html.is-clipped--nav {
  overflow-y: hidden;
}

.navigation-menu {
  flex-grow: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  /* help Chrome calculate the height correctly; must match .navigation value minus height of drawer */
  height: calc(100vh - var(--navbar-height) - var(--toolbar-height) - var(--drawer-height));
}

@media screen and (min-width: 1024px) {
  .navigation-menu {
    height: calc(100vh - var(--navbar-height) - var(--drawer-height));
  }
}

.navigation-menu:not(.is-active) {
  display: none;
}

.navigation-menu::-webkit-scrollbar {
  width: 0.25rem;
}

.navigation-menu::-webkit-scrollbar-thumb {
  background-color: #c1c1c1;
}

.nav-menu {
  flex-grow: 1;
  min-height: 0;
  width: 100%;
  padding: 0.5rem 0.75rem;
  line-height: 1.35;
  position: relative;
}

.nav-menu h3.title {
  margin: 0;
  font-weight: 500;
  color: #424242;
  font-size: 1em;
  padding: 0.25em 0 0.125em;
}

.nav-menu a,
.nav-menu a:visited {
  color: inherit;
}

.nav-list {
  margin: 0 0 0 0.8em;
  padding: 0;
}

.nav-menu > .nav-list {
  margin-bottom: 0.5rem;
}

.nav-item {
  list-style: none;
  margin-top: 0.5em;
}

/* adds some breathing room below a nested list */
.nav-toggle ~ .nav-list {
  padding-bottom: 0.125rem;
}

/* matches list without a title */
.nav-item[data-depth="0"] > .nav-list:first-child {
  display: block;
  margin: 0;
}

.nav-item:not(.is-active) > .nav-list {
  display: none;
}

.nav-toggle {
  background: transparent url(../img/caret.svg) no-repeat center;
  background-size: 55%;
  border: none;
  cursor: pointer;
  outline: none;
  position: absolute;
  height: 1.4em; /* NOTE must match line-height of text; slightly tweaked for alignment */
  width: 1.5em;
  margin-left: -1.5em;
}

.nav-toggle::-moz-focus-inner {
  border: none;
}

.nav-item.is-active > .nav-toggle {
  transform: rotate(90deg);
}

.is-current-page > .nav-link,
.is-current-page > .nav-text {
  font-weight: 500;
}