AgentSkillsCN

planetscale-ui-skills

Planetscale 的 UI 设计系统。在构建受 Planetscale 美学启发的界面时使用——深色模式、Inter 字体、4px 网格。

SKILL.md
--- frontmatter
name: planetscale-ui-skills
description: Planetscale's UI design system. Use when building interfaces inspired by Planetscale's aesthetic - dark mode, Inter font, 4px grid.
license: MIT
metadata:
  author: design-skills
  version: "1.0.0"
  source: https://planetscale.com

Planetscale UI Skills

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

When to Apply

Reference these guidelines when:

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

Colors

  • •MUST use dark backgrounds (lightness < 20) for primary surfaces - detected lightness: 0
  • •MUST use #000000 as page background (surface-base)
  • •MUST use #7967D3 for primary actions and focus states (accent)
  • •SHOULD reduce color palette (currently 23 colors detected)
  • •MUST maintain text contrast ratio of at least 4.5:1 for accessibility

Semantic Tokens

TokenHEXRGBUsage
surface-base#000000rgb(0,0,0)Page background
surface-raised#F8F8F9rgb(248,248,249)Cards, modals, raised surfaces
surface-overlay#EC4011rgb(236,64,17)Overlays, tooltips, dropdowns
text-primary#202020rgb(32,32,32)Headings, body text
text-secondary#787878rgb(120,120,120)Secondary, muted text
text-tertiary#54565Crgb(84,86,92)Additional text
border-default#D44927rgb(212,73,39)Subtle borders, dividers
destructive#EC4011rgb(236,64,17)Error states, delete actions
success#41D731rgb(65,215,49)Success states, confirmations
accent#7967D3rgb(121,103,211)Primary actions, links, focus

Typography

  • •MUST use Inter as primary font family
  • •SHOULD use single font family for consistency
  • •MUST use 51px / 700 for primary headings
  • •MUST use 17px / 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

StyleFontSizeWeightColorCount
heading-1Inter51px700#DF5C2E1
text-44pxInter44px700#36F91F1
text-40pxInter40pxextra_bold#2020201
text-39pxInter39pxextra_bold#1A1A1A1
text-38pxInter38px700#1E1E1E1
text-35pxInter35pxextra_bold#1D1D1D1
text-34pxInter34px700#1A1A1A1
text-31pxInter31px700#1414141
text-30pxInter30px700#1A1A1A1
text-30pxInter30px400#D76B601

Typography Reference

Font Families:

  • •Inter (used 55x)

Font Sizes: 11px, 12px, 13px, 14px, 15px, 16px, 17px, 18px, 21px, 22px, 23px, 24px, 25px, 26px, 29px, 30px, 31px, 34px, 35px, 38px, 39px, 40px, 44px, 51px

Spacing

  • •MUST use 4px grid for spacing
  • •SHOULD use spacing from scale: 3px, 4px, 5px, 6px, 7px, 25px, 28px, 32px
  • •SHOULD use 38px 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: 220px, 221px, 2px, 30px, 1px
  • •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: 1041px
  • •Main Content: width: 1114px, height: 664px
  • •Main Content: width: 1104px, height: 667px
  • •Header: height: 39px

Components

Buttons

VariantBackgroundTextBorderHeightRadius
Ghosttransparent#F0B095none--

Interactive States

Focus

  • •MUST use 2px outline with accent color (#7967D3)
  • •MUST use 2px outline-offset
  • •NEVER remove focus indicators

Hover

  • •Buttons (primary): lighten background by 10%
  • •Buttons (secondary): use #F8F8F9 background
  • •List items: use #F8F8F9 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