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

  > .button {
    position: relative;
    float: left;

    // Bring the "active" button to the front
    &:focus,
    &:active,
    &.active {
      z-index: 2;
    }
    @include hover {
      z-index: 2;
    }
  }
}

// Color variants for buttons
@mixin active-variant($color, $text-color: #fff) {
  $highlight: tint($color, 20%);
  $press:     shade($color, 20%);
  &:hover {
    background: $highlight;
    border-color: $highlight;
    color: $text-color;
  }
  &:active {
    background: $press;
    border-color: $press;
    color: $text-color;
  }
  &.active {
    background: $color;
    border-color: $color;
    color: $text-color;
    &:hover {
      background: $highlight;
      border-color: $highlight;
    }
    &:active {
      background: $press;
      border-color: $press;
    }
  }
}

.button-group,
.button-group-vertical {
  > .button {
    box-shadow: none;
    &.active {
      &:hover {
        background: $button-highlight-color;
        border-color: $button-highlight-color;
      }
      &:active {
        background: $button-press-color;
        border-color: $button-press-color;
      }
    }
    &.active-color-green {
      @include active-variant($green);
    }
    &.active-color-orange {
      @include active-variant($orange);
    }
    &.active-color-pink {
      @include active-variant($pink);
    }
    &.active-color-purple {
      @include active-variant($purple);
    }
    &.active-color-cyan {
      @include active-variant($cyan);
    }
    &.active-color-blue {
      @include active-variant($blue);
    }
    &.active-color-muted {
      @include active-variant($button-secondary-border, $body-color);
    }
  }
}


// Prevent double borders when buttons are next to each other
.button-group {
  .button + .button,
  .button + .button-group,
  .button-group + .button,
  .button-group + .button-group {
    margin-left: -$input-button-border-width;
  }
}

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

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

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

.button-group > .button:not(:first-child):not(:last-child):not(.dropdown-toggle) {
  border-radius: 0;
}

// Set corners individual because sometimes a single button can be in a .button-group and we need :first-child and :last-child to both match
.button-group > .button:first-child {
  margin-left: 0;

  &:not(:last-child):not(.dropdown-toggle) {
    @include border-right-radius(0);
  }
}
// Need .dropdown-toggle since :last-child doesn't apply given a .dropdown-menu immediately after it
.button-group > .button:last-child:not(:first-child),
.button-group > .dropdown-toggle:not(:first-child) {
  @include border-left-radius(0);
}

// Custom edits for including button-groups within button-groups (useful for including dropdown buttons within a button-group)
.button-group > .button-group {
  float: left;
}
.button-group > .button-group:not(:first-child):not(:last-child) > .button {
  border-radius: 0;
}
.button-group > .button-group:first-child:not(:last-child) {
  > .button:last-child,
  > .dropdown-toggle {
    @include border-right-radius(0);
  }
}
.button-group > .button-group:last-child:not(:first-child) > .button:first-child {
  @include border-left-radius(0);
}

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


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

.button-group-xsmall > .button { @extend .button-xsmall; }
.button-group-small > .button { @extend .button-small; }
.button-group-large > .button { @extend .button-large; }


//
// Split button dropdowns
//

// Give the line between buttons some depth
.button-group > .button + .dropdown-toggle {
  padding-right: 8px;
  padding-left: 8px;
}
.button-group > .button-lg + .dropdown-toggle {
  padding-right: 12px;
  padding-left: 12px;
}

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

  // Show no shadow for `.button-link` since it has no other button styles.
  &.button-link {
    @include box-shadow(none);
  }
}


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



//
// Vertical button groups
//

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

  // Clear floats so dropdown menus can be properly placed
  > .button-group {
    @include clearfix();

    > .button {
      float: none;
    }
  }

  > .button + .button,
  > .button + .button-group,
  > .button-group + .button,
  > .button-group + .button-group {
    margin-top: -$input-button-border-width;
    margin-left: 0;
  }
}

.button-group-vertical > .button {
  &:not(:first-child):not(:last-child) {
    border-radius: 0;
  }
  &:first-child:not(:last-child) {
    border-top-right-radius: $button-border-radius;
    @include border-bottom-radius(0);
  }
  &:last-child:not(:first-child) {
    border-bottom-left-radius: $button-border-radius;
    @include border-top-radius(0);
  }
}
.button-group-vertical > .button-group:not(:first-child):not(:last-child) > .button {
  border-radius: 0;
}
.button-group-vertical > .button-group:first-child:not(:last-child) {
  > .button:last-child,
  > .dropdown-toggle {
    @include border-bottom-radius(0);
  }
}
.button-group-vertical > .button-group:last-child:not(:first-child) > .button:first-child {
  @include border-top-radius(0);
}


// 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 `clip`. We cannot use
// `display: none;` or `visibility: hidden;` as that also hides the popover.
// Simply visually hiding the inputs via `opacity` would leave them clickable in
// certain cases which is prevented by using `clip` and `pointer-events`.
// This way, we ensure a DOM element is visible to position the popover from.
//
// See https://github.com/twbs/bootstrap/pull/12794 and
// https://github.com/twbs/bootstrap/pull/14559 for more information.

[data-toggle="buttons"] {
  > .button,
  > .button-group > .button {
    input[type="radio"],
    input[type="checkbox"] {
      position: absolute;
      clip: rect(0,0,0,0);
      pointer-events: none;
    }
  }
}