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 gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50',
  {
    variants: {
      variant: {
        default: 'bg-accent-violet text-white hover:bg-accent-violet/90',
        secondary: 'bg-bg-elevated text-text-primary hover:bg-bg-elevated/70 border border-border',
        outline: 'border border-border bg-transparent hover:bg-bg-elevated',
        ghost: 'hover:bg-bg-elevated',
        cyan: 'bg-accent-cyan text-white hover:bg-accent-cyan/90',
      },
      size: {
        default: 'h-10 px-4 py-2',
        sm: 'h-8 px-3 text-xs',
        lg: 'h-11 px-6',
        icon: 'h-9 w-9',
      },
    },
    defaultVariants: { variant: 'default', size: 'default' },
  }
);

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

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