/* ============================================================
   Huapont — Blog Detail Styles
   ------------------------------------------------------------
   Styling cho trang blog detail: breadcrumb banner, sidebar,
   article content, related posts.
   
   Design: đồng bộ với theme hiện tại - tối giản, chuyên nghiệp,
   nhiều khoảng trắng, typography serif cho heading.
   ============================================================ */

/* ============================================================
   Breadcrumb Banner (Hero)
   ============================================================ */

.blog-breadcrumb-banner {
    position: relative;
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-breadcrumb-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 11, 11, 0.65);
    z-index: 1;
}

.blog-breadcrumb-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 24px;
}

.blog-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    font-family: var(--font-sans);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.blog-breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

.blog-breadcrumb a:hover {
    color: var(--color-gold-300);
}

.blog-breadcrumb-separator {
    color: rgba(255, 255, 255, 0.5);
    user-select: none;
}

.blog-breadcrumb-current {
    color: #ffffff;
    font-weight: 500;
}

/* ============================================================
   Blog Container
   ============================================================ */

.blog-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 40px 32px 100px;
}

.blog-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
}

/* ============================================================
   Blog Sidebar (Left)
   ============================================================ */

.blog-sidebar {
    position: sticky;
    top: 100px;
}

.blog-menu-widget {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 20px;
    margin-bottom: 28px;
}

.blog-menu-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-divider);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.blog-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-menu-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.blog-menu-item:last-child {
    border-bottom: none;
}

.blog-menu-link {
    display: block;
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--color-text-muted);
    padding: 10px 0;
    text-decoration: none;
    transition: all var(--duration-fast) var(--ease-out);
}

.blog-menu-link:hover,
.blog-menu-link.is-active {
    color: var(--color-accent);
    padding-left: 6px;
}

.blog-menu-link.is-active {
    font-weight: 600;
}

/* Sidebar promotional image */
.blog-sidebar-image {
    width: 100%;
    aspect-ratio: 4 / 5;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 28px;
}

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

/* ============================================================
   Blog Article Content (Right)
   ============================================================ */

.blog-article {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 36px 40px;
}

/* Article meta */
.blog-article-date {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-accent);
    margin-bottom: 12px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.blog-article-date svg {
    width: 16px;
    height: 16px;
}

/* Article title */
.blog-article-title {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
    margin: 0 0 20px;
}

/* Featured image */
.blog-featured-image {
    width: 100%;
    height: 520px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 36px;
}

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

/* Article body */
.blog-article-body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    color: #4a4a4a;
}

.blog-article-body p {
    margin: 0 0 18px;
}

.blog-article-body h2 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text);
    margin: 36px 0 16px;
    line-height: 1.3;
}

.blog-article-body h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    margin: 28px 0 14px;
    line-height: 1.3;
}

.blog-article-body ul,
.blog-article-body ol {
    margin: 0 0 18px;
    padding-left: 24px;
}

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

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

.blog-article-body img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: 28px 0;
}

.blog-article-body figcaption {
    font-size: 13px;
    color: var(--color-text-subtle);
    text-align: center;
    margin-top: 8px;
    font-style: italic;
}

.blog-article-body blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: 20px;
    margin: 24px 0;
    color: var(--color-text-muted);
    font-style: italic;
}

/* Article tags/meta */
.blog-article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--color-divider);
}

.blog-article-tags {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.blog-article-tag-label {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-subtle);
}

.blog-article-tag {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-muted);
    background: var(--color-bg-soft);
    padding: 4px 12px;
    border-radius: 12px;
    text-decoration: none;
    transition: all var(--duration-fast) var(--ease-out);
}

.blog-article-tag:hover {
    background: var(--color-accent-soft);
    color: var(--color-accent-hover);
}

/* Author info */
.blog-article-author {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 32px;
    padding: 20px;
    background: var(--color-bg-soft);
    border-radius: var(--radius-sm);
}

.blog-author-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-accent);
}

.blog-author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    margin: 0;
}

.blog-author-info {
    flex: 1;
}

.blog-author-name {
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 4px;
}

.blog-author-bio {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.5;
}

/* ============================================================
   Related Posts Section
   ============================================================ */

.blog-related {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid var(--color-border);
}

.blog-related-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 32px;
    text-align: center;
}

.blog-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.blog-related-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all var(--duration-base) var(--ease-out);
}

.blog-related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.blog-related-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-ink-100);
}

.blog-related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-out);
}

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

.blog-related-content {
    padding: 20px;
}

.blog-related-date {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.blog-related-title-text {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-text);
    margin: 0 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-related-card:hover .blog-related-title-text {
    color: var(--color-accent);
}

.blog-related-link {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--duration-fast) var(--ease-out);
}

.blog-related-card:hover .blog-related-link {
    color: var(--color-accent);
    gap: 10px;
}

/* ============================================================
   Dark Theme Overrides
   ============================================================ */

:root[data-theme="dark"] .blog-breadcrumb-banner::before {
    background: rgba(11, 11, 11, 0.75);
}

:root[data-theme="dark"] .blog-menu-widget {
    background: var(--color-ink-800);
    border-color: var(--color-ink-700);
}

:root[data-theme="dark"] .blog-menu-title {
    border-color: var(--color-ink-700);
}

:root[data-theme="dark"] .blog-menu-item {
    border-color: rgba(255, 255, 255, 0.05);
}

:root[data-theme="dark"] .blog-article {
    background: var(--color-ink-800);
}

:root[data-theme="dark"] .blog-article-meta {
    border-color: var(--color-ink-700);
}

:root[data-theme="dark"] .blog-article-tag {
    background: var(--color-ink-700);
}

:root[data-theme="dark"] .blog-article-tag:hover {
    background: rgba(201, 169, 97, 0.15);
}

:root[data-theme="dark"] .blog-article-author {
    background: var(--color-ink-900);
}

:root[data-theme="dark"] .blog-author-avatar {
    background: rgba(201, 169, 97, 0.15);
}

:root[data-theme="dark"] .blog-related {
    border-color: var(--color-ink-700);
}

:root[data-theme="dark"] .blog-related-card {
    background: var(--color-ink-800);
    border-color: var(--color-ink-700);
}

:root[data-theme="dark"] .blog-related-card:hover {
    box-shadow: var(--shadow-lg);
}

:root[data-theme="dark"] .blog-related-image {
    background: var(--color-ink-700);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 992px) {
    .blog-layout {
        grid-template-columns: 220px minmax(0, 1fr);
        gap: 24px;
    }

    .blog-article {
        padding: 28px 32px;
    }

    .blog-article-title {
        font-size: 28px;
    }

    .blog-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .blog-breadcrumb-banner {
        height: 160px;
    }

    .blog-breadcrumb {
        font-size: 13px;
        gap: 8px;
    }

    .blog-container {
        padding: 32px 20px 60px;
    }

    .blog-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .blog-sidebar {
        position: static;
        order: -1;
    }

    .blog-menu-widget {
        margin-bottom: 20px;
    }

    .blog-sidebar-image {
        display: none;
    }

    .blog-article {
        padding: 24px 20px;
    }

    .blog-article-title {
        font-size: 24px;
    }

    .blog-featured-image {
        height: 280px;
        margin-bottom: 28px;
    }

    .blog-article-body {
        font-size: 15px;
    }

    .blog-article-body h2 {
        font-size: 22px;
        margin: 28px 0 14px;
    }

    .blog-article-body h3 {
        font-size: 18px;
        margin: 24px 0 12px;
    }

    .blog-related {
        margin-top: 60px;
        padding-top: 40px;
    }

    .blog-related-title {
        font-size: 24px;
        margin-bottom: 24px;
    }

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

@media (max-width: 480px) {
    .blog-breadcrumb-banner {
        height: 140px;
    }

    .blog-article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

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