export interface ColorPair {
    light: string;
    dark: string;
}
export interface RelationColorPalette {
    byCategory: Readonly<Record<string, ColorPair>>;
    byType: Readonly<Record<string, ColorPair>>;
}
export interface ResolveRelationColorOptions {
    overrides?: Partial<RelationColorPalette>;
    mode?: 'light' | 'dark';
}
/**
 * One { light, dark } pair per category. Keeping these in glossarist-js
 * lets the defaults ship with the library; consumers only need to
 * customize when they want to deviate.
 */
export declare const RELATION_COLOR_DEFAULTS: RelationColorPalette;
/**
 * Resolves the color for a relationship type. Resolution order:
 *   1. overrides.byType[type]
 *   2. RELATION_COLOR_DEFAULTS.byType[type]
 *   3. overrides.byCategory[category]
 *   4. RELATION_COLOR_DEFAULTS.byCategory[category]
 *   5. null (uncategorized or unrecognized type)
 */
export declare function resolveRelationColor(type: string, options?: ResolveRelationColorOptions): string | null;
/**
 * Returns the { light, dark } pair for a category, merging overrides
 * over defaults. Useful for UIs that want to render a legend.
 */
export declare function categoryColorPair(categoryKey: string, overrides?: {
    byCategory?: Record<string, Partial<ColorPair>>;
}): ColorPair | null;
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