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.newsletter p {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    gap: 15px;
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 15px 20px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    outline: none;
}

.newsletter-form button {
    padding: 15px 25px;
    border-radius: 50px;
    white-space: nowrap;
    background: white;
    color: var(--primary-color);
    border: none;
    font-weight: 600;
}

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

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.blog-post:nth-child(1) { animation-delay: 0.1s; }
.blog-post:nth-child(2) { animation-delay: 0.2s; }
.blog-post:nth-child(3) { animation-delay: 0.3s; }
.blog-post:nth-child(4) { animation-delay: 0.4s; }
.blog-post:nth-child(5) { animation-delay: 0.5s; }
.blog-post:nth-child(6) { animation-delay: 0.6s; }

/* Brand link styling */
.nav-brand a {
    text-decoration: none;
    color: inherit;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .blog-title {
        font-size: 2.5rem;
    }
    
    .blog-subtitle {
        font-size: 1.1rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .blog-post.featured {
        grid-template-columns: 1fr;
    }
    
    .blog-post.featured .post-image {
        height: 250px;
        min-height: 250px;
    }
    
    .blog-post.featured .post-content {
        padding: 30px;
    }
    
    .blog-post.featured .post-title {
        font-size: 1.5rem;
    }
    
    .post-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .newsletter h2 {
        font-size: 2rem;
    }
    
    .newsletter-form {
        flex-direction: column;
        gap: 15px;
    }
    
    .newsletter-form button {
        padding: 15px 20px;
    }
}

@media (max-width: 480px) {
    .blog-header {
        padding: 100px 0 60px;
    }
    
    .blog-title {
        font-size: 2rem;
    }
    
    .blog-posts {
        padding: 60px 0;
    }
    
    .post-content {
        padding: 20px;
    }
    
    .blog-post.featured .post-content {
        padding: 25px;
    }
    
    .post-title {
        font-size: 1.2rem;
    }
    
    .blog-post.featured .post-title {
        font-size: 1.3rem;
    }
    
    .newsletter {
        padding: 60px 0;
    }
    
    .newsletter h2 {
        font-size: 1.8rem;
    }
}

/* ========================================
   BLOG POST ARTICLE STYLES
   ======================================== */

.blog-post-article {
    width: 100%;
}

/* Post Header */
.post-header {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, var(--background-white) 0%, var(--background-light) 100%);
    text-align: center;
}

.back-to-blog {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 24px;
    transition: var(--transition);
}

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

.post-category-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.post-main-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-dark);
    max-width: 800px;
    margin: 0 auto 24px;
    line-height: 1.3;
}

.post-meta-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.author-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

.author-details {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.author-name {
    font-weight: 600;
    color: var(--text-dark);
}

.author-title {
    font-size: 0.85rem;
    color: var(--text-light);
}

.post-stats {
    display: flex;
    gap: 20px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.post-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.post-tags-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.post-tags-list .tag {
    padding: 6px 14px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Featured Image */
.post-featured-image {
    padding: 0 0 40px;
    background: var(--background-light);
}

.featured-image-wrapper {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

.featured-image-placeholder {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 80px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: white;
}

.featured-image-placeholder i {
    font-size: 4rem;
    opacity: 0.8;
}

.featured-image-placeholder span {
    font-size: 1.1rem;
    opacity: 0.7;
}

/* Post Body */
.post-body {
    padding: 60px 0;
    background: var(--background-white);
}

.post-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
    max-width: 1100px;
    margin: 0 auto;
    /* Grid items stretch by default, which leaves position: sticky on the
       sidebar no room to travel. */
    align-items: start;
}

.post-main-content {
    max-width: 100%;
}

.post-section {
    margin-bottom: 40px;
}

.post-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
}

.post-section h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 24px 0 12px;
}

.post-section p {
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 16px;
}

.post-section ul,
.post-section ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-medium);
}

.post-section li {
    margin-bottom: 10px;
    line-height: 1.7;
}

/* Quote */
.post-quote {
    background: var(--background-light);
    border-left: 4px solid var(--primary-color);
    padding: 24px 28px;
    margin: 28px 0;
    border-radius: 0 12px 12px 0;
}

.post-quote p {
    font-style: italic;
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.post-quote cite {
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: normal;
}

/* Info Box */
.info-box {
    background: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 12px;
    padding: 24px;
    margin: 24px 0;
}

.info-box h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1rem;
}

.info-box p {
    margin: 0;
    color: var(--text-medium);
}

/* Code Block */
.code-block {
    margin: 24px 0;
    border-radius: 12px;
    overflow: hidden;
    background: #1e293b;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: #0f172a;
    color: #94a3b8;
    font-size: 0.85rem;
}

.copy-code-btn {
    background: transparent;
    border: 1px solid #475569;
    color: #94a3b8;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.copy-code-btn:hover {
    background: #334155;
    color: white;
}

.code-block pre {
    margin: 0;
    padding: 20px;
    overflow-x: auto;
}

.code-block code {
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #e2e8f0;
}

/* Results Table */
.results-table {
    margin: 24px 0;
    overflow-x: auto;
}

.results-table table {
    width: 100%;
    border-collapse: collapse;
    background: var(--background-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.results-table th,
.results-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.results-table th {
    background: var(--background-light);
    font-weight: 600;
    color: var(--text-dark);
}

.results-table tr.highlight {
    background: rgba(37, 99, 235, 0.05);
}

.results-table tr.highlight td {
    color: var(--primary-color);
}

/* CTA Box */
.cta-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    color: white;
    padding: 32px;
    border-radius: 16px;
    text-align: center;
    margin-top: 40px;
}

.cta-box h4 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.cta-box p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
}

.cta-box .btn {
    background: white;
    color: var(--primary-color);
}

.cta-box .btn:hover {
    background: var(--background-light);
}

/* Sidebar */
.post-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 24px);
    height: fit-content;
    max-height: calc(100vh - var(--nav-height) - 48px);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.toc-nav a.active {
    color: var(--primary-color);
    font-weight: 600;
}

.sidebar-widget {
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.sidebar-widget h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

/* Author Widget */
.author-card {
    text-align: center;
}

.author-image {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 12px;
    border: 3px solid var(--primary-color);
}

.author-card h4 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.author-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.author-social {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.author-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background-light);
    color: var(--text-medium);
    border-radius: 8px;
    transition: var(--transition);
}

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

/* TOC Widget */
.toc-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-nav li {
    margin-bottom: 8px;
}

.toc-nav a {
    color: var(--text-medium);
    text-decoration: none;
    font-size: 0.9rem;
    display: block;
    padding: 6px 0;
    transition: var(--transition);
}

.toc-nav a:hover {
    color: var(--primary-color);
    padding-left: 8px;
}

/* Share Widget */
.share-buttons {
    display: flex;
    gap: 10px;
}

.share-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.share-btn.twitter {
    background: #1da1f2;
    color: white;
}

.share-btn.linkedin {
    background: #0077b5;
    color: white;
}

.share-btn.email {
    background: #ea4335;
    color: white;
}

.share-btn.copy {
    background: var(--background-light);
    color: var(--text-medium);
}

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* Related Posts */
.related-posts {
    padding: 60px 0;
    background: var(--background-light);
}

.related-posts h2 {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
    color: var(--text-dark);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.related-card {
    background: var(--background-white);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.related-image {
    height: 150px;
    overflow: hidden;
}

.related-placeholder {
    height: 100%;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5rem;
    opacity: 0.8;
}

.related-content {
    padding: 20px;
}

.related-date {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 8px;
    display: block;
}

.related-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.4;
}

/* Responsive Blog Post */
@media (max-width: 1024px) {
    .post-content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .post-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .sidebar-widget {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .post-header {
        padding: 100px 0 40px;
    }
    
    .post-main-title {
        font-size: 1.5rem;
    }
    
    .post-meta-info {
        flex-direction: column;
        gap: 16px;
    }
    
    .post-stats {
        flex-direction: column;
        gap: 8px;
        align-items: center;
    }
    
    .post-body {
        padding: 40px 0;
    }
    
    .post-section h2 {
        font-size: 1.3rem;
    }
    
    .post-sidebar {
        grid-template-columns: 1fr;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .post-header {
        padding: 80px 0 32px;
    }
    
    .featured-image-placeholder {
        padding: 60px 20px;
    }
    
    .featured-image-placeholder i {
        font-size: 3rem;
    }
    
    .code-block pre {
        padding: 16px;
    }
    
    .code-block code {
        font-size: 0.8rem;
    }
    
    .cta-box {
        padding: 24px;
    }
}

/* ========================================
   BLOG TOOLBAR — SEARCH & CATEGORY FILTERS
   ======================================== */

.blog-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.blog-search {
    position: relative;
    flex: 1 1 280px;
    max-width: 380px;
}

.blog-search .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 0.9rem;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 12px 40px 12px 40px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-dark);
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Suppress the browser's own clear affordance in favour of our button */
.search-input::-webkit-search-cancel-button {
    appearance: none;
}

.search-clear {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-light);
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.search-clear:hover {
    background: var(--background-alt);
    color: var(--text-dark);
}

.search-clear[hidden] {
    display: none;
}

.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-btn {
    padding: 8px 16px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-medium);
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    cursor: pointer;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.filter-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.filter-btn.active {
    color: #fff;
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.search-results {
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.search-results[hidden] {
    display: none;
}

/* Empty state for a search or filter with no matches */
.blog-empty-state {
    padding: 64px 24px;
    text-align: center;
    color: var(--text-medium);
}

.blog-empty-state[hidden] {
    display: none;
}

.blog-empty-state i {
    font-size: 2.5rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.blog-empty-state h2 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.blog-empty-state p {
    margin-bottom: 20px;
}

.blog-post[hidden] {
    display: none;
}

/* Newsletter feedback. The shared .success-message/.error-message rules are
   display: none until a .show class is added, so state it explicitly here. */
.newsletter-form {
    flex-wrap: wrap;
}

.newsletter-form .form-message {
    flex: 1 0 100%;
    display: block;
    order: -1;
    margin: 0 0 4px;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 0.9rem;
    text-align: left;
}

.newsletter-form .success-message {
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.32);
    color: #fff;
}

.newsletter-form .error-message {
    background: rgba(127, 29, 29, 0.35);
    border: 1px solid rgba(248, 113, 113, 0.5);
    color: #fee2e2;
}

.newsletter-form .field-error {
    flex: 1 0 100%;
    order: -1;
    color: #fee2e2;
    font-size: 0.85rem;
}

/* ========================================
   READING PROGRESS (ARTICLE PAGES)
   ======================================== */

.reading-progress {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    background: transparent;
}

.reading-progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width 0.1s linear;
}

/* ========================================
   BLOG REFINEMENTS
   ======================================== */

/* Cheaper hover: lift and shadow only, no layout-affecting properties */
.blog-post {
    border: 1px solid var(--border-color);
    will-change: transform;
}

.blog-post:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.post-title {
    letter-spacing: -0.01em;
}

.post-section p,
.post-excerpt {
    text-wrap: pretty;
}

/* Long articles: defer offscreen layout work */
.post-section {
    content-visibility: auto;
    contain-intrinsic-size: auto 320px;
}

.blog-posts .container > .blog-grid {
    align-items: start;
}

@media (prefers-reduced-motion: reduce) {
    .blog-post {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .blog-post:hover,
    .related-card:hover,
    .share-btn:hover,
    .newsletter-form button:hover {
        transform: none;
    }

    .reading-progress-bar {
        transition: none;
    }
}

@media (max-width: 768px) {
    .blog-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .blog-search {
        max-width: none;
    }

    .blog-filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 4px;
        scrollbar-width: thin;
    }

    .filter-btn {
        flex: 0 0 auto;
    }
}

/* ========================================
   BLOG DARK THEME
   Single source of truth for both the manual
   toggle and the no-JS system fallback.
   ======================================== */

[data-theme="dark"] .blog-header,
[data-theme="dark"] .post-header {
    background: linear-gradient(135deg, var(--background-white) 0%, var(--background-light) 100%);
}

[data-theme="dark"] .blog-post,
[data-theme="dark"] .sidebar-widget,
[data-theme="dark"] .related-card,
[data-theme="dark"] .search-input,
[data-theme="dark"] .filter-btn {
    background: var(--background-alt);
    border-color: var(--border-color);
}

[data-theme="dark"] .filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

[data-theme="dark"] .post-body,
[data-theme="dark"] .blog-posts {
    background: var(--background-white);
}

[data-theme="dark"] .post-featured-image,
[data-theme="dark"] .related-posts {
    background: var(--background-light);
}

/* Placeholder art is already dark; deepen it so it reads as a distinct surface */
[data-theme="dark"] .post-image-placeholder,
[data-theme="dark"] .featured-image-placeholder,
[data-theme="dark"] .related-placeholder {
    background: linear-gradient(135deg, #0b1020 0%, #141d33 100%);
}

[data-theme="dark"] .post-tags .tag,
[data-theme="dark"] .post-tags-list .tag {
    background: var(--accent-soft);
    color: #93bbfd;
}

[data-theme="dark"] .post-quote {
    background: var(--background-alt);
    border-left-color: var(--primary-light);
}

[data-theme="dark"] .info-box {
    background: var(--accent-soft);
    border-color: rgba(96, 165, 250, 0.28);
}

[data-theme="dark"] .results-table table {
    background: var(--background-alt);
}

[data-theme="dark"] .results-table th {
    background: var(--background-light);
    color: var(--text-dark);
}

[data-theme="dark"] .results-table th,
[data-theme="dark"] .results-table td {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .results-table tr.highlight {
    background: var(--accent-soft);
}

[data-theme="dark"] .results-table tr.highlight td {
    color: #93bbfd;
}

[data-theme="dark"] .code-block {
    background: #0b1020;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .code-header {
    background: #070c18;
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .author-social a {
    background: var(--background-light);
    color: var(--text-medium);
}

[data-theme="dark"] .author-social a:hover {
    background: var(--primary-color);
    color: #fff;
}

[data-theme="dark"] .share-btn.copy {
    background: var(--background-light);
    color: var(--text-medium);
}

[data-theme="dark"] .newsletter {
    background: linear-gradient(135deg, #16305c 0%, #0d1d3d 100%);
}

[data-theme="dark"] .newsletter-form input {
    background: var(--background-alt);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .newsletter-form input::placeholder {
    color: var(--text-light);
}

[data-theme="dark"] .newsletter-form button {
    background: var(--primary-light);
    color: #071021;
}

[data-theme="dark"] .newsletter-form button:hover {
    background: #93bbfd;
}

[data-theme="dark"] .search-clear:hover {
    background: var(--background-light);
}

[data-theme="dark"] .top-nav-link.active {
    background-color: var(--accent-soft);
    color: #93bbfd;
}