/**
 * Injects DaisyUI/Tailwind CSS into a shadow root.
 * Note: CSS variables defined at :root automatically inherit into shadow DOM,
 * so we only need to inject the class rules and structural CSS.
 *
 * For theming to work properly in shadow DOM:
 * - CSS variables (--modus-wc-*) inherit from the document :root
 * - Theme changes via data-theme attribute work automatically globally
 *
 * Creates a single shared CSSStyleSheet that is reused across all shadow roots.
 *
 * @param includeComponentStyles When true (used by container components), also injects
 * compiled per-component SCSS so slotted children render correctly inside consumer shadow roots.
 */
export declare function ensureDaisyUIInShadow(root: Document | ShadowRoot, includeComponentStyles?: boolean): Promise<void>;