/* Blog Styles */

/* Blog List Page */
.blog-header {
  background: var(--gradient-primary);
  color: var(--text-white);
  text-align: center;
  padding: 120px 0 60px;
}

.blog-header h1 {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  margin-bottom: var(--spacing-sm);
}

.blog-header p {
  font-size: var(--fs-lg);
  opacity: 0.9;
}

/* Blog Filters */
.blog-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-2xl);
}

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.blog-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.blog-card a {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.blog-card-body {
  padding: var(--spacing-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-category {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--spacing-md);
  width: fit-content;
}

.category-essay {
  background: rgba(245, 87, 108, 0.1);
  color: #f5576c;
}

.category-tutorial {
  background: rgba(79, 172, 254, 0.1);
  color: #4facfe;
}

.category-dev {
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
}

.category-edtech {
  background: rgba(67, 233, 123, 0.1);
  color: #2cb67d;
}

.category-project {
  background: rgba(118, 75, 162, 0.1);
  color: #764ba2;
}

.blog-card-title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

.blog-card-excerpt {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  flex: 1;
}

.blog-card-meta {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-light);
  padding-top: var(--spacing-md);
}

/* Blog Post Page */
.blog-post {
  max-width: 780px;
  margin: 0 auto;
  padding-bottom: var(--spacing-4xl);
}

.blog-post-header {
  margin-bottom: var(--spacing-2xl);
  text-align: center;
}

.blog-post-header .blog-card-category {
  margin-bottom: var(--spacing-md);
}

.blog-post-header h1 {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

.blog-post-header .blog-card-meta {
  justify-content: center;
  border-top: none;
  padding-top: 0;
}

.blog-post-content {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: var(--fs-lg);
}

.blog-post-content h2 {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border-light);
}

.blog-post-content h3 {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.blog-post-content p {
  margin-bottom: var(--spacing-lg);
}

.blog-post-content ul,
.blog-post-content ol {
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.blog-post-content li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.blog-post-content ul {
  list-style: disc;
}

.blog-post-content ol {
  list-style: decimal;
}

.blog-post-content strong {
  color: var(--text-primary);
  font-weight: var(--fw-semibold);
}

/* Blog Post Images */
.blog-post-content figure {
  margin: var(--spacing-2xl) 0;
}

.blog-post-content figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.blog-post-content figcaption {
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-top: var(--spacing-sm);
  font-style: italic;
}

.blog-image-placeholder {
  width: 100%;
  height: 300px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border-medium);
  position: relative;
}

.blog-image-placeholder::after {
  content: attr(data-label);
  color: var(--text-muted);
  font-size: var(--fs-sm);
  text-align: center;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 767px) {
  .blog-image-placeholder {
    height: 200px;
  }
}

.blog-post-content code {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--primary-soft);
}

.blog-post-content pre {
  background: #1a202c;
  color: #e2e8f0;
  padding: var(--spacing-xl);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.blog-post-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: var(--fs-sm);
  color: inherit;
}

.blog-post-content blockquote {
  border-left: 4px solid var(--primary-soft);
  padding: var(--spacing-md) var(--spacing-xl);
  margin: var(--spacing-lg) 0;
  background: rgba(102, 126, 234, 0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
}

/* Blog Post Navigation */
.blog-post-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--border-light);
}

.blog-post-nav a {
  color: var(--primary-soft);
  font-weight: var(--fw-medium);
  transition: color var(--transition-fast);
}

.blog-post-nav a:hover {
  color: var(--primary-light);
}

/* No posts message */
.blog-empty {
  text-align: center;
  padding: var(--spacing-4xl) 0;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1023px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .blog-header {
    padding: 100px 0 40px;
  }

  .blog-header h1 {
    font-size: var(--fs-3xl);
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-post-header h1 {
    font-size: var(--fs-3xl);
  }

  .blog-post-content {
    font-size: var(--fs-base);
  }

  .blog-post-nav {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}