ТЗ: Модульная дизайн-система на Radix UI Primitives, Tailwind CSS v4 и TypeScript

// components/ui/Button.tsx
import * as React from 'react'
import { Slot } from '@radix-ui/react-slot'
import { cva, type VariantProps } from 'class-variance-authority'

export const buttonVariants = cva(
  'inline-flex items-center justify-center gap-2 rounded-xl text-sm font-semibold transition-all focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent-violet/50 disabled:pointer-events-none disabled:opacity-50 cursor-pointer active:scale-98',
  {
    variants: {
      variant: {
        primary: 'bg-accent-violet hover:bg-accent-violet/90 text-white shadow-md shadow-accent-violet/20',
        secondary: 'bg-bg-elevated hover:bg-bg-elevated/80 text-text-primary border border-border',
        destructive: 'bg-rose-500 hover:bg-rose-600 text-white shadow-sm',
        ghost: 'hover:bg-bg-elevated text-text-muted hover:text-text-primary'
      },
      size: {
        sm: 'h-8 px-3 text-xs',
        md: 'h-10 px-4 py-2',
        lg: 'h-12 px-6 text-base'
      }
    },
    defaultVariants: {
      variant: 'primary',
      size: 'md'
    }
  }
)

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

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