/**
 * Utility to inject critical MediaSFU styles that must be present for proper component rendering.
 *
 * This auto-injects the essential button container styles so consumers don't need to
 * manually import the CSS file. The full main.css is still available for optional import
 * if users want additional styling.
 */
/**
 * Injects critical MediaSFU styles into the document head.
 * This function is idempotent - calling it multiple times will only inject styles once.
 */
export declare function injectCriticalStyles(): void;
/**
 * Hook to inject critical styles on module load.
 */
export declare function useInjectCriticalStyles(): void;
export default injectCriticalStyles;
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