Rewrote turborepo. Hopefully this is a bit more clean & easy to understand for me.

packages/ui/src/card.tsx

@@ -1,27 +1,91 @@
-import { type JSX } from "react";
+import * as React from "react";
+import { cn } from "@/lib/utils";
 
-export function Card({
-  className,
-  title,
-  children,
-  href,
-}: {
-  className?: string;
-  title: string;
-  children: React.ReactNode;
-  href: string;
-}): JSX.Element {
+function Card({ className, ...props }: React.ComponentProps<"div">) {
   return (
-    <a
-      className={className}
-      href={`${href}?utm_source=create-turbo&utm_medium=basic&utm_campaign=create-turbo"`}
-      rel="noopener noreferrer"
-      target="_blank"
-    >
-      <h2>
-        {title} <span>-&gt;</span>
-      </h2>
-      <p>{children}</p>
-    </a>
+    <div
+      data-slot="card"
+      className={cn(
+        "bg-card text-card-foreground flex flex-col gap-6 rounded-xl border py-6 shadow-sm",
+        className,
+      )}
+      {...props}
+    />
   );
 }
+
+function CardHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-header"
+      className={cn(
+        "@container/card-header grid auto-rows-min grid-rows-[auto_auto] items-start gap-1.5 px-6 has-data-[slot=card-action]:grid-cols-[1fr_auto] [.border-b]:pb-6",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+function CardTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-title"
+      className={cn("leading-none font-semibold", className)}
+      {...props}
+    />
+  );
+}
+
+function CardDescription({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-description"
+      className={cn("text-muted-foreground text-sm", className)}
+      {...props}
+    />
+  );
+}
+
+function CardAction({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-action"
+      className={cn(
+        "col-start-2 row-span-2 row-start-1 self-start justify-self-end",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+function CardContent({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-content"
+      className={cn("px-6", className)}
+      {...props}
+    />
+  );
+}
+
+function CardFooter({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-footer"
+      className={cn("flex items-center px-6 [.border-t]:pt-6", className)}
+      {...props}
+    />
+  );
+}
+
+export {
+  Card,
+  CardHeader,
+  CardFooter,
+  CardTitle,
+  CardAction,
+  CardDescription,
+  CardContent,
+};