//
  // Input groups
  // --------------------------------------------------
  
  // Base styles
  // -------------------------
  .input-group {
    position: relative; // For dropdowns
    display: table;
    border-collapse: separate; // prevent input groups from inheriting border styles from table cells when placed within a table
  
    // Undo padding and float of grid classes
    &[class*="col-"] {
      float: none;
      padding-left: 0;
      padding-right: 0;
    }
  
    .form-control {

      // Ensure that the input is always above the *appended* addon button for
      // proper border colors.
      position: relative;
      z-index: 2;
  
      // 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;

  
      &:focus {
        z-index: 3;
      }

    }
  }
  
  // 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 {
    .input-lg();
  }

  .input-group-sm > .form-control,
  .input-group-sm > .input-group-addon,

  .input-group-sm > .input-group-btn > .btn {
    .input-sm();
  }

  
  
  // Display as table-cell
  // -------------------------
  .input-group-addon,
  .input-group-btn,
  .input-group .form-control {
    display: table-cell;
  
    &:not(:first-child):not(:last-child) {
      border-radius: 0;
    }
  }
  // Addon and addon wrapper for buttons
  .input-group-addon,
  .input-group-btn {
    width: 1%;
    white-space: nowrap;
    vertical-align: middle; // Match the inputs
  }
  
  // Text input groups
  // -------------------------
  .input-group-addon {
    padding: @padding-base-vertical @padding-base-horizontal;
    font-size: @font-size-base;
    font-weight: normal;
    line-height: 1;
    color: @input-color;
    text-align: center;
    background-color: @input-group-addon-bg;
    border: 1px solid @input-group-addon-border-color;

    border-radius: @input-border-radius;

  
    // Sizing
    &.input-sm {
      padding: @padding-small-vertical @padding-small-horizontal;
      font-size: @font-size-small;

      border-radius: @input-border-radius-small;

    }
    &.input-lg {
      padding: @padding-large-vertical @padding-large-horizontal;
      font-size: @font-size-large;

      border-radius: @input-border-radius-large;

    }
  
    // Nuke default margins from checkboxes and radios to vertically center within.
    input[type="radio"],
    input[type="checkbox"] {
      margin-top: 0;
    }
  }
  
  // Reset rounded corners
  .input-group .form-control:first-child,
  .input-group-addon:first-child,
  .input-group-btn:first-child > .btn,

  .input-group-btn:first-child > .btn-group > .btn,

  .input-group-btn:first-child > .dropdown-toggle,

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

    .border-right-radius(0);
  }
  .input-group-addon:first-child {
    border-right: 0;
  }
  .input-group .form-control:last-child,
  .input-group-addon:last-child,
  .input-group-btn:last-child > .btn,

  .input-group-btn:last-child > .btn-group > .btn,

  .input-group-btn:last-child > .dropdown-toggle,

  .input-group-btn:first-child > .btn:not(:first-child),
  .input-group-btn:first-child > .btn-group:not(:first-child) > .btn {

    .border-left-radius(0);
  }
  .input-group-addon:last-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: -1px;
      }
      // Bring the "active" button to the front
      &:hover,
      &:focus,
      &:active {
        z-index: 2;
      }

    }

  
    // Negative margin to only have a 1px border between the two
    &:first-child {
      > .btn,
      > .btn-group {
        margin-right: -1px;
      }

    }

    &:last-child {
      > .btn,
      > .btn-group {
        z-index: 2;
        margin-left: -1px;
      }

    }
  }