Font Size and UI Proportions Analysis for Your Application

Based on the screenshot of your application using Inter font, I'll provide recommendations for font sizes, proportions, and overall UI consistency to create a balanced and user-friendly experience.

Font Size Recommendations

For applications using Inter font, I recommend the following font size hierarchy:

From your interface, I can see:

• The main title "Seamless Repeating Top" appears to be around 24px (1.5rem)
• Tab navigation items ("Design", "Cost", "Pieces") are approximately 16px (1rem)
• Sidebar menu items ("Select Body", etc.) are around 14-16px (0.875-1rem)
• The "Properties" tab text is likely 14px (0.875rem)

Spacing and Proportions

For consistent spacing throughout your application:

UI Component Proportions

Based on your screenshot:

1. Header Area

   • Height: ~60px (3.75rem)
   • Title font: 24px (1.5rem)
   • Price font: 16px (1rem)
   • Button height: ~36px (2.25rem)

2. Navigation Tabs

   • Height: ~40px (2.5rem)
   • Font size: 16px (1rem)
   • Padding: 12-16px (0.75-1rem) horizontal

3. Sidebar Panels

   • Width: ~320px (20rem)
   • Panel header: 18-20px (1.125-1.25rem)
   • Menu items: 14-16px (0.875-1rem)
   • Vertical spacing between items: 16-20px (1-1.25rem)

4. Buttons

   • Primary button height: 40-44px (2.5-2.75rem)
   • Secondary/icon buttons: 32-36px (2-2.25rem)
   • Button text: 14px (0.875rem)

5. Icons

   • Navigation icons: 20-24px (1.25-1.5rem)
   • UI control icons: 16-20px (1-1.25rem)
   • Status/indicator icons: 14-16px (0.875-1rem)

Implementation Example

Here's how you could implement these recommendations using Next.js with Inter font and Tailwind CSS:

Best Practices for UI Consistency

1. Establish a Type Scale

   • Use a consistent type scale with 1.2 or 1.25 ratio between sizes
   • Limit your application to 5-7 font sizes total
   • Use the same font sizes consistently for similar elements

2. Consistent Spacing

   • Use a spacing scale based on 4px or 8px increments
   • Apply the same spacing between similar elements throughout the interface
   • Use larger spacing to separate distinct sections

3. Visual Hierarchy

   • Use font weight (not just size) to establish hierarchy
   • Inter works well with weights 400 (regular), 500 (medium), and 600 (semibold)
   • Avoid using too many font weights in the same interface

4. Element Sizing

   • Maintain consistent heights for interactive elements:

     • Primary buttons: 40-44px
     • Secondary buttons: 36-40px
     • Form inputs: 36-40px
   • Ensure touch targets are at least 44×44px for mobile interfaces

5. Color Usage

   • Limit your color palette to 2-3 primary colors plus neutrals
   • Use color consistently for similar actions and states
   • Ensure sufficient contrast between text and background (4.5:1 minimum)

6. Responsive Considerations

   • Scale font sizes slightly down on mobile (e.g., 16px → 14px)
   • Increase touch target sizes on mobile
   • Maintain consistent padding/margins across breakpoints

By implementing these recommendations, your application will maintain a professional, consistent look while providing an intuitive user experience with the Inter font family 12.

Here's a comprehensive table with all UI elements from your application and their recommended sizes:

UI Elements Size Reference Table

Font Size Hierarchy Summary

Spacing Scale Reference

Implementation Notes

1. Base Font Size: Set to 16px (1rem) for accessibility
2. Font Family: Inter with fallback to system fonts
3. Line Height: 1.5 for body text, 1.2 for headings
4. Letter Spacing: Default for most text, slight tightening (-0.025em) for large headings
5. Color Contrast: Ensure minimum 4.5:1 ratio for normal text, 3:1 for large text

This table provides a complete reference for maintaining consistency across your application while using the Inter font family effectively 12.