import { ButtonHTMLAttributes, FC, ReactNode, Ref } from 'react';
export interface ButtonBaseProps extends ButtonHTMLAttributes<HTMLButtonElement> {
    /**
     * Defines the visual style of the button, affecting color schemes and emphasis.
     */
    variant?: 'primary' | 'secondary';
    /**
     * Adjusts the button's structural appearance (background, border, etc.).
     */
    appearance?: 'fill' | 'outline' | 'ghost' | 'transparent';
    /**
     * Disables the button when true.
     * Prevents user interaction and applies a visually disabled state.
     */
    disabled?: boolean;
    /**
     * Optional custom CSS class for the button element.
     * Useful for design system overrides or scoped styles.
     */
    className?: string;
    /**
     * When true, renders the button as a child component using `Slot` (e.g., from Radix UI).
     * Enables polymorphic rendering — useful for making the button act as a link or custom tag.
     */
    asChild?: boolean;
    /**
     * Content of the button — text, icon, or any React node.
     */
    children?: ReactNode;
    /**
     * Ref forwarded to the native `<button>` element.
     * Allows direct DOM access for focus management or measuring.
     */
    ref?: Ref<HTMLButtonElement>;
}
export declare const ButtonBase: FC<ButtonBaseProps>;