export type ThemeMode = 'light' | 'dark';
export interface ThemePreferences {
    accentColor: string;
    theme: ThemeMode;
}
export declare const DEFAULT_THEME_PREFERENCES: ThemePreferences;
/**
 * Generate the full `:root { --dt-* }` CSS text for the given theme preferences.
 *
 * This is the single source of truth for the DeskTalk color system.
 */
export declare function generateThemeCSS(preferences: ThemePreferences): string;
/**
 * Base stylesheet for AI-generated HTML.
 *
 * Provides sensible defaults for body, headings, tables, cards, buttons, and
 * code blocks — all using semantic `--dt-*` tokens. This ensures generated HTML
 * looks native to DeskTalk without the AI needing to emit its own reset/base styles.
 */
/**
 * Font face definitions for self-hosted Google Fonts.
 * Include this in your HTML <head> before theme CSS.
 */
export declare const FONT_FACES_CSS: string;
/**
 * CSS variables for font families.
 */
export declare const FONT_VARIABLES_CSS: string;
export declare const HTML_FORM_CONTROLS_STYLESHEET: string;
/**
 * Base stylesheet for AI-generated HTML.
 *
 * Provides sensible defaults for body, headings, tables, cards, buttons, and
 * code blocks — all using semantic `--dt-*` tokens. This ensures generated HTML
 * looks native to DeskTalk without the AI needing to emit its own reset/base styles.
 */
export declare const HTML_BASE_STYLESHEET: string;
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