feat: implement the first section of landing page

frontend/src/components/theme-provider.tsx

@@ -1,10 +1,19 @@
 "use client";
 
+import { usePathname } from "next/navigation";
 import { ThemeProvider as NextThemesProvider } from "next-themes";
 
 export function ThemeProvider({
   children,
   ...props
 }: React.ComponentProps<typeof NextThemesProvider>) {
-  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
+  const pathname = usePathname();
+  return (
+    <NextThemesProvider
+      {...props}
+      forcedTheme={pathname === "/" ? "dark" : undefined}
+    >
+      {children}
+    </NextThemesProvider>
+  );
 }