/// ========================================================================
/// Bootstrap: input-group.less
/// https://github.com/twbs/bootstrap/blob/master/less/input-group.less
/// 
/// ZUI: The file has been changed in ZUI. It will not keep update with the
/// Bootsrap version in the future.
/// http://zui.sexy
/// ========================================================================
/// Bootrap: Copyright 2011-2016 Twitter, Inc. Licensed under MIT
/// ========================================================================


// 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;
  }
}


// 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: @border-radius-base;

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

  &.fix-border {
    border-left: 0;
    border-right: 0;
  }

  &:empty,
  &.fix-padding {
    padding: 0;
    width: 1px;
  }
}

.input-group-btn.fix-border > .btn {
  border-left: 0;
  border-right: 0;
  border-radius: 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 .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:first-child { border-right: 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 {
      margin-left: -1px;
    }
  }
}