/* Layout and document styles. Colours, type and spacing come from tokens.css; the header, footer and
   page defaults follow tercen-arandur/lattin (src/styles/base.css, src/layouts/Base.astro). */

:root {
  /* Layout widths are not in the design tokens yet; these are the only local values. */
  --layout-max-width: 1120px;
  --measure: 72ch;
  --nav-width: 240px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-family);
  font-size: var(--text-body-large-size);
  font-weight: var(--text-body-large-weight);
  line-height: var(--text-body-large-line-height);
  color: var(--color-on-surface);
  background: var(--color-surface);
}

a {
  color: var(--color-link);
}

a:hover {
  color: var(--color-link-hover);
}

:focus-visible {
  outline: var(--window-focus-ring-width) solid var(--color-primary);
  outline-offset: var(--window-focus-ring-offset);
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: 100%;
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* Header: logo on the left, the way back to the main site on the right. */

.site-header {
  border-bottom: var(--line-weight-subtle) solid var(--color-outline-variant);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm) var(--spacing-md);
  min-height: var(--window-toolbar-height);
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.site-header__home {
  display: inline-flex;
}

.site-header__back {
  font-size: var(--text-label-large-size);
  font-weight: var(--text-label-large-weight);
  line-height: var(--text-label-large-line-height);
  text-decoration: none;
}

.site-header__back:hover {
  text-decoration: underline;
}

/* Body: the document list, then the document. Side by side from 1024px. */

.site-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-xxl);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs) var(--spacing-md);
  margin: 0;
  padding: 0 0 var(--spacing-md);
  list-style: none;
  border-bottom: var(--line-weight-subtle) solid var(--color-outline-variant);
  font-size: var(--text-body-medium-size);
  line-height: var(--text-body-medium-line-height);
}

.site-nav__list a {
  color: var(--color-on-surface-variant);
  text-decoration: none;
}

.site-nav__list a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.site-nav__list a[aria-current='page'] {
  color: var(--color-primary);
  font-weight: var(--text-label-large-weight);
}

.site-main {
  min-width: 0;
}

@media (min-width: 1024px) {
  .site-body {
    flex-direction: row;
    gap: var(--spacing-xxl);
    padding-top: var(--spacing-xxl);
  }

  .site-nav {
    flex: 0 0 var(--nav-width);
  }

  .site-nav__list {
    position: sticky;
    top: var(--spacing-lg);
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: 0;
    border-bottom: 0;
  }

  .site-main {
    flex: 1;
  }
}

/* The documents. */

.doc {
  max-width: var(--measure);
  overflow-wrap: break-word;
}

.doc h1,
.doc h2,
.doc h3,
.doc h4 {
  scroll-margin-top: var(--spacing-md);
}

.doc h1 {
  margin: 0 0 var(--spacing-lg);
  font-size: var(--text-headline-large-size);
  font-weight: var(--text-headline-large-weight);
  line-height: var(--text-headline-large-line-height);
}

.doc h2 {
  margin: var(--spacing-xl) 0 var(--spacing-md);
  font-size: var(--text-headline-medium-size);
  font-weight: var(--text-headline-medium-weight);
  line-height: var(--text-headline-medium-line-height);
}

.doc h3,
.doc h4 {
  margin: var(--spacing-lg) 0 var(--spacing-sm);
  font-size: var(--text-headline-small-size);
  font-weight: var(--text-headline-small-weight);
  line-height: var(--text-headline-small-line-height);
}

.doc p,
.doc ul,
.doc ol,
.doc dl,
.doc table,
.doc pre {
  margin: 0 0 var(--spacing-md);
}

.doc ul,
.doc ol {
  padding-left: var(--spacing-lg);
}

.doc li + li {
  margin-top: var(--spacing-xs);
}

.doc hr {
  margin: var(--spacing-xl) 0;
  border: 0;
  border-top: var(--line-weight-subtle) solid var(--color-outline-variant);
}

/* The heading permalinks the toc extension adds. */
.doc .headerlink {
  margin-left: var(--spacing-sm);
  color: var(--color-on-surface-muted);
  text-decoration: none;
  opacity: 0;
}

.doc :is(h1, h2, h3, h4):hover .headerlink,
.doc .headerlink:focus-visible {
  opacity: 1;
}

/* Tables scroll inside themselves rather than widening the page. */
.doc table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: var(--text-body-medium-size);
  line-height: var(--text-body-medium-line-height);
}

.doc th,
.doc td {
  padding: var(--spacing-sm) var(--spacing-md);
  border: var(--line-weight-subtle) solid var(--color-outline-variant);
  text-align: left;
  vertical-align: top;
}

.doc th {
  background: var(--color-surface-container-low);
  font-weight: var(--text-label-large-weight);
}

.doc pre {
  padding: var(--spacing-md);
  overflow-x: auto;
  background: var(--color-surface-container-low);
  border-radius: var(--radius-md);
  font-size: var(--text-body-small-size);
  line-height: var(--text-body-small-line-height);
}

/* No monospace face in the design tokens yet: the system's. */
.doc code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* Footer. */

.site-footer {
  border-top: var(--line-weight-subtle) solid var(--color-outline-variant);
  background: var(--color-surface-container-low);
  color: var(--color-on-surface-variant);
  font-size: var(--text-body-medium-size);
  line-height: var(--text-body-medium-line-height);
  padding: var(--spacing-lg) 0;
}

.site-footer p {
  margin: 0;
}