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