/**
 * Creates a DOM element with attributes.
 * - 'textContent' is always safe (no XSS)
 * - 'innerHTML' is ONLY used for trusted SVG icons (never user input)
 */
export declare function el<K extends keyof HTMLElementTagNameMap>(tag: K, attrs?: Record<string, string>, children?: (HTMLElement | string)[]): HTMLElementTagNameMap[K];
/**
 * Applies CSS custom properties to an element, sanitizing values.
 */
export declare function applyThemeVars(element: HTMLElement, vars: Record<string, string>): void;
/**
 * Creates a focus trap within a container element.
 * Returns a cleanup function to remove the trap.
 */
export declare function createFocusTrap(container: HTMLElement): () => void;
/**
 * Locks body scroll without layout shift.
 * Accounts for scrollbar width to prevent content jumping.
 * Supports nested lock/unlock (reference counted).
 */
export declare function lockScroll(): void;
/**
 * Unlocks body scroll, restoring previous state.
 */
export declare function unlockScroll(): void;
export declare function uid(prefix?: string): string;