import { LitElement } from 'lit';
import '../Icon/Icon';
declare global {
    interface HTMLElementTagNameMap {
        'ctt-radio-button': CttRadioButton;
    }
}
declare const CttRadioButton_base: (new (...args: any[]) => import("../../utils/form-associated-mixin").FormAssociatedBase) & typeof LitElement;
/**
 * CTT RadioButton Component
 *
 * A comprehensive radio button component with built-in validation, error handling,
 * and accessibility features. Works seamlessly across different frameworks.
 *
 * @fires change - Fired when the radio button state changes
 *
 * @example
 * ```html
 * <ctt-radio-button
 *   label="Option 1"
 *   name="choice"
 *   value="option1"
 *   required
 * ></ctt-radio-button>
 * ```
 *
 * @example
 * ```javascript
 * // React usage
 * <ctt-radio-button
 *   label="Subscribe to newsletter"
 *   name="subscription"
 *   value="yes"
 *   checked={isSubscribed}
 *   onchange={(e) => setSelectedValue(e.detail.value)}
 * />
 * ```
 */
export declare class CttRadioButton extends CttRadioButton_base {
    static styles: import("lit").CSSResult;
    /**
     * The label text to display next to the radio button
     */
    label: string;
    /**
     * The name attribute for the radio button input (required for grouping)
     */
    name: string;
    /**
     * The value attribute for the radio button input
     */
    value: string;
    /**
     * Whether the radio button is checked
     */
    get checked(): boolean;
    set checked(value: boolean);
    _checked: boolean;
    /**
     * Whether the radio button is disabled
     */
    disabled: boolean;
    /**
     * Whether the radio button is required
     */
    required: boolean;
    /**
     * Whether the component should display error state styling
     */
    error: boolean;
    /**
     * The id attribute for the radio button element
     */
    id: string;
    /**
     * Additional CSS classes to apply
     */
    className: string;
    /**
     * Accessible label for screen readers when a visual label is not provided
     */
    ariaLabel: string | null;
    /**
     * IDs of elements that describe this radio button
     */
    ariaLabelledby: string | null;
    /**
     * The size of the radio button
     */
    size: 'small' | 'medium' | 'large';
    constructor();
    protected _isValid(): boolean;
    protected _getValidationMessage(): string;
    protected _getNativeInput(): HTMLInputElement | undefined;
    firstUpdated(_changedProperties?: Map<any, any>): void;
    connectedCallback(): void;
    disconnectedCallback(): void;
    private _handleOutsideClick;
    private _handleClick;
    private _uncheckOtherRadiosInGroup;
    render(): import("lit-html").TemplateResult<1>;
    private get _errorIcon();
}
export {};