/* ==========================================================================
   Global / site-wide defaults
   ========================================================================== */

/* Main body: sets the base font stack + page background used everywhere. */
body {
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  background-color: #f4f4f3;
}

/* ==========================================================================
   Top navigation bar (Bootstrap / pkgdown navbar)
   ========================================================================== */

/* Navbar background color (the `!important` ensures it wins over Bootstrap). */
.navbar {
  background-color: #1d5560 !important;
}

/* Navbar text/icon colors: force all common navbar elements to the same light
   foreground so contrast stays consistent. */
.navbar .navbar-brand,
.navbar .navbar-nav .nav-link,
.navbar .navbar-text,
.navbar a,
.navbar .fa,
.navbar .fab,
.navbar .fas,
.navbar .text-muted,
.navbar .pkgdown-version {
  color: #f4f4f3 !important;
}

/* Slightly bolder typography for the brand + primary nav links. */
.navbar .navbar-brand,
.navbar .navbar-nav .nav-link,
.navbar .navbar-text {
  font-weight: 500;
}

/* GitHub icon: make it readable + give it some spacing from prior items. */
.navbar .fab.fa-github {
  font-size: 1.55rem;
  margin-left: 0.5rem;
}

/* ==========================================================================
   Page header + logo layout (home/articles/reference pages)
   ========================================================================== */

/* Convert pkgdown's header area into a 2-column grid: title on the left, logo
   on the right. Also removes pkgdown's default underline so we can replace it
   with a custom divider line that "meets" the logo. */
.template-reference-index .page-header,
.template-reference-topic .page-header,
.template-reference .page-header,
.template-article .page-header,
.template-home .page-header {
  /* Small tuning knobs used below. Adjust here if you want to re-balance
     spacing without hunting through multiple rules. */
  --page-header-gap: 1.25rem;
  --page-header-line-overshoot: 1.3rem;
  --page-header-logo-nudge: 0.6rem;
  --page-header-logo-drop: 0.2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto 1px;
  column-gap: var(--page-header-gap);
  row-gap: 0.75rem;
  align-items: start;
  padding: 1.25rem 0 0.75rem 0;
  margin-bottom: 1.25rem;
  border-bottom: 0 !important; /* remove pkgdown's default underline */
}

/* Divider line: drawn via a pseudo-element so it can extend into the column gap
   and visually connect with the logo. */
.template-reference-index .page-header::after,
.template-reference-topic .page-header::after,
.template-reference .page-header::after,
.template-article .page-header::after,
.template-home .page-header::after {
  content: "";
  grid-column: 1 / 2;
  grid-row: 2;
  align-self: stretch;
  height: 1px;
  background: rgba(29, 85, 96, 0.35);
  /* Extend the line into the column gap so it visually reaches the logo. */
  width: calc(100% + var(--page-header-gap) + var(--page-header-line-overshoot));
  margin-right: calc(-1 * (var(--page-header-gap) + var(--page-header-line-overshoot)));
}

/* Page title (H1): keep it in the left column and use the brand color. */
.template-reference-index .page-header h1,
.template-reference-topic .page-header h1,
.template-reference .page-header h1,
.template-article .page-header h1,
.template-home .page-header h1 {
  margin-bottom: 0;
  grid-column: 1 / 2;
  grid-row: 1;
  color: #1d5560;
}

/* Reference index only: rename the default "Package index" heading to
   "Functions" without changing the underlying HTML.

   Technique: hide the original text by making the H1 transparent, then overlay
   a replacement label via ::after. */
.template-reference-index .page-header h1 {
  position: relative;
  color: transparent;
}

.template-reference-index .page-header h1::after {
  content: "Functions";
  position: absolute;
  left: 0;
  top: 0;
  color: #1d5560;
}

/* Header logo: placed in the right column, spanning both rows so it can align
   with the title and the divider line. */
.template-reference-index .page-header img.logo,
.template-reference-topic .page-header img.logo,
.template-reference .page-header img.logo,
.template-article .page-header img.logo,
.template-home .page-header img.logo {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  align-self: end;
  justify-self: end;
  /* Nudge logo left so the divider line meets its lower-left corner. */
  margin-left: calc(-1 * var(--page-header-logo-nudge));
  transform: translateY(var(--page-header-logo-drop));
  max-height: 144px;
  height: auto;
  width: auto;
}

/* ==========================================================================
   Sidebar styles
   ========================================================================== */

/* Home page sidebar heading style: small uppercase section titles. */
.template-home aside h2 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #495057;
  margin-bottom: 0.5rem;
}

/* Spacing between sidebar lists on the home page. */
.template-home aside .list-unstyled {
  margin-bottom: 1.25rem;
}

/* Reference page TOC (`#toc`): remove Bootstrap "card" look and restyle to match
   the home sidebar (transparent, no border, tighter spacing). */
#toc {
  background: transparent !important;
  border: 0 !important;
  padding: 0 !important;
}

/* TOC heading: same treatment as home sidebar headings. */
#toc h2 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #495057;
  margin-bottom: 0.5rem;
}

/* TOC list container: remove default indentation and match spacing. */
#toc .nav {
  padding-left: 0;
  margin-bottom: 1.25rem;
}

/* TOC links: make them look like plain links (no pills/background). */
#toc .nav-link {
  padding: 0.25rem 0;
  margin: 0;
  color: #1d5560;
  background: transparent !important;
  border-radius: 0 !important;
}

/* Hover/active states: underline on hover, slightly bolder when active. */
#toc .nav-link:hover {
  text-decoration: underline;
}

#toc .nav-link.active {
  font-weight: 600;
  color: #1d5560;
  background: transparent !important;
}