//
// Dropdown menus
// --------------------------------------------------


// Dropdown arrow/caret
.caret {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 2px;
    vertical-align: middle;
    border-top:   @caret-width-base solid @dropdown-caret-color;
    border-right: @caret-width-base solid transparent;
    border-left:  @caret-width-base solid transparent;
    // Firefox fix for https://github.com/twbs/bootstrap/issues/9538. Once fixed,
    // we can just straight up remove this.
    border-bottom: 0 dotted;
  }
  
  // The dropdown wrapper (div)
  .dropdown {
    position: relative;
  }
  
  // Prevent the focus on the dropdown toggle when closing dropdowns
  .dropdown-toggle:focus {
    outline: 0;
  }
  
  // The dropdown menu (ul)
  .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: @zindex-dropdown;
    display: none; // none by default, but block on "open" of the menu
    float: left;
    min-width: 160px;
    padding: 5px 0;
    margin: 2px 0 0; // override default ul
    list-style: none;
    font-size: @font-size-base;
    background-color: @dropdown-bg;
    border: 1px solid @dropdown-fallback-border; // IE8 fallback
    border: 1px solid @dropdown-border;
    border-radius: @border-radius-base;
    .box-shadow(0 6px 12px rgba(0,0,0,.175));
    background-clip: padding-box;
  
    // Aligns the dropdown menu to right
    &.pull-right {
      right: 0;
      left: auto;
    }
  
    // Dividers (basically an hr) within the dropdown
    .divider {
      .nav-divider(@dropdown-divider-bg);
    }
  
    // Links within the dropdown menu
    > li > a {
      display: block;
      padding: 3px 20px;
      clear: both;
      font-weight: normal;
      line-height: @line-height-base;
      color: @dropdown-link-color;
      white-space: nowrap; // prevent links from randomly breaking onto new lines
    }
  }
  
  // Hover/Focus state
  .dropdown-menu > li > a {
    &:hover,
    &:focus {
      text-decoration: none;
      color: @dropdown-link-hover-color;
      background-color: @dropdown-link-hover-bg;
    }
  }
  
  // Active state
  .dropdown-menu > .active > a {
    &,
    &:hover,
    &:focus {
      color: @dropdown-link-active-color;
      text-decoration: none;
      outline: 0;
      background-color: @dropdown-link-active-bg;
    }
  }
  
  // Disabled state
  //
  // Gray out text and ensure the hover/focus state remains gray
  
  .dropdown-menu > .disabled > a {
    &,
    &:hover,
    &:focus {
      color: @dropdown-link-disabled-color;
    }
  }
  // Nuke hover/focus effects
  .dropdown-menu > .disabled > a {
    &:hover,
    &:focus {
      text-decoration: none;
      background-color: transparent;
      background-image: none; // Remove CSS gradient
      .reset-filter();
      cursor: not-allowed;
    }
  }
  
  // Open state for the dropdown
  .open {
    // Show the menu
    > .dropdown-menu {
      display: block;
    }
  
    // Remove the outline when :focus is triggered
    > a {
      outline: 0;
    }
  }
  
  // Dropdown section headers
  .dropdown-header {
    display: block;
    padding: 3px 20px;
    font-size: @font-size-small;
    line-height: @line-height-base;
    color: @dropdown-header-color;
  }
  
  // Backdrop to catch body clicks on mobile, etc.
  .dropdown-backdrop {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    z-index: @zindex-dropdown - 10;
  }
  
  // Right aligned dropdowns
  .pull-right > .dropdown-menu {
    right: 0;
    left: auto;
  }
  
  // Allow for dropdowns to go bottom up (aka, dropup-menu)
  //
  // Just add .dropup after the standard .dropdown class and you're set, bro.
  // TODO: abstract this so that the navbar fixed styles are not placed here?
  
  .dropup,
  .navbar-fixed-bottom .dropdown {
    // Reverse the caret
    .caret {
      // Firefox fix for https://github.com/twbs/bootstrap/issues/9538. Once this
      // gets fixed, restore `border-top: 0;`.
      border-top: 0 dotted;
      border-bottom: 4px solid @dropdown-caret-color;
      content: "";
    }
    // Different positioning for bottom up menu
    .dropdown-menu {
      top: auto;
      bottom: 100%;
      margin-bottom: 1px;
    }
  }
  
  
  // Component alignment
  //
  // Reiterate per navbar.less and the modified component alignment there.
  
  @media (min-width: @grid-float-breakpoint) {
    .navbar-right {
      .dropdown-menu {
        .pull-right > .dropdown-menu();
      }
    }
  }