import { NativeElement } from '@nonoun/native-core';
/**
 * Horizontal action bar with toolbar role, roving focus, and responsive overflow menu.
 *
 * **Variants:**
 * - *(default)* — panel background, border, border-radius, padding.
 * - `variant="plain"` — zero-chrome: transparent background, no border,
 *   no border-radius, no padding. Stable API for embedded action rows
 *   (e.g. header trailing slots, chat controls) that need toolbar layout
 *   and overflow without container chrome.
 */
export declare class NToolbar extends NativeElement {
    #private;
    static observedAttributes: string[];
    constructor();
    setup(): void;
    teardown(): void;
    attributeChangedCallback(name: string, _old: string | null, val: string | null): void;
}
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