/* ==========================================================================
   UOCloud Article & Content Hub Stylesheet
   Pure Native CSS - High Readability & SEO In-Article Internal Linking
   ========================================================================== */

.article-page {
  padding: 40px 0 90px 0;
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
  margin-bottom: 30px;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-dim);
}
.breadcrumb-item a {
  color: var(--text-muted);
}
.breadcrumb-item a:hover {
  color: var(--primary);
}
.breadcrumb-separator {
  color: var(--text-dim);
  font-size: 0.8rem;
}
.breadcrumb-item.current {
  color: #e2e8f0;
  font-weight: 500;
  max-width: 480px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

/* Main Article Content */
.article-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(14px);
}

.article-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 28px;
  margin-bottom: 36px;
}
.article-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 18px;
}
.article-main-title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.35;
  color: #ffffff;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Article Keyword Pill Cloud */
.article-keywords-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.keyword-tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #7dd3fc;
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* Article Body Typography */
.article-body {
  font-size: 1.05rem;
  line-height: 1.9;
  color: #cbd5e1;
}
.article-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #ffffff;
  margin: 42px 0 18px 0;
  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: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: 2px;
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f1f5f9;
  margin: 28px 0 14px 0;
}
.article-body p {
  margin-bottom: 22px;
  text-align: justify;
}
.article-body ul, .article-body ol {
  margin: 18px 0 24px 24px;
}
.article-body li {
  margin-bottom: 10px;
  line-height: 1.8;
}
.article-body strong {
  color: #ffffff;
  font-weight: 600;
}

/* In-Article Alert Boxes */
.article-alert {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  margin: 28px 0;
  font-size: 0.95rem;
  line-height: 1.7;
}
.article-alert-info {
  background: rgba(56, 189, 248, 0.08);
  border-left: 4px solid var(--primary);
  color: #bae6fd;
}
.article-alert-tip {
  background: rgba(16, 185, 129, 0.08);
  border-left: 4px solid var(--success);
  color: #a7f3d0;
}
.article-alert-warning {
  background: rgba(245, 158, 11, 0.08);
  border-left: 4px solid var(--warning);
  color: #fde68a;
}

/* In-Article Data Table */
.article-table-wrapper {
  overflow-x: auto;
  margin: 32px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}
.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}
.article-table th {
  background: rgba(30, 41, 59, 0.7);
  color: #ffffff;
  font-weight: 600;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
}
.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
}
.article-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* In-Article CTA Banner */
.article-cta-box {
  background: linear-gradient(135deg, rgba(14, 30, 60, 0.9) 0%, rgba(20, 18, 48, 0.9) 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 40px 0;
  text-align: center;
  box-shadow: var(--shadow-glow);
}
.article-cta-box h3 {
  font-size: 1.45rem;
  color: #ffffff;
  margin-bottom: 10px;
}
.article-cta-box p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto 20px auto;
}

/* Internal Linking Highlights */
.internal-link {
  color: var(--primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.internal-link:hover {
  color: #7dd3fc;
}

/* Article Pagination / Prev Next */
.article-nav-prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}
.nav-article-card {
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: block;
  text-decoration: none;
}
.nav-article-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  background: rgba(56, 189, 248, 0.05);
}
.nav-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}
.nav-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  line-height: 1.4;
}

/* Article Sidebar */
.article-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(12px);
}
.widget-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.sidebar-plan-card {
  text-align: center;
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.05);
  border: 1px solid rgba(56, 189, 248, 0.2);
}
.sidebar-plan-price {
  font-size: 2rem;
  font-weight: 900;
  color: #ffffff;
  font-family: var(--font-mono);
  margin: 10px 0;
}
.sidebar-article-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sidebar-article-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.4;
}
.sidebar-article-item a:hover {
  color: var(--primary);
}
.sidebar-article-date {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Responsive for Articles */
@media (max-width: 992px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}
@media (max-width: 640px) {
  .article-main {
    padding: 24px 18px;
  }
  .article-nav-prev-next {
    grid-template-columns: 1fr;
  }
}