/**
 * Hidden fallback
 */
[hidden] {
  display: none;
  visibility: hidden;
}

/**
 * Styling top level items
 */
.nav a,
.nav label {
  display: block;
  padding: .64rem .85rem;
  color: #676767;
  background-color: #fff;
  box-shadow: inset 0 -1px #ececec;/*#1d1d1d*/
  -webkit-transition: all .25s ease-in;
  transition: all .25s ease-in;
  font:100 16px 'Lato', sans-serif;
}
.nav a:focus, .nav a:hover,
.nav label:focus,
.nav label:hover {
  color: #676767;
  background: #f9f9f9;
}

.nav label {
  cursor: pointer;
}

/**
 * Styling first level lists items
 */
.group-list a,
.group-list label {
  padding-left: 2rem;
  background: #fff;
  box-shadow: inset 0 -1px #ececec;
}
.group-list a:focus, .group-list a:hover,
.group-list label:focus,
.group-list label:hover {
  background: #f9f9f9;
}

/**
 * Styling second level list items
 */
.sub-group-list a,
.sub-group-list label {
  padding-left: 4rem;
  background: #fff;
  box-shadow: inset 0 -1px #ececec;
}
.sub-group-list a:focus, .sub-group-list a:hover,
.sub-group-list label:focus,
.sub-group-list label:hover {
  background: #f9f9f9;
}

/**
 * Styling third level list items
 */
.sub-sub-group-list a,
.sub-sub-group-list label {
  padding-left: 6rem;
  background: #fff;
  box-shadow: inset 0 -1px #ececec;
}
.sub-sub-group-list a:focus, .sub-sub-group-list a:hover,
.sub-sub-group-list label:focus,
.sub-sub-group-list label:hover {
  background: #f9f9f9;
}

/**
 * Hide nested lists
 */
.group-list,
.sub-group-list,
.sub-sub-group-list {
  height: 100%;
  max-height: 0;
  overflow: hidden;
  -webkit-transition: max-height .5s ease-in-out;
  transition: max-height .5s ease-in-out;
}

.nav__list input[type=checkbox]:checked + label + ul {
  /* reset the height when checkbox is checked */
  max-height: 1000px;
}

/**
 * Rotating chevron icon
 */
label > span {
  float: right;
  -webkit-transition: -webkit-transform .65s ease;
  transition: -webkit-transform .65s ease;
  transition: transform .65s ease;
  transition: transform .65s ease, -webkit-transform .65s ease;
}

.nav__list input[type=checkbox]:checked + label > span {
  -webkit-transform: rotate(90deg);
          transform: rotate(90deg);
}