/**
 * Box drawing utilities for borders, frames, modals
 */
export declare const boxChars: {
    single: {
        topLeft: string;
        topRight: string;
        bottomLeft: string;
        bottomRight: string;
        horizontal: string;
        vertical: string;
    };
    double: {
        topLeft: string;
        topRight: string;
        bottomLeft: string;
        bottomRight: string;
        horizontal: string;
        vertical: string;
    };
    rounded: {
        topLeft: string;
        topRight: string;
        bottomLeft: string;
        bottomRight: string;
        horizontal: string;
        vertical: string;
    };
    heavy: {
        topLeft: string;
        topRight: string;
        bottomLeft: string;
        bottomRight: string;
        horizontal: string;
        vertical: string;
    };
};
export type BoxStyle = keyof typeof boxChars;
export interface BoxOptions {
    x: number;
    y: number;
    width: number;
    height: number;
    style?: BoxStyle;
    title?: string;
    titleAlign?: 'left' | 'center' | 'right';
    borderColor?: string;
    titleColor?: string;
}
/**
 * Generate box lines for rendering
 */
export declare function createBox(options: BoxOptions): Array<{
    y: number;
    text: string;
    style: string;
}>;
/**
 * Center a box on screen
 */
export declare function centerBox(screenWidth: number, screenHeight: number, boxWidth: number, boxHeight: number): {
    x: number;
    y: number;
};