feat: update layout and components for improved user experience, add theme toggle and main navigation

thoughts-frontend/components/header.tsx

@@ -1,37 +1,39 @@
-// components/header.tsx
 "use client";
 
 import { useAuth } from "@/hooks/use-auth";
 import Link from "next/link";
 import { Button } from "./ui/button";
 import { UserNav } from "./user-nav";
+import { MainNav } from "./main-nav";
+import { ThemeToggle } from "./theme-toggle";
+import { Wind } from "lucide-react";
 
 export function Header() {
   const { token } = useAuth();
 
   return (
     <header className="sticky top-0 z-50 w-full border-b bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60">
-      <div className="container flex h-14 items-center">
-        <div className="mr-4 flex">
-          <Link href="/" className="mr-6 flex items-center space-x-2">
-            <span className="font-bold">Thoughts</span>
+      <div className="w-full flex h-14 items-center px-2">
+        <div className="flex gap-2">
+          <Link href="/" className="flex items-center gap-1">
+            <span className="hidden font-bold sm:inline-block">Thoughts</span>
           </Link>
+          <MainNav />
         </div>
-        <div className="flex flex-1 items-center justify-end space-x-4">
-          <nav className="flex items-center space-x-2">
-            {token ? (
-              <UserNav />
-            ) : (
-              <>
-                <Button asChild variant="ghost">
-                  <Link href="/login">Login</Link>
-                </Button>
-                <Button asChild>
-                  <Link href="/register">Register</Link>
-                </Button>
-              </>
-            )}
-          </nav>
+        <div className="flex flex-1 items-center justify-end space-x-2">
+          <ThemeToggle />
+          {token ? (
+            <UserNav />
+          ) : (
+            <>
+              <Button asChild variant="ghost" size="sm">
+                <Link href="/login">Login</Link>
+              </Button>
+              <Button asChild size="sm">
+                <Link href="/register">Register</Link>
+              </Button>
+            </>
+          )}
         </div>
       </div>
     </header>

thoughts-frontend/components/main-nav.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import Link from "next/link";
+import { usePathname } from "next/navigation";
+import { cn } from "@/lib/utils";
+
+export function MainNav() {
+  const pathname = usePathname();
+  return (
+    <nav className="hidden md:flex items-center space-x-6 text-sm font-medium">
+      <Link
+        href="/"
+        className={cn(
+          "transition-colors hover:text-foreground/80",
+          pathname === "/" ? "text-foreground" : "text-foreground/60"
+        )}
+      >
+        Feed
+      </Link>
+    </nav>
+  );
+}

thoughts-frontend/components/theme-provider.tsx

@@ -0,0 +1,11 @@
+"use client";
+
+import * as React from "react";
+import {
+  ThemeProvider as NextThemesProvider,
+  ThemeProviderProps,
+} from "next-themes";
+
+export function ThemeProvider({ children, ...props }: ThemeProviderProps) {
+  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
+}

thoughts-frontend/components/theme-toggle.tsx

@@ -0,0 +1,40 @@
+"use client";
+
+import * as React from "react";
+import { Moon, Sun } from "lucide-react";
+import { useTheme } from "next-themes";
+
+import { Button } from "@/components/ui/button";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+
+export function ThemeToggle() {
+  const { setTheme } = useTheme();
+
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button variant="ghost" size="icon">
+          <Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
+          <Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
+          <span className="sr-only">Toggle theme</span>
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent align="end">
+        <DropdownMenuItem onClick={() => setTheme("light")}>
+          Light
+        </DropdownMenuItem>
+        <DropdownMenuItem onClick={() => setTheme("dark")}>
+          Dark
+        </DropdownMenuItem>
+        <DropdownMenuItem onClick={() => setTheme("system")}>
+          System
+        </DropdownMenuItem>
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}