Add placeholder images, enhance alert styles, and implement theme toggle component with dark mode support

app/Livewire/AuthMenuComponent.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Livewire;
+
+use Livewire\Component;
+
+class AuthMenuComponent extends Component
+{
+    public bool $isOpen = false;
+
+    public function toggle()
+    {
+        $this->isOpen = !$this->isOpen;
+    }
+
+    public function render()
+    {
+        return view('livewire.auth-menu-component');
+    }
+}

app/Livewire/Counter.php

@@ -1,25 +1,26 @@
 <?php
- 
+
 namespace App\Livewire;
- 
+
 use Livewire\Component;
- 
+
 class Counter extends Component
 {
     public $count = 1;
- 
+
     public function increment()
     {
         $this->count++;
     }
- 
+
     public function decrement()
     {
         $this->count--;
     }
- 
+
     public function render()
     {
-        return view('livewire.counter');
+        return view('livewire.counter')
+            ->layout('layouts.app');
     }
 }

app/Livewire/MobileMenuComponent.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Livewire;
+
+use Livewire\Component;
+
+class MobileMenuComponent extends Component
+{
+    public bool $isOpen = false;
+
+    public function toggle()
+    {
+        $this->isOpen = !$this->isOpen;
+    }
+
+    public function render()
+    {
+        return view('livewire.mobile-menu-component');
+    }
+}

app/Livewire/ThemeToggleComponent.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Livewire;
+
+use Livewire\Component;
+
+class ThemeToggleComponent extends Component
+{
+    public bool $isDark = false;
+
+    public function mount()
+    {
+        $this->isDark = session('theme') === 'dark';
+    }
+
+    public function toggleTheme()
+    {
+        $this->isDark = !$this->isDark;
+        session(['theme' => $this->isDark ? 'dark' : 'light']);
+        $this->dispatch('theme-changed', theme: $this->isDark ? 'dark' : 'light');
+    }
+
+    public function render()
+    {
+        return view('livewire.theme-toggle-component');
+    }
+}

app/Livewire/UserMenuComponent.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Livewire;
+
+use Livewire\Component;
+
+class UserMenuComponent extends Component
+{
+    public bool $isOpen = false;
+
+    public function toggle()
+    {
+        $this->isOpen = !$this->isOpen;
+    }
+
+    public function render()
+    {
+        return view('livewire.user-menu-component');
+    }
+}