/* ==========================================================================
   星云 (StarYun) - Blog & SEO Article Stylesheet
   Theme: Premium Cloud Glassmorphism
   Deep Blue-Purple Atmosphere + Frosted Crystal Surfaces
   ========================================================================== */

.article-header {
  padding-top: 130px;
  padding-bottom: 40px;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99, 102, 241, 0.18) 0%, rgba(59, 130, 246, 0.1) 40%, transparent 75%);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: #ffffff;
}

.breadcrumb-separator {
  color: var(--text-muted);
}

.article-post-header {
  max-width: 860px;
  margin: 0 auto;
}

.article-post-title {
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  font-weight: 800;
  line-height: 1.22;
  margin-bottom: 20px;
  color: #ffffff;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.article-meta-bar span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta-tag {
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  font-weight: 600;
  border: 1px solid rgba(147, 197, 253, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

/* Article Layout & Content */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  max-width: 1140px;
  margin: 0 auto;
  padding: 40px 0 80px 0;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-body h2 {
  font-size: 1.65rem;
  margin: 44px 0 20px 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 12px;
}

.article-body h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--gradient-brand);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
}

.article-body h3 {
  font-size: 1.3rem;
  margin: 32px 0 16px 0;
  color: #f1f5f9;
}

.article-body p {
  margin-bottom: 1.4rem;
}

.article-body strong {
  color: #ffffff;
  font-weight: 600;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 24px;
}

.article-body ul li {
  list-style-type: disc;
  margin-bottom: 8px;
}

.article-body ol li {
  list-style-type: decimal;
  margin-bottom: 8px;
}

.article-body blockquote {
  background: rgba(18, 26, 58, 0.55);
  border-left: 4px solid var(--accent-indigo);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 24px;
  margin: 28px 0;
  color: #94a3b8;
  font-style: normal;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

/* Informative Callout Boxes - Glassmorphic Panels */
.callout-box {
  background: rgba(18, 26, 58, 0.52);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 22px;
  margin: 28px 0;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.callout-box.tip {
  border-color: rgba(16, 185, 129, 0.35);
  background: rgba(16, 185, 129, 0.08);
}

.callout-box.info {
  border-color: rgba(99, 102, 241, 0.35);
  background: rgba(99, 102, 241, 0.08);
}

.callout-title {
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* In-article Table - Glass Table */
.article-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: rgba(18, 26, 58, 0.45);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

.article-table th {
  background: rgba(255, 255, 255, 0.04);
  padding: 14px 18px;
  color: #ffffff;
  font-weight: 600;
  border-bottom: 1px solid var(--border-subtle);
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: #cbd5e1;
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-table tr:hover td {
  background: rgba(99, 102, 241, 0.08);
}

/* Code block inside articles - Translucent Indigo Terminal */
.article-code-block {
  background: rgba(10, 16, 38, 0.72);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  margin: 24px 0;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  color: #38bdf8;
  line-height: 1.6;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), inset 0 2px 6px rgba(2, 6, 23, 0.3);
}

/* In-article CTA Box - Radiant Cloud Glass Banner */
.article-cta-box {
  background: linear-gradient(135deg, rgba(28, 42, 92, 0.75) 0%, rgba(18, 26, 60, 0.8) 100%);
  border: 1px solid rgba(147, 197, 253, 0.28);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 40px 0;
  text-align: center;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 20px 50px -10px rgba(2, 6, 23, 0.6), inset 0 1px 0 0 rgba(255, 255, 255, 0.2), 0 0 40px -10px rgba(99, 102, 241, 0.25);
}

.article-cta-title {
  font-size: 1.4rem;
  margin-bottom: 10px;
  color: #ffffff;
}

.article-cta-desc {
  font-size: 0.95rem;
  color: #94a3b8;
  max-width: 540px;
  margin: 0 auto 20px auto;
}

/* Article Sidebar (Sticky) */
.article-sidebar {
  position: sticky;
  top: 96px;
  height: fit-content;
}

.sidebar-widget {
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
}

.sidebar-title {
  font-size: 1.05rem;
  margin-bottom: 16px;
  color: #ffffff;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.885rem;
}

.sidebar-nav-list a {
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: block;
}

.sidebar-nav-list a:hover {
  color: var(--accent-cyan);
  transform: translateX(4px);
}

.sidebar-cta {
  background: linear-gradient(180deg, rgba(30, 44, 96, 0.72) 0%, rgba(18, 26, 62, 0.65) 100%);
  border: 1px solid rgba(147, 197, 253, 0.35);
  text-align: center;
  box-shadow: 0 16px 40px -10px rgba(2, 6, 23, 0.6), inset 0 1px 0 0 rgba(255, 255, 255, 0.24);
}

.sidebar-cta h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.sidebar-cta p {
  font-size: 0.825rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

/* Related Articles at Bottom */
.related-articles-section {
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0;
  margin-top: 60px;
}

.related-title {
  font-size: 1.6rem;
  margin-bottom: 28px;
  color: #ffffff;
}

/* Responsive for Articles */
@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 600px) {
  .article-header {
    padding-top: 96px;
  }

  .article-post-title {
    font-size: 1.85rem;
  }

  .article-body {
    font-size: 0.975rem;
  }

  .article-cta-box {
    padding: 24px 16px;
  }
}