.has-collapsable-nav {
  background-color: mc('blue-grey', '50');
  display: flex;
  justify-content: flex-start;
  align-items: stretch;
}

.collapsable-nav {
  width: 300px;
  background-color: mc('blue-grey', '900');
  color: #FFF;
  min-height: 80vh;
  transition: all .6s ease;
  border-left: 1px solid darken(mc('blue-grey', '900'), 5%);

  &:last-child {
    border-bottom-right-radius: 5px;
  }

  &.has-children {
    width: 50px;
    background-color: mc($primary, '500');
    border-left: 1px solid mc($primary, '700');

    &:nth-child(2) {
      border-left: 1px solid darken(mc('blue-grey', '900'), 5%);
    }

    li {
      border-top: none;
      display: none;
    }

  }

  li {
    display: flex;
    border-top: 1px solid darken(mc('blue-grey', '900'), 5%);

    &.is-title {
      background-color: mc('blue-grey', '800');
      padding: 8px 15px;
      color: mc('blue-grey', '300');
      font-size: 13px;
      letter-spacing: 1px;
      text-transform: uppercase;
      box-shadow: 0 0 5px rgba(0,0,0,0.3);
      margin-right:1px;
    }

    &.is-active {
      display: flex;
      height: 50px;
      width: 300px;
      min-width: 80vh;
      @include prefix(transform, rotate(90deg) translate(0, -50px));
      transform-origin: 0 0;

      a {
        height: 50px;

        &:nth-child(2) {
          display: none;
        }

      }
    }

  }

  a {
    display: flex;
    flex: 1 1 auto;
    min-height: 40px;
    width: 100%;
    align-items: center;
    padding: 0 15px;
    color: #FFF;
    cursor: pointer;
    transition: all .4s ease;
    background-color: rgba(0,0,0,0);

    &.is-pagelink {
      flex: 0 1 70px;
      justify-content: center;
    }

    &:hover {
      background-color: rgba(0,0,0,.1);
      text-decoration: none;
    }

    i {
      font-size: 14px;

      &:first-of-type {
        margin-right: 10px;
      }

    }

    span {
      display: block;
      padding: 5px 0;
    }

  }

}

/* THEME OVERRIDE - START */

@each $color, $colorvalue in $material-colors {
  .is-primary-#{$color} .collapsable-nav {
    &.has-children {
      background-color: mc($color, '500');
      border-left-color: mc($color, '700');
    }
  }
}

/* THEME OVERRIDE - END */