diff --git a/app/components/shell.tsx b/app/components/shell.tsx
new file mode 100644
index 0000000..8c29657
--- /dev/null
+++ b/app/components/shell.tsx
@@ -0,0 +1,110 @@
+"use client";
+
+import Link from "next/link";
+import { usePathname, useRouter } from "next/navigation";
+import type { ReactNode } from "react";
+
+const NAV = [
+  { href: "/", label: "Gutscheine" },
+  { href: "/vouchers/new", label: "Neu" },
+  { href: "/contacts", label: "Kontakte" },
+  { href: "/settings", label: "Einstellungen" },
+] as const;
+
+function isActive(pathname: string, href: string) {
+  if (href === "/") return pathname === "/";
+  return pathname === href || pathname.startsWith(`${href}/`);
+}
+
+export default function Shell({ children }: { children: ReactNode }) {
+  const pathname = usePathname();
+  const router = useRouter();
+
+  async function logout() {
+    await fetch("/api/auth/logout", { method: "POST" }).catch(() => {});
+    router.push("/login");
+    router.refresh();
+  }
+
+  return (
+    <div className="min-h-dvh md:flex">
+      <aside className="hidden w-60 shrink-0 flex-col border-r border-line bg-white px-4 py-6 md:flex">
+        <p className="flex items-center gap-2.5 px-2 text-[15px] font-semibold tracking-tight">
+          <span
+            aria-hidden="true"
+            className="grid h-8 w-8 place-items-center rounded-[10px] bg-brand-100 text-[15px] font-bold text-brand-800"
+          >
+            G
+          </span>
+          Gutscheintracker
+        </p>
+        <nav aria-label="Hauptmenü" className="mt-7 flex flex-col gap-1">
+          {NAV.map((item) => (
+            <Link
+              key={item.href}
+              href={item.href}
+              aria-current={isActive(pathname, item.href) ? "page" : undefined}
+              className={`rounded-[10px] px-3 py-2 text-sm font-medium transition-colors ${
+                isActive(pathname, item.href)
+                  ? "bg-brand-50 text-brand-800"
+                  : "text-ink hover:bg-wash"
+              }`}
+            >
+              {item.label}
+            </Link>
+          ))}
+        </nav>
+        <button
+          type="button"
+          onClick={logout}
+          className="mt-auto rounded-[10px] px-3 py-2 text-left text-sm font-medium text-muted transition-colors hover:bg-wash hover:text-ink"
+        >
+          Abmelden
+        </button>
+      </aside>
+
+      <div className="min-w-0 flex-1">
+        <header className="sticky top-0 flex items-center justify-between border-b border-line bg-white/95 px-4 py-3 backdrop-blur md:hidden">
+          <p className="flex items-center gap-2 text-sm font-semibold tracking-tight">
+            <span
+              aria-hidden="true"
+              className="grid h-7 w-7 place-items-center rounded-lg bg-brand-100 text-[13px] font-bold text-brand-800"
+            >
+              G
+            </span>
+            Gutscheintracker
+          </p>
+          <button
+            type="button"
+            onClick={logout}
+            className="rounded-lg px-3 py-1.5 text-sm font-medium text-muted hover:text-ink"
+          >
+            Abmelden
+          </button>
+        </header>
+
+        <div className="mx-auto w-full max-w-3xl px-4 pb-28 pt-6 md:px-6 md:pb-12">
+          {children}
+        </div>
+
+        <nav
+          aria-label="Hauptmenü"
+          className="fixed inset-x-0 bottom-0 grid grid-cols-4 border-t border-line bg-white/95 backdrop-blur md:hidden"
+        >
+          {NAV.map((item) => (
+            <Link
+              key={item.href}
+              href={item.href}
+              aria-current={isActive(pathname, item.href) ? "page" : undefined}
+              className={`px-1 py-2.5 text-center text-xs font-medium ${
+                isActive(pathname, item.href) ? "text-brand-700" : "text-muted"
+              }`}
+            >
+              {item.label}
+            </Link>
+          ))}
+        </nav>
+      </div>
+    </div>
+  );
+}
diff --git a/app/contacts/page.tsx b/app/contacts/page.tsx
index 2bdefa3..61694aa 100644
--- a/app/contacts/page.tsx
+++ b/app/contacts/page.tsx
@@ -1,10 +1,14 @@
 "use client";
 import { useEffect, useState } from "react";
 import Link from "next/link";
+import Shell from "../components/shell";
 import { validateContact } from "@/lib/contacts";
 
 type Contact = { id: number; name: string; email: string | null; telegramChatId: string | null };
 
+const inputClass =
+  "mt-1.5 h-11 w-full rounded-field border border-line bg-white px-3.5 text-sm text-ink placeholder:text-muted/60";
+
 export default function ContactsPage() {
   const [contacts, setContacts] = useState<Contact[]>([]);
   const [name, setName] = useState("");
@@ -39,34 +43,78 @@ export default function ContactsPage() {
   }
 
   return (
-    <main className="mx-auto max-w-xl space-y-4 p-6">
-      <Link href="/" className="text-sm underline">← Zurück</Link>
-      <h1 className="text-xl font-bold">Kontakte</h1>
-      <form onSubmit={onSubmit} className="space-y-3" noValidate>
-        <div>
-          <label htmlFor="name" className="block text-sm font-medium">Name</label>
-          <input id="name" value={name} onChange={(e) => setName(e.target.value)} className="mt-1 w-full rounded border px-3 py-2" />
+    <Shell>
+      <Link href="/" className="text-sm font-medium text-muted hover:text-ink">
+        ← Zurück
+      </Link>
+      <h1 className="mt-2 text-2xl font-semibold tracking-tight">Kontakte</h1>
+      <p className="mt-1 text-sm text-muted">Mindestens E-Mail oder Telegram pro Kontakt.</p>
+      <form onSubmit={onSubmit} className="mt-5 rounded-card border border-line bg-white p-5 sm:p-6" noValidate>
+        <div className="grid gap-4 sm:grid-cols-2">
+          <div className="sm:col-span-2">
+            <label htmlFor="name" className="block text-[13px] font-semibold">Name</label>
+            <input
+              id="name"
+              value={name}
+              onChange={(e) => setName(e.target.value)}
+              autoComplete="off"
+              placeholder="z. B. Mama"
+              aria-invalid={errors.includes("name")}
+              className={`${inputClass} ${errors.includes("name") ? "border-danger" : ""}`}
+            />
+          </div>
+          <div>
+            <label htmlFor="email" className="block text-[13px] font-semibold">E-Mail</label>
+            <input
+              id="email"
+              type="email"
+              value={email}
+              onChange={(e) => setEmail(e.target.value)}
+              autoComplete="email"
+              placeholder="name@beispiel.de"
+              aria-invalid={errors.includes("email")}
+              className={`${inputClass} ${errors.includes("email") ? "border-danger" : ""}`}
+            />
+          </div>
+          <div>
+            <label htmlFor="telegramChatId" className="block text-[13px] font-semibold">Telegram-Chat-ID</label>
+            <input
+              id="telegramChatId"
+              value={telegramChatId}
+              onChange={(e) => setTelegramChatId(e.target.value)}
+              autoComplete="off"
+              placeholder="z. B. 123456789"
+              className={inputClass}
+            />
+          </div>
         </div>
-        <div>
-          <label htmlFor="email" className="block text-sm font-medium">E-Mail</label>
-          <input id="email" type="email" value={email} onChange={(e) => setEmail(e.target.value)} className="mt-1 w-full rounded border px-3 py-2" />
-        </div>
-        <div>
-          <label htmlFor="telegramChatId" className="block text-sm font-medium">Telegram-Chat-ID</label>
-          <input id="telegramChatId" value={telegramChatId} onChange={(e) => setTelegramChatId(e.target.value)} className="mt-1 w-full rounded border px-3 py-2" />
-        </div>
-        {errors.length > 0 && <p className="text-sm text-red-600">Ungültig: {errors.join(", ")}</p>}
-        <button type="submit" className="rounded bg-black px-4 py-2 text-white">Hinzufügen</button>
+        {errors.length > 0 && (
+          <p role="alert" className="mt-4 rounded-field bg-danger/10 px-3.5 py-2.5 text-sm font-medium text-danger">
+            Bitte prüfe die Eingaben: {errors.join(", ")}
+          </p>
+        )}
+        <button
+          type="submit"
+          className="mt-5 h-12 w-full rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99] sm:w-auto sm:px-8"
+        >
+          Hinzufügen
+        </button>
       </form>
-      <ul className="divide-y">
-        {contacts.map((c) => (
-          <li key={c.id} className="py-2 text-sm">
-            <span className="font-medium">{c.name}</span>
-            {c.email && <span> · {c.email}</span>}
-            {c.telegramChatId && <span> · Telegram {c.telegramChatId}</span>}
-          </li>
-        ))}
-      </ul>
-    </main>
+      <section aria-label="Gespeicherte Kontakte" className="mt-5 rounded-card border border-line bg-white px-5 py-2">
+        {contacts.length === 0 ? (
+          <p className="py-3 text-sm text-muted">Noch keine Kontakte angelegt.</p>
+        ) : (
+          <ul className="divide-y divide-line">
+            {contacts.map((c) => (
+              <li key={c.id} className="py-3 text-sm">
+                <span className="font-semibold">{c.name}</span>
+                {c.email && <span className="text-muted"> · {c.email}</span>}
+                {c.telegramChatId && <span className="text-muted"> · Telegram {c.telegramChatId}</span>}
+              </li>
+            ))}
+          </ul>
+        )}
+      </section>
+    </Shell>
   );
 }
diff --git a/app/globals.css b/app/globals.css
new file mode 100644
index 0000000..63b96ab
--- /dev/null
+++ b/app/globals.css
@@ -0,0 +1,41 @@
+@import "tailwindcss";
+
+@theme {
+  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
+
+  --color-brand-50: #eef5f0;
+  --color-brand-100: #dcebe1;
+  --color-brand-600: #397b58;
+  --color-brand-700: #306e4e;
+  --color-brand-800: #285a41;
+
+  --color-ink: #202823;
+  --color-muted: #5f6d63;
+  --color-line: #dde5de;
+  --color-wash: #f2f5f2;
+  --color-danger: #9c3838;
+
+  --radius-card: 16px;
+  --radius-field: 10px;
+}
+
+body {
+  background-color: var(--color-wash);
+  color: var(--color-ink);
+  font-family: var(--font-sans);
+  -webkit-font-smoothing: antialiased;
+}
+
+:where(a, button, input, select, textarea):focus-visible {
+  outline: 3px solid rgb(57 123 88 / 0.35);
+  outline-offset: 2px;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    transition: none !important;
+    animation: none !important;
+  }
+}
diff --git a/app/layout.tsx b/app/layout.tsx
index 907f255..0183c17 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -1,10 +1,17 @@
 import type { ReactNode } from "react";
+import { Geist } from "next/font/google";
+import "./globals.css";
 
-export const metadata = { title: "Gutscheintracker" };
+const geist = Geist({ subsets: ["latin"], display: "swap" });
+
+export const metadata = {
+  title: "Gutscheintracker",
+  description: "Gutscheine verwalten und rechtzeitig an das Ablaufdatum erinnern.",
+};
 
 export default function RootLayout({ children }: { children: ReactNode }) {
   return (
-    <html lang="de">
+    <html lang="de" className={geist.className}>
       <body>{children}</body>
     </html>
   );
diff --git a/app/login/page.tsx b/app/login/page.tsx
index 995f2bd..3a17c66 100644
--- a/app/login/page.tsx
+++ b/app/login/page.tsx
@@ -33,27 +33,73 @@ export default function LoginPage() {
   }
 
   return (
-    <main style={{ maxWidth: 360, margin: "4rem auto", padding: "0 1rem" }}>
-      <h1>Anmelden</h1>
-      <form onSubmit={onSubmit}>
-        <label>
-          Benutzer
-          <input value={user} onChange={(e) => setUser(e.target.value)} autoComplete="username" />
-        </label>
-        <label>
-          Passwort
-          <input
-            type="password"
-            value={password}
-            onChange={(e) => setPassword(e.target.value)}
-            autoComplete="current-password"
-          />
-        </label>
-        {error && <p role="alert">{error}</p>}
-        <button type="submit" disabled={loading}>
-          {loading ? "…" : "Anmelden"}
-        </button>
-      </form>
+    <main className="grid min-h-dvh place-items-center bg-wash px-5 py-9">
+      <div className="w-full max-w-[420px]">
+        <p className="mb-6 flex items-center gap-2.5 text-base font-semibold tracking-tight">
+          <span
+            aria-hidden="true"
+            className="grid h-9 w-9 place-items-center rounded-[11px] bg-brand-100 text-[17px] font-bold text-brand-800"
+          >
+            G
+          </span>
+          Gutscheintracker
+        </p>
+        <section
+          aria-labelledby="login-title"
+          className="rounded-card border border-line bg-white p-8 shadow-[0_16px_38px_rgba(32,55,39,0.07)]"
+        >
+          <h1 id="login-title" className="text-[27px] font-semibold leading-snug tracking-tight">
+            Willkommen zurück
+          </h1>
+          <p className="mb-7 mt-2 text-sm leading-relaxed text-muted">
+            Melde dich mit eurem gemeinsamen Haushaltszugang an.
+          </p>
+          <form onSubmit={onSubmit} className="grid gap-[18px]" noValidate>
+            <div className="grid gap-[7px]">
+              <label htmlFor="user" className="text-[13px] font-semibold">
+                Benutzername
+              </label>
+              <input
+                id="user"
+                value={user}
+                onChange={(e) => setUser(e.target.value)}
+                autoComplete="username"
+                placeholder="haushalt"
+                className="h-[46px] rounded-field border border-line bg-white px-3.5 text-sm text-ink placeholder:text-muted/70"
+              />
+            </div>
+            <div className="grid gap-[7px]">
+              <label htmlFor="password" className="text-[13px] font-semibold">
+                Passwort
+              </label>
+              <input
+                id="password"
+                type="password"
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                autoComplete="current-password"
+                placeholder="Dein Passwort"
+                className="h-[46px] rounded-field border border-line bg-white px-3.5 text-sm text-ink placeholder:text-muted/70"
+              />
+            </div>
+            {error && (
+              <p role="alert" className="rounded-field bg-danger/10 px-3.5 py-2.5 text-sm font-medium text-danger">
+                {error}
+              </p>
+            )}
+            <button
+              type="submit"
+              disabled={loading}
+              className="h-[47px] rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99] disabled:opacity-60"
+            >
+              {loading ? "Wird geprüft …" : "Anmelden"}
+            </button>
+          </form>
+          <p className="mt-[19px] text-center text-xs text-muted">
+            Privater Zugang für euren Haushalt
+          </p>
+        </section>
+      </div>
     </main>
   );
 }
diff --git a/app/page.tsx b/app/page.tsx
index e37eb6d..7720bb6 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -1,7 +1,8 @@
 import Link from "next/link";
 import { Suspense } from "react";
+import Shell from "./components/shell";
 import { getDb } from "@/lib/db";
-import { getVoucherStatus } from "@/lib/voucher-status";
+import { getVoucherStatus, type VoucherStatus } from "@/lib/voucher-status";
 import { formatEuro, isExpiringSoon } from "@/lib/vouchers";
 
 const FILTERS = [
@@ -12,13 +13,25 @@ const FILTERS = [
   { key: "eingeloest", label: "Eingelöst" },
 ] as const;
 
+const STATUS_STYLE: Record<VoucherStatus, string> = {
+  aktiv: "bg-brand-50 text-brand-800",
+  abgelaufen: "bg-danger/10 text-danger",
+  eingeloest: "bg-wash text-muted",
+};
+
+function statusLabel(s: VoucherStatus) {
+  if (s === "aktiv") return "Aktiv";
+  if (s === "abgelaufen") return "Abgelaufen";
+  return "Eingelöst";
+}
+
 function Skeleton() {
   return (
-    <ul aria-label="lädt">
+    <ul aria-label="lädt" className="grid gap-3">
       {[0, 1, 2].map((i) => (
-        <li key={i} className="animate-pulse rounded border p-4">
-          <div className="h-4 w-1/3 bg-gray-200" />
-          <div className="mt-2 h-3 w-1/4 bg-gray-100" />
+        <li key={i} className="animate-pulse rounded-card border border-line bg-white p-5">
+          <div className="h-4 w-1/3 rounded bg-line" />
+          <div className="mt-2 h-3 w-1/4 rounded bg-wash" />
         </li>
       ))}
     </ul>
@@ -38,26 +51,38 @@ async function VoucherList({ filter }: { filter: string }) {
   });
   if (filtered.length === 0) {
     return (
-      <div className="rounded border p-8 text-center">
-        <p>Keine Gutscheine gefunden.</p>
-        <Link href="/vouchers/new" className="mt-4 inline-block rounded bg-black px-4 py-2 text-white">
+      <div className="rounded-card border border-line bg-white p-10 text-center">
+        <p className="text-sm text-muted">Keine Gutscheine gefunden.</p>
+        <Link
+          href="/vouchers/new"
+          className="mt-4 inline-block rounded-field bg-brand-600 px-4 py-2.5 text-sm font-semibold text-white transition-colors hover:bg-brand-700"
+        >
           Gutschein anlegen
         </Link>
       </div>
     );
   }
   return (
-    <ul className="space-y-2">
-      {filtered.map((v) => (
-        <li key={v.id} className="rounded border p-4">
-          <Link href={`/vouchers/${v.id}`} className="font-medium underline">
-            {v.name}
-          </Link>
-          <p className="text-sm text-gray-600">
-            {v.anbieter} · {formatEuro(v.restCents)} / {formatEuro(v.wertCents)} · {getVoucherStatus(v)}
-          </p>
-        </li>
-      ))}
+    <ul className="grid gap-3">
+      {filtered.map((v) => {
+        const s = getVoucherStatus(v);
+        return (
+          <li key={v.id} className="rounded-card border border-line bg-white p-5 transition-shadow hover:shadow-[0_8px_24px_rgba(32,55,39,0.08)]">
+            <div className="flex items-start justify-between gap-3">
+              <Link href={`/vouchers/${v.id}`} className="text-[15px] font-semibold tracking-tight hover:text-brand-700">
+                {v.name}
+              </Link>
+              <span className={`shrink-0 rounded-full px-2.5 py-1 text-xs font-semibold ${STATUS_STYLE[s]}`}>
+                {statusLabel(s)}
+              </span>
+            </div>
+            <p className="mt-1.5 text-sm text-muted">
+              {v.anbieter} · {formatEuro(v.restCents)} von {formatEuro(v.wertCents)}
+              {v.ablaufdatum ? ` · bis ${v.ablaufdatum.toLocaleDateString("de-DE")}` : ""}
+            </p>
+          </li>
+        );
+      })}
     </ul>
   );
 }
@@ -65,20 +90,30 @@ async function VoucherList({ filter }: { filter: string }) {
 export default async function Home({ searchParams }: { searchParams: Promise<{ filter?: string }> }) {
   const { filter = "" } = await searchParams;
   return (
-    <main className="mx-auto max-w-2xl space-y-4 p-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-xl font-bold">Gutscheine</h1>
-        <Link href="/vouchers/new" className="rounded bg-black px-4 py-2 text-white">
+    <Shell>
+      <div className="mb-5 flex items-end justify-between gap-3">
+        <div>
+          <h1 className="text-2xl font-semibold tracking-tight">Gutscheine</h1>
+          <p className="mt-1 text-sm text-muted">Alle Gutscheine eures Haushalts im Blick.</p>
+        </div>
+        <Link
+          href="/vouchers/new"
+          className="shrink-0 rounded-field bg-brand-600 px-4 py-2.5 text-sm font-semibold text-white transition-colors hover:bg-brand-700"
+        >
           Neu
         </Link>
       </div>
-      <nav className="flex gap-2" aria-label="Filter">
+      <nav className="mb-5 flex flex-wrap gap-2" aria-label="Filter">
         {FILTERS.map((f) => (
           <Link
             key={f.key}
             href={f.key ? `/?filter=${f.key}` : "/"}
             aria-current={filter === f.key ? "page" : undefined}
-            className={`rounded border px-3 py-1 text-sm ${filter === f.key ? "bg-black text-white" : ""}`}
+            className={`rounded-full border px-3.5 py-1.5 text-[13px] font-medium transition-colors ${
+              filter === f.key
+                ? "border-brand-700 bg-brand-600 text-white"
+                : "border-line bg-white text-ink hover:border-brand-600 hover:text-brand-700"
+            }`}
           >
             {f.label}
           </Link>
@@ -87,6 +122,6 @@ export default async function Home({ searchParams }: { searchParams: Promise<{ f
       <Suspense fallback={<Skeleton />}>
         <VoucherList filter={filter} />
       </Suspense>
-    </main>
+    </Shell>
   );
 }
diff --git a/app/settings/page.tsx b/app/settings/page.tsx
index e35bd25..9d9a1e9 100644
--- a/app/settings/page.tsx
+++ b/app/settings/page.tsx
@@ -1,39 +1,50 @@
 import Link from "next/link";
+import Shell from "../components/shell";
 import { getDb } from "@/lib/db";
 import { DEFAULT_TAGE_VORHER } from "@/lib/settings";
 import { TestButtons } from "./test-buttons";
 
 export const dynamic = "force-dynamic";
 
+function Card({ title, children }: { title: string; children: React.ReactNode }) {
+  return (
+    <section className="rounded-card border border-line bg-white p-5">
+      <h2 className="text-[15px] font-semibold tracking-tight">{title}</h2>
+      <div className="mt-2 text-sm text-muted">{children}</div>
+    </section>
+  );
+}
+
 export default async function SettingsPage() {
   const db = getDb();
   const last = await db.notificationLog.findFirst({ orderBy: { sentAt: "desc" } });
   return (
-    <main className="mx-auto max-w-xl space-y-4 p-6">
-      <Link href="/" className="text-sm underline">← Zurück</Link>
-      <h1 className="text-xl font-bold">Einstellungen</h1>
-      <section className="rounded border p-4">
-        <h2 className="font-medium">Standard-Erinnerungstage</h2>
-        <p className="text-sm text-gray-600">Neue Gutscheine erhalten diese Erinnerungsregeln: {DEFAULT_TAGE_VORHER.join(", ")} Tage vorher.</p>
-      </section>
-      <TestButtons />
-      <section className="rounded border p-4 text-sm">
-        <h2 className="font-medium">Letzter Cron-Lauf</h2>
-        {last ? (
-          <p>
-            {last.sentAt.toLocaleString("de-DE")} · {last.kanal} an {last.empfaenger} · {last.status}
-            {last.fehler ? ` · Fehler: ${last.fehler}` : ""}
-          </p>
-        ) : (
-          <p>Noch keine Benachrichtigung versendet.</p>
-        )}
-      </section>
-      <section className="rounded border p-4 text-sm text-gray-600">
-        <h2 className="font-medium text-black">Konfiguration (.env)</h2>
-        <p>SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASS, MAIL_FROM, TELEGRAM_BOT_TOKEN, CRON_SECRET, APP_URL.</p>
-        <h2 className="mt-2 font-medium text-black">Backup</h2>
-        <p>SQLite-Datei sichern: Volume <code>gutschein-data</code> bzw. Datei <code>/data/gutscheine.db</code> regelmäßig kopieren.</p>
-      </section>
-    </main>
+    <Shell>
+      <Link href="/" className="text-sm font-medium text-muted hover:text-ink">
+        ← Zurück
+      </Link>
+      <h1 className="mt-2 text-2xl font-semibold tracking-tight">Einstellungen</h1>
+      <p className="mt-1 text-sm text-muted">Erinnerungen und Benachrichtigungen prüfen.</p>
+      <div className="mt-5 grid gap-4">
+        <Card title="Standard-Erinnerungstage">
+          <p>Neue Gutscheine erhalten diese Erinnerungsregeln: {DEFAULT_TAGE_VORHER.join(", ")} Tage vorher.</p>
+        </Card>
+        <TestButtons />
+        <Card title="Letzter Cron-Lauf">
+          {last ? (
+            <p>
+              {last.sentAt.toLocaleString("de-DE")} · {last.kanal} an {last.empfaenger} · {last.status}
+              {last.fehler ? ` · Fehler: ${last.fehler}` : ""}
+            </p>
+          ) : (
+            <p>Noch keine Benachrichtigung versendet.</p>
+          )}
+        </Card>
+        <Card title="Konfiguration und Backup">
+          <p>SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASS, MAIL_FROM, TELEGRAM_BOT_TOKEN, CRON_SECRET, APP_URL.</p>
+          <p className="mt-2">SQLite-Datei sichern: Volume <code>gutschein-data</code> bzw. Datei <code>/data/gutscheine.db</code> regelmäßig kopieren.</p>
+        </Card>
+      </div>
+    </Shell>
   );
 }
diff --git a/app/settings/test-buttons.tsx b/app/settings/test-buttons.tsx
index c398506..4f92774 100644
--- a/app/settings/test-buttons.tsx
+++ b/app/settings/test-buttons.tsx
@@ -29,19 +29,43 @@ export function TestButtons() {
   }
 
   return (
-    <section className="space-y-3 rounded border p-4">
-      <h2 className="font-medium">Versand testen</h2>
-      <div>
-        <label htmlFor="mail" className="block text-sm font-medium">E-Mail-Empfänger</label>
-        <input id="mail" value={mail} onChange={(e) => setMail(e.target.value)} className="mt-1 w-full rounded border px-3 py-2" />
+    <section className="rounded-card border border-line bg-white p-5">
+      <h2 className="text-[15px] font-semibold tracking-tight">Versand testen</h2>
+      <div className="mt-3 grid gap-4 sm:grid-cols-2">
+        <div>
+          <label htmlFor="mail" className="block text-[13px] font-semibold">E-Mail-Empfänger</label>
+          <input
+            id="mail"
+            value={mail}
+            onChange={(e) => setMail(e.target.value)}
+            className="mt-1.5 h-11 w-full rounded-field border border-line bg-white px-3.5 text-sm text-ink"
+          />
+          <button
+            type="button"
+            onClick={testMail}
+            className="mt-2 h-10 w-full rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99]"
+          >
+            Test-Mail senden
+          </button>
+        </div>
+        <div>
+          <label htmlFor="chatId" className="block text-[13px] font-semibold">Telegram-Chat-ID</label>
+          <input
+            id="chatId"
+            value={chatId}
+            onChange={(e) => setChatId(e.target.value)}
+            className="mt-1.5 h-11 w-full rounded-field border border-line bg-white px-3.5 text-sm text-ink"
+          />
+          <button
+            type="button"
+            onClick={testTelegram}
+            className="mt-2 h-10 w-full rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99]"
+          >
+            Test-Telegram senden
+          </button>
+        </div>
       </div>
-      <button type="button" onClick={testMail} className="rounded bg-black px-4 py-2 text-white">Test-Mail senden</button>
-      <div>
-        <label htmlFor="chatId" className="block text-sm font-medium">Telegram-Chat-ID</label>
-        <input id="chatId" value={chatId} onChange={(e) => setChatId(e.target.value)} className="mt-1 w-full rounded border px-3 py-2" />
-      </div>
-      <button type="button" onClick={testTelegram} className="rounded bg-black px-4 py-2 text-white">Test-Telegram senden</button>
-      {result && <p role="status" className="text-sm">{result}</p>}
+      {result && <p role="status" className="mt-3 text-sm text-muted">{result}</p>}
     </section>
   );
 }
diff --git a/app/vouchers/[id]/page.tsx b/app/vouchers/[id]/page.tsx
index 48dafbe..7bd85c1 100644
--- a/app/vouchers/[id]/page.tsx
+++ b/app/vouchers/[id]/page.tsx
@@ -1,6 +1,7 @@
 "use client";
 import { use, useEffect, useState } from "react";
 import Link from "next/link";
+import Shell from "../../components/shell";
 import { formatEuro } from "@/lib/vouchers";
 import { getVoucherStatus } from "@/lib/voucher-status";
 
@@ -18,6 +19,15 @@ type Voucher = {
   contacts?: { contact: { id: number; name: string; email: string | null; telegramChatId: string | null } }[];
 };
 
+function Row({ label, children }: { label: string; children: React.ReactNode }) {
+  return (
+    <div className="grid grid-cols-[120px_1fr] gap-3 py-2.5">
+      <dt className="text-sm text-muted">{label}</dt>
+      <dd className="text-sm font-medium">{children}</dd>
+    </div>
+  );
+}
+
 export default function VoucherDetailPage({ params }: { params: Promise<{ id: string }> }) {
   const { id } = use(params);
   const [v, setV] = useState<Voucher | null>(null);
@@ -41,37 +51,61 @@ export default function VoucherDetailPage({ params }: { params: Promise<{ id: st
     if (res.ok) setV(await res.json());
   }
 
-  if (loading) return <main className="mx-auto max-w-xl animate-pulse space-y-2 p-6"><div className="h-6 w-1/2 bg-gray-200" /><div className="h-4 w-1/3 bg-gray-100" /></main>;
+  if (loading)
+    return (
+      <Shell>
+        <div className="animate-pulse rounded-card border border-line bg-white p-6">
+          <div className="h-6 w-1/2 rounded bg-line" />
+          <div className="mt-2 h-4 w-1/3 rounded bg-wash" />
+        </div>
+      </Shell>
+    );
   if (error || !v)
     return (
-      <main className="mx-auto max-w-xl space-y-4 p-6">
-        <p>{error}</p>
-        <Link href="/" className="underline">Zurück zur Liste</Link>
-      </main>
+      <Shell>
+        <div className="rounded-card border border-line bg-white p-8 text-center">
+          <p className="text-sm text-muted">{error}</p>
+          <Link href="/" className="mt-4 inline-block text-sm font-semibold text-brand-700 underline">
+            Zurück zur Liste
+          </Link>
+        </div>
+      </Shell>
     );
 
+  const status = getVoucherStatus({
+    status: v.status,
+    ablaufdatum: v.ablaufdatum ? new Date(v.ablaufdatum) : null,
+  });
+
   return (
-    <main className="mx-auto max-w-xl space-y-3 p-6">
-      <Link href="/" className="text-sm underline">← Zurück</Link>
-      <h1 className="text-xl font-bold">{v.name}</h1>
-      <dl className="space-y-1 text-sm">
-        <div><dt className="font-medium">Anbieter</dt><dd>{v.anbieter}</dd></div>
-        <div><dt className="font-medium">Wert</dt><dd>{formatEuro(v.wertCents)}</dd></div>
-        <div><dt className="font-medium">Rest</dt><dd>{formatEuro(v.restCents)}</dd></div>
-        <div><dt className="font-medium">Status</dt><dd>{getVoucherStatus({ status: v.status, ablaufdatum: v.ablaufdatum ? new Date(v.ablaufdatum) : null })}</dd></div>
-        {v.ablaufdatum && <div><dt className="font-medium">Ablaufdatum</dt><dd>{new Date(v.ablaufdatum).toLocaleDateString("de-DE")}</dd></div>}
-        {v.codeText && <div><dt className="font-medium">Code</dt><dd>{v.codeText}</dd></div>}
-        {v.kategorie && <div><dt className="font-medium">Kategorie</dt><dd>{v.kategorie}</dd></div>}
-        {v.notiz && <div><dt className="font-medium">Notiz</dt><dd>{v.notiz}</dd></div>}
-        {v.contacts && v.contacts.length > 0 && (
-          <div><dt className="font-medium">Empfänger</dt><dd>{v.contacts.map((c) => c.contact.name).join(", ")}</dd></div>
+    <Shell>
+      <Link href="/" className="text-sm font-medium text-muted hover:text-ink">
+        ← Zurück
+      </Link>
+      <h1 className="mt-2 text-2xl font-semibold tracking-tight">{v.name}</h1>
+      <section aria-label="Details" className="mt-4 divide-y divide-line rounded-card border border-line bg-white px-5 py-2">
+        <Row label="Anbieter">{v.anbieter}</Row>
+        <Row label="Wert">{formatEuro(v.wertCents)}</Row>
+        <Row label="Restguthaben">{formatEuro(v.restCents)}</Row>
+        <Row label="Status">{status === "aktiv" ? "Aktiv" : status === "abgelaufen" ? "Abgelaufen" : "Eingelöst"}</Row>
+        {v.ablaufdatum && (
+          <Row label="Ablaufdatum">{new Date(v.ablaufdatum).toLocaleDateString("de-DE")}</Row>
         )}
-      </dl>
+        {v.codeText && <Row label="Code">{v.codeText}</Row>}
+        {v.kategorie && <Row label="Kategorie">{v.kategorie}</Row>}
+        {v.notiz && <Row label="Notiz">{v.notiz}</Row>}
+        {v.contacts && v.contacts.length > 0 && (
+          <Row label="Empfänger">{v.contacts.map((c) => c.contact.name).join(", ")}</Row>
+        )}
+      </section>
       {v.status !== "eingeloest" && (
-        <button onClick={redeem} className="rounded bg-black px-4 py-2 text-white">
+        <button
+          onClick={redeem}
+          className="mt-4 h-12 w-full rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99] sm:w-auto sm:px-8"
+        >
           Einlösen
         </button>
       )}
-    </main>
+    </Shell>
   );
 }
diff --git a/app/vouchers/new/page.tsx b/app/vouchers/new/page.tsx
index 00cfaac..3a469ac 100644
--- a/app/vouchers/new/page.tsx
+++ b/app/vouchers/new/page.tsx
@@ -1,21 +1,26 @@
 "use client";
 import { useEffect, useState } from "react";
 import { useRouter } from "next/navigation";
+import Link from "next/link";
+import Shell from "../../components/shell";
 import { validateVoucher } from "@/lib/vouchers";
 
 // Erweiterbar für Task 5 (Kontakte): zusätzliches Feld contactIds + <ContactSelect />
 // ohne bestehende Felder anzufassen — Felder als Konfiguration belassen.
 const FIELDS = [
-  { name: "name", label: "Name", type: "text" },
-  { name: "anbieter", label: "Anbieter", type: "text" },
-  { name: "wertCents", label: "Wert (Cent)", type: "number" },
-  { name: "restCents", label: "Rest (Cent, leer = Wert)", type: "number" },
-  { name: "ablaufdatum", label: "Ablaufdatum", type: "date" },
-  { name: "codeText", label: "Code", type: "text" },
-  { name: "kategorie", label: "Kategorie", type: "text" },
-  { name: "notiz", label: "Notiz", type: "text" },
+  { name: "name", label: "Name", type: "text", placeholder: "z. B. Therme Erding" },
+  { name: "anbieter", label: "Anbieter", type: "text", placeholder: "z. B. Therme Erding" },
+  { name: "wertCents", label: "Wert (Cent)", type: "number", placeholder: "5000" },
+  { name: "restCents", label: "Rest (Cent, leer = Wert)", type: "number", placeholder: "" },
+  { name: "ablaufdatum", label: "Ablaufdatum", type: "date", placeholder: "" },
+  { name: "codeText", label: "Code", type: "text", placeholder: "Code oder Nummer" },
+  { name: "kategorie", label: "Kategorie", type: "text", placeholder: "z. B. Erlebnis" },
+  { name: "notiz", label: "Notiz", type: "text", placeholder: "Optionale Notiz" },
 ] as const;
 
+const inputClass =
+  "mt-1.5 h-11 w-full rounded-field border border-line bg-white px-3.5 text-sm text-ink placeholder:text-muted/60";
+
 export default function NewVoucherPage() {
   const router = useRouter();
   const [values, setValues] = useState<Record<string, string>>({});
@@ -69,27 +74,37 @@ export default function NewVoucherPage() {
   }
 
   return (
-    <main className="mx-auto max-w-xl space-y-4 p-6">
-      <h1 className="text-xl font-bold">Gutschein anlegen</h1>
-      <form onSubmit={onSubmit} className="space-y-3" noValidate>
-        {FIELDS.map((f) => (
-          <div key={f.name}>
-            <label htmlFor={f.name} className="block text-sm font-medium">
-              {f.label}
-            </label>
-            <input
-              id={f.name}
-              name={f.name}
-              type={f.type}
-              value={values[f.name] ?? ""}
-              onChange={(e) => set(f.name, e.target.value)}
-              className="mt-1 w-full rounded border px-3 py-2"
-            />
-            {errors.includes(f.name) && <p className="mt-1 text-sm text-red-600">Ungültig: {f.name}</p>}
-          </div>
-        ))}
-        <div>
-          <label htmlFor="reminderDays" className="block text-sm font-medium">
+    <Shell>
+      <Link href="/" className="text-sm font-medium text-muted hover:text-ink">
+        ← Zurück
+      </Link>
+      <h1 className="mt-2 text-2xl font-semibold tracking-tight">Gutschein anlegen</h1>
+      <p className="mt-1 text-sm text-muted">Alle Angaben lassen sich später noch ändern.</p>
+      <form onSubmit={onSubmit} className="mt-5 rounded-card border border-line bg-white p-5 sm:p-6" noValidate>
+        <div className="grid gap-4 sm:grid-cols-2">
+          {FIELDS.map((f) => (
+            <div key={f.name} className={f.name === "notiz" ? "sm:col-span-2" : undefined}>
+              <label htmlFor={f.name} className="block text-[13px] font-semibold">
+                {f.label}
+              </label>
+              <input
+                id={f.name}
+                name={f.name}
+                type={f.type}
+                value={values[f.name] ?? ""}
+                placeholder={f.placeholder || undefined}
+                onChange={(e) => set(f.name, e.target.value)}
+                aria-invalid={errors.includes(f.name)}
+                className={`${inputClass} ${errors.includes(f.name) ? "border-danger" : ""}`}
+              />
+              {errors.includes(f.name) && (
+                <p className="mt-1 text-[13px] font-medium text-danger">Bitte prüfe dieses Feld.</p>
+              )}
+            </div>
+          ))}
+        </div>
+        <div className="mt-4">
+          <label htmlFor="reminderDays" className="block text-[13px] font-semibold">
             Erinnerung (Tage vorher, Kommaliste)
           </label>
           <input
@@ -99,30 +114,52 @@ export default function NewVoucherPage() {
             value={reminderDays}
             onChange={(e) => setReminderDays(e.target.value)}
             placeholder="30,6,1"
-            className="mt-1 w-full rounded border px-3 py-2"
+            aria-invalid={errors.includes("reminderDays") || errors.includes("reminder")}
+            className={`${inputClass} ${errors.includes("reminderDays") || errors.includes("reminder") ? "border-danger" : ""}`}
           />
-            {errors.includes("reminderDays") && <p className="mt-1 text-sm text-red-600">Ungültig: reminderDays</p>}
+          {(errors.includes("reminderDays") || errors.includes("reminder")) && (
+            <p className="mt-1 text-[13px] font-medium text-danger">Mindestens ein gültiger Tag nötig.</p>
+          )}
         </div>
-        <section id="kontakte">
-          <h2 className="text-sm font-medium">Empfänger</h2>
-          {contacts.map((c) => (
-            <label key={c.id} className="flex items-center gap-2 text-sm">
-              <input
-                type="checkbox"
-                checked={contactIds.includes(c.id)}
-                onChange={(e) =>
-                  setContactIds((ids) => (e.target.checked ? [...ids, c.id] : ids.filter((x) => x !== c.id)))
-                }
-              />
-              {c.name}
-            </label>
-          ))}
+        <section id="kontakte" aria-label="Empfänger" className="mt-5 rounded-field bg-wash p-4">
+          <h2 className="text-[13px] font-semibold">Empfänger</h2>
+          <p className="mt-0.5 text-[13px] text-muted">Wer soll an diesen Gutschein erinnert werden?</p>
+          {contacts.length === 0 ? (
+            <p className="mt-2 text-[13px] text-muted">
+              Noch keine Kontakte. Lege sie unter <Link href="/contacts" className="font-semibold text-brand-700 underline">Kontakte</Link> an.
+            </p>
+          ) : (
+            <ul className="mt-2 grid gap-1.5">
+              {contacts.map((c) => (
+                <li key={c.id}>
+                  <label className="flex cursor-pointer items-center gap-2.5 rounded-lg px-1 py-1 text-sm hover:bg-white">
+                    <input
+                      type="checkbox"
+                      checked={contactIds.includes(c.id)}
+                      onChange={(e) =>
+                        setContactIds((ids) => (e.target.checked ? [...ids, c.id] : ids.filter((x) => x !== c.id)))
+                      }
+                      className="h-4 w-4 accent-brand-700"
+                    />
+                    {c.name}
+                  </label>
+                </li>
+              ))}
+            </ul>
+          )}
         </section>
-        {serverError && <p className="text-sm text-red-600">{serverError}</p>}
-        <button type="submit" className="rounded bg-black px-4 py-2 text-white">
+        {serverError && (
+          <p role="alert" className="mt-4 rounded-field bg-danger/10 px-3.5 py-2.5 text-sm font-medium text-danger">
+            {serverError}
+          </p>
+        )}
+        <button
+          type="submit"
+          className="mt-5 h-12 w-full rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99] sm:w-auto sm:px-8"
+        >
           Speichern
         </button>
       </form>
-    </main>
+    </Shell>
   );
 }
diff --git a/next-env.d.ts b/next-env.d.ts
new file mode 100644
index 0000000..1b3be08
--- /dev/null
+++ b/next-env.d.ts
@@ -0,0 +1,5 @@
+/// <reference types="next" />
+/// <reference types="next/image-types/global" />
+
+// NOTE: This file should not be edited
+// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.
diff --git a/package-lock.json b/package-lock.json
index 998053e..9d5e832 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,13 +7,15 @@
       "name": "gutscheintracker",
       "dependencies": {
         "@prisma/client": "6.5.0",
+        "@tailwindcss/postcss": "^4.3.3",
         "bcryptjs": "2.4.3",
         "jose": "5.9.6",
         "next": "15.3.0",
         "nodemailer": "6.9.14",
         "prisma": "6.5.0",
         "react": "19.0.0",
-        "react-dom": "19.0.0"
+        "react-dom": "19.0.0",
+        "tailwindcss": "^4.3.3"
       },
       "devDependencies": {
         "@types/bcryptjs": "2.4.6",
@@ -25,6 +27,18 @@
         "vitest": "3.0.0"
       }
     },
+    "node_modules/@alloc/quick-lru": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/@alloc/quick-lru/-/quick-lru-5.3.0.tgz",
+      "integrity": "sha512-U4+70Pc5ZS9osnCBCE5Jha/ciHM+Yp+CNMNC/7HvYbNRk1Ldd+f7qO65W5qfhu/TCv+/ozljlXXe9Nj8419DMA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/@emnapi/runtime": {
       "version": "1.11.3",
       "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.11.3.tgz",
@@ -965,13 +979,51 @@
         "url": "https://opencollective.com/libvips"
       }
     },
+    "node_modules/@jridgewell/gen-mapping": {
+      "version": "0.3.13",
+      "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz",
+      "integrity": "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==",
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/sourcemap-codec": "^1.5.0",
+        "@jridgewell/trace-mapping": "^0.3.24"
+      }
+    },
+    "node_modules/@jridgewell/remapping": {
+      "version": "2.3.5",
+      "resolved": "https://registry.npmjs.org/@jridgewell/remapping/-/remapping-2.3.5.tgz",
+      "integrity": "sha512-LI9u/+laYG4Ds1TDKSJW2YPrIlcVYOwi2fUC6xB43lueCjgxV4lffOCZCtYFiH6TNOX+tQKXx97T4IKHbhyHEQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/gen-mapping": "^0.3.5",
+        "@jridgewell/trace-mapping": "^0.3.24"
+      }
+    },
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+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/lightningcss-linux-arm-gnueabihf": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm-gnueabihf/-/lightningcss-linux-arm-gnueabihf-1.32.0.tgz",
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+      "cpu": [
+        "arm"
+      ],
+      "license": "MPL-2.0",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/lightningcss-linux-arm64-gnu": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm64-gnu/-/lightningcss-linux-arm64-gnu-1.32.0.tgz",
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+      "cpu": [
+        "arm64"
+      ],
+      "libc": [
+        "glibc"
+      ],
+      "license": "MPL-2.0",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/lightningcss-linux-arm64-musl": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm64-musl/-/lightningcss-linux-arm64-musl-1.32.0.tgz",
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+      "cpu": [
+        "arm64"
+      ],
+      "libc": [
+        "musl"
+      ],
+      "license": "MPL-2.0",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/lightningcss-linux-x64-gnu": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-linux-x64-gnu/-/lightningcss-linux-x64-gnu-1.32.0.tgz",
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+      "cpu": [
+        "x64"
+      ],
+      "libc": [
+        "glibc"
+      ],
+      "license": "MPL-2.0",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/lightningcss-linux-x64-musl": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-linux-x64-musl/-/lightningcss-linux-x64-musl-1.32.0.tgz",
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+      "cpu": [
+        "x64"
+      ],
+      "libc": [
+        "musl"
+      ],
+      "license": "MPL-2.0",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/lightningcss-win32-arm64-msvc": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-win32-arm64-msvc/-/lightningcss-win32-arm64-msvc-1.32.0.tgz",
+      "integrity": "sha512-8SbC8BR40pS6baCM8sbtYDSwEVQd4JlFTOlaD3gWGHfThTcABnNDBda6eTZeqbofalIJhFx0qKzgHJmcPTnGdw==",
+      "cpu": [
+        "arm64"
+      ],
+      "license": "MPL-2.0",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/lightningcss-win32-x64-msvc": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-win32-x64-msvc/-/lightningcss-win32-x64-msvc-1.32.0.tgz",
+      "integrity": "sha512-Amq9B/SoZYdDi1kFrojnoqPLxYhQ4Wo5XiL8EVJrVsB8ARoC1PWW6VGtT0WKCemjy8aC+louJnjS7U18x3b06Q==",
+      "cpu": [
+        "x64"
+      ],
+      "license": "MPL-2.0",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
     "node_modules/loupe": {
       "version": "3.2.1",
       "resolved": "https://registry.npmjs.org/loupe/-/loupe-3.2.1.tgz",
@@ -2078,7 +2714,6 @@
       "version": "0.30.21",
       "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.21.tgz",
       "integrity": "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "@jridgewell/sourcemap-codec": "^1.5.5"
@@ -2456,6 +3091,25 @@
         }
       }
     },
+    "node_modules/tailwindcss": {
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.3.3.tgz",
+      "integrity": "sha512-gOhV3P7ufE62QDGg1zVaTgCR+EtPv92k2nIhVcVKcLmxT1sUBsQGhnZj175j+MqRt4zLF7ic+sCYjfhxMxj7YQ==",
+      "license": "MIT"
+    },
+    "node_modules/tapable": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/tapable/-/tapable-2.3.3.tgz",
+      "integrity": "sha512-uxc/zpqFg6x7C8vOE7lh6Lbda8eEL9zmVm/PLeTPBRhh1xCgdWaQ+J1CUieGpIfm2HdtsUpRv+HshiasBMcc6A==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      }
+    },
     "node_modules/tinybench": {
       "version": "2.9.0",
       "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
diff --git a/package.json b/package.json
index fd60786..109faf2 100644
--- a/package.json
+++ b/package.json
@@ -9,13 +9,15 @@
   },
   "dependencies": {
     "@prisma/client": "6.5.0",
+    "@tailwindcss/postcss": "^4.3.3",
     "bcryptjs": "2.4.3",
     "jose": "5.9.6",
     "next": "15.3.0",
     "nodemailer": "6.9.14",
     "prisma": "6.5.0",
     "react": "19.0.0",
-    "react-dom": "19.0.0"
+    "react-dom": "19.0.0",
+    "tailwindcss": "^4.3.3"
   },
   "devDependencies": {
     "@types/bcryptjs": "2.4.6",
diff --git a/postcss.config.mjs b/postcss.config.mjs
new file mode 100644
index 0000000..c2ddf74
--- /dev/null
+++ b/postcss.config.mjs
@@ -0,0 +1,5 @@
+export default {
+  plugins: {
+    "@tailwindcss/postcss": {},
+  },
+};
diff --git a/prisma/dev.db b/prisma/dev.db
new file mode 100644
index 0000000..bd2ea78
Binary files /dev/null and b/prisma/dev.db differ