Interfaces, engineered.

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081import type * as React from "react";
import { Slot } from "@radix-ui/react-slot";
import { cva, type VariantProps } from "class-variance-authority";

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

export const buttonVariants = cva(
  [
    "inline-flex select-none items-center justify-center gap-2 whitespace-nowrap",
    "rounded-vexa-md text-sm font-medium",
    "transition-[color,background-color,border-color,box-shadow]",
    "duration-[var(--vexa-duration-fast)] ease-[var(--vexa-ease-standard)]",
    "outline-none focus-visible:ring-2 focus-visible:ring-vexa-ring",
    "focus-visible:ring-offset-2 focus-visible:ring-offset-vexa-background",
    "disabled:pointer-events-none disabled:opacity-50",
    "aria-[busy=true]:pointer-events-none aria-[busy=true]:cursor-progress",
    "[&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
  ],
  {
    variants: {
      variant: {
        primary:
          "bg-vexa-primary text-vexa-primary-foreground hover:bg-vexa-primary/90 active:bg-vexa-primary/95",
        secondary:
          "border border-vexa-border bg-vexa-secondary text-vexa-secondary-foreground hover:bg-vexa-accent active:bg-vexa-accent",
        outline:
          "border border-vexa-input bg-transparent text-vexa-foreground hover:bg-vexa-accent hover:text-vexa-accent-foreground active:bg-vexa-accent",
        ghost:
          "bg-transparent text-vexa-foreground hover:bg-vexa-accent hover:text-vexa-accent-foreground active:bg-vexa-accent",
        danger:
          "bg-vexa-danger text-vexa-danger-foreground hover:bg-vexa-danger/90 active:bg-vexa-danger/95",
        link: "bg-transparent text-vexa-focus underline-offset-4 hover:underline focus-visible:ring-offset-0",
      },
      size: {
        sm: "h-8 px-3 text-xs",
        md: "h-10 px-4",
        lg: "h-12 px-6 text-base",
      },
    },
    defaultVariants: {
      variant: "primary",
      size: "md",
    },
  },
);

export interface ButtonProps
  extends React.ComponentProps<"button">, VariantProps<typeof buttonVariants> {
  /**
   * Render the button's styles onto its single child element instead of a
   * native `<button>` (e.g. to style a link). The child owns its own
   * semantics; ensure it remains keyboard-operable.
   */
  asChild?: boolean;
}

/**
 * Button — triggers an action or submits a form.
 *
 * RSC-safe: contains no state or effects, so it renders on the server. Attach
 * `onClick` from a Client Component when interactivity is required. Refs are
 * accepted as a regular prop (React 19).
 */
export function Button({
  className,
  variant,
  size,
  asChild = false,
  type,
  ...props
}: ButtonProps) {
  const Comp = asChild ? Slot : "button";
  return (
    <Comp
      data-slot="button"
      className={cn(buttonVariants({ variant, size }), className)}
      type={asChild ? undefined : (type ?? "button")}
      {...props}
    />
  );
}