/* ============================================================
   Acadovia Blog — layout system (v2)
   Used by /blogs, posts, migrate, site-map long-form pages.
   ============================================================ */

:root {
  --blog-max: 720px;
  --blog-wide: 1080px;
  --blog-ink: var(--ink, #0c1322);
  --blog-ink2: var(--ink-2, #384357);
  --blog-ink3: var(--ink-3, #6b768c);
  --blog-line: var(--mist, #e8ebf2);
  --blog-paper: var(--paper, #ffffff);
  --blog-cream: var(--cream, #fbfaf6);
  --blog-cobalt: var(--pine, #2447D8);
  --blog-coral: var(--saffron, #F0644D);
}

/* —— Chrome —— */
.blog-chrome {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--blog-line);
}
.blog-chrome-inner {
  max-width: var(--blog-wide);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.blog-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--blog-ink);
  text-decoration: none;
  margin-right: auto;
}
.blog-brand:hover { text-decoration: none; color: var(--blog-cobalt); }
.blog-brand svg { width: 28px; height: 28px; flex-shrink: 0; }
.blog-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13.5px;
}
.blog-nav a {
  color: var(--blog-ink2);
  text-decoration: none;
  padding: 8px 11px;
  border-radius: 8px;
}
.blog-nav a:hover { background: var(--blog-cream); color: var(--blog-ink); text-decoration: none; }
.blog-nav a.is-active { color: var(--blog-cobalt); font-weight: 500; background: #E4EBFF; }
.blog-cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border-radius: 9px;
  background: var(--blog-coral);
  color: #fff !important;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none !important;
  white-space: nowrap;
}
.blog-cta-btn:hover { background: #D84A34; }
@media (max-width: 760px) {
  .blog-nav { display: none; }
  .blog-chrome-inner { padding: 10px 16px; }
}

/* —— Progress (reading) —— */
.blog-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--blog-cobalt), var(--blog-coral));
  z-index: 60;
  pointer-events: none;
}

/* —— Article shell —— */
.blog-article {
  max-width: var(--blog-max);
  margin: 0 auto;
  padding: 40px 24px 96px;
}
@media (max-width: 720px) {
  .blog-article { padding: 28px 18px 72px; }
}

.blog-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  align-items: center;
  font-size: 12.5px;
  color: var(--blog-ink3);
  margin: 0 0 22px;
}
.blog-breadcrumb a { color: var(--blog-ink2); text-decoration: none; }
.blog-breadcrumb a:hover { color: var(--blog-cobalt); text-decoration: underline; }
.blog-breadcrumb .sep { opacity: 0.45; }

.blog-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blog-cobalt);
  margin: 0 0 14px;
}
.blog-kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 99px;
  background: var(--blog-coral);
}

.blog-h1 {
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 600;
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.032em;
  color: var(--blog-ink);
  margin: 0 0 16px;
  text-wrap: balance;
}
.blog-h1 .acc { color: var(--blog-cobalt); }

.blog-lede {
  font-size: clamp(16.5px, 2vw, 18.5px);
  line-height: 1.55;
  color: var(--blog-ink2);
  margin: 0 0 22px;
  max-width: 38em;
  text-wrap: pretty;
}

.blog-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 13px;
  color: var(--blog-ink3);
  padding: 0 0 22px;
  margin: 0 0 24px;
  border-bottom: 1px solid var(--blog-line);
}
.blog-meta b { color: var(--blog-ink); font-weight: 600; }
.blog-meta .dot { opacity: 0.4; }

/* Author card */
.blog-byline {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border: 1px solid var(--blog-line);
  border-radius: 14px;
  background: linear-gradient(180deg, var(--blog-cream), #fff);
  margin: 0 0 28px;
}
.blog-byline .avatar {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}
.blog-byline .who {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--blog-ink);
}
.blog-byline .role {
  font-size: 13px;
  color: var(--blog-ink2);
  line-height: 1.5;
  margin-top: 3px;
}
.blog-byline .role a { color: var(--blog-cobalt); }

/* TOC */
.blog-toc {
  margin: 0 0 32px;
  padding: 16px 18px;
  border: 1px solid var(--blog-line);
  border-radius: 14px;
  background: #fff;
}
.blog-toc .label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blog-ink3);
  margin: 0 0 10px;
}
.blog-toc ol {
  margin: 0;
  padding: 0 0 0 1.15em;
}
.blog-toc li {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--blog-ink2);
}
.blog-toc a {
  color: var(--blog-ink2);
  text-decoration: none;
}
.blog-toc a:hover { color: var(--blog-cobalt); text-decoration: underline; }

/* Prose */
.blog-prose {
  font-size: 16px;
  line-height: 1.7;
  color: var(--blog-ink2);
}
.blog-prose > * + * { margin-top: 1em; }
.blog-prose h2 {
  font-family: var(--font-display, system-ui, sans-serif);
  font-weight: 600;
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: -0.022em;
  line-height: 1.18;
  color: var(--blog-ink);
  margin: 2.2em 0 0.55em;
  scroll-margin-top: 88px;
}
.blog-prose h3 {
  font-size: 17.5px;
  font-weight: 600;
  color: var(--blog-ink);
  margin: 1.6em 0 0.4em;
  scroll-margin-top: 88px;
}
.blog-prose p { margin: 0 0 1em; text-wrap: pretty; }
.blog-prose a {
  color: var(--blog-cobalt);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
.blog-prose ul,
.blog-prose ol {
  margin: 0 0 1.1em;
  padding-left: 1.3em;
}
.blog-prose li { margin: 0 0 0.45em; padding-left: 0.15em; }
.blog-prose li::marker { color: var(--blog-cobalt); }
.blog-prose strong { color: var(--blog-ink); font-weight: 600; }

.blog-prose blockquote {
  margin: 1.4em 0;
  padding: 16px 18px 16px 20px;
  border-left: 3px solid var(--blog-cobalt);
  background: #E4EBFF;
  border-radius: 0 12px 12px 0;
  color: var(--blog-ink);
  font-size: 15.5px;
  line-height: 1.55;
}
.blog-prose blockquote p { margin: 0; color: var(--blog-ink); }

.blog-callout {
  margin: 1.4em 0;
  padding: 16px 18px;
  border: 1px solid var(--blog-line);
  border-radius: 14px;
  background: var(--blog-cream);
}
.blog-callout .t {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blog-ink3);
  margin: 0 0 8px;
}
.blog-callout p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--blog-ink2);
}

.blog-table-wrap {
  overflow-x: auto;
  margin: 1.2em 0 1.4em;
  border: 1px solid var(--blog-line);
  border-radius: 14px;
  background: #fff;
  -webkit-overflow-scrolling: touch;
}
.blog-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 480px;
}
.blog-table th,
.blog-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--blog-line);
  vertical-align: top;
}
.blog-table th {
  background: var(--blog-cream);
  font-weight: 600;
  color: var(--blog-ink);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.blog-table tr:last-child td { border-bottom: 0; }
.blog-table tbody tr:hover td { background: #fafbfe; }

/* Bottom CTA */
.blog-cta {
  margin: 2.8em 0 0;
  padding: 28px 24px;
  border-radius: 18px;
  background:
    radial-gradient(600px 200px at 10% 0%, rgba(36, 71, 216, 0.35), transparent 60%),
    radial-gradient(400px 180px at 90% 100%, rgba(240, 100, 77, 0.25), transparent 55%),
    #10141F;
  color: #fff;
}
.blog-cta h2 {
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: clamp(20px, 2.5vw, 24px);
  margin: 0 0 8px;
  color: #fff;
  letter-spacing: -0.02em;
  font-weight: 600;
}
.blog-cta p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.78);
  max-width: 42ch;
}
.blog-cta .row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.blog-cta a.btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none !important;
}
.blog-cta a.btn-primary { background: var(--blog-coral); color: #fff; }
.blog-cta a.btn-primary:hover { background: #D84A34; }
.blog-cta a.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
}
.blog-cta a.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.5); }

.blog-related {
  margin-top: 2em;
  padding-top: 1.4em;
  border-top: 1px solid var(--blog-line);
}
.blog-related .label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blog-ink3);
  margin: 0 0 12px;
}
.blog-related-grid {
  display: grid;
  gap: 10px;
}
.blog-related a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--blog-line);
  border-radius: 12px;
  text-decoration: none;
  color: var(--blog-ink);
  font-weight: 500;
  font-size: 14.5px;
  background: #fff;
}
.blog-related a:hover {
  border-color: var(--blog-cobalt);
  color: var(--blog-cobalt);
}
.blog-related a span {
  display: block;
  font-weight: 400;
  font-size: 13px;
  color: var(--blog-ink3);
  margin-top: 3px;
}

/* —— Index —— */
.blog-index {
  max-width: var(--blog-wide);
  margin: 0 auto;
  padding: 48px 24px 96px;
}
.blog-index-hero {
  max-width: 640px;
  margin-bottom: 36px;
}
.blog-index-hero .blog-h1 { font-size: clamp(34px, 5vw, 48px); }
.blog-index-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}
.blog-card {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  padding: 22px 22px 20px;
  border: 1px solid var(--blog-line);
  border-radius: 16px;
  background: #fff;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
  min-height: 220px;
}
.blog-card:hover {
  border-color: #c5d0f5;
  box-shadow: 0 14px 40px -24px rgba(12, 19, 34, 0.35);
  transform: translateY(-2px);
  text-decoration: none;
}
.blog-card.featured {
  grid-column: span 8;
  background:
    radial-gradient(500px 200px at 100% 0%, rgba(36, 71, 216, 0.08), transparent 55%),
    linear-gradient(180deg, #fbfcff, #fff);
  min-height: 260px;
}
.blog-card .tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blog-cobalt);
  margin-bottom: 10px;
}
.blog-card h2 {
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 20px;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
  color: var(--blog-ink);
  line-height: 1.22;
  font-weight: 600;
}
.blog-card.featured h2 { font-size: clamp(22px, 2.5vw, 28px); }
.blog-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--blog-ink2);
  flex: 1;
}
.blog-card .meta {
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--blog-ink3);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
@media (max-width: 900px) {
  .blog-card,
  .blog-card.featured { grid-column: span 6; }
}
@media (max-width: 600px) {
  .blog-card,
  .blog-card.featured { grid-column: span 12; min-height: 0; }
  .blog-index { padding: 32px 18px 72px; }
}

/* Footer */
.blog-foot {
  border-top: 1px solid var(--blog-line);
  padding: 36px 24px 48px;
  background: #fff;
  font-size: 13.5px;
  color: var(--blog-ink2);
}
.blog-foot-inner {
  max-width: var(--blog-wide);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  justify-content: space-between;
  align-items: flex-start;
}
.blog-foot a {
  color: var(--blog-ink2);
  text-decoration: none;
  margin-right: 12px;
}
.blog-foot a:hover { color: var(--blog-cobalt); }
.blog-foot .brand-line {
  font-weight: 600;
  color: var(--blog-ink);
  margin-bottom: 4px;
}

/* Migrate steps (kept) */
.migrate-steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 1.2em 0 1.5em;
}
.migrate-steps li {
  position: relative;
  padding: 16px 16px 16px 56px;
  margin: 0 0 12px;
  border: 1px solid var(--blog-line);
  border-radius: 12px;
  background: #fff;
}
.migrate-steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 14px;
  top: 16px;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: #E4EBFF;
  color: var(--blog-cobalt);
  font-weight: 700;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.migrate-steps strong {
  display: block;
  color: var(--blog-ink);
  font-size: 15px;
  margin-bottom: 4px;
}
.migrate-steps span {
  font-size: 14px;
  line-height: 1.5;
  color: var(--blog-ink2);
}

/* Site map */
.sm-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 28px;
}
.sm-col h2 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 10px;
  color: var(--blog-ink);
}
.sm-col a {
  display: block;
  padding: 9px 0;
  font-size: 14px;
  color: var(--blog-ink2);
  text-decoration: none;
  border-bottom: 1px solid var(--blog-line);
}
.sm-col a:hover { color: var(--blog-cobalt); }