first commit

src/components/ui/Button.tsx

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+import React from 'react';
+
+type ButtonVariant = 'primary' | 'secondary' | 'success' | 'danger' | 'warning' | 'info' | 'outline' | 'link';
+
+interface ButtonProps {
+  children: React.ReactNode;
+  type?: 'button' | 'submit' | 'reset';
+  onClick?: (e: React.MouseEvent<HTMLButtonElement>) => void;
+  variant?: ButtonVariant;
+  size?: 'sm' | 'md' | 'lg';
+  disabled?: boolean;
+  className?: string;
+  icon?: React.ReactNode;
+}
+
+export function Button({
+  children,
+  type = 'button',
+  onClick,
+  variant = 'primary',
+  size = 'md',
+  disabled = false,
+  className = '',
+  icon,
+}: ButtonProps) {
+  const baseClasses = 'inline-flex items-center justify-center font-medium rounded-md focus:outline-none transition-colors';
+  
+  // Definir classes de variante
+  const variantClasses = {
+    primary: 'bg-blue-600 text-white hover:bg-blue-700 focus:ring-2 focus:ring-offset-2 focus:ring-blue-500',
+    secondary: 'bg-gray-600 text-white hover:bg-gray-700 focus:ring-2 focus:ring-offset-2 focus:ring-gray-500',
+    success: 'bg-green-600 text-white hover:bg-green-700 focus:ring-2 focus:ring-offset-2 focus:ring-green-500',
+    danger: 'bg-red-600 text-white hover:bg-red-700 focus:ring-2 focus:ring-offset-2 focus:ring-red-500',
+    warning: 'bg-yellow-500 text-white hover:bg-yellow-600 focus:ring-2 focus:ring-offset-2 focus:ring-yellow-400',
+    info: 'bg-blue-400 text-white hover:bg-blue-500 focus:ring-2 focus:ring-offset-2 focus:ring-blue-300',
+    outline: 'bg-white text-gray-700 border border-gray-300 hover:bg-gray-50 focus:ring-2 focus:ring-offset-2 focus:ring-blue-500',
+    link: 'bg-transparent text-blue-600 hover:text-blue-800 hover:underline focus:ring-0',
+  };
+  
+  // Definir classes de tamanho
+  const sizeClasses = {
+    sm: 'px-2.5 py-1.5 text-xs',
+    md: 'px-4 py-2 text-sm',
+    lg: 'px-6 py-3 text-base',
+  };
+  
+  // Definir classes de estado desabilitado
+  const disabledClasses = 'opacity-50 cursor-not-allowed';
+  
+  const buttonClasses = [
+    baseClasses,
+    variantClasses[variant],
+    sizeClasses[size],
+    disabled ? disabledClasses : '',
+    className,
+  ].join(' ');
+  
+  return (
+    <button
+      type={type}
+      onClick={onClick}
+      disabled={disabled}
+      className={buttonClasses}
+    >
+      {icon && <span className="mr-2">{icon}</span>}
+      {children}
+    </button>
+  );
+}