/*
  RefData Hub documentation theme.

  This stylesheet paints Material for MkDocs with the Reviewer UI's design
  language: the same palette tokens (see tokens.css, generated from
  reviewer-ui/src/styles.css), the same card/badge/button geometry, the same
  dotted canvas background, and the same system font stack.

  Structure
  - 1. Typography
  - 2. Canvas + transitions
  - 3. Header / tabs
  - 4. Sidebar navigation
  - 5. Content surfaces (cards, panels, metric tiles)
  - 6. Tables
  - 7. Admonitions
  - 8. Code blocks
  - 9. Buttons, badges, media
  - 10. Mermaid diagrams
  - 11. Theme picker
  - 12. Search, footer, 404
  - 13. Responsive + reduced motion
*/

/* =========================================================================
   1. Typography
   ========================================================================= */

:root {
  /* Match the app: Tailwind's --font-sans default, no webfont download. */
  --font-app-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
    "Segoe UI Symbol", "Noto Color Emoji";
  --font-app-mono:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;

  /* Material indirection so the rest of this file can stay palette-agnostic. */
  --rdh-surface: var(--color-bg-secondary);
  --rdh-surface-alt: var(--color-bg-tertiary);
  --rdh-ink: var(--color-text-primary);
  --rdh-ink-muted: var(--color-text-tertiary);
  --rdh-line: var(--color-border-primary);
  --rdh-line-strong: var(--color-border-secondary);
  --rdh-accent: var(--color-brand-primary);
  --rdh-accent-soft: color-mix(in srgb, var(--color-brand-primary) 10%, transparent);
  --rdh-accent-line: color-mix(in srgb, var(--color-brand-primary) 22%, transparent);
  --rdh-success: var(--color-brand-success);
  --rdh-warning: var(--color-brand-warning);
  --rdh-danger: var(--color-brand-danger);

  /* Material variable remapping onto the app palette. */
  --md-text-font: var(--font-app-sans);
  --md-code-font: var(--font-app-mono);
  --md-typeset-color: var(--color-text-secondary);
  --md-default-fg-color: var(--color-text-secondary);
  --md-default-fg-color--light: var(--color-text-tertiary);
  --md-default-fg-color--lighter: var(--color-text-tertiary);
  --md-default-fg-color--lightest: var(--color-text-tertiary);
  --md-default-bg-color: var(--color-bg-primary);
  --md-code-fg-color: var(--color-text-secondary);
  --md-code-bg-color: var(--color-bg-tertiary);
  --md-code-bg-color--light: var(--color-bg-secondary);
  --md-typeset-a-color: var(--color-brand-primary);
  --md-accent-fg-color: var(--color-brand-accent-contrast);
  --md-accent-fg-color--transparent: var(--color-brand-primary-hover);
  --md-accent-bg-color: var(--color-brand-primary);
  --md-accent-bg-color--light: var(--color-brand-primary);
  --md-footer-bg-color: var(--color-bg-secondary);
  --md-footer-bg-color--dark: var(--color-bg-secondary);
  --md-header-bg-color: var(--color-topbar-bg);
  --md-tabs-bg-color: var(--color-topbar-bg);
  --md-search-bg-color: var(--color-bg-secondary);
  --md-border-color: var(--color-border-primary);
  --md-admonition-icon-size: 1.1rem;
}

body,
input,
button,
select,
textarea {
  font-family: var(--font-app-sans);
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

/* Material's bundle.js writes `data-md-color-scheme` onto <body> on every page
   and ships a `[data-md-color-scheme="..."]` block that redefines every
   `--md-*` variable. Keyed on `body[data-md-color-scheme]` (0,1,1) this wins
   that (0,1,0) block, so Material's own components — search dialog, tooltips,
   dropdowns, code highlight tokens — follow the selected palette instead of
   staying light. */
body[data-md-color-scheme] {
  --md-default-fg-color: var(--color-text-secondary);
  --md-default-fg-color--light: var(--color-text-tertiary);
  --md-default-fg-color--lighter: var(--color-text-tertiary);
  --md-default-fg-color--lightest: var(--color-border-secondary);
  --md-default-bg-color: var(--color-bg-primary);
  --md-default-bg-color--light: var(--color-bg-secondary);
  --md-default-bg-color--lighter: var(--color-bg-tertiary);
  --md-code-fg-color: var(--color-text-secondary);
  --md-code-bg-color: var(--color-bg-tertiary);
  --md-code-bg-color--light: var(--color-bg-secondary);
  --md-accent-fg-color: var(--color-brand-accent-contrast);
  --md-accent-fg-color--transparent: var(--color-brand-primary-hover);
  --md-accent-bg-color: var(--color-brand-primary);
  --md-accent-bg-color--light: var(--color-brand-primary);
  --md-border-color: var(--color-border-primary);
}

/* =========================================================================
   2. Canvas + transitions

   The app transitions background/border/color/shadow on every element so
   theme switches animate. Material does not, so mirror that here.
   ========================================================================= */

.md-typeset *,
.md-header *,
.md-nav *,
.md-footer * {
  transition:
    background-color 200ms cubic-bezier(0.4, 0, 0.2, 1),
    border-color 200ms cubic-bezier(0.4, 0, 0.2, 1),
    color 200ms cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  background-color: var(--color-bg-primary);
  background-image: radial-gradient(
    rgba(120, 120, 120, 0.05) 1px,
    transparent 1px
  );
  background-size: 24px 24px;
  background-attachment: fixed;
}

.md-grid {
  max-width: 90rem;
}

/* =========================================================================
   3. Header / tabs
   ========================================================================= */

.md-header {
  background-color: var(--color-topbar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-topbar-border);
  box-shadow: none;
}

.md-header__title {
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
}

.md-header__topic:first-child {
  font-size: 0.95rem;
}

.md-logo {
  padding: 0.5rem 0;
}

.md-logo svg,
.md-logo img {
  height: 2rem;
  width: auto;
}

.md-header__button.md-logo {
  border-radius: var(--radius-md);
}

/* Material styles .md-source with --md-primary-fg-color (white) because its
   stock header is a solid primary colour. This theme paints the header with
   --color-topbar-bg, a translucent near-white, which made the repository link
   render white-on-white and invisible. */
.md-source {
  color: var(--color-text-secondary);
}

.md-source:is(:hover, :focus) {
  color: var(--color-brand-primary);
}

.md-source__icon {
  fill: currentColor;
}

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

/* Material renders the repository's latest *release tag* as a version chip.
   This repository has a stray tag literally named "docker" (not a release),
   so the header showed "◇docker" next to the star count and read as a bug.
   Remove this block once the repo publishes real semantic version tags. */
.md-source__fact--version {
  display: none;
}

.md-source__title {
  font-weight: 600;
}

.md-tabs {
  background-color: var(--color-topbar-bg);
  border-bottom: 1px solid var(--color-topbar-border);
  overflow-y: auto;
}

.md-tabs__link {
  color: var(--color-text-secondary);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding: 0.65rem 0.5rem;
}

.md-tabs__link:hover {
  color: var(--color-text-primary);
}

.md-tabs__item--active > .md-tabs__link {
  color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

.md-search__form {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  box-shadow: none;
  padding: 0.35rem 0.6rem;
}

.md-search__form:hover {
  border-color: var(--color-border-secondary);
  box-shadow: 0 0 0 3px var(--rdh-accent-soft);
}

.md-search__input {
  font-size: 0.75rem;
  color: var(--color-text-primary);
}

.md-search__output {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.md-search-result__link:hover {
  background-color: var(--color-bg-hover);
}

.md-search-result__nested {
  background-color: transparent;
}

/* =========================================================================
   4. Sidebar navigation

   Mirrors the app's navigation rail: collapsible-looking rail, pill-shaped
   active item in the sidebar-active tint, muted uppercase group labels.
   ========================================================================= */

.md-sidebar {
  background-color: var(--color-sidebar-bg);
  border-right: 1px solid var(--color-sidebar-border);
}

.md-sidebar--primary {
  background-color: var(--color-sidebar-bg);
}

.md-nav__title {
  padding: 1rem 1rem 0.4rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.md-nav__item {
  padding: 0 0.6rem;
}

.md-nav__link {
  display: flex;
  align-items: center;
  border-radius: var(--radius-md);
  padding: 0.42rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-sidebar-text);
  border: 1px solid transparent;
}

.md-nav__link:hover {
  background-color: var(--color-sidebar-item-hover);
  color: var(--color-text-primary);
}

.md-nav__link--active,
.md-nav__link--active:hover {
  background-color: var(--color-sidebar-item-active);
  border-color: var(--rdh-accent-line);
  color: var(--color-sidebar-text-active);
  font-weight: 700;
}

.md-nav__link--active .md-nav__icon {
  color: var(--color-brand-primary);
}

.md-nav__icon {
  color: var(--color-text-tertiary);
  margin-right: 0.45rem;
  fill: currentColor;
}

.md-nav__item--section > .md-nav__link {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.md-nav__list--secondary {
  margin-left: 0.75rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--color-border-primary);
}

.md-nav__list--secondary .md-nav__link {
  font-size: 0.74rem;
  font-weight: 400;
  color: var(--color-sidebar-text);
}

.md-nav__list--secondary .md-nav__link--active {
  font-weight: 700;
}

/* Page title block: eyebrow + title, matching the app's page header. */
.md-content__inner {
  padding-bottom: 3rem;
}

.md-typeset h1 {
  font-size: 1.9rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--color-text-primary);
  margin-top: 0;
}

.md-typeset h2 {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
  margin-top: 2.4rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border-primary);
}

.md-typeset h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: 1.8rem;
}

.md-typeset h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-top: 1.6rem;
}

.md-typeset p,
.md-typeset li {
  line-height: 1.7;
}

.md-typeset hr {
  border-bottom: 1px solid var(--color-border-primary);
}

/* Table of contents */
.md-sidebar--secondary {
  background-color: transparent;
  border-left: none;
}

.md-nav--secondary .md-nav__link {
  font-size: 0.72rem;
  color: var(--color-text-tertiary);
}

.md-nav--secondary .md-nav__link--active,
.md-nav--secondary .md-nav__link:hover {
  color: var(--color-brand-primary);
  font-weight: 700;
}

/* =========================================================================
   5. Content surfaces
   ========================================================================= */

.md-typeset .grid.cards > ul > li {
  background-color: var(--color-widget-bg);
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xs);
  padding: 1.25rem 1.35rem;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: var(--color-border-secondary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.md-typeset .grid.cards > ul > li > p:first-child strong {
  color: var(--color-text-primary);
}

/* Panel style: <div class="panel" markdown> */
.rdh-panel {
  background-color: var(--color-widget-bg);
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xs);
  padding: 1.35rem 1.5rem;
  margin: 1.4rem 0;
}

.rdh-panel > :first-child {
  margin-top: 0;
}

.rdh-panel > :last-child {
  margin-bottom: 0;
}

.rdh-panel--accent {
  border-color: var(--rdh-accent-line);
  background-color: var(--rdh-accent-soft);
}

/* Eyebrow label above a heading, mirroring the app's page header. */
.rdh-eyebrow {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  margin: 0 0 0.2rem;
}

/* Landing-page hero: eyebrow overline, display heading, lede paragraph. */
.rdh-hero {
  margin-bottom: 1.8rem;
}

.rdh-hero h1 {
  font-size: 2.15rem;
  margin-top: 0.3rem;
  margin-bottom: 0.7rem;
}

.rdh-hero p:last-child {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  max-width: 46rem;
  margin-bottom: 0;
}

/* Hero call-to-action row: primary docs CTA plus a GitHub escape hatch. */
.rdh-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.5rem 0 1.8rem;
}

.rdh-hero-actions .md-button {
  margin: 0;
}

.rdh-hero-actions .md-button--secondary {
  display: inline-flex;
  align-items: center;
}

/* Steps / numbered cards used by the quickstart page. */
.md-typeset .rdh-steps {
  counter-reset: rdh-step;
}

.md-typeset .rdh-steps > ol {
  list-style: none;
  padding-left: 0;
  margin-left: 0;
}

.md-typeset .rdh-steps > ol > li {
  counter-increment: rdh-step;
  position: relative;
  padding: 0.9rem 0 0.9rem 2.9rem;
  margin: 0.7rem 0;
  background-color: var(--color-widget-bg);
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xs);
}

.md-typeset .rdh-steps > ol > li::before {
  content: counter(rdh-step);
  position: absolute;
  left: 1rem;
  top: 0.85rem;
  width: 1.45rem;
  height: 1.45rem;
  display: grid;
  place-items: center;
  border-radius: 9999px;
  background-color: var(--color-brand-primary);
  color: var(--color-brand-accent-contrast);
  font-size: 0.72rem;
  font-weight: 700;
}

.md-typeset .rdh-steps > ol > li > strong:first-child {
  color: var(--color-text-primary);
}

/* =========================================================================
   6. Tables
   ========================================================================= */

.md-typeset table:not([class]) {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xs);
  background-color: var(--color-widget-bg);
  font-size: 0.82rem;
  display: table;
}

.md-typeset table:not([class]) th {
  background-color: var(--color-widget-header-bg);
  padding: 0.6rem 0.85rem;
  text-align: left;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  border-bottom: 1px solid var(--color-widget-border);
  white-space: nowrap;
}

.md-typeset table:not([class]) td {
  padding: 0.55rem 0.85rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid
    color-mix(in srgb, var(--color-border-primary) 45%, transparent);
  vertical-align: top;
}

.md-typeset table:not([class]) tbody tr:last-child td {
  border-bottom: none;
}

.md-typeset table:not([class]) tbody tr:nth-child(even) {
  background-color: color-mix(
    in srgb,
    var(--color-bg-tertiary) 40%,
    transparent
  );
}

.md-typeset table:not([class]) tbody tr:hover {
  background-color: var(--color-bg-hover);
}

.md-typeset table:not([class]) code {
  white-space: nowrap;
}

/* =========================================================================
   7. Admonitions
   ========================================================================= */

.md-typeset .admonition,
.md-typeset details {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-brand-primary);
  box-shadow: var(--shadow-2xs);
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
}

.md-typeset .admonition > .admonition-title,
.md-typeset details > summary {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.md-typeset .admonition > .admonition-title::before,
.md-typeset details > summary::before {
  background-color: var(--color-brand-primary);
}

.md-typeset .admonition.note,
.md-typeset .admonition.info,
.md-typeset .admonition.tip {
  border-left-color: var(--color-brand-primary);
}

.md-typeset .admonition.note > .admonition-title::before,
.md-typeset .admonition.info > .admonition-title::before,
.md-typeset .admonition.tip > .admonition-title::before {
  background-color: var(--color-brand-primary);
}

.md-typeset .admonition.warning {
  border-left-color: var(--color-brand-warning);
}

.md-typeset .admonition.warning > .admonition-title::before {
  background-color: var(--color-brand-warning);
}

.md-typeset .admonition.danger,
.md-typeset .admonition.abstract {
  border-left-color: var(--color-brand-danger);
}

.md-typeset .admonition.danger > .admonition-title::before,
.md-typeset .admonition.abstract > .admonition-title::before {
  background-color: var(--color-brand-danger);
}

.md-typeset .admonition.success,
.md-typeset .admonition.example {
  border-left-color: var(--color-brand-success);
}

.md-typeset .admonition.success > .admonition-title::before,
.md-typeset .admonition.example > .admonition-title::before {
  background-color: var(--color-brand-success);
}

.md-typeset .admonition > :last-child {
  margin-bottom: 0;
}

/* =========================================================================
   8. Code blocks
   ========================================================================= */

.md-typeset pre > code {
  font-size: 0.78rem;
  line-height: 1.6;
}

.md-typeset code {
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-tertiary);
  border: 1px solid
    color-mix(in srgb, var(--color-border-primary) 60%, transparent);
  padding: 0.1em 0.35em;
  color: var(--color-text-primary);
}

.md-typeset pre > code {
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xs);
  padding: 0.9rem 1rem;
}

.md-typeset .highlight {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.md-typeset .highlight > pre {
  margin: 0;
}

.md-typeset .highlight:focus-within {
  box-shadow: 0 0 0 3px var(--rdh-accent-soft);
}

.md-typeset .md-clipboard {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-sm);
  color: var(--color-text-tertiary);
}

.md-typeset .md-clipboard:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-brand-primary);
  border-color: var(--rdh-accent-line);
}

/* Tabbed code blocks */
.md-typeset .tabbed-set {
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2xs);
  background-color: var(--color-widget-bg);
}

.md-typeset .tabbed-block > .highlight {
  border: none;
  border-radius: 0;
}

.md-typeset .tabbed-labels {
  background-color: var(--color-widget-header-bg);
  border-bottom: 1px solid var(--color-widget-border);
  padding: 0 0.4rem;
}

.md-typeset .tabbed-labels a {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  padding: 0.55rem 0.7rem;
}

.md-typeset .tabbed-labels a:hover {
  color: var(--color-text-primary);
}

.md-typeset .tabbed-labels .is-active a {
  color: var(--color-brand-primary);
  border-bottom: 2px solid var(--color-brand-primary);
}

.md-typeset kbd {
  border: 1px solid var(--color-border-secondary);
  border-bottom-width: 2px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  font-family: var(--font-app-mono);
  font-size: 0.68rem;
  padding: 0.08rem 0.35rem;
}

/* =========================================================================
   9. Buttons, badges, media
   ========================================================================= */

.md-typeset a.md-button {
  border-radius: var(--radius-xl);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.55rem 1.1rem;
  box-shadow: var(--shadow-2xs);
}

.md-typeset a.md-button--primary {
  background-color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: var(--color-brand-accent-contrast);
}

.md-typeset a.md-button--primary:is(:hover, :focus) {
  background-color: var(--color-brand-primary-hover);
  border-color: var(--color-brand-primary-hover);
}

.md-typeset a.md-button--secondary {
  background-color: var(--color-widget-bg);
  border-color: var(--color-widget-border);
  color: var(--color-text-primary);
}

.md-typeset a.md-button:is(:hover, :focus) {
  box-shadow: var(--shadow-md), 0 0 0 3px var(--rdh-accent-soft);
}

/* Badge pills, matching .badge-pill in the app. */
.md-typeset .rdh-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 9999px;
  border: 1px solid var(--rdh-accent-line);
  background-color: var(--rdh-accent-soft);
  padding: 0.12rem 0.6rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  white-space: nowrap;
}

.md-typeset .rdh-badge--success {
  border-color: color-mix(in srgb, var(--color-brand-success) 30%, transparent);
  background-color: color-mix(in srgb, var(--color-brand-success) 12%, transparent);
  color: var(--color-brand-success);
}

.md-typeset .rdh-badge--warning {
  border-color: color-mix(in srgb, var(--color-brand-warning) 30%, transparent);
  background-color: color-mix(in srgb, var(--color-brand-warning) 12%, transparent);
  color: var(--color-brand-warning);
}

.md-typeset .rdh-badge--neutral {
  border-color: var(--color-border-primary);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

/* Screenshots and demo recordings. */
.md-typeset figure,
.rdh-figure {
  margin: 1.6rem 0;
  text-align: center;
}

.md-typeset img,
.rdh-figure img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-widget-bg);
  box-shadow: var(--shadow-lg);
  transition:
    box-shadow var(--transition-normal),
    transform var(--transition-normal);
}

.md-typeset img:hover,
.rdh-figure img:hover {
  box-shadow: var(--shadow-lg), 0 0 0 4px var(--rdh-accent-soft);
}

.md-typeset figcaption,
.rdh-figure figcaption {
  margin-top: 0.7rem;
  color: var(--color-text-tertiary);
  font-size: 0.78rem;
  font-style: normal;
}

.rdh-figure img {
  width: 100%;
}

.rdh-figure--compact img {
  max-width: 30rem;
}

.rdh-gallery {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  margin: 1.6rem 0;
}

.rdh-gallery figure {
  margin: 0;
}

.rdh-gallery figcaption strong {
  display: block;
  color: var(--color-text-primary);
  font-size: 0.8rem;
  margin-bottom: 0.15rem;
}

/* Blockquote used for callouts in prose. */
.md-typeset blockquote {
  border-left: 3px solid var(--color-brand-primary);
  background-color: var(--color-bg-tertiary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 0.7rem 1rem;
  color: var(--color-text-secondary);
}

.md-typeset blockquote > :last-child {
  margin-bottom: 0;
}

/* Task lists */
.md-typeset .task-list-item {
  list-style-type: none;
}

.md-typeset .task-list-control .task-list-indicator::before {
  border-radius: var(--radius-sm);
  border-color: var(--color-border-secondary);
  background-color: var(--color-bg-tertiary);
}

.md-typeset .task-list-control input:checked + .task-list-indicator::before {
  background-color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

/* Footnote / definition styling */
.md-typeset dl dt {
  font-weight: 700;
  color: var(--color-text-primary);
}

.md-typeset dl dd {
  border-left: 2px solid var(--color-border-primary);
  padding-left: 0.9rem;
  color: var(--color-text-secondary);
}

/* =========================================================================
   10. Mermaid diagrams
   ========================================================================= */

.md-typeset .mermaid {
  background-color: var(--color-widget-bg);
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xs);
  padding: 1.1rem;
  margin: 1.4rem 0;
  text-align: center;
  overflow-x: auto;
}

.md-typeset .mermaid svg {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}

.mermaid-loading {
  color: var(--color-text-tertiary);
  font-size: 0.78rem;
}

/* =========================================================================
   11. Theme picker
   ========================================================================= */

.rdh-themes {
  position: relative;
  display: flex;
  align-items: center;
}

.rdh-themes__button {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  height: 2rem;
  padding: 0 0.55rem;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
}

.rdh-themes__button:hover {
  background-color: var(--color-bg-hover);
  border-color: var(--color-border-secondary);
  color: var(--color-text-primary);
}

.rdh-themes__button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-brand-primary),
    0 0 0 4px var(--color-bg-primary);
}

.rdh-themes__swatch {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 9999px;
  border: 1px solid
    color-mix(in srgb, var(--color-border-primary) 70%, transparent);
  flex: 0 0 auto;
}

.rdh-themes__menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.4rem);
  z-index: 30;
  width: 15rem;
  max-height: 70vh;
  overflow-y: auto;
  padding: 0.4rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-widget-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.rdh-themes__menu[hidden] {
  display: none;
}

.rdh-themes__heading {
  padding: 0.4rem 0.55rem 0.25rem;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.rdh-themes__option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.42rem 0.55rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.rdh-themes__option:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.rdh-themes__option[aria-checked="true"] {
  background-color: var(--color-sidebar-item-active);
  border-color: var(--rdh-accent-line);
  color: var(--color-sidebar-text-active);
  font-weight: 700;
}

.rdh-themes__option-body {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
  min-width: 0;
}

.rdh-themes__option-desc {
  font-size: 0.62rem;
  font-weight: 400;
  color: var(--color-text-tertiary);
  line-height: 1.35;
}

.rdh-themes__preview {
  display: flex;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 9999px;
  border: 1px solid var(--color-border-primary);
}

.rdh-themes__preview span {
  width: 0.4rem;
  height: 0.9rem;
}

/* =========================================================================
   12. Search, footer, 404
   ========================================================================= */

.md-footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-primary);
}

.md-footer__link {
  color: var(--color-text-secondary);
  font-weight: 600;
}

.md-footer__link:hover {
  color: var(--color-brand-primary);
}

.md-footer-meta {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-primary);
}

.md-footer-meta__inner {
  border-top: none;
}

.md-copyright {
  font-size: 0.72rem;
  color: var(--color-text-tertiary);
}

.rdh-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  margin-top: 0.5rem;
}

.rdh-footer-links a {
  color: var(--color-text-secondary);
  font-weight: 600;
}

.rdh-footer-links a:hover {
  color: var(--color-brand-primary);
}

.rdh-footer-madewith {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.68rem;
  color: var(--color-text-tertiary);
}

.rdh-footer-madewith a {
  color: var(--color-text-tertiary);
  text-decoration: underline;
}

.rdh-404 {
  text-align: center;
  padding: 2.5rem 0 1rem;
}

.rdh-404__code {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--color-brand-primary);
  margin: 0 0 0.6rem;
}

.rdh-404__lede {
  color: var(--color-text-tertiary);
  max-width: 34rem;
  margin: 0 auto 1.6rem;
}

/* =========================================================================
   13. Responsive + reduced motion
   ========================================================================= */

@media screen and (max-width: 76.2344em) {
  .md-typeset h1 {
    font-size: 1.7rem;
  }
}

@media screen and (max-width: 44.9844em) {
  .md-typeset h1 {
    font-size: 1.45rem;
  }

  .md-typeset h2 {
    font-size: 1.15rem;
  }

  .md-typeset table:not([class]) {
    font-size: 0.76rem;
  }

  .md-typeset table:not([class]) th,
  .md-typeset table:not([class]) td {
    padding: 0.45rem 0.6rem;
  }

  .rdh-themes__button .rdh-themes__label {
    display: none;
  }

  .rdh-gallery {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .md-typeset .grid.cards > ul > li:hover {
    transform: none;
  }
}

/* Print */
@media print {
  .md-header,
  .md-sidebar,
  .md-footer,
  .md-content__button {
    display: none !important;
  }
}