Ghost UI Skills

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

When to Apply

Reference these guidelines when:

• Building dark-mode interfaces

• Creating Ghost-inspired design systems

• Implementing UIs with Inter font and 4px grid

Colors

• MUST use dark backgrounds (lightness < 20) for primary surfaces - detected lightness: 8

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

• SHOULD reduce color palette (currently 18 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

#DAE1EC rgb(218,225,236) Cards, modals, raised surfaces

surface-overlay

#0D0E10 rgb(13,14,16) Overlays, tooltips, dropdowns

text-primary

#D8D9DC rgb(216,217,220) Headings, body text

text-secondary

#333437 rgb(51,52,55) Secondary, muted text

text-tertiary

#4C4E53 rgb(76,78,83) Additional text

border-default

#DBE0E8 rgb(219,224,232) Subtle borders, dividers

warning

#FAB429 rgb(250,180,41) Warning states, cautions

Typography

• MUST use Inter as primary font family

• SHOULD use single font family for consistency

• MUST use 73px / 700 for primary headings

• MUST use 26px / 500 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 73px 700 #1E2826 1

body

Inter 26px 500 #2F2F2F 1

body-secondary

Inter 24px semi_bold #D8D9DC 2

body-secondary

Inter 23px semi_bold #E5E6E9 1

text-18px

Inter 18px semi_bold #C2C3C4 1

text-14px

Inter 14px 400 #7B7B7B 1

text-14px

Inter 14px 400 #7C7C7C 1

text-14px

Inter 14px 400 #787878 1

text-13px

Inter 13px 400 #313234 1

text-13px

Inter 13px 400 #333438 1

Typography Reference

Font Families:

• Inter (used 42x)

Font Sizes: 9px, 10px, 11px, 12px, 13px, 14px, 18px, 23px, 24px, 26px, 73px

Spacing

• MUST use 4px grid for spacing

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

• SHOULD use 65px 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: 3px, 4px, 7px, 13px, 16px

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

• SHOULD use 13px 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: 3px, 4px, 7px, 13px, 16px

Layout

• MUST design for 1920px base viewport width

• SHOULD use consistent element widths: 260px, 10px, 8px, 13px, 35px

• 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: 1635px, height: 1080px

Components

Buttons

Variant Background Text Border Height Radius

Ghost transparent #757678 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 #DAE1EC background

• List items: use #DAE1EC 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