refactor(ui): replace theme dropdown with toggle button

src/components/mode-toogle.tsx

@@ -1,40 +1,21 @@
 '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 ModeToggle() {
-  const { setTheme } = useTheme();
+  const { resolvedTheme, setTheme } = useTheme();
+  const toggleTheme = () => {
+    setTheme(resolvedTheme === 'dark' ? 'light' : 'dark');
+  };
 
   return (
-    <DropdownMenu>
-      <DropdownMenuTrigger asChild>
-        <Button variant="outline" 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>
+    <Button variant="outline" size="icon" onClick={toggleTheme}>
+      <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>
   );
 }