Function getResponsiveFontSize

getResponsiveFontSize(
    typographyLevel:
        | "heading1"
        | "heading2"
        | "heading3"
        | "body"
        | "bodySmall"
        | "button"
        | "caption"
        | "micro"
        | "nano",
    isMobile: boolean,
    positionScale?: number,
): string
Get responsive font size based on typography scale

Note: This helper function uses parseInt internally for flexibility in returning pixel-suffixed strings. For performance-critical useMemo calculations, prefer using TYPOGRAPHY_NUMERIC constants directly.
Parameters
- typographyLevel:
      | "heading1"
      | "heading2"
      | "heading3"
      | "body"
      | "bodySmall"
      | "button"
      | "caption"
      | "micro"
      | "nano"
  Typography level from TYPOGRAPHY
- isMobile: boolean
  Whether mobile layout is active
- positionScale: number = 1.0
  Position scale multiplier (for 4K displays)
Returns string
Calculated font size in pixels
- Defined in types/constants/designSystem.ts:520