import type { CSSProperties } from "react";
import type { ICaptchaThemeProperties } from "../interface";
/**
 * Generates CSS variables based on theme options
 * @param {ICaptchaThemeProperties} properties - The theme properties
 * @returns {CSSProperties} The generated CSS variables
 */
export declare const GenerateThemeVariables: (properties: ICaptchaThemeProperties) => CSSProperties;