/* Shared blog styles — extends Xzidian Signal visual language */
:root {
  --bg:          #FAFAF7;
  --bg-deep:     #F2F1EC;
  --bg-elev:     #FFFFFF;
  --accent:      #E85C3A;
  --accent-soft: #F07558;
  --text-light:  #FAFAF7;
  --text-dark:   #0A0A0A;
  --text-muted:  #6B6B68;
  --surf-card:   #FFFFFF;
  --line-ink:    rgba(15,26,61,0.12);
  --line-accent: #E85C3A3D;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text-dark);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.page { max-width: 1320px; margin: 0 auto; padding: 0 56px; }
@media (max-width: 800px) { .page { padding: 0 22px; } }

.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* Announcement */
.annc {
  background: var(--text-dark);
  color: var(--text-light);
  text-align: center;
  padding: 12px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--accent);
}
.annc span { color: var(--accent); }

/* Nav */
.nav-wrap {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,247,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(10,10,10,0.1);
}
nav { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.logo-link { display: flex; align-items: center; gap: 14px; text-decoration: none; color: inherit; }
.logo-mark { width: 34px; height: 34px; color: var(--accent); }
.logo-text {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--text-dark);
}
.logo-text em {
  display: block;
  font-size: 9px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.22em;
  font-style: normal;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 4px;
  font-weight: 500;
}
.nav-links { display: flex; align-items: center; gap: 38px; list-style: none; }
.nav-links a {
  color: rgba(10,10,10,0.82);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.cta-btn {
  background: var(--accent);
  color: var(--text-light);
  border: none;
  padding: 12px 24px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.04em;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}
.cta-btn:hover { background: var(--accent-soft); transform: translateY(-1px); }
.cta-btn.outline {
  background: transparent;
  color: var(--text-dark);
  border: 1px solid rgba(10,10,10,0.3);
}
.cta-btn.outline:hover { background: var(--text-dark); color: var(--text-light); }
@media (max-width: 800px) { .nav-links { display: none; } }

/* Footer */
footer { background: var(--text-dark); color: var(--bg); padding: 80px 0 32px; }
.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(250,250,247,0.15);
}
@media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
.foot-brand {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 26px;
  letter-spacing: -0.01em;
  color: var(--accent);
  margin-bottom: 16px;
}
.foot-desc { font-size: 14px; color: rgba(250,250,247,0.65); line-height: 1.6; max-width: 38ch; }
.foot-col h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.foot-col a { color: rgba(250,250,247,0.75); text-decoration: none; font-size: 13px; transition: color 0.2s; }
.foot-col a:hover { color: var(--bg); }
.foot-base {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(250,250,247,0.5);
  flex-wrap: wrap;
  gap: 12px;
}

/* ───────── Blog index ───────── */
.blog-head {
  padding: 100px 0 60px;
  border-bottom: 1px solid var(--line-ink);
  position: relative;
}
.blog-head::after {
  content: "";
  position: absolute;
  top: -10%; right: -5%;
  width: 50vw; height: 120%;
  background: radial-gradient(ellipse at center, rgba(232,92,58,0.10), transparent 60%);
  pointer-events: none;
}
.blog-head-inner { position: relative; z-index: 1; max-width: 920px; }
.blog-eyebrow {
  color: var(--accent);
  margin-bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.blog-eyebrow::before { content: ""; width: 40px; height: 1px; background: var(--accent); }
.blog-head h1 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}
.blog-head h1 em { font-style: italic; color: var(--accent); font-weight: 600; font-family: 'Fraunces', serif; }
.blog-head p {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 300;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.5;
  color: rgba(10,10,10,0.72);
  max-width: 640px;
}

/* Filters */
.filters {
  padding: 28px 0;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line-ink);
  position: sticky;
  top: 73px;
  z-index: 30;
  background: rgba(250,250,247,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.filter-pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--line-ink);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.18s;
  font-weight: 500;
}
.filter-pill:hover { border-color: var(--accent); color: var(--accent); }
.filter-pill.active {
  background: var(--text-dark);
  border-color: var(--text-dark);
  color: var(--bg);
}

/* Featured */
.featured {
  padding: 72px 0 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 900px) { .featured { grid-template-columns: 1fr; gap: 32px; padding: 48px 0; } }
.featured-art {
  aspect-ratio: 4 / 3;
  background: var(--text-dark);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-ink);
}
.featured-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, rgba(232,92,58,0.18) 0 1px, transparent 1px 24px),
    radial-gradient(ellipse at 30% 30%, rgba(232,92,58,0.30), transparent 60%);
}
.featured-art-glyph {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--accent);
  opacity: 0.85;
}
.featured-art-glyph svg { width: 38%; }
.featured-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}
.featured-meta .pill {
  padding: 4px 10px;
  border: 1px solid var(--accent);
  color: var(--accent);
}
.featured-meta .sep { color: var(--text-muted); }
.featured h2 {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}
.featured h2 a { color: var(--text-dark); text-decoration: none; transition: color 0.2s; }
.featured h2 a:hover { color: var(--accent); }
.featured-dek {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 300;
  font-size: 19px;
  line-height: 1.55;
  color: rgba(10,10,10,0.72);
  margin-bottom: 32px;
  max-width: 52ch;
}
.featured-byline {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-muted);
}
.author-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--text-dark);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}
.featured-byline strong { color: var(--text-dark); font-weight: 600; }

/* Post list */
.post-list {
  padding: 32px 0 120px;
  border-top: 1px solid var(--line-ink);
}
.post-list-head {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 32px 0 24px;
}
.post-list-head h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.01em;
}
.post-list-head .mono { color: var(--text-muted); }
.post-row {
  display: grid;
  grid-template-columns: 100px 1fr 200px 100px;
  gap: 32px;
  padding: 32px 0;
  border-top: 1px solid var(--line-ink);
  align-items: center;
  transition: padding 0.2s, background 0.2s;
  text-decoration: none;
  color: inherit;
}
.post-row:hover { padding-left: 12px; background: rgba(232,92,58,0.04); }
.post-row-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}
.post-row-title {
  font-family: 'Inter', sans-serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.post-row:hover .post-row-title { color: var(--accent); }
.post-row-dek {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 56ch;
}
.post-row-cat {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}
.post-row-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: right;
}
@media (max-width: 800px) {
  .post-row { grid-template-columns: 1fr; gap: 8px; padding: 24px 0; }
  .post-row-time { text-align: left; }
}

.post-row.hidden { display: none; }

/* ───────── Post page ───────── */
.post-hero {
  padding: 100px 0 60px;
  border-bottom: 1px solid var(--line-ink);
  position: relative;
}
.post-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 0%, rgba(232,92,58,0.08), transparent 55%);
  pointer-events: none;
}
.post-hero-inner { position: relative; z-index: 1; max-width: 880px; }
.crumbs {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.crumbs a { color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { margin: 0 10px; color: var(--accent); }
.post-cat {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.post-hero h1 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1;
  letter-spacing: -0.025em;
  margin-bottom: 28px;
}
.post-hero h1 em { font-style: italic; color: var(--accent); font-weight: 500; font-family: 'Fraunces', serif; }
.post-dek {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 300;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.55;
  color: rgba(10,10,10,0.72);
  margin-bottom: 40px;
  max-width: 640px;
}
.post-byline {
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--line-ink);
}
.post-byline-author { display: flex; align-items: center; gap: 14px; }
.post-byline strong { font-weight: 600; font-size: 14px; }
.post-byline .role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 3px;
}
.post-byline-meta {
  display: flex; gap: 24px; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.post-byline-meta strong { color: var(--text-dark); font-weight: 500; }

/* Article body */
.post-body-wrap {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  padding: 72px 0 96px;
}
@media (max-width: 1000px) {
  .post-body-wrap { grid-template-columns: 1fr; gap: 32px; }
  .toc-wrap { display: none; }
}
.toc-wrap { position: sticky; top: 100px; align-self: start; }
.toc-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-ink);
}
.toc { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.toc a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.2s;
  padding-left: 12px;
  border-left: 2px solid transparent;
  display: block;
}
.toc a:hover, .toc a.active { color: var(--accent); border-left-color: var(--accent); }

.post-body {
  max-width: 720px;
  font-size: 18px;
  line-height: 1.7;
  color: rgba(10,10,10,0.85);
}
.post-body h2 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 30px;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 56px 0 20px;
  color: var(--text-dark);
  scroll-margin-top: 100px;
}
.post-body h2:first-child { margin-top: 0; }
.post-body h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 36px 0 14px;
  color: var(--text-dark);
}
.post-body p { margin-bottom: 22px; }
.post-body p strong { font-weight: 600; color: var(--text-dark); }
.post-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.post-body ul, .post-body ol { margin: 0 0 22px 22px; }
.post-body li { margin-bottom: 8px; }

.callout {
  margin: 32px 0;
  padding: 24px 28px;
  background: var(--bg-deep);
  border-left: 3px solid var(--accent);
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 19px;
  line-height: 1.5;
  color: rgba(10,10,10,0.82);
}
.callout::before {
  content: "Note —";
  font-family: 'JetBrains Mono', monospace;
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.pullquote {
  margin: 48px -32px;
  padding: 0 32px;
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 28px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text-dark);
  border-left: 3px solid var(--accent);
}
.pullquote::before { content: "\201C"; color: var(--accent); }
.pullquote::after { content: "\201D"; color: var(--accent); }

pre, code { font-family: 'JetBrains Mono', monospace; }
.post-body code {
  background: var(--bg-deep);
  padding: 2px 6px;
  font-size: 0.86em;
  border: 1px solid var(--line-ink);
  color: var(--text-dark);
}
.post-body pre {
  background: var(--text-dark);
  color: var(--bg);
  padding: 24px 28px;
  border-left: 3px solid var(--accent);
  margin: 32px 0;
  font-size: 13.5px;
  line-height: 1.7;
  overflow-x: auto;
}
.post-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}
.post-body pre .k { color: var(--accent-soft); }
.post-body pre .s { color: #b6e8c4; }
.post-body pre .c { color: rgba(250,250,247,0.45); font-style: italic; }

/* Author bio */
.author-bio {
  margin-top: 80px;
  padding: 36px;
  background: var(--surf-card);
  border: 1px solid var(--line-ink);
  border-top: 3px solid var(--accent);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: start;
}
@media (max-width: 600px) { .author-bio { grid-template-columns: 1fr; } }
.author-bio .author-avatar { width: 56px; height: 56px; font-size: 14px; }
.author-bio-name {
  font-family: 'Inter', sans-serif;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.author-bio-role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.author-bio-text {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 56ch;
}

/* Related */
.related {
  background: var(--text-dark);
  color: var(--bg);
  padding: 80px 0;
}
.related h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 32px;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}
.related h3 em { font-style: italic; color: var(--accent); font-family: 'Fraunces', serif; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.14);
}
@media (max-width: 800px) { .related-grid { grid-template-columns: 1fr; } }
.related-card {
  background: var(--text-dark);
  padding: 32px;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.related-card:hover { background: rgba(232,92,58,0.06); }
.related-card-cat {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.related-card-title {
  font-family: 'Inter', sans-serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--bg);
}
.related-card-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.5);
  margin-top: auto;
}

/* Reveal */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }