import { Button as ButtonPrimitive } from "@base-ui/react/button"
import { cva, type VariantProps } from "class-variance-authority"
import { cn } from "@/lib/utils"

const buttonVariants = cva(
  "inline-flex items-center justify-center whitespace-nowrap rounded-lg text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50",
  {
    variants: {
      variant: {
        default: "bg-primary text-primary-foreground shadow-xs hover:bg-primary/90",
        outline: "border border-input bg-background shadow-xs hover:bg-accent hover:text-accent-foreground",
        ghost: "hover:bg-accent hover:text-accent-foreground",
        link: "text-primary underline-offset-4 hover:underline",
        destructive: "bg-destructive text-white shadow-xs hover:bg-destructive/90",
      },
      size: {
        default: "h-9 px-4 py-2",
        sm: "h-8 rounded-md px-3 text-xs",
        lg: "h-10 rounded-md px-6",
        icon: "size-9",
      },
    },
    defaultVariants: { variant: "default", size: "default" },
  }
)

interface ButtonProps extends ButtonPrimitive.Props, VariantProps<typeof buttonVariants> {}

function Button({ className, variant, size, ...props }: ButtonProps) {
  return (
    <ButtonPrimitive
      data-slot="button"
      className={cn(buttonVariants({ variant, size, className }))}
      {...props}
    />
  )
}

export { Button, buttonVariants }

import { clsx, type ClassValue } from "clsx"
import { twMerge } from "tailwind-merge"

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

Need component? → Check Base UI first
├─ Base UI has it? → Use @base-ui/react/[component]
├─ Complex composition needed? → Use Radix Slot for polymorphism
├─ Rich text editing? → Use Plate.js
└─ Form validation? → Use react-hook-form + zod + shadcn Form

Style variation only? → Add variant to existing cva()
├─ Different behavior/structure? → Create new component
├─ Different primitive needed? → Create new component
└─ Compound component pattern? → Create subcomponents (Root, Trigger, Content)

// Inline start (before text)
<Button>
  <Icon data-icon="inline-start" />
  Label
</Button>

// Inline end (after text)
<Button>
  Label
  <Icon data-icon="inline-end" />
</Button>

// Add to interactive elements for mobile
className="min-h-11 min-w-11"

// Standard component structure
import { Primitive } from "@base-ui/react/[primitive]"
import { cva, type VariantProps } from "class-variance-authority"
import { cn } from "@/lib/utils"

// 1. Define variants with cva
const componentVariants = cva("base-classes", {
  variants: { /* ... */ },
  defaultVariants: { /* ... */ },
})

// 2. Define props interface
interface ComponentProps 
  extends Primitive.Props, 
  VariantProps<typeof componentVariants> {}

// 3. Create component with data-slot
function Component({ className, variant, ...props }: ComponentProps) {
  return (
    <Primitive
      data-slot="component"
      className={cn(componentVariants({ variant, className }))}
      {...props}
    />
  )
}

// 4. Export component AND variants
export { Component, componentVariants }