diff --git a/frontend/src/app/admin/layout.tsx b/frontend/src/app/admin/layout.tsx
index 54a34a3..47d3188 100644
--- a/frontend/src/app/admin/layout.tsx
+++ b/frontend/src/app/admin/layout.tsx
@@ -5,6 +5,7 @@ import Link from 'next/link';
 import { usePathname, useRouter } from 'next/navigation';
 import { useToast } from '@/contexts/ToastContext';
 import { useConfirm } from '@/contexts/ConfirmContext';
+import { useTheme } from 'next-themes';
 
 type TranslationSummary = {
   slug: string;
@@ -22,10 +23,12 @@ export default function AdminLayout({
   const [isLoading, setIsLoading] = useState(true);
   const [showAvatarModal, setShowAvatarModal] = useState(false);
   const [isUploading, setIsUploading] = useState(false);
+  const [mounted, setMounted] = useState(false);
   const pathname = usePathname();
   const router = useRouter();
   const { success, error } = useToast();
   const { confirm } = useConfirm();
+  const { theme, setTheme } = useTheme();
   const [showNotifications, setShowNotifications] = useState(false);
   const [translationSummary, setTranslationSummary] = useState<TranslationSummary[]>([]);
   const [isFetchingTranslations, setIsFetchingTranslations] = useState(false);
@@ -80,6 +83,7 @@ export default function AdminLayout({
   }, [success]);
 
   useEffect(() => {
+    setMounted(true);
     const fetchUser = async () => {
       try {
         const response = await fetch('/api/auth/me');
@@ -284,6 +288,19 @@ export default function AdminLayout({
           </button>
 
           <div className="flex items-center gap-4">
+            {/* Dark Mode Toggle */}
+            <button 
+              onClick={() => setTheme(theme === 'dark' ? 'light' : 'dark')}
+              className="w-10 h-10 rounded-lg hover:bg-gray-100 dark:hover:bg-white/5 flex items-center justify-center text-gray-600 dark:text-yellow-400 transition-colors cursor-pointer"
+              aria-label="Alternar tema"
+            >
+              {mounted && theme === 'dark' ? (
+                <i className="ri-sun-line text-xl"></i>
+              ) : (
+                <i className="ri-moon-line text-xl"></i>
+              )}
+            </button>
+
             <div ref={notificationsRef} className="relative">
               <button
                 onClick={() => {
diff --git a/frontend/src/app/admin/page.tsx b/frontend/src/app/admin/page.tsx
index 0e6fa87..944f3ac 100644
--- a/frontend/src/app/admin/page.tsx
+++ b/frontend/src/app/admin/page.tsx
@@ -160,7 +160,7 @@ export default function AdminDashboard() {
           <p className="text-xs text-gray-400 mt-1">{stats.activeProjects} ativos</p>
         </Link>
 
-        <Link href="/admin/contatos" className="bg-white dark:bg-secondary p-6 rounded-xl border border-gray-200 dark:border-white/10 shadow-sm cursor-pointer hover:shadow-md transition-all">
+        <Link href="/admin/mensagens" className="bg-white dark:bg-secondary p-6 rounded-xl border border-gray-200 dark:border-white/10 shadow-sm cursor-pointer hover:shadow-md transition-all">
           <div className="flex items-center justify-between mb-4">
             <div className="w-12 h-12 rounded-xl flex items-center justify-center bg-green-50 dark:bg-green-900/20 text-green-500">
               <i className="ri-message-3-line text-2xl"></i>
@@ -198,7 +198,7 @@ export default function AdminDashboard() {
         <div className="bg-white dark:bg-secondary p-6 rounded-xl border border-gray-200 dark:border-white/10 shadow-sm">
           <div className="flex items-center justify-between mb-6">
             <h3 className="text-lg font-bold text-secondary dark:text-white">Últimas Mensagens</h3>
-            <Link href="/admin/contatos" className="text-primary text-sm font-bold hover:underline">Ver todas</Link>
+            <Link href="/admin/mensagens" className="text-primary text-sm font-bold hover:underline">Ver todas</Link>
           </div>
           <div className="space-y-4">
             {recentContacts.length === 0 ? (
@@ -207,7 +207,7 @@ export default function AdminDashboard() {
               recentContacts.map((contact) => (
                 <Link 
                   key={contact.id} 
-                  href="/admin/contatos"
+                  href="/admin/mensagens"
                   className="flex items-start gap-4 p-4 rounded-lg hover:bg-gray-50 dark:hover:bg-white/5 transition-colors border border-transparent hover:border-gray-100 dark:hover:border-white/5 cursor-pointer"
                 >
                   <div className="w-10 h-10 rounded-full bg-primary/10 flex items-center justify-center shrink-0">
diff --git a/frontend/src/app/api/contact-info/route.ts b/frontend/src/app/api/contact-info/route.ts
index f73db02..23044d5 100644
--- a/frontend/src/app/api/contact-info/route.ts
+++ b/frontend/src/app/api/contact-info/route.ts
@@ -27,7 +27,7 @@ export async function GET() {
       // Retorna valores padrão
       return NextResponse.json({
         whatsapp: '(35) 9882-9445',
-        whatsappLink: 'https://wa.me/553598829445'
+        whatsappLink: 'https://wa.me/5535988229445'
       });
     }
 
@@ -48,7 +48,7 @@ export async function GET() {
 
     const result = {
       whatsapp: whatsappItem?.linkText || '(35) 9882-9445',
-      whatsappLink: whatsappItem?.link || 'https://wa.me/553598829445'
+      whatsappLink: whatsappItem?.link || 'https://wa.me/5535988229445'
     };
 
     // Atualiza cache
@@ -62,7 +62,7 @@ export async function GET() {
     // Retorna valores padrão em caso de erro
     return NextResponse.json({
       whatsapp: '(35) 9882-9445',
-      whatsappLink: 'https://wa.me/553598829445'
+      whatsappLink: 'https://wa.me/5535988229445'
     });
   }
 }
diff --git a/frontend/src/components/Header.tsx b/frontend/src/components/Header.tsx
index 3ab115a..5caaf79 100644
--- a/frontend/src/components/Header.tsx
+++ b/frontend/src/components/Header.tsx
@@ -12,7 +12,7 @@ export default function Header() {
   const { theme, setTheme } = useTheme();
   const { locale, setLocale, t } = useLocale();
   const [mounted, setMounted] = useState(false);
-  const [whatsappLink, setWhatsappLink] = useState('https://wa.me/553598829445');
+  const [whatsappLink, setWhatsappLink] = useState('https://wa.me/5535988229445');
 
   // Prefixo para links baseado no locale
   const prefix = locale === 'pt' ? '' : `/${locale}`;
diff --git a/frontend/src/components/WhatsAppButton.tsx b/frontend/src/components/WhatsAppButton.tsx
index 9f918ed..d418bcb 100644
--- a/frontend/src/components/WhatsAppButton.tsx
+++ b/frontend/src/components/WhatsAppButton.tsx
@@ -6,7 +6,7 @@ import { useState, useEffect } from 'react';
 
 export default function WhatsAppButton() {
   const { t } = useLanguage();
-  const [whatsappLink, setWhatsappLink] = useState('https://wa.me/553598829445');
+  const [whatsappLink, setWhatsappLink] = useState('https://wa.me/5535988229445');
 
   useEffect(() => {
     // Busca o número do WhatsApp do CMS