/**
 * Easing function for smooth scrolling animation with quadratic acceleration and deceleration.
 *
 * @param {number} time - Current time position in the animation
 * @param {number} start - Starting value
 * @param {number} change - Change in value
 * @param {number} duration - Total duration of animation
 * @returns {number} The calculated position value for the current time
 */
export declare const easeInOutQuad: (time: number, start: number, change: number, duration: number) => number;
/**
 * Calculates the scroll position to an element, accounting for its offset parents.
 *
 * @param {string} elementId - ID of the target element to scroll to
 * @param {number} padding - Vertical padding to apply from the element (default: 0)
 * @returns {number} The vertical scroll position in pixels
 */
export declare const calculateElementScrollPosition: (elementId: string, padding?: number) => number;
/**
 * Calculates optimal animation duration based on scroll distance.
 *
 * @param {number} distance - Distance to scroll in pixels
 * @param {number} customDuration - Optional user-defined duration
 * @returns {number} The calculated duration in milliseconds
 */
export declare const calculateScrollDuration: (distance: number, customDuration?: number) => number;