things-ui-skills

Things 的 UI 设计系统。在构建受 Things 美学启发的界面时使用——浅色模式、Inter 字体、8px 网格。

SKILL.md

--- frontmatter

name: things-ui-skills
description: Things's UI design system. Use when building interfaces inspired by Things's aesthetic - light mode, Inter font, 8px grid.
license: MIT
metadata:
  author: design-skills
  version: "1.0.0"
  source: https://culturedcode.com/things

Things UI Skills

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

When to Apply

Reference these guidelines when:

•Building light-mode interfaces
•Creating Things-inspired design systems
•Implementing UIs with Inter font and 8px grid

Colors

•SHOULD use light backgrounds for primary surfaces
•MUST use #EEF2F5 as page background (surface-base)
•MUST use #729AE0 for primary actions and focus states (accent)
•SHOULD limit color palette to 5 distinct colors
•MUST maintain text contrast ratio of at least 4.5:1 for accessibility

Semantic Tokens

Token	HEX	RGB	Usage
`surface-base`	#EEF2F5	rgb(238,242,245)	Page background
`text-primary`	#729AE0	rgb(114,154,224)	Headings, body text
`text-2`	#5A5E61	rgb(90,94,97)	Additional text
`text-tertiary`	#2F343B	rgb(47,52,59)	Additional text
`accent`	#729AE0	rgb(114,154,224)	Primary actions, links, focus

Typography

•MUST use Inter as primary font family
•SHOULD use single font family for consistency
•MUST use 49px / 700 for primary headings
•MUST use 23px / 400 for body text
•SHOULD reduce font weights (currently 4 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	49px	700	#2F343B	1
`body`	Inter	23px	400	#5A5E61	1
`text-20px`	Inter	20px	500	#729AE0	1
`text-19px`	Inter	19px	semi_bold	#9298A0	1
`text-14px`	Inter	14px	400	#9499A1	1
`text-14px`	Inter	14px	400	#989CA4	1
`caption`	Inter	11px	400	#989DA4	1

Typography Reference

Font Families:

•Inter (used 7x)

Font Sizes: 11px, 14px, 19px, 20px, 23px, 49px

Spacing

•MUST use 8px grid for spacing
•SHOULD use spacing from scale: 72px
•SHOULD use 72px as default gap between elements
•NEVER use arbitrary spacing values (use design scale)
•SHOULD maintain consistent padding within containers

Borders

•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: 35px, 64px
•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: 1024px

Components

Interactive States

Focus

•MUST use 2px outline with accent color (#729AE0)
•MUST use 2px outline-offset
•NEVER remove focus indicators

Hover

•Buttons (primary): lighten background by 10%
•Buttons (secondary): use surface-raised background
•List items: use surface-raised 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