/* layout: no top bar on desktop, the sidebar carries logo and search, no
   dividers anywhere, a narrow reading column */
:root,
:root[data-theme="light"] {
  --sl-content-width: 38rem;
  --sl-sidebar-width: 18.5rem;
  --sl-sidebar-pad-x: 3rem;
  /* one top inset shared by sidebar, content and table of contents */
  --docs-top: 4.5rem;
  --sl-color-hairline: transparent;
  --sl-color-hairline-light: transparent;
  --sl-color-hairline-shade: transparent;
}

@media (min-width: 50rem) {
  :root[data-has-sidebar] {
    --sl-nav-height: 0rem;
  }

  :root[data-has-sidebar] .header {
    display: none;
  }
}

/* the landing page keeps a header, but it scrolls away with the page */
:root:not([data-has-sidebar]) .header {
  position: absolute;
  background: transparent;
}

.docs-header,
.docs-header-end {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.docs-header {
  justify-content: space-between;
  height: 100%;
}

::selection {
  background-color: var(--color-background-info-subtle-hover);
  color: var(--color-foreground-default);
}

/* sidebar */
@media (min-width: 50rem) {
  .sidebar-content {
    padding-top: var(--docs-top);
    gap: 1.25rem;
  }

  :root[data-has-sidebar] main > .content-panel:first-of-type {
    padding-top: var(--docs-top);
  }

  .right-sidebar-panel {
    padding-top: var(--docs-top);
  }

  :root[data-has-sidebar] main > .content-panel:first-of-type h1 {
    margin-top: 0;
  }
}

.sidebar-top {
  align-items: center;
  justify-content: space-between;
}

.sidebar-top .site-title img {
  height: 1.75rem;
  width: auto;
}

/* search: a pill at the top of the sidebar that opens the search dialog */
.sidebar-search button[data-open-modal] {
  display: flex;
  width: 100%;
  height: 2rem;
  max-width: none;
  gap: 0.5rem;
  padding-inline: 0.75rem;
  border: 1px solid var(--color-border-default);
  border-radius: 9999px;
  background-color: var(--color-background-default);
  color: var(--color-foreground-subtle);
  font-size: 0.875rem;
}

.sidebar-search button[data-open-modal]:hover {
  border-color: var(--color-border-strong);
  color: var(--color-foreground-muted);
}

.sidebar-search button[data-open-modal] > span {
  display: block;
}

.sidebar-search button[data-open-modal] kbd {
  margin-inline-start: auto;
  background: transparent;
  color: var(--color-foreground-subtle);
}

site-search dialog {
  margin-top: 12vh;
  border: 1px solid var(--color-border-default);
  border-radius: 1rem;
  background-color: var(--color-background-default);
  box-shadow: 0 24px 48px -12px var(--color-shadow-ambient-strong);
}

site-search dialog::backdrop {
  background-color: color-mix(in srgb, var(--color-foreground-default) 18%, transparent);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

/* the nav: one size throughout, bold group headings, whitespace between groups */
.docs-nav {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.docs-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.docs-nav > * + * {
  margin-top: 1.75rem;
}

.docs-nav h2,
.docs-nav h3 {
  margin: 0 0 0.25rem;
  font-size: inherit;
  line-height: inherit;
  color: var(--color-foreground-default);
}

.docs-nav h2 {
  font-weight: var(--font-weight-semibold);
}

.docs-nav h3 {
  font-weight: var(--font-weight-medium);
}

.docs-nav .subgroup {
  margin-block: 0.75rem;
}

.docs-nav a {
  display: block;
  padding-block: 0.25rem;
  color: var(--color-foreground-muted);
  text-decoration: none;
}

.docs-nav a:hover {
  color: var(--color-foreground-default);
}

.docs-nav a[aria-current="page"] {
  color: var(--color-foreground-default);
  font-weight: var(--font-weight-medium);
}

/* content: markup.css does the typography. what's left is fitting it around
   the elements starlight adds */

/* starlight wraps each heading with its anchor link. the rule under a
   readme's h1 and h2 goes on the wrapper, so it spans the column */
.markup .sl-heading-wrapper {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.markup .sl-heading-wrapper > :is(h1, h2, h3, h4, h5, h6) {
  margin: 0;
  border: 0;
  padding: 0;
}

.markup .sl-heading-wrapper:is(.level-h1, .level-h2) {
  border-bottom: 1px solid var(--color-border-default);
  padding-bottom: var(--spacing-xs);
}

.markup > :first-child,
.markup > .sl-heading-wrapper:first-child {
  margin-top: 0;
}

/* the anchor link, shown as tangled.org's `#` on hover */
.markup .sl-anchor-link {
  margin-inline-start: var(--spacing-xs);
  color: var(--color-foreground-placeholder);
  text-decoration: none;
  opacity: 0;
  transition: opacity 150ms;
}

.markup .sl-heading-wrapper:hover .sl-anchor-link,
.markup .sl-anchor-link:focus-visible {
  opacity: 1;
}

.markup .sl-anchor-link svg {
  display: none;
}

.markup .sl-anchor-link::before {
  content: "#";
}

/* asides, styled like tangled.org's github alerts */
.markup .starlight-aside {
  margin-block: var(--spacing-sm);
  padding: 0 0 0 var(--spacing-md);
  border: 0;
  border-inline-start: 2px solid var(--color-border-default);
  background: transparent;
}

.markup .starlight-aside__title {
  gap: 0;
  font-size: inherit;
  font-weight: var(--font-weight-semibold);
}

.markup .starlight-aside__icon {
  display: none;
}

.markup .starlight-aside--note,
.markup .starlight-aside--tip {
  border-color: var(--color-background-info-emphasis);
}

.markup .starlight-aside--note .starlight-aside__title {
  color: var(--color-foreground-info);
}

.markup .starlight-aside--tip {
  border-color: var(--color-background-success-emphasis);
}

.markup .starlight-aside--tip .starlight-aside__title {
  color: var(--color-foreground-success);
}

.markup .starlight-aside--caution {
  border-color: var(--color-background-warning-emphasis);
}

.markup .starlight-aside--caution .starlight-aside__title {
  color: var(--color-foreground-warning);
}

.markup .starlight-aside--danger {
  border-color: var(--color-background-danger-emphasis);
}

.markup .starlight-aside--danger .starlight-aside__title {
  color: var(--color-foreground-danger);
}

/* next/previous links, as plain text */
.pagination-links a {
  border: 0;
  box-shadow: none;
  padding: var(--spacing-xs) 0;
  text-decoration: none;
}

.pagination-links a .link-title {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
}

/* expressive code sets its own size on pre; markup.css sizes code at 0.875em of
   pre, so pre takes the body size and code lands on tangled.org's 13px */
.markup .expressive-code pre {
  font-size: 0.9375rem;
}

/* starlight sizes the heading wrapper with its own scale, which the anchor link
   inherits; match each level to the heading markup.css gives it */
.markup .sl-heading-wrapper.level-h1 {
  font-size: 1.5rem;
}

.markup .sl-heading-wrapper.level-h2 {
  font-size: 1.25rem;
}

.markup .sl-heading-wrapper.level-h3 {
  font-size: 1rem;
}

.markup .sl-heading-wrapper:is(.level-h4, .level-h5, .level-h6) {
  font-size: 0.8125rem;
}

/* starlight lets inline code break anywhere; in a table that splits short
   identifiers mid-word, so keep them whole and let the table scroll instead */
.markup :is(td, th) code {
  overflow-wrap: normal;
  white-space: nowrap;
}