export declare const focusVisibleStyle: (outlineOffset?: string) => {
    '&:focus-visible': {
        outlineOffset: string;
        outline: string;
    };
};
/**
 * Gets all focusable elements within a container element.
 *
 * @param container - The container element to search within
 * @returns Array of focusable HTML elements, or empty array if container is null
 *
 * @example
 * ```tsx
 * const focusableElements = getFocusableElements(popoverRef.current);
 * focusableElements[0]?.focus();
 * ```
 */
export declare const getFocusableElements: (container: HTMLElement | null) => HTMLElement[];