import { ClassValue } from 'clsx';
type PortalContainerOptions = {
    id?: string;
    className?: string;
    style?: Partial<CSSStyleDeclaration>;
};
export declare function cn(...inputs: ClassValue[]): string;
export declare const isStorybookTestEnv: boolean;
export declare function getInitials(name: string): string;
/**
 * Focus rings for non-form interactive elements (buttons, etc.).
 * These provide only the shadow-based focus ring without background/border changes.
 */
export declare const focusRing: "focus-visible:shadow-focus-ring outline-none";
export declare const focusRingDestructive: "focus-visible:shadow-focus-ring-destructive outline-none";
/**
 * Reusable form element state Tailwind classes.
 * Import these to maintain consistent styling across all form components.
 */
export declare const formElementBase: "border border-transparent rounded-lg bg-muted-background py-1.75 pl-2 pr-1 text-sm leading-5 tracking-tight text-muted-foreground placeholder:text-muted-foreground";
export declare const hoverState: "hover:bg-accent-background hover:border hover:border-border-emphasized";
export declare const filledState: "[&:not(:placeholder-shown):not(:focus)]:bg-muted-background [&:not(:placeholder-shown)]:text-foreground";
export declare const focusState: "focus-visible:shadow-focus-ring focus-visible:bg-background focus-visible:border-transparent focus-visible:text-foreground outline-none";
export declare const invalidState: "aria-invalid:border-destructive-foreground aria-invalid:shadow-focus-ring-destructive aria-invalid:border-transparent aria-invalid:text-foreground aria-invalid:focus-visible:shadow-focus-ring aria-invalid:focus-visible:bg-background aria-invalid:focus-visible:border-transparent aria-invalid:focus-visible:text-foreground outline-none";
export declare const disabledState: "disabled:bg-disabled-background disabled:border-transparent disabled:text-disabled-foreground disabled:placeholder:text-disabled-foreground disabled:pointer-events-none disabled:cursor-not-allowed";
export declare const readOnlyState: "read-only:border-transparent read-only:text-muted-foreground read-only:cursor-default read-only:hover:border-transparent read-only:focus-visible:shadow-none read-only:focus-visible:border-transparent read-only:focus-visible:bg-muted-background [&:read-only:not(:placeholder-shown)]:text-muted-foreground";
/**
 * Reusable styles for selection-control rows (radio group items, checkbox items, etc.).
 * These provide the shared layout, card variant, label, and description classes
 * without baking in a parent group name (ancestor `group-has-[...]/<name>` selectors
 * must stay inline in each consumer so they reference that component's own `group/<name>`).
 */
export declare const selectionItemBase: "grid max-w-150 cursor-pointer grid-cols-[auto_1fr] items-start gap-x-2 gap-y-1 has-[[data-disabled]]:cursor-not-allowed";
export declare const selectionItemDefault: "min-h-9 py-2";
export declare const selectionItemCard: string;
export declare const selectionItemLabel: "col-start-2 text-sm font-medium leading-4.5 tracking-normal text-secondary-foreground dark:text-secondary-foreground";
export declare const selectionItemDescription: "col-start-2 text-xs font-normal leading-3.5 tracking-tightest text-muted-foreground";
export declare function slugToPascalCase(slug: string): string;
/**
 * Safely extracts hostname from a URL string.
 * Returns the hostname if valid, otherwise returns the original string or "unknown".
 *
 * @param url - URL string to extract hostname from (optional)
 * @returns The hostname, original string, or "unknown" if url is undefined
 */
export declare function getHostname(url: string | undefined): string;
/**
 * Gets or creates the portal container for portalled UI components.
 * Container is created in document.body to avoid positioning issues
 * from the shell app's container query context.
 * The result is cached to avoid side effects on subsequent calls during React renders.
 */
export declare const getPortalContainer: (options?: PortalContainerOptions) => HTMLElement | undefined;
export {};