Back to Details

tailwind-design-system

Compare original and translation side by side

🇺🇸

Original

English
🇨🇳

Translation

Chinese

Tailwind Design System (v4)

Tailwind 设计系统（v4版）

Build production-ready design systems with Tailwind CSS v4, including CSS-first configuration, design tokens, component variants, responsive patterns, and accessibility.
Note: This skill targets Tailwind CSS v4 (2024+). For v3 projects, refer to the upgrade guide.
使用Tailwind CSS v4构建可投入生产的设计系统，包括CSS优先配置、设计令牌、组件变体、响应式模式和无障碍支持。
注意：本技能针对Tailwind CSS v4（2024及以后版本）。针对v3项目，请参考升级指南。

When to Use This Skill

适用场景

  • Creating a component library with Tailwind v4
  • Implementing design tokens and theming with CSS-first configuration
  • Building responsive and accessible components
  • Standardizing UI patterns across a codebase
  • Migrating from Tailwind v3 to v4
  • Setting up dark mode with native CSS features
  • 使用Tailwind v4创建组件库
  • 通过CSS优先配置实现设计令牌和主题定制
  • 构建响应式且支持无障碍的组件
  • 在代码库中标准化UI模式
  • 从Tailwind v3迁移到v4
  • 使用原生CSS特性设置深色模式

Key v4 Changes

v4核心变更

v3 Patternv4 Pattern
tailwind.config.ts
@theme
in CSS
@tailwind base/components/utilities
@import "tailwindcss"
darkMode: "class"
@custom-variant dark (&:where(.dark, .dark *))
theme.extend.colors
@theme { --color-*: value }
require("tailwindcss-animate")
CSS 
@keyframes
in 
@theme
+ 
@starting-style
for entry animations
v3 写法v4 写法
tailwind.config.ts
CSS中的
@theme
@tailwind base/components/utilities
@import "tailwindcss"
darkMode: "class"
@custom-variant dark (&:where(.dark, .dark *))
theme.extend.colors
@theme { --color-*: value }
require("tailwindcss-animate")
@theme
内的CSS 
@keyframes
+ 
@starting-style
实现入场动画

Quick Start

快速开始

css
/* app.css - Tailwind v4 CSS-first configuration */
@import "tailwindcss";

/* Define your theme with @theme */
@theme {
  /* Semantic color tokens using OKLCH for better color perception */
  --color-background: oklch(100% 0 0);
  --color-foreground: oklch(14.5% 0.025 264);

  --color-primary: oklch(14.5% 0.025 264);
  --color-primary-foreground: oklch(98% 0.01 264);

  --color-secondary: oklch(96% 0.01 264);
  --color-secondary-foreground: oklch(14.5% 0.025 264);

  --color-muted: oklch(96% 0.01 264);
  --color-muted-foreground: oklch(46% 0.02 264);

  --color-accent: oklch(96% 0.01 264);
  --color-accent-foreground: oklch(14.5% 0.025 264);

  --color-destructive: oklch(53% 0.22 27);
  --color-destructive-foreground: oklch(98% 0.01 264);

  --color-border: oklch(91% 0.01 264);
  --color-ring: oklch(14.5% 0.025 264);

  --color-card: oklch(100% 0 0);
  --color-card-foreground: oklch(14.5% 0.025 264);

  /* Ring offset for focus states */
  --color-ring-offset: oklch(100% 0 0);

  /* Radius tokens */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* Animation tokens - keyframes inside @theme are output when referenced by --animate-* variables */
  --animate-fade-in: fade-in 0.2s ease-out;
  --animate-fade-out: fade-out 0.2s ease-in;
  --animate-slide-in: slide-in 0.3s ease-out;
  --animate-slide-out: slide-out 0.3s ease-in;

  @keyframes fade-in {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  @keyframes fade-out {
    from {
      opacity: 1;
    }
    to {
      opacity: 0;
    }
  }

  @keyframes slide-in {
    from {
      transform: translateY(-0.5rem);
      opacity: 0;
    }
    to {
      transform: translateY(0);
      opacity: 1;
    }
  }

  @keyframes slide-out {
    from {
      transform: translateY(0);
      opacity: 1;
    }
    to {
      transform: translateY(-0.5rem);
      opacity: 0;
    }
  }
}

/* Dark mode variant - use @custom-variant for class-based dark mode */
@custom-variant dark (&:where(.dark, .dark *));

/* Dark mode theme overrides */
.dark {
  --color-background: oklch(14.5% 0.025 264);
  --color-foreground: oklch(98% 0.01 264);

  --color-primary: oklch(98% 0.01 264);
  --color-primary-foreground: oklch(14.5% 0.025 264);

  --color-secondary: oklch(22% 0.02 264);
  --color-secondary-foreground: oklch(98% 0.01 264);

  --color-muted: oklch(22% 0.02 264);
  --color-muted-foreground: oklch(65% 0.02 264);

  --color-accent: oklch(22% 0.02 264);
  --color-accent-foreground: oklch(98% 0.01 264);

  --color-destructive: oklch(42% 0.15 27);
  --color-destructive-foreground: oklch(98% 0.01 264);

  --color-border: oklch(22% 0.02 264);
  --color-ring: oklch(83% 0.02 264);

  --color-card: oklch(14.5% 0.025 264);
  --color-card-foreground: oklch(98% 0.01 264);

  --color-ring-offset: oklch(14.5% 0.025 264);
}

/* Base styles */
@layer base {
  * {
    @apply border-border;
  }

  body {
    @apply bg-background text-foreground antialiased;
  }
}
css
/* app.css - Tailwind v4 CSS优先配置 */
@import "tailwindcss";

/* 使用@theme定义主题 */
@theme {
  /* 采用OKLCH色彩模型的语义化颜色令牌，实现更优的色彩感知一致性 */
  --color-background: oklch(100% 0 0);
  --color-foreground: oklch(14.5% 0.025 264);

  --color-primary: oklch(14.5% 0.025 264);
  --color-primary-foreground: oklch(98% 0.01 264);

  --color-secondary: oklch(96% 0.01 264);
  --color-secondary-foreground: oklch(14.5% 0.025 264);

  --color-muted: oklch(96% 0.01 264);
  --color-muted-foreground: oklch(46% 0.02 264);

  --color-accent: oklch(96% 0.01 264);
  --color-accent-foreground: oklch(14.5% 0.025 264);

  --color-destructive: oklch(53% 0.22 27);
  --color-destructive-foreground: oklch(98% 0.01 264);

  --color-border: oklch(91% 0.01 264);
  --color-ring: oklch(14.5% 0.025 264);

  --color-card: oklch(100% 0 0);
  --color-card-foreground: oklch(14.5% 0.025 264);

  /* 焦点状态的环偏移色 */
  --color-ring-offset: oklch(100% 0 0);

  /* 圆角令牌 */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* 动画令牌 - @theme内的关键帧会在被--animate-*变量引用时输出 */
  --animate-fade-in: fade-in 0.2s ease-out;
  --animate-fade-out: fade-out 0.2s ease-in;
  --animate-slide-in: slide-in 0.3s ease-out;
  --animate-slide-out: slide-out 0.3s ease-in;

  @keyframes fade-in {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  @keyframes fade-out {
    from {
      opacity: 1;
    }
    to {
      opacity: 0;
    }
  }

  @keyframes slide-in {
    from {
      transform: translateY(-0.5rem);
      opacity: 0;
    }
    to {
      transform: translateY(0);
      opacity: 1;
    }
  }

  @keyframes slide-out {
    from {
      transform: translateY(0);
      opacity: 1;
    }
    to {
      transform: translateY(-0.5rem);
      opacity: 0;
    }
  }
}

/* 深色模式变体 - 使用@custom-variant实现基于类的深色模式 */
@custom-variant dark (&:where(.dark, .dark *));

/* 深色模式主题覆盖 */
.dark {
  --color-background: oklch(14.5% 0.025 264);
  --color-foreground: oklch(98% 0.01 264);

  --color-primary: oklch(98% 0.01 264);
  --color-primary-foreground: oklch(14.5% 0.025 264);

  --color-secondary: oklch(22% 0.02 264);
  --color-secondary-foreground: oklch(98% 0.01 264);

  --color-muted: oklch(22% 0.02 264);
  --color-muted-foreground: oklch(65% 0.02 264);

  --color-accent: oklch(22% 0.02 264);
  --color-accent-foreground: oklch(98% 0.01 264);

  --color-destructive: oklch(42% 0.15 27);
  --color-destructive-foreground: oklch(98% 0.01 264);

  --color-border: oklch(22% 0.02 264);
  --color-ring: oklch(83% 0.02 264);

  --color-card: oklch(14.5% 0.025 264);
  --color-card-foreground: oklch(98% 0.01 264);

  --color-ring-offset: oklch(14.5% 0.025 264);
}

/* 基础样式 */
@layer base {
  * {
    @apply border-border;
  }

  body {
    @apply bg-background text-foreground antialiased;
  }
}

Core Concepts

核心概念

1. Design Token Hierarchy

1. 设计令牌层级

Brand Tokens (abstract)
    └── Semantic Tokens (purpose)
        └── Component Tokens (specific)

Example:
    oklch(45% 0.2 260) → --color-primary → bg-primary
品牌令牌（抽象层）
    └── 语义化令牌（用途层）
        └── 组件令牌（具体层）

示例：
    oklch(45% 0.2 260) → --color-primary → bg-primary

2. Component Architecture

2. 组件架构

Base styles → Variants → Sizes → States → Overrides
基础样式 → 变体 → 尺寸 → 状态 → 覆盖样式

Patterns

实践模式

Pattern 1: CVA (Class Variance Authority) Components

模式1：CVA（Class Variance Authority）组件

typescript
// components/ui/button.tsx
import { Slot } from '@radix-ui/react-slot'
import { cva, type VariantProps } from 'class-variance-authority'
import { cn } from '@/lib/utils'

const buttonVariants = cva(
  // Base styles - v4 uses native CSS variables
  'inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50',
  {
    variants: {
      variant: {
        default: 'bg-primary text-primary-foreground hover:bg-primary/90',
        destructive: 'bg-destructive text-destructive-foreground hover:bg-destructive/90',
        outline: 'border border-border bg-background hover:bg-accent hover:text-accent-foreground',
        secondary: 'bg-secondary text-secondary-foreground hover:bg-secondary/80',
        ghost: 'hover:bg-accent hover:text-accent-foreground',
        link: 'text-primary underline-offset-4 hover:underline',
      },
      size: {
        default: 'h-10 px-4 py-2',
        sm: 'h-9 rounded-md px-3',
        lg: 'h-11 rounded-md px-8',
        icon: 'size-10',
      },
    },
    defaultVariants: {
      variant: 'default',
      size: 'default',
    },
  }
)

export interface ButtonProps
  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
    VariantProps<typeof buttonVariants> {
  asChild?: boolean
}

// React 19: No forwardRef needed
export function Button({
  className,
  variant,
  size,
  asChild = false,
  ref,
  ...props
}: ButtonProps & { ref?: React.Ref<HTMLButtonElement> }) {
  const Comp = asChild ? Slot : 'button'
  return (
    <Comp
      className={cn(buttonVariants({ variant, size, className }))}
      ref={ref}
      {...props}
    />
  )
}

// Usage
<Button variant="destructive" size="lg">Delete</Button>
<Button variant="outline">Cancel</Button>
<Button asChild><Link href="/home">Home</Link></Button>
typescript
// components/ui/button.tsx
import { Slot } from '@radix-ui/react-slot'
import { cva, type VariantProps } from 'class-variance-authority'
import { cn } from '@/lib/utils'

const buttonVariants = cva(
  // 基础样式 - v4使用原生CSS变量
  'inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50',
  {
    variants: {
      variant: {
        default: 'bg-primary text-primary-foreground hover:bg-primary/90',
        destructive: 'bg-destructive text-destructive-foreground hover:bg-destructive/90',
        outline: 'border border-border bg-background hover:bg-accent hover:text-accent-foreground',
        secondary: 'bg-secondary text-secondary-foreground hover:bg-secondary/80',
        ghost: 'hover:bg-accent hover:text-accent-foreground',
        link: 'text-primary underline-offset-4 hover:underline',
      },
      size: {
        default: 'h-10 px-4 py-2',
        sm: 'h-9 rounded-md px-3',
        lg: 'h-11 rounded-md px-8',
        icon: 'size-10',
      },
    },
    defaultVariants: {
      variant: 'default',
      size: 'default',
    },
  }
)

export interface ButtonProps
  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
    VariantProps<typeof buttonVariants> {
  asChild?: boolean
}

// React 19: 无需使用forwardRef
export function Button({
  className,
  variant,
  size,
  asChild = false,
  ref,
  ...props
}: ButtonProps & { ref?: React.Ref<HTMLButtonElement> }) {
  const Comp = asChild ? Slot : 'button'
  return (
    <Comp
      className={cn(buttonVariants({ variant, size, className }))}
      ref={ref}
      {...props}
    />
  )
}

// 使用示例
<Button variant="destructive" size="lg">Delete</Button>
<Button variant="outline">Cancel</Button>
<Button asChild><Link href="/home">Home</Link></Button>

Pattern 2: Compound Components (React 19)

模式2：复合组件（React 19）

typescript
// components/ui/card.tsx
import { cn } from '@/lib/utils'

// React 19: ref is a regular prop, no forwardRef
export function Card({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div
      ref={ref}
      className={cn(
        'rounded-lg border border-border bg-card text-card-foreground shadow-sm',
        className
      )}
      {...props}
    />
  )
}

export function CardHeader({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div
      ref={ref}
      className={cn('flex flex-col space-y-1.5 p-6', className)}
      {...props}
    />
  )
}

export function CardTitle({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLHeadingElement> & { ref?: React.Ref<HTMLHeadingElement> }) {
  return (
    <h3
      ref={ref}
      className={cn('text-2xl font-semibold leading-none tracking-tight', className)}
      {...props}
    />
  )
}

export function CardDescription({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLParagraphElement> & { ref?: React.Ref<HTMLParagraphElement> }) {
  return (
    <p
      ref={ref}
      className={cn('text-sm text-muted-foreground', className)}
      {...props}
    />
  )
}

export function CardContent({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div ref={ref} className={cn('p-6 pt-0', className)} {...props} />
  )
}

export function CardFooter({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div
      ref={ref}
      className={cn('flex items-center p-6 pt-0', className)}
      {...props}
    />
  )
}

// Usage
<Card>
  <CardHeader>
    <CardTitle>Account</CardTitle>
    <CardDescription>Manage your account settings</CardDescription>
  </CardHeader>
  <CardContent>
    <form>...</form>
  </CardContent>
  <CardFooter>
    <Button>Save</Button>
  </CardFooter>
</Card>
typescript
// components/ui/card.tsx
import { cn } from '@/lib/utils'

// React 19: ref作为普通属性传递，无需forwardRef
export function Card({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div
      ref={ref}
      className={cn(
        'rounded-lg border border-border bg-card text-card-foreground shadow-sm',
        className
      )}
      {...props}
    />
  )
}

export function CardHeader({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div
      ref={ref}
      className={cn('flex flex-col space-y-1.5 p-6', className)}
      {...props}
    />
  )
}

export function CardTitle({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLHeadingElement> & { ref?: React.Ref<HTMLHeadingElement> }) {
  return (
    <h3
      ref={ref}
      className={cn('text-2xl font-semibold leading-none tracking-tight', className)}
      {...props}
    />
  )
}

export function CardDescription({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLParagraphElement> & { ref?: React.Ref<HTMLParagraphElement> }) {
  return (
    <p
      ref={ref}
      className={cn('text-sm text-muted-foreground', className)}
      {...props}
    />
  )
}

export function CardContent({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div ref={ref} className={cn('p-6 pt-0', className)} {...props} />
  )
}

export function CardFooter({
  className,
  ref,
  ...props
}: React.HTMLAttributes<HTMLDivElement> & { ref?: React.Ref<HTMLDivElement> }) {
  return (
    <div
      ref={ref}
      className={cn('flex items-center p-6 pt-0', className)}
      {...props}
    />
  )
}

// 使用示例
<Card>
  <CardHeader>
    <CardTitle>Account</CardTitle>
    <CardDescription>Manage your account settings</CardDescription>
  </CardHeader>
  <CardContent>
    <form>...</form>
  </CardContent>
  <CardFooter>
    <Button>Save</Button>
  </CardFooter>
</Card>

Pattern 3: Form Components

模式3：表单组件

typescript
// components/ui/input.tsx
import { cn } from '@/lib/utils'

export interface InputProps extends React.InputHTMLAttributes<HTMLInputElement> {
  error?: string
  ref?: React.Ref<HTMLInputElement>
}

export function Input({ className, type, error, ref, ...props }: InputProps) {
  return (
    <div className="relative">
      <input
        type={type}
        className={cn(
          'flex h-10 w-full rounded-md border border-border bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
          error && 'border-destructive focus-visible:ring-destructive',
          className
        )}
        ref={ref}
        aria-invalid={!!error}
        aria-describedby={error ? `${props.id}-error` : undefined}
        {...props}
      />
      {error && (
        <p
          id={`${props.id}-error`}
          className="mt-1 text-sm text-destructive"
          role="alert"
        >
          {error}
        </p>
      )}
    </div>
  )
}

// components/ui/label.tsx
import { cva, type VariantProps } from 'class-variance-authority'

const labelVariants = cva(
  'text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70'
)

export function Label({
  className,
  ref,
  ...props
}: React.LabelHTMLAttributes<HTMLLabelElement> & { ref?: React.Ref<HTMLLabelElement> }) {
  return (
    <label ref={ref} className={cn(labelVariants(), className)} {...props} />
  )
}

// Usage with React Hook Form + Zod
import { useForm } from 'react-hook-form'
import { zodResolver } from '@hookform/resolvers/zod'
import { z } from 'zod'

const schema = z.object({
  email: z.string().email('Invalid email address'),
  password: z.string().min(8, 'Password must be at least 8 characters'),
})

function LoginForm() {
  const { register, handleSubmit, formState: { errors } } = useForm({
    resolver: zodResolver(schema),
  })

  return (
    <form onSubmit={handleSubmit(onSubmit)} className="space-y-4">
      <div className="space-y-2">
        <Label htmlFor="email">Email</Label>
        <Input
          id="email"
          type="email"
          {...register('email')}
          error={errors.email?.message}
        />
      </div>
      <div className="space-y-2">
        <Label htmlFor="password">Password</Label>
        <Input
          id="password"
          type="password"
          {...register('password')}
          error={errors.password?.message}
        />
      </div>
      <Button type="submit" className="w-full">Sign In</Button>
    </form>
  )
}
typescript
// components/ui/input.tsx
import { cn } from '@/lib/utils'

export interface InputProps extends React.InputHTMLAttributes<HTMLInputElement> {
  error?: string
  ref?: React.Ref<HTMLInputElement>
}

export function Input({ className, type, error, ref, ...props }: InputProps) {
  return (
    <div className="relative">
      <input
        type={type}
        className={cn(
          'flex h-10 w-full rounded-md border border-border bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
          error && 'border-destructive focus-visible:ring-destructive',
          className
        )}
        ref={ref}
        aria-invalid={!!error}
        aria-describedby={error ? `${props.id}-error` : undefined}
        {...props}
      />
      {error && (
        <p
          id={`${props.id}-error`}
          className="mt-1 text-sm text-destructive"
          role="alert"
        >
          {error}
        </p>
      )}
    </div>
  )
}

// components/ui/label.tsx
import { cva, type VariantProps } from 'class-variance-authority'

const labelVariants = cva(
  'text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70'
)

export function Label({
  className,
  ref,
  ...props
}: React.LabelHTMLAttributes<HTMLLabelElement> & { ref?: React.Ref<HTMLLabelElement> }) {
  return (
    <label ref={ref} className={cn(labelVariants(), className)} {...props} />
  )
}

// 结合React Hook Form + Zod使用示例
import { useForm } from 'react-hook-form'
import { zodResolver } from '@hookform/resolvers/zod'
import { z } from 'zod'

const schema = z.object({
  email: z.string().email('Invalid email address'),
  password: z.string().min(8, 'Password must be at least 8 characters'),
})

function LoginForm() {
  const { register, handleSubmit, formState: { errors } } = useForm({
    resolver: zodResolver(schema),
  })

  return (
    <form onSubmit={handleSubmit(onSubmit)} className="space-y-4">
      <div className="space-y-2">
        <Label htmlFor="email">Email</Label>
        <Input
          id="email"
          type="email"
          {...register('email')}
          error={errors.email?.message}
        />
      </div>
      <div className="space-y-2">
        <Label htmlFor="password">Password</Label>
        <Input
          id="password"
          type="password"
          {...register('password')}
          error={errors.password?.message}
        />
      </div>
      <Button type="submit" className="w-full">Sign In</Button>
    </form>
  )
}

Pattern 4: Responsive Grid System

模式4：响应式网格系统

typescript
// components/ui/grid.tsx
import { cn } from '@/lib/utils'
import { cva, type VariantProps } from 'class-variance-authority'

const gridVariants = cva('grid', {
  variants: {
    cols: {
      1: 'grid-cols-1',
      2: 'grid-cols-1 sm:grid-cols-2',
      3: 'grid-cols-1 sm:grid-cols-2 lg:grid-cols-3',
      4: 'grid-cols-1 sm:grid-cols-2 lg:grid-cols-4',
      5: 'grid-cols-2 sm:grid-cols-3 lg:grid-cols-5',
      6: 'grid-cols-2 sm:grid-cols-3 lg:grid-cols-6',
    },
    gap: {
      none: 'gap-0',
      sm: 'gap-2',
      md: 'gap-4',
      lg: 'gap-6',
      xl: 'gap-8',
    },
  },
  defaultVariants: {
    cols: 3,
    gap: 'md',
  },
})

interface GridProps
  extends React.HTMLAttributes<HTMLDivElement>,
    VariantProps<typeof gridVariants> {}

export function Grid({ className, cols, gap, ...props }: GridProps) {
  return (
    <div className={cn(gridVariants({ cols, gap, className }))} {...props} />
  )
}

// Container component
const containerVariants = cva('mx-auto w-full px-4 sm:px-6 lg:px-8', {
  variants: {
    size: {
      sm: 'max-w-screen-sm',
      md: 'max-w-screen-md',
      lg: 'max-w-screen-lg',
      xl: 'max-w-screen-xl',
      '2xl': 'max-w-screen-2xl',
      full: 'max-w-full',
    },
  },
  defaultVariants: {
    size: 'xl',
  },
})

interface ContainerProps
  extends React.HTMLAttributes<HTMLDivElement>,
    VariantProps<typeof containerVariants> {}

export function Container({ className, size, ...props }: ContainerProps) {
  return (
    <div className={cn(containerVariants({ size, className }))} {...props} />
  )
}

// Usage
<Container>
  <Grid cols={4} gap="lg">
    {products.map((product) => (
      <ProductCard key={product.id} product={product} />
    ))}
  </Grid>
</Container>
typescript
// components/ui/grid.tsx
import { cn } from '@/lib/utils'
import { cva, type VariantProps } from 'class-variance-authority'

const gridVariants = cva('grid', {
  variants: {
    cols: {
      1: 'grid-cols-1',
      2: 'grid-cols-1 sm:grid-cols-2',
      3: 'grid-cols-1 sm:grid-cols-2 lg:grid-cols-3',
      4: 'grid-cols-1 sm:grid-cols-2 lg:grid-cols-4',
      5: 'grid-cols-2 sm:grid-cols-3 lg:grid-cols-5',
      6: 'grid-cols-2 sm:grid-cols-3 lg:grid-cols-6',
    },
    gap: {
      none: 'gap-0',
      sm: 'gap-2',
      md: 'gap-4',
      lg: 'gap-6',
      xl: 'gap-8',
    },
  },
  defaultVariants: {
    cols: 3,
    gap: 'md',
  },
})

interface GridProps
  extends React.HTMLAttributes<HTMLDivElement>,
    VariantProps<typeof gridVariants> {}

export function Grid({ className, cols, gap, ...props }: GridProps) {
  return (
    <div className={cn(gridVariants({ cols, gap, className }))} {...props} />
  )
}

// 容器组件
const containerVariants = cva('mx-auto w-full px-4 sm:px-6 lg:px-8', {
  variants: {
    size: {
      sm: 'max-w-screen-sm',
      md: 'max-w-screen-md',
      lg: 'max-w-screen-lg',
      xl: 'max-w-screen-xl',
      '2xl': 'max-w-screen-2xl',
      full: 'max-w-full',
    },
  },
  defaultVariants: {
    size: 'xl',
  },
})

interface ContainerProps
  extends React.HTMLAttributes<HTMLDivElement>,
    VariantProps<typeof containerVariants> {}

export function Container({ className, size, ...props }: ContainerProps) {
  return (
    <div className={cn(containerVariants({ size, className }))} {...props} />
  )
}

// 使用示例
<Container>
  <Grid cols={4} gap="lg">
    {products.map((product) => (
      <ProductCard key={product.id} product={product} />
    ))}
  </Grid>
</Container>

Pattern 5: Native CSS Animations (v4)

模式5：原生CSS动画（v4）

css
/* In your CSS file - native @starting-style for entry animations */
@theme {
  --animate-dialog-in: dialog-fade-in 0.2s ease-out;
  --animate-dialog-out: dialog-fade-out 0.15s ease-in;
}

@keyframes dialog-fade-in {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-0.5rem);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes dialog-fade-out {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.95) translateY(-0.5rem);
  }
}

/* Native popover animations using @starting-style */
[popover] {
  transition:
    opacity 0.2s,
    transform 0.2s,
    display 0.2s allow-discrete;
  opacity: 0;
  transform: scale(0.95);
}

[popover]:popover-open {
  opacity: 1;
  transform: scale(1);
}

@starting-style {
  [popover]:popover-open {
    opacity: 0;
    transform: scale(0.95);
  }
}
typescript
// components/ui/dialog.tsx - Using native popover API
import * as DialogPrimitive from '@radix-ui/react-dialog'
import { cn } from '@/lib/utils'

const DialogPortal = DialogPrimitive.Portal

export function DialogOverlay({
  className,
  ref,
  ...props
}: React.ComponentPropsWithoutRef<typeof DialogPrimitive.Overlay> & {
  ref?: React.Ref<HTMLDivElement>
}) {
  return (
    <DialogPrimitive.Overlay
      ref={ref}
      className={cn(
        'fixed inset-0 z-50 bg-black/80',
        'data-[state=open]:animate-fade-in data-[state=closed]:animate-fade-out',
        className
      )}
      {...props}
    />
  )
}

export function DialogContent({
  className,
  children,
  ref,
  ...props
}: React.ComponentPropsWithoutRef<typeof DialogPrimitive.Content> & {
  ref?: React.Ref<HTMLDivElement>
}) {
  return (
    <DialogPortal>
      <DialogOverlay />
      <DialogPrimitive.Content
        ref={ref}
        className={cn(
          'fixed left-1/2 top-1/2 z-50 grid w-full max-w-lg -translate-x-1/2 -translate-y-1/2 gap-4 border border-border bg-background p-6 shadow-lg sm:rounded-lg',
          'data-[state=open]:animate-dialog-in data-[state=closed]:animate-dialog-out',
          className
        )}
        {...props}
      >
        {children}
      </DialogPrimitive.Content>
    </DialogPortal>
  )
}
css
/* 在CSS文件中 - 使用原生@starting-style实现入场动画 */
@theme {
  --animate-dialog-in: dialog-fade-in 0.2s ease-out;
  --animate-dialog-out: dialog-fade-out 0.15s ease-in;
}

@keyframes dialog-fade-in {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-0.5rem);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes dialog-fade-out {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.95) translateY(-0.5rem);
  }
}

/* 使用@starting-style实现原生弹出层动画 */
[popover] {
  transition:
    opacity 0.2s,
    transform 0.2s,
    display 0.2s allow-discrete;
  opacity: 0;
  transform: scale(0.95);
}

[popover]:popover-open {
  opacity: 1;
  transform: scale(1);
}

@starting-style {
  [popover]:popover-open {
    opacity: 0;
    transform: scale(0.95);
  }
}
typescript
// components/ui/dialog.tsx - 使用原生popover API
import * as DialogPrimitive from '@radix-ui/react-dialog'
import { cn } from '@/lib/utils'

const DialogPortal = DialogPrimitive.Portal

export function DialogOverlay({
  className,
  ref,
  ...props
}: React.ComponentPropsWithoutRef<typeof DialogPrimitive.Overlay> & {
  ref?: React.Ref<HTMLDivElement>
}) {
  return (
    <DialogPrimitive.Overlay
      ref={ref}
      className={cn(
        'fixed inset-0 z-50 bg-black/80',
        'data-[state=open]:animate-fade-in data-[state=closed]:animate-fade-out',
        className
      )}
      {...props}
    />
  )
}

export function DialogContent({
  className,
  children,
  ref,
  ...props
}: React.ComponentPropsWithoutRef<typeof DialogPrimitive.Content> & {
  ref?: React.Ref<HTMLDivElement>
}) {
  return (
    <DialogPortal>
      <DialogOverlay />
      <DialogPrimitive.Content
        ref={ref}
        className={cn(
          'fixed left-1/2 top-1/2 z-50 grid w-full max-w-lg -translate-x-1/2 -translate-y-1/2 gap-4 border border-border bg-background p-6 shadow-lg sm:rounded-lg',
          'data-[state=open]:animate-dialog-in data-[state=closed]:animate-dialog-out',
          className
        )}
        {...props}
      >
        {children}
      </DialogPrimitive.Content>
    </DialogPortal>
  )
}

Pattern 6: Dark Mode with CSS (v4)

模式6：CSS实现深色模式（v4）

typescript
// providers/ThemeProvider.tsx - Simplified for v4
'use client'

import { createContext, useContext, useEffect, useState } from 'react'

type Theme = 'dark' | 'light' | 'system'

interface ThemeContextType {
  theme: Theme
  setTheme: (theme: Theme) => void
  resolvedTheme: 'dark' | 'light'
}

const ThemeContext = createContext<ThemeContextType | undefined>(undefined)

export function ThemeProvider({
  children,
  defaultTheme = 'system',
  storageKey = 'theme',
}: {
  children: React.ReactNode
  defaultTheme?: Theme
  storageKey?: string
}) {
  const [theme, setTheme] = useState<Theme>(defaultTheme)
  const [resolvedTheme, setResolvedTheme] = useState<'dark' | 'light'>('light')

  useEffect(() => {
    const stored = localStorage.getItem(storageKey) as Theme | null
    if (stored) setTheme(stored)
  }, [storageKey])

  useEffect(() => {
    const root = document.documentElement
    root.classList.remove('light', 'dark')

    const resolved = theme === 'system'
      ? (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light')
      : theme

    root.classList.add(resolved)
    setResolvedTheme(resolved)

    // Update meta theme-color for mobile browsers
    const metaThemeColor = document.querySelector('meta[name="theme-color"]')
    if (metaThemeColor) {
      metaThemeColor.setAttribute('content', resolved === 'dark' ? '#09090b' : '#ffffff')
    }
  }, [theme])

  return (
    <ThemeContext.Provider value={{
      theme,
      setTheme: (newTheme) => {
        localStorage.setItem(storageKey, newTheme)
        setTheme(newTheme)
      },
      resolvedTheme,
    }}>
      {children}
    </ThemeContext.Provider>
  )
}

export const useTheme = () => {
  const context = useContext(ThemeContext)
  if (!context) throw new Error('useTheme must be used within ThemeProvider')
  return context
}

// components/ThemeToggle.tsx
import { Moon, Sun } from 'lucide-react'
import { useTheme } from '@/providers/ThemeProvider'

export function ThemeToggle() {
  const { resolvedTheme, setTheme } = useTheme()

  return (
    <Button
      variant="ghost"
      size="icon"
      onClick={() => setTheme(resolvedTheme === 'dark' ? 'light' : 'dark')}
    >
      <Sun className="size-5 rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
      <Moon className="absolute size-5 rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
      <span className="sr-only">Toggle theme</span>
    </Button>
  )
}
typescript
// providers/ThemeProvider.tsx - 针对v4简化实现
'use client'

import { createContext, useContext, useEffect, useState } from 'react'

type Theme = 'dark' | 'light' | 'system'

interface ThemeContextType {
  theme: Theme
  setTheme: (theme: Theme) => void
  resolvedTheme: 'dark' | 'light'
}

const ThemeContext = createContext<ThemeContextType | undefined>(undefined)

export function ThemeProvider({
  children,
  defaultTheme = 'system',
  storageKey = 'theme',
}: {
  children: React.ReactNode
  defaultTheme?: Theme
  storageKey?: string
}) {
  const [theme, setTheme] = useState<Theme>(defaultTheme)
  const [resolvedTheme, setResolvedTheme] = useState<'dark' | 'light'>('light')

  useEffect(() => {
    const stored = localStorage.getItem(storageKey) as Theme | null
    if (stored) setTheme(stored)
  }, [storageKey])

  useEffect(() => {
    const root = document.documentElement
    root.classList.remove('light', 'dark')

    const resolved = theme === 'system'
      ? (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light')
      : theme

    root.classList.add(resolved)
    setResolvedTheme(resolved)

    // 更新移动端浏览器的meta主题色
    const metaThemeColor = document.querySelector('meta[name="theme-color"]')
    if (metaThemeColor) {
      metaThemeColor.setAttribute('content', resolved === 'dark' ? '#09090b' : '#ffffff')
    }
  }, [theme])

  return (
    <ThemeContext.Provider value={{
      theme,
      setTheme: (newTheme) => {
        localStorage.setItem(storageKey, newTheme)
        setTheme(newTheme)
      },
      resolvedTheme,
    }}>
      {children}
    </ThemeContext.Provider>
  )
}

export const useTheme = () => {
  const context = useContext(ThemeContext)
  if (!context) throw new Error('useTheme must be used within ThemeProvider')
  return context
}

// components/ThemeToggle.tsx
import { Moon, Sun } from 'lucide-react'
import { useTheme } from '@/providers/ThemeProvider'

export function ThemeToggle() {
  const { resolvedTheme, setTheme } = useTheme()

  return (
    <Button
      variant="ghost"
      size="icon"
      onClick={() => setTheme(resolvedTheme === 'dark' ? 'light' : 'dark')}
    >
      <Sun className="size-5 rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
      <Moon className="absolute size-5 rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
      <span className="sr-only">Toggle theme</span>
    </Button>
  )
}

Utility Functions

工具函数

typescript
// lib/utils.ts
import { type ClassValue, clsx } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

// Focus ring utility
export const focusRing = cn(
  "focus-visible:outline-none focus-visible:ring-2",
  "focus-visible:ring-ring focus-visible:ring-offset-2",
);

// Disabled utility
export const disabled = "disabled:pointer-events-none disabled:opacity-50";
typescript
// lib/utils.ts
import { type ClassValue, clsx } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

// 焦点环工具类
export const focusRing = cn(
  "focus-visible:outline-none focus-visible:ring-2",
  "focus-visible:ring-ring focus-visible:ring-offset-2",
);

// 禁用状态工具类
export const disabled = "disabled:pointer-events-none disabled:opacity-50";

Advanced v4 Patterns

v4高级模式

Custom Utilities with 
@utility

使用
@utility
定义自定义工具类

Define reusable custom utilities:
css
/* Custom utility for decorative lines */
@utility line-t {
  @apply relative before:absolute before:top-0 before:-left-[100vw] before:h-px before:w-[200vw] before:bg-gray-950/5 dark:before:bg-white/10;
}

/* Custom utility for text gradients */
@utility text-gradient {
  @apply bg-gradient-to-r from-primary to-accent bg-clip-text text-transparent;
}
定义可复用的自定义工具类：
css
/* 用于装饰线条的自定义工具类 */
@utility line-t {
  @apply relative before:absolute before:top-0 before:-left-[100vw] before:h-px before:w-[200vw] before:bg-gray-950/5 dark:before:bg-white/10;
}

/* 用于文字渐变的自定义工具类 */
@utility text-gradient {
  @apply bg-gradient-to-r from-primary to-accent bg-clip-text text-transparent;
}

Theme Modifiers

主题修饰符

css
/* Use @theme inline when referencing other CSS variables */
@theme inline {
  --font-sans: var(--font-inter), system-ui;
}

/* Use @theme static to always generate CSS variables (even when unused) */
@theme static {
  --color-brand: oklch(65% 0.15 240);
}

/* Import with theme options */
@import "tailwindcss" theme(static);
css
// 引用其他CSS变量时使用inline主题
@theme inline {
  --font-sans: var(--font-inter), system-ui;
}

// 使用static主题确保始终生成CSS变量（即使未被引用）
@theme static {
  --color-brand: oklch(65% 0.15 240);
}

// 导入时指定主题选项
@import "tailwindcss" theme(static);

Namespace Overrides

命名空间覆盖

css
@theme {
  /* Clear all default colors and define your own */
  --color-*: initial;
  --color-white: #fff;
  --color-black: #000;
  --color-primary: oklch(45% 0.2 260);
  --color-secondary: oklch(65% 0.15 200);

  /* Clear ALL defaults for a minimal setup */
  /* --*: initial; */
}
css
@theme {
  /* 清除所有默认颜色并自定义 */
  --color-*: initial;
  --color-white: #fff;
  --color-black: #000;
  --color-primary: oklch(45% 0.2 260);
  --color-secondary: oklch(65% 0.15 200);

  /* 清除所有默认值以实现极简配置 */
  /* --*: initial; */
}

Semi-transparent Color Variants

半透明颜色变体

css
@theme {
  /* Use color-mix() for alpha variants */
  --color-primary-50: color-mix(in oklab, var(--color-primary) 5%, transparent);
  --color-primary-100: color-mix(
    in oklab,
    var(--color-primary) 10%,
    transparent
  );
  --color-primary-200: color-mix(
    in oklab,
    var(--color-primary) 20%,
    transparent
  );
}
css
@theme {
  /* 使用color-mix()生成透明度变体 */
  --color-primary-50: color-mix(in oklab, var(--color-primary) 5%, transparent);
  --color-primary-100: color-mix(
    in oklab,
    var(--color-primary) 10%,
    transparent
  );
  --color-primary-200: color-mix(
    in oklab,
    var(--color-primary) 20%,
    transparent
  );
}

Container Queries

容器查询

css
@theme {
  --container-xs: 20rem;
  --container-sm: 24rem;
  --container-md: 28rem;
  --container-lg: 32rem;
}
css
@theme {
  --container-xs: 20rem;
  --container-sm: 24rem;
  --container-md: 28rem;
  --container-lg: 32rem;
}

v3 to v4 Migration Checklist

v3到v4迁移检查清单

  • Replace 
    tailwind.config.ts
    with CSS 
    @theme
    block
  • Change 
    @tailwind base/components/utilities
    to 
    @import "tailwindcss"
  • Move color definitions to 
    @theme { --color-*: value }
  • Replace 
    darkMode: "class"
    with 
    @custom-variant dark
  • Move 
    @keyframes
    inside 
    @theme
    blocks (ensures keyframes output with theme)
  • Replace 
    require("tailwindcss-animate")
    with native CSS animations
  • Update 
    h-10 w-10
    to 
    size-10
    (new utility)
  • Remove 
    forwardRef
    (React 19 passes ref as prop)
  • Consider OKLCH colors for better color perception
  • Replace custom plugins with 
    @utility
    directives
  • 用CSS 
    @theme
    块替换
    tailwind.config.ts
  • 将
    @tailwind base/components/utilities
    改为
    @import "tailwindcss"
  • 将颜色定义迁移到
    @theme { --color-*: value }
  • 用
    @custom-variant dark
    替换
    darkMode: "class"
  • 将
    @keyframes
    移到
    @theme
    块内（确保主题引用时输出关键帧）
  • 用原生CSS动画替换
    require("tailwindcss-animate")
  • 将
    h-10 w-10
    更新为
    size-10
    （新工具类）
  • 移除
    forwardRef
    （React 19将ref作为属性传递）
  • 考虑使用OKLCH色彩模型提升色彩感知一致性
  • 用
    @utility
    指令替换自定义插件

Best Practices

最佳实践

Do's

推荐做法

  • Use 
    @theme
    blocks     - CSS-first configuration is v4's core pattern
  • Use OKLCH colors - Better perceptual uniformity than HSL
  • Compose with CVA - Type-safe variants
  • Use semantic tokens - 
    bg-primary
    not 
    bg-blue-500
  • Use 
    size-*
     - New shorthand for 
    w-* h-*
  • Add accessibility - ARIA attributes, focus states
  • 使用
    @theme
    块     - CSS优先配置是v4的核心模式
  • 使用OKLCH颜色 - 比HSL具有更优的感知一致性
  • 用CVA组合样式 - 类型安全的变体管理
  • 使用语义化令牌 - 用
    bg-primary
    而非
    bg-blue-500
  • 使用
    size-*
    工具类     - 
    w-* h-*
    的新简写形式
  • 添加无障碍支持 - ARIA属性、焦点状态

Don'ts

不推荐做法

  • Don't use 
    tailwind.config.ts
     - Use CSS 
    @theme
    instead
  • Don't use 
    @tailwind
    directives     - Use 
    @import "tailwindcss"
  • Don't use 
    forwardRef
     - React 19 passes ref as prop
  • Don't use arbitrary values - Extend 
    @theme
    instead
  • Don't hardcode colors - Use semantic tokens
  • Don't forget dark mode - Test both themes
  • 不要使用
    tailwind.config.ts
     - 改用CSS 
    @theme
  • 不要使用
    @tailwind
    指令     - 改用
    @import "tailwindcss"
  • 不要使用
    forwardRef
     - React 19将ref作为属性传递
  • 不要使用任意值 - 扩展
    @theme
    实现自定义
  • 不要硬编码颜色 - 使用语义化令牌
  • 不要忽略深色模式 - 测试两种主题效果

Resources

参考资源