diff --git a/csv-table-hub-main/src/routes/auth.tsx b/csv-table-hub-main/src/routes/auth.tsx
index 64f253c..b86b4c1 100644
--- a/csv-table-hub-main/src/routes/auth.tsx
+++ b/csv-table-hub-main/src/routes/auth.tsx
@@ -1,42 +1,89 @@
-import { createFileRoute } from "@tanstack/react-router";
+import { createFileRoute, Link, useNavigate } from "@tanstack/react-router";
+import { useState } from "react";
 import { Button } from "@/components/ui/button";
-import { Card, CardContent, CardFooter, CardHeader, CardTitle } from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 
+// Cosmetic sign-in per gitreverse.com/designs/csv-joyride-sync-lovable-app.
+// Backend has no user auth (X-API-Key only) — see docs/BUG_REPORT.md BUG-006/035.
+// Submit does not authenticate; it just routes to /. Wire a real /api/auth/login
+// before treating this as more than a mockup.
 export const Route = createFileRoute("/auth")({
   head: () => ({
     meta: [
-      { title: "CSV Migrator — Upload without authentication" },
-      { name: "description", content: "Authentication is disabled. Upload CSV files directly to your backend." },
+      { title: "Sign in — CSV Migrator" },
+      { name: "description", content: "Sign in to CSV Migrator." },
     ],
   }),
   component: AuthPage,
 });
 
 function AuthPage() {
+  const navigate = useNavigate();
+  const [email, setEmail] = useState("");
+  const [password, setPassword] = useState("");
+
   return (
-    <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-background via-background to-muted/30 px-6">
-      <Card className="w-full max-w-lg">
-        <CardHeader>
-          <CardTitle>Authentication disabled</CardTitle>
-        </CardHeader>
-        <CardContent className="space-y-4">
-          <p className="text-sm text-muted-foreground">
-            This Lovable frontend has been configured to use a PostgreSQL-backed backend API directly, so user sign-in is not required.
-          </p>
+    <div
+      className="min-h-screen flex items-center justify-center bg-white px-4"
+      style={{ fontFamily: '"CameraPlainVariable", ui-sans-serif, system-ui, sans-serif' }}
+    >
+      <div className="w-full max-w-sm space-y-8">
+        <h1 className="text-2xl font-medium text-[#0F172B]">Sign in</h1>
+
+        <form
+          className="space-y-5"
+          onSubmit={(e) => {
+            e.preventDefault();
+            // ponytail: cosmetic only, no auth backend. Replace with real login when it exists.
+            navigate({ to: "/" });
+          }}
+        >
           <div className="space-y-2">
-            <Label>Next step</Label>
-            <p className="text-sm text-muted-foreground">
-              Go back to the home screen and upload CSV files directly. Configure <code className="rounded bg-muted px-1">VITE_API_BASE</code> to point to your backend.
-            </p>
+            <Label htmlFor="email" className="text-[#0F172B]">
+              Email
+            </Label>
+            <Input
+              id="email"
+              type="email"
+              autoComplete="email"
+              required
+              value={email}
+              onChange={(e) => setEmail(e.target.value)}
+              className="h-10 rounded-lg border-[#E2E8F0] shadow-sm focus-visible:ring-[#62748E]"
+            />
           </div>
-        </CardContent>
-        <CardFooter>
-          <Button asChild>
-            <a href="/">Back to upload</a>
+
+          <div className="space-y-2">
+            <Label htmlFor="password" className="text-[#0F172B]">
+              Password
+            </Label>
+            <Input
+              id="password"
+              type="password"
+              autoComplete="current-password"
+              required
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              className="h-10 rounded-lg border-[#E2E8F0] shadow-sm focus-visible:ring-[#62748E]"
+            />
+          </div>
+
+          <Button
+            type="submit"
+            className="w-full h-10 rounded-lg shadow-sm bg-[#0F172B] text-[#F8FAFC] hover:bg-[#0F172B]/90"
+          >
+            Sign in
           </Button>
-        </CardFooter>
-      </Card>
+        </form>
+
+        <p className="text-sm text-center text-[#62748E]">
+          Need an account?{" "}
+          <Link to="/auth" className="text-[#62748E] hover:text-[#0F172B] underline underline-offset-2">
+            Sign up
+          </Link>
+        </p>
+      </div>
     </div>
   );
 }