/* ─────────────────────────────────────────────────────────────
   LudLLM project pages — shared stylesheet
   Reuses the sandip.dev design system (tokens, header, footer,
   palette switcher) and adds a long-form article layer plus a
   few project-specific components.
   ───────────────────────────────────────────────────────────── */

/* Default theme: Cool Fog (Linear-ish, Swiss-modern) */
:root, [data-theme="fog"] {
  --paper: #F6F6F7;
  --paper-2: #EFEFF1;
  --ink: #0A0A0B;
  --ink-soft: #4A4A52;
  --ink-softer: #8A8A92;
  --rule: #E2E2E5;
  --rule-soft: #ECECEF;
  --accent: #1F4DDA;
  --accent-soft: rgba(31, 77, 218, 0.08);
  --highlight: #F2D75A;
}
[data-theme="white"] {
  --paper: #FFFFFF;
  --paper-2: #FAFAFA;
  --ink: #000000;
  --ink-soft: #525252;
  --ink-softer: #8F8F8F;
  --rule: #EAEAEA;
  --rule-soft: #F2F2F2;
  --accent: #000000;
  --accent-soft: rgba(0, 0, 0, 0.05);
  --highlight: #FFE662;
}
[data-theme="paper"] {
  --paper: #F4F1E8;
  --paper-2: #ECE7D7;
  --ink: #161513;
  --ink-soft: #5C5A52;
  --ink-softer: #8E8B7F;
  --rule: #D8D2BF;
  --rule-soft: #E5E0CE;
  --accent: #B5462A;
  --accent-soft: rgba(181, 70, 42, 0.08);
  --highlight: #F2D75A;
}
[data-theme="ink"] {
  --paper: #0E0E10;
  --paper-2: #16161A;
  --ink: #F2F2F4;
  --ink-soft: #9A9AA3;
  --ink-softer: #5E5E66;
  --rule: #2A2A30;
  --rule-soft: #1F1F24;
  --accent: #E07650;
  --accent-soft: rgba(224, 118, 80, 0.12);
  --highlight: #E0B84F;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'ss01', 'cv11';
  overflow-x: hidden;
}
[data-theme="paper"] body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: radial-gradient(rgba(0,0,0,0.025) 1px, transparent 1px);
  background-size: 3px 3px;
  pointer-events: none;
  z-index: 1;
  opacity: 0.6;
}

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }
.serif { font-family: 'Fraunces', Georgia, serif; font-feature-settings: 'ss01'; }
a { color: inherit; text-decoration: none; }

/* ─── Header ───────────────────────────── */
header.site {
  position: sticky; top: 0; z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}
.logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.logo-mark {
  width: 28px; height: 28px;
  background: url('/logo-mark.png') no-repeat center / contain;
}
[data-theme="ink"] .logo-mark { background-image: url('/logo-mark-white.png'); }
nav.primary { display: flex; gap: 4px; justify-content: center; }
nav.primary a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  padding: 8px 14px;
  color: var(--ink-soft);
  transition: color 0.15s;
  position: relative;
}
nav.primary a:hover { color: var(--ink); }
nav.primary a.active { color: var(--ink); }
nav.primary a.active::before { content: '·'; color: var(--accent); margin-right: 4px; }
.header-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--ink-softer);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.status-dot {
  width: 6px; height: 6px;
  background: #6B9F4D;
  border-radius: 50%;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* ─── Page frame ───────────────────────── */
main { position: relative; z-index: 2; }
.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  animation: fadeIn 0.4s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Section label ────────────────────── */
.label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-softer);
  display: flex;
  align-items: center;
  gap: 10px;
}
.label::before { content: ''; width: 24px; height: 1px; background: var(--ink-softer); }
.label.no-rule::before { display: none; }

/* ─── Breadcrumb ───────────────────────── */
.crumb {
  padding-top: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--ink-softer);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.crumb a {
  color: var(--ink-soft);
  border-bottom: 1px dotted transparent;
  transition: color 0.15s, border-color 0.15s;
  padding-bottom: 1px;
}
.crumb a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.crumb .sep { color: var(--ink-softer); opacity: 0.6; }
.crumb .here { color: var(--ink); }

/* ─── Project hero ─────────────────────── */
.lud-hero {
  padding-top: 36px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  align-items: end;
}
.lud-hero h1 {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(44px, 6vw, 80px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  margin-top: 16px;
}
.lud-hero h1 em {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 500;
  color: var(--accent);
}
.lud-hero .lead {
  margin-top: 24px;
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 560px;
}
.lud-hero .lead strong { color: var(--ink); font-weight: 600; }
.lud-hero-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

/* book cover */
.cover {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 2 / 3;
  background: var(--paper-2);
  box-shadow: 0 1px 2px rgba(0,0,0,0.10), 0 16px 40px rgba(0,0,0,0.16);
  overflow: hidden;
  border: 1px solid var(--rule);
  transition: transform 0.4s cubic-bezier(.2,.8,.2,1);
}
.cover:hover { transform: translateY(-3px) scale(1.01); }
.cover img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ─── Sub-nav (Overview / Novels / Write-up) ─── */
.subnav {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0;
}
.subnav a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.03em;
  text-transform: lowercase;
  color: var(--ink-soft);
  padding: 10px 14px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
}
.subnav a:hover { color: var(--ink); }
.subnav a.active { color: var(--ink); border-bottom-color: var(--accent); }

/* ─── Buttons / CTAs ───────────────────── */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  background: var(--ink);
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.15s;
}
.download-btn:hover { background: var(--accent); }
.download-btn .arrow { font-size: 14px; }

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.cta-link:hover { color: var(--accent); border-color: var(--accent); }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* small link buttons used in version cards */
.minilink {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
  text-transform: lowercase;
  border-bottom: 1px dotted var(--ink-softer);
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}
.minilink:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ─── Article / long-form prose ────────── */
.article {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
  padding-bottom: 40px;
}
.article-rail { position: sticky; top: 96px; }
.article-rail .rail-note {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
}
.article-rail .rail-note a {
  color: var(--ink-soft);
  border-bottom: 1px dotted var(--ink-softer);
  transition: color 0.15s, border-color 0.15s;
}
.article-rail .rail-note a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.prose { max-width: 680px; }
.prose > p {
  font-size: 17px;
  line-height: 1.68;
  margin-bottom: 22px;
  color: var(--ink);
}
.prose > p:first-of-type { margin-top: 0; }
.prose .lede {
  font-size: 20px;
  line-height: 1.6;
  color: var(--ink);
}
.prose h2 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 27px;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 56px 0 18px;
  padding-top: 8px;
}
.prose h2 em, .prose h3 em {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 500;
  color: var(--accent);
}
.prose h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 40px 0 14px;
}
.prose h2 + p, .prose h3 + p { margin-top: 0; }
.prose strong { font-weight: 600; color: var(--ink); }
.prose em { font-style: italic; }
.prose a.tlink {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  text-underline-offset: 3px;
  transition: color 0.15s, border-color 0.15s;
}
.prose a.tlink:hover { color: var(--accent); border-bottom-color: var(--accent); }
.prose ul, .prose ol { margin: 0 0 22px; padding-left: 0; list-style: none; }
.prose ul li, .prose ol li {
  font-size: 17px;
  line-height: 1.6;
  margin-bottom: 12px;
  padding-left: 26px;
  position: relative;
  color: var(--ink);
}
.prose ul li::before {
  content: '';
  position: absolute;
  left: 2px; top: 12px;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.prose ol { counter-reset: li; }
.prose ol li { counter-increment: li; }
.prose ol li::before {
  content: counter(li);
  position: absolute;
  left: 0; top: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}
.prose code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.86em;
  background: var(--paper-2);
  padding: 1px 6px;
  color: var(--ink);
}

/* lead-in callout (used on the novels page) */
.prose blockquote {
  border-left: 2px solid var(--accent);
  background: var(--paper-2);
  padding: 18px 24px;
  margin: 0 0 24px;
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink);
}

/* ─── Tables ───────────────────────────── */
.table-wrap {
  margin: 8px 0 28px;
  overflow-x: auto;
  border: 1px solid var(--rule);
}
table.lud {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 540px;
}
table.lud th, table.lud td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.5;
}
table.lud thead th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-softer);
  background: var(--paper-2);
  font-weight: 500;
  white-space: nowrap;
}
table.lud tbody tr:last-child td { border-bottom: none; }
table.lud tbody tr:hover { background: var(--accent-soft); }
table.lud td strong, table.lud th strong { color: var(--ink); font-weight: 600; }
table.lud code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
  background: var(--paper-2);
  padding: 1px 5px;
}

/* ─── Figures ──────────────────────────── */
figure.lud {
  margin: 32px 0;
}
figure.lud img {
  width: 100%;
  display: block;
  border: 1px solid var(--rule);
  background: var(--paper-2);
}
figure.lud figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-softer);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.01em;
}
figure.lud.diagram img { padding: 8px; }

/* ─── Version cards (novels page) ──────── */
.versions {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.vcard {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.vcard .vtag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-softer);
}
.vcard h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.02em;
}
.vcard .vlog {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink-soft);
}
.vcard .vmeta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--ink-softer);
  text-transform: lowercase;
}
.vcard .vlinks { margin-top: auto; display: flex; flex-wrap: wrap; gap: 16px; padding-top: 6px; }

/* ─── Plot synopsis + spoiler toggle ───── */
.synopsis { margin-top: 24px; }
.synopsis .syn-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: end;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 18px;
}
.synopsis .syn-head h2 {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(32px, 4vw, 46px);
  letter-spacing: -0.03em;
  line-height: 1;
}
.synopsis .syn-logline {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 620px;
  margin-top: 16px;
}
.spoiler-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 18px;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.spoiler-toggle:hover { color: var(--accent); border-color: var(--accent); }
.spoiler-toggle .tw { font-size: 13px; }
.syn-body {
  margin-top: 28px;
  display: none;
}
.syn-body.open { display: block; animation: fadeIn 0.35s ease; }
.syn-veil {
  margin-top: 24px;
  border: 1px dashed var(--rule);
  background: var(--paper-2);
  padding: 22px 24px;
  font-size: 14px;
  color: var(--ink-softer);
  font-family: 'JetBrains Mono', monospace;
  line-height: 1.6;
}
.syn-veil.hidden { display: none; }

/* ─── Studio (graph) page ──────────────── */
.studio-bar {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.studio-bar .sb-title {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.studio-bar .sb-title span { color: var(--ink-softer); font-weight: 500; }
.studio-frame {
  width: 100%;
  height: 88vh;
  min-height: 560px;
  border: 0;
  border-top: 1px solid var(--rule);
  display: block;
  background: var(--paper);
}
.studio-note {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 32px 0;
  font-size: 13px;
  color: var(--ink-softer);
}

/* ─── Tabs (per-novel page) ────────────── */
.tabs {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--rule);
}
.tab {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.03em;
  text-transform: lowercase;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 12px 18px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.tab:hover { color: var(--ink); }
.tab.active { color: var(--ink); border-bottom-color: var(--accent); }
.tabpanel { display: none; }
.tabpanel.active { display: block; animation: fadeIn 0.35s ease; }
.tabpanel.plot { margin-top: 28px; }

/* the studio embedded inside the studio tab */
.tab-studio-frame {
  width: 100%;
  height: 86vh;
  min-height: 560px;
  border: 1px solid var(--rule);
  display: block;
  background: var(--paper);
  margin-top: 24px;
}
.tab-studio-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-softer);
}
.tab-studio-note a {
  color: var(--ink-soft);
  border-bottom: 1px dotted var(--ink-softer);
  transition: color 0.15s, border-color 0.15s;
}
.tab-studio-note a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.studio-actions {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
}
.newtab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  transition: color 0.15s, border-color 0.15s;
}
.newtab-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ─── Disclaimer banner (novel pages) ──── */
.disclaimer {
  margin-top: 24px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  background: var(--paper-2);
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.disclaimer strong { color: var(--ink); font-weight: 600; }
.disclaimer .dl-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}

/* ─── Novel cards on the overview ──────── */
.novel-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.novel-card {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(.2,.8,.2,1), box-shadow 0.25s;
}
.novel-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.10);
}
.novel-card .nc-cover {
  aspect-ratio: 16 / 9;
  background: var(--paper);
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}
.novel-card .nc-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.novel-card .nc-body { padding: 24px 26px 26px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.novel-card .nc-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-softer);
}
.novel-card h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.02em;
}
.novel-card .nc-log {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-soft);
}
.novel-card .nc-plot {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
}
.novel-card .nc-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--ink-softer);
  text-transform: lowercase;
}
.novel-card .nc-cta {
  margin-top: auto;
  padding-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  transition: color 0.15s, gap 0.2s;
}
.novel-card:hover .nc-cta { color: var(--accent); gap: 12px; }

a.card-link { color: inherit; text-decoration: none; display: block; }

/* big call-to-action panel (architecture link) */
.cta-panel {
  margin-top: 8px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: 26px 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  transition: border-color 0.15s, background 0.15s;
}
a.card-link:hover .cta-panel { border-color: var(--accent); }
.cta-panel .cp-title {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.cta-panel .cp-desc { font-size: 14px; color: var(--ink-soft); line-height: 1.5; max-width: 560px; }
.cta-panel .cp-arrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  white-space: nowrap;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  transition: color 0.15s, gap 0.2s;
}
a.card-link:hover .cp-arrow { color: var(--accent); gap: 12px; }

/* ─── Footer ───────────────────────────── */
footer.site {
  border-top: 1px solid var(--rule);
  margin-top: 0;
  padding: 48px 32px 56px;
  position: relative;
  z-index: 2;
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 32px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-softer);
  text-transform: uppercase;
}
.footer-mark { display: flex; flex-direction: column; gap: 6px; }
.footer-mark .big {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
  text-transform: none;
}
.footer-center { text-align: center; line-height: 1.6; }
.footer-right { text-align: right; }

/* ─── Palette switcher ─────────────────── */
.palette-switcher {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 200;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.06);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-softer);
}
.palette-switcher .ps-label { border-right: 1px solid var(--rule); padding-right: 10px; }
.palette-switcher .swatches { display: flex; gap: 6px; }
.swatch {
  width: 22px; height: 22px;
  border-radius: 50%;
  cursor: pointer;
  border: 1px solid rgba(0,0,0,0.08);
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
}
.swatch:hover { transform: scale(1.12); }
.swatch.active { box-shadow: 0 0 0 2px var(--ink), 0 0 0 3px var(--paper); }
.swatch[data-pal="fog"]   { background: linear-gradient(135deg, #F6F6F7 50%, #1F4DDA 50%); }
.swatch[data-pal="white"] { background: linear-gradient(135deg, #FFFFFF 50%, #000000 50%); border-color: rgba(0,0,0,0.15); }
.swatch[data-pal="paper"] { background: linear-gradient(135deg, #F4F1E8 50%, #B5462A 50%); }
.swatch[data-pal="ink"]   { background: linear-gradient(135deg, #16161A 50%, #E07650 50%); border-color: rgba(255,255,255,0.15); }

/* ─── Responsive ───────────────────────── */
@media (max-width: 880px) {
  .header-inner { grid-template-columns: auto 1fr; gap: 16px; padding: 14px 20px; }
  .header-meta { display: none; }
  nav.primary { gap: 0; }
  nav.primary a { padding: 8px 8px; font-size: 11px; }
  .page { padding: 0 20px; }
  .lud-hero { grid-template-columns: 1fr; gap: 32px; padding-top: 24px; }
  .lud-hero-aside { flex-direction: row; align-items: flex-end; flex-wrap: wrap; }
  .cover { max-width: 180px; }
  .article { grid-template-columns: 1fr; gap: 8px; }
  .article-rail { position: static; margin-bottom: 8px; }
  .versions { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; text-align: left; gap: 16px; }
  .footer-center, .footer-right { text-align: left; }
  .studio-bar, .studio-note { padding-left: 20px; padding-right: 20px; }
  .palette-switcher { bottom: 12px; right: 12px; padding: 8px; }
  .palette-switcher .ps-label { display: none; }
}