/* Blog Module - Core Styles
   Modern tech blog design — works in both light and dark modes */

/* =============================================
   Layout
   ============================================= */

.blog-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}

.blog-header {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color, #e8e8e8);
}

.blog-header h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin: 0 0 0.5rem;
    letter-spacing: -0.02em;
    color: var(--text-color, #111);
}

.blog-subtitle {
    color: var(--text-muted, #666);
    font-size: 1.1rem;
    margin: 0;
    line-height: 1.5;
}

.blog-back-link {
    display: inline-block;
    margin-top: 0.75rem;
    color: var(--link-color, #2563eb);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.blog-back-link:hover {
    color: var(--link-hover, #1d4ed8);
}

/* Layout: Main + Sidebar */
.blog-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    align-items: start;
}

@media (max-width: 900px) {
    .blog-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* =============================================
   Post Cards
   ============================================= */

.blog-card {
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 12px;
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    position: relative;
}

.blog-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--link-color, #2563eb);
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.82rem;
    color: var(--text-muted, #666);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 500;
}

.blog-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 0.75rem;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.blog-card-title a {
    color: var(--text-color, #111);
    text-decoration: none;
    transition: color 0.2s;
}

.blog-card-title a:hover {
    color: var(--link-color, #2563eb);
}

.blog-card-excerpt {
    color: var(--text-muted, #555);
    line-height: 1.7;
    margin: 0 0 1.25rem;
    font-size: 0.95rem;
}

.blog-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color, #f0f0f0);
}

.blog-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.blog-read-more {
    color: var(--link-color, #2563eb);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    transition: color 0.2s;
}

.blog-read-more:hover {
    color: var(--link-hover, #1d4ed8);
}

/* =============================================
   Tags
   ============================================= */

.blog-tag {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    font-size: 0.78rem;
    font-weight: 500;
    background: var(--tag-bg, #f3f4f6);
    color: var(--tag-color, #4b5563);
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
    border: 1px solid transparent;
}

.blog-tag:hover {
    background: var(--link-color, #2563eb);
    color: #fff;
    border-color: var(--link-color, #2563eb);
}

/* =============================================
   Badges
   ============================================= */

.blog-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.72rem;
    border-radius: 6px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-badge-ai {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}

.blog-views {
    font-size: 0.82rem;
    color: var(--text-muted, #999);
}

/* =============================================
   Sidebar
   ============================================= */

.blog-sidebar-section {
    margin-bottom: 2rem;
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 12px;
    padding: 1.25rem;
}

.blog-sidebar-section h3 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color, #e5e7eb);
    color: var(--text-muted, #555);
}

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

.blog-category-list li {
    margin-bottom: 0.15rem;
}

.blog-category-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.6rem;
    color: var(--text-color, #333);
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
    font-size: 0.9rem;
    font-weight: 500;
}

.blog-category-list a:hover,
.blog-category-list a.active {
    background: var(--hover-bg, #f3f4f6);
    color: var(--link-color, #2563eb);
}

.blog-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted, #999);
    background: var(--tag-bg, #f3f4f6);
    padding: 0.15rem 0.55rem;
    border-radius: 10px;
    min-width: 1.4rem;
    text-align: center;
}

.blog-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.blog-rss-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: var(--tag-bg, #f3f4f6);
    color: var(--text-color, #333);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color, #e5e7eb);
    transition: background 0.2s, border-color 0.2s;
}

.blog-rss-link:hover {
    background: var(--hover-bg, #e5e7eb);
    border-color: var(--link-color, #2563eb);
}

/* =============================================
   Pagination
   ============================================= */

.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 2rem 0;
}

.blog-page-link {
    color: var(--link-color, #2563eb);
    text-decoration: none;
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background 0.2s, border-color 0.2s;
}

.blog-page-link:hover {
    background: var(--hover-bg, #f3f4f6);
    border-color: var(--link-color, #2563eb);
}

.blog-page-info {
    color: var(--text-muted, #666);
    font-size: 0.9rem;
}

/* =============================================
   Empty State
   ============================================= */

.blog-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted, #666);
    font-size: 1.1rem;
}

/* =============================================
   Utility
   ============================================= */

.blog-hidden {
    display: none;
}

.blog-honeypot {
    position: absolute;
    left: -9999px;
    top: -9999px;
}

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

[data-theme="dark"] .blog-header {
    border-bottom-color: var(--border-color, #2d2d2d);
}

[data-theme="dark"] .blog-header h1 {
    color: var(--text-color, #f0f0f0);
}

[data-theme="dark"] .blog-card {
    background: var(--card-bg, #1a1a2e);
    border-color: var(--border-color, #2d2d44);
}

[data-theme="dark"] .blog-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: #00d9ff;
}

[data-theme="dark"] .blog-card-title a {
    color: var(--text-color, #f0f0f0);
}

[data-theme="dark"] .blog-card-title a:hover {
    color: #00d9ff;
}

[data-theme="dark"] .blog-card-footer {
    border-top-color: var(--border-color, #2d2d44);
}

[data-theme="dark"] .blog-read-more {
    color: #00d9ff;
}

[data-theme="dark"] .blog-tag {
    background: rgba(0, 217, 255, 0.1);
    color: #7dd3fc;
    border-color: rgba(0, 217, 255, 0.15);
}

[data-theme="dark"] .blog-tag:hover {
    background: #00d9ff;
    color: #0d0d1a;
    border-color: #00d9ff;
}

[data-theme="dark"] .blog-sidebar-section {
    background: var(--card-bg, #1a1a2e);
    border-color: var(--border-color, #2d2d44);
}

[data-theme="dark"] .blog-sidebar-section h3 {
    color: var(--text-muted, #8888aa);
    border-bottom-color: var(--border-color, #2d2d44);
}

[data-theme="dark"] .blog-category-list a {
    color: var(--text-color, #e0e0e0);
}

[data-theme="dark"] .blog-category-list a:hover,
[data-theme="dark"] .blog-category-list a.active {
    background: rgba(0, 217, 255, 0.08);
    color: #00d9ff;
}

[data-theme="dark"] .blog-count {
    background: rgba(0, 217, 255, 0.1);
    color: #7dd3fc;
}

[data-theme="dark"] .blog-rss-link {
    background: rgba(0, 217, 255, 0.08);
    color: var(--text-color, #e0e0e0);
    border-color: var(--border-color, #2d2d44);
}

[data-theme="dark"] .blog-rss-link:hover {
    background: rgba(0, 217, 255, 0.15);
    border-color: #00d9ff;
}

[data-theme="dark"] .blog-page-link {
    color: #00d9ff;
    border-color: var(--border-color, #2d2d44);
}

[data-theme="dark"] .blog-page-link:hover {
    background: rgba(0, 217, 255, 0.08);
    border-color: #00d9ff;
}

[data-theme="dark"] .blog-back-link {
    color: #00d9ff;
}