/* ============================================================
   THE ARI CODEX — reading shell
   Consumes the AXION design system (../styles.css).
   ============================================================ */

:root {
  --codex-prose-width: 46rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--surface-base);
  color: var(--text-body);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: var(--leading-relaxed);
  -webkit-font-smoothing: antialiased;
}

/* ---------- Layout ---------- */
.codex-shell {
  display: block;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.codex-side {
  position: fixed;
  left: 0;
  top: 0;
  width: 300px;
  height: 100vh;
  border-right: 1px solid var(--line-hairline);
  background: var(--void-1000);
  padding: 40px 0 48px 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.codex-side .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 28px 24px 28px;
  border-bottom: 1px solid var(--line-hairline);
  text-decoration: none;
}
.codex-side .brand .seed {
  width: 30px; height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--gold-400);
  font-family: var(--font-display);
  font-size: 14px;
}
.codex-side .brand .word {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: var(--tracking-wider);
  color: var(--ivory-100);
  text-transform: uppercase;
}
.codex-side .brand .word small {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: var(--tracking-widest);
  color: var(--stone-400);
  margin-top: 4px;
}

.codex-back-link {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 28px 8px 28px;
  padding: 10px 14px;
  border: 1px solid var(--line-hairline);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--stone-400);
  text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.codex-back-link:hover {
  border-color: var(--gold-500);
  color: var(--gold-300);
}

.codex-blueprint-link {
  margin-top: -2px;
  border-color: rgba(140,106,34,0.5);
  color: var(--gold-300);
}
.codex-blueprint-link:hover {
  border-color: var(--gold-500);
  color: var(--gold-200);
}

#codex-nav { padding: 20px 0; display: flex; flex-direction: column; }
#codex-nav .nav-group-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--stone-500);
  padding: 18px 28px 8px 28px;
}
#codex-nav a {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 8px 28px;
  text-decoration: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  letter-spacing: 0.01em;
  border-left: 2px solid transparent;
}
#codex-nav a .n {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  color: var(--stone-500);
}
#codex-nav a:hover { color: var(--ivory-100); background: var(--surface-gold-soft); }
#codex-nav a.active {
  color: var(--gold-300);
  border-left-color: var(--gold-500);
  background: var(--surface-gold-soft);
}
#codex-nav a.active .n { color: var(--gold-600); }

/* ---------- Main column ---------- */
.codex-main { margin-left: 300px; padding: 88px 64px 120px 64px; }
.codex-article { max-width: var(--codex-prose-width); margin: 0 auto; }

/* ---------- Book header ---------- */
.book-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--gold-500);
  margin: 0 0 20px 0;
}
h1.book-title {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: clamp(2.25rem, 4vw, 3rem);
  letter-spacing: var(--tracking-wide);
  line-height: var(--leading-tight);
  color: var(--text-strong);
  margin: 0 0 14px 0;
}
p.book-sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.375rem;
  color: var(--text-muted);
  margin: 0 0 40px 0;
}
.book-rule {
  border: 0; height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
  margin: 0 0 56px 0;
}

/* ---------- Chapters ---------- */
h2 {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: 1.625rem;
  letter-spacing: var(--tracking-wide);
  color: var(--gold-300);
  margin: 80px 0 20px 0;
  padding-top: 34px;
  border-top: 1px solid var(--line-hairline);
}
h2 .ch {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--stone-400);
  margin-bottom: 12px;
}
h3 {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: 1.0625rem;
  letter-spacing: 0.02em;
  color: var(--ivory-50);
  margin: 40px 0 10px 0;
}
h3 .glyph { color: var(--gold-400); margin-right: 8px; }

p { margin: 0 0 18px 0; }
p.lead {
  font-size: 1.4375rem;
  color: var(--ivory-50);
}
strong { color: var(--ivory-50); font-weight: var(--fw-semibold); }
em { color: var(--ivory-200); }
a { color: var(--gold-400); text-decoration: none; border-bottom: 1px solid var(--line-strong); }
a:hover { color: var(--gold-200); }

/* ---------- Axiom / epigraph ---------- */
.axiom {
  margin: 48px 0;
  padding: 36px 40px;
  border: 1px solid var(--line-hairline);
  background: var(--surface-gold-soft);
  text-align: center;
}
.axiom .mark {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--gold-500);
  margin: 0 0 16px 0;
}
.axiom p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.375rem;
  line-height: 1.6;
  color: var(--ivory-100);
  margin: 0;
}
.axiom cite {
  display: block;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--stone-400);
  margin-top: 16px;
}

/* ---------- Creed (short declarative stack) ---------- */
.creed {
  margin: 32px 0;
  padding-left: 28px;
  border-left: 1px solid var(--line-strong);
}
.creed p { margin: 0 0 8px 0; font-size: 1.3125rem; color: var(--ivory-100); }
.creed p:last-child { margin-bottom: 0; }

/* ---------- Token lists ---------- */
ul.plain { list-style: none; padding: 0; margin: 0 0 20px 0; }
ul.cols {
  list-style: none;
  padding: 0;
  margin: 12px 0 24px 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 6px 24px;
}
ul.cols li, ul.plain li {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 4px 0 4px 16px;
  position: relative;
}
ul.cols li::before, ul.plain li::before {
  content: "·";
  position: absolute; left: 0;
  color: var(--gold-500);
}
ol.flow { padding-left: 22px; margin: 12px 0 24px 0; }
ol.flow li {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-muted);
  padding: 4px 0 4px 6px;
}
ol.flow li::marker { color: var(--gold-500); font-family: var(--font-mono); font-size: 0.75rem; }

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 14px;
  margin: 24px 0 32px 0;
}
.card {
  border: 1px solid var(--line-soft);
  background: var(--surface-card);
  padding: 20px 20px 18px 20px;
}
.card h4 {
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  font-size: 0.9375rem;
  letter-spacing: var(--tracking-wide);
  color: var(--gold-300);
  margin: 0 0 4px 0;
}
.card .tag {
  font-family: var(--font-mono);
  font-size: 0.5938rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--stone-500);
  display: block;
  margin-bottom: 10px;
}
.card p {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin: 0;
}
.card .q {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--ivory-200);
  margin-top: 10px;
}

/* ---------- Laws ---------- */
.law {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}
.law:last-of-type { border-bottom: 0; }
.law .num {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  letter-spacing: var(--tracking-wide);
  color: var(--gold-500);
  padding-top: 2px;
}
.law h4 {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: 1rem;
  color: var(--ivory-50);
  margin: 0 0 6px 0;
}
.law p {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}

/* ---------- Definition tables ---------- */
table.kv {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 32px 0;
  font-family: var(--font-sans);
  font-size: 0.875rem;
}
table.kv th, table.kv td {
  text-align: left;
  padding: 10px 16px 10px 0;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
table.kv th {
  font-family: var(--font-mono);
  font-weight: var(--fw-medium);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-500);
  white-space: nowrap;
  width: 200px;
}
table.kv td { color: var(--text-muted); line-height: 1.55; }

/* ---------- Cycle / flow strip ---------- */
.cycle {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 20px 0 28px 0;
}
.cycle span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--ivory-200);
  border: 1px solid var(--line-soft);
  background: var(--surface-card);
  padding: 7px 12px;
}
.cycle i {
  font-style: normal;
  color: var(--gold-600);
  font-size: 0.75rem;
}

/* ---------- Callout ---------- */
.note {
  margin: 28px 0;
  padding: 22px 26px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--gold-600);
  background: var(--surface-card);
}
.note p {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}
.note .note-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: 8px;
}

/* ---------- Pager ---------- */
#codex-pager {
  max-width: var(--codex-prose-width);
  margin: 96px auto 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line-hairline);
  padding-top: 28px;
}
#codex-pager a {
  border-bottom: 0;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--ivory-200);
  max-width: 46%;
}
#codex-pager a:hover { color: var(--gold-300); }
#codex-pager a .dir {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--stone-500);
  margin-bottom: 6px;
}
#codex-pager a.next { text-align: right; margin-left: auto; }

/* ---------- Print ---------- */
@media print {
  .codex-side, #codex-pager { display: none; }
  .codex-shell { display: block; }
  body { background: #fff; color: #1a1712; }
  .codex-main { padding: 0; }
}

/* ---------- Small screens ---------- */
@media (max-width: 940px) {
  .codex-shell { display: flex; flex-direction: column; }
  .codex-side {
    position: static; width: auto; height: auto; order: 2;
    border-right: 0; border-top: 1px solid var(--line-hairline);
    overflow-y: visible;
  }
  .codex-main { order: 1; margin-left: 0; padding: 40px 24px 64px 24px; }
  .codex-side #codex-nav {
    max-height: 60vh; overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }
}