loom-ui-skills
Loom's UI design system. Use when building interfaces inspired by Loom's aesthetic - light mode, Inter font, 4px grid.
What this skill does
# Loom UI Skills Opinionated constraints for building Loom-style interfaces with AI agents. ## When to Apply Reference these guidelines when: - Building light-mode interfaces - Creating Loom-inspired design systems - Implementing UIs with Inter font and 4px grid ## Colors - SHOULD use light backgrounds for primary surfaces - MUST use `#E4EDFE` as page background (`surface-base`) - MUST use `#2256C7` for primary actions and focus states (`accent`) - SHOULD reduce color palette (currently 14 colors detected) - MUST maintain text contrast ratio of at least 4.5:1 for accessibility ### Semantic Tokens | Token | HEX | RGB | Usage | |-------|-----|-----|-------| | `surface-base` | #E4EDFE | rgb(228,237,254) | Page background | | `surface-raised` | #FFFFFF | rgb(255,255,255) | Cards, modals, raised surfaces | | `surface-overlay` | #171718 | rgb(23,23,24) | Overlays, tooltips, dropdowns | | `text-primary` | #B6B6B7 | rgb(182,182,183) | Headings, body text | | `text-2` | #363B43 | rgb(54,59,67) | Additional text | | `text-secondary` | #B1CFEF | rgb(177,207,239) | Secondary, muted text | | `border-default` | #E8EEF8 | rgb(232,238,248) | Subtle borders, dividers | | `accent` | #2256C7 | rgb(34,86,199) | Primary actions, links, focus | ## Typography - MUST use `Inter` as primary font family - SHOULD use single font family for consistency - MUST use `54px` / `700` for primary headings - MUST use `25px` / `500` for body text - MUST limit font weights to: medium, bold, regular - 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 | 54px | 700 | #1D1D1F | 1 | | `body` | Inter | 25px | 500 | #3C3C3C | 1 | | `text-20px` | Inter | 20px | 500 | #333433 | 1 | | `text-16px` | Inter | 16px | 400 | #656565 | 1 | | `text-16px` | Inter | 16px | 400 | #626262 | 1 | | `text-16px` | Inter | 16px | 400 | #676767 | 1 | | `text-15px` | Inter | 15px | 400 | #666666 | 1 | | `caption` | Inter | 13px | 500 | #B6B6B7 | 1 | | `label` | Inter | 13px | 400 | #4A505C | 1 | | `label` | Inter | 12px | 400 | #B1CFEF | 1 | ### Typography Reference **Font Families:** - `Inter` (used 15x) **Font Sizes:** 11px, 12px, 13px, 15px, 16px, 20px, 25px, 54px ## Spacing - MUST use 4px grid for spacing - SHOULD use spacing from scale: 4px, 5px, 6px, 7px, 9px, 10px, 13px, 14px - 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: 4px, 15px, 18px, 22px, 26px, 28px - SHOULD use 22px+ radius for pill-shaped elements - SHOULD limit border widths to: 1px, 2px - SHOULD use 28px 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:** 4px, 15px, 18px, 22px, 26px, 28px ## Layout - MUST design for 1920px base viewport width - SHOULD use consistent element widths: 137px, 144px, 6px - 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 ## Components ### Buttons | Variant | Background | Text | Border | Height | Radius | |---------|------------|------|--------|--------|--------| | Ghost | transparent | #B6B6B7 | none | - | - | ## Interactive States ### Focus - MUST use `2px` outline with accent color (`#2256C7`) - MUST use `2px` outline-offset - NEVER remove focus indicators ### Hover - Buttons (primary): lighten background by 10% - Buttons (secondary): use `#FFFFFF` background - List items: use `#FFFFFF` 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
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