//
// Button groups
// --------------------------------------------------

// Make the div behave like a button
.btn-group,
.btn-group-vertical {
  position: relative;
  display: inline-block;
  vertical-align: middle; // match .btn alignment given font-size hack above


  > .btn {
    position: relative;
    float: left;
    // Bring the "active" button to the front
    &:hover,
    &:focus,
    &:active,
    &.active {
      z-index: 2;
    }

    &:focus {
      // Remove focus outline when dropdown JS adds it after closing the menu
      outline: 0;
    }

    + .btn {
      border-left-width: 1px;
    }

    &:active,
    &.active {
      background-clip: initial;
      border-top-width: 0;
      top: $btn-edge-width;
    }
  }
}

// Optional: Group multiple button groups together for a toolbar
.btn-toolbar {
  @include clearfix();
  margin-left: -5px; // Offset the first child's margin


  .btn-group,
  .input-group {
    float: left;
  }

  > .btn,
  > .btn-group,
  > .input-group {
    margin-left: 5px;
  }
}


// Custom edits for including btn-groups within btn-groups (useful for including
// dropdown buttons within a btn-group)
.btn-group > .btn-group {
  float: left;
}

// On active and open, don't show outline
.btn-group .dropdown-toggle:active,
.btn-group.open .dropdown-toggle {
  outline: 0;
}


// Sizing
//
// Remix the default button sizing classes into new ones for easier manipulation.

.btn-group-lg > .btn { @extend %btn-lg; }
.btn-group-sm > .btn { @extend %btn-sm; }
.btn-group-xs > .btn { @extend %btn-xs; }

.btn-group-lg > .btn {
  &:active,
  &.active {
    // scss-lint:disable ImportantRule
    top: $btn-edge-width !important;
    margin-bottom: $btn-edge-width;
  }
}

// Split button dropdowns
// ----------------------

// Give the line between buttons some depth
.btn-group > .btn + .dropdown-toggle {
  padding-left: 8px;
  padding-right: 8px;
}

.btn-group > .btn-lg + .dropdown-toggle {
  padding-left: 12px;
  padding-right: 12px;
}

// The clickable button for toggling the menu
// Remove the gradient and set the same inset shadow as the :active state
.btn-group.open .dropdown-toggle {
  box-shadow: inset 0 3px 5px rgba(0,0,0,.125);

  // Show no shadow for `.btn-link` since it has no other button styles.
  &.btn-link {
    box-shadow: none;
  }
}


// Reposition the caret
.btn .caret {
  margin-left: 0;
}
// Carets in other button sizes
.btn-lg .caret {
  border-width: $caret-width-large $caret-width-large 0;
  border-bottom-width: 0;
}
// Upside down carets for .dropup
.dropup .btn-lg .caret {
  border-width: 0 $caret-width-large $caret-width-large;
}


// Vertical button groups
// ----------------------

// .btn-group-vertical {
//   > .btn,
//   > .btn-group,
//   > .btn-group > .btn {
//     display: block;
//     float: none;
//     width: 100%;
//     max-width: 100%;
//   }

//   // Clear floats so dropdown menus can be properly placed
//   > .btn-group {
//     @include clearfix();
//     > .btn {
//       float: none;
//     }
//   }

//   > .btn + .btn,
//   > .btn + .btn-group,
//   > .btn-group + .btn,
//   > .btn-group + .btn-group {
//     margin-top: -1px;
//     margin-left: 0;
//   }
// }

// .btn-group-vertical > .btn {
//   &:not(:first-child):not(:last-child) {
//     border-radius: 0;
//   }

//   &:first-child:not(:last-child) {
//     @include border-bottom-radius(0);
//     border-top-right-radius: $border-radius-base;
//   }

//   &:last-child:not(:first-child) {
//     @include border-top-radius(0);
//     border-bottom-left-radius: $border-radius-base;
//   }
// }

// .btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {
//   border-radius: 0;
// }

// .btn-group-vertical > .btn-group:first-child:not(:last-child) {
//   > .btn:last-child,
//   > .dropdown-toggle {
//     @include border-bottom-radius(0);
//   }
// }

// .btn-group-vertical > .btn-group:last-child:not(:first-child) > .btn:first-child {
//   @include border-top-radius(0);
// }



// Justified button groups
// ----------------------

.btn-group-justified {
  display: table;
  width: 100%;
  table-layout: fixed;
  border-collapse: separate;

  > .btn,
  > .btn-group {
    float: none;
    display: table-cell;
    width: 1%;
  }

  > .btn-group .btn {
    width: 100%;
  }

  > .btn-group .dropdown-menu {
    left: auto;
  }
}


// Checkbox and radio options
//
// In order to support the browser's form validation feedback, powered by the
// `required` attribute, we have to "hide" the inputs via `opacity`. We cannot
// use `display: none;` or `visibility: hidden;` as that also hides the popover.
// This way, we ensure a DOM element is visible to position the popover from.
//
// See https://github.com/twbs/bootstrap/pull/12794 for more.

[data-toggle="buttons"] > .btn > input[type="radio"],
[data-toggle="buttons"] > .btn > input[type="checkbox"] {
  position: absolute;
  z-index: -1;
  opacity: 0;
}
