/* ──────────────────────────────────────────────────────────
   BLOG — page-specific styles (layout, TOC, article, CTA, index).
   Tokens come from tokens.css; nav/footer/reset from base.css.
   ────────────────────────────────────────────────────────── */

/* Blog pages have a light top, so the nav must be solid from the
   start (the LP relies on the .scrolled state over its dark hero). */
body.blog #nav {
  background: rgba(10,10,10,0.9);
  border-bottom: 1px solid var(--rule-dark);
  backdrop-filter: blur(12px);
}

/* ── BLOG LAYOUT ── */
.blog-main {
  padding-top: 64px; /* nav height offset */
  min-height: 100vh;
}

.blog-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px clamp(24px, 5vw, 64px) 96px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  align-items: start;
}

@media (max-width: 900px) {
  .blog-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ── TOC ── */
.blog-toc {
  position: sticky;
  top: 88px; /* nav + some breathing room */
  align-self: start;
}

.blog-toc-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gray-5);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule-soft);
}

.blog-toc nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.blog-toc nav a {
  font-size: 13px;
  font-weight: 400;
  color: var(--gray-5);
  line-height: 1.4;
  transition: color 0.2s;
  padding: 3px 0;
}
.blog-toc nav a:hover { color: var(--ink); }
.blog-toc nav a.toc-3 {
  padding-left: 12px;
  font-size: 12px;
}

@media (max-width: 900px) {
  .blog-toc { display: none; }
}

/* ── ARTICLE HEADER ── */
.blog-post-header {
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule-soft);
}

.blog-post-header .blog-section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gray-5);
  display: inline-block;
  margin-bottom: 20px;
}

.blog-post-header h1 {
  font-family: var(--font-sans);
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 20px;
}

.blog-post-header h1 em {
  font-style: italic;
  font-family: var(--font-serif);
  font-weight: 400;
}

.blog-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gray-5);
  margin-bottom: 20px;
}

.blog-lead {
  font-size: 17px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--gray-6);
  max-width: 60ch;
}

/* ── ARTICLE CONTENT ── */
.blog-content {
  font-size: 16px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--ink);
}

.blog-content p {
  margin-bottom: 24px;
  max-width: 70ch;
}

.blog-content h2 {
  font-family: var(--font-sans);
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 56px 0 20px;
  padding-top: 8px;
  scroll-margin-top: 88px;
}

.blog-content h3 {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 40px 0 16px;
  scroll-margin-top: 88px;
}

.blog-content h2:first-child,
.blog-content h3:first-child {
  margin-top: 0;
}

.blog-content strong {
  font-weight: 500;
  color: var(--ink);
}

.blog-content em {
  font-style: italic;
  font-family: var(--font-serif);
}

.blog-content a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--gray-3);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}
.blog-content a:hover {
  text-decoration-color: var(--ink);
}

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

.blog-content li {
  margin-bottom: 10px;
  max-width: 68ch;
  line-height: 1.65;
}

.blog-content hr {
  border: none;
  border-top: 1px solid var(--rule-soft);
  margin: 48px 0;
}

/* Blockquote — no side stripe (anti-pattern) */
.blog-content blockquote {
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
  padding: 24px 0;
  margin: 32px 0;
  color: var(--gray-6);
  font-size: 15px;
  font-style: italic;
  font-family: var(--font-serif);
}

/* Tables — data aesthetic */
.blog-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 13px;
}

/* Mobile: card layout — each row becomes a stacked card */
@media (max-width: 640px) {
  .blog-content table {
    display: block;
    overflow-x: visible;
    margin: 24px 0;
  }

  .blog-content table thead {
    display: none;
  }

  .blog-content table tbody {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .blog-content table tr {
    display: block;
    border: 1px solid var(--rule-soft);
    border-radius: 2px;
    padding: 14px 16px;
    background: var(--paper);
  }

  .blog-content tbody tr:nth-child(odd) {
    background: var(--paper);
  }

  .blog-content table td {
    display: block;
    padding: 0;
    border-bottom: none;
    white-space: normal;
    font-size: 13px;
    line-height: 1.5;
    color: var(--gray-6);
  }

  .blog-content table td:first-child {
    font-weight: 500;
    font-size: 14px;
    color: var(--ink);
    padding-bottom: 10px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--rule-soft);
    white-space: normal;
  }

  .blog-content table td[data-label] {
    display: flex;
    gap: 10px;
    align-items: baseline;
    padding: 3px 0;
  }

  .blog-content table td[data-label]::before {
    content: attr(data-label);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-5);
    min-width: 72px;
    flex-shrink: 0;
    padding-top: 1px;
  }
}

.blog-content thead th {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-5);
  text-align: left;
  padding: 10px 16px;
  border-bottom: 1px solid var(--rule-soft);
}

.blog-content tbody tr:nth-child(odd) {
  background: var(--paper-2);
}

.blog-content tbody td {
  padding: 12px 16px;
  color: var(--gray-6);
  vertical-align: top;
  line-height: 1.5;
  border-bottom: 1px solid var(--rule-soft);
}

.blog-content tbody td:first-child {
  color: var(--ink);
  font-weight: 400;
  white-space: nowrap;
}

/* Inline code */
.blog-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--paper-2);
  padding: 2px 6px;
  border-radius: 2px;
  color: var(--ink);
}

/* ── CTA BLOCK ── */
.blog-cta {
  margin-top: 64px;
  padding: 48px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 2px;
}

.blog-cta-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gray-5);
  margin-bottom: 16px;
}

.blog-cta-heading {
  font-family: var(--font-sans);
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin-bottom: 12px;
}

.blog-cta-heading em {
  font-style: italic;
  font-family: var(--font-serif);
}

.blog-cta-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--gray-5);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 52ch;
}

.blog-cta-btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
  padding: 12px 24px;
  border: 1px solid var(--gray-5);
  transition: border-color 0.2s;
}
.blog-cta-btn:hover {
  border-color: var(--paper);
}

/* ── BLOG INDEX PAGE ── */
.blog-index-section {
  padding: 96px clamp(24px, 5vw, 64px) 96px;
  max-width: 1100px;
  margin: 0 auto;
  padding-top: calc(64px + 64px);
}

.blog-index-header {
  margin-bottom: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--rule-soft);
}

.blog-index-header h1 {
  font-family: var(--font-sans);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-top: 16px;
}

.blog-index-header h1 em {
  font-style: italic;
  font-family: var(--font-serif);
  font-weight: 300;
}

.blog-posts-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-card {
  padding: 40px 0;
  border-bottom: 1px solid var(--rule-soft);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  align-items: start;
}

.post-card:first-child {
  border-top: 1px solid var(--rule-soft);
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-5);
  padding-top: 6px;
}

.post-card-content h2 {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 10px;
  transition: opacity 0.2s;
}

.blog-posts-grid:hover .post-card:not(:hover) .post-card-content h2 {
  opacity: 0.45;
}

.post-card-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--gray-6);
  line-height: 1.6;
  margin-bottom: 16px;
  max-width: 60ch;
}

.post-card-link {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-5);
  transition: color 0.2s;
}
.post-card-link:hover { color: var(--ink); }

.post-card-full-link {
  position: absolute;
  inset: 0;
}

.post-card {
  position: relative;
}

@media (max-width: 640px) {
  .post-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}