/**
 * Border and outline design tokens for BeatUI.
 *
 * Defines scales for border widths and outline widths used consistently
 * across all interactive components.
 *
 * @module
 */
/**
 * Border width scale mapping size names to CSS values.
 *
 * | Name    | Value  | Usage                                |
 * |---------|--------|--------------------------------------|
 * | none    | 0      | No border                            |
 * | thin    | 1px    | Subtle separators, dividers          |
 * | default | 1.5px  | Buttons, inputs, badges              |
 * | medium  | 2px    | Focus rings, emphasis, tabs          |
 * | thick   | 3px    | Modals, heavy emphasis               |
 */
export declare const borderWidth: {
    readonly none: "0";
    readonly thin: "1px";
    readonly default: "1.5px";
    readonly medium: "2px";
    readonly thick: "3px";
};
/**
 * Union type of all available border width names.
 */
export type BorderWidthName = keyof typeof borderWidth;
/**
 * Returns the CSS custom property name for a border width.
 *
 * @param size - The border width name
 * @returns The CSS variable name (e.g., `'--border-width-default'`)
 *
 * @example
 * ```ts
 * getBorderWidthVarName('default') // '--border-width-default'
 * ```
 */
export declare function getBorderWidthVarName(size: BorderWidthName): string;
/**
 * Returns a CSS `var()` expression referencing the border width custom property.
 *
 * @param size - The border width name
 * @returns A CSS `var()` string (e.g., `'var(--border-width-default)'`)
 *
 * @example
 * ```ts
 * getBorderWidthVar('default') // 'var(--border-width-default)'
 * ```
 */
export declare function getBorderWidthVar(size: BorderWidthName): string;
/**
 * Generates CSS custom property declarations for all border width tokens.
 *
 * @returns A record mapping CSS variable names to their border width values
 *
 * @example
 * ```ts
 * const vars = generateBorderWidthVariables()
 * // vars['--border-width-default'] === '1.5px'
 * ```
 */
export declare function generateBorderWidthVariables(): Record<string, string>;
/**
 * Outline width scale mapping size names to CSS values.
 *
 * | Name    | Value | Usage                            |
 * |---------|-------|----------------------------------|
 * | none    | 0     | No outline                       |
 * | default | 1px   | Default input outline            |
 * | focus   | 2px   | Focus state, error state         |
 */
export declare const outlineWidth: {
    readonly none: "0";
    readonly default: "1px";
    readonly focus: "2px";
};
/**
 * Union type of all available outline width names.
 */
export type OutlineWidthName = keyof typeof outlineWidth;
/**
 * Returns the CSS custom property name for an outline width.
 *
 * @param size - The outline width name
 * @returns The CSS variable name (e.g., `'--outline-width-focus'`)
 */
export declare function getOutlineWidthVarName(size: OutlineWidthName): string;
/**
 * Returns a CSS `var()` expression referencing the outline width custom property.
 *
 * @param size - The outline width name
 * @returns A CSS `var()` string (e.g., `'var(--outline-width-focus)'`)
 */
export declare function getOutlineWidthVar(size: OutlineWidthName): string;
/**
 * Generates CSS custom property declarations for all outline width tokens.
 *
 * @returns A record mapping CSS variable names to their outline width values
 */
export declare function generateOutlineWidthVariables(): Record<string, string>;