/* ═══════════════════════════════════════════════════
   BLOG SYSTEM — Articles List and Single Article
   ═══════════════════════════════════════════════════ */

/* ── Blog Header & Search ── */
.blog-header {
  padding: calc(var(--header-height) + var(--space-4xl)) var(--space-xl) var(--space-2xl);
  text-align: center;
  position: relative;
}

.blog-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.blog-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.blog-search-form {
  max-width: 500px;
  margin: 0 auto;
  position: relative;
}

.blog-search-input {
  width: 100%;
  padding: 1rem 3rem 1rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-family: var(--font-ar);
  font-size: 1rem;
  transition: var(--transition);
}

.blog-search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.blog-search-icon {
  position: absolute;
  top: 50%;
  right: 1.2rem;
  transform: translateY(-50%);
  color: var(--text-muted);
}

/* ── Categories ── */
.blog-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: var(--space-xl) 0 var(--space-3xl);
}

.category-pill {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.category-pill:hover,
.category-pill.active {
  background: var(--primary-subtle);
  color: var(--primary-light);
  border-color: var(--primary);
}

/* ── Featured Article ── */
.featured-article {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-3xl);
  transition: var(--transition);
}

.featured-article:hover {
  border-color: var(--primary-subtle);
  transform: translateY(-5px);
}

.featured-img-wrapper {
  position: relative;
  overflow: hidden;
}

.featured-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.featured-article:hover .featured-img {
  transform: scale(1.05);
}

.featured-content {
  padding: var(--space-2xl) var(--space-2xl) var(--space-2xl) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-meta {
  display: flex;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.featured-title {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.featured-summary {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* ── Articles Grid ── */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-subtle);
}

.article-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.article-card-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-meta {
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.article-card-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.article-card-summary {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex: 1;
}

.article-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--glass-border);
  padding-top: 1rem;
}

.read-more {
  color: var(--primary-light);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.read-more:hover {
  color: var(--text-primary);
  gap: 0.75rem;
}

/* ── Single Article Page ── */
.article-header {
  padding: calc(var(--header-height) + var(--space-3xl)) var(--space-xl) var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.article-main-title {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

.article-tags {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tag {
  background: var(--bg-hover);
  color: var(--text-secondary);
  padding: 0.2rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.article-cover {
  max-width: 1000px;
  margin: 0 auto var(--space-3xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.article-cover img {
  width: 100%;
  height: auto;
  display: block;
}

/* Article Body & Reading Exp */
.article-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl) var(--space-4xl);
  display: grid;
  grid-template-columns: 250px 1fr 50px;
  gap: var(--space-2xl);
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 100px;
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
}

.article-toc h4 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.article-toc ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.article-toc a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.article-toc a:hover,
.article-toc a.active {
  color: var(--primary-light);
}

.article-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 1.8rem;
  margin: 2rem 0 1rem;
  color: #fff;
}

.article-content h3 {
  font-size: 1.4rem;
  margin: 1.5rem 0 1rem;
}

.article-content p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.article-content pre {
  background: var(--bg-dark);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--glass-border);
}

.article-content code {
  font-family: var(--font-latin);
  direction: ltr;
  display: inline-block;
  color: var(--primary-light);
}

.article-share {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.share-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}

.share-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Progress Bar */
.reading-progress-container {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 100;
}

.reading-progress-bar {
  height: 100%;
  background: var(--primary);
  width: 0%;
  transition: width 0.1s ease-out;
}

/* Responsive */
@media (max-width: 992px) {
  .featured-article {
    grid-template-columns: 1fr;
  }
  .featured-content {
    padding: var(--space-xl);
  }
  .article-container {
    grid-template-columns: 1fr;
  }
  .article-toc, .article-share {
    display: none;
  }
}