Lattice UI Skills

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

When to Apply

Reference these guidelines when:

• Building light-mode interfaces

• Creating Lattice-inspired design systems

• Implementing UIs with Inter font and 4px grid

Colors

• SHOULD use light backgrounds for primary surfaces

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

• MUST use #26B177 for primary actions and focus states (accent )

• SHOULD reduce color palette (currently 37 colors detected)

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

Semantic Tokens

Token HEX RGB Usage

surface-base

#FEFDFC rgb(254,253,252) Page background

surface-raised

#DDFCDA rgb(221,252,218) Cards, modals, raised surfaces

surface-overlay

#EDFAF3 rgb(237,250,243) Overlays, tooltips, dropdowns

text-primary

#6B6F6E rgb(107,111,110) Headings, body text

text-secondary

#969C9B rgb(150,156,155) Secondary, muted text

text-tertiary

#5E9892 rgb(94,152,146) Additional text

border-default

#F5F4F2 rgb(245,244,242) Subtle borders, dividers

accent

#26B177 rgb(38,177,119) Primary actions, links, focus

success

#EDFAF3 rgb(237,250,243) Success states, confirmations

warning

#FEFDFC rgb(254,253,252) Warning states, cautions

Typography

• MUST use Inter as primary font family

• SHOULD use single font family for consistency

• MUST use 71px / 700 for primary headings

• MUST use 40px / 700 for body text

• SHOULD reduce font weights (currently 6 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 71px 700 #122424 1

heading-2

Inter 71px 700 #205D42 1

text-57px

Inter 57px 700 #144F36 1

body

Inter 40px 700 #162625 1

text-21px

Inter 21px 500 #929896 1

text-20px

Inter 20px 400 #3B4342 1

text-20px

Inter 20px 400 #919593 1

text-19px

Inter 19px 500 #949A98 1

text-19px

Inter 19px 500 #9AA09F 1

text-17px

Inter 17px 400 #626968 1

Typography Reference

Font Families:

• Inter (used 76x)

Font Sizes: 3px, 4px, 5px, 6px, 7px, 8px, 9px, 10px, 11px, 12px, 13px, 14px, 15px, 16px, 17px, 19px, 20px, 21px, 40px, 57px, 71px

Spacing

• MUST use 4px grid for spacing

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

• SHOULD use 1px 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: 0px, 1px, 2px, 3px, 4px, 5px, 6px, 7px, 8px, 9px, 10px, 12px, 13px, 16px, 18px, 19px, 56px, 63px

• SHOULD use 56px+ radius for pill-shaped elements

• SHOULD limit border widths to: 1px, 2px, 3px, 4px

• SHOULD use 4px 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: 0px, 1px, 2px, 3px, 4px, 5px, 6px, 7px, 8px, 9px, 10px, 12px, 13px, 16px, 18px, 19px, 56px, 63px

Layout

• MUST design for 1920px base viewport width

• SHOULD use consistent element widths: 6px, 15px, 7px, 14px, 474px

• 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: 918px

• Header: height: 47px

Components

Buttons

Variant Background Text Border Height Radius

Ghost transparent

none

Interactive States

Focus

• MUST use 2px outline with accent color (#26B177 )

• MUST use 2px outline-offset

• NEVER remove focus indicators

Hover

• Buttons (primary): lighten background by 10%

• Buttons (secondary): use #DDFCDA background

• List items: use #DDFCDA 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