/* AVMARKONE Editorial Blog & Knowledge Architecture */
:root {
  --blog-ink: #0f172a;
  --blog-text: #334155;
  --blog-muted: #64748b;
  --blog-border: #e2e8f0;
  --blog-bg-soft: #f8fafc;
  --blog-accent: #1769ff;
  --blog-accent-soft: #edf4ff;
  --blog-success: #10b981;
}

/* Reading Progress Bar */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3.5px;
  background: linear-gradient(90deg, #1769ff, #6f47ff, #00d2ff);
  width: 0%;
  z-index: 9999;
  transition: width 0.1s ease;
}

/* Article Shell & Breadcrumb */
.blog-article-header {
  padding: 55px 0 35px;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-bottom: 1px solid var(--blog-border);
}

.blog-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--blog-muted);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.blog-breadcrumb a {
  color: var(--blog-accent);
  text-decoration: none;
}

.blog-breadcrumb a:hover {
  text-decoration: underline;
}

.blog-kicker-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.blog-category-badge {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blog-accent);
  background: var(--blog-accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid #d0e2ff;
}

.blog-read-time {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--blog-muted);
}

.blog-verified-badge {
  font-size: 11px;
  font-weight: 800;
  color: #065f46;
  background: #d1fae5;
  border: 1px solid #a7f3d0;
  padding: 4px 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.blog-article-title {
  font-size: clamp(28px, 4.2vw, 46px);
  font-weight: 950;
  line-height: 1.14;
  letter-spacing: -0.04em;
  color: var(--blog-ink);
  margin: 0 0 16px;
  max-width: 960px;
  text-wrap: balance;
}

.blog-article-lead {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.6;
  color: var(--blog-muted);
  max-width: 860px;
  margin: 0 0 24px;
}

.blog-author-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--blog-border);
  flex-wrap: wrap;
  gap: 16px;
}

.blog-author-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.blog-author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1769ff, #6f47ff);
  color: #fff;
  font-weight: 900;
  font-size: 16px;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 12px rgba(23, 105, 255, 0.25);
}

.blog-author-meta {
  display: flex;
  flex-direction: column;
}

.blog-author-name {
  font-weight: 850;
  font-size: 14px;
  color: var(--blog-ink);
}

.blog-author-role {
  font-size: 12px;
  color: var(--blog-muted);
}

.blog-share-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.blog-share-btn {
  font-size: 12px;
  font-weight: 800;
  padding: 7px 14px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--blog-border);
  color: var(--blog-ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.blog-share-btn:hover {
  background: var(--blog-bg-soft);
  border-color: #cbd5e1;
}

/* Two-Column Layout */
.blog-layout-container {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 50px;
  padding: 45px 0 80px;
  align-items: start;
}

/* Sticky Sidebar Table of Contents */
.blog-sidebar-sticky {
  position: sticky;
  top: 95px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding-right: 12px;
  scrollbar-width: thin;
}

.blog-sidebar-sticky::-webkit-scrollbar {
  width: 4px;
}

.blog-sidebar-sticky::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

.blog-toc-card {
  background: #fff;
  border: 1px solid var(--blog-border);
  border-radius: 18px;
  padding: 22px 20px;
  box-shadow: 0 10px 30px rgba(16, 33, 49, 0.04);
}

.blog-toc-card h4 {
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blog-muted);
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.blog-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.blog-toc-list a {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.45;
  color: #475569;
  text-decoration: none;
  display: block;
  padding: 6px 10px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  transition: all 0.2s;
}

.blog-toc-list a:hover {
  background: #f1f5f9;
  color: var(--blog-accent);
}

.blog-toc-list a.active {
  background: var(--blog-accent-soft);
  color: var(--blog-accent);
  border-left-color: var(--blog-accent);
  font-weight: 850;
}

/* Mobile Collapsible TOC */
.blog-mobile-toc {
  display: none;
  background: #fff;
  border: 1px solid var(--blog-border);
  border-radius: 14px;
  padding: 14px 18px;
  margin-bottom: 30px;
}

.blog-mobile-toc summary {
  font-weight: 850;
  font-size: 14px;
  color: var(--blog-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.blog-mobile-toc .blog-toc-list {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--blog-border);
}

/* Main Reading Content */
.blog-prose {
  color: var(--blog-text);
  font-size: 16.5px;
  line-height: 1.82;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  max-width: 820px;
}

.blog-prose h2 {
  font-size: clamp(23px, 3.2vw, 32px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.035em;
  color: var(--blog-ink);
  margin: 48px 0 18px;
  padding-top: 16px;
  border-top: 1px solid #f1f5f9;
  scroll-margin-top: 90px;
}

.blog-prose h3 {
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 850;
  line-height: 1.35;
  letter-spacing: -0.025em;
  color: var(--blog-ink);
  margin: 32px 0 14px;
  scroll-margin-top: 90px;
}

.blog-prose p {
  margin: 0 0 20px;
}

.blog-prose strong {
  color: var(--blog-ink);
  font-weight: 850;
}

.blog-prose ul, .blog-prose ol {
  margin: 0 0 24px;
  padding-left: 24px;
}

.blog-prose li {
  margin-bottom: 10px;
}

/* Executive Key Takeaways Callout */
.blog-takeaways-box {
  background: linear-gradient(135deg, #f0f7ff 0%, #f5f3ff 100%);
  border: 1px solid #bfdbfe;
  border-left: 5px solid var(--blog-accent);
  border-radius: 16px;
  padding: 26px 28px;
  margin: 32px 0 40px;
  box-shadow: 0 8px 24px rgba(23, 105, 255, 0.05);
}

.blog-takeaways-title {
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--blog-accent);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.blog-takeaways-box ul {
  margin: 0;
  padding-left: 20px;
}

.blog-takeaways-box li {
  font-size: 15px;
  line-height: 1.65;
  color: #1e293b;
  margin-bottom: 8px;
}

.blog-takeaways-box li:last-child {
  margin-bottom: 0;
}

/* Strategic Quote Callout */
.blog-callout-quote {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px 28px;
  margin: 34px 0;
  position: relative;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.03);
}

.blog-callout-quote b {
  display: block;
  font-size: 16.5px;
  color: var(--blog-ink);
  margin-bottom: 8px;
}

.blog-callout-quote p {
  margin: 0;
  font-size: 14.5px;
  color: var(--blog-muted);
  line-height: 1.65;
}

/* Comparison Table */
.blog-table-wrapper {
  overflow-x: auto;
  margin: 32px 0 40px;
  border: 1px solid var(--blog-border);
  border-radius: 16px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.03);
  background: #fff;
}

.blog-comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.55;
  text-align: left;
}

.blog-comparison-table th {
  background: #f8fafc;
  padding: 16px 20px;
  font-weight: 850;
  color: var(--blog-ink);
  border-bottom: 2px solid var(--blog-border);
  white-space: nowrap;
}

.blog-comparison-table th.highlight {
  background: #edf4ff;
  color: var(--blog-accent);
}

.blog-comparison-table td {
  padding: 15px 20px;
  border-bottom: 1px solid var(--blog-border);
  color: #334155;
}

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

.blog-comparison-table td.highlight {
  background: #fbfdff;
  font-weight: 750;
  color: #0f172a;
}

/* Citation & Sources Box */
.blog-citations-card {
  background: #f8fafc;
  border: 1px solid var(--blog-border);
  border-radius: 18px;
  padding: 28px 30px;
  margin: 50px 0;
}

.blog-citations-title {
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--blog-ink);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.blog-citations-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.blog-citation-item {
  font-size: 13.5px;
  line-height: 1.6;
  color: #475569;
  padding-left: 20px;
  position: relative;
}

.blog-citation-item::before {
  content: "🔗";
  position: absolute;
  left: 0;
  font-size: 11px;
  top: 3px;
}

.blog-citation-item a {
  color: var(--blog-accent);
  font-weight: 750;
  text-decoration: underline;
}

/* Author Bio Box */
.blog-author-bio-card {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--blog-border);
  border-radius: 20px;
  padding: 28px 30px;
  margin: 55px 0 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.blog-author-bio-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1769ff, #6f47ff);
  color: #fff;
  font-weight: 900;
  font-size: 26px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(23, 105, 255, 0.25);
}

.blog-author-bio-text h4 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 900;
  color: var(--blog-ink);
}

.blog-author-bio-text p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--blog-muted);
}

/* CTA Card in Post */
.blog-inpage-cta {
  background: linear-gradient(135deg, #0e1b28 0%, #162a3e 100%);
  color: #fff;
  border-radius: 20px;
  padding: 38px 40px;
  margin: 50px 0;
  text-align: center;
  box-shadow: 0 20px 45px rgba(14, 27, 40, 0.25);
}

.blog-inpage-cta h3 {
  color: #fff;
  font-size: 26px;
  font-weight: 900;
  margin: 0 0 12px;
  letter-spacing: -0.03em;
}

.blog-inpage-cta p {
  color: #c4d3e0;
  font-size: 15px;
  max-width: 600px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.blog-inpage-cta .btn {
  background: linear-gradient(90deg, #1769ff, #6f47ff);
  color: #fff;
  border: none;
  padding: 14px 26px;
  font-size: 15px;
  font-weight: 850;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(23, 105, 255, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}

.blog-inpage-cta .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(23, 105, 255, 0.45);
}

/* Homepage 4-Post Snippet Grid Styles */
.home-insights-band {
  background: #ffffff;
  padding: 72px 0 80px;
  border-top: 1px solid var(--blog-border);
  border-bottom: 1px solid var(--blog-border);
}

.home-insights-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 34px;
  flex-wrap: wrap;
  gap: 20px;
}

.home-insights-header-left {
  max-width: 720px;
}

.home-insights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.home-insight-card {
  background: #fff;
  border: 1px solid var(--blog-border);
  border-radius: 18px;
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 10px 25px rgba(16, 33, 49, 0.04);
  transition: all 0.25s ease;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.home-insight-card:hover {
  transform: translateY(-4px);
  border-color: #b9d5ff;
  box-shadow: 0 16px 36px rgba(23, 105, 255, 0.12);
}

.home-insight-card.featured-post {
  border: 2px solid #3b82f6;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
}

.home-insight-badge {
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blog-accent);
  background: var(--blog-accent-soft);
  padding: 3px 9px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 12px;
}

.home-insight-title {
  font-size: 16px;
  font-weight: 850;
  line-height: 1.38;
  color: var(--blog-ink);
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}

.home-insight-snippet {
  font-size: 13px;
  line-height: 1.6;
  color: var(--blog-muted);
  margin: 0 0 16px;
  flex-grow: 1;
}

.home-insight-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  color: #94a3b8;
  font-weight: 750;
  padding-top: 12px;
  border-top: 1px solid #f1f5f9;
}

.home-insight-readmore {
  color: var(--blog-accent);
  font-weight: 850;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Responsive Media Queries */
@media (max-width: 1080px) {
  .home-insights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .blog-layout-container {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .blog-sidebar-sticky {
    display: none;
  }
  .blog-mobile-toc {
    display: block;
  }
  .home-insights-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .home-insights-grid {
    grid-template-columns: 1fr;
  }
  .blog-article-header {
    padding: 35px 0 25px;
  }
  .blog-article-title {
    font-size: 24px;
    line-height: 1.22;
  }
  .blog-prose {
    font-size: 15.5px;
    line-height: 1.75;
  }
  .blog-takeaways-box {
    padding: 20px 18px;
  }
  .blog-author-bio-card {
    flex-direction: column;
    text-align: center;
    padding: 22px 18px;
  }
  .blog-inpage-cta {
    padding: 28px 20px;
  }
}