src/components/ui/button.tsx

import * as React from 'react';
import { Slot } from '@radix-ui/react-slot';
import { cva, type VariantProps } from 'class-variance-authority';
import { cn } from '@/lib/utils';

const buttonVariants = cva(
  'inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-xl text-sm font-semibold transition-all duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0 active:scale-[0.98]',
  {
    variants: {
      variant: {
        default: 'bg-zinc-900 text-white shadow-sm hover:bg-zinc-800 focus-visible:ring-zinc-500 dark:bg-white dark:text-zinc-900 dark:hover:bg-zinc-100',
        primary: 'bg-emerald-600 text-white shadow-sm hover:bg-emerald-500 focus-visible:ring-emerald-500',
        destructive: 'bg-red-600 text-white shadow-sm hover:bg-red-500 focus-visible:ring-red-500',
        outline: 'border border-zinc-200 bg-white text-zinc-900 shadow-sm hover:bg-zinc-50 hover:border-zinc-300 dark:border-zinc-700 dark:bg-zinc-900 dark:text-zinc-100 dark:hover:bg-zinc-800',
        secondary: 'bg-zinc-100 text-zinc-900 shadow-sm hover:bg-zinc-200 dark:bg-zinc-800 dark:text-zinc-100 dark:hover:bg-zinc-700',
        ghost: 'text-zinc-600 hover:bg-zinc-100 hover:text-zinc-900 dark:text-zinc-400 dark:hover:bg-zinc-800 dark:hover:text-zinc-100',
        link: 'text-emerald-600 underline-offset-4 hover:underline dark:text-emerald-400',
      },
      size: {
        default: 'h-10 px-4 py-2',
        sm: 'h-8 rounded-lg px-3 text-xs',
        lg: 'h-12 rounded-xl px-6 text-base',
        xl: 'h-14 rounded-2xl px-8 text-base',
        icon: 'h-10 w-10',
        'icon-sm': 'h-8 w-8 rounded-lg',
      },
    },
    defaultVariants: {
      variant: 'default',
      size: 'default',
    },
  }
);

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

const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant, size, asChild = false, ...props }, ref) => {
    const Comp = asChild ? Slot : 'button';
    return (
      <Comp
        className={cn(buttonVariants({ variant, size, className }))}
        ref={ref}
        {...props}
      />
    );
  }
);
Button.displayName = 'Button';

export { Button, buttonVariants };