import React from 'react';
/**
 * Props for the PageHeader component
 *
 * @example
 * // See {@link PageHeader} for usage
 */
export interface PageHeaderProps {
    /** Main title displayed at h1 level */
    title: string;
    /** Optional subtitle displayed below the title */
    subtitle?: string;
    /** Optional action elements displayed on the right side */
    actions?: React.ReactNode;
}
/**
 * Page header component displaying a title, optional subtitle, and optional action elements.
 * Responsive layout: stacked on mobile, row layout on desktop.
 * Memoized to prevent unnecessary re-renders.
 *
 * @example
 * <PageHeader
 *   title="Dashboard"
 *   subtitle="Welcome back"
 *   actions={<Button>Add User</Button>}
 * />
 */
export declare const PageHeader: React.NamedExoticComponent<PageHeaderProps & React.RefAttributes<HTMLDivElement>>;
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