Upstash UI Skills

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

When to Apply

Reference these guidelines when:

• Building light-mode interfaces

• Creating Upstash-inspired design systems

• Implementing UIs with Inter font and 4px grid

Colors

• SHOULD use light backgrounds for primary surfaces

• MUST use #000000 as page background (surface-base )

• MUST use #15B169 for primary actions and focus states (accent )

• SHOULD reduce color palette (currently 21 colors detected)

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

Semantic Tokens

Token HEX RGB Usage

surface-base

#000000 rgb(0,0,0) Page background

surface-raised

#F2F2F2 rgb(242,242,242) Cards, modals, raised surfaces

surface-overlay

#15B169 rgb(21,177,105) Overlays, tooltips, dropdowns

text-primary

#7E7D82 rgb(126,125,130) Headings, body text

text-secondary

#F7E89F rgb(247,232,159) Secondary, muted text

text-tertiary

#C04351 rgb(192,67,81) Additional text

border-default

#E6E8E7 rgb(230,232,231) Subtle borders, dividers

accent

#15B169 rgb(21,177,105) Primary actions, links, focus

destructive

#C04351 rgb(192,67,81) Error states, delete actions

success

#3FA25D rgb(63,162,93) Success states, confirmations

warning

#F7E89F rgb(247,232,159) Warning states, cautions

Typography

• MUST use Inter as primary font family

• SHOULD use single font family for consistency

• MUST use 100px / 700 for primary headings

• MUST use 25px / 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 100px 700 #3FA25D 1

heading-2

Inter 96px 700 #3CA662 1

body

Inter 25px 400 #7A8686 1

body-secondary

Inter 24px semi_bold #314440 1

body-secondary

Inter 23px 500 #2B3F3A 1

body-secondary

Inter 23px 500 #2D423D 1

body-secondary

Inter 23px 500 #487163 1

text-19px

Inter 19px 500 #818085 1

text-18px

Inter 18px 500 #7B7A7F 1

text-18px

Inter 18px semi_bold #C04351 1

Typography Reference

Font Families:

• Inter (used 38x)

Font Sizes: 10px, 11px, 12px, 13px, 14px, 15px, 16px, 17px, 18px, 19px, 23px, 24px, 25px, 96px, 100px

Spacing

• MUST use 4px grid for spacing

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

• SHOULD use 5px 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: 6px, 9px, 10px, 12px, 13px, 15px, 16px

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

• SHOULD use 15px 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: 6px, 9px, 10px, 12px, 13px, 15px, 16px

Layout

• MUST design for 1920px base viewport width

• SHOULD use consistent element widths: 20px, 24px, 18px, 172px, 199px

• 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: 1038px

• Header: height: 43px

• Main Content: width: 1855px, height: 1080px

• Main Content: width: 1920px, height: 598px

Components

• MUST use 0px height for input fields

Buttons

Variant Background Text Border Height Radius

Ghost transparent #7E7D82 none

Inputs

• Height: 0px

Interactive States

Focus

• MUST use 2px outline with accent color (#15B169 )

• MUST use 2px outline-offset

• NEVER remove focus indicators

Hover

• Buttons (primary): lighten background by 10%

• Buttons (secondary): use #F2F2F2 background

• List items: use #F2F2F2 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