Add landing page with shadcn/ui and dark mode

app/page.tsx

@@ -1,65 +1,92 @@
-import Image from "next/image";
+import { Globe, Search, Shield, Activity } from "lucide-react";
+import {
+  Card,
+  CardHeader,
+  CardTitle,
+  CardDescription,
+} from "@/components/ui/card";
+import { Badge } from "@/components/ui/badge";
+import { ThemeToggle } from "@/components/theme-toggle";
+import { DomainSearchForm } from "@/components/domain-search-form";
+
+const features = [
+  {
+    icon: Search,
+    title: "DNS Records",
+    description:
+      "Query A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, and SRV records for any domain.",
+  },
+  {
+    icon: Shield,
+    title: "WHOIS Lookup",
+    description:
+      "View registrar, expiration dates, nameservers, and registration details.",
+  },
+  {
+    icon: Activity,
+    title: "Domain Monitoring",
+    description:
+      "Track DNS changes over time, get alerts when records change, and monitor availability.",
+  },
+];
 
 export default function Home() {
   return (
-    <div className="flex min-h-screen items-center justify-center bg-zinc-50 font-sans dark:bg-black">
-      <main className="flex min-h-screen w-full max-w-3xl flex-col items-center justify-between py-32 px-16 bg-white dark:bg-black sm:items-start">
-        <Image
-          className="dark:invert"
-          src="/next.svg"
-          alt="Next.js logo"
-          width={100}
-          height={20}
-          priority
-        />
-        <div className="flex flex-col items-center gap-6 text-center sm:items-start sm:text-left">
-          <h1 className="max-w-xs text-3xl font-semibold leading-10 tracking-tight text-black dark:text-zinc-50">
-            To get started, edit the page.tsx file.
+    <div className="flex min-h-screen flex-col">
+      {/* Header */}
+      <header className="border-b">
+        <div className="container mx-auto flex h-14 items-center justify-between px-4">
+          <div className="flex items-center gap-2">
+            <Globe className="size-5 text-primary" />
+            <span className="text-lg font-semibold tracking-tight">
+              VectorDNS
+            </span>
+          </div>
+          <ThemeToggle />
+        </div>
+      </header>
+
+      {/* Hero */}
+      <main className="flex flex-1 flex-col">
+        <section className="flex flex-col items-center justify-center gap-6 px-4 py-24 text-center md:py-32">
+          <Badge variant="secondary" className="text-sm">
+            Free DNS Toolkit
+          </Badge>
+          <h1 className="max-w-2xl text-4xl font-bold tracking-tight sm:text-5xl">
+            DNS Lookup, WHOIS &amp;{" "}
+            <span className="text-primary">Domain Monitoring</span>
           </h1>
-          <p className="max-w-md text-lg leading-8 text-zinc-600 dark:text-zinc-400">
-            Looking for a starting point or more instructions? Head over to{" "}
-            <a
-              href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-              className="font-medium text-zinc-950 dark:text-zinc-50"
-            >
-              Templates
-            </a>{" "}
-            or the{" "}
-            <a
-              href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-              className="font-medium text-zinc-950 dark:text-zinc-50"
-            >
-              Learning
-            </a>{" "}
-            center.
+          <p className="max-w-lg text-lg text-muted-foreground">
+            Search nameservers, check domain availability, and track DNS record
+            changes — all in one place.
           </p>
-        </div>
-        <div className="flex flex-col gap-4 text-base font-medium sm:flex-row">
-          <a
-            className="flex h-12 w-full items-center justify-center gap-2 rounded-full bg-foreground px-5 text-background transition-colors hover:bg-[#383838] dark:hover:bg-[#ccc] md:w-[158px]"
-            href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            <Image
-              className="dark:invert"
-              src="/vercel.svg"
-              alt="Vercel logomark"
-              width={16}
-              height={16}
-            />
-            Deploy Now
-          </a>
-          <a
-            className="flex h-12 w-full items-center justify-center rounded-full border border-solid border-black/[.08] px-5 transition-colors hover:border-transparent hover:bg-black/[.04] dark:border-white/[.145] dark:hover:bg-[#1a1a1a] md:w-[158px]"
-            href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            Documentation
-          </a>
-        </div>
+          <DomainSearchForm />
+        </section>
+
+        {/* Features */}
+        <section className="border-t bg-muted/40 px-4 py-16">
+          <div className="container mx-auto">
+            <div className="grid gap-6 sm:grid-cols-2 lg:grid-cols-3">
+              {features.map((feature) => (
+                <Card key={feature.title} className="bg-card">
+                  <CardHeader>
+                    <feature.icon className="mb-2 size-8 text-primary" />
+                    <CardTitle>{feature.title}</CardTitle>
+                    <CardDescription>{feature.description}</CardDescription>
+                  </CardHeader>
+                </Card>
+              ))}
+            </div>
+          </div>
+        </section>
       </main>
+
+      {/* Footer */}
+      <footer className="border-t py-6">
+        <div className="container mx-auto px-4 text-center text-sm text-muted-foreground">
+          <p>&copy; {new Date().getFullYear()} VectorDNS</p>
+        </div>
+      </footer>
     </div>
   );
 }