Typography Scale Calculator

Create a typography scale system for this project:

**Project Parameters:**
- Project Type: ${{PROJECT_TYPE}}
- Base Font Size: ${{BASE_FONT_SIZE}}
- Primary Reading Device: ${{PRIMARY_DEVICE}}
- Content Type: ${{CONTENT_TYPE}}

**Design Preferences:**
- Scale Ratio Preference: ${{SCALE_RATIO}}
- Heading Levels Needed: ${{HEADING_LEVELS}}
- Additional Sizes: ${{ADDITIONAL_SIZES}}

Please calculate:

1. **Modular Scale Selection**
   - Minor Second (1.067)
   - Major Second (1.125)
   - Minor Third (1.200)
   - Major Third (1.250)
   - Perfect Fourth (1.333)
   - Augmented Fourth (1.414)
   - Perfect Fifth (1.500)
   - Golden Ratio (1.618)
   - Recommended scale with rationale

2. **Desktop Scale (px, rem, em)**
   - Display/Hero: Size
   - H1: Size
   - H2: Size
   - H3: Size
   - H4: Size
   - H5: Size
   - H6: Size
   - Body Large: Size
   - Body: Size
   - Body Small: Size
   - Caption: Size
   - Overline: Size

3. **Tablet Scale**
   - Adjusted sizes for tablet
   - Breakpoint recommendation
   - Scale ratio adjustment if needed

4. **Mobile Scale**
   - Adjusted sizes for mobile
   - Minimum readable sizes
   - Touch-friendly considerations

5. **Line Height Calculations**
   - Headings line height
   - Body text line height
   - Small text line height
   - Ratio recommendations

6. **Letter Spacing**
   - Display text tracking
   - Heading tracking
   - Body tracking
   - All caps tracking
   - Small text tracking

7. **Vertical Rhythm**
   - Baseline grid value
   - Paragraph spacing
   - Section spacing
   - Component spacing

8. **CSS Custom Properties**
   ```css
   :root {
     /* Font sizes */
     --font-size-base: [value];
     --font-size-scale: [ratio];
     /* Generated scale */
   }
   ```

9. **Responsive Implementation**
   - Fluid typography formula
   - Clamp() values
   - Media query breakpoints

10. **Practical Application**
    - When to use each size
    - Combining sizes
    - Edge cases
    - Accessibility minimums

Provide calculated values with CSS code ready for implementation.