Installation

src/components/ui/button.tsx

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

// Deliver's button (deliverwebsite.com .btn): hover sweeps a light across the face,
// press pushes it 2px down onto its edge.
const DELIVER_BUTTON =
  "group relative isolate gap-1.5 overflow-hidden rounded-lg font-semibold transition-all duration-200 active:translate-y-0.5 active:duration-75 before:absolute before:inset-0 before:-z-10 before:-translate-x-full before:bg-linear-105 before:from-transparent before:from-35% before:to-transparent before:to-65% before:transition-transform before:duration-1400 hover:before:translate-x-full";

// shadcn/ui button, plus Deliver's brand and line buttons and the "ink" pill the navbar demos use.
const buttonVariants = cva(
  "inline-flex shrink-0 items-center justify-center gap-2 whitespace-nowrap rounded-full text-sm font-medium transition-colors outline-none focus-visible:ring-3 focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
  {
    variants: {
      variant: {
        default: "bg-primary text-primary-foreground hover:bg-primary/90",
        brand: cn(DELIVER_BUTTON, "bg-key text-white shadow-brand before:via-white/25 hover:bg-key-hover active:shadow-brand-pressed"),
        line: cn(DELIVER_BUTTON, "bg-line-face text-foreground shadow-line before:via-foreground/15 hover:bg-line-face-hover active:shadow-line-pressed"),
        ink: "bg-ink text-white hover:bg-primary",
        inverse: "bg-white text-ink hover:bg-white/85",
        outline: "border bg-background hover:bg-muted",
        ghost: "hover:bg-muted",
      },
      size: {
        default: "h-10 px-5",
        sm: "h-8 px-3.5 text-xs",
        lg: "h-12 px-6 text-base",
        icon: "size-10",
      },
    },
    defaultVariants: { variant: "default", size: "default" },
  },
);

type ButtonProps = React.ComponentProps<"button"> & VariantProps<typeof buttonVariants> & { asChild?: boolean };

export function Button({ className, variant, size, asChild = false, ...props }: ButtonProps) {
  const Component = asChild ? Slot : "button";
  return <Component data-slot="button" className={cn(buttonVariants({ variant, size, className }))} {...props} />;
}

export { buttonVariants };