/**
 * @file
 * Styling for Collapsing Book Navigation Block(s)
 */

.collapse {
  display: none;
}

.collapse.show {
  display: block;
}

.book-block-menu {
  margin-left: -6px;
}

.block-collapsing-book-navigation .menu {
  padding-left: 0.25rem;
  margin-bottom: 0.25rem;
}

.block-collapsing-book-navigation .menu-root {
  padding-bottom: 0;
}

.block-collapsing-book-navigation .menu-item {
  list-style-image: none;
  list-style-type: none;
}

.block-collapsing-book-navigation .menu-list {
  list-style: none;
}

.block-collapsing-book-navigation .toggle-icon ~ .menu-link {
  margin-left: 0;
}

.block-collapsing-book-navigation .menu-link {
  margin-left: -1rem;
}

.block-collapsing-book-navigation .menu-link.active {
  font-weight: 600;
}

.block-collapsing-book-navigation .toggle-icon {
  margin-left: calc(-1rem + 0.0625rem);
}

.block-collapsing-book-navigation .toggle-icon, .block-collapsing-book-navigation .toggle-icon:hover, .toggle-icon:active, .block-collapsing-book-navigation .toggle-icon:focus {
  text-decoration: none;
  border-bottom: none;
}

/* ▸ */
.block-collapsing-book-navigation .toggle-icon::before {
  content: '\25B8'; /* ▸ */
  display: inline-block;
  margin-right: 0.5em;
  font-size: 1.1em;
}

/* ▾ */
.block-collapsing-book-navigation .toggle-icon.menu-item--expanded::before {
  transform: rotate(90deg) translateY(-2px);
}

/* ○ */
.block-collapsing-book-navigation .menu-link:first-child::before {
  content: '\25CB';
  margin-left: calc(-1em + 2px);
  margin-right: calc(2em - 2px);
  float: left;
  color: initial;
}