import React from 'react';

interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: 'primary' | 'secondary' | 'outline' | 'ghost';
  size?: 'sm' | 'md' | 'lg' | 'xl';
  isLoading?: boolean;
}

export const Button: React.FC<ButtonProps> = ({
  children,
  variant = 'primary',
  size = 'md',
  isLoading,
  className = '',
  ...props
}) => {
  const baseStyles = "inline-flex items-center justify-center font-medium transition-all duration-300 focus:outline-none focus:ring-2 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed";

  const variants = {
    primary: "bg-brand-black text-white hover:bg-gray-800 focus:ring-brand-black",
    secondary: "bg-[#B9CF32] text-white hover:bg-[#a5bd2e] focus:ring-[#B9CF32]",
    outline: "border border-brand-black text-brand-black hover:bg-gray-50 focus:ring-brand-black",
    ghost: "text-brand-black hover:bg-gray-100 hover:text-gray-900"
  };

  const sizes = {
    sm: "text-xs px-3 py-1.5 rounded-sm",
    md: "text-sm px-5 py-2.5 rounded-sm",
    lg: "text-base px-8 py-3 rounded-sm",
    xl: "text-lg px-10 py-4 rounded-md font-semibold"
  };

  return (
    <button
      className={`${baseStyles} ${variants[variant]} ${sizes[size]} ${className}`}
      disabled={isLoading || props.disabled}
      {...props}
    >
      {isLoading ? (
        <svg className="animate-spin -ml-1 mr-2 h-4 w-4 text-current" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
          <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
          <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
        </svg>
      ) : null}
      {children}
    </button>
  );
};