fix: switch Google Fonts to runtime <link> tags for build environments without internet

- Replace next/font/google with <link> tags in <head> (loads fonts client-side at runtime)
- Define --font-nunito and --font-pixel CSS variables in globals.css with font-family fallbacks
- Remove @prisma/client from serverExternalPackages in next.config.ts (devDep only)

src/app/globals.css

@@ -4,6 +4,11 @@
 @plugin "tailwindcss-animate";
 @custom-variant dark (&:where(.dark, .dark *));
 
+:root {
+	--font-nunito: "Nunito", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
+	--font-pixel: "Pixelify Sans", monospace;
+}
+
 @theme {
 	--font-sans:
 		var(--font-nunito), "Nunito", ui-sans-serif, system-ui, -apple-system,

src/app/layout.tsx

@@ -1,5 +1,4 @@
 import type { Metadata } from "next";
-import { Nunito, Pixelify_Sans } from "next/font/google";
 import { headers } from "next/headers";
 import Script from "next/script";
 import { NextIntlClientProvider } from "next-intl";
@@ -15,20 +14,6 @@ import { resolveHotelName } from "@/lib/hotel-name";
 import { siteSettings } from "@/lib/services/site-settings";
 import "./globals.css";
 
-const nunito = Nunito({
-	subsets: ["latin"],
-	weight: ["400", "600", "700", "800"],
-	display: "swap",
-	variable: "--font-nunito",
-});
-
-const pixelFont = Pixelify_Sans({
-	subsets: ["latin"],
-	weight: ["400", "700"],
-	display: "swap",
-	variable: "--font-pixel",
-});
-
 export async function generateMetadata(): Promise<Metadata> {
 	const appUrl = process.env.APP_URL ?? "http://localhost:3000";
 	const hotel = await resolveHotelName();
@@ -69,10 +54,20 @@ export default async function RootLayout({
 	return (
 		<html
 			lang={locale}
-			className={`app ${nunito.variable} ${pixelFont.variable}`}
+			className="app"
 		>
 			<head>
 				<meta name="theme-default-dark" content={String(defaultDark)} />
+				<link rel="preconnect" href="https://fonts.googleapis.com" />
+				<link rel="preconnect" href="https://fonts.gstatic.com" crossOrigin="anonymous" />
+				<link
+					rel="stylesheet"
+					href="https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap"
+				/>
+				<link
+					rel="stylesheet"
+					href="https://fonts.googleapis.com/css2?family=Pixelify+Sans:wght@400;700&display=swap"
+				/>
 				<Script
 					src="/scripts/theme-init.js"
 					strategy="beforeInteractive"