Phase 2

Base app architecture:

    Route groups for customer, staff and owner.
* Reusable design system with around 20 UI components.
* Complete Prisma schema.
* Authentication with email/password and Google.
* Role and permission model.
* Protected routes.
* Clean separation between features, services, components and shared utilities.

src/components/ui/card.tsx

@@ -0,0 +1,28 @@
+import type { HTMLAttributes } from "react";
+import { cn } from "@/lib/utils/cn";
+
+/**
+ * The single most-repeated visual pattern across the templates: a white
+ * surface, hairline border, jumbo radius. See docs/implementation-plan.md
+ * §7 ("Cards" — strongest, most reusable element across the set).
+ */
+export function Card({ className, ...props }: HTMLAttributes<HTMLDivElement>) {
+  return (
+    <div
+      className={cn("rounded-jumbo border border-line bg-white shadow-sm", className)}
+      {...props}
+    />
+  );
+}
+
+export function CardHeader({ className, ...props }: HTMLAttributes<HTMLDivElement>) {
+  return <div className={cn("p-6 pb-0", className)} {...props} />;
+}
+
+export function CardContent({ className, ...props }: HTMLAttributes<HTMLDivElement>) {
+  return <div className={cn("p-6", className)} {...props} />;
+}
+
+export function CardFooter({ className, ...props }: HTMLAttributes<HTMLDivElement>) {
+  return <div className={cn("flex items-center gap-3 p-6 pt-0", className)} {...props} />;
+}