/* ==========================================================================
   DIGITAL EXCELLENCE — EDITORIAL BLOG SYSTEM STYLES
   Mobile-first, high-performance, accessible, Core Web Vitals optimized
   ========================================================================== */

:root {
  --blog-text: #0f172a;
  --blog-body: #334155;
  --blog-muted: #64748b;
  --blog-border: #e2e8f0;
  --blog-card-bg: #ffffff;
  --blog-primary: #0284c7;
  --blog-primary-dark: #1d4ed8;
  --blog-accent: #2563eb;
  --blog-surface: #f8fafc;
  --blog-callout-bg: #f0f7ff;
  --blog-callout-border: #bae6fd;
  --blog-font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --reading-width: 760px;
}

/* Base Page Layout */
.blog-article-page {
  font-family: var(--blog-font);
  color: var(--blog-text);
  background: #fbfdff;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 110px; /* Safe distance above fixed mobile bar */
}

.blog-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
  box-sizing: border-box;
}

/* Breadcrumbs */
.blog-breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13.5px;
  color: var(--blog-muted);
  margin-bottom: 24px;
}

.blog-breadcrumbs a {
  color: var(--blog-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.blog-breadcrumbs a:hover {
  color: var(--blog-primary);
  text-decoration: underline;
}

.blog-breadcrumbs .sep {
  opacity: 0.5;
}

.blog-breadcrumbs .current {
  color: var(--blog-text);
  font-weight: 600;
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Article Container */
.blog-article {
  max-width: var(--reading-width);
  margin: 0 auto;
}

/* Article Header */
.blog-header {
  margin-bottom: 32px;
}

.blog-category-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: rgba(14, 165, 233, 0.12);
  color: #0284c7;
  border: 1px solid rgba(14, 165, 233, 0.2);
  margin-bottom: 16px;
}

.blog-title {
  font-size: clamp(30px, 4.2vw, 44px);
  font-weight: 850;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: #091426;
  margin-bottom: 20px;
}

.blog-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--blog-muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--blog-border);
}

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

.blog-meta-item strong {
  color: var(--blog-text);
  font-weight: 600;
}

.blog-meta-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

/* Featured Image */
.blog-featured-media {
  margin: 28px 0 36px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.07);
  background: #f1f5f9;
}

.blog-featured-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 630;
  display: block;
  object-fit: cover;
}

.blog-featured-caption {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: #ffffff;
  border-top: 1px solid rgba(226, 232, 240, 0.85);
  font-size: 13.5px;
  color: #64748b;
  font-style: italic;
  line-height: 1.5;
}

.blog-featured-caption svg {
  flex-shrink: 0;
  color: #0284c7;
}

/* Inline Editorial Visuals */
.blog-visual-figure {
  margin: 40px 0 44px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.95);
  box-shadow: 0 10px 32px -8px rgba(15, 23, 42, 0.07);
  background: #0f172a;
}

.blog-visual-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 600;
  display: block;
  object-fit: contain;
}

.blog-visual-caption {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 20px;
  background: #ffffff;
  border-top: 1px solid rgba(226, 232, 240, 0.9);
  font-size: 13.5px;
  color: #334155;
  font-weight: 600;
  line-height: 1.5;
}

.blog-visual-caption svg {
  flex-shrink: 0;
  color: #2563eb;
}

/* Table of Contents (Mobile & Desktop) */
.blog-toc-card {
  margin: 28px 0 36px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--blog-border);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  overflow: hidden;
}

.blog-toc-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
  font-weight: 750;
  font-size: 16px;
  color: #0f172a;
  background: #f8fafc;
  border-bottom: 1px solid transparent;
}

.blog-toc-toggle:hover {
  background: #f1f5f9;
}

.blog-toc-card[open] .blog-toc-toggle {
  border-bottom-color: var(--blog-border);
}

.blog-toc-list {
  padding: 16px 22px 20px 36px;
  margin: 0;
  list-style-type: decimal;
}

.blog-toc-list li {
  margin-bottom: 9px;
  color: #64748b;
  font-size: 14.5px;
}

.blog-toc-list li a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.blog-toc-list li a:hover {
  color: #0284c7;
  text-decoration: underline;
}

/* Lead & Callout */
.blog-lead {
  font-size: clamp(17px, 2.2vw, 19.5px);
  line-height: 1.7;
  color: #1e293b;
  font-weight: 500;
  margin-bottom: 24px;
}

.blog-callout {
  margin: 26px 0 32px;
  padding: 20px 24px;
  border-radius: 15px;
  background: var(--blog-callout-bg);
  border: 1px solid var(--blog-callout-border);
  border-left: 5px solid #0284c7;
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.05);
}

.blog-callout__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 800;
  color: #0369a1;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.blog-callout p {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: #0f172a;
}

/* Main Article Content Typography */
.blog-content {
  font-size: clamp(16.5px, 2.1vw, 18px);
  line-height: 1.78;
  color: var(--blog-body);
}

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

.blog-content p strong {
  color: #0f172a;
  font-weight: 700;
}

.blog-content a {
  color: #2563eb;
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
  transition: color 0.18s ease;
}

.blog-content a:hover {
  color: #0284c7;
}

.blog-content h2 {
  font-size: clamp(24px, 3.2vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.6px;
  color: #0a1629;
  margin: 44px 0 18px;
  padding-top: 8px;
}

.blog-content h3 {
  font-size: clamp(20px, 2.5vw, 23px);
  font-weight: 750;
  line-height: 1.35;
  color: #0f172a;
  margin: 32px 0 14px;
}

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

.blog-content li {
  margin-bottom: 10px;
  padding-left: 4px;
}

/* Responsive Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 28px 0 32px;
  border-radius: 14px;
  border: 1px solid var(--blog-border);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  background: #ffffff;
}

.blog-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 15px;
  min-width: 520px;
}

.blog-table th {
  background: #f8fafc;
  color: #0f172a;
  font-weight: 750;
  padding: 14px 16px;
  border-bottom: 2px solid var(--blog-border);
  font-size: 14px;
  letter-spacing: 0.3px;
}

.blog-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
  vertical-align: top;
}

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

.blog-table tr:nth-child(even) td {
  background: #fafcff;
}

.table-note {
  font-size: 14px;
  color: var(--blog-muted);
  margin-top: 10px;
  line-height: 1.6;
}

/* Inline Diagram / Visual Framework */
.blog-inline-visual {
  margin: 36px 0;
  padding: 24px;
  border-radius: 18px;
  background: linear-gradient(135deg, #f0f7ff 0%, #faf5ff 100%);
  border: 1px solid rgba(147, 197, 253, 0.4);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
  text-align: center;
}

.blog-inline-visual__title {
  font-size: 17px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 8px;
}

.blog-inline-visual__desc {
  font-size: 14.5px;
  color: #475569;
  max-width: 640px;
  margin: 0 auto 18px;
}

.blog-inline-visual img {
  width: 100%;
  max-width: 680px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

/* FAQ Accordion */
.blog-faqs {
  margin: 48px 0 36px;
}

.blog-faqs-title {
  font-size: clamp(24px, 3.2vw, 30px);
  font-weight: 850;
  color: #0a1629;
  margin-bottom: 20px;
}

.faq-item {
  border: 1px solid var(--blog-border);
  border-radius: 14px;
  background: #ffffff;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  font-size: 16.5px;
  font-weight: 750;
  color: #0f172a;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  font-weight: 500;
  color: var(--blog-primary);
  transition: transform 0.2s;
}

.faq-item[open] .faq-question::after {
  content: '−';
}

.faq-answer {
  padding: 0 20px 20px;
  font-size: 15.5px;
  line-height: 1.75;
  color: #475569;
  border-top: 1px solid transparent;
}

.faq-item[open] .faq-answer {
  border-top-color: #f1f5f9;
  padding-top: 14px;
}

/* Primary High-Converting Contact Us CTA Card */
.blog-cta-card {
  margin: 48px 0;
  padding: 36px 30px;
  border-radius: 20px;
  background: linear-gradient(135deg, #091e3a 0%, #102e5a 60%, #1e1b4b 100%);
  color: #ffffff;
  box-shadow: 0 20px 45px -10px rgba(15, 23, 42, 0.25);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.blog-cta-card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.blog-cta-tag {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  margin-bottom: 14px;
}

.blog-cta-card h3 {
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 850;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 12px;
}

.blog-cta-card p {
  font-size: 16px;
  line-height: 1.65;
  color: #cbd5e1;
  max-width: 580px;
  margin: 0 auto 24px;
}

.blog-cta-btn-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.blog-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 50px;
  padding: 0 32px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 750;
  color: #ffffff !important;
  text-decoration: none !important;
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}

.blog-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(2, 132, 199, 0.45);
}

.blog-cta-sublinks {
  font-size: 13.5px;
  color: #94a3b8;
}

.blog-cta-sublinks a {
  color: #38bdf8 !important;
  text-decoration: underline !important;
  margin: 0 6px;
}

/* Related Articles Module */
.blog-related-section {
  margin-top: 52px;
  padding-top: 36px;
  border-top: 1px solid var(--blog-border);
}

.blog-related-title {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 22px;
}

.blog-related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.related-card {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--blog-border);
  border-radius: 16px;
  padding: 20px;
  text-decoration: none;
  transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: #93c5fd;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

.related-card-category {
  font-size: 11px;
  font-weight: 750;
  text-transform: uppercase;
  color: var(--blog-primary);
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.related-card-title {
  font-size: 15.5px;
  font-weight: 750;
  line-height: 1.35;
  color: #0f172a;
  margin-bottom: 12px;
}

.related-card-meta {
  margin-top: auto;
  font-size: 13px;
  color: var(--blog-muted);
}

/* ==========================================================================
   /blog ARCHIVE LISTING STYLES
   ========================================================================== */
.blog-archive-hero {
  text-align: center;
  padding: 40px 20px 28px;
  max-width: 820px;
  margin: 0 auto;
}

.blog-archive-kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #0284c7;
  background: rgba(14, 165, 233, 0.1);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.blog-archive-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 850;
  letter-spacing: -1.5px;
  color: #091426;
  line-height: 1.15;
  margin-bottom: 16px;
}

.blog-archive-hero p {
  font-size: 17px;
  line-height: 1.65;
  color: #475569;
}

/* Category Filter Tabs */
.blog-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 36px;
}

.filter-pill {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--blog-border);
  background: #ffffff;
  color: #475569;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.filter-pill:hover,
.filter-pill.is-active {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

/* Archive Grid */
.blog-archive-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.archive-card {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--blog-border);
  border-radius: 18px;
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.archive-card:hover {
  transform: translateY(-4px);
  border-color: #93c5fd;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.archive-card-media {
  width: 100%;
  aspect-ratio: 1200 / 630;
  background: #f1f5f9;
  position: relative;
  overflow: hidden;
}

.archive-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.archive-card:hover .archive-card-img {
  transform: scale(1.04);
}

.archive-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.archive-card-badge {
  font-size: 11.5px;
  font-weight: 750;
  color: #0284c7;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.archive-card-title {
  font-size: 17.5px;
  font-weight: 750;
  line-height: 1.35;
  color: #0f172a;
  margin-bottom: 10px;
}

.archive-card-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #64748b;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.archive-card-footer {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: #94a3b8;
  font-weight: 600;
}

/* ==========================================================================
   RESPONSIVE QUERIES (Mobile-First Polish)
   ========================================================================== */
@media (max-width: 991px) {
  .blog-archive-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
  .blog-related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .blog-shell {
    padding: 16px 14px 40px;
  }
  .blog-title {
    font-size: 26px;
    letter-spacing: -0.8px;
    line-height: 1.2;
  }
  .blog-content {
    font-size: 16.5px;
    line-height: 1.72;
  }
  .blog-content h2 {
    font-size: 23px;
    margin: 36px 0 14px;
  }
  .blog-content h3 {
    font-size: 19px;
  }
  .blog-cta-card {
    padding: 28px 18px;
    border-radius: 16px;
  }
  .blog-cta-btn {
    width: 100%;
  }
  .blog-archive-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .blog-related-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .blog-table th,
  .blog-table td {
    padding: 11px 12px;
    font-size: 13.5px;
  }
}

@media (max-width: 420px) {
  .blog-breadcrumbs {
    font-size: 12.5px;
  }
  .blog-title {
    font-size: 23px;
  }
  .blog-lead {
    font-size: 16px;
  }
  .blog-callout {
    padding: 16px 16px;
  }
}