/* Container */
.container-wrapper {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Breadcrumb */
.blog-breadcrumb {
    background: var(--clr-bg);
    padding: 14px 0;
    border-bottom: 1px solid var(--clr-border);
}

.breadcrumb-links {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    flex-wrap: wrap;
}

.breadcrumb-link {
    color: var(--clr-text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition) ease;
}

.breadcrumb-link:hover {
    color: var(--clr-primary);
}

.breadcrumb-separator {
    color: var(--clr-border);
}

.breadcrumb-current {
    color: var(--clr-primary);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 500px;
}

/* Blog Section */
.blog-section, .blog-detail-section {
    background: var(--clr-white);
    min-height: 100vh;
    padding: 40px 0 60px;
}

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--clr-bg);
}

.category-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--clr-primary);
    color: var(--clr-white);
    border-radius: 12px;
    font-size: 24px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--clr-text);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.page-description {
    font-size: 0.938rem;
    color: var(--clr-text-light);
    margin-top: 8px;
}

/* Blog Layout */
.blog-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media (min-width: 1024px) {
    .blog-layout {
        grid-template-columns: 320px 1fr;
        gap: 40px;
    }
}

/* Sidebar */
.blog-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

@media (min-width: 1024px) {
    .sidebar-sticky {
        position: sticky;
        top: 24px;
        display: flex;
        flex-direction: column;
        gap: 24px;
    }
}

.sidebar-widget {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: all var(--transition) ease;
}

.sidebar-widget:hover {
    box-shadow: var(--shadow-hover);
}

.widget-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--clr-primary);
}

.widget-header i {
    font-size: 18px;
    color: var(--clr-primary);
}

.widget-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--clr-text);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* Category List */
.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.category-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--clr-bg);
    border: 1px solid transparent;
    border-radius: 6px;
    color: var(--clr-text);
    font-size: 0.938rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition) ease;
}

.category-link:hover,
.category-link.active {
    background: var(--clr-primary);
    border-color: var(--clr-primary);
    color: var(--clr-white);
}

.category-link:hover .link-text i,
.category-link.active .link-text i {
    transform: translateX(3px);
}

.link-text {
    display: flex;
    align-items: center;
    gap: 8px;
}

.link-text i {
    font-size: 0.875rem;
    transition: transform var(--transition) ease;
}

.post-count {
    font-size: 0.813rem;
    font-weight: 700;
    color: var(--clr-text-light);
    background: var(--clr-white);
    padding: 3px 10px;
    border-radius: 12px;
    min-width: 28px;
    text-align: center;
}

.category-link:hover .post-count,
.category-link.active .post-count {
    background: rgba(255, 255, 255, 0.25);
    color: var(--clr-white);
}

/* Recent Posts Widget */
.recent-posts {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.recent-post-item {
    display: flex;
    gap: 12px;
    text-decoration: none;
    transition: all var(--transition) ease;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid transparent;
}

.recent-post-item:hover {
    background: var(--clr-bg);
    border-color: var(--clr-border);
}

.recent-post-image {
    position: relative;
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
}

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

.recent-post-item:hover .recent-post-image img {
    transform: scale(1.1);
}

.image-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    background: var(--clr-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-white);
    font-size: 0.625rem;
}

.recent-post-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.recent-post-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--clr-text);
    line-height: 1.4;
    margin: 0;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    transition: color var(--transition) ease;
}

.recent-post-item:hover .recent-post-title {
    color: var(--clr-primary);
}

.recent-post-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--clr-text-light);
}

.recent-post-date i {
    font-size: 0.75rem;
    color: var(--clr-primary);
}

/* Post Grid & Cards (blogs.php, blog-by-category.php) */
.blog-main {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.posts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) { .posts-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1280px) { .posts-grid { grid-template-columns: repeat(3, 1fr); } }

.post-card {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition) ease;
    box-shadow: var(--shadow);
}

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

.post-image-wrapper {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--clr-bg);
    display: block;
}

.post-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.post-card:hover .post-image { transform: scale(1.06); }

.image-overlay {
    position: absolute;
    inset: 0;
    background: rgba(var(--clr-primary-rgb), 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition) ease;
}

.post-card:hover .image-overlay { opacity: 1; }

.overlay-icon {
    width: 48px;
    height: 48px;
    background: var(--clr-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-primary);
    font-size: 18px;
}

.post-content { padding: 20px; }
.post-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.813rem;
    color: var(--clr-text-light);
    font-weight: 500;
}
.meta-item i { color: var(--clr-primary); }
.post-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--clr-text);
    margin-bottom: 16px;
    line-height: 1.5;
    height: 3em;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.post-title a { color: var(--clr-text); text-decoration: none; transition: color var(--transition) ease; }
.post-title a:hover { color: var(--clr-primary); }

.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.813rem;
    font-weight: 700;
    color: var(--clr-primary);
    text-decoration: none;
    padding: 6px 14px;
    border: 1.5px solid var(--clr-primary);
    border-radius: 20px;
    transition: all var(--transition) ease;
    background: var(--clr-white);
}

.read-more-btn:hover { background: var(--clr-primary); color: var(--clr-white); }
.read-more-btn i { font-size: 0.75rem; transition: transform var(--transition) ease; }
.read-more-btn:hover i { transform: translateX(4px); }

/* Load More Button */
.load-more-wrapper { text-align: center; padding-top: 20px; }
.load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: var(--clr-primary);
    color: var(--clr-white);
    border: none;
    border-radius: 6px;
    font-size: 0.938rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition) ease;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(var(--clr-primary-rgb), 0.2);
}
.load-more-btn:hover { background: var(--clr-primary-d); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(var(--clr-primary-rgb), 0.3); }

/* Empty State (blog-by-category.php) */
.empty-state {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    padding: 80px 40px;
    text-align: center;
    box-shadow: var(--shadow);
}
.empty-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: var(--clr-bg);
    border: 2px solid var(--clr-border);
    border-radius: 50%;
    margin-bottom: 24px;
}
.empty-icon i { font-size: 2.5rem; color: var(--clr-primary); }
.empty-title { font-size: 1.5rem; font-weight: 700; color: var(--clr-text); margin-bottom: 12px; }
.empty-description { font-size: 1rem; color: var(--clr-text-light); margin-bottom: 32px; line-height: 1.6; }
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    background: var(--clr-primary);
    color: var(--clr-white);
    border: none;
    border-radius: 6px;
    font-size: 0.938rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition) ease;
    box-shadow: 0 4px 12px rgba(var(--clr-primary-rgb), 0.2);
}
.back-btn:hover { background: var(--clr-primary-d); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(var(--clr-primary-rgb), 0.3); }

/* Blog Details Specific (blog-details.php) */
.blog-main-detail { width: 100%; }
.detail-card {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.detail-header { padding: 32px; border-bottom: 1px solid var(--clr-border); background: var(--clr-bg); }
.header-top { margin-bottom: 16px; }
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--clr-primary);
    color: var(--clr-white);
    border-radius: 6px;
    font-size: 0.813rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.detail-title { font-size: 1.875rem; font-weight: 700; color: var(--clr-text); line-height: 1.3; margin-bottom: 16px; }
.detail-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.meta-divider { color: var(--clr-border); font-size: 0.875rem; }

.featured-image-wrapper { width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: var(--clr-bg); position: relative; }
.featured-image { width: 100%; height: 100%; object-fit: cover; display: block; }

.detail-content { padding: 40px 32px; color: #374151; font-size: 1rem; line-height: 1.8; }
.detail-content p { margin-bottom: 20px; }
.detail-content h2, .detail-content h3, .detail-content h4 {
    color: var(--clr-text); font-weight: 700; margin-top: 32px; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 2px solid var(--clr-border);
}
.detail-content h2 { font-size: 1.5rem; border-bottom-color: var(--clr-primary); }
.detail-content img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 24px 0; border: 1px solid var(--clr-border); }
.detail-content blockquote {
    margin: 24px 0; padding: 20px 24px; background: var(--clr-bg); border-left: 4px solid var(--clr-primary); border-radius: 6px; font-style: italic; color: var(--clr-text-light);
}

.detail-tags { display: flex; align-items: center; gap: 16px; padding: 24px 32px; border-top: 1px solid var(--clr-border); border-bottom: 1px solid var(--clr-border); flex-wrap: wrap; }
.tags-label { display: flex; align-items: center; gap: 8px; font-size: 0.938rem; font-weight: 600; color: var(--clr-text); }
.tags-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-item { padding: 6px 14px; background: var(--clr-bg); color: var(--clr-text-light); border: 1px solid var(--clr-border); border-radius: 6px; font-size: 0.813rem; font-weight: 500; text-decoration: none; transition: all 0.2s ease; }
.tag-item:hover { background: var(--clr-primary); color: var(--clr-white); border-color: var(--clr-primary); }

.detail-share { padding: 24px 32px; background: var(--clr-bg); }
.share-title { display: flex; align-items: center; gap: 10px; font-size: 1rem; font-weight: 700; color: var(--clr-text); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.3px; }
.share-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; color: var(--clr-white); border-radius: 6px; transition: all 0.3s ease; text-decoration: none; font-size: 1rem; }
.share-btn:hover { transform: translateY(-3px); box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2); }
.share-facebook { background: #1877f2; }
.share-twitter { background: #1da1f2; }
.share-linkedin { background: #0077b5; }
.share-zalo { background: #0180c7; }

.back-button-wrapper { margin-top: 24px; }
.back-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--clr-white);
    color: var(--clr-primary);
    border: 1.5px solid var(--clr-primary);
    border-radius: 6px;
    font-size: 0.938rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}
.back-button:hover { background: var(--clr-primary); color: var(--clr-white); }

/* Responsive Common */
@media (max-width: 1023px) {
    .blog-layout { grid-template-columns: 1fr; }
    .blog-sidebar { order: 2; }
    .blog-main, .blog-main-detail { order: 1; }
}
@media (max-width: 767px) {
    .blog-section, .blog-detail-section { padding: 30px 0 50px; }
    .page-title { font-size: 1.5rem; }
}
@media (max-width: 639px) {
    .posts-grid { grid-template-columns: 1fr; }
}