import { ThemeOptions } from '@mui/material/styles';
/**
 * COMPLETE MUI Theme Configuration with CSS Variables
 *
 * This file contains all theme tokens consumed by MUI components.
 * Uses MUI's CSS Variables (CssVarsProvider) for native dark mode support.
 *
 * All sections are explicitly defined even if they match MUI defaults to ensure
 * visibility and easy customization.
 *
 * Fonts are not bundled into JS. Consumers should load faces once via:
 *   import '@exotel-npm-dev/signal-design-system/index.css';
 */
export declare const FONT_OPTIONS: {
    readonly "ibm-plex-sans": {
        readonly family: "IBM Plex Sans";
    };
    readonly inter: {
        readonly family: "Inter";
    };
    /** @deprecated Use `ibm-plex-sans` instead. Kept for backward compatibility. */
    readonly "noto-sans": {
        readonly family: "Noto Sans";
    };
};
/**
 * Preset key from `FONT_OPTIONS`, or any raw CSS `font-family` name. Custom
 * families require the consumer to load their own `@font-face`.
 */
export type FontKey = keyof typeof FONT_OPTIONS | (string & {});
export declare const DEFAULT_FONT: FontKey;
export declare function createExotelTheme(fontKey?: FontKey, themeOverrides?: ThemeOptions): Omit<import('@mui/material').Theme, "applyStyles"> & import('@mui/material').CssVarsTheme;
export declare const exotelTheme: Omit<import('@mui/material').Theme, "applyStyles"> & import('@mui/material').CssVarsTheme;