/**
 * Returns a `className` string that includes the fade-out transition and,
 * when `isFocused` is true, the matching virtual-focus variant.
 *
 * Spread the result onto the component:
 * ```tsx
 * <Flex {...getVirtualFocusStyles(isFocused, 'neutral')} />
 * ```
 *
 * @internal
 */
export declare function getVirtualFocusStyles(isFocused: boolean, variant?: 'neutral' | 'primary'): {
    className: string;
};