/**
 * UI Store
 * Manages UI state: notifications, modals, themes with Zustand
 */
export type Theme = 'light' | 'dark' | 'auto';
export interface Toast {
    id: string;
    message: string;
    type: 'success' | 'error' | 'info' | 'warning';
    duration?: number;
}
export interface UIState {
    theme: Theme;
    isDarkMode: boolean;
    toasts: Toast[];
    openModals: Set<string>;
    sidebarOpen: boolean;
    isOnline: boolean;
}
export interface UIActions {
    setTheme: (theme: Theme) => void;
    toggleDarkMode: () => void;
    addToast: (toast: Omit<Toast, 'id'>) => void;
    removeToast: (id: string) => void;
    clearToasts: () => void;
    openModal: (modalId: string) => void;
    closeModal: (modalId: string) => void;
    toggleSidebar: () => void;
    setSidebarOpen: (open: boolean) => void;
    setIsOnline: (online: boolean) => void;
}
export type UIStore = UIState & UIActions;
/**
 * Create UI Store with Zustand
 * Persists theme and sidebar preference to localStorage
 */
export declare const useUIStore: import("zustand").UseBoundStore<Omit<import("zustand").StoreApi<UIStore>, "setState" | "persist"> & {
    setState(partial: UIStore | Partial<UIStore> | ((state: UIStore) => UIStore | Partial<UIStore>), replace?: false): unknown;
    setState(state: UIStore | ((state: UIStore) => UIStore), replace: true): unknown;
    persist: {
        setOptions: (options: Partial<import("zustand/middleware").PersistOptions<UIStore, {
            theme: Theme;
            sidebarOpen: boolean;
        }, unknown>>) => void;
        clearStorage: () => void;
        rehydrate: () => Promise<void> | void;
        hasHydrated: () => boolean;
        onHydrate: (fn: (state: UIStore) => void) => () => void;
        onFinishHydration: (fn: (state: UIStore) => void) => () => void;
        getOptions: () => Partial<import("zustand/middleware").PersistOptions<UIStore, {
            theme: Theme;
            sidebarOpen: boolean;
        }, unknown>>;
    };
}>;
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