---
name: generic-fullstack-design-system
description: Complete design system reference for full-stack applications. Covers colors, typography, spacing, component patterns (shadcn/ui), effects, GPU-accelerated animations, and WCAG AA accessibility. Use when implementing UI, choosing colors, applying spacing, creating components, or ensuring brand consistency.
---
# Fullstack Design System
Design system patterns for Next.js/NestJS full-stack applications.
**Extends:** [Generic Design System](../generic-design-system/SKILL.md) - Read base skill for color theory, typography scale, spacing system, and component states.
## Theme Configuration
### lib/theme.ts Structure
```typescript
// lib/theme.ts - Single source of truth
export const theme = {
colors: {
primary: "hsl(220, 100%, 55%)",
secondary: "hsl(180, 100%, 50%)",
accent: "hsl(270, 70%, 60%)",
},
spacing: {
xs: "4px",
sm: "8px",
md: "16px",
lg: "24px",
},
};
```
### CSS Variables (globals.css)
```css
:root {
--background: #ffffff;
--foreground: #0a0a0f;
--primary: hsl(220, 100%, 55%);
--primary-foreground: #ffffff;
}
.dark {
--background: #0a0a0f;
--foreground: #fafafa;
}
```
### Tailwind Integration
```javascript
// tailwind.config.js
module.exports = {
theme: {
extend: {
colors: {
background: "var(--background)",
foreground: "var(--foreground)",
primary: "var(--primary)",
},
},
},
};
```
## shadcn/ui Patterns
### Button Variants
```tsx
import { Button } from '@/components/ui/button';
```
### Form Components
```tsx
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
;
```
### Dialog/Modal
```tsx
import {
Dialog,
DialogContent,
DialogHeader,
DialogTitle,
} from "@/components/ui/dialog";
;
```
## Visual Effects
### Glassmorphism
```css
.glass {
background: hsl(var(--card) / 0.5);
backdrop-filter: blur(12px);
border: 1px solid hsl(var(--border) / 0.5);
}
```
### Gradient Backgrounds
```css
.bg-gradient {
background: linear-gradient(135deg, var(--primary), var(--accent));
}
```
## Dark Mode Implementation
### Next.js + next-themes
```tsx
// app/layout.tsx
import { ThemeProvider } from "next-themes";
export default function RootLayout({ children }) {
return (
{children}
);
}
```
### Theme Toggle
```tsx
import { useTheme } from "next-themes";
function ThemeToggle() {
const { theme, setTheme } = useTheme();
return (
);
}
```
## Asset Organization
```
public/
├── images/
│ ├── logo.svg
│ └── og-image.png # 1200x630, < 1MB
├── favicons/
│ ├── favicon.ico
│ ├── apple-touch-icon.png
│ └── favicon-32x32.png
└── site.webmanifest
```
## See Also
- [Generic Design System](../generic-design-system/SKILL.md) - Token organization, spacing
- [Design Patterns](../_shared/DESIGN_PATTERNS.md) - Atomic Design, component docs
- [UX Principles](../_shared/UX_PRINCIPLES.md) - Visual hierarchy