zen-desktop/src/browser/base/content/zen-styles/zen-gradient-generator.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/.
 */

#PanelUI-zen-gradient-generator {
  --panel-width: 300px;
  --panel-padding: 10px;
  min-width: var(--panel-width);
}

#PanelUI-zen-gradient-generator .panel-viewcontainer,
#PanelUI-zen-gradient-generator .panel-viewstack {
  display: flex;
  flex-direction: column;
  width: 100%;
}

#PanelUI-zen-gradient-generator-controls {
  align-items: center;
  gap: var(--panel-padding);
}

#zen-theme-picker-color {
  align-items: start;
  width: 100%;

  & label {
    font-size: 12px;
    margin-left: 0;
    font-weight: 600;
    margin-bottom: 5px;
  }

  & input,
  & > hbox {
    width: 100%;
    position: relative;
  }
}

#PanelUI-zen-gradient-generator-custom-input {
  position: relative;
  padding-right: 6px !important;
}

#PanelUI-zen-gradient-generator-color-custom-add {
  position: absolute;
  right: 2px;
  top: 4px;
  cursor: pointer;
}

#PanelUI-zen-gradient-colors-wrapper {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 10px;
  align-items: center;
  gap: 1.5rem;
  padding: 0 var(--panel-padding);

  @media (-moz-platform: macos) {
    gap: 3rem;
  }

  & label {
    margin-left: 0;
    font-weight: 600;
    margin-inline: 0;
    margin-bottom: 2px;
    @media (-moz-platform: macos) {
      font-size: larger;
    }
  }
}

#PanelUI-zen-gradient-generator-predefined {
  display: flex;
  justify-content: space-around;
  align-items: center;
  margin: 5px auto 10px auto;
  width: 100%;

  & > box {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    &::after {
      content: '';
      position: absolute;
      width: 18px;
      height: 18px;
      top: 0;
      left: 0;
      outline: 2px solid var(--zen-toolbar-element-bg);
      border-radius: 50%;
      pointer-events: none;
    }
  }
}

#PanelUI-zen-gradient-generator-custom-list {
  margin-top: 15px;

  &:not(:has(.zen-theme-picker-custom-list-item)) {
    display: none;
  }

  & .zen-theme-picker-custom-list-item {
    display: flex;
    padding: 5px;
    position: relative;

    & .zen-theme-picker-dot-custom {
      background: var(--zen-theme-picker-dot-color);
      border: 1px solid var(--zen-colors-border);
      border-radius: 5px;
      width: 20px;
      height: 20px;
      margin-right: 10px;
    }

    & .zen-theme-picker-custom-list-item-label {
      font-size: 12px;
      font-weight: 600;
      margin: 0;
      display: flex;
      align-items: center;
    }

    & .zen-theme-picker-custom-list-item-remove {
      padding: 2px 4px !important;
      margin: 0 !important;
      margin-left: auto !important;
      transition: opacity 0.1s;
      opacity: 0;
    }

    &:hover .zen-theme-picker-custom-list-item-remove {
      opacity: 1;
    }
  }
}

#PanelUI-zen-gradient-generator-opacity,
#PanelUI-zen-gradient-generator-texture {
  margin: 0 !important;
  margin-top: 5px !important;
  background: transparent;

  &::-moz-range-thumb {
    background: var(--zen-colors-tertiary);
    border: 2px solid var(--zen-colors-border);
    border-radius: 12px;
    height: 25px;
    width: 13px;
    cursor: pointer;
  }

  &::-moz-range-track {
    background: var(--zen-colors-border);
    border-radius: 999px;
    height: 6px;
  }

  &::-moz-range-progress {
    background: var(--zen-primary-color);
    border-radius: 999px;
    height: 8px;
  }
}

.zen-theme-picker-gradient {
  position: relative;
  border-radius: calc(var(--zen-border-radius) - 2px);
  overflow: hidden;
  border-radius: var(--zen-border-radius);

  min-height: calc(var(--panel-width) - var(--panel-padding) * 2);
  margin-bottom: 20px;

  background: var(--zen-toolbar-element-bg);
  background-image: radial-gradient(light-dark(rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.4)) 1px, transparent 0);
  background-position: -19px -19px;
  background-size: 5px 5px;

  & .zen-theme-picker-dot {
    position: absolute;
    z-index: 2;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--zen-theme-picker-dot-color);
    @media (-prefers-color-scheme: dark) {
      box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
    }
    cursor: pointer;
    border: 2px solid #ffffff;
    animation: zen-theme-picker-dot-animation 0.5s;
    transform: translate(-50%, -50%);

    &:first-of-type {
      width: 30px;
      height: 30px;
      border-width: 3px;
      z-index: 2;
      transition: transform 0.1s;
      &:hover {
        transform: scale(1.05) translate(-50%, -50%);
      }
    }

    &[dragging='true'] {
      transform: scale(1.2) translate(-50%, -50%) !important;
    }
  }
}

#PanelUI-zen-gradient-generator-color-click-to-add {
  position: absolute;
  font-weight: 600;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  pointer-events: none;

  &[hidden] {
    display: none;
  }
}

#PanelUI-zen-gradient-generator-color-actions {
  display: flex;
  position: absolute;
  bottom: 8px;
  left: 50%;
  z-index: 1;
  transform: translateX(-50%);
  & .separator,
  & #PanelUI-zen-gradient-generator-color-toggle-algo {
    background: light-dark(rgba(0, 0, 0, 0.1), rgba(255, 255, 255, 0.1));
  }

  & button {
    border: none !important;
    padding: 0.4rem !important;
    min-width: fit-content !important;
    transition: background 0.2s;
    appearance: none;

    & .button-box {
      gap: 0.1rem;
    }

    &:not(#PanelUI-zen-gradient-generator-color-toggle-algo) .button-text {
      display: none;
    }

    &:hover {
      background: light-dark(#cfcfcf, #313131);
    }

    &[disabled] {
      opacity: 0.5;
      cursor: not-allowed;
    }
  }

  & .separator {
    width: 1px;
    margin: 0 0.5rem;
    height: 30px;
  }
}

@media not (-moz-bool-pref: 'zen.theme.gradient.show-custom-colors') {
  #PanelUI-zen-gradient-generator-custom-colors {
    display: none !important;
  }
}

#PanelUI-zen-gradient-generator-texture-wrapper {
  width: 4rem;
  height: 4rem;
  position: relative;

  @media (-moz-platform: macos) {
    width: 25%;
    aspect-ratio: 1;
    height: unset;
  }

  &::after {
    content: '';
    position: absolute;
    width: 60%;
    height: 60%;
    border: 1px solid color-mix(in srgb, var(--zen-colors-border) 50%, transparent 50%);
    border-radius: 50%;
    /* 3d effect */
    background: linear-gradient(-45deg, transparent -10%, light-dark(rgba(0, 0, 0, 0.1), rgba(255, 255, 255, 0.1)) 110%);
    z-index: 2;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
  }

  &::before {
    background-image: url(chrome://browser/content/zen-images/grain-bg.png);
    opacity: var(--zen-grainy-background-opacity, 0);
    mix-blend-mode: hard-light;
    width: 60%;
    height: 60%;
    pointer-events: none;
    top: 50%;
    border-radius: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    content: '';
    position: absolute;
  }

  & .zen-theme-picker-texture-dot {
    height: 4px;
    width: 4px;
    border-radius: 50%;
    background: light-dark(rgba(0, 0, 0, 0.2), rgba(255, 255, 255, 0.2));
    position: absolute;
    transition: opacity 0.2s;
    transform: translate(-50%, -50%);
    pointer-events: none;
    &:not(.active) {
      opacity: 0.2;
    }
  }

  & #PanelUI-zen-gradient-generator-texture-handler {
    width: 6px;
    height: 12px;
    background: light-dark(#757575, #d1d1d1);
    position: absolute;
    transition: height 0.1s;
    z-index: 2;
    border-radius: 2px;
    cursor: pointer;
    &:hover {
      height: 14px;
    }
  }
}