/* ==========================================================================
   GLaDOS Network (gladojc.cyou) - Article & Knowledge Base Stylesheet
   Pure Native CSS - Ultra Clean Typography & Responsive Reading Experience
   ========================================================================== */

.article-page {
  padding: 40px 0 80px;
}

/* Breadcrumb Navigation */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

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

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb-separator {
  color: var(--text-muted);
  font-size: 11px;
}

.breadcrumb-current {
  color: var(--accent-cyan);
  font-weight: 500;
}

/* Article Layout Grid */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
}

/* Main Article Container */
.article-main {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
}

.article-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 26px;
  margin-bottom: 34px;
}

.article-meta-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.article-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(24, 144, 255, 0.15);
  border: 1px solid rgba(24, 144, 255, 0.3);
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent-cyan);
}

.article-date, .article-readtime, .article-views {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.article-main-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.3;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.article-lead {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  background: rgba(24, 144, 255, 0.06);
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Article Body Typography */
.article-body {
  font-size: 16px;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 700;
  color: #ffffff;
  margin: 42px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--primary);
  border-radius: 2px;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f1f5f9;
  margin: 28px 0 14px;
}

.article-body p {
  margin-bottom: 20px;
}

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

.article-body ul, .article-body ol {
  margin: 0 0 22px 24px;
}

.article-body li {
  margin-bottom: 8px;
  padding-left: 4px;
}

.article-body li::marker {
  color: var(--primary);
}

.article-body blockquote {
  margin: 24px 0;
  padding: 18px 24px;
  background: rgba(255, 255, 255, 0.03);
  border-left: 4px solid var(--accent-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #94a3b8;
  font-style: italic;
}

.article-body a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: #ffffff;
}

/* Tables inside articles */
.article-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  text-align: left;
}

.article-table th {
  background: rgba(24, 144, 255, 0.12);
  color: #ffffff;
  font-weight: 600;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.article-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.article-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
  color: #ffffff;
}

/* Callout Box */
.callout-box {
  margin: 26px 0;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.6);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.callout-box.tip {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.06);
}

.callout-box.tip .callout-icon {
  color: var(--accent-green);
}

.callout-box.warning {
  border-color: rgba(245, 158, 11, 0.4);
  background: rgba(245, 158, 11, 0.06);
}

.callout-box.warning .callout-icon {
  color: var(--accent-amber);
}

.callout-icon {
  font-size: 22px;
  flex-shrink: 0;
  line-height: 1;
}

.callout-content h4 {
  font-size: 15px;
  margin-bottom: 6px;
}

.callout-content p {
  font-size: 14px;
  margin-bottom: 0;
  color: var(--text-secondary);
}

/* In-article CTA Box */
.in-article-cta {
  margin: 40px 0;
  padding: 30px;
  background: linear-gradient(135deg, rgba(24, 144, 255, 0.15) 0%, rgba(13, 27, 42, 0.8) 100%);
  border: 1px solid rgba(24, 144, 255, 0.4);
  border-radius: var(--radius-md);
  text-align: center;
}

.in-article-cta h3 {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.in-article-cta p {
  color: var(--text-secondary);
  font-size: 14.5px;
  max-width: 600px;
  margin: 0 auto 20px;
}

/* Article Tags */
.article-tags-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.tag-label {
  font-size: 13px;
  color: var(--text-muted);
}

.tag-pill {
  font-size: 12.5px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.tag-pill:hover {
  background: rgba(24, 144, 255, 0.15);
  border-color: var(--primary);
  color: var(--accent-cyan);
}

/* Author Box */
.author-box {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 32px;
  padding: 22px 26px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.author-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  flex-shrink: 0;
}

.author-info h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.author-info p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Sidebar Styles */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
}

.sidebar-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 22px;
}

.sidebar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-nav-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.sidebar-nav-item a:hover {
  color: var(--primary);
}

.sidebar-nav-item .side-item-meta {
  font-size: 11.5px;
  color: var(--text-muted);
}

.sidebar-cta-card {
  background: linear-gradient(135deg, rgba(24, 144, 255, 0.15) 0%, rgba(18, 28, 48, 0.95) 100%);
  border: 1px solid rgba(24, 144, 255, 0.35);
  text-align: center;
}

.sidebar-cta-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.sidebar-cta-card p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

/* Article Hub Index Listing */
.article-hub-header {
  text-align: center;
  max-width: 800px;
  margin: 20px auto 48px;
}

.article-hub-header h1 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.article-hub-header p {
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.hub-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.hub-filter-pill {
  padding: 8px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.hub-filter-pill:hover, .hub-filter-pill.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

/* Responsive */
@media (max-width: 992px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
    margin-top: 30px;
  }
}

@media (max-width: 600px) {
  .article-main {
    padding: 26px 18px;
  }
  .article-main-title {
    font-size: 1.6rem;
  }
  .article-body h2 {
    font-size: 1.35rem;
  }
}