/**
 * Fluent Grow Pseudo-Elements System
 * ----------------------------------
 * Provides utilities for styling pseudo-elements (::before, ::after) with
 * comprehensive positioning, styling and responsive support.
 */
import type { CSSProperties } from '../utils/css-engine';
export interface PseudoElementConfig extends CSSProperties {
    content?: string;
    position?: 'absolute' | 'relative' | 'fixed' | 'sticky';
    top?: string | number;
    right?: string | number;
    bottom?: string | number;
    left?: string | number;
    width?: string | number;
    height?: string | number;
    background?: string;
    border?: string;
    borderRadius?: string | number;
    opacity?: number;
    transform?: string;
    zIndex?: number;
}
export declare class PseudoElements {
    private element;
    private cleanupFns;
    private styleSheet?;
    private pseudoRules;
    private elementClass;
    constructor(element: HTMLElement);
    /**
     * Styles the ::before pseudo-element
     */
    before(config: PseudoElementConfig): this;
    /**
     * Styles the ::after pseudo-element
     */
    after(config: PseudoElementConfig): this;
    /**
     * Cleanup method to remove stylesheets and observers
     */
    destroy(): void;
    private addPseudoElement;
    private initializeStyleSheet;
    private addCSSRule;
    private fallbackToStyleElement;
    private generateUniqueClass;
    private normalizeValue;
}
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