neon-ui-skills
Neon's UI design system. Use when building interfaces inspired by Neon's aesthetic - dark mode, Inter font, 4px grid.
What this skill does
# Neon UI Skills Opinionated constraints for building Neon-style interfaces with AI agents. ## When to Apply Reference these guidelines when: - Building dark-mode interfaces - Creating Neon-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`) - SHOULD reduce color palette (currently 15 colors detected) - MUST maintain text contrast ratio of at least 4.5:1 for accessibility ### Semantic Tokens | Token | HEX | RGB | Usage | |-------|-----|-----|-------| | `surface-base` | #000000 | rgb(0,0,0) | Page background | | `surface-raised` | #262626 | rgb(38,38,38) | Cards, modals, raised surfaces | | `surface-overlay` | #FEFEFE | rgb(254,254,254) | Overlays, tooltips, dropdowns | | `text-primary` | #E3E3E3 | rgb(227,227,227) | Headings, body text | | `text-2` | #ACACAC | rgb(172,172,172) | Additional text | | `text-secondary` | #6A6B6E | rgb(106,107,110) | Secondary, muted text | | `border-default` | #262626 | rgb(38,38,38) | Subtle borders, dividers | ## Typography - MUST use `Inter` as primary font family - SHOULD use single font family for consistency - MUST use `54px` / `700` for primary headings - MUST use `16px` / `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 | 54px | 700 | #E8E9E8 | 1 | | `text-26px` | Inter | 26px | semi_bold | #E3E3E3 | 1 | | `text-24px` | Inter | 24px | 500 | #2C2D2E | 1 | | `text-22px` | Inter | 22px | semi_bold | #7A7B80 | 1 | | `text-20px` | Inter | 20px | 500 | #6A6B6E | 1 | | `text-20px` | Inter | 20px | 500 | #6C6D70 | 1 | | `text-18px` | Inter | 18px | semi_bold | #74757A | 1 | | `text-17px` | Inter | 17px | 500 | #CECECE | 1 | | `body` | Inter | 16px | 500 | #707175 | 1 | | `body-secondary` | Inter | 14px | 400 | #9E9E9E | 2 | ### Typography Reference **Font Families:** - `Inter` (used 26x) **Font Sizes:** 5px, 9px, 11px, 12px, 14px, 16px, 17px, 18px, 20px, 22px, 24px, 26px, 54px ## Spacing - MUST use 4px grid for spacing - SHOULD use spacing from scale: 4px, 5px, 8px, 22px, 58px - 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: 16px, 17px, 19px, 21px - SHOULD use 21px+ radius for pill-shaped elements - MUST use 1px border width consistently - SHOULD use 19px 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:** 16px, 17px, 19px, 21px ## Layout - MUST design for 1920px base viewport width - SHOULD use consistent element widths: 8px, 50px, 26px, 28px, 37px - 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 - **Header**: height: 37px - **Main Content**: width: 1920px, height: 988px - **Main Content**: width: 1850px, height: 711px - **Main Content**: width: 1920px, height: 721px ## Components ### Buttons | Variant | Background | Text | Border | Height | Radius | |---------|------------|------|--------|--------|--------| | Ghost | transparent | #A3A3A3 | 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 `#262626` background - List items: use `#262626` 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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