firefox/devtools/client/shared/widgets/spectrum.css

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

:root {
  --accessibility-contrast-swatch-border-color: var(--grey-40);
  --learn-more-underline: light-dark(var(--grey-30), var(--grey-50));

  :root[forced-colors-adjust] & {
    --accessibility-contrast-swatch-border-color: GrayText;
    --learn-more-underline: CanvasText;
  }
}

#eyedropper-button {
  margin-inline-end: 5px;
  display: block;

  :root[forced-colors-active] & {
    border: 1px solid currentColor;
  }
}

#eyedropper-button::before {
  background-image: url(chrome://devtools/skin/images/command-eyedropper.svg);
}

/* Mix-in classes */

.spectrum-checker {
  background-color: #eee;
  background-image: linear-gradient(
      45deg,
      #ccc 25%,
      transparent 25%,
      transparent 75%,
      #ccc 75%,
      #ccc
    ),
    linear-gradient(
      45deg,
      #ccc 25%,
      transparent 25%,
      transparent 75%,
      #ccc 75%,
      #ccc
    );
  background-size: 12px 12px;
  background-position: 0 0, 6px 6px;
  /* Make sure that the background color is properly set in High Contrast Mode */
  forced-color-adjust: none;
}

.spectrum-box {
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 2px;
  background-clip: content-box;

  :root[forced-colors-active] & {
    border-color: initial;
  }
}

/* Elements */

#spectrum-tooltip {
  padding: 5px;
}

/**
 * Spectrum controls set the layout for the controls section of the color picker.
 */
.spectrum-controls {
  display: flex;
  justify-content: space-between;
  margin-block-start: 10px;
  margin-inline-end: 5px;
}

.spectrum-controls {
  width: 200px;
}

.spectrum-container {
  display: flex;
  flex-direction: column;
  margin: -1px;
  padding-block-end: 6px;
}

/**
 * This styles the color preview and adds a checkered background overlay inside of it. The overlay
 * can be manipulated using the --overlay-color variable.
 */
.spectrum-color-preview {
  --overlay-color: transparent;
  border: 1px solid transparent;
  border-radius: 50%;
  width: 27px;
  height: 27px;
  background-color: #fff;
  background-image: linear-gradient(var(--overlay-color), var(--overlay-color)),
    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%),
    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%);
  background-size: 12px 12px;
  background-position: 0 0, 6px 6px;
  /* Make sure that the background color is properly set in High Contrast Mode */
  forced-color-adjust: none;

  :root[forced-colors-active] & {
    border-color: CanvasText;
  }
}

.spectrum-color-preview.high-luminance {
  border-color: #ccc;
}

.spectrum-slider-container {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 130px;
  margin-inline-start: 10px;
  height: 30px;
}

/* Keep aspect ratio:
http://www.briangrinstead.com/blog/keep-aspect-ratio-with-html-and-css */
.spectrum-color-picker {
  position: relative;
  width: 205px;
  height: 120px;
  /* Make sure that the background color is properly set in High Contrast Mode */
  forced-color-adjust: none;
}

.spectrum-color {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 100%;
}

.spectrum-sat,
.spectrum-val {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.spectrum-alpha {
  margin-block-start: 3px;
}

.spectrum-alpha,
.spectrum-hue {
  position: relative;
  height: 8px;
}

.spectrum-alpha-input,
.spectrum-hue-input {
  width: 100%;
  margin: 0;
  position: absolute;
  height: 8px;
  border-radius: 2px;
  direction: initial;
}

.spectrum-hue-input,
.spectrum-alpha-input {
  outline-offset: 4px;
}

.spectrum-hue-input::-moz-range-thumb,
.spectrum-alpha-input::-moz-range-thumb {
  cursor: pointer;
  height: 12px;
  width: 12px;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.6);
  background: #fff;
  border-radius: 50%;
  opacity: 0.9;
  border: none;
}

:root[forced-colors-active] :is(
  .spectrum-hue-input,
  .spectrum-alpha-input
)::-moz-range-thumb {
  background: ButtonFace;
  border: 2px solid ButtonText;
}

:root[forced-colors-active] :is(
  .spectrum-hue-input,
  .spectrum-alpha-input
):is(:hover, :focus-visible)::-moz-range-thumb {
  border-color: SelectedItem;
}

.spectrum-hue-input::-moz-range-track {
  border-radius: 2px;
  height: 8px;
  background: linear-gradient(
    to right,
    #ff0000 0%,
    #ffff00 17%,
    #00ff00 33%,
    #00ffff 50%,
    #0000ff 67%,
    #ff00ff 83%,
    #ff0000 100%
  );
  /* Make sure that the background color is properly set in High Contrast Mode */
  forced-color-adjust: none;
}

.spectrum-sat {
  background-image: linear-gradient(to right, #fff, rgba(204, 154, 129, 0));
}

.spectrum-val {
  background-image: linear-gradient(to top, #000000, rgba(204, 154, 129, 0));
}

.spectrum-dragger {
  user-select: none;
  position: absolute;
  top: 0;
  left: 0;
  cursor: pointer;
  border-radius: 50%;
  height: 8px;
  width: 8px;
  border: 1px solid white;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.6);
}

.spectrum-color-contrast {
  padding-block-start: 8px;
  padding-inline-start: 4px;
  padding-inline-end: 4px;
  line-height: 1.2em;
}

.contrast-ratio-header-and-single-ratio,
.contrast-ratio-range {
  display: flex;
  align-items: stretch;
}

.contrast-ratio-range {
  margin-block-start: 4px;
  margin-inline-start: 1px;
  margin-block-end: 2px;
}

.spectrum-color-contrast.visible {
  display: block;
  color: var(--theme-text-color-strong);
}

.spectrum-color-contrast.visible:not(.range) .contrast-ratio-single,
.spectrum-color-contrast.visible.range .contrast-ratio-range {
  display: flex;
}

.spectrum-color-contrast,
.spectrum-color-contrast .contrast-ratio-range,
.spectrum-color-contrast.range .contrast-ratio-single,
.spectrum-color-contrast.error .accessibility-color-contrast-separator,
.spectrum-color-contrast.error .contrast-ratio-max {
  display: none;
}

.contrast-ratio-label {
  font-size: 10px;
  padding-inline-end: 4px;
}

.spectrum-color-contrast .accessibility-contrast-value {
  font-size: 10px;
  border-bottom: 1px solid var(--learn-more-underline);

  /* opt-out of forced colors to avoid the blackplaing that clips the border */
  forced-color-adjust: none;
}

.spectrum-color-contrast.visible:not(.error) .contrast-ratio-single .accessibility-contrast-value {
  margin-inline-start: 10px;
}

.spectrum-color-contrast.visible:not(.error) .contrast-ratio-min .accessibility-contrast-value,
.spectrum-color-contrast.visible:not(.error) .contrast-ratio-max .accessibility-contrast-value{
  margin-inline-start: 7px;
}

.spectrum-color-contrast .accessibility-contrast-value:not(:empty)::before {
  width: auto;
  content: none;
  padding-inline-start: 2px;
}

.spectrum-color-contrast.visible:not(.error) .contrast-value-and-swatch:before {
  display: inline-flex;
  content: "";
  height: 9px;
  width: 9px;
  background-color: var(--accessibility-contrast-color);
  /* opt-out of forced color so we can actually see the colors */
  forced-color-adjust: none;
}

.spectrum-color-contrast.visible:not(.error):-moz-locale-dir(ltr) .contrast-value-and-swatch:before {
  box-shadow: 0 0 0 1px var(--accessibility-contrast-swatch-border-color), 6px 5px var(--accessibility-contrast-bg),
    6px 5px 0 1px var(--accessibility-contrast-swatch-border-color);
}

.spectrum-color-contrast.visible:not(.error):-moz-locale-dir(rtl) .contrast-value-and-swatch:before {
  box-shadow: 0 0 0 1px var(--accessibility-contrast-swatch-border-color), -6px 5px var(--accessibility-contrast-bg),
    -6px 5px 0 1px var(--accessibility-contrast-swatch-border-color);
}

.spectrum-color-contrast .accessibility-color-contrast-separator:before {
  margin-inline-end: 4px;
  color: var(--theme-body-color);
}

.spectrum-color-contrast .accessibility-color-contrast-large-text {
  margin-inline: 1px;
  unicode-bidi: isolate;
}

.learn-more {
  background-repeat: no-repeat;
  -moz-context-properties: fill;
  background-image: url(resource://devtools-shared-images/info-small.svg);
  background-color: transparent;
  fill: var(--theme-icon-dimmed-color);
  border: none;
  margin-inline-start: auto;
  margin-block-start: 1px;
  aspect-ratio: 1 / 1;
  width: 12px;
}

.learn-more:-moz-locale-dir(ltr) {
  margin-inline-end: -5px;
}

.learn-more:-moz-locale-dir(rtl) {
  margin-inline-end: -2px;
}

.learn-more:hover,
.learn-more:focus {
  fill: var(--theme-icon-hover-color);
  cursor: pointer;
  outline: none;
}