/* Single Post / Article Page */

/* Article Hero */
.article-hero {
    position: relative;
    min-height: 320px;
    display: flex;
    align-items: flex-end;
    padding: 100px 0 48px;
    background: linear-gradient(135deg, rgba(21, 42, 99, 0.92), rgba(30, 59, 139, 0.85)),
                var(--article-hero-bg, url('../images/default-news.jpg')) center/cover no-repeat;
    color: #fff;
}

.article-hero .container {
    position: relative;
    z-index: 1;
}

.article-breadcrumb {
    margin-bottom: 16px;
}

.article-breadcrumb ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 0.85rem;
}

.article-breadcrumb li {
    display: flex;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.75);
}

.article-breadcrumb li + li::before {
    content: '/';
    color: rgba(255, 255, 255, 0.4);
    margin-right: 2px;
}

.article-breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-breadcrumb a:hover {
    color: var(--color-accent-gold, #D4B069);
}

.article-breadcrumb li.active {
    color: var(--color-accent-gold, #D4B069);
}

.article-hero-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 20px;
    max-width: 900px;
}

.article-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
}

.article-hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-hero-meta i {
    color: var(--color-accent-gold, #D4B069);
}

.article-hero-meta a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

.article-hero-meta a:hover {
    color: var(--color-accent-gold, #D4B069);
}

/* Content section */
.single-post-content {
    background: var(--color-surface-cream, #FAF7F2);
    padding: 48px 0 80px;
}

.single-post-layout {
    align-items: flex-start;
}

/* Table of Contents */
.post-toc {
    background: #fff;
    border-radius: 12px;
    border: 1px solid rgba(30, 59, 139, 0.08);
    padding: 20px 24px;
    margin-bottom: 28px;
    box-shadow: 0 2px 12px rgba(30, 59, 139, 0.06);
}

.post-toc-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-color, #1E3B8B);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.post-toc-title i {
    color: var(--secondary-color, #D4B069);
}

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

.post-toc-list li {
    margin-bottom: 6px;
}

.post-toc-list li.toc-h3 {
    padding-left: 16px;
}

.post-toc-list a {
    color: #555;
    text-decoration: none;
    font-size: 0.9rem;
    line-height: 1.5;
    display: block;
    padding: 4px 8px;
    border-radius: 6px;
    border-left: 2px solid transparent;
    transition: all 0.2s ease;
}

.post-toc-list a:hover,
.post-toc-list a.active {
    color: var(--primary-color, #1E3B8B);
    background: rgba(30, 59, 139, 0.05);
    border-left-color: var(--secondary-color, #D4B069);
}

.post-toc-toggle {
    display: none;
    width: 100%;
    background: var(--primary-color, #1E3B8B);
    color: #fff;
    border: none;
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0;
    cursor: pointer;
}

.post-toc-toggle i {
    transition: transform 0.3s ease;
}

.post-toc.collapsed .post-toc-toggle i {
    transform: rotate(180deg);
}

.post-toc.collapsed .post-toc-body {
    display: none;
}

/* Article card */
article.single-post {
    background: #fff !important;
    border-radius: 16px !important;
    padding: 36px 40px !important;
    box-shadow: 0 4px 24px rgba(30, 59, 139, 0.08) !important;
    border: 1px solid rgba(30, 59, 139, 0.06) !important;
    margin-bottom: 0 !important;
}

.post-content {
    max-width: 720px;
    font-size: 1.05rem;
    line-height: 1.85;
    color: #444;
}

.post-content h2 {
    color: var(--primary-color, #1E3B8B);
    font-size: 1.45rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-left: 16px;
    border-left: 4px solid var(--secondary-color, #D4B069);
}

.post-content h3 {
    color: var(--primary-color, #1E3B8B);
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

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

.post-content ol li,
.post-content ul li {
    margin-bottom: 0.5rem;
}

.post-content blockquote {
    background: var(--color-surface-cream, #FAF7F2);
    border-left: 4px solid var(--secondary-color, #D4B069);
    padding: 20px 24px;
    margin: 2rem 0;
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: #555;
}

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

/* Article CTA */
.article-cta {
    background: linear-gradient(135deg, var(--primary-color, #1E3B8B), #152a63);
    border-radius: 16px;
    padding: 32px 36px;
    margin: 2.5rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    max-width: 720px;
}

.article-cta-content h4 {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.article-cta-content p {
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
    font-size: 0.95rem;
}

.article-cta-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Share bar */
.post-share {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 0;
    margin-top: 24px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    max-width: 720px;
}

.post-share-label {
    font-weight: 600;
    color: var(--primary-color, #1E3B8B);
    font-size: 0.9rem;
    margin-right: 4px;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: none;
    cursor: pointer;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    color: #fff;
}

.share-btn.facebook { background: #1877f2; }
.share-btn.zalo { background: #0068ff; }
.share-btn.copy { background: #6c757d; }
.share-btn.copy.copied { background: #28a745; }

/* Author box */
.author-box {
    display: flex;
    gap: 20px;
    align-items: center;
    background: var(--color-surface-cream, #FAF7F2);
    border-radius: 12px;
    padding: 24px;
    margin-top: 32px;
    max-width: 720px;
    border: 1px solid rgba(30, 59, 139, 0.06);
}

.author-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--primary-color, #1E3B8B);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    overflow: hidden;
}

.author-avatar img,
.author-avatar .avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.author-info h5 {
    color: var(--primary-color, #1E3B8B);
    font-weight: 700;
    margin-bottom: 4px;
    font-size: 1rem;
}

.author-info p {
    color: #666;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Post navigation v2 */
.post-navigation-v2 {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.post-nav-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--color-surface-cream, #FAF7F2);
    border-radius: 12px;
    padding: 16px;
    text-decoration: none;
    transition: all 0.25s ease;
    border: 1px solid rgba(30, 59, 139, 0.06);
    height: 100%;
}

.post-nav-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(30, 59, 139, 0.1);
    border-color: rgba(30, 59, 139, 0.12);
}

.post-nav-card.next {
    flex-direction: row-reverse;
    text-align: right;
}

.post-nav-thumb {
    width: 72px;
    height: 72px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.post-nav-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-nav-text .nav-label {
    display: block;
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 4px;
}

.post-nav-text .nav-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color, #1E3B8B);
    margin: 0;
    line-height: 1.4;
}

/* Related posts */
.related-posts {
    margin-top: 48px;
    padding-top: 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.related-posts .section-title {
    font-size: 1.5rem;
    text-align: left;
    padding-bottom: 16px;
}

.related-posts .section-title::after {
    left: 0;
    transform: none;
}

/* Sidebar sticky */
.blog-sidebar-sticky {
    position: sticky;
    top: calc(var(--navbar-height, 80px) + 20px);
}

.sidebar-booking-cta {
    background: linear-gradient(135deg, var(--primary-color, #1E3B8B), #152a63);
    border: none;
    border-radius: 12px;
    overflow: hidden;
}

.sidebar-booking-cta .card-body {
    padding: 24px;
}

.sidebar-booking-cta .widget-title {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.sidebar-booking-cta p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.sidebar-booking-cta .btn-tea-gold {
    width: 100%;
}

.sidebar-widget {
    border: 1px solid rgba(30, 59, 139, 0.06);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(30, 59, 139, 0.05);
}

.sidebar-widget .widget-title {
    color: var(--primary-color, #1E3B8B);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-color, #D4B069);
    display: inline-block;
}

/* Responsive */
@media (max-width: 991.98px) {
    .article-hero {
        min-height: 260px;
        padding: 90px 0 36px;
    }

    article.single-post {
        padding: 24px 20px !important;
    }

    .blog-sidebar-sticky {
        position: static;
    }
}

@media (max-width: 767.98px) {
    .post-toc-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
    }

    .post-toc .post-toc-title {
        display: none;
    }

    .post-toc.collapsed .post-toc-body {
        display: none;
    }

    .post-toc:not(.collapsed) .post-toc-body {
        display: block;
        margin-top: 16px;
    }

    .article-cta {
        flex-direction: column;
        text-align: center;
        padding: 24px;
    }

    .article-cta-actions {
        width: 100%;
        justify-content: center;
    }

    .author-box {
        flex-direction: column;
        text-align: center;
    }

    .post-nav-card.next {
        flex-direction: row;
        text-align: left;
        margin-top: 12px;
    }
}