:root {
  --a11y-focus-outline: 2px solid #f6c344;
  --a11y-focus-offset: 3px;
  --a11y-link: #0a2a66;
  --a11y-link-hover: #06305a;
}

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

.skip-link {
  position: fixed;
  left: 0.75rem;
  top: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: Canvas;
  color: CanvasText;
  border: 2px solid CanvasText;
  border-radius: 0.25rem;
  z-index: 1100;
  transform: translateY(-200%);
  transition: transform 120ms ease-in-out;
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: var(--a11y-focus-outline);
  outline-offset: var(--a11y-focus-offset);
}

.decorative-separator {
  border-top: 1px solid rgba(0, 0, 0, 0.2);
  margin: 1.5rem 0;
}

html[data-bs-theme='dark'] .decorative-separator {
  border-top-color: rgba(255, 255, 255, 0.25);
}

a:focus-visible,
button:focus-visible,
[role='button']:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.dropdown-item:focus-visible,
.navbar-toggler:focus-visible {
  outline: var(--a11y-focus-outline);
  outline-offset: var(--a11y-focus-offset);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.2);
}

.navbar-dark .nav-link:focus-visible,
.navbar-dark .dropdown-item:focus-visible {
  background-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  text-decoration: underline;
}

.dropdown-menu .dropdown-item:focus-visible {
  background-color: #033c73;
  color: #ffffff;
}

/* Increase contrast for sidebar/table-of-contents links */
.col-md-3 .nav-link,
.col-md-3 .dropdown-item,
.col-md-3 .nav > li > a {
  color: var(--a11y-link);
  font-weight: 600;
}

.col-md-3 .nav-link:focus,
.col-md-3 .nav-link:hover,
.col-md-3 .dropdown-item:focus,
.col-md-3 .dropdown-item:hover {
  color: var(--a11y-link-hover);
}

/* Increase contrast for in-content links */
main a {
  color: var(--a11y-link);
  font-weight: 600;
}

main a:hover,
main a:focus,
main a:active {
  color: var(--a11y-link-hover);
}

footer a {
  color: var(--a11y-link);
  font-weight: 600;
}

footer a:hover,
footer a:focus,
footer a:active {
  color: var(--a11y-link-hover);
}