frontend/src/components/ui/button.jsx

import React from "react";
import { cn } from "@/lib/utils";

const base =
  "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-indigo-500 focus-visible:ring-offset-2 disabled:opacity-50 disabled:pointer-events-none";

const variants = {
  default: "bg-indigo-600 text-white hover:bg-indigo-700 shadow-sm",
  outline:
    "border border-slate-200 bg-white text-slate-900 hover:bg-slate-50",
  ghost: "bg-transparent text-slate-700 hover:bg-slate-100",
};

const sizes = {
  default: "h-10 px-4 py-2",
  sm: "h-8 px-3 text-xs",
  lg: "h-11 px-6 text-sm",
  icon: "h-9 w-9",
};

export function Button({
  className,
  variant = "default",
  size = "default",
  ...props
}) {
  return (
    <button
      className={cn(
        base,
        variants[variant] || variants.default,
        sizes[size] || sizes.default,
        className
      )}
      {...props}
    />
  );
}