/**
 * Generates CSS custom property definitions for the theme system. Includes both light theme (default) and dark theme via prefers-color-scheme media query.
 * @returns CSS string with :root variables and dark mode overrides.
 */
export declare function generateThemeStyles(): string;
/**
 * Returns CSS variable references for stream health colors. Used by JavaScript to read theme-aware colors at runtime.
 * @returns Object mapping health states to CSS variable names.
 */
export declare function getStreamHealthColorVars(): Record<string, string>;
/**
 * Returns CSS variable references for log level colors. Used by JavaScript to read theme-aware colors at runtime.
 * @returns Object mapping log levels to CSS variable names.
 */
export declare function getLogLevelColorVars(): Record<string, string>;