arc-ui-skillslisted

# Arc UI Skills Opinionated constraints for building Arc-style interfaces with AI agents. ## When to Apply Reference these guidelines when: - Building light-mode interfaces - Creating Arc-inspired design systems - Implementing UIs with Inter font and 4px grid ## Colors - SHOULD use light backgrounds for primary surfaces - MUST use `#E4E4E4` as page background (`surface-base`) - MUST use `#6FADE2` for primary actions and focus states (`accent`) - SHOULD reduce color palette (currently 26 colors detected) - MUST maintain text contrast ratio of at least 4.5:1 for accessibility ### Semantic Tokens | Token | HEX | RGB | Usage | |-------|-----|-----|-------| | `surface-base` | #E4E4E4 | rgb(228,228,228) | Page background | | `surface-raised` | #1B00B5 | rgb(27,0,181) | Cards, modals, raised surfaces | | `surface-overlay` | #FEFEFD | rgb(254,254,253) | Overlays, tooltips, dropdowns | | `text-primary` | #BFAFEA | rgb(191,175,234) | Headings, body text | | `text-secondary` | #513EA3 | rgb(81,62,163) | Secondary, muted text | | `text-tertiary` | #E0DCEA | rgb(224,220,234) | Additional text | | `border-default` | #1902BE | rgb(25,2,190) | Subtle borders, dividers | | `accent` | #6FADE2 | rgb(111,173,226) | Primary actions, links, focus | | `warning` | #FEFEFD | rgb(254,254,253) | Warning states, cautions | ## Typography - MUST use `Inter` as primary font family - SHOULD use single font family for consistency - MUST use `53px` / `700` for primary headings - MUST use `22px` / `50