components/Radio/style/index.less
@import './token.less';
@import '../../style/mixin.less';

@radio-prefix-cls: ~'@{prefix}-radio';

.@{radio-prefix-cls},
.@{radio-prefix-cls}-button {
  > input[type='radio'] {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
    top: 0;
    left: 0;

    &:focus-visible + .@{prefix}-radio-icon-hover::before {
      background-color: @icon-hover-color-bg;
      opacity: 1;
    }

    &:focus-visible + .@{prefix}-radio-button-inner {
      box-shadow: inset 0 0 0 2px @radio-color-box-shadow;
      border-radius: inherit;
    }
  }
}

.icon-hover(@radio-prefix-cls, @radio-layout-height, @radio-size-mask-height);

.@{radio-prefix-cls} {
  position: relative;
  cursor: pointer;
  padding-left: (@radio-size-mask-height / 2) - (@radio-layout-height / 2);
  display: inline-block;
  font-size: @radio-font-text-size;
  line-height: unset;

  // radio circle
  &-text {
    color: @radio-color-text;
    margin-left: @radio-margin-text-left;
  }

  &-mask-wrapper {
    vertical-align: middle;
    top: -0.09em;
    position: relative;
    line-height: 1;
  }

  &-mask {
    display: block;
    border: @radio-border-width solid @radio-color-border;
    box-sizing: border-box;
    height: @radio-layout-height;
    width: @radio-layout-height;
    border-radius: @radio-border-radius;
    position: relative;
    line-height: @radio-layout-height;

    &::after {
      display: inline-block;
      box-sizing: border-box;
      position: absolute;
      content: '';
      border-radius: @radio-border-radius;
      background-color: @radio-color-bg;
      width: @radio-layout-height - @radio-border-width * 2;
      height: @radio-layout-height - @radio-border-width * 2;
      top: 0;
      left: 0;
      transform: scale(1);
      transition: transform @transition-duration-3 @transition-timing-function-overshoot;
    }
  }

  &:hover &-mask {
    border-color: @radio-color-border_hover;
  }

  &-checked &-mask {
    background-color: @radio-color-bg_checked;
    border-color: @radio-color-bg_checked;

    &::after {
      transform: scale(0.4);
      background-color: var(~'@{arco-cssvars-prefix}-color-white');
    }
  }

  &-checked:hover &-mask {
    border-color: @radio-color-bg_checked;
  }

  &-disabled {
    cursor: not-allowed;

    .@{prefix}-radio-icon-hover {
      cursor: not-allowed;
    }

    .@{radio-prefix-cls}-text {
      color: @radio-color-text_disabled;
    }
  }

  &-disabled &-mask {
    border-color: @radio-color-border_disabled;

    &::after {
      background-color: @radio-color-bg_disabled;
    }
  }

  &-disabled:hover &-mask {
    border-color: @radio-color-border_disabled;
  }

  &-checked&-disabled {
    .@{radio-prefix-cls}-mask,
    &:hover .@{radio-prefix-cls}-mask {
      border-color: @color-transparent;
      background-color: @radio-color-bg_checked_disabled;
    }

    .@{radio-prefix-cls}-mask::after {
      background-color: @radio-color-dot-bg_checked_disabled;
    }

    .@{radio-prefix-cls}-text {
      color: @radio-color-text_checked_disabled;
    }
  }

  &:hover {
    .@{prefix}-radio-icon-hover::before {
      background-color: @radio-mask-bg-color-bg;
    }
  }
}

// group type
.@{radio-prefix-cls}-group {
  display: inline-block;
  box-sizing: border-box;

  .@{radio-prefix-cls} {
    margin-right: @radio-group-margin-right;
  }

  // button type
  &-type-button {
    // ButtonGroup 中使用了 z-index: -1 的伪元素实现背景，为容器提供独立的层叠上下文以保证内部 Radio 表现正常
    position: relative;
    z-index: 0;
    padding: (@radio-button-spacing / 2);
    line-height: @radio-size-default-height - @radio-button-spacing * 2;
  }
}

.@{radio-prefix-cls}-button {
  display: inline-block;
  position: relative;
  margin: (@radio-button-spacing / 2);
  border-radius: @radio-button-border-radius;
  font-size: @radio-font-text-size;
  line-height: @radio-size-default-height - @radio-button-spacing * 2;
  color: @radio-button-color-text;
  background-color: @radio-button-color-bg;
  cursor: pointer;
  transition: all @transition-duration-1 @transition-timing-function-linear;

  &-inner {
    display: block;
    position: relative;
    padding: 0 @radio-button-padding-horizontal;
  }

  // 按钮之间的分割线
  &:not(:first-of-type)::before {
    position: absolute;
    top: 50%;
    left: -((@radio-button-spacing - @radio-button-size-separator-width) / 2) - @radio-button-size-separator-width;
    transform: translateY(-50%);
    display: block;
    height: @radio-button-size-separator-height;
    width: @radio-button-size-separator-width;
    background-color: @radio-button-color-separator-bg;
    content: '';
    transition: all @transition-duration-1 @transition-timing-function-linear;
  }

  // 被选中的按钮不需要左右的分割线
  &:hover::before,
  &:hover + &::before,
  &.@{radio-prefix-cls}-checked::before,
  &.@{radio-prefix-cls}-checked + &::before {
    opacity: 0;
  }

  // 按钮下层的背景色
  &::after {
    content: ' ';
    display: block;
    position: absolute;
    left: -@radio-button-spacing;
    top: $left;
    right: $left;
    bottom: $left;
    background-color: @radio-group-button-color-bg;
    pointer-events: none;
    z-index: -1;
  }

  &:first-of-type::after {
    border-top-left-radius: @radio-button-bg-border-radius;
    border-bottom-left-radius: @radio-button-bg-border-radius;
  }

  &:last-of-type::after {
    border-top-right-radius: @radio-button-bg-border-radius;
    border-bottom-right-radius: @radio-button-bg-border-radius;
  }

  &:hover {
    background-color: @radio-button-color-bg_hover;
    color: @radio-button-color-text_hover;
  }

  &.@{radio-prefix-cls}-checked {
    background-color: @radio-button-color-bg_active;
    color: @radio-button-color-text_active;
    font-weight: @radio-button-font-text-weight_active;
  }

  &.@{radio-prefix-cls}-disabled {
    cursor: not-allowed;
    background-color: @radio-button-color-bg_disabled;
    color: @radio-button-color-text_disabled;
  }

  &.@{radio-prefix-cls}-disabled.@{radio-prefix-cls}-checked {
    background-color: @radio-button-color-bg_checked_disabled;
    color: @radio-button-color-text_checked_disabled;
  }
}

// size small default large huge
.@{radio-prefix-cls} {
  &-size-small {
    line-height: @radio-size-small-height;

    &.@{radio-prefix-cls}-group-type-button,
    .@{radio-prefix-cls}-button {
      font-size: @radio-font-text-size_small;
      line-height: @radio-size-small-height - @radio-button-spacing * 2;
    }
  }

  &-size-large {
    line-height: @radio-size-large-height;

    &.@{radio-prefix-cls}-group-type-button,
    .@{radio-prefix-cls}-button {
      font-size: @radio-font-text-size_large;
      line-height: @radio-size-large-height - @radio-button-spacing * 2;
    }
  }

  &-size-mini {
    line-height: @radio-size-mini-height;

    &.@{radio-prefix-cls}-group-type-button,
    .@{radio-prefix-cls}-button {
      font-size: @radio-font-text-size_mini;
      line-height: @radio-size-mini-height - @radio-button-spacing * 2;
    }
  }
}

// vertical direction
.@{radio-prefix-cls}-group-direction-vertical {
  // default radio
  .@{radio-prefix-cls} {
    display: block;
    line-height: @radio-group-size-line-height_vertical;
    margin-right: 0;
  }
}

// dark mode

@{arco-theme-tag} {
  &[arco-theme='dark'] {
    .@{radio-prefix-cls}-button.@{radio-prefix-cls}-checked,
    .@{radio-prefix-cls}-button:not(.@{radio-prefix-cls}-disabled):hover {
      background-color: @radio-button-color-bg_active_dark;
    }

    .@{radio-prefix-cls}-button::after {
      background-color: @radio-group-button-color-bg_dark;
    }
  }
}

.@{radio-prefix-cls}-rtl {
  padding-left: 0;
  padding-right: (@radio-size-mask-height / 2) - (@radio-layout-height / 2);

  .@{radio-prefix-cls} {
    &-text {
      margin-left: 0;
      margin-right: @radio-margin-text-left;
    }
  }
}

.@{radio-prefix-cls}-group-rtl {
  .@{radio-prefix-cls} {
    margin-right: 0;
    margin-left: @radio-group-margin-right;
  }

  &.@{radio-prefix-cls}-group-direction-vertical {
    .@{radio-prefix-cls} {
      margin-right: unset;
      margin-left: 0;
    }
  }
}
