import type { ReactNode } from "react";
/** Scrim treatment: `dim` darkens only (black 0.5, no blur); `frosted` is the heavier Modal/Drawer scrim (black 0.6 + 4px blur). */
export type BackdropVariant = "dim" | "frosted";
/** Props for Backdrop, a fading full-viewport (or container-scoped) scrim that optionally centres a loader. */
export type BackdropProps = {
    /** Mounts the scrim and fades it in; `false` fades out and unmounts. */
    open: boolean;
    /** Defaults to "dim". */
    variant?: BackdropVariant;
    /** Centres a 40px spinner in the library's `Spinner`, inheriting the scrim's foreground colour. */
    loader?: boolean;
    /** Caption under the loader; ignored unless `loader` is set. */
    text?: string;
    /** Keeps the scrim blocking every click while painting nothing. */
    invisible?: boolean;
    /** Lets clicks reach the page behind; `onClick` cannot fire while this is set. */
    allowBackgroundInteraction?: boolean;
    /** Fires on scrim clicks — the usual "click away to dismiss" hook. */
    onClick?: () => void;
    /** Fade length in ms, or separate enter/exit. Defaults to 225 in / 195 out. */
    transitionDuration?: number | {
        enter?: number;
        exit?: number;
    };
    /** Scopes the scrim to the nearest positioned ancestor instead of the viewport. */
    container?: boolean;
    /** Defaults to the 1300 modal layer full-viewport, or 10 when `container`. */
    zIndex?: number | string;
    /** Rendered centred; replaces the built-in loader when both are given. */
    children?: ReactNode;
    /** Announced to screen readers while open; defaults to "Loading" when `loader` is set. */
    ariaLabel?: string;
};