$outline-color: rgba(0, 0, 0, 0.2);
$box-shadow-outline: 0 0 0 1px $outline-color;
$bar-size-short: 16px !default;
$base-margin: 6px !default;
$columns: 6 !default; // this affects the number of swatches per row and the width of the color picker, saturation, etc.
$bar-size-large: ($bar-size-short * $columns) + ($base-margin * ($columns - 1));

@mixin bgCheckerBox($size: 10px) {
  background: linear-gradient(45deg, rgba(0, 0, 0, 0.1) 25%, rgba(0, 0, 0, 0) 25%, rgba(0, 0, 0, 0) 75%, rgba(0, 0, 0, 0.1) 75%, rgba(0, 0, 0, 0.1) 0),
  linear-gradient(45deg, rgba(0, 0, 0, 0.1) 25%, rgba(0, 0, 0, 0) 25%, rgba(0, 0, 0, 0) 75%, rgba(0, 0, 0, 0.1) 75%, rgba(0, 0, 0, 0.1) 0),
  rgb(255, 255, 255);
  background-size: $size $size;
  background-position: 0 0, $size/2 $size/2;
}

@mixin bgSaturation() {
  background: -moz-linear-gradient(top, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%),
  -moz-linear-gradient(left, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0) 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(0, 0, 0, 0)), color-stop(100%, rgba(0, 0, 0, 1))),
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(255, 255, 255, 1)), color-stop(100%, rgba(255, 255, 255, 0))); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%),
  -webkit-linear-gradient(left, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0) 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%),
  -o-linear-gradient(left, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0) 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(top, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%),
  -ms-linear-gradient(left, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0) 100%); /* IE10+ */
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%),
  linear-gradient(to right, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0) 100%); /* W3C */
}

@mixin bgHueHorizontal() {
  background: -moz-linear-gradient(right, rgb(255, 0, 0) 0%, rgb(255, 128, 0) 8%, rgb(255, 255, 0) 17%, rgb(128, 255, 0) 25%, rgb(0, 255, 0) 33%, rgb(0, 255, 128) 42%, rgb(0, 255, 255) 50%, rgb(0, 128, 255) 58%, rgb(0, 0, 255) 67%, rgb(128, 0, 255) 75%, rgb(255, 0, 255) 83%, rgb(255, 0, 128) 92%, rgb(255, 0, 0) 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, right top, left top, color-stop(0%, rgb(255, 0, 0)), color-stop(8%, rgb(255, 128, 0)), color-stop(17%, rgb(255, 255, 0)), color-stop(25%, rgb(128, 255, 0)), color-stop(33%, rgb(0, 255, 0)), color-stop(42%, rgb(0, 255, 128)), color-stop(50%, rgb(0, 255, 255)), color-stop(58%, rgb(0, 128, 255)), color-stop(67%, rgb(0, 0, 255)), color-stop(75%, rgb(128, 0, 255)), color-stop(83%, rgb(255, 0, 255)), color-stop(92%, rgb(255, 0, 128)), color-stop(100%, rgb(255, 0, 0))); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(right, rgb(255, 0, 0) 0%, rgb(255, 128, 0) 8%, rgb(255, 255, 0) 17%, rgb(128, 255, 0) 25%, rgb(0, 255, 0) 33%, rgb(0, 255, 128) 42%, rgb(0, 255, 255) 50%, rgb(0, 128, 255) 58%, rgb(0, 0, 255) 67%, rgb(128, 0, 255) 75%, rgb(255, 0, 255) 83%, rgb(255, 0, 128) 92%, rgb(255, 0, 0) 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(right, rgb(255, 0, 0) 0%, rgb(255, 128, 0) 8%, rgb(255, 255, 0) 17%, rgb(128, 255, 0) 25%, rgb(0, 255, 0) 33%, rgb(0, 255, 128) 42%, rgb(0, 255, 255) 50%, rgb(0, 128, 255) 58%, rgb(0, 0, 255) 67%, rgb(128, 0, 255) 75%, rgb(255, 0, 255) 83%, rgb(255, 0, 128) 92%, rgb(255, 0, 0) 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(right, rgb(255, 0, 0) 0%, rgb(255, 128, 0) 8%, rgb(255, 255, 0) 17%, rgb(128, 255, 0) 25%, rgb(0, 255, 0) 33%, rgb(0, 255, 128) 42%, rgb(0, 255, 255) 50%, rgb(0, 128, 255) 58%, rgb(0, 0, 255) 67%, rgb(128, 0, 255) 75%, rgb(255, 0, 255) 83%, rgb(255, 0, 128) 92%, rgb(255, 0, 0) 100%); /* IE10+ */
  background: linear-gradient(to left, rgb(255, 0, 0) 0%, rgb(255, 128, 0) 8%, rgb(255, 255, 0) 17%, rgb(128, 255, 0) 25%, rgb(0, 255, 0) 33%, rgb(0, 255, 128) 42%, rgb(0, 255, 255) 50%, rgb(0, 128, 255) 58%, rgb(0, 0, 255) 67%, rgb(128, 0, 255) 75%, rgb(255, 0, 255) 83%, rgb(255, 0, 128) 92%, rgb(255, 0, 0) 100%); /* W3C */

}

@mixin bgHueVertical() {
  background: -moz-linear-gradient(bottom, rgba(255, 0, 0, 1) 0%, rgba(255, 128, 0, 1) 8%, rgba(255, 255, 0, 1) 17%, rgba(128, 255, 0, 1) 25%, rgba(0, 255, 0, 1) 33%, rgba(0, 255, 128, 1) 42%, rgba(0, 255, 255, 1) 50%, rgba(0, 128, 255, 1) 58%, rgba(0, 0, 255, 1) 67%, rgba(128, 0, 255, 1) 75%, rgba(255, 0, 255, 1) 83%, rgba(255, 0, 128, 1) 92%, rgba(255, 0, 0, 1) 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, left bottom, left top, color-stop(0%, rgba(255, 0, 0, 1)), color-stop(8%, rgba(255, 128, 0, 1)), color-stop(17%, rgba(255, 255, 0, 1)), color-stop(25%, rgba(128, 255, 0, 1)), color-stop(33%, rgba(0, 255, 0, 1)), color-stop(42%, rgba(0, 255, 128, 1)), color-stop(50%, rgba(0, 255, 255, 1)), color-stop(58%, rgba(0, 128, 255, 1)), color-stop(67%, rgba(0, 0, 255, 1)), color-stop(75%, rgba(128, 0, 255, 1)), color-stop(83%, rgba(255, 0, 255, 1)), color-stop(92%, rgba(255, 0, 128, 1)), color-stop(100%, rgba(255, 0, 0, 1))); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(bottom, rgba(255, 0, 0, 1) 0%, rgba(255, 128, 0, 1) 8%, rgba(255, 255, 0, 1) 17%, rgba(128, 255, 0, 1) 25%, rgba(0, 255, 0, 1) 33%, rgba(0, 255, 128, 1) 42%, rgba(0, 255, 255, 1) 50%, rgba(0, 128, 255, 1) 58%, rgba(0, 0, 255, 1) 67%, rgba(128, 0, 255, 1) 75%, rgba(255, 0, 255, 1) 83%, rgba(255, 0, 128, 1) 92%, rgba(255, 0, 0, 1) 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(bottom, rgba(255, 0, 0, 1) 0%, rgba(255, 128, 0, 1) 8%, rgba(255, 255, 0, 1) 17%, rgba(128, 255, 0, 1) 25%, rgba(0, 255, 0, 1) 33%, rgba(0, 255, 128, 1) 42%, rgba(0, 255, 255, 1) 50%, rgba(0, 128, 255, 1) 58%, rgba(0, 0, 255, 1) 67%, rgba(128, 0, 255, 1) 75%, rgba(255, 0, 255, 1) 83%, rgba(255, 0, 128, 1) 92%, rgba(255, 0, 0, 1) 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(bottom, rgba(255, 0, 0, 1) 0%, rgba(255, 128, 0, 1) 8%, rgba(255, 255, 0, 1) 17%, rgba(128, 255, 0, 1) 25%, rgba(0, 255, 0, 1) 33%, rgba(0, 255, 128, 1) 42%, rgba(0, 255, 255, 1) 50%, rgba(0, 128, 255, 1) 58%, rgba(0, 0, 255, 1) 67%, rgba(128, 0, 255, 1) 75%, rgba(255, 0, 255, 1) 83%, rgba(255, 0, 128, 1) 92%, rgba(255, 0, 0, 1) 100%); /* IE10+ */
  background: linear-gradient(to top, rgba(255, 0, 0, 1) 0%, rgba(255, 128, 0, 1) 8%, rgba(255, 255, 0, 1) 17%, rgba(128, 255, 0, 1) 25%, rgba(0, 255, 0, 1) 33%, rgba(0, 255, 128, 1) 42%, rgba(0, 255, 255, 1) 50%, rgba(0, 128, 255, 1) 58%, rgba(0, 0, 255, 1) 67%, rgba(128, 0, 255, 1) 75%, rgba(255, 0, 255, 1) 83%, rgba(255, 0, 128, 1) 92%, rgba(255, 0, 0, 1) 100%); /* W3C */
}

.colorpicker {
  position: relative;
  display: none;
  font-size: inherit;
  color: inherit;
  text-align: left;
  list-style: none;
  background-color: #ffffff;
  background-clip: padding-box;
  border: 1px solid $outline-color;
  //box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
  padding: .75rem .75rem;
  width: ($bar-size-large + $base-margin + $bar-size-short);
  border-radius: 4px;
  box-sizing: content-box;
}

.colorpicker.colorpicker-disabled,
.colorpicker.colorpicker-disabled * {
  cursor: default !important;
}

.colorpicker div {
  position: relative;
}

.colorpicker-popup {
  position: absolute;
  top: 100%;
  left: 0;
  float: left;
  margin-top: 1px;
  z-index: 1060;
}

.colorpicker-popup.colorpicker-bs-popover-content {
  position: relative;
  top: auto;
  left: auto;
  float: none;
  margin: 0;
  z-index: initial;
  border: none;
  padding: 0.25rem 0; // popover padding correction
  border-radius: 0;
  background: none;
  box-shadow: none;
}

.colorpicker:before,
.colorpicker:after {
  content: "";
  display: table;
  clear: both;
  line-height: 0;
}

.colorpicker-clear {
  clear: both;
  display: block;
}

.colorpicker:before {
  content: '';
  display: inline-block;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 7px solid #ccc;
  border-bottom-color: $outline-color;
  position: absolute;
  top: -7px;
  left: auto;
  right: 6px;
}

.colorpicker:after {
  content: '';
  display: inline-block;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid #ffffff;
  position: absolute;
  top: -6px;
  left: auto;
  right: 7px;
}

.colorpicker.colorpicker-with-alpha {
  width: ($bar-size-large + (($base-margin + $bar-size-short) * 2));
}

.colorpicker.colorpicker-with-alpha .colorpicker-alpha {
  display: block;
}

.colorpicker-saturation {
  position: relative;
  width: $bar-size-large;
  height: $bar-size-large;
  @include bgSaturation();
  cursor: crosshair;
  float: left;
  box-shadow: $box-shadow-outline;
  margin-bottom: $base-margin;

  .colorpicker-guide {
    display: block;
    height: 6px;
    width: 6px;
    border-radius: 6px;
    border: 1px solid #000;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.8);
    position: absolute;
    top: 0;
    left: 0;
    margin: -3px 0 0 -3px;
  }
}

.colorpicker-hue,
.colorpicker-alpha {
  position: relative;
  width: $bar-size-short;
  height: $bar-size-large;
  float: left;
  cursor: row-resize;
  margin-left: $base-margin;
  margin-bottom: $base-margin;
}

.colorpicker-alpha-color {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.colorpicker-hue,
.colorpicker-alpha-color {
  box-shadow: $box-shadow-outline;
}

.colorpicker-hue .colorpicker-guide,
.colorpicker-alpha .colorpicker-guide {
  display: block;
  height: 4px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.4);
  position: absolute;
  top: 0;
  left: 0;
  margin-left: -2px;
  margin-top: -2px;
  right: -2px;
  z-index: 1;
}

.colorpicker-hue {
  @include bgHueVertical();
}

.colorpicker-alpha {
  @include bgCheckerBox();
  display: none;
}

.colorpicker-bar {
  min-height: $bar-size-short;
  margin: $base-margin 0 0 0;
  clear: both;
  text-align: center;
  font-size: 10px;
  line-height: normal;
  max-width: 100%;
  box-shadow: $box-shadow-outline;

  &:before {
    content: "";
    display: table;
    clear: both;
  }
}

.colorpicker-bar.colorpicker-bar-horizontal {
  height: $bar-size-large;
  width: $bar-size-short;
  margin: 0 0 $base-margin 0;
  float: left;
}

.colorpicker-input-addon {
  position: relative;
}

.colorpicker-input-addon i {
  display: inline-block;
  cursor: pointer;
  vertical-align: text-top;
  height: 16px;
  width: 16px;
  position: relative;
}

.colorpicker-input-addon:before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  display: inline-block;
  vertical-align: text-top;
  @include bgCheckerBox();
}

.colorpicker.colorpicker-inline {
  position: relative;
  display: inline-block;
  float: none;
  z-index: auto;
  vertical-align: text-bottom;
}

.colorpicker.colorpicker-horizontal {
  width: $bar-size-large;
  height: auto;
}

.colorpicker.colorpicker-horizontal .colorpicker-bar {
  width: $bar-size-large;
}

.colorpicker.colorpicker-horizontal .colorpicker-saturation {
  float: none;
  margin-bottom: 0;
}

.colorpicker.colorpicker-horizontal .colorpicker-hue,
.colorpicker.colorpicker-horizontal .colorpicker-alpha {
  float: none;
  width: $bar-size-large;
  height: $bar-size-short;
  cursor: col-resize;
  margin-left: 0;
  margin-top: $base-margin;
  margin-bottom: 0;
}

.colorpicker.colorpicker-horizontal .colorpicker-hue .colorpicker-guide,
.colorpicker.colorpicker-horizontal .colorpicker-alpha .colorpicker-guide {
  position: absolute;
  display: block;
  bottom: -2px;
  left: 0;
  right: auto;
  height: auto;
  width: 4px;
}

.colorpicker.colorpicker-horizontal .colorpicker-hue {
  @include bgHueHorizontal();
}

.colorpicker.colorpicker-horizontal .colorpicker-alpha {
  @include bgCheckerBox();
}

.colorpicker-inline:before,
.colorpicker-no-arrow:before,
.colorpicker-popup.colorpicker-bs-popover-content:before {
  content: none;
  display: none;
}

.colorpicker-inline:after,
.colorpicker-no-arrow:after,
.colorpicker-popup.colorpicker-bs-popover-content:after {
  content: none;
  display: none;
}


.colorpicker-alpha,
.colorpicker-saturation,
.colorpicker-hue {
  user-select: none;
}

.colorpicker,
.colorpicker-alpha,
.colorpicker-saturation,
.colorpicker-hue,
.colorpicker-bar {
  &.colorpicker-visible {
    display: block;
  }
}

.colorpicker,
.colorpicker-alpha,
.colorpicker-saturation,
.colorpicker-hue,
.colorpicker-bar {
  &.colorpicker-hidden {
    display: none;
  }
}

.colorpicker-inline.colorpicker-visible {
  display: inline-block;
}

.colorpicker.colorpicker-disabled:after {
  border: none;
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  background: rgba(233, 236, 239, 0.33);
  top: 0;
  left: 0;
  right: auto;
  z-index: 2;
  position: absolute;
}

.colorpicker.colorpicker-disabled .colorpicker-guide {
  display: none;
}

/** EXTENSIONS **/

.colorpicker-preview {
  @include bgCheckerBox();
}

.colorpicker-preview > div {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}

.colorpicker-bar.colorpicker-swatches {
  box-shadow: none;
  height: auto;
}

.colorpicker-swatches--inner {
  clear: both;
  margin-top: -$base-margin;
}

.colorpicker-swatch {
  position: relative;
  cursor: pointer;
  float: left;
  height: $bar-size-short;
  width: $bar-size-short;
  margin-right: $base-margin;
  margin-top: $base-margin;
  margin-left: 0;
  display: block;
  box-shadow: $box-shadow-outline;
  @include bgCheckerBox();
}

.colorpicker-swatch--inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

// saturation + hue vertical (clear margin-right on nth column + 1)
.colorpicker-swatch:nth-of-type(#{$columns + 1}n+0) {
  margin-right: 0;
}

// saturation + hue + alpha vertical (clear margin-right on nth column + 2)
.colorpicker-with-alpha {
  .colorpicker-swatch:nth-of-type(#{$columns + 1}n+0) {
    margin-right: $base-margin;
  }

  .colorpicker-swatch:nth-of-type(#{$columns + 2}n+0) {
    margin-right: 0;
  }
}

// horizontal mode (clear margin-right on nth column)
.colorpicker-horizontal {
  .colorpicker-swatch:nth-of-type(#{$columns}n+0) {
    margin-right: 0;
  }

  .colorpicker-swatch:nth-of-type(#{$columns + 1}n+0) {
    margin-right: $base-margin;
  }

  .colorpicker-swatch:nth-of-type(#{$columns + 2}n+0) {
    margin-right: $base-margin;
  }
}

.colorpicker-swatch:last-of-type:after {
  content: "";
  display: table;
  clear: both;
}

// RTL writing mode support
*[dir='rtl'] .colorpicker-element input,
.colorpicker-element[dir='rtl'] input,
.colorpicker-element input[dir='rtl'] {
  direction: ltr;
  text-align: right;
}