/* ═══════════════════════════════════════════════════════════════
   AK-DataGeek Blog — shared stylesheet for all blog pages
   Inherits design tokens from main site
   ═══════════════════════════════════════════════════════════════ */

:root {
  --ink: #0a0a0a;
  --paper: #f4f1ea;
  --paper-warm: #ede8db;
  --paper-deep: #e2dccd;
  --rule: #1a1a1a;
  --accent: #c8392c;
  --accent-deep: #7a1f15;
  --accent-soft: #e8b5af;
  --muted: #5a5a5a;
  --muted-2: #8a8580;
  --highlight: #f7d046;
  --grid: rgba(10, 10, 10, 0.05);
  --terminal: #0d0d0d;
  --terminal-text: #e8e3d4;
  --terminal-green: #87b774;
  --code-bg: #f0ebde;
  --code-border: rgba(10, 10, 10, 0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-feature-settings: 'ss01', 'ss02', 'cv11'; }

body {
  font-family: 'Inter Tight', -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--paper); }

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
  opacity: 0.04;
  mix-blend-mode: multiply;
}

.container { max-width: 1320px; margin: 0 auto; padding: 0 56px; }
.article-container { max-width: 760px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 24px; } }

/* === NAV === */
nav {
  padding: 24px 0;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--ink); }
.logo-mark {
  width: 36px; height: 36px;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px; font-weight: 700; border-radius: 3px;
  position: relative; overflow: hidden;
}
.logo-mark::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 50%, var(--accent) 50%);
  opacity: 0.15;
}
.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-name {
  font-family: 'Fraunces', serif; font-weight: 900;
  font-size: 19px; letter-spacing: -0.02em;
}
.logo-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); margin-top: 4px;
}

.nav-links {
  display: flex; gap: 32px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
}
.nav-links a {
  color: var(--ink); text-decoration: none;
  border-bottom: 1px solid transparent; padding-bottom: 4px;
  transition: border-color 0.2s;
}
.nav-links a:hover { border-bottom-color: var(--accent); }
.nav-links a.active { border-bottom-color: var(--accent); color: var(--accent-deep); }

.nav-cta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 10px 20px; background: var(--ink); color: var(--paper);
  text-decoration: none; border: 1px solid var(--ink); transition: all 0.2s;
}
.nav-cta:hover { background: var(--accent-deep); border-color: var(--accent-deep); }

@media (max-width: 900px) { .nav-links, .nav-cta { display: none; } }

/* === BREADCRUMB === */
.breadcrumb {
  padding: 32px 0 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted);
}
.breadcrumb a {
  color: var(--muted); text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--accent-deep); }
.breadcrumb span { margin: 0 12px; opacity: 0.5; }
.breadcrumb .current { color: var(--ink); }

/* === BLOG INDEX HERO === */
.blog-hero {
  padding: 64px 0 80px;
  border-bottom: 2px solid var(--ink);
}
.blog-hero h1 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(48px, 6vw, 80px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 900px;
}
.blog-hero h1 em {
  font-style: italic; font-weight: 400; color: var(--accent-deep);
}
.blog-hero p {
  font-family: 'Fraunces', serif;
  font-size: 22px;
  line-height: 1.45;
  max-width: 720px;
  color: var(--muted);
}

/* === BLOG INDEX LIST === */
.blog-list { padding: 80px 0; }
.blog-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 56px;
  padding: 40px 0;
  border-bottom: 1px solid var(--ink);
  text-decoration: none;
  color: var(--ink);
  transition: all 0.3s ease;
  align-items: start;
}
.blog-card:first-child { border-top: 1px solid var(--ink); }
.blog-card:hover { padding-left: 16px; padding-right: 0; }
.blog-card:hover .blog-card-arrow { transform: translateX(8px); color: var(--accent); }
@media (max-width: 768px) {
  .blog-card { grid-template-columns: 1fr; gap: 16px; }
}

.blog-card-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted);
  display: flex; flex-direction: column; gap: 6px;
}
.blog-card-date { color: var(--accent); font-weight: 600; }
.blog-card-readtime { color: var(--muted-2); }
.blog-card-content { display: flex; flex-direction: column; gap: 12px; }
.blog-card-category {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent-deep);
  font-weight: 600;
}
.blog-card-title {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.blog-card-excerpt {
  font-family: 'Fraunces', serif;
  font-size: 18px; line-height: 1.5;
  color: var(--muted); font-weight: 400;
  max-width: 640px;
}
.blog-card-tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px;
}
.blog-card-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 4px 10px; background: var(--paper-deep);
  border: 1px solid var(--code-border); color: var(--ink);
}
.blog-card-arrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px; transition: all 0.3s ease;
  color: var(--ink); margin-top: 8px;
  display: inline-block;
}

/* === ARTICLE PAGE === */
.article-hero {
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--ink);
  background: var(--paper-warm);
}
.article-meta {
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 32px;
}
.article-meta .date { color: var(--accent); font-weight: 600; }
.article-meta .separator { opacity: 0.4; }
.article-category {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 6px 12px;
  background: var(--accent-deep); color: var(--paper);
  font-weight: 600;
  margin-bottom: 32px;
}
.article-title {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: clamp(40px, 5.5vw, 72px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
  max-width: 900px;
}
.article-title em { font-style: italic; color: var(--accent-deep); }
.article-lede {
  font-family: 'Fraunces', serif;
  font-size: 22px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 720px;
  font-weight: 400;
}

/* === ARTICLE BODY === */
.article-body {
  padding: 64px 0 80px;
}
.article-body h2 {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 56px 0 20px;
  color: var(--ink);
}
.article-body h2:first-child { margin-top: 0; }
.article-body h2 em { color: var(--accent-deep); font-style: italic; }
.article-body h3 {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 24px;
  line-height: 1.2;
  margin: 40px 0 16px;
  color: var(--ink);
}
.article-body p {
  margin-bottom: 24px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink);
}
.article-body p strong {
  font-weight: 600;
  background: linear-gradient(transparent 65%, var(--accent-soft) 65%);
  padding: 0 2px;
}
.article-body p em { font-style: italic; color: var(--muted); }
.article-body ul, .article-body ol {
  margin: 0 0 24px 24px;
  font-size: 18px;
  line-height: 1.65;
}
.article-body li { margin-bottom: 12px; }
.article-body li::marker { color: var(--accent); }
.article-body a {
  color: var(--accent-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  font-weight: 500;
}
.article-body a:hover {
  background: var(--accent-soft);
  text-decoration-thickness: 2px;
}

/* Pull quote */
.pull-quote {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 28px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--accent-deep);
  border-left: 4px solid var(--accent);
  padding: 24px 0 24px 32px;
  margin: 48px 0;
  font-weight: 400;
}

/* Code blocks */
.article-body pre {
  background: var(--terminal);
  color: var(--terminal-text);
  padding: 24px 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.6;
  border: 1px solid var(--ink);
  border-radius: 4px;
  overflow-x: auto;
  margin: 32px 0;
}
.article-body pre .comment { color: var(--muted-2); font-style: italic; }
.article-body pre .keyword { color: var(--accent-soft); font-weight: 600; }
.article-body pre .string { color: var(--terminal-green); }

.article-body code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  background: var(--code-bg);
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--code-border);
  color: var(--ink);
}
.article-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--terminal-text);
  font-size: 13px;
}

/* Callout box */
.callout {
  background: var(--paper-warm);
  border-left: 4px solid var(--accent);
  padding: 24px 28px;
  margin: 32px 0;
  font-size: 16px;
  line-height: 1.6;
}
.callout-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent); font-weight: 700;
  margin-bottom: 8px;
}
.callout p { margin: 0; font-size: 16px; }

/* Diagram (ASCII / SVG) */
.diagram {
  background: var(--paper-warm);
  border: 1px solid var(--ink);
  padding: 32px;
  margin: 32px 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre;
  overflow-x: auto;
}

/* Table */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 15px;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}
.article-body table th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  text-align: left;
  padding: 14px 12px;
  border-bottom: 1px solid var(--ink);
  background: var(--paper-warm);
  font-weight: 600;
}
.article-body table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--code-border);
  vertical-align: top;
}
.article-body table tr:last-child td { border-bottom: none; }

/* Section divider */
.section-divider {
  display: flex; align-items: center; justify-content: center;
  margin: 64px 0 56px;
  gap: 16px;
}
.section-divider::before, .section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--code-border);
}
.section-divider span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  color: var(--accent);
}

/* === ARTICLE FOOTER (related posts + CTA) === */
.article-footer {
  background: var(--paper-warm);
  border-top: 2px solid var(--ink);
  padding: 80px 0;
}
.related-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 24px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}
@media (max-width: 768px) { .related-grid { grid-template-columns: 1fr; } }

.related-card {
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 28px;
  text-decoration: none;
  color: var(--ink);
  transition: all 0.3s;
}
.related-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0 var(--ink);
}
.related-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); font-weight: 600;
  margin-bottom: 12px;
}
.related-title {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* CTA in article footer */
.cta-box {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 48px;
  text-align: center;
}
.cta-box h3 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.cta-box h3 em { color: var(--accent-soft); font-style: italic; }
.cta-box p {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  margin-bottom: 28px;
  color: var(--paper);
  opacity: 0.85;
}
.cta-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  font-weight: 500;
  padding: 16px 28px;
  border: 1px solid var(--paper);
  background: var(--paper); color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center; gap: 12px;
  transition: all 0.2s;
}
.cta-btn:hover {
  background: var(--accent); color: var(--paper);
  border-color: var(--accent);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--paper);
}

/* === FOOTER === */
footer {
  background: var(--ink);
  color: var(--paper);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 56px;
}
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }
.footer-col h5 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent-soft); margin-bottom: 16px;
}
.footer-col p, .footer-col a {
  font-size: 14px; line-height: 1.7; color: var(--paper);
  text-decoration: none; display: block;
}
.footer-col a:hover { color: var(--accent-soft); }
.footer-bottom {
  border-top: 1px solid rgba(244, 241, 234, 0.2);
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.06em; color: var(--muted-2); text-transform: uppercase;
}
@media (max-width: 768px) { .footer-bottom { flex-direction: column; gap: 12px; } }