Bear UI Skills

Opinionated constraints for building Bear-style interfaces with AI agents.

When to Apply

Reference these guidelines when:

• Building light-mode interfaces

• Creating Bear-inspired design systems

• Implementing UIs with Inter font and 4px grid

Colors

• SHOULD use light backgrounds for primary surfaces

• MUST use #FFFFFF as page background (surface-base )

• SHOULD reduce color palette (currently 16 colors detected)

• MUST maintain text contrast ratio of at least 4.5:1 for accessibility

Semantic Tokens

Token HEX RGB Usage

surface-base

#FFFFFF rgb(255,255,255) Page background

surface-raised

#DDDDDE rgb(221,221,222) Cards, modals, raised surfaces

surface-overlay

#232428 rgb(35,36,40) Overlays, tooltips, dropdowns

text-primary

#8B8C90 rgb(139,140,144) Headings, body text

text-secondary

#7D7D7F rgb(125,125,127) Secondary, muted text

text-tertiary

#AB8C8E rgb(171,140,142) Additional text

border-default

#EFEFEF rgb(239,239,239) Subtle borders, dividers

Typography

• MUST use Inter as primary font family

• SHOULD use single font family for consistency

• MUST use 50px / 700 for primary headings

• MUST use 14px / 400 for body text

• SHOULD reduce font weights (currently 5 detected)

• MUST use text-balance for headings and text-pretty for body text

• SHOULD use tabular-nums for numeric data

• NEVER modify letter-spacing unless explicitly requested

Text Styles

Style Font Size Weight Color Count

heading-1

Inter 50px 700 #494949 1

text-23px

Inter 23px semi_bold #474747 1

text-23px

Inter 23px 500 #535353 1

text-22px

Inter 22px 400 #A6A6A6 1

text-20px

Inter 20px 400 #A7A7A7 1

text-17px

Inter 17px 400 #A4A4A4 1

text-17px

Inter 17px 400 #686868 1

text-16px

Inter 16px 400 #7D7D7D 1

text-16px

Inter 16px 300 #808080 1

text-16px

Inter 16px 400 #9B9B9B 1

Typography Reference

Font Families:

• Inter (used 53x)

Font Sizes: 7px, 10px, 11px, 12px, 13px, 14px, 15px, 16px, 17px, 20px, 22px, 23px, 50px

Spacing

• MUST use 4px grid for spacing

• SHOULD use spacing from scale: 1px, 2px, 3px, 4px, 5px, 6px, 7px, 8px

• SHOULD use 7px as default gap between elements

• NEVER use arbitrary spacing values (use design scale)

• SHOULD maintain consistent padding within containers

Borders

• MUST use border-radius from scale: 7px, 11px, 18px

• SHOULD limit border widths to: 1px, 2px, 6px

• SHOULD use 11px as default border-radius

• NEVER use arbitrary border-radius values (use design scale)

• SHOULD use subtle borders (1px) for element separation

Border Radius Reference

Scale: 7px, 11px, 18px

Layout

• MUST design for 1920px base viewport width

• SHOULD use consistent element widths: 16px, 178px, 14px, 177px, 10px

• SHOULD maintain text-heavy layout with clear hierarchy

• NEVER use h-screen , use h-dvh for full viewport height

• MUST respect safe-area-inset for fixed elements

• SHOULD use size-* for square elements instead of w-*

• h-*

Detected Layout Patterns

• Main Content: width: 1920px, height: 1080px

Components

Buttons

Variant Background Text Border Height Radius

Ghost transparent #7D7D7F none

Interactive States

Focus

• MUST use 2px outline with accent color (#5E6AD2 )

• MUST use 2px outline-offset

• NEVER remove focus indicators

Hover

• Buttons (primary): lighten background by 10%

• Buttons (secondary): use #DDDDDE background

• List items: use #DDDDDE background

Disabled

• MUST use opacity: 0.5

• MUST use cursor: not-allowed

Interaction

• MUST use an AlertDialog for destructive or irreversible actions

• SHOULD use structural skeletons for loading states

• MUST show errors next to where the action happens

• NEVER block paste in input or textarea elements

• MUST add an aria-label to icon-only buttons

Animation

• NEVER add animation unless it is explicitly requested

• MUST animate only compositor props (transform , opacity )

• NEVER animate layout properties (width , height , top , left , margin , padding )

• SHOULD use ease-out on entrance animations

• NEVER exceed 200ms for interaction feedback

• SHOULD respect prefers-reduced-motion

Performance

• NEVER animate large blur() or backdrop-filter surfaces

• NEVER apply will-change outside an active animation

• NEVER use useEffect for anything that can be expressed as render logic