/* ==========================================================================
   css/pages/blog.css — Blog Hub & Article Page Specific Styles
   ========================================================================== */

/* ──────────────────────────────────────────────────────────────────────────
   BLOG HUB GRID
   ────────────────────────────────────────────────────────────────────────── */
.blog-hub-grid {
  display:               grid;
  grid-template-columns: repeat(3, 1fr);
  gap:                   var(--space-8);
}

/* ──────────────────────────────────────────────────────────────────────────
   FEATURED ARTICLE (first card, full width)
   ────────────────────────────────────────────────────────────────────────── */
.blog-card-featured {
  grid-column: 1 / -1;
  display:     grid;
  grid-template-columns: 1.2fr 1fr;
}

.blog-card-featured .blog-card-img {
  height:     100%;
  min-height: 340px;
}

.blog-card-featured .blog-card-img-wrap {
  overflow: hidden;
}

.blog-card-featured .blog-card-body {
  padding: var(--space-10);
}

.blog-card-featured .blog-card-title {
  font-size: var(--text-3xl);
}

/* ──────────────────────────────────────────────────────────────────────────
   ARTICLE PAGE LAYOUT
   ────────────────────────────────────────────────────────────────────────── */
.article-layout {
  display:     grid;
  grid-template-columns: 1fr 280px;
  gap:         var(--space-14);
  align-items: flex-start;
}

/* Sidebar */
.article-sidebar {
  position: sticky;
  top:      calc(var(--navbar-h) + var(--space-6));
}

.sidebar-card {
  background:    var(--card-bg);
  border:        1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding:       var(--space-7);
  margin-bottom: var(--space-6);
}

.sidebar-card-title {
  font-family:    var(--font-heading);
  font-size:      var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 2px;
  color:          var(--primary);
  margin-bottom:  var(--space-5);
  display:        flex;
  align-items:    center;
  gap:            var(--space-2);
}

.sidebar-card-title::before {
  content:    '';
  width:      3px;
  height:     14px;
  background: var(--primary);
  border-radius: var(--radius-full);
  display:    block;
}

/* Table of contents */
.toc-list {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-2);
}

.toc-list a {
  font-size:   var(--text-sm);
  color:       var(--text-muted);
  padding:     var(--space-2) var(--space-3);
  border-left: 2px solid transparent;
  transition:  all var(--transition-base);
  display:     block;
}

.toc-list a:hover,
.toc-list a.active {
  color:        var(--primary);
  border-color: var(--primary);
  background:   var(--primary-glow-sm);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Related articles sidebar */
.related-list {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-4);
}

.related-item {
  display:     flex;
  gap:         var(--space-4);
  align-items: flex-start;
}

.related-item img {
  width:         72px;
  height:        56px;
  object-fit:    cover;
  border-radius: var(--radius-sm);
  flex-shrink:   0;
  border:        1px solid var(--card-border);
}

.related-item-title {
  font-size:   var(--text-sm);
  color:       var(--text-main);
  line-height: 1.4;
  font-weight: 500;
  transition:  color var(--transition-base);
}

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

.related-item-date {
  font-family: var(--font-mono);
  font-size:   0.68rem;
  color:       var(--text-subtle);
  margin-top:  var(--space-1);
}

/* ──────────────────────────────────────────────────────────────────────────
   ARTICLE HEADER
   ────────────────────────────────────────────────────────────────────────── */
.article-header {
  margin-bottom: var(--space-10);
}

.article-header .blog-meta {
  margin-bottom: var(--space-5);
}

.article-header h1 {
  font-size:     clamp(2.25rem, 4vw, 3.25rem);
  margin-bottom: var(--space-6);
  line-height:   1.1;
}

.article-header p.lead {
  font-size:   var(--text-xl);
  color:       var(--text-muted);
  line-height: 1.65;
}

/* Author row */
.article-byline {
  display:       flex;
  align-items:   center;
  gap:           var(--space-4);
  padding:       var(--space-5) 0;
  border-top:    1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  margin-top:    var(--space-6);
}

.byline-avatar {
  width:         44px;
  height:        44px;
  border-radius: var(--radius-full);
  background:    var(--primary-glow);
  border:        2px solid rgba(0, 243, 255, 0.3);
  display:       flex;
  align-items:   center;
  justify-content: center;
  font-size:     1.25rem;
  flex-shrink:   0;
}

.byline-text {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-1);
}

.byline-name {
  font-size:   var(--text-sm);
  font-weight: 600;
  color:       var(--text-white);
}

.byline-meta {
  font-family: var(--font-mono);
  font-size:   0.68rem;
  color:       var(--text-subtle);
  letter-spacing: 0.5px;
}

.byline-reading-time {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size:   var(--text-xs);
  color:       var(--text-subtle);
  white-space: nowrap;
}

/* ──────────────────────────────────────────────────────────────────────────
   ARTICLE FOOTER / SHARE
   ────────────────────────────────────────────────────────────────────────── */
.article-footer {
  margin-top:    var(--space-14);
  padding-top:   var(--space-8);
  border-top:    1px solid var(--glass-border);
  display:       flex;
  align-items:   center;
  justify-content: space-between;
  gap:           var(--space-4);
  flex-wrap:     wrap;
}

.back-link {
  display:     inline-flex;
  align-items: center;
  gap:         var(--space-2);
  color:       var(--text-muted);
  font-size:   var(--text-sm);
  transition:  color var(--transition-base);
}

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

/* ──────────────────────────────────────────────────────────────────────────
   RESPONSIVE
   ────────────────────────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .article-layout          { grid-template-columns: 1fr; }
  .article-sidebar         { position: static; }
  .blog-card-featured      { grid-template-columns: 1fr; }
  .blog-card-featured .blog-card-img { height: 280px; }
}

@media (max-width: 992px) {
  .blog-hub-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .blog-hub-grid           { grid-template-columns: 1fr; }
  .blog-card-featured      { grid-column: auto; }
  .article-footer          { flex-direction: column; align-items: flex-start; }
}