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frontend-ui-dark-ts skill

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This skill helps you build polished dark-themed dashboards in React with Tailwind, glassmorphism, and Framer Motion for data-rich interfaces.

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---
name: frontend-ui-dark-ts
description: Build dark-themed React applications using Tailwind CSS with custom theming, glassmorphism effects, and Framer Motion animations. Use when creating dashboards, admin panels, or data-rich interfaces with a refined dark aesthetic.
---

# Frontend UI Dark Theme (TypeScript)

A modern dark-themed React UI system using **Tailwind CSS** and **Framer Motion**. Designed for dashboards, admin panels, and data-rich applications with glassmorphism effects and tasteful animations.

## Stack

| Package | Version | Purpose |
|---------|---------|---------|
| `react` | ^18.x | UI framework |
| `react-dom` | ^18.x | DOM rendering |
| `react-router-dom` | ^6.x | Routing |
| `framer-motion` | ^11.x | Animations |
| `clsx` | ^2.x | Class merging |
| `tailwindcss` | ^3.x | Styling |
| `vite` | ^5.x | Build tool |
| `typescript` | ^5.x | Type safety |

## Quick Start

```bash
npm create vite@latest my-app -- --template react-ts
cd my-app
npm install framer-motion clsx react-router-dom
npm install -D tailwindcss postcss autoprefixer
npx tailwindcss init -p
```

## Project Structure

```
public/
├── favicon.ico                    # Classic favicon (32x32)
├── favicon.svg                    # Modern SVG favicon
├── apple-touch-icon.png           # iOS home screen (180x180)
├── og-image.png                   # Social sharing image (1200x630)
└── site.webmanifest               # PWA manifest
src/
├── assets/
│   └── fonts/
│       ├── Segoe UI.ttf
│       ├── Segoe UI Bold.ttf
│       ├── Segoe UI Italic.ttf
│       └── Segoe UI Bold Italic.ttf
├── components/
│   ├── ui/
│   │   ├── Button.tsx
│   │   ├── Card.tsx
│   │   ├── Input.tsx
│   │   ├── Badge.tsx
│   │   ├── Dialog.tsx
│   │   ├── Tabs.tsx
│   │   └── index.ts
│   └── layout/
│       ├── AppShell.tsx
│       ├── Sidebar.tsx
│       └── PageHeader.tsx
├── styles/
│   └── globals.css
├── App.tsx
└── main.tsx
```

## Configuration

### index.html

The HTML entry point with mobile viewport, favicons, and social meta tags:

```html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
    
    <!-- Favicons -->
    <link rel="icon" href="/favicon.ico" sizes="32x32" />
    <link rel="icon" href="/favicon.svg" type="image/svg+xml" />
    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
    <link rel="manifest" href="/site.webmanifest" />
    
    <!-- Theme color for mobile browser chrome -->
    <meta name="theme-color" content="#18181B" />
    
    <!-- Open Graph -->
    <meta property="og:type" content="website" />
    <meta property="og:title" content="App Name" />
    <meta property="og:description" content="App description" />
    <meta property="og:image" content="https://example.com/og-image.png" />
    <meta property="og:url" content="https://example.com" />
    
    <!-- Twitter Card -->
    <meta name="twitter:card" content="summary_large_image" />
    <meta name="twitter:title" content="App Name" />
    <meta name="twitter:description" content="App description" />
    <meta name="twitter:image" content="https://example.com/og-image.png" />
    
    <title>App Name</title>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx"></script>
  </body>
</html>
```

### public/site.webmanifest

PWA manifest for installable web apps:

```json
{
  "name": "App Name",
  "short_name": "App",
  "icons": [
    { "src": "/favicon.ico", "sizes": "32x32", "type": "image/x-icon" },
    { "src": "/apple-touch-icon.png", "sizes": "180x180", "type": "image/png" }
  ],
  "theme_color": "#18181B",
  "background_color": "#18181B",
  "display": "standalone"
}
```

### tailwind.config.js

```js
/** @type {import('tailwindcss').Config} */
export default {
  content: ['./index.html', './src/**/*.{js,ts,jsx,tsx}'],
  theme: {
    extend: {
      fontFamily: {
        sans: ['Segoe UI', 'system-ui', 'sans-serif'],
      },
      colors: {
        brand: {
          DEFAULT: '#8251EE',
          hover: '#9366F5',
          light: '#A37EF5',
          subtle: 'rgba(130, 81, 238, 0.15)',
        },
        neutral: {
          bg1: 'hsl(240, 6%, 10%)',
          bg2: 'hsl(240, 5%, 12%)',
          bg3: 'hsl(240, 5%, 14%)',
          bg4: 'hsl(240, 4%, 18%)',
          bg5: 'hsl(240, 4%, 22%)',
          bg6: 'hsl(240, 4%, 26%)',
        },
        text: {
          primary: '#FFFFFF',
          secondary: '#A1A1AA',
          muted: '#71717A',
        },
        border: {
          subtle: 'hsla(0, 0%, 100%, 0.08)',
          DEFAULT: 'hsla(0, 0%, 100%, 0.12)',
          strong: 'hsla(0, 0%, 100%, 0.20)',
        },
        status: {
          success: '#10B981',
          warning: '#F59E0B',
          error: '#EF4444',
          info: '#3B82F6',
        },
        dataviz: {
          purple: '#8251EE',
          blue: '#3B82F6',
          green: '#10B981',
          yellow: '#F59E0B',
          red: '#EF4444',
          pink: '#EC4899',
          cyan: '#06B6D4',
        },
      },
      borderRadius: {
        DEFAULT: '0.5rem',
        lg: '0.75rem',
        xl: '1rem',
      },
      boxShadow: {
        glow: '0 0 20px rgba(130, 81, 238, 0.3)',
        'glow-lg': '0 0 40px rgba(130, 81, 238, 0.4)',
      },
      backdropBlur: {
        xs: '2px',
      },
      animation: {
        'fade-in': 'fadeIn 0.3s ease-out',
        'slide-up': 'slideUp 0.3s ease-out',
        'slide-down': 'slideDown 0.3s ease-out',
      },
      keyframes: {
        fadeIn: {
          '0%': { opacity: '0' },
          '100%': { opacity: '1' },
        },
        slideUp: {
          '0%': { opacity: '0', transform: 'translateY(10px)' },
          '100%': { opacity: '1', transform: 'translateY(0)' },
        },
        slideDown: {
          '0%': { opacity: '0', transform: 'translateY(-10px)' },
          '100%': { opacity: '1', transform: 'translateY(0)' },
        },
      },
      // Mobile: safe area insets for notched devices
      spacing: {
        'safe-top': 'env(safe-area-inset-top)',
        'safe-bottom': 'env(safe-area-inset-bottom)',
        'safe-left': 'env(safe-area-inset-left)',
        'safe-right': 'env(safe-area-inset-right)',
      },
      // Mobile: minimum touch target sizes (44px per Apple/Google guidelines)
      minHeight: {
        'touch': '44px',
      },
      minWidth: {
        'touch': '44px',
      },
    },
  },
  plugins: [],
};
```

### postcss.config.js

```js
export default {
  plugins: {
    tailwindcss: {},
    autoprefixer: {},
  },
};
```

### src/styles/globals.css

```css
@tailwind base;
@tailwind components;
@tailwind utilities;

/* Font faces */
@font-face {
  font-family: 'Segoe UI';
  src: url('../assets/fonts/Segoe UI.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Segoe UI';
  src: url('../assets/fonts/Segoe UI Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Segoe UI';
  src: url('../assets/fonts/Segoe UI Italic.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Segoe UI';
  src: url('../assets/fonts/Segoe UI Bold Italic.ttf') format('truetype');
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

/* CSS Custom Properties */
:root {
  /* Brand colors */
  --color-brand: #8251EE;
  --color-brand-hover: #9366F5;
  --color-brand-light: #A37EF5;
  --color-brand-subtle: rgba(130, 81, 238, 0.15);

  /* Neutral backgrounds */
  --color-bg-1: hsl(240, 6%, 10%);
  --color-bg-2: hsl(240, 5%, 12%);
  --color-bg-3: hsl(240, 5%, 14%);
  --color-bg-4: hsl(240, 4%, 18%);
  --color-bg-5: hsl(240, 4%, 22%);
  --color-bg-6: hsl(240, 4%, 26%);

  /* Text colors */
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #A1A1AA;
  --color-text-muted: #71717A;

  /* Border colors */
  --color-border-subtle: hsla(0, 0%, 100%, 0.08);
  --color-border-default: hsla(0, 0%, 100%, 0.12);
  --color-border-strong: hsla(0, 0%, 100%, 0.20);

  /* Status colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Base styles */
html {
  color-scheme: dark;
}

body {
  @apply bg-neutral-bg1 text-text-primary font-sans antialiased;
  min-height: 100vh;
}

/* Focus styles */
*:focus-visible {
  @apply outline-none ring-2 ring-brand ring-offset-2 ring-offset-neutral-bg1;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  @apply bg-neutral-bg2;
}

::-webkit-scrollbar-thumb {
  @apply bg-neutral-bg5 rounded-full;
}

::-webkit-scrollbar-thumb:hover {
  @apply bg-neutral-bg6;
}

/* Glass utility classes */
@layer components {
  .glass {
    @apply backdrop-blur-md bg-white/5 border border-white/10;
  }

  .glass-card {
    @apply backdrop-blur-md bg-white/5 border border-white/10 rounded-xl;
  }

  .glass-panel {
    @apply backdrop-blur-lg bg-black/40 border border-white/5;
  }

  .glass-overlay {
    @apply backdrop-blur-sm bg-black/60;
  }

  .glass-input {
    @apply backdrop-blur-sm bg-white/5 border border-white/10 focus:border-brand focus:bg-white/10;
  }
}

/* Animation utilities */
@layer utilities {
  .animate-in {
    animation: fadeIn 0.3s ease-out, slideUp 0.3s ease-out;
  }
}
```

### src/main.tsx

```tsx
import React from 'react';
import ReactDOM from 'react-dom/client';
import { BrowserRouter } from 'react-router-dom';
import App from './App';
import './styles/globals.css';

ReactDOM.createRoot(document.getElementById('root')!).render(
  <React.StrictMode>
    <BrowserRouter>
      <App />
    </BrowserRouter>
  </React.StrictMode>
);
```

### src/App.tsx

```tsx
import { Routes, Route } from 'react-router-dom';
import { AnimatePresence } from 'framer-motion';
import { AppShell } from './components/layout/AppShell';
import { Dashboard } from './pages/Dashboard';
import { Settings } from './pages/Settings';

export default function App() {
  return (
    <AppShell>
      <AnimatePresence mode="wait">
        <Routes>
          <Route path="/" element={<Dashboard />} />
          <Route path="/settings" element={<Settings />} />
        </Routes>
      </AnimatePresence>
    </AppShell>
  );
}
```

## Animation Patterns

### Framer Motion Variants

```tsx
// Fade in on mount
export const fadeIn = {
  initial: { opacity: 0 },
  animate: { opacity: 1 },
  exit: { opacity: 0 },
  transition: { duration: 0.2 },
};

// Slide up on mount
export const slideUp = {
  initial: { opacity: 0, y: 20 },
  animate: { opacity: 1, y: 0 },
  exit: { opacity: 0, y: 20 },
  transition: { duration: 0.3, ease: 'easeOut' },
};

// Scale on hover (for buttons/cards)
export const scaleOnHover = {
  whileHover: { scale: 1.02 },
  whileTap: { scale: 0.98 },
  transition: { type: 'spring', stiffness: 400, damping: 17 },
};

// Stagger children
export const staggerContainer = {
  hidden: { opacity: 0 },
  visible: {
    opacity: 1,
    transition: {
      staggerChildren: 0.05,
      delayChildren: 0.1,
    },
  },
};

export const staggerItem = {
  hidden: { opacity: 0, y: 10 },
  visible: {
    opacity: 1,
    y: 0,
    transition: { duration: 0.2, ease: 'easeOut' },
  },
};
```

### Page Transition Wrapper

```tsx
import { motion } from 'framer-motion';
import { ReactNode } from 'react';

interface PageTransitionProps {
  children: ReactNode;
}

export function PageTransition({ children }: PageTransitionProps) {
  return (
    <motion.div
      initial={{ opacity: 0, y: 20 }}
      animate={{ opacity: 1, y: 0 }}
      exit={{ opacity: 0, y: -20 }}
      transition={{ duration: 0.3, ease: 'easeOut' }}
    >
      {children}
    </motion.div>
  );
}
```

## Glass Effect Patterns

### Glass Card

```tsx
<div className="glass-card p-6">
  <h2 className="text-lg font-semibold text-text-primary">Card Title</h2>
  <p className="text-text-secondary mt-2">Card content goes here.</p>
</div>
```

### Glass Panel (Sidebar)

```tsx
<aside className="glass-panel w-64 h-screen p-4">
  <nav className="space-y-2">
    {/* Navigation items */}
  </nav>
</aside>
```

### Glass Modal Overlay

```tsx
<motion.div
  className="fixed inset-0 glass-overlay flex items-center justify-center z-50"
  initial={{ opacity: 0 }}
  animate={{ opacity: 1 }}
  exit={{ opacity: 0 }}
>
  <motion.div
    className="glass-card p-6 max-w-md w-full mx-4"
    initial={{ scale: 0.95, opacity: 0 }}
    animate={{ scale: 1, opacity: 1 }}
    exit={{ scale: 0.95, opacity: 0 }}
  >
    {/* Modal content */}
  </motion.div>
</motion.div>
```

## Typography

| Element | Classes |
|---------|---------|
| Page title | `text-2xl font-semibold text-text-primary` |
| Section title | `text-lg font-semibold text-text-primary` |
| Card title | `text-base font-medium text-text-primary` |
| Body text | `text-sm text-text-secondary` |
| Caption | `text-xs text-text-muted` |
| Label | `text-sm font-medium text-text-secondary` |

## Color Usage

| Use Case | Color | Class |
|----------|-------|-------|
| Primary action | Brand purple | `bg-brand text-white` |
| Primary hover | Brand hover | `hover:bg-brand-hover` |
| Page background | Neutral bg1 | `bg-neutral-bg1` |
| Card background | Neutral bg2 | `bg-neutral-bg2` |
| Elevated surface | Neutral bg3 | `bg-neutral-bg3` |
| Input background | Neutral bg2 | `bg-neutral-bg2` |
| Input focus | Neutral bg3 | `focus:bg-neutral-bg3` |
| Border default | Border default | `border-border` |
| Border subtle | Border subtle | `border-border-subtle` |
| Success | Status success | `text-status-success` |
| Warning | Status warning | `text-status-warning` |
| Error | Status error | `text-status-error` |

## Related Files

- [Design Tokens](./references/design-tokens.md) — Complete color system, spacing, typography scales
- [Components](./references/components.md) — Button, Card, Input, Dialog, Tabs, and more
- [Patterns](./references/patterns.md) — Page layouts, navigation, lists, forms

Overview

This skill provides a ready-made dark-themed React UI system built with TypeScript, Tailwind CSS, and Framer Motion. It focuses on dashboards, admin panels, and data-rich interfaces with custom theming, glassmorphism utilities, and tasteful animations to deliver a refined dark aesthetic. The system includes layout primitives, reusable UI components, design tokens, and animation patterns to accelerate frontend development.

How this skill works

The skill supplies a starter project structure, Tailwind configuration with extended color tokens and utilities, and global CSS that implements glass effects, typography, and motion helpers. Framer Motion variants and a page transition wrapper are included for consistent entrance/exit and hover animations. Components and layout primitives (AppShell, Sidebar, Card, Button, Input, etc.) use the theme tokens and utility classes so you can compose pages quickly while preserving accessibility and mobile safe-area handling.

When to use it

Building dashboards, analytics consoles, or admin panels that need a polished dark UI.
Prototyping data-rich interfaces with consistent theming and motion patterns.
Creating SaaS frontends where glassmorphism and subtle animations improve perceived quality.
Migrating a light UI to a modern dark theme with design tokens and Tailwind utilities.
Starting a new React + Vite TypeScript project that requires a production-ready style system.

Best practices

Keep layout and theme tokens centralized in Tailwind config and CSS custom properties to simplify maintenance.
Prefer Framer Motion variants and stagger patterns for coordinated animations instead of ad-hoc inline transitions.
Use glass utility classes for elevated surfaces and reserve stronger contrast for important actions.
Respect minimum touch target sizes and safe-area spacing included in the theme for mobile usability.
Limit heavy backdrop-blur usage on low-end devices; provide fallbacks or reduce blur radius where performance is impacted.

Example use cases

Admin dashboard with a glass-panel sidebar, data tables, and animated page transitions.
Monitoring console that uses dataviz color tokens for charts and status indicators.
Settings area with glass-card forms, animated modals, and accessible inputs.
SaaS landing pages demonstrating product analytics with refined dark branding and motion.
Internal tooling requiring rapid composition of consistent UI components and theme tokens.

FAQ

What packages are required to use this system?

React 18+, React Router 6, Framer Motion, Tailwind CSS, clsx, Vite, and TypeScript are the primary dependencies.

How do I customize brand colors or spacing?

Edit the color, spacing, and radius tokens in tailwind.config.js and the CSS custom properties in the global stylesheet to propagate changes across components.