/*
 * CORA Material theme overrides.
 *
 * Aligns with the coradata.org palette and IBM Plex typography.
 * Light + dark schemes both supplied; the toggle in the header switches
 * between them.
 */

/* ----------------------------------------------------------------------------
 * Light scheme (default)
 * --------------------------------------------------------------------------*/

:root,
[data-md-color-scheme="default"] {
  /* Brand palette — sourced from coradata.org */
  --cora-bg: #fafaf8;
  --cora-surface: #f5f3ee;
  --cora-surface-alt: #f1eee6;
  --cora-text: #1a1a1a;
  --cora-text-secondary: #4a4845;
  --cora-text-tertiary: #8a8580;
  --cora-accent: #2b4257;
  --cora-accent-hover: #1f3243;
  --cora-border: #d4d0c7;
  --cora-border-light: #e8e4dc;
  --cora-sage: #5f7a5a;
  --cora-status-green: #1f5c42;
  --cora-status-amber: #8c6b1f;

  /* Material primary (header, tabs background) */
  --md-primary-fg-color: var(--cora-accent);
  --md-primary-fg-color--light: #3a5470;
  --md-primary-fg-color--dark: var(--cora-accent-hover);
  --md-primary-bg-color: var(--cora-bg);
  --md-primary-bg-color--light: rgba(250, 250, 248, 0.8);

  /* Material accent (links, hover, focus) */
  --md-accent-fg-color: var(--cora-accent);
  --md-accent-fg-color--transparent: rgba(43, 66, 87, 0.1);
  --md-accent-bg-color: var(--cora-bg);

  /* Body links — pin to the accent color in both schemes. Material defaults
     --md-typeset-a-color to --md-primary-fg-color, which we repurpose for
     the dark header chrome in slate; without this override, slate-mode
     links inherit the near-bg surface color and disappear. */
  --md-typeset-a-color: var(--cora-accent);

  /* Page surfaces */
  --md-default-bg-color: var(--cora-bg);
  --md-default-fg-color: var(--cora-text);
  --md-default-fg-color--light: var(--cora-text-secondary);
  --md-default-fg-color--lighter: var(--cora-text-tertiary);
  --md-default-fg-color--lightest: var(--cora-border-light);

  /* Code blocks + inline code */
  --md-code-bg-color: var(--cora-surface);
  --md-code-fg-color: var(--cora-text);

  /* Tables */
  --md-typeset-table-color: var(--cora-border);
}

/* ----------------------------------------------------------------------------
 * Dark scheme (slate)
 * --------------------------------------------------------------------------*/

[data-md-color-scheme="slate"] {
  --cora-bg: #121211;
  --cora-surface: #1a1a18;
  --cora-surface-alt: #1f1f1d;
  --cora-text: #eceae4;
  --cora-text-secondary: #b8b5ad;
  --cora-text-tertiary: #807c74;
  --cora-accent: #9cb6ce;
  --cora-accent-hover: #b6cadd;
  --cora-border: #3a3a36;
  --cora-border-light: #2a2a27;
  --cora-sage: #8faa88;
  --cora-status-green: #6bae8a;
  --cora-status-amber: #c6a35f;

  --md-primary-fg-color: var(--cora-surface);
  --md-primary-fg-color--light: var(--cora-surface-alt);
  --md-primary-fg-color--dark: #0e0e0d;
  --md-primary-bg-color: var(--cora-text);

  --md-accent-fg-color: var(--cora-accent);
  --md-accent-fg-color--transparent: rgba(156, 182, 206, 0.15);
  --md-typeset-a-color: var(--cora-accent);

  --md-default-bg-color: var(--cora-bg);
  --md-default-fg-color: var(--cora-text);
  --md-default-fg-color--light: var(--cora-text-secondary);
  --md-default-fg-color--lighter: var(--cora-text-tertiary);
  --md-default-fg-color--lightest: var(--cora-border-light);

  --md-code-bg-color: var(--cora-surface);
  --md-code-fg-color: var(--cora-text);

  --md-typeset-table-color: var(--cora-border);
}

/* ----------------------------------------------------------------------------
 * Typography refinements
 * --------------------------------------------------------------------------*/

/* Headings: tighter letter-spacing matches the wordmark feel */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  letter-spacing: -0.01em;
  font-weight: 500;
}

.md-typeset h1 {
  font-weight: 400;
  font-size: 2.2rem;
  letter-spacing: -0.02em;
}

/* Definition-list term — used on the home page for the section signposts */
.md-typeset dl dt {
  font-weight: 500;
  color: var(--cora-text);
}

/* Block quotes: subtle left rule in the accent color, no italic */
.md-typeset blockquote {
  border-left: 2px solid var(--cora-accent);
  color: var(--cora-text-secondary);
  font-style: normal;
  padding-left: 1rem;
}

/* Inline code: tighter, less visually loud */
.md-typeset code {
  background-color: var(--cora-surface-alt);
  border-radius: 3px;
  padding: 0.1em 0.35em;
  font-size: 0.92em;
}

/* Copy-to-clipboard icon: Material binds this to --md-default-fg-color--lightest,
   which we map to --cora-border-light (near-bg) for divider strokes — invisible
   when reused as an icon. Pin to a real mid-gray so it's discoverable in both
   schemes; hover still uses --md-accent-fg-color (the brand accent).
   !important because Material's own selector (`.md-typeset .md-clipboard`) has
   higher specificity than a bare `.md-clipboard`. */
.md-clipboard,
.md-typeset .md-clipboard {
  color: var(--cora-text-secondary) !important;
}

.md-clipboard:hover,
.md-typeset .md-clipboard:hover {
  color: var(--cora-accent) !important;
}

/* Tables: cleaner borders, eyebrow-style headers */
.md-typeset table:not([class]) {
  border: 1px solid var(--cora-border);
}

.md-typeset table:not([class]) th {
  background-color: var(--cora-surface);
  color: var(--cora-text);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.md-typeset table:not([class]) td,
.md-typeset table:not([class]) th {
  border-color: var(--cora-border-light);
}

/* ----------------------------------------------------------------------------
 * Mermaid diagrams
 *
 * Material renders every mermaid block into a CLOSED Shadow DOM
 * (`r.attachShadow({mode:"closed"})`), which means external CSS in this file
 * cannot reach the SVG's nodes, edges, or labels. The only two things that
 * cross the shadow boundary are:
 *   1. CSS custom properties (--var) — they inherit through.
 *   2. CSS injected via mermaid's `themeCSS` init directive in each diagram.
 *
 * So this section sets the --md-mermaid-* variables that Material's bundled
 * themeCSS reads, and that's it. Per-class overrides for navy-fill nodes
 * (seam/op/concept) live in each diagram's `%%{init}%%` block.
 * --------------------------------------------------------------------------*/

:root,
[data-md-color-scheme="default"] {
  --md-mermaid-font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --md-mermaid-edge-color: var(--cora-text-secondary);
  --md-mermaid-node-bg-color: var(--cora-surface);
  --md-mermaid-node-fg-color: var(--cora-text);
  --md-mermaid-label-bg-color: var(--cora-bg);
  --md-mermaid-label-fg-color: #1a1a1a;
}

[data-md-color-scheme="slate"] {
  --md-mermaid-font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --md-mermaid-edge-color: var(--cora-text-secondary);
  --md-mermaid-node-bg-color: var(--cora-surface);
  --md-mermaid-node-fg-color: var(--cora-text);
  --md-mermaid-label-bg-color: var(--cora-bg);
  --md-mermaid-label-fg-color: #1a1a1a;
}

/* These target the host <pre.mermaid> wrapper, which lives in the light DOM,
   so they're safe (and necessary — sizing/centering happens outside the
   shadow). */
.mermaid {
  text-align: center;
}

.mermaid svg {
  max-width: 100%;
  max-height: calc(100vh - 8rem);
  width: auto;
  height: auto;
}

/* ----------------------------------------------------------------------------
 * Header — replicates coradata.org's chrome
 * --------------------------------------------------------------------------*/

/* Header background: warm off-white with a subtle glass effect.
   Matches `header.site` on coradata.org (92% bg + backdrop blur). */
.md-header {
  background-color: color-mix(in oklab, var(--cora-bg) 92%, transparent);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
  color: var(--cora-text);
  box-shadow: none;
  border-bottom: 1px solid var(--cora-border-light);
  transition: border-color 0.16s, box-shadow 0.16s, background 0.16s;
}

.md-header[data-md-state="shadow"] {
  box-shadow: 0 1px rgba(26, 26, 26, 0.02), 0 8px 24px -18px rgba(26, 26, 26, 0.18);
}

/* The brand-mark SVG (rendered by overrides/partials/logo.html).
   22px square, accent color, sage on hover — exact match for coradata.org. */
.md-header .md-logo .cora-brand-mark,
.md-header .cora-brand-mark {
  width: 22px;
  height: 22px;
  color: var(--cora-accent);
  flex: none;
  transition: color 0.2s;
  display: block;
}

.md-header__button.md-logo {
  padding: 0;
  margin: 0 0.5rem 0 0;
  color: var(--cora-accent);
}

.md-header__button.md-logo:hover .cora-brand-mark {
  color: var(--cora-sage);
}

/* Wordmark — Material's `.md-ellipsis` carries the site title. */
.md-header__title {
  color: var(--cora-accent);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.06em;
  margin-left: 0;
}

.md-header__title .md-header__ellipsis,
.md-header__title .md-ellipsis {
  color: var(--cora-accent);
  font-weight: 600;
  letter-spacing: 0.06em;
}

/* Hide the meta-line under the site name (Material can render an
   active-section breadcrumb there; coradata.org has nothing there). */
.md-header__topic + .md-header__topic {
  display: none;
}

/* Header icon buttons (search, palette toggle, repo): align with the
   navy palette rather than Material's default white-on-primary. */
.md-header__button {
  color: var(--cora-text-secondary);
}

.md-header__button:hover {
  color: var(--cora-accent);
}

/* Search box: match the warm-surface treatment. */
.md-search__form {
  background-color: var(--cora-surface);
  color: var(--cora-text);
}

.md-search__form:hover {
  background-color: var(--cora-surface-alt);
}

[data-md-toggle="search"]:checked ~ .md-header .md-search__form {
  background-color: var(--cora-surface-alt);
}

.md-search__input {
  color: var(--cora-text);
}

.md-search__input::placeholder {
  color: var(--cora-text-tertiary);
}

.md-search__icon {
  color: var(--cora-text-tertiary);
}

/* ----------------------------------------------------------------------------
 * Tabs — the nav row below the header.
 * Styled to match coradata.org's nav.site link treatment.
 * --------------------------------------------------------------------------*/

.md-tabs {
  background-color: transparent;
  color: var(--cora-text);
  border-bottom: 1px solid var(--cora-border-light);
}

.md-tabs__link {
  color: var(--cora-text);
  font-size: 14px;
  font-weight: 400;
  opacity: 1;
  letter-spacing: 0;
  margin-top: 0.8em;
}

.md-tabs__link:hover,
.md-tabs__link:focus,
.md-tabs__link--active {
  color: var(--cora-accent);
}

.md-tabs__link--active {
  font-weight: 500;
}

/* ----------------------------------------------------------------------------
 * Footer — mirrors coradata.org's `footer.site`
 * --------------------------------------------------------------------------*/

.cora-footer {
  background-color: var(--cora-bg);
  border-top: 1px solid var(--cora-border);
  color: var(--cora-text-tertiary);
  font-size: 13px;
  padding: 36px 0 56px;
}

.cora-footer__inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

.cora-footer__row {
  display: flex;
}

.cora-footer__row--primary {
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 12px;
}

.cora-footer__row--meta {
  color: var(--cora-text-tertiary);
}

/* Wordmark on the left of the primary row */
.cora-footer__wordmark {
  color: var(--cora-text-secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.cora-footer__wordmark:hover {
  color: var(--cora-accent);
  text-decoration: none;
}

.cora-footer__wordmark:hover .cora-brand-mark {
  color: var(--cora-accent);
}

.cora-brand-mark--sm {
  width: 14px;
  height: 14px;
  vertical-align: -2px;
  display: inline-block;
  color: currentColor;
  transition: color 0.15s;
}

.cora-footer__wordmark-text {
  letter-spacing: 0.02em;
}

/* Socials on the right of the primary row */
.cora-footer__socials {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 14px;
}

.cora-footer__socials a {
  color: var(--cora-text-tertiary);
  transition: color 0.15s;
  display: inline-flex;
  text-decoration: none;
}

.cora-footer__socials a:hover {
  color: var(--cora-accent);
  text-decoration: none;
}

/* Suppress Material's default footer reset so our markup is the only one */
.md-footer.cora-footer .md-footer__inner,
.md-footer.cora-footer .md-footer-meta {
  display: none;
}