Fix mobile menu visibility and hide login buttons

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: DorianZheng

src/components/navbar/navbar.astro

@@ -25,9 +25,9 @@ const menuitems: { title: string; path: string; badge?: boolean; children?: { ti
             class="text-slate-500">Lite</span
           >
         </a>
-        <!--<div class="block lg:hidden">
+        <div class="block lg:hidden">
           <MenuIcon class="w-4 h-4 text-gray-800" />
-        </div>-->
+        </div>
       </div>
       <MenuItems class="hidden w-full lg:w-auto mt-2 lg:flex lg:mt-0">
         <ul class="flex flex-col lg:flex-row lg:gap-3">
@@ -60,10 +60,10 @@ const menuitems: { title: string; path: string; badge?: boolean; children?: { ti
             ))
           }
         </ul>
-        <div class="lg:hidden flex items-center mt-3 gap-4">
+        <!--<div class="lg:hidden flex items-center mt-3 gap-4">
           <Link href="#" style="muted" block size="md">Log in</Link>
           <Link href="#" size="md" block>Sign up</Link>
-        </div>
+        </div>-->
       </MenuItems>
     </Astronav>
     <!--<div>