import type { ColorScheme, TypographyScale, ShapeScale, ElevationScale } from '../tokens';
import type { ComponentsConfig } from './componentsDefs';
/** Recursive deep-partial utility — allows partial theme overrides */
export type DeepPartial<T> = {
    [K in keyof T]?: T[K] extends object ? DeepPartial<T[K]> : T[K];
};
/** Color mode — 'light' or 'dark' */
export type ColorMode = 'light' | 'dark';
/**
 * Full MD3 Theme object consumed by all components via useTheme().
 *
 * Each field maps to a token category.
 */
export interface Theme {
    colorScheme: ColorScheme;
    /**
     * Dark-mode color overrides. Partial: only changed roles need to be specified.
     * When present and `mode === 'dark'`, ThemeProvider merges these over `colorScheme`.
     * When absent, `colorScheme` is used for both light and dark mode.
     * @since 012-platform-themes
     */
    darkColorScheme?: Partial<ColorScheme>;
    typography: TypographyScale;
    shape: ShapeScale;
    elevation: ElevationScale;
    mode: ColorMode;
    /** Optional global component config — set via `createTheme({ components: { ... } })`. */
    components?: ComponentsConfig;
}
/**
 * Value exposed by ThemeContext — includes the theme and a mode setter.
 */
export interface ThemeContextValue {
    theme: Theme;
    mode: ColorMode;
    setMode: (mode: ColorMode) => void;
}
/**
 * Props accepted by ThemeProvider.
 * All fields are optional: omitting them uses the default MD3 light theme.
 */
export interface ThemeProviderProps {
    /** Initial color mode. Defaults to 'light'. */
    mode?: ColorMode;
    /** Partial theme overrides merged on top of the default. */
    theme?: DeepPartial<Theme>;
    children: React.ReactNode;
}
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