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Based onRefactoring UI

• Font
• Color
• Button border radius
• Language (formal, informal)

• Color palette
• Font sizes: Stick to px or rem
• White space (margin / padding): Use a relative (non linear) scale
• Shadow scale (function of z factor --height with respect to the viewer)

• Basic font choice: -apple-system, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue;
• Google fonts filter for fonts with +10 styles, sort by popularity
  • Serif:https://fonts.google.com/?stylecount=10&sort=popularity&category=Serif
  • Sans serif:https://fonts.google.com/?stylecount=10&sort=popularity&category=Sans+Serif
• Steal font choices from good designs

• Paragraph width around 20-35em (avoi too long lines)
• Line height depends on font size and paragraph width. Finding the next line when reading is easy
• Links: no need to make them all blue, bold them or underline on hover if not part of main user flow
• When to tinker with letter-spacing?
  • Narrower headlines
  • Improve all caps legibility

• Use HSL color scale
• Increase saturation for lighter and darker colors
• From dark to light, change the hue, not just the brightness and saturation
• Don't use pure grey, use a very desaturated color
• Design should work in grayscale

• Shadows: for modals, inset / outset shapes
• Leverage overlapping elements
• Avoid image clashing with overlaying text:
  • Add dark overlay
  • Lower image contrast
  • Colorize image
  • Add text shadow and lower a bit image contrast

• Do not use same versions for different scales: redraw

• Custom elements: checkboxes, radio buttons, links, quotes, icon bullet lists...
• Colorful borders in one side
• Fewer borders: separating elements is better accomplished with shadows, bg colors and spacing
• Dropdowns, tables, selection by radio buttons... shouldn't look boring. They can be beautiful
• Colored backgrounds, patterns, textures

• Design mobile first
• Large elements shrink more than small elements

• Hierarchy factors:
  • Position
  • Size
  • Weight
  • Contrast
  • Color
  • Shape
• To emphasize something, you can also de-emphasize other elements
• Balance weight of icons VS text with contrast