/* ==========================================================================
   UOCloud (uocloud.lol) Article & Knowledge Base Stylesheet
   Pure Native CSS - Ultra Fast Loading, Zero External Dependencies
   ========================================================================== */

/* Reading Progress Bar at very top */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #be123c, #ff2a5f, #ff7597);
  width: 0%;
  z-index: 999;
  transition: width 0.1s ease;
}

/* Breadcrumbs */
.breadcrumb-nav {
  padding: 24px 0 10px;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 8px;
  flex-wrap: wrap;
}

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

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

.breadcrumb-separator {
  color: var(--border-light);
}

/* Article Hero Header */
.article-header-section {
  padding: 30px 0 40px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
}

.article-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background: rgba(255, 42, 95, 0.12);
  border: 1px solid rgba(255, 42, 95, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: #ff4d79;
  font-weight: 600;
  margin-bottom: 18px;
}

.article-main-title {
  font-size: 2.6rem;
  font-weight: 850;
  line-height: 1.25;
  letter-spacing: -0.8px;
  color: #ffffff;
  margin-bottom: 20px;
}

.article-meta-info {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

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

/* Article Main Layout (Grid with Sticky Sidebar) */
.article-container-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
  padding-bottom: 80px;
}

/* Article Content Body */
.article-body-content {
  color: #cbd5e1;
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-body-content p {
  margin-bottom: 22px;
}

.article-body-content h2 {
  font-size: 1.75rem;
  color: #ffffff;
  margin: 45px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.article-body-content h2::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 40px;
  height: 2px;
  background: #ff2a5f;
}

.article-body-content h3 {
  font-size: 1.35rem;
  color: #f1f5f9;
  margin: 30px 0 14px;
}

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

.article-body-content li {
  margin-bottom: 10px;
}

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

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

.article-body-content a:hover {
  color: var(--accent-cyan);
}

/* Callout Box */
.callout-box {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  margin: 28px 0;
  background: rgba(56, 189, 248, 0.08);
  border-left: 4px solid var(--primary);
}

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

.callout-box.warning {
  background: rgba(245, 158, 11, 0.08);
  border-left-color: var(--warning);
}

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

.callout-box p {
  margin-bottom: 0;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Code Snippet Box */
.code-snippet-box {
  background: #040810;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 24px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: #e2e8f0;
  line-height: 1.6;
}

/* Table of comparison */
.data-table-wrapper {
  overflow-x: auto;
  margin: 30px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.data-table th, .data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  font-weight: 600;
}

.data-table tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* CTA In-Article Banner */
.article-cta-box {
  background: linear-gradient(135deg, rgba(45, 14, 28, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid rgba(255, 42, 95, 0.45);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  margin: 45px 0;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 42, 95, 0.2);
}

.article-cta-box h3 {
  font-size: 1.45rem;
  margin-bottom: 10px;
  color: #ffffff;
}

.article-cta-box p {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 24px;
}

/* Tag Cloud on Article */
.article-tag-cloud {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 40px 0 20px;
  padding-top: 25px;
  border-top: 1px solid var(--border-color);
}

.article-tag-cloud span {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.article-tag-item {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.article-tag-item:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Sticky Sidebar */
.article-sidebar {
  position: sticky;
  top: 100px;
}

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

.sidebar-widget-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.toc-list {
  list-style: none;
}

.toc-list li {
  margin-bottom: 10px;
}

.toc-list a {
  font-size: 0.88rem;
  color: var(--text-muted);
  display: block;
  line-height: 1.4;
}

.toc-list a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.related-posts-list {
  list-style: none;
}

.related-post-item {
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.related-post-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.related-post-title {
  font-size: 0.88rem;
  color: #cbd5e1;
  font-weight: 500;
  line-height: 1.4;
  display: block;
  margin-bottom: 4px;
}

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

.related-post-date {
  font-size: 0.76rem;
  color: var(--text-dim);
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .article-container-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .article-main-title {
    font-size: 2rem;
  }
}