opencode/packages/ui/src/components/radio-group.css

[data-component="radio-group"] {
  --radio-group-height: 28px;
  --radio-group-gap: 4px;
  --radio-group-padding: 2px;

  display: inline-flex;

  [data-slot="radio-group-wrapper"] {
    all: unset;
    background-color: var(--surface-inset-base);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-xxs-border);
    display: inline-flex;
    height: var(--radio-group-height);
    margin: 0;
    overflow: visible;
    padding: 0;
    position: relative;
    width: fit-content;
  }

  &[data-fill] [data-slot="radio-group-wrapper"] {
    width: 100%;
  }

  [data-slot="radio-group-items"] {
    display: inline-flex;
    flex-direction: row;
    gap: var(--radio-group-gap);
    height: 100%;
    list-style: none;
    position: relative;
    z-index: 1;
  }

  &[data-fill] [data-slot="radio-group-items"] {
    width: 100%;
  }

  [data-slot="radio-group-indicator"] {
    background: var(--button-secondary-base);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-xs-border-base);
    content: "";
    opacity: var(--indicator-opacity, 1);
    pointer-events: none;
    position: absolute;
    transition:
      opacity 200ms ease-out,
      box-shadow 100ms ease-in-out,
      width 200ms cubic-bezier(0.22, 1.2, 0.36, 1),
      height 200ms cubic-bezier(0.22, 1.2, 0.36, 1),
      transform 300ms cubic-bezier(0.22, 1.2, 0.36, 1);
    will-change: transform;
    z-index: 0;
  }

  [data-slot="radio-group-item"] {
    display: flex;
    height: 100%;
    min-width: 0;
    position: relative;
  }

  &[data-fill] [data-slot="radio-group-item"] {
    flex: 1;
  }

  [data-slot="radio-group-item-input"] {
    border-width: 0;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    white-space: nowrap;
    width: 1px;
  }

  [data-slot="radio-group-item-label"] {
    color: var(--text-weak);
    cursor: default;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family-sans);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    flex: 1;
    height: 100%;
    line-height: 1;
    padding: var(--radio-group-padding);
    position: relative;
    transition:
      color 200ms ease-out,
      opacity 200ms ease-out;
    user-select: none;
  }

  [data-slot="radio-group-item-control"] {
    align-items: center;
    border-radius: var(--radius-xs);
    display: inline-flex;
    height: 100%;
    justify-content: center;
    min-width: 0;
    padding: var(--radio-group-control-padding, 0 10px);
    transition: background-color 200ms ease-out;
    width: 100%;
  }

  &[data-pad="none"] {
    --radio-group-control-padding: 0;
  }

  &[data-pad="normal"] {
    --radio-group-control-padding: 0 10px;
  }

  /* Checked state */
  [data-slot="radio-group-item-input"][data-checked] + [data-slot="radio-group-item-label"] {
    color: var(--text-strong);
  }

  /* Hover state: match the inset background (adds subtle density) */
  [data-slot="radio-group-item-input"]:not([data-checked], [data-disabled])
    + [data-slot="radio-group-item-label"]:hover
    [data-slot="radio-group-item-control"] {
    background-color: var(--surface-inset-base);
  }

  /* Do not overlay hover on the active segment */
  [data-slot="radio-group-item-input"][data-checked]
    + [data-slot="radio-group-item-label"]:hover
    [data-slot="radio-group-item-control"] {
    background-color: transparent;
  }

  /* Disabled state */
  [data-slot="radio-group-item-input"][data-disabled] + [data-slot="radio-group-item-label"] {
    cursor: not-allowed;
    opacity: 0.5;
  }

  /* Focus state */
  [data-slot="radio-group-wrapper"]:has([data-slot="radio-group-item-input"]:focus-visible)
    [data-slot="radio-group-indicator"] {
    box-shadow: var(--shadow-xs-border-focus);
  }

  /* Hide indicator when nothing is checked */
  [data-slot="radio-group-wrapper"]:not(:has([data-slot="radio-group-item-input"][data-checked]))
    [data-slot="radio-group-indicator"] {
    --indicator-opacity: 0;
  }

  /* Vertical orientation */
  &[aria-orientation="vertical"] [data-slot="radio-group-items"] {
    flex-direction: column;
  }

  /* Small size variant */
  &[data-size="small"] {
    --radio-group-height: 24px;
    --radio-group-gap: 3px;
    --radio-group-padding: 2px;

    [data-slot="radio-group-item-label"] {
      font-size: 12px;
    }

    [data-slot="radio-group-item-control"] {
      padding: var(--radio-group-control-padding, 0 8px);
    }
  }

  &[data-size="small"][data-pad="normal"] {
    --radio-group-control-padding: 0 8px;
  }

  /* Disabled root state */
  &[data-disabled] {
    opacity: 0.5;
    cursor: not-allowed;
  }
}