/* Keep mdBook's navigation and controls; style their public HTML and theme tokens. */
:root {
  --sidebar-target-width: 285px;
  --content-max-width: 800px;
  --page-padding: clamp(18px, 4vw, 52px);
  --menu-bar-height: 58px;
  --code-font-size: 0.88em;
  --book-border: var(--table-border-color);
  --book-panel: var(--quote-bg);
  --book-muted: var(--sidebar-fg);
}

.light, html:not(.js) {
  --bg: #fff;
  --fg: #17263b;
  --sidebar-bg: #f1f6fa;
  --sidebar-fg: #34455c;
  --sidebar-active: #005d56;
  --sidebar-header-border-color: #13796e;
  --links: #006359;
  --icons: #495d76;
  --icons-hover: #005d56;
  --inline-code-color: #234360;
  --table-header-bg: #e6eef5;
  --table-border-color: #c5d3e0;
  --table-alternate-bg: #f5f8fb;
  --book-border: #d6e1eb;
  --book-panel: #f3f7fb;
  --book-accent-bg: #d8eee9;
  --book-button: #075b53;
  --book-button-text: #fff;
}

.navy {
  --bg: #101a2a;
  --fg: #e0eaf5;
  --sidebar-bg: #152238;
  --sidebar-fg: #bccbe0;
  --sidebar-active: #99f1e1;
  --sidebar-header-border-color: #79ddcd;
  --links: #92ebdb;
  --icons: #bacbe1;
  --icons-hover: #e9fff9;
  --inline-code-color: #c8dfff;
  --table-header-bg: #223752;
  --table-border-color: #394c66;
  --table-alternate-bg: #18253a;
  --searchresults-header-fg: #bccbe0;
  --book-border: #344760;
  --book-panel: #17263c;
  --book-accent-bg: #224b4b;
  --book-button: #9cf0e2;
  --book-button-text: #102925;
}

html {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

#mdbook-menu-bar {
  border-block-end-color: var(--book-border);
}

.menu-title {
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 720;
  letter-spacing: -0.025em;
}

.sidebar {
  border-inline-end: 1px solid var(--book-border);
}

.sidebar .sidebar-scrollbox {
  padding: 24px 18px;
}

.chapter li.part-title {
  color: var(--book-muted);
  font-size: 1.1rem;
  font-weight: 760;
  letter-spacing: 0.11em;
  margin-block: 18px 5px;
  text-transform: uppercase;
}

.chapter .chapter-link-wrapper a {
  border-radius: 6px;
  flex: 1;
  padding: 5px 8px;
}

.chapter .chapter-link-wrapper a.active {
  background: var(--book-accent-bg, var(--theme-hover));
  box-shadow: inset 3px 0 var(--sidebar-active);
  font-weight: 700;
}

.content main {
  font-size: 1.65rem;
  line-height: 1.72;
  padding-block: clamp(22px, 5vw, 48px) 32px;
}

.content main h1 {
  font-size: clamp(3rem, 5.5vw, 4.8rem);
  letter-spacing: -0.045em;
  line-height: 1.12;
  margin-block: 0 0.5em;
  text-wrap: balance;
}

.content main h2 {
  border-block-end: 1px solid var(--book-border);
  font-size: clamp(2rem, 3.7vw, 2.6rem);
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin-block: 1.75em 0.55em;
  padding-block-end: 0.35em;
}

.content main :is(h1, h2, h3) {
  scroll-margin-top: calc(var(--menu-bar-height) + 16px);
}

.content main a:not(.header):not([class]) {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

/* The built-in toolbar label is clickable; keep its native control tabbable. */
#mdbook-sidebar-toggle-anchor.hidden {
  display: block !important;
  position: absolute;
  width: 1px;
  height: 1px;
  clip-path: inset(50%);
  overflow: hidden;
}

:focus-visible,
#mdbook-sidebar-toggle-anchor:focus-visible ~ .page-wrapper #mdbook-sidebar-toggle {
  outline: 2px solid var(--links);
  outline-offset: 2px;
}

.content main pre {
  background: var(--book-panel);
  border: 1px solid var(--book-border);
  border-radius: 10px;
  margin-block: 1.25em;
}

.content main pre > code {
  background: transparent;
  line-height: 1.6;
  padding: 16px 18px;
}

.content main .table-wrapper {
  margin-block: 1.2em;
}

.content main table {
  font-size: 0.94em;
  width: 100%;
}

.content main table :is(th, td) {
  padding: 10px 12px;
  text-align: start;
  vertical-align: top;
}

.intro {
  background: var(--book-panel);
  border: 1px solid var(--book-border);
  border-radius: 14px;
  padding: clamp(18px, 4vw, 30px);
}

.intro p {
  margin-block: 0 0.8em;
}

.intro p:last-child {
  margin-block-end: 0;
}

.eyebrow {
  color: var(--links);
  font-size: 1.18rem;
  font-weight: 760;
  letter-spacing: 0.12em;
}

.lead {
  font-size: clamp(1.75rem, 3vw, 2.1rem);
  line-height: 1.5;
}

.content .primary-link:is(:link, :visited) {
  background: var(--book-button, var(--sidebar-bg));
  border-radius: 7px;
  color: var(--book-button-text, var(--links));
  display: inline-block;
  font-weight: 700;
  padding: 8px 14px;
  text-decoration: none;
}

.primary-link:hover,
.doc-grid a:hover strong {
  text-decoration: underline !important;
  text-underline-offset: 0.18em;
}

.doc-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 295px), 1fr));
  margin-block: 1.5em;
}

.content main .doc-grid a:not([class]) {
  background: var(--book-panel);
  border: 1px solid var(--book-border);
  border-radius: 9px;
  padding: 13px 16px;
  text-decoration: none;
}

.doc-grid a span {
  color: var(--fg);
  display: block;
  font-size: 0.92em;
}

.navy .content pre .hljs-attr {
  color: #c9e3ff;
}

@media (max-width: 540px) {
  .content main {
    padding-block-start: 22px;
  }

  .content main pre > code {
    padding: 12px;
  }

  .content main table {
    overflow-wrap: anywhere;
  }

  .content main table :is(th, td) {
    padding: 8px;
  }

  #rust-configuration ~ .table-wrapper:first-of-type th:first-child {
    width: 42%;
  }
}