Codeium UI Skills

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

When to Apply

Reference these guidelines when:

• Building dark-mode interfaces
• Creating Codeium-inspired design systems
• Implementing UIs with Inter font and 4px grid

Colors

• MUST use dark backgrounds (lightness < 20) for primary surfaces - detected lightness: 17
• MUST use #152443 as page background (surface-base)
• MUST use #32E5AD for primary actions and focus states (accent)
• SHOULD limit color palette to 7 distinct colors
• MUST maintain text contrast ratio of at least 4.5:1 for accessibility

Semantic Tokens

Token	HEX	RGB	Usage
surface-base	#152443	rgb(21,36,67)	Page background
surface-raised	#32E5AD	rgb(50,229,173)	Cards, modals, raised surfaces
text-primary	#ACB9C8	rgb(172,185,200)	Headings, body text
text-secondary	#136045	rgb(19,96,69)	Secondary, muted text
text-tertiary	#CED5DB	rgb(206,213,219)	Additional text
border-default	#253453	rgb(37,52,83)	Subtle borders, dividers
accent	#32E5AD	rgb(50,229,173)	Primary actions, links, focus

Typography

• MUST use Inter as primary font family
• SHOULD use single font family for consistency
• MUST use 77px / 700 for primary headings
• MUST use 20px / 400 for body text
• MUST limit font weights to: regular, bold
• 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	77px	700	#CED5DB	1
body	Inter	20px	400	#ACB9C8	1
body-secondary	Inter	20px	400	#B4BEC9	1
text-17px	Inter	17px	400	#B2BDCB	1
text-14px	Inter	14px	400	#136045	1
text-13px	Inter	13px	400	#A0ACBE	1
caption	Inter	10px	400	#146F50	1
label	Inter	10px	400	#A7B3C2	1
label	Inter	10px	400	#A1ADBD	1
label	Inter	10px	400	#A9B6C4	1

Typography Reference

Font Families:

• Inter (used 13x)

Font Sizes: 10px, 13px, 14px, 17px, 20px, 77px

Spacing

• MUST use 4px grid for spacing
• SHOULD use spacing from scale: 5px, 6px, 16px, 29px, 42px
• SHOULD use 6px as default gap between elements
• NEVER use arbitrary spacing values (use design scale)
• SHOULD maintain consistent padding within containers

Borders

• MUST use 1px border width consistently
• NEVER use arbitrary border-radius values (use design scale)
• SHOULD use subtle borders (1px) for element separation

Layout

• MUST design for 1920px base viewport width
• SHOULD use consistent element widths: 6px, 157px, 74px
• 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
• Main Content: width: 1920px, height: 802px
• Header: height: 84px

Components

Buttons

Variant	Background	Text	Border	Height	Radius
Ghost	transparent	#B2BDCB	none	-	-

Interactive States

Focus

• MUST use 2px outline with accent color (#32E5AD)
• MUST use 2px outline-offset
• NEVER remove focus indicators

Hover

• Buttons (primary): lighten background by 10%
• Buttons (secondary): use #32E5AD background
• List items: use #32E5AD 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