/**
 * @module Radio
 * @description A radio button component system with group management for single-selection scenarios. Features brutalist styling with customizable sizes and validation states.
 */
import React, { InputHTMLAttributes } from 'react';
/**
 * Props for the RadioGroup component
 */
export interface RadioGroupProps {
    /**
     * Name attribute for the radio group (required for form handling)
     */
    name: string;
    /**
     * Currently selected value (controlled mode)
     */
    value?: string;
    /**
     * Default selected value (uncontrolled mode)
     */
    defaultValue?: string;
    /**
     * Callback function called when the selection changes
     */
    onChange?: (value: string) => void;
    /**
     * Radio buttons to render within the group
     */
    children: React.ReactNode;
    /**
     * Layout direction for the radio buttons
     * @default 'vertical'
     */
    direction?: 'horizontal' | 'vertical';
    /**
     * Size variant for all radio buttons in the group
     * @default 'md'
     */
    size?: 'sm' | 'md' | 'lg';
    /**
     * Whether all radio buttons in the group are disabled
     * @default false
     */
    disabled?: boolean;
    /**
     * Whether the group is in an error state
     * @default false
     */
    error?: boolean;
    /**
     * Whether to apply brutalist shadow effect to radio buttons
     * @default true
     */
    brutalistShadow?: boolean;
    /**
     * Additional CSS classes to apply to the group container
     */
    className?: string;
    /**
     * Additional inline styles to apply to the group container
     */
    style?: React.CSSProperties;
}
export declare const RadioGroup: React.FC<RadioGroupProps>;
/**
 * Props for the Radio component
 */
export interface RadioProps extends Omit<InputHTMLAttributes<HTMLInputElement>, 'type' | 'size' | 'onChange'> {
    /**
     * The value of this radio button
     */
    value: string;
    /**
     * Label text or element to display next to the radio button
     */
    label?: React.ReactNode;
    /**
     * Size variant for this specific radio button (overrides group size)
     */
    size?: 'sm' | 'md' | 'lg';
    /**
     * Whether this specific radio button is disabled (overrides group disabled)
     */
    disabled?: boolean;
    /**
     * Whether this specific radio button is in error state (overrides group error)
     */
    error?: boolean;
    /**
     * Whether to apply brutalist shadow effect (overrides group setting)
     */
    brutalistShadow?: boolean;
}
export declare const Radio: React.ForwardRefExoticComponent<RadioProps & React.RefAttributes<HTMLInputElement>>;