Vulcan/client/components/menu/menu.scss

@function black($opacity){
  @return rgba(0,0,0,$opacity);
}
@function white($opacity){
  @return rgba(255,255,255,$opacity);
}

$medium-text: #a4a9ab;
$red: #DD3416;
$text: #444444;

// ------------------------------------ Base ------------------------------------ //
.menu-item{
  padding: 5px;
  margin: 0;
  a{
    font-size:14px;
  }
}
.menu-label{
  display: block;
}
.menu-description{
  display: block;
  font-weight: normal;
  font-size: 12px;
  margin-top: 2px;
  color: $medium-text;
}
.item-admin{
  .menu-label:after{
    content: "[A]";
    font-size: 10px;
    color: $red;
    display: inline-block;
    margin-left: 3px;
  }
}
.item-active{
  .dark-bg &, .medium-dark-bg &{
    background: white(0.1);
  }
  .light-bg &, .medium-light-bg &, white-bg &{
    background: black(0.1);
  }
}
.item-active.item-never-active{
  background: none;
}
.menu-top-label{
  cursor: pointer;
}
// ------------------------------------ List ------------------------------------ //

.menu-list{
  .show-more{
    display: none;
  }
  .item-active{
    background: black(0.05);
  }
}
// ------------------------------------ Hover ------------------------------------ //

.menu-dropdown{
  position:relative;
  &.menu-has-items{
    .menu-top-level{
      cursor: pointer;
      &:after{
        display:inline-block;
        position:relative;
        top:-1px;
        margin-left:4px;
        content:"▼";
        font-size:8px;
      }
    }
    &:hover{
      .menu-menu{
        display:block;
      }
    }
  }
  .menu-menu{
    display:none;
    top:10px;
    left:10px;
    position:absolute;
    padding-top:20px;
    z-index: 10000;
    &, a, a:link, a:visited{
      color: $text;
    }
    a.button{
      color: white;
    }
    .menu-contents{
      background:white;
      padding: 10px;
      min-width:180px;
      border-radius: 3px;
      box-shadow: 0 1px 3px black(0.35);
      list-style-type: none;
    }
  }
  .show-more{
    display: none;
  }
}

// ------------------------------------ Accordion ------------------------------------ //

.menu-accordion{
  .menu-top-level{
    cursor: default;
    display: block;
    padding: 5px;
    position: relative;
    /* note: we use a pseudo-element for the border so we can control the opacity indepdently from the color */
    &:after{
      content: " ";
      display: block;
      position: absolute;
      width: 100%;
      height: 1px;
      background: currentColor;
      bottom: 0px;
      left: 0px;
      opacity: 0.5;
    }
  }
  /* ------- Show More Button ------- */
  .show-more{
    // border-top: 1px solid #ccc;
    position: relative;
    /* note: we use a pseudo-element for the border so we can control the opacity indepdently from the color */
    &:before{
      content: " ";
      display: block;
      position: absolute;
      width: 100%;
      height: 1px;
      background: currentColor;
      top: 0px;
      left: 0px;
      opacity: 0.5;
    }
    padding: 8px 0;
    display: none;
    text-align: center;
    .icon{
      display: block;
      height: 20px;
      width: 20px;
      opacity: 0.5;
      margin: 0 auto;
    }
    &:hover{
      background: white(0.2);
      .show-more-icon{
        opacity: 1;
      }
    }
    .icon-close{
      display: none;
    }
  }
  &.menu-long .show-more{
    display: block; // only show the "show more" button if the menu has more than three items
  }
  &.menu-open{
    .icon-close{
      display: block;
    }
    .icon-open{
      display: none;
    }    
  }

  /* expand/collapse animation */
  .menu-contents{
    max-height: 93px;
    overflow: hidden;
    transition: max-height ease-out 300ms;
  }
  &.menu-open .menu-contents{
    max-height: 999px !important;
  }
}