/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #6F4E37;
  --primary-dark: #3E2723;
  --text-color: #1a1a1a;
  --text-light: #666;
  --border-color: #e0e0e0;
  --bg-light: #f8f8f8;
  --white: #ffffff;
  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background: var(--white);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Blog Header */
.blog-header {
  background: var(--white);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.blog-header-minimal {
  padding: var(--spacing-md) 0;
}

.blog-header-nav {
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
}

.blog-header-nav a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.blog-header-nav a:hover {
  color: var(--primary-dark);
}

.nav-separator {
  margin: 0 var(--spacing-xs);
  color: var(--text-light);
}

.home-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.home-link:hover {
  color: var(--primary-dark);
}

.back-link {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--primary-dark);
}

.blog-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text-color);
}

.blog-subtitle {
  font-size: 1.125rem;
  color: var(--text-light);
  font-weight: 400;
}

/* Breadcrumb */
.breadcrumb {
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
}

.breadcrumb a {
  color: var(--primary-color);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb-separator {
  margin: 0 var(--spacing-xs);
  color: var(--text-light);
}

.breadcrumb-current {
  color: var(--text-light);
}

/* Main Layout */
.blog-main {
  padding: var(--spacing-xl) 0;
  min-height: 60vh;
}

.blog-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--spacing-xl);
}

.blog-content {
  min-width: 0;
}

/* Posts Grid */
.posts-grid {
  display: grid;
  gap: var(--spacing-xl);
}

.post-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}

.post-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.post-image-link {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-light);
}

.post-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.post-card:hover .post-image {
  transform: scale(1.05);
}

.post-card-content {
  padding: var(--spacing-lg);
}

.post-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.post-reading-time::before {
  content: '•';
  margin-right: var(--spacing-xs);
}

.post-card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}

.post-card-title a {
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.2s;
}

.post-card-title a:hover {
  color: var(--primary-color);
}

.post-excerpt {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

/* Tags */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--bg-light);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 16px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}

.tag:hover {
  background: var(--primary-color);
  color: var(--white);
}

.tag-active {
  background: var(--primary-color);
  color: var(--white);
}

/* Sidebar */
.blog-sidebar {
  position: sticky;
  top: var(--spacing-lg);
  height: fit-content;
}

.sidebar-section {
  background: var(--bg-light);
  padding: var(--spacing-lg);
  border-radius: 8px;
  margin-bottom: var(--spacing-md);
}

.sidebar-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.sidebar-empty {
  color: var(--text-light);
  font-size: 0.875rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag-cloud-item {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  background: var(--white);
  color: var(--text-color);
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.875rem;
  transition: background 0.2s, color 0.2s;
  border: 1px solid var(--border-color);
}

.tag-cloud-item:hover,
.tag-cloud-item-active {
  background: var(--primary-color);
  color: var(--white);
  border-color: var(--primary-color);
}

.tag-count {
  color: var(--text-light);
  font-size: 0.8rem;
}

.tag-cloud-item:hover .tag-count,
.tag-cloud-item-active .tag-count {
  color: rgba(255, 255, 255, 0.8);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
}

.pagination-btn {
  padding: 0.75rem 1.5rem;
  background: var(--primary-color);
  color: var(--white);
  text-decoration: none;
  border-radius: 4px;
  font-weight: 500;
  transition: background 0.2s;
}

.pagination-btn:hover {
  background: var(--primary-dark);
}

.pagination-btn-disabled {
  background: var(--bg-light);
  color: var(--text-light);
  cursor: not-allowed;
}

.pagination-info {
  color: var(--text-light);
  font-size: 0.875rem;
}

/* No Posts */
.no-posts {
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-md);
  color: var(--text-light);
}

.btn-link {
  display: inline-block;
  margin-top: var(--spacing-md);
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.btn-link:hover {
  text-decoration: underline;
}

/* Post Detail */
.post-detail {
  background: var(--white);
}

.post-header-image {
  width: 100%;
  max-height: 500px;
  overflow: hidden;
  background: var(--bg-light);
}

.post-header-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-detail-container {
  max-width: 800px;
  margin: 0 auto;
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-xxl);
}

.post-detail-header {
  margin-bottom: var(--spacing-xl);
}

.post-detail-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.post-detail-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

.post-author {
  font-weight: 500;
  color: var(--text-color);
}

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

.post-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

/* Social Share */
.social-share {
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
}

.social-share h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.share-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background: var(--bg-light);
  color: var(--text-color);
  text-decoration: none;
  border-radius: 4px;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}

.share-btn:hover {
  background: var(--primary-color);
  color: var(--white);
}

.share-twitter:hover {
  background: #1DA1F2;
}

.share-facebook:hover {
  background: #1877F2;
}

.share-linkedin:hover {
  background: #0A66C2;
}

/* Related Posts */
.related-posts {
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
}

.related-posts-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.related-post-card {
  background: var(--bg-light);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s;
}

.related-post-card:hover {
  transform: translateY(-2px);
}

.related-post-image-link {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--border-color);
}

.related-post-image-link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

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

.related-post-content {
  padding: var(--spacing-md);
}

.related-post-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.related-post-title a {
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.2s;
}

.related-post-title a:hover {
  color: var(--primary-color);
}

.related-post-excerpt {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* Footer */
.blog-footer {
  background: var(--bg-light);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0;
  text-align: center;
  color: var(--text-light);
  font-size: 0.875rem;
}

.blog-footer .footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.blog-footer .footer-nav a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.blog-footer .footer-nav a:hover {
  color: var(--primary-dark);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .blog-layout {
    grid-template-columns: 1fr 250px;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .blog-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .blog-sidebar {
    position: static;
  }

  .blog-title {
    font-size: 2rem;
  }

  .post-detail-title {
    font-size: 2rem;
  }

  .post-card-title {
    font-size: 1.25rem;
  }

  .related-posts-grid {
    grid-template-columns: 1fr;
  }

  .share-buttons {
    flex-direction: column;
  }

  .share-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 375px) {
  :root {
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
  }

  .blog-title {
    font-size: 1.75rem;
  }

  .post-detail-title {
    font-size: 1.75rem;
  }

  .post-meta {
    flex-direction: column;
    gap: 0.25rem;
  }

  .post-reading-time::before {
    content: '';
    margin-right: 0;
  }
}