// // Base styles //

.input-group {

position: relative;
width: 100%;

@if $enable-flex {
  display: flex;
} @else {
  display: table;
  // Prevent input groups from inheriting border styles from table cells when
  // placed within a table.
  border-collapse: separate;
}

.form-control {
  // Ensure that the input is always above the *appended* addon button for
  // proper border colors.
  position: relative;
  z-index: 2;
  // Bring the "active" form control to the front
  @include hover-focus-active {
    z-index: 3;
  }
  @if $enable-flex {
    flex: 1;
  } @else {
    // IE9 fubars the placeholder attribute in text inputs and the arrows on
    // select elements in input groups. To fix it, we float the input. Details:
    // https://github.com/twbs/bootstrap/issues/11561#issuecomment-28936855
    float: left;
    width: 100%;
  }
  margin-bottom: 0;
}

}

.input-group-addon, .input-group-btn, .input-group .form-control {

@if not $enable-flex {
  display: table-cell;
}

&:not(:first-child):not(:last-child) {
  @include border-radius(0);
}

}

.input-group-addon, .input-group-btn {

@if not $enable-flex {
  width: 1%;
}
white-space: nowrap;
vertical-align: middle; // Match the inputs

}

// Sizing options // // Remix the default form control sizing classes into new ones for easier // manipulation.

.input-group-lg > .form-control, .input-group-lg > .input-group-addon, .input-group-lg > .input-group-btn > .btn {

@extend .form-control-lg;

} .input-group-sm > .form-control, .input-group-sm > .input-group-addon, .input-group-sm > .input-group-btn > .btn {

@extend .form-control-sm;

}

// // Text input groups //

.input-group-addon {

padding: $input-padding-y $input-padding-x;
margin-bottom: 0; // Allow use of <label> elements by overriding our default margin-bottom
font-size: $font-size-base;
font-weight: normal;
line-height: $input-line-height;
color: $input-color;
text-align: center;
background-color: $input-group-addon-bg;
border: $input-btn-border-width solid $input-group-addon-border-color;
@include border-radius($input-border-radius);

// Sizing
&.form-control-sm {
  padding: $input-padding-y-sm $input-padding-x-sm;
  font-size: $font-size-sm;
  @include border-radius($input-border-radius-sm);
}
&.form-control-lg {
  padding: $input-padding-y-lg $input-padding-x-lg;
  font-size: $font-size-lg;
  @include border-radius($input-border-radius-lg);
}

// scss-lint:disable QualifyingElement
// Nuke default margins from checkboxes and radios to vertically center within.
input[type="radio"],
input[type="checkbox"] {
  margin-top: 0;
}
// scss-lint:enable QualifyingElement

}

// // Reset rounded corners //

.input-group .form-control:not(:last-child), .input-group-addon:not(:last-child), .input-group-btn:not(:last-child) > .btn, .input-group-btn:not(:last-child) > .btn-group > .btn, .input-group-btn:not(:last-child) > .dropdown-toggle, .input-group-btn:not(:first-child) > .btn:not(:last-child):not(.dropdown-toggle), .input-group-btn:not(:first-child) > .btn-group:not(:last-child) > .btn {

@include border-right-radius(0);

} .input-group-addon:not(:last-child) {

border-right: 0;

} .input-group .form-control:not(:first-child), .input-group-addon:not(:first-child), .input-group-btn:not(:first-child) > .btn, .input-group-btn:not(:first-child) > .btn-group > .btn, .input-group-btn:not(:first-child) > .dropdown-toggle, .input-group-btn:not(:last-child) > .btn:not(:first-child), .input-group-btn:not(:last-child) > .btn-group:not(:first-child) > .btn {

@include border-left-radius(0);

} .form-control + .input-group-addon:not(:first-child) {

border-left: 0;

}

// // Button input groups //

.input-group-btn {

position: relative;
// Jankily prevent input button groups from wrapping with `white-space` and
// `font-size` in combination with `inline-block` on buttons.
font-size: 0;
white-space: nowrap;

// Negative margin for spacing, position for bringing hovered/focused/actived
// element above the siblings.
> .btn {
  position: relative;
  + .btn {
    margin-left: (-$input-btn-border-width);
  }
  // Bring the "active" button to the front
  @include hover-focus-active {
    z-index: 3;
  }
}

// Negative margin to only have a single, shared border between the two
&:not(:last-child) {
  > .btn,
  > .btn-group {
    margin-right: (-$input-btn-border-width);
  }
}
&:not(:first-child) {
  > .btn,
  > .btn-group {
    z-index: 2;
    margin-left: (-$input-btn-border-width);
    // Because specificity
    @include hover-focus-active {
      z-index: 3;
    }
  }
}

}