/* ============================================================================
   Corpus — "Archive" theme  (redesign of the old "Knowledge Garden")
   Warm paper · muted moss · ochre citation accent · Newsreader + IBM Plex
   Drop-in replacement for stylesheets/extra.css in the MkDocs-Material site.
   ============================================================================ */

/* ----------------------------------------------------------------------------
   1. Design tokens  →  mapped onto Material's CSS custom properties
   ---------------------------------------------------------------------------- */
:root {
  /* brand */
  --md-primary-fg-color:        #4c5e40;   /* moss */
  --md-primary-fg-color--light: #6f8e6f;
  --md-primary-fg-color--dark:  #3a4a30;   /* moss-deep */
  --md-accent-fg-color:         #a9762a;   /* ochre */

  /* corpus palette (used by rules below) */
  --corpus-paper:     #f2ede1;
  --corpus-surface:   #fbf8f0;
  --corpus-band:      #ece5d6;
  --corpus-ink:       #2b2820;
  --corpus-ink-soft:  #6a655a;
  --corpus-ink-faint: #98917f;
  --corpus-hairline:  rgba(43,40,32,0.13);
  --corpus-hairline-2:rgba(43,40,32,0.08);
  --corpus-moss:      #4c5e40;
  --corpus-moss-deep: #3a4a30;
  --corpus-ochre:     #a9762a;
  --corpus-active:    #e6ead9;
}

[data-md-color-scheme="default"] {
  --md-default-bg-color:        var(--corpus-paper);
  --md-default-fg-color:        var(--corpus-ink);
  --md-default-fg-color--light: var(--corpus-ink-soft);
  --md-default-fg-color--lighter: var(--corpus-ink-faint);
  --md-typeset-a-color:         var(--corpus-moss);
  --md-code-bg-color:           var(--corpus-band);
  --md-code-fg-color:           var(--corpus-ink);
  --md-footer-bg-color:         var(--corpus-band);
  --md-footer-fg-color:         var(--corpus-ink-soft);
}

/* Dark scheme — warm charcoal, not the default cold slate */
[data-md-color-scheme="slate"] {
  --md-hue: 30;                              /* warm the slate base */
  --md-primary-fg-color:  #9cbf93;
  --md-primary-fg-color--dark: #b6d4ac;
  --md-accent-fg-color:   #e0a747;

  --corpus-paper:     #1b1815;
  --corpus-surface:   #232019;
  --corpus-band:      #201d17;
  --corpus-ink:       #ece5d6;
  --corpus-ink-soft:  #b3ab9a;
  --corpus-ink-faint: #8a8272;
  --corpus-hairline:  rgba(236,229,214,0.15);
  --corpus-hairline-2:rgba(236,229,214,0.08);
  --corpus-moss:      #9cbf93;
  --corpus-moss-deep: #b6d4ac;
  --corpus-ochre:     #e0a747;
  --corpus-active:    #2c3527;

  --md-default-bg-color:        var(--corpus-paper);
  --md-default-fg-color:        var(--corpus-ink);
  --md-default-fg-color--light: var(--corpus-ink-soft);
  --md-default-fg-color--lighter: var(--corpus-ink-faint);
  --md-typeset-a-color:         var(--corpus-moss);
  --md-code-bg-color:           var(--corpus-band);
  --md-code-fg-color:           var(--corpus-ink);
  --md-footer-bg-color:         var(--corpus-band);
}

/* ----------------------------------------------------------------------------
   2. Typography
   Body: IBM Plex Sans · Display headings: Newsreader · Mono/meta: IBM Plex Mono
   (font <link>s injected via overrides/main.html; also set in mkdocs.yml
    theme.font.text: "IBM Plex Sans" / code: "IBM Plex Mono")
   ---------------------------------------------------------------------------- */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  font-family: "Newsreader", Georgia, serif;
  letter-spacing: -0.015em;
}
.md-typeset h1 { font-weight: 500; font-size: 2.6rem; line-height: 1.06; color: var(--corpus-ink); }
.md-typeset h2 { font-weight: 600; }
.md-typeset h3 { font-weight: 600; }

/* Monospace eyebrows / metadata helper (add class="eyebrow" in Markdown) */
.md-typeset .eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--corpus-ochre);
}

/* ----------------------------------------------------------------------------
   3. Header / footer chrome
   ---------------------------------------------------------------------------- */
.md-header {
  background-color: color-mix(in srgb, var(--corpus-paper) 86%, transparent);
  backdrop-filter: blur(12px);
  color: var(--corpus-ink);
  box-shadow: none;
  border-bottom: 1px solid var(--corpus-hairline);
}
.md-header--shadow { box-shadow: none; }
.md-tabs { background: transparent; }

.corpus-footer {
  background: var(--corpus-band);
  border-top: 1px solid var(--corpus-hairline);
  color: var(--corpus-ink-soft);
}
.corpus-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  padding: 40px 0;
}
.corpus-footer-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--corpus-ink-soft);
}
.corpus-footer-brand svg { fill: var(--corpus-ink-faint); width: 20px; height: 20px; }
.corpus-footer-name {
  font-family: "Newsreader", Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  color: var(--corpus-ink);
}
.corpus-footer-tagline,
.corpus-footer-meta {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--corpus-ink-faint);
}
.corpus-footer-tagline { margin-left: 6px; }

/* Corpus header: logo + static wordmark, inline nav, spacer, then the
   stock search/palette/repo controls pushed to the right (see
   overrides/partials/header.html). Replaces Material's default logo-only
   header + scroll-triggered page title. */
.md-header__inner.md-grid { align-items: center; gap: 30px; }
.md-header .corpus-logo.md-logo { display: flex; align-items: center; gap: 11px; }
.corpus-wordmark {
  font-family: "Newsreader", Georgia, serif;
  font-size: 23px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--corpus-ink);
}
.corpus-header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: 6px;
}
.corpus-header-nav a {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14px;
  color: var(--corpus-ink-soft);
  white-space: nowrap;
}
.corpus-header-nav a:hover { color: var(--corpus-ochre); }
.corpus-header-spacer { flex: 1; }
@media screen and (max-width: 76.234375em) {
  .corpus-header-nav { display: none; }
}

/* ----------------------------------------------------------------------------
   4. Home hero  (wrap the intro block in <div class="hero"> … </div>)
   ---------------------------------------------------------------------------- */
.md-typeset .hero { padding: 2.6rem 0 0.4rem; }
.md-typeset .hero-eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--corpus-ochre);
  margin: 0 0 1rem;
}
.md-typeset .hero h1 {
  font-size: 3.6rem;
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.md-typeset .hero h1 + p {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-size: 1.4rem;
  color: var(--corpus-ink-soft);
  margin-top: 0.9rem;
  max-width: 34rem;
}
.md-typeset .hero-stats {
  display: flex;
  gap: 0;
  margin-top: 2.4rem;
  border-top: 1px solid var(--corpus-hairline);
  border-bottom: 1px solid var(--corpus-hairline);
  max-width: 34rem;
}
.md-typeset .hero-stat {
  padding: 1.2rem 2.2rem 1.2rem 0;
  border-right: 1px solid var(--corpus-hairline-2);
}
.md-typeset .hero-stat:last-child { border-right: none; padding-right: 0; }
.md-typeset .hero-stat + .hero-stat { padding-left: 2.2rem; }
.md-typeset .hero-stat-n {
  font-family: "Newsreader", Georgia, serif;
  font-size: 2.2rem;
  font-weight: 500;
  line-height: 1;
  color: var(--corpus-ink);
}
.md-typeset .hero-stat-l {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--corpus-ink-faint);
  margin-top: 0.45rem;
}

/* ----------------------------------------------------------------------------
   5. Cards on the home grid — numbered eyebrow, hairline mesh, inverted CTA
   ---------------------------------------------------------------------------- */
.md-typeset .corpus-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--corpus-hairline);
  border: 1px solid var(--corpus-hairline);
  border-radius: 14px;
  overflow: hidden;
  margin: 0 0 1.5rem;
}
@media screen and (max-width: 60em) {
  .md-typeset .corpus-card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media screen and (max-width: 40em) {
  .md-typeset .corpus-card-grid { grid-template-columns: 1fr; }
}
.md-typeset .corpus-card {
  position: relative;
  display: block;
  background: var(--corpus-surface);
  padding: 34px 32px;
  color: var(--corpus-ink);
  transition: background .18s ease;
}
.md-typeset .corpus-card:hover { background: var(--corpus-band); }
.md-typeset .corpus-card-n {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--corpus-ochre);
  margin-bottom: 1rem;
}
.md-typeset .corpus-card strong {
  display: block;
  font-family: "Newsreader", Georgia, serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--corpus-ink);
  margin-bottom: 0.6rem;
}
.md-typeset .corpus-card strong a {
  color: inherit;
}
.md-typeset .corpus-card strong a::after {
  content: "";
  position: absolute;
  inset: 0;
}
.md-typeset .corpus-card p {
  font-size: 0.905rem;
  line-height: 1.6;
  color: var(--corpus-ink-soft);
  margin: 0;
}
.md-typeset .corpus-card-more {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  margin-top: 1.25rem;
}
.md-typeset .corpus-card-more a { color: var(--corpus-moss); }
.md-typeset .corpus-card-cta {
  background: var(--corpus-ink);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.md-typeset .corpus-card-cta:hover { background: var(--corpus-moss-deep); }
.md-typeset .corpus-card-cta strong {
  color: var(--corpus-paper);
  margin-bottom: 0.5rem;
}
.md-typeset .corpus-card-cta strong a { color: inherit; }
.md-typeset .corpus-card-cta p {
  color: var(--corpus-ink-faint);
}

/* Pipeline band — source dot-chips -> Inbox -> Ingest agent (inverted) ->
   Corpus pages -> Indexes, joined by arrow glyphs. Replaces a mermaid
   flowchart with the design's flat pill-card chain. */
.md-typeset .corpus-pipeline {
  background: var(--corpus-band);
  border-top: 1px solid var(--corpus-hairline-2);
  border-bottom: 1px solid var(--corpus-hairline-2);
  margin: 2rem calc(50% - 50vw);
  padding: 2.6rem calc(50vw - 50%);
}
.md-typeset .corpus-pipeline-eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--corpus-ink-faint);
  margin: 0 0 1.6rem;
}
.md-typeset .corpus-pipeline-row {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: nowrap;
}
.md-typeset .corpus-pipeline-sources {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.md-typeset .corpus-pipeline-source {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  color: var(--corpus-ink-soft);
}
.md-typeset .corpus-pipeline-source .dot {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  flex-shrink: 0;
}
.md-typeset .corpus-pipeline-arrow {
  font-size: 1.25rem;
  color: var(--corpus-ink-faint);
}
.md-typeset .corpus-pipeline-step {
  background: var(--corpus-surface);
  border: 1px solid var(--corpus-hairline);
  border-radius: 10px;
  padding: 18px 22px;
  min-width: 150px;
}
.md-typeset .corpus-pipeline-step-title {
  font-family: "Newsreader", Georgia, serif;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--corpus-ink);
}
.md-typeset .corpus-pipeline-step-sub {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--corpus-ink-faint);
  margin-top: 5px;
}
.md-typeset .corpus-pipeline-step-sub-accent { color: var(--corpus-ochre); }
.md-typeset .corpus-pipeline-step-inverted {
  background: var(--corpus-ink);
  border-color: var(--corpus-ink);
}
.md-typeset .corpus-pipeline-step-inverted .corpus-pipeline-step-title {
  color: var(--corpus-paper);
}
.md-typeset .corpus-pipeline-caption {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--corpus-ink-soft);
  max-width: 40rem;
  margin: 1.9rem 0 0;
}

/* Below ~1360px the horizontal chain (source list + 4 pill-cards + arrows)
   no longer fits on one line. flex-wrap would break it at an arbitrary
   point (stranded arrows, cards colliding without a connector) depending
   on exact width, so the row is nowrap above this breakpoint and switches
   to an explicit vertical stack below it instead — never an in-between
   half-wrapped state. */
@media screen and (max-width: 1360px) {
  .md-typeset .corpus-pipeline-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .md-typeset .corpus-pipeline-sources {
    flex-direction: row;
    flex-wrap: wrap;
    column-gap: 20px;
    row-gap: 8px;
    margin-bottom: 20px;
  }
  .md-typeset .corpus-pipeline-step { min-width: 0; }
  .md-typeset .corpus-pipeline-arrow {
    align-self: center;
    padding: 10px 0;
    transform: rotate(90deg);
  }
}
@media screen and (max-width: 480px) {
  .md-typeset .corpus-pipeline { padding: 2rem calc(50vw - 50%); }
  .md-typeset .corpus-pipeline-sources { flex-direction: column; gap: 7px; }
}

/* "Why this exists" — heading left, body + pull-quote right */
.md-typeset .corpus-ethos {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: start;
  margin: 1.5rem 0;
}
.md-typeset .corpus-ethos-title h2 { margin-top: 0; }
@media screen and (max-width: 60em) {
  .md-typeset .corpus-ethos { grid-template-columns: 1fr; gap: 1rem; }
}

/* ----------------------------------------------------------------------------
   6. Admonitions / pull-quotes — left ochre rule, no icon chrome noise
   ---------------------------------------------------------------------------- */
.md-typeset .admonition,
.md-typeset details {
  border: none;
  border-left: 3px solid var(--corpus-moss);
  border-radius: 0 10px 10px 0;
  background: var(--corpus-surface);
  box-shadow: none;
  font-size: 0.86rem;
}
.md-typeset .admonition.quote,
.md-typeset .admonition.warning {
  border-left-color: var(--corpus-ochre);
}
.md-typeset .admonition.quote > p:not(.admonition-title) {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.45;
  color: var(--corpus-ink);
}
/* Material colors .admonition-title's background/icon per type (info=blue,
   warning=orange, abstract=cyan, …) via `.admonition.<type> .admonition-title`
   rules — same specificity as a per-type override here, so list every
   built-in type explicitly to reset them all to one flat/quiet treatment. */
.md-typeset .admonition.note .admonition-title,
.md-typeset .admonition.abstract .admonition-title,
.md-typeset .admonition.info .admonition-title,
.md-typeset .admonition.tip .admonition-title,
.md-typeset .admonition.success .admonition-title,
.md-typeset .admonition.question .admonition-title,
.md-typeset .admonition.warning .admonition-title,
.md-typeset .admonition.failure .admonition-title,
.md-typeset .admonition.danger .admonition-title,
.md-typeset .admonition.bug .admonition-title,
.md-typeset .admonition.example .admonition-title,
.md-typeset .admonition.quote .admonition-title {
  background-color: transparent;
  color: var(--corpus-ink);
}
.md-typeset .admonition.note .admonition-title::before,
.md-typeset .admonition.abstract .admonition-title::before,
.md-typeset .admonition.info .admonition-title::before,
.md-typeset .admonition.tip .admonition-title::before,
.md-typeset .admonition.success .admonition-title::before,
.md-typeset .admonition.question .admonition-title::before,
.md-typeset .admonition.failure .admonition-title::before,
.md-typeset .admonition.danger .admonition-title::before,
.md-typeset .admonition.bug .admonition-title::before,
.md-typeset .admonition.example .admonition-title::before {
  background-color: var(--corpus-ink-soft);
}
.md-typeset .admonition.quote .admonition-title::before,
.md-typeset .admonition.warning .admonition-title::before {
  background-color: var(--corpus-ochre);
}

/* ----------------------------------------------------------------------------
   7. Tables — mono uppercase head, hairline rows
   ---------------------------------------------------------------------------- */
.md-typeset table:not([class]) {
  border: none;
  box-shadow: none;
}
.md-typeset table:not([class]) th {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--corpus-ink-faint);
  background: transparent;
  border-bottom: 1px solid var(--corpus-hairline);
}
.md-typeset table:not([class]) td {
  border-bottom: 1px solid var(--corpus-hairline-2);
  background: transparent;
}

/* ----------------------------------------------------------------------------
   8. Knowledge-graph canvas
   ---------------------------------------------------------------------------- */
#corpus-graph {
  height: 560px;
  width: 100%;
  border: 1px solid var(--corpus-hairline);
  border-radius: 14px;
  background: var(--corpus-surface);
  margin: 1rem 0 0.4rem;
}
.graph-caption {
  text-align: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--corpus-ink-faint);
  margin-bottom: 1.4rem;
}

/* ----------------------------------------------------------------------------
   9. Nav — active item gets a moss rule + soft wash
   ---------------------------------------------------------------------------- */
.md-nav__link--active,
.md-nav__item .md-nav__link--active {
  color: var(--corpus-moss-deep);
  font-weight: 600;
  background: var(--corpus-active);
  border-left: 2px solid var(--corpus-moss);
  border-radius: 0 4px 4px 0;
}