import * as React from 'react';
export type BackdropPreset = 'aurora' | 'mesh' | 'photo' | 'video' | 'grain';
export type BackdropScheme = 'light' | 'dark' | 'auto';
export type BackdropPalette = 'aurora' | 'prism' | 'ocean' | 'ember' | 'mono';
export type BackdropMotion = 'static' | 'drift';
export type BackdropToneProp = 'light' | 'dark';
export interface BackdropBase {
    /** 5-id palette; mono forces mono regardless of preset colours. */
    palette?: BackdropPalette | undefined;
    /** aurora/mesh only — declares data-ag-backdrop='light'|'dark'|'auto'. */
    scheme?: BackdropScheme | undefined;
    /**
     * Explicit media tone when sampling cannot run (SSR, CORS-less, no idle);
     * emitted as data-ag-media-tone. Named `mediaTone`, not `tone`: `tone` is in
     * contract S-30 BANNED_PROPS (REQ-SURF-11; OD-17 / C-13 fallback rename).
     */
    mediaTone?: BackdropToneProp | undefined;
    /** Grain overlay on any preset. */
    grain?: boolean | undefined;
    /** 'drift' runs one keyframe under the continuous gate. Default 'static'. */
    motion?: BackdropMotion | undefined;
    /** position: fixed; never background-attachment: fixed. */
    fixed?: boolean | undefined;
    /** Class name merged onto the root element. */
    className?: string | undefined;
    /** Content rendered inside the component. */
    children?: React.ReactNode;
}
export interface BackdropPhotoProps extends BackdropBase {
    /** Backdrop preset. */
    preset: 'photo';
    /** Image URL. */
    src: string;
    /** Responsive image candidates, in the native `srcset` format. */
    srcSet?: string | undefined;
    /** Native `sizes` attribute for `srcSet`. */
    sizes?: string | undefined;
    /** Native `crossorigin` attribute of the media element. */
    crossOrigin?: 'anonymous' | 'use-credentials' | '' | undefined;
}
export interface BackdropVideoProps extends BackdropBase {
    preset: 'video';
    src: string;
    /** Image shown before the video plays and when motion is reduced. */
    poster?: string | undefined;
    crossOrigin?: 'anonymous' | 'use-credentials' | '' | undefined;
}
export interface BackdropGraphicProps extends BackdropBase {
    preset: 'aurora' | 'mesh' | 'grain';
}
export type BackdropProps = BackdropPhotoProps | BackdropVideoProps | BackdropGraphicProps;
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