/**
 * Single Post Styles - SocialBoost Asia
 * Beautiful article typography and layout
 */

/* ========== Fix Sticky TOC - Override parent overflow ========== */
.page-wrapper:has(.single-post-layout) {
    overflow-x: visible;
    overflow-y: visible;
}

.body-wrapper:has(.single-post-layout) {
    overflow: visible;
}

/* ========== Post Layout ========== */
.single-post-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .single-post-layout {
        grid-template-columns: 1fr;
    }
}

/* ========== Post Bottom Sections - Align with content body ========== */
.post-bottom-sections {
    max-width: 1200px;
    margin: 0 auto;
    padding-right: calc(280px + 2.5rem);
}

@media (max-width: 1024px) {
    .post-bottom-sections {
        padding-right: 0;
    }
}

/* ========== Post Header (Centered/Elegant Design) ========== */
.post-header {
    text-align: center;
    margin-bottom: 1.25rem;
    padding-bottom: 0;
}

.post-header-title {
    font-family: inherit;
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 1.25rem;
    color: #1e3a5f;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: -0.5px;
}

/* Category badge inline with meta */
.post-header-category {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.85rem;
    background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%);
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
}

.post-header-category i {
    font-size: 0.7rem;
    color: white;
    opacity: 0.85;
}

.post-header-category:hover {
    background: linear-gradient(135deg, #2c5282 0%, #3182ce 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.3);
}

/* Divider between category and other meta */
.post-meta-divider {
    width: 1px;
    height: 20px;
    background: var(--blog-border, #e2e8f0);
}

.post-header-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--blog-text-secondary, #64748b);
}

.post-header-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.post-header-meta i {
    color: var(--blog-primary, #5d87ff);
    font-size: 0.8rem;
}

.post-header-author-link {
    color: var(--blog-primary, #5d87ff);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

/* Featured Image */
.post-featured-image {
    margin-bottom: 2rem;
    border-radius: var(--blog-radius, 12px);
    overflow: hidden;
    box-shadow: var(--blog-shadow);
}

.post-featured-image img {
    width: 100%;
    height: auto;
    max-height: 450px;
    object-fit: cover;
    display: block;
}


.post-header-author-link:hover {
    color: var(--blog-primary-dark, #4a6fd4);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .post-header-title {
        font-size: 1.875rem;
    }

    .post-header-meta {
        gap: 0.75rem;
        font-size: 0.825rem;
    }

    .post-header-category {
        padding: 0.4rem 1rem;
        font-size: 0.7rem;
    }
}

/* Legacy .post-cover-* classes removed - using .post-header-* instead */

/* ========== Post Content ========== */
.post-main {
    background: var(--blog-card-bg);
    border-radius: var(--blog-radius);
    padding: 1.5rem 2.5rem 2.5rem 2.5rem;
    box-shadow: var(--blog-shadow);
}

/* Article Typography */
.post-content {
    font-family: var(--blog-font);
    font-size: 1.1rem;
    line-height: 1.85;
    color: var(--blog-text);
}

.post-content h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 2.5rem 0 1.25rem;
    color: var(--blog-text);
    line-height: 1.3;
}

.post-content h2 {
    font-size: 1.625rem;
    font-weight: 600;
    margin: 2.5rem 0 1rem;
    color: var(--blog-text);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--blog-primary);
    line-height: 1.4;
}

.post-content h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin: 2rem 0 0.875rem;
    color: var(--blog-text);
    line-height: 1.4;
}

.post-content h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 1.75rem 0 0.75rem;
    color: var(--blog-text);
}

.post-content p {
    margin-bottom: 1.5rem;
}

.post-content a {
    color: var(--blog-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.3s ease;
}

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

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

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

/* Lists */
.post-content ul,
.post-content ol {
    margin: 1.5rem 0;
    padding-left: 1.5rem;
}

.post-content li {
    margin-bottom: 0.5rem;
    padding-left: 0.5rem;
}

.post-content ul li::marker {
    color: var(--blog-primary);
}

.post-content ol li::marker {
    color: var(--blog-primary);
    font-weight: 600;
}

/* Blockquote */
.post-content blockquote {
    margin: 2rem 0;
    padding: 1.5rem 1.5rem 1.5rem 2rem;
    background: linear-gradient(135deg, rgba(93, 135, 255, 0.08), rgba(118, 75, 162, 0.08));
    border-left: 4px solid var(--blog-primary);
    border-radius: 0 var(--blog-radius-sm) var(--blog-radius-sm) 0;
    font-style: italic;
    color: var(--blog-text-secondary);
}

.post-content blockquote p:last-child {
    margin-bottom: 0;
}

/* Code Blocks */
.post-content code {
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 0.9em;
    padding: 0.2rem 0.4rem;
    background: var(--blog-bg);
    border-radius: 4px;
    color: var(--blog-primary);
}

.post-content pre {
    margin: 2rem 0;
    padding: 1.5rem;
    background: #1e293b;
    border-radius: var(--blog-radius-sm);
    overflow-x: auto;
}

.post-content pre code {
    background: none;
    padding: 0;
    color: #e2e8f0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Images */
.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--blog-radius-sm);
    margin: 1.5rem 0;
    box-shadow: var(--blog-shadow);
}

.post-content figure {
    margin: 2rem 0;
}

.post-content figcaption {
    text-align: center;
    font-size: 0.9rem;
    color: var(--blog-text-muted);
    margin-top: 0.75rem;
}

/* Table */
.post-content table {
    width: 100%;
    margin: 2rem 0;
    border-collapse: collapse;
    border-radius: var(--blog-radius-sm);
    overflow: hidden;
}

.post-content th,
.post-content td {
    padding: 0.875rem 1rem;
    text-align: left;
    border: 1px solid var(--blog-border);
}

.post-content th {
    background: var(--blog-primary);
    color: white;
    font-weight: 600;
}

.post-content tr:nth-child(even) {
    background: var(--blog-bg);
}

/* Horizontal Rule */
.post-content hr {
    margin: 3rem 0;
    border: none;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--blog-border), transparent);
}

/* ========== Table of Contents - Always Visible ========== */
.post-toc {
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    align-self: start;
}

/* Fix sticky trong grid layout */
.single-post-layout {
    align-items: start;
}

.toc-container {
    background: var(--blog-card-bg);
    border-radius: var(--blog-radius);
    box-shadow: var(--blog-shadow);
    overflow: hidden;
}

.toc-title {
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin: 0;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.toc-title i {
    color: white;
    font-size: 1.1rem;
}

.toc-list {
    list-style: none;
    padding: 0.75rem 0;
    margin: 0;
}

.toc-list li {
    margin: 0;
}

.toc-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 1.25rem;
    color: var(--blog-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
    position: relative;
}

.toc-list a::after {
    content: '›';
    font-size: 1.1rem;
    color: var(--blog-text-muted);
    transition: transform 0.2s ease;
}

.toc-list a:hover {
    background: rgba(93, 135, 255, 0.06);
    color: var(--blog-primary);
    border-left-color: var(--blog-primary);
}

.toc-list a:hover::after {
    transform: translateX(3px);
    color: var(--blog-primary);
}

.toc-list a.active {
    background: rgba(93, 135, 255, 0.1);
    color: #1e3a5f;
    border-left-color: #1e3a5f;
    font-weight: 600;
}

.toc-list a.active::after {
    color: #1e3a5f;
}

/* Sub-items (H3) - simpler styling without bullets */
.toc-list .toc-h3 {
    padding-left: 2rem;
    font-size: 0.8rem;
    opacity: 0.9;
}

.toc-list .toc-h3::after {
    content: none;
}

.toc-list .toc-h3:hover {
    opacity: 1;
}

.toc-list .toc-h3.active {
    opacity: 1;
}

/* ========== Author Box ========== */
.author-box {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(93, 135, 255, 0.05), rgba(118, 75, 162, 0.05));
    border-radius: var(--blog-radius);
    margin-top: 3rem;
}

.author-avatar {
    flex-shrink: 0;
}

.author-avatar img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--blog-card-bg);
    box-shadow: var(--blog-shadow);
}

.author-info {
    flex: 1;
}

.author-label {
    font-size: 0.75rem;
    color: var(--blog-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.25rem;
}

.author-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--blog-text);
    margin-bottom: 0.5rem;
}

.author-name a {
    color: inherit;
    text-decoration: none;
}

.author-name a:hover {
    color: var(--blog-primary);
}

.author-bio {
    font-size: 0.9rem;
    color: var(--blog-text-secondary);
    line-height: 1.6;
}

@media (max-width: 640px) {
    .author-box {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }

    .author-avatar img {
        width: 80px;
        height: 80px;
    }
}

/* ========== Minimal Share Icon ========== */
.share-section-minimal {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--blog-border);
    position: relative;
}

.share-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #5d87ff 0%, #7c3aed 100%);
    color: white;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.share-icon-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(93, 135, 255, 0.4);
}

.share-icon-btn:active {
    transform: scale(0.95);
}

.share-tooltip {
    position: absolute;
    right: 55px;
    background: #22c55e;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.share-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: #22c55e;
}

.share-section-minimal.copied .share-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.share-section-minimal.copied .share-icon-btn {
    background: #22c55e;
}

/* ========== Related Posts ========== */
.related-posts {
    margin-top: 3rem;
    padding: 0;
}

.related-posts-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--blog-text);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.related-posts-title i {
    color: var(--blog-primary);
}

/* ========== Related Posts - 5 per row ========== */
.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
}

.related-posts-grid .post-card {
    display: flex;
    flex-direction: column;
    grid-template-columns: unset;
    min-height: unset;
}

.related-posts-grid .post-card-thumbnail {
    padding-top: 60%;
    min-height: unset;
    position: relative;
}

.related-posts-grid .post-card-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-posts-grid .post-card-body {
    padding: 1rem;
}

.related-posts-grid .post-card-title {
    font-size: 0.9rem;
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

.related-posts-grid .post-card-meta {
    font-size: 0.75rem;
    border-top: none;
    padding-top: 0.5rem;
}

@media (max-width: 1200px) {
    .related-posts-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .related-posts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

@media (max-width: 480px) {
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== Category/Author Posts Sections ========== */
.posts-section {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--blog-card-bg);
    border-radius: var(--blog-radius);
    box-shadow: var(--blog-shadow);
}

.posts-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.posts-section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--blog-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.posts-section-title i {
    color: var(--blog-primary);
}

.posts-section .view-more-link {
    margin-top: 0;
}

/* ========== Breadcrumb ========== */
.post-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--blog-text-secondary);
    margin-bottom: 1.5rem;
}

.post-breadcrumb a {
    color: var(--blog-text-secondary);
    text-decoration: none;
}

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

.post-breadcrumb span.separator {
    color: var(--blog-text-muted);
}

.post-breadcrumb span.current {
    color: var(--blog-text);
    font-weight: 500;
}

/* ========== Post Navigation ========== */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--blog-border);
}

.post-nav-item {
    display: flex;
    flex-direction: column;
    padding: 1.25rem;
    background: var(--blog-bg);
    border-radius: var(--blog-radius-sm);
    text-decoration: none;
    transition: all 0.3s ease;
}

.post-nav-item:hover {
    background: rgba(93, 135, 255, 0.1);
    transform: translateY(-2px);
}

.post-nav-item.next {
    text-align: right;
}

.post-nav-label {
    font-size: 0.75rem;
    color: var(--blog-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

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

@media (max-width: 640px) {
    .post-navigation {
        grid-template-columns: 1fr;
    }

    .post-nav-item.next {
        text-align: left;
    }
}

/* ========== Reading Progress Bar ========== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--blog-gradient);
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ========== Mobile Responsive ========== */
@media (max-width: 768px) {
    .post-main {
        padding: 1.5rem;
    }

    .post-content {
        font-size: 1rem;
    }

    .post-content h1 {
        font-size: 1.625rem;
    }

    .post-content h2 {
        font-size: 1.375rem;
    }

    .post-content h3 {
        font-size: 1.15rem;
    }

    /* Hide desktop TOC on mobile - use FAB instead */
    .post-toc {
        display: none;
    }
}

/* ========== Mobile TOC FAB & Drawer ========== */
.toc-fab {
    display: none;
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--blog-gradient, linear-gradient(135deg, #5d87ff, #764ba2));
    color: white;
    border: none;
    box-shadow: 0 4px 20px rgba(93, 135, 255, 0.4);
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
    align-items: center;
    justify-content: center;
}

.toc-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(93, 135, 255, 0.5);
}

.toc-fab i {
    font-size: 1.5rem;
}

@media (max-width: 1024px) {
    .toc-fab {
        display: flex;
    }
}

/* Mobile TOC Drawer */
.toc-drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.toc-drawer-overlay.active {
    opacity: 1;
    visibility: visible;
}

.toc-drawer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 70vh;
    background: var(--blog-card-bg, #fff);
    border-radius: 24px 24px 0 0;
    z-index: 1002;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.15);
}

.toc-drawer.active {
    transform: translateY(0);
}

.toc-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--blog-border, #e5e7eb);
}

.toc-drawer-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--blog-text, #1a202c);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toc-drawer-title i {
    color: var(--blog-primary, #5d87ff);
}

.toc-drawer-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--blog-bg, #f8fafc);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blog-text-secondary, #64748b);
    transition: all 0.2s ease;
}

.toc-drawer-close:hover {
    background: var(--blog-border, #e5e7eb);
    color: var(--blog-text, #1a202c);
}

.toc-drawer-body {
    padding: 1rem 1.5rem 2rem;
    overflow-y: auto;
    max-height: calc(70vh - 60px);
}

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

.toc-drawer-body .toc-list li {
    margin-bottom: 0.25rem;
}

.toc-drawer-body .toc-list a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--blog-text-secondary, #64748b);
    text-decoration: none;
    font-size: 0.95rem;
    border-radius: 8px;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.toc-drawer-body .toc-list a:hover,
.toc-drawer-body .toc-list a.active {
    background: rgba(93, 135, 255, 0.1);
    color: var(--blog-primary, #5d87ff);
    border-left-color: var(--blog-primary, #5d87ff);
}

.toc-drawer-body .toc-list .toc-h3 {
    padding-left: 2rem;
    font-size: 0.875rem;
}

/* ========== Mobile Responsive Styles ========== */
@media (max-width: 768px) {

    /* Breadcrumb: left-aligned, compact, max 2 lines */
    .post-breadcrumb {
        justify-content: flex-start;
        gap: 0.25rem;
        font-size: 0.8rem;
        max-height: 3.2em;
        overflow: hidden;
        line-height: 1.6;
        text-overflow: ellipsis;
    }

    .post-breadcrumb a,
    .post-breadcrumb span {
        white-space: nowrap;
    }

    .post-breadcrumb span.current {
        white-space: normal;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        line-clamp: 1;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* H1: smaller, lighter, left-aligned */
    .post-header {
        text-align: left;
    }

    .post-header-title {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 1rem;
        line-height: 1.35;
        letter-spacing: -0.25px;
    }

    /* Meta row: left-aligned on mobile */
    .post-header-meta {
        justify-content: flex-start;
        gap: 0.6rem;
        flex-wrap: wrap;
        font-size: 0.8rem;
    }

    .post-meta-divider {
        height: 16px;
    }

    /* TOC FAB: higher position to avoid top-btn overlap */
    .toc-fab {
        bottom: 90px;
        right: 20px;
        width: 52px;
        height: 52px;
        transition: bottom 0.15s ease-out, transform 0.3s ease, box-shadow 0.3s ease;
    }

    .toc-fab.is-dragging {
        transition: none;
        transform: scale(1.05);
        box-shadow: 0 8px 30px rgba(93, 135, 255, 0.5);
    }

    .toc-fab i {
        font-size: 1.3rem;
    }

    /* Featured image smaller on mobile */
    .post-featured-image img {
        max-height: 280px;
    }
}

@media (max-width: 480px) {
    .post-header-title {
        font-size: 1.35rem;
        font-weight: 600;
    }

    .post-header-meta {
        font-size: 0.75rem;
        gap: 0.5rem;
    }

    .post-header-category {
        padding: 0.25rem 0.6rem;
        font-size: 0.7rem;
    }

    .post-breadcrumb {
        font-size: 0.75rem;
    }
}

/* ========== Post Tags Section ========== */
.post-tags-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--blog-border);
}

.post-tags-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--blog-text);
    margin-bottom: 0.75rem;
}

.post-tags-label i {
    color: var(--blog-primary);
}

.post-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.post-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.85rem;
    background: var(--blog-bg);
    border: 1px solid var(--blog-border);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--blog-text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.post-tag:hover {
    background: var(--blog-primary);
    border-color: var(--blog-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(93, 135, 255, 0.3);
}

.post-tag i {
    margin-right: 0.3rem;
    font-size: 0.7rem;
}

/* ========== Author Bio Toggle ========== */
.author-bio-wrapper {
    position: relative;
}

.author-bio-wrapper.collapsible .author-bio {
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

.author-bio-wrapper.collapsible .author-bio.collapsed {
    max-height: 80px;
    overflow: hidden;
    position: relative;
}

.author-bio-wrapper.collapsible .author-bio.collapsed::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: linear-gradient(to bottom, transparent 0%, rgba(93, 135, 255, 0.02) 40%, var(--blog-card-bg, #fff) 100%);
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.author-bio-wrapper.collapsible .author-bio.expanded {
    max-height: 2000px;
}

.author-bio-wrapper.collapsible .author-bio.expanded::after {
    opacity: 0;
    display: none;
}

.bio-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    padding: 8px 20px;
    background: #fff;
    border: 1px solid rgba(93, 135, 255, 0.25);
    border-radius: 30px;
    color: var(--blog-primary, #5d87ff);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.bio-toggle-btn:hover {
    background: var(--blog-primary, #5d87ff);
    color: #fff;
    border-color: var(--blog-primary, #5d87ff);
    box-shadow: 0 4px 15px rgba(93, 135, 255, 0.3);
    transform: translateY(-2px);
}

.bio-toggle-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(93, 135, 255, 0.2);
}

.bio-toggle-btn i {
    font-size: 0.75rem;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.bio-toggle-btn.expanded i {
    transform: rotate(180deg);
}

/* Responsive cho author bio toggle */
@media (max-width: 640px) {
    .bio-toggle-btn {
        padding: 7px 16px;
        font-size: 0.8rem;
    }
}