import { LitElement } from 'lit';
/**
 * @tag loquix-drop-zone
 * @summary Generic drag-and-drop zone that wraps any content, shows an overlay on file drag, and emits dropped files.
 *
 * @csspart overlay - The drag overlay container.
 * @csspart icon - The overlay icon.
 * @csspart label - The overlay label text.
 *
 * @slot - Default slot for content to wrap.
 *
 * @fires loquix-drop - Fired when files are dropped. Detail: { files: File[] }
 *
 * @cssprop [--loquix-drop-zone-overlay-inset=0] - Overlay inset (CSS inset shorthand).
 * @cssprop [--loquix-drop-zone-border-radius=16px] - Overlay border radius.
 * @cssprop [--loquix-drop-zone-border-color] - Overlay dashed border colour.
 * @cssprop [--loquix-drop-zone-bg] - Overlay background colour.
 * @cssprop [--loquix-drop-zone-overlay-blur=2px] - Overlay backdrop blur.
 * @cssprop [--loquix-drop-zone-content-blur=1.5px] - Blur applied to slotted content during drag.
 * @cssprop [--loquix-drop-zone-content-opacity=0.5] - Opacity of slotted content during drag.
 * @cssprop [--loquix-drop-zone-icon-size=40px] - Overlay icon size.
 * @cssprop [--loquix-drop-zone-color] - Overlay icon and label colour.
 */
export declare class LoquixDropZone extends LitElement {
    static styles: import("lit").CSSResult[];
    private _localize;
    /** Whether drag-and-drop is disabled. */
    disabled: boolean;
    /** Overlay label text. */
    label?: string;
    /** Accepted file types (comma-separated MIME types, wildcards, or extensions). Use '*' or a wildcard MIME to allow all. */
    accept: string;
    /** Whether multiple files are allowed. */
    multiple: boolean;
    /** CSS inset value for the overlay. When set, overrides `--loquix-drop-zone-overlay-inset`. */
    overlayInset: string | undefined;
    private _dragCounter;
    /** Bound global dragend handler for cleanup. */
    private _boundGlobalDragEnd;
    connectedCallback(): void;
    disconnectedCallback(): void;
    willUpdate(changed: Map<string, unknown>): void;
    updated(changed: Map<string, unknown>): void;
    /** Check if the drag contains files (not text/urls). */
    private _hasFiles;
    private _handleDragEnter;
    private _handleDragOver;
    private _handleDragLeave;
    private _handleDrop;
    /** [Fix #2] Global dragend resets stuck drag state (e.g., drag exits viewport). */
    private _handleGlobalDragEnd;
    private _filterFiles;
    private _plusSvg;
    protected render(): import("lit").TemplateResult<1>;
}
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