css-generation

What this skill does

# CSS Generation Skill

Generate CSS, Tailwind, and styled-components code from design style selections.

## Overview

This skill provides tools and templates for converting design tokens and style selections into production-ready CSS, Tailwind configurations, and styled-components theme objects.

## CSS Variables Generation from Design Tokens

### Design Token Structure

```typescript
interface DesignTokens {
  colors: ColorTokens;
  spacing: SpacingTokens;
  typography: TypographyTokens;
  shadows: ShadowTokens;
  borders: BorderTokens;
  effects: EffectTokens;
}

interface ColorTokens {
  primary: ColorScale;
  secondary: ColorScale;
  neutral: ColorScale;
  success: ColorScale;
  warning: ColorScale;
  error: ColorScale;
  info: ColorScale;
}

interface ColorScale {
  50: string;
  100: string;
  200: string;
  300: string;
  400: string;
  500: string;  // Base color
  600: string;
  700: string;
  800: string;
  900: string;
}
```

### CSS Variables Template

**styles/tokens.css:**
```css
:root {
  /* Color Tokens - Primary */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;  /* Base */
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  /* Semantic Color Mappings */
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-600);
  --color-text-disabled: var(--color-neutral-400);
  --color-bg-primary: #ffffff;
  --color-bg-secondary: var(--color-neutral-50);
  --color-border: var(--color-neutral-200);
  --color-focus: var(--color-primary-500);

  /* Spacing Tokens */
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0-5: 0.125rem;  /* 2px */
  --spacing-1: 0.25rem;     /* 4px */
  --spacing-1-5: 0.375rem;  /* 6px */
  --spacing-2: 0.5rem;      /* 8px */
  --spacing-2-5: 0.625rem;  /* 10px */
  --spacing-3: 0.75rem;     /* 12px */
  --spacing-3-5: 0.875rem;  /* 14px */
  --spacing-4: 1rem;        /* 16px */
  --spacing-5: 1.25rem;     /* 20px */
  --spacing-6: 1.5rem;      /* 24px */
  --spacing-7: 1.75rem;     /* 28px */
  --spacing-8: 2rem;        /* 32px */
  --spacing-9: 2.25rem;     /* 36px */
  --spacing-10: 2.5rem;     /* 40px */
  --spacing-12: 3rem;       /* 48px */
  --spacing-16: 4rem;       /* 64px */
  --spacing-20: 5rem;       /* 80px */
  --spacing-24: 6rem;       /* 96px */
  --spacing-32: 8rem;       /* 128px */

  /* Typography Tokens */
  --font-family-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  --font-size-4xl: 2.25rem;     /* 36px */
  --font-size-5xl: 3rem;        /* 48px */
  --font-size-6xl: 3.75rem;     /* 60px */

  --font-weight-thin: 100;
  --font-weight-extralight: 200;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Shadow Tokens */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);

  /* Border Radius Tokens */
  --radius-none: 0;
  --radius-sm: 0.125rem;   /* 2px */
  --radius-md: 0.375rem;   /* 6px */
  --radius-lg: 0.5rem;     /* 8px */
  --radius-xl: 0.75rem;    /* 12px */
  --radius-2xl: 1rem;      /* 16px */
  --radius-3xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;

  /* Transition Tokens */
  --transition-fast: 150ms;
  --transition-base: 250ms;
  --transition-slow: 350ms;
  --transition-slower: 500ms;

  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Tokens */
[data-theme="dark"] {
  --color-text-primary: var(--color-neutral-50);
  --color-text-secondary: var(--color-neutral-400);
  --color-text-disabled: var(--color-neutral-600);
  --color-bg-primary: var(--color-neutral-900);
  --color-bg-secondary: var(--color-neutral-800);
  --color-border: var(--color-neutral-700);
}
```

## Tailwind Configuration Templates

### Full Tailwind Config

**tailwind.config.ts:**
```typescript
import type { Config } from 'tailwindcss';

const config: Config = {
  content: [
    './pages/**/*.{js,ts,jsx,tsx,mdx}',
    './components/**/*.{js,ts,jsx,tsx,mdx}',
    './app/**/*.{js,ts,jsx,tsx,mdx}',
  ],
  darkMode: ['class', '[data-theme="dark"]'],
  theme: {
    extend: {
      colors: {
        primary: {
          50: '#eff6ff',
          100: '#dbeafe',
          200: '#bfdbfe',
          300: '#93c5fd',
          400: '#60a5fa',
          500: '#3b82f6',
          600: '#2563eb',
          700: '#1d4ed8',
          800: '#1e40af',
          900: '#1e3a8a',
        },
        secondary: {
          50: '#f8fafc',
          100: '#f1f5f9',
          200: '#e2e8f0',
          300: '#cbd5e1',
          400: '#94a3b8',
          500: '#64748b',
          600: '#475569',
          700: '#334155',
          800: '#1e293b',
          900: '#0f172a',
        },
        success: {
          50: '#f0fdf4',
          100: '#dcfce7',
          200: '#bbf7d0',
          300: '#86efac',
          400: '#4ade80',
          500: '#22c55e',
          600: '#16a34a',
          700: '#15803d',
          800: '#166534',
          900: '#14532d',
        },
        warning: {
          50: '#fffbeb',
          100: '#fef3c7',
          200: '#fde68a',
          300: '#fcd34d',
          400: '#fbbf24',
          500: '#f59e0b',
          600: '#d97706',
          700: '#b45309',
          800: '#92400e',
          900: '#78350f',
        },
        error: {
          50: '#fef2f2',
          100: '#fee2e2',
          200: '#fecaca',
          300: '#fca5a5',
          400: '#f87171',
          500: '#ef4444',
          600: '#dc2626',
          700: '#b91c1c',
          800: '#991b1b',
          900: '#7f1d1d',
        },
      },
      spacing: {
        '0.5': '0.125rem',
        '1.5': '0.375rem',
        '2.5': '0.625rem',
        '3.5': '0.875rem',
        '18': '4.5rem',
        '88': '22rem',
        '100': '25rem',
        '112': '28rem',
        '128': '32rem',
      },
      fontFamily: {
        sans: ['var(--font-inter)', 'ui-sans-serif', 'system-ui', 'sans-serif'],
        serif: ['var(--font-merriweather)', 'ui-serif', 'Georgia', 'serif'],
        mono: ['var(--font-jetbrains-mono)', 'ui-monospace', 'monospace'],
      },
      fontSize: {
        '2xs': ['0.625rem', { lineHeight: '0.75rem' }],
        'xs': ['0.75rem', { lineHeight: '1rem' }],
        'sm': ['0.875rem', { lineHeight: '1.25rem' }],
        'base': ['1rem', { lineHeight: '1.5rem' }],
        'lg': ['1.125rem', { lineHeight: '1.75rem' }],
        'xl': ['1.25rem', { lineHeight: '1.75rem' }],
        '2xl': ['1.5rem', { lineHeight: '2rem' }],
        '3xl': ['