/* RetroBIOS theme on top of mkdocs-material.

   Classes the generator and the wiki pages can use:
   .rb-lead            first paragraph under a page title
   .rb-level-*         level label (start, setup, explore, reference, contribute)
   .rb-page-header     logo or image beside the title block of an entity page
   .rb-cards, .rb-card card grid without Material's list markup
   .grid.cards         Material card grid, restyled here
   .rb-card-logo       40 px logo tile inside a card
   .rb-steps           ordered list drawn as numbered steps
   .rb-terminal        wraps a code block that shows terminal output
   .rb-cmd             wraps a command that must wrap instead of scrolling
   code.rb-path        a folder path shown as a chip
   .rb-figure          a generated diagram (scripts/sitediagrams.py)
   .rb-bar             inline coverage bar, width from --v
*/

:root {
  --rb-primary: #3b3f7a;
  --rb-primary-dark: #2b2e5c;
  --rb-accent: #b42318;
  --rb-link: #273c8f;
  --rb-fg: rgba(0, 0, 0, 0.87);
  --rb-surface: #f5f6fa;
  --rb-border: #e0e3eb;
  --rb-border-strong: #b8bdcc;
  --rb-text-secondary: #546e7a;
  --rb-ok-fg: #1b5e20;
  --rb-ok-bg: #e8f5e9;
  --rb-warn-fg: #a33f00;
  --rb-warn-bg: #fff3e0;
  --rb-err-fg: #b71c1c;
  --rb-err-bg: #ffebee;
  --rb-info-fg: #0d47a1;
  --rb-info-bg: #e3f2fd;
  --rb-muted-fg: #455a64;
  --rb-muted-bg: #eceff1;
  --rb-level-start: #1b5e20;
  --rb-level-setup: #0d47a1;
  --rb-level-explore: #6a1b9a;
  --rb-level-reference: #455a64;
  --rb-level-contribute: #a33f00;
  --rb-terminal-bg: #1b1d2e;
  --rb-terminal-fg: #e6e6f0;
  --rb-terminal-label: #9aa0c3;
  --rb-diagram-fill: #f5f6fa;
  --rb-diagram-stroke: #8c92ac;
  --rb-diagram-accent: #3b3f7a;
  --md-code-font: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

[data-md-color-scheme="slate"] {
  --rb-accent: #ff9a8f;
  --rb-link: #aebcff;
  --rb-fg: #e3e4ee;
  --rb-surface: #252838;
  --rb-border: #3a3d52;
  --rb-border-strong: #5a5e7a;
  --rb-text-secondary: #a6adc8;
  --rb-ok-fg: #a5d6a7;
  --rb-ok-bg: #1b3a1f;
  --rb-warn-fg: #ffcc80;
  --rb-warn-bg: #7a2e00;
  --rb-err-fg: #ef9a9a;
  --rb-err-bg: #7f1414;
  --rb-info-fg: #90caf9;
  --rb-info-bg: #0d2a55;
  --rb-muted-fg: #cfd8dc;
  --rb-muted-bg: #37474f;
  --rb-level-start: #a5d6a7;
  --rb-level-setup: #90caf9;
  --rb-level-explore: #ce93d8;
  --rb-level-reference: #cfd8dc;
  --rb-level-contribute: #ffcc80;
  --rb-terminal-bg: #12131c;
  --rb-diagram-fill: #252838;
  --rb-diagram-stroke: #7c82a3;
  --rb-diagram-accent: #aebcff;
}

/* Colour roles. The header keeps the brand indigo in both schemes: the
   lighter indigo it used in dark mode left the tab labels at 3.5:1. */
[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--rb-primary);
  --md-primary-fg-color--light: #4a4e8a;
  --md-primary-fg-color--dark: var(--rb-primary-dark);
  --md-accent-fg-color: var(--rb-accent);
  --md-typeset-a-color: var(--rb-link);
  /* Comments and punctuation sat at 4.47:1 on the code background. */
  --md-code-hl-comment-color: #5c5c5c;
  --md-code-hl-generic-color: #5c5c5c;
  --md-code-hl-variable-color: #5c5c5c;
  --md-code-hl-operator-color: #5c5c5c;
  --md-code-hl-punctuation-color: #5c5c5c;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color: var(--rb-primary-dark);
  --md-primary-fg-color--light: var(--rb-primary);
  --md-primary-fg-color--dark: #1f2147;
  --md-accent-fg-color: var(--rb-accent);
  --md-accent-bg-color: #1e2129;
  --md-typeset-a-color: var(--rb-link);
  --md-code-hl-constant-color: #b39ddb;
}

/* Type scale: the page title is the strongest heading on the page. */
.md-typeset h1 {
  color: var(--md-default-fg-color);
  font-size: 2em;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 0.9em;
}

.md-typeset h2 {
  font-size: 1.45em;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-top: 2em;
}

.md-typeset h3 {
  font-size: 1.15em;
  font-weight: 600;
}

.md-typeset h4 {
  font-weight: 600;
}

.md-typeset .rb-lead {
  font-size: 1.05em;
  line-height: 1.55;
  max-width: 44em;
}

/* Level label under a page title */
.rb-level {
  display: inline-block;
  margin: 0 0 0.8rem;
  padding: 0.05rem 0.45rem;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.6;
  color: var(--rb-level-reference);
}

.rb-level-start { color: var(--rb-level-start); }
.rb-level-setup { color: var(--rb-level-setup); }
.rb-level-explore { color: var(--rb-level-explore); }
.rb-level-reference { color: var(--rb-level-reference); }
.rb-level-contribute { color: var(--rb-level-contribute); }

/* Header block of platform, system and emulator pages */
.rb-page-header {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0.4rem 1rem;
  align-items: center;
  margin: 0 0 1.2rem;
}

.rb-page-header > :first-child img,
.rb-page-header > img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.md-typeset .rb-page-header h1 {
  margin: 0;
}

.rb-page-header p {
  margin: 0.2rem 0 0;
}

/* A page that names its logo next to the title floats it right; the logo
   keeps its own box instead of shifting the counters below. */
.md-typeset img[align="right"] {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin: 0 0 0.6rem 1rem;
  padding: 4px;
  border: 1px solid var(--rb-border);
  border-radius: 4px;
  background: #fff;
}

/* Logos are drawn for a light background: they keep one in dark mode. */
.md-typeset img[src*="assets/logos/"] {
  padding: 2px;
  border-radius: 2px;
  background: #fff;
}

/* Headline figures, read as one line of numbers */
.rb-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
  gap: 0.6rem 1.5rem;
  margin: 1rem 0 1.5rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--rb-border);
  border-radius: 4px;
  background: var(--rb-surface);
}

.md-typeset .rb-stat p {
  margin: 0;
}

.rb-stat .rb-stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  display: block;
  font-variant-numeric: tabular-nums;
}

.rb-stat .rb-stat-label {
  font-size: 0.75rem;
  color: var(--rb-text-secondary);
  display: block;
}

.rb-badge {
  display: inline-block;
  padding: 0 0.4em;
  border-radius: 2px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.rb-badge-success { background: var(--rb-ok-bg); color: var(--rb-ok-fg); }
.rb-badge-warning { background: var(--rb-warn-bg); color: var(--rb-warn-fg); }
.rb-badge-danger { background: var(--rb-err-bg); color: var(--rb-err-fg); }
.rb-badge-info { background: var(--rb-info-bg); color: var(--rb-info-fg); }
.rb-badge-muted { background: var(--rb-muted-bg); color: var(--rb-muted-fg); }

/* A link inside a badge keeps the badge's tested colour pair. */
.md-typeset .rb-badge a:not(.md-button),
.md-typeset a.rb-badge {
  color: inherit;
}

/* Inline code inside a link reads as a link in both schemes. */
.md-typeset a code {
  color: var(--rb-link);
}

/* Tables */
.md-typeset table:not([class]) {
  font-variant-numeric: tabular-nums;
}

.md-typeset table:not([class]) th {
  position: sticky;
  top: 0;
  z-index: 1;
  font-weight: 600;
}

.md-typeset table:not([class]) th,
.md-typeset table:not([class]) td {
  padding: 0.55em 0.9em;
}

.md-typeset__scrollwrap {
  margin: 1rem 0;
}

.rb-timestamp {
  font-size: 0.8rem;
  color: var(--rb-text-secondary);
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rb-border);
}

/* One block per file on emulator and system pages, separated by a rule */
.rb-file-entry,
.rb-sys-file {
  border-top: 1px solid var(--rb-border);
  padding: 0.75rem 0 0.25rem;
  margin: 0;
}

.rb-file-entry > p:first-child,
.rb-sys-file > p:first-child {
  margin-top: 0;
}

.rb-file-header code {
  font-size: 0.95rem;
  font-weight: 700;
}

/* A card's title is a heading so the search lands on it, set as body text */
.md-typeset .rb-file-title {
  margin: 0 0 0.3rem;
  font-size: inherit;
  font-weight: 400;
  letter-spacing: normal;
  scroll-margin-top: 4rem;
}

.md-typeset .rb-file-title code {
  font-weight: 700;
}

/* Lines the search skips continue the card's list */
.rb-search-skip > ul {
  margin-top: 0.1rem;
}

.rb-file-entry ul,
.rb-sys-file ul {
  margin: 0.3rem 0 0;
  padding-left: 1.2rem;
  font-size: 0.85rem;
}

.rb-file-entry li,
.rb-sys-file li {
  margin: 0.1rem 0;
}

/* Hashes are printed whole so the search finds them, and wrap on phones */
.rb-hash {
  font-family: var(--md-code-font);
  font-size: 0.78rem;
  color: var(--rb-text-secondary);
  overflow-wrap: anywhere;
}

/* Key and value cards: the header row is empty, so it is not drawn and
   not announced. */
.rb-meta-card table {
  margin: 1rem 0 !important;
}

.rb-meta-card thead,
.md-typeset table thead:not(:has(th:not(:empty))) {
  display: none;
}

.rb-meta-card td {
  overflow-wrap: anywhere;
}

.rb-meta-card td:first-child {
  font-weight: 600;
  color: var(--rb-text-secondary);
  white-space: nowrap;
  width: 140px;
}

.md-typeset table .md-button {
  font-size: 0.75rem;
  min-height: 44px;
  padding: 0.55em 0.8em;
}

/* Buttons. The dark scheme draws them in the link colour: the header indigo
   would sit at 3:1 on the page. */
[data-md-color-scheme="slate"] .md-typeset .md-button {
  color: var(--rb-link);
  border-color: var(--rb-link);
}

[data-md-color-scheme="slate"] .md-typeset .md-button--primary {
  background-color: var(--rb-link);
  color: #1e2129;
}

[data-md-color-scheme="slate"] .md-typeset .md-button:is(:hover, :focus) {
  background-color: var(--rb-accent);
  border-color: var(--rb-accent);
  color: #1e2129;
}

.md-typeset a:not(.md-button):not(.headerlink):not(.rb-badge) {
  color: var(--rb-link);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.14em;
}

.md-typeset a:not(.md-button):not(.headerlink):hover {
  text-decoration-thickness: 0.14em;
}

:where(a, button, input, select, textarea, label, [tabindex]):focus-visible {
  outline: 3px solid var(--rb-accent);
  outline-offset: 3px;
}

.md-typeset .md-button,
.md-typeset button,
.md-typeset input,
.md-typeset select {
  min-height: 44px;
}

.rb-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.rb-table-filter {
  display: grid;
  grid-template-columns: minmax(14rem, 28rem) auto;
  gap: 0.35rem 0.8rem;
  align-items: end;
  margin: 1rem 0 0.45rem;
}

.rb-table-filter label {
  grid-column: 1 / -1;
  color: var(--rb-text-secondary);
  font-size: 0.78rem;
  font-weight: 700;
}

.rb-table-filter input {
  width: 100%;
  border: 1px solid var(--rb-text-secondary);
  border-radius: 2px;
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  padding: 0.55rem 0.75rem;
  font: inherit;
}

.rb-table-filter-count {
  align-self: center;
  color: var(--rb-text-secondary);
  font-size: 0.8rem;
  white-space: nowrap;
}

.md-typeset__scrollwrap[role="region"]:focus-visible {
  outline: 3px solid var(--rb-accent);
  outline-offset: 2px;
}

/* Admonitions: one meaning per colour.
   blue   note, info, abstract, example, question, quote: background
   teal   tip: a shortcut
   green  success: what it looks like when it worked
   orange warning: a risk of losing data or using the wrong file
   red    danger, failure, bug: something is broken or refused */
.md-typeset :is(.admonition, details):is(.info, .abstract, .example, .question, .quote, .note) {
  border-color: #448aff;
}

.md-typeset :is(.info, .abstract, .example, .question, .quote, .note) > :is(.admonition-title, summary) {
  background-color: rgba(68, 138, 255, 0.1);
}

.md-typeset :is(.info, .abstract, .example, .question, .quote, .note) > :is(.admonition-title, summary)::before {
  background-color: #448aff;
  -webkit-mask-image: var(--md-admonition-icon--info);
  mask-image: var(--md-admonition-icon--info);
}

.md-typeset :is(.admonition, details).tip {
  border-color: #00897b;
}

.md-typeset .tip > :is(.admonition-title, summary) {
  background-color: rgba(0, 137, 123, 0.1);
}

.md-typeset .tip > :is(.admonition-title, summary)::before {
  background-color: #00897b;
  -webkit-mask-image: var(--rb-icon-shortcut);
  mask-image: var(--rb-icon-shortcut);
}

.md-typeset :is(.admonition, details):is(.danger, .failure, .bug, .error) {
  border-color: #d32f2f;
}

.md-typeset :is(.danger, .failure, .bug, .error) > :is(.admonition-title, summary) {
  background-color: rgba(211, 47, 47, 0.1);
}

.md-typeset :is(.danger, .failure, .bug, .error) > :is(.admonition-title, summary)::before {
  background-color: #d32f2f;
  -webkit-mask-image: var(--md-admonition-icon--danger);
  mask-image: var(--md-admonition-icon--danger);
}

:root {
  --rb-icon-shortcut: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2a7 7 0 0 0-7 7c0 2.38 1.19 4.47 3 5.74V17a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1v-2.26c1.81-1.27 3-3.36 3-5.74a7 7 0 0 0-7-7M9 21a1 1 0 0 0 1 1h4a1 1 0 0 0 1-1v-1H9z"/></svg>');
}

/* Code: shell commands wrap so the whole command shows on a phone, and the
   copy button keeps its own column instead of covering the end. */
.md-typeset :is(.language-sh, .language-bash, .language-shell, .language-console,
  .language-powershell, .language-ps1, .language-pwsh, .language-cmd, .language-bat) pre > code,
.md-typeset .rb-cmd pre > code {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  padding-right: 2.6rem;
}

/* Terminal output: what the screen shows, not something to type */
.md-typeset .rb-terminal pre,
.md-typeset .rb-terminal pre > code {
  background: var(--rb-terminal-bg);
  color: var(--rb-terminal-fg);
}

.md-typeset .rb-terminal pre {
  border: 1px solid var(--rb-border);
  border-radius: 4px;
}

.md-typeset .rb-terminal pre::before {
  content: "Terminal output";
  display: block;
  padding: 0.5rem 1.2em 0;
  font: 600 0.65rem var(--md-text-font-family);
  color: var(--rb-terminal-label);
}

.md-typeset .rb-terminal .md-code__button {
  color: var(--rb-terminal-label);
}

/* Numbered steps */
.md-typeset ol.rb-steps,
.md-typeset .rb-steps > ol {
  counter-reset: rb-step;
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

.md-typeset ol.rb-steps > li,
.md-typeset .rb-steps > ol > li {
  counter-increment: rb-step;
  position: relative;
  margin: 0 0 1.2rem;
  padding-left: 2.6rem;
  min-height: 1.8rem;
}

.md-typeset ol.rb-steps > li::before,
.md-typeset .rb-steps > ol > li::before {
  content: counter(rb-step);
  position: absolute;
  top: 0;
  left: 0;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 4px;
  background: var(--md-primary-fg-color);
  color: #fff;
  font-weight: 700;
  line-height: 1.8rem;
  text-align: center;
}

[data-md-color-scheme="slate"] .md-typeset ol.rb-steps > li::before,
[data-md-color-scheme="slate"] .md-typeset .rb-steps > ol > li::before {
  background: var(--rb-link);
  color: #1e2129;
}

/* Card grids. Material's grid cards keep their markup; the hover shadow
   gives way to a stronger border. */
.md-typeset .grid.cards {
  --md-shadow-z2: 0 0 #0000;
}

.md-typeset .grid.cards > :is(ul, ol) > li,
.md-typeset .grid > .card {
  border: 1px solid var(--rb-border);
  border-radius: 4px;
}

.md-typeset .grid.cards > :is(ul, ol) > li:is(:hover, :focus-within),
.md-typeset .grid > .card:is(:hover, :focus-within) {
  border-color: var(--rb-border-strong);
}

.rb-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
  gap: 0.8rem;
  margin: 1rem 0 1.5rem;
}

.rb-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.8rem;
  border: 1px solid var(--rb-border);
  border-radius: 4px;
  background: var(--md-default-bg-color);
}

.rb-card:is(:hover, :focus-within) {
  border-color: var(--rb-border-strong);
}

.md-typeset .rb-card p {
  margin: 0;
}

.md-typeset .rb-card .md-button {
  margin-top: auto;
  align-self: flex-start;
}

.md-typeset .rb-card-logo,
.md-typeset .grid.cards img.rb-card-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  padding: 4px;
  border: 1px solid var(--rb-border);
  border-radius: 4px;
  background: #fff;
  vertical-align: middle;
}

/* Path chip */
.md-typeset code.rb-path {
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--rb-border);
  border-radius: 2px;
  font-size: 0.8em;
  overflow-wrap: anywhere;
}

/* Content tabs (operating systems): the selected tab reads clearly. */
.md-typeset .tabbed-labels > label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--rb-text-secondary);
}

.md-typeset .tabbed-set > input:checked + label,
.md-typeset .tabbed-labels > label:hover {
  color: var(--rb-link);
}

.md-typeset .tabbed-labels::before {
  background: var(--rb-link);
}

/* Inline coverage bar beside a number */
.rb-bar {
  display: inline-block;
  width: 5rem;
  height: 0.4rem;
  margin-right: 0.4rem;
  border-radius: 2px;
  background: var(--rb-border);
  vertical-align: middle;
}

.rb-bar > span {
  display: block;
  width: var(--v, 0%);
  height: 100%;
  border-radius: 2px;
  background: var(--rb-ok-fg);
}

/* Diagrams written by scripts/sitediagrams.py. Text takes the page font and
   colour, boxes take the theme surface, so the drawing follows the palette
   toggle. Each diagram carries a wide and a narrow layout. */
.md-typeset .rb-figure {
  margin: 1.2rem 0 1.6rem;
}

.md-typeset .rb-figure svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 52rem;
  color: var(--md-default-fg-color);
}

.md-typeset .rb-figure figcaption {
  max-width: 44em;
  margin: 0.4rem 0 0;
  font-size: 0.75rem;
  font-style: normal;
  color: var(--rb-text-secondary);
  text-align: left;
}

.rb-diagram text {
  font-family: var(--md-text-font-family);
  fill: currentColor;
}

.rb-diagram .rb-d-box {
  fill: var(--rb-diagram-fill);
  stroke: var(--rb-diagram-stroke);
}

.rb-diagram .rb-d-accent {
  stroke: var(--rb-diagram-accent);
}

.rb-diagram .rb-d-line {
  stroke: var(--rb-diagram-stroke);
}

.rb-diagram .rb-d-head {
  fill: var(--rb-diagram-stroke);
}

.rb-diagram .rb-d-num {
  fill: var(--rb-diagram-accent);
}

.rb-diagram .rb-d-numtext {
  fill: var(--md-default-bg-color);
}

.rb-diagram .rb-d-muted {
  fill: var(--rb-text-secondary);
}

.rb-diagram-narrow {
  display: none !important;
}

@media (max-width: 37.5em) {
  .rb-diagram-wide {
    display: none !important;
  }

  .rb-diagram-narrow {
    display: block !important;
  }
}

/* The sidebar title stays legible over the list scrolling under it. */
@media (min-width: 76.25em) {
  .md-nav--primary > .md-nav__title,
  .md-nav--secondary > .md-nav__title {
    background: var(--md-default-bg-color);
    border-bottom: 1px solid var(--rb-border);
  }
}

/* Material's compact footer defaults sit just below WCAG AA on the dark bar. */
.md-footer-meta .md-copyright {
  color: #b5b5b5;
}

.md-footer-meta.md-typeset .md-copyright a {
  color: #b8c6ff !important;
}

/* 404 page */
.rb-notfound-search {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.55em 1.2em;
  border: 1px solid currentColor;
  border-radius: 2px;
  color: var(--rb-link);
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 44.984375em) {
  /* Tables with an action column become one block per row, so the button
     is never behind a horizontal scroll (site.js marks them). */
  .md-typeset__table:has(table[data-rb-stack]) {
    display: block;
  }

  .md-typeset table[data-rb-stack] {
    display: block;
    width: 100%;
  }

  .md-typeset table[data-rb-stack] thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .md-typeset table[data-rb-stack] tbody,
  .md-typeset table[data-rb-stack] tr {
    display: block;
  }

  .md-typeset table[data-rb-stack] tr {
    padding: 0.5rem 0;
    border-top: 1px solid var(--rb-border);
  }

  .md-typeset table[data-rb-stack] td {
    display: block;
    position: relative;
    min-height: 1.6rem;
    padding: 0.25rem 0.6rem 0.25rem 8.4rem;
    border: 0;
    text-align: left !important;
    overflow-wrap: anywhere;
  }

  .md-typeset table[data-rb-stack] td::before {
    content: attr(data-label);
    position: absolute;
    top: 0.25rem;
    left: 0.6rem;
    width: 7.4rem;
    font-weight: 600;
    color: var(--rb-text-secondary);
  }

  .md-typeset table[data-rb-stack] td .md-button {
    margin: 0 0.3rem 0.3rem 0;
  }

  .md-typeset table[data-rb-stack] td:empty {
    display: none;
  }

  /* Other wide tables scroll with their first column held in place. */
  .md-typeset table:not([class]):not([data-rb-stack]) :is(td, th):first-child {
    position: sticky;
    left: 0;
    max-width: 40vw;
    background: var(--md-default-bg-color);
    overflow-wrap: anywhere;
  }

  .md-typeset table:not([class]):not([data-rb-stack]) th:first-child {
    z-index: 2;
  }

  /* On a phone every command wraps: the end of a one-liner (the "| sh"
     that makes it work) is never off-screen. Terminal output keeps its
     columns and scrolls. */
  .md-typeset pre > code {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    padding-right: 2.6rem;
  }

  .md-typeset :is(.rb-terminal, .language-text) pre > code {
    white-space: pre;
    overflow-wrap: normal;
  }

  /* Text on reference pages stays at 12 px or more on a phone. */
  .rb-file-entry ul,
  .rb-sys-file ul,
  .rb-hash {
    font-size: 0.75rem;
  }

  .rb-page-header {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .rb-table-filter {
    grid-template-columns: 1fr;
  }

  .rb-table-filter label {
    grid-column: auto;
  }

  .rb-stats {
    grid-template-columns: repeat(auto-fit, minmax(5.5rem, 1fr));
  }

  .rb-stat .rb-stat-value {
    font-size: 1.1rem;
  }
}

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

/* A file block can be cited by URL: its link shows on hover, and the block a
   link lands on is marked. */
.rb-permalink {
  margin-left: 0.4rem;
  color: var(--md-default-fg-color--light, var(--rb-border));
  text-decoration: none;
  opacity: 0;
}
.rb-file-entry:hover .rb-permalink,
.rb-sys-file:hover .rb-permalink,
.rb-permalink:focus {
  opacity: 1;
}
.rb-file-entry:has(> .rb-file-title:target),
.rb-sys-file:has(> .rb-file-title:target) {
  background: var(--rb-surface);
}