frontend/src/components/ui/button.tsx

import * as React from "react"
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-md text-sm font-medium ring-offset-background 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-zinc-900 text-zinc-50 hover:bg-zinc-800 dark:bg-zinc-50 dark:text-zinc-900",
        destructive: "bg-red-500 text-zinc-50 hover:bg-red-600",
        outline: "border border-zinc-200 bg-white hover:bg-zinc-100 dark:border-zinc-800 dark:bg-zinc-950 dark:hover:bg-zinc-800",
        secondary: "bg-zinc-100 text-zinc-900 hover:bg-zinc-200 dark:bg-zinc-800 dark:text-zinc-50",
        ghost: "hover:bg-zinc-100 hover:text-zinc-900 dark:hover:bg-zinc-800",
        link: "text-zinc-900 underline-offset-4 hover:underline dark:text-zinc-50",
      },
      size: {
        default: "h-10 px-4 py-2",
        sm: "h-9 rounded-md px-3",
        lg: "h-11 rounded-md px-8",
        icon: "h-10 w-10",
      },
    },
    defaultVariants: {
      variant: "default",
      size: "default",
    },
  }
)

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

const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant, size, ...props }, ref) => {
    return (
      <button className={cn(buttonVariants({ variant, size, className }))} ref={ref} {...props} />
    )
  }
)
Button.displayName = "Button"
export { Button, buttonVariants }