export declare function scopeStylesToShadowRoot(styles: string): string;
export declare function appendFontToDocument(injectFontCss: boolean, styleNonce?: string | (() => string) | undefined): void;
/**
 * Creates a CSS string with styles scoped to the shadow root
 * @returns CSS string for the shadow root
 */
export declare const shadowRootCSS: () => string;
/**
 * Creates a CSSStyleSheet with styles scoped to the shadow root
 */
export declare function createShadowRootStylesheets(csstext: string): [CSSStyleSheet];
export type ColorScheme = 'light' | 'dark';
export declare function useColorScheme(explicit?: ColorScheme): ColorScheme;