diff --git a/src/App.jsx b/src/App.jsx
index a95d0fd..363a5b0 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -15,7 +15,7 @@ import {
 } from 'firebase/auth';
 import {
     collection, doc, onSnapshot, addDoc, updateDoc,
-    deleteDoc, writeBatch
+    deleteDoc, writeBatch, setDoc
 } from 'firebase/firestore';
 
 import { auth, db, appId } from './lib/firebase';
@@ -42,10 +42,15 @@ export default function App() {
     // Estado para criação de Looks
     const [selectedForLook, setSelectedForLook] = useState([]);
 
+    // Perfil do Utilizador
+    const [userProfile, setUserProfile] = useState({});
+    const [savingProfile, setSavingProfile] = useState(false);
+
     // Estado para Definições
     const [notificationsEnabled, setNotificationsEnabled] = useState(true);
     const [weatherAlerts, setWeatherAlerts] = useState(true);
     const [language, setLanguage] = useState('PT');
+    const [showLangModal, setShowLangModal] = useState(false);
     const [theme, setTheme] = useState(() => localStorage.getItem('app-theme') || 'theme-indigo');
 
     const t = (key) => translations[language]?.[key] || translations['PT'][key] || key;
@@ -89,7 +94,14 @@ export default function App() {
             setLooks(snap.docs.map(d => ({ id: d.id, ...d.data() })));
         }, (err) => console.error(err));
 
-        return () => { unsubClothes(); unsubLooks(); };
+        // Profile
+        const profileDoc = doc(db, 'artifacts', appId, 'users', user.uid, 'profile', 'data');
+        const unsubProfile = onSnapshot(profileDoc, (snap) => {
+            if (snap.exists()) setUserProfile(snap.data());
+            else setUserProfile({});
+        }, (err) => console.error(err));
+
+        return () => { unsubClothes(); unsubLooks(); unsubProfile(); };
     }, [user]);
 
     // --- Lógicas de Negócio ---
@@ -231,6 +243,25 @@ export default function App() {
         finally { setLoading(false); }
     };
 
+    const saveProfile = async (e) => {
+        e.preventDefault();
+        setSavingProfile(true);
+        const fd = new FormData(e.target);
+        try {
+            const profileDoc = doc(db, 'artifacts', appId, 'users', user.uid, 'profile', 'data');
+            await setDoc(profileDoc, {
+                username: fd.get('username') || '',
+                fullName: fd.get('fullName') || '',
+                dob: fd.get('dob') || '',
+                bio: fd.get('bio') || ''
+            }, { merge: true });
+        } catch (err) {
+            console.error(err);
+        } finally {
+            setSavingProfile(false);
+        }
+    };
+
     if (loading && !user) return <div className="h-screen flex items-center justify-center bg-primary-50 dark:bg-gray-950"><Loader2 className="animate-spin text-primary-600" size={40} /></div>;
 
     if (view === 'auth') {
@@ -304,10 +335,10 @@ export default function App() {
                     <div className="mt-auto pt-10 border-t border-inherit">
                         <div className="flex items-center gap-4 mb-8 px-2">
                             <div className={`w-12 h-12 rounded-2xl flex items-center justify-center font-black text-white shadow-xl ${darkMode ? 'bg-primary-500' : 'bg-primary-600'}`}>
-                                {user?.email?.[0]?.toUpperCase() || 'U'}
+                                {(userProfile?.fullName?.[0] || userProfile?.username?.[0] || user?.email?.[0] || 'U').toUpperCase()}
                             </div>
                             <div className="flex-1 min-w-0">
-                                <p className="text-sm font-black truncate">{user?.email?.split('@')[0] || t('userTitle')}</p>
+                                <p className="text-sm font-black truncate">{userProfile?.username || userProfile?.fullName || user?.email?.split('@')[0] || t('userTitle')}</p>
                                 <Badge variant="success">{t('online')}</Badge>
                             </div>
                         </div>
@@ -632,17 +663,32 @@ export default function App() {
                             <Card className="p-10 border-primary-100 relative overflow-hidden" darkMode={darkMode}>
                                 <div className="flex items-center gap-8 relative z-10 text-inherit">
                                     <div className="w-24 h-24 rounded-[2.5rem] bg-primary-600 flex items-center justify-center text-white text-4xl font-black shadow-2xl">
-                                        {user?.email?.[0]?.toUpperCase() || 'U'}
+                                        {(userProfile?.fullName?.[0] || userProfile?.username?.[0] || user?.email?.[0] || 'U').toUpperCase()}
                                     </div>
                                     <div>
-                                        <h3 className="text-3xl font-black tracking-tighter">{t('yourAccount')}</h3>
-                                        <p className="opacity-60 font-bold text-sm">{user?.email || t('papMode')}</p>
+                                        <h3 className="text-3xl font-black tracking-tighter">{userProfile?.fullName || t('yourAccount')}</h3>
+                                        <p className="opacity-60 font-bold text-sm">@{userProfile?.username || user?.email?.split('@')[0] || t('papMode')}</p>
                                     </div>
                                 </div>
                             </Card>
 
+                            <Card className="p-8" darkMode={darkMode}>
+                                <h3 className="text-xl font-black mb-6 flex items-center gap-3 text-inherit"><UserCircle className="text-primary-600" /> {t('profileInfo')}</h3>
+                                <form onSubmit={saveProfile} className="space-y-6">
+                                    <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
+                                        <Input label={t('username')} name="username" defaultValue={userProfile?.username || ''} placeholder="Ex: amari" />
+                                        <Input label={t('fullName')} name="fullName" defaultValue={userProfile?.fullName || ''} placeholder="Ex: Amari Rodriguez" />
+                                        <Input label={`${t('dob')} ${t('optional')}`} name="dob" type="date" defaultValue={userProfile?.dob || ''} />
+                                        <Input label={`${t('bio')} ${t('optional')}`} name="bio" defaultValue={userProfile?.bio || ''} placeholder="..." />
+                                    </div>
+                                    <button disabled={savingProfile} type="submit" className="w-full py-4 bg-primary-600 text-white rounded-xl font-black uppercase text-[10px] tracking-widest shadow-xl shadow-primary-600/30 disabled:opacity-50 hover:scale-[1.01] transition-all">
+                                        {savingProfile ? t('saving') : t('save')}
+                                    </button>
+                                </form>
+                            </Card>
+
                             {/* Preferências */}
-                            <div className="grid grid-cols-1 md:grid-cols-2 gap-8">
+                            <div className="flex flex-col gap-8">
                                 <Card className="p-8" darkMode={darkMode}>
                                     <h3 className="text-xl font-black mb-6 flex items-center gap-3 text-inherit"><Settings className="text-primary-600" /> {t('preferences')}</h3>
                                     <div className="space-y-6">
@@ -697,24 +743,25 @@ export default function App() {
                                                 <div className={`w-6 h-6 rounded-full bg-white absolute top-1 transition-all ${weatherAlerts ? 'left-7' : 'left-1'}`}></div>
                                             </button>
                                         </div>
-                                    </div>
-                                </Card>
-
-                                <Card className="p-8" darkMode={darkMode}>
-                                    <h3 className="text-xl font-black mb-6 flex items-center gap-3 text-inherit"><Globe className="text-primary-600" /> {t('systemAndData')}</h3>
-                                    <div className="space-y-6">
-                                        <div className="space-y-2">
-                                            <label className="text-[10px] font-black uppercase opacity-40 tracking-widest ml-1 text-inherit">{t('appLanguage')}</label>
-                                            <select value={language} onChange={(e) => setLanguage(e.target.value)} className={`w-full p-4 rounded-xl border-none outline-none focus:ring-2 focus:ring-primary-500 font-bold ${darkMode ? 'bg-gray-800 text-white' : 'bg-gray-50'}`}>
-                                                <option value="PT">{t('portuguese')}</option>
-                                                <option value="EN">{t('english')}</option>
-                                                <option value="ES">{t('spanish')}</option>
-                                                <option value="FR">{t('french')}</option>
-                                                <option value="DE">{t('german')}</option>
-                                            </select>
+                                        <div className="flex items-center justify-between pt-4 border-t border-gray-100 dark:border-gray-800">
+                                            <div>
+                                                <p className="font-bold text-inherit">{t('appLanguage')}</p>
+                                                <p className="text-[10px] uppercase tracking-widest opacity-50 text-inherit">
+                                                    {language === 'PT' ? '🇵🇹 ' + t('portuguese') : 
+                                                     language === 'EN' ? '🇬🇧 ' + t('english') :
+                                                     language === 'ES' ? '🇪🇸 ' + t('spanish') :
+                                                     language === 'FR' ? '🇫🇷 ' + t('french') :
+                                                     language === 'DE' ? '🇩🇪 ' + t('german') : language}
+                                                </p>
+                                            </div>
+                                            <button onClick={() => setShowLangModal(true)} className="px-5 py-2 font-black text-[10px] uppercase tracking-widest bg-primary-50 text-primary-600 rounded-xl hover:bg-primary-100 transition-colors dark:bg-primary-900/40 dark:text-primary-400">
+                                                {t('edit')}
+                                            </button>
                                         </div>
                                     </div>
                                 </Card>
+
+
                             </div>
 
                             <div className="space-y-6">
@@ -753,6 +800,36 @@ export default function App() {
 
                 </div>
             </main>
+
+            {/* Modal de Idioma */}
+            {showLangModal && (
+                <div className="fixed inset-0 z-[200] flex items-center justify-center bg-black/60 backdrop-blur-sm p-6" onClick={() => setShowLangModal(false)}>
+                    <Card className="w-full max-w-lg p-8 animate-in zoom-in-95" darkMode={darkMode} onClick={e => e.stopPropagation()}>
+                        <h3 className="text-2xl font-black mb-8 text-center text-inherit">{t('appLanguage')}</h3>
+                        <div className="grid grid-cols-2 md:grid-cols-3 gap-4">
+                            {[
+                                { id: 'PT', flag: '🇵🇹', label: t('portuguese') },
+                                { id: 'EN', flag: '🇬🇧', label: t('english') },
+                                { id: 'ES', flag: '🇪🇸', label: t('spanish') },
+                                { id: 'FR', flag: '🇫🇷', label: t('french') },
+                                { id: 'DE', flag: '🇩🇪', label: t('german') }
+                            ].map(lang => (
+                                <button
+                                    key={lang.id}
+                                    onClick={() => { setLanguage(lang.id); setShowLangModal(false); }}
+                                    className={`p-6 rounded-2xl flex flex-col items-center justify-center gap-4 transition-all ${language === lang.id ? 'bg-primary-600 text-white shadow-xl shadow-primary-600/30 scale-105' : 'bg-gray-50 text-gray-600 hover:bg-gray-100 dark:bg-gray-800 dark:text-gray-300 dark:hover:bg-gray-700'}`}
+                                >
+                                    <span className="text-4xl">{lang.flag}</span>
+                                    <span className="font-black text-[10px] uppercase tracking-widest text-center">{lang.label}</span>
+                                </button>
+                            ))}
+                        </div>
+                        <button onClick={() => setShowLangModal(false)} className="w-full mt-8 py-4 uppercase font-black text-[10px] tracking-widest text-gray-500 hover:text-gray-900 dark:hover:text-white transition-colors">
+                            {t('cancel')}
+                        </button>
+                    </Card>
+                </div>
+            )}
         </div>
     );
 }
diff --git a/src/lib/i18n.js b/src/lib/i18n.js
index e70a230..57a5562 100644
--- a/src/lib/i18n.js
+++ b/src/lib/i18n.js
@@ -92,7 +92,14 @@ export const translations = {
         colorBlue: "Azul",
         userTitle: "Utilizador",
         themeColor: "Cor do Tema",
-        personalizeColor: "Personalizar a cor"
+        personalizeColor: "Personalizar a cor",
+        profileInfo: "Informações da Conta",
+        username: "Nome de Utilizador",
+        fullName: "Nome Completo",
+        dob: "Data de Nascimento",
+        bio: "Bio / Sobre mim",
+        optional: "(Opcional)",
+        saving: "A guardar..."
     },
     EN: {
         loginModeIntro: "The Future of Your Style",
@@ -187,7 +194,14 @@ export const translations = {
         colorBlue: "Blue",
         userTitle: "User",
         themeColor: "Theme Color",
-        personalizeColor: "Personalize the color"
+        personalizeColor: "Personalize the color",
+        profileInfo: "Account Information",
+        username: "Username",
+        fullName: "Full Name",
+        dob: "Date of Birth",
+        bio: "Bio / About me",
+        optional: "(Optional)",
+        saving: "Saving..."
     },
     ES: {
         loginModeIntro: "El Futuro de Tu Estilo",
@@ -282,7 +296,14 @@ export const translations = {
         colorBlue: "Azul",
         userTitle: "Usuario",
         themeColor: "Color del Tema",
-        personalizeColor: "Personaliza el color"
+        personalizeColor: "Personaliza el color",
+        profileInfo: "Información de la Cuenta",
+        username: "Nombre de Usuario",
+        fullName: "Nombre Completo",
+        dob: "Fecha de Nacimiento",
+        bio: "Bio / Sobre mí",
+        optional: "(Opcional)",
+        saving: "Guardando..."
     },
     FR: {
         loginModeIntro: "Le Futur de Ton Style",
@@ -377,7 +398,14 @@ export const translations = {
         colorBlue: "Bleu",
         userTitle: "Utilisateur",
         themeColor: "Couleur du Thème",
-        personalizeColor: "Personnaliser la couleur"
+        personalizeColor: "Personnaliser la couleur",
+        profileInfo: "Informations du Compte",
+        username: "Nom d'utilisateur",
+        fullName: "Nom Complet",
+        dob: "Date de Naissance",
+        bio: "Bio / À propos",
+        optional: "(Optionnel)",
+        saving: "Enregistrement..."
     },
     DE: {
         loginModeIntro: "Die Zukunft deines Stils",
@@ -472,6 +500,13 @@ export const translations = {
         colorBlue: "Blau",
         userTitle: "Benutzer",
         themeColor: "Themenfarbe",
-        personalizeColor: "Farbe anpassen"
+        personalizeColor: "Farbe anpassen",
+        profileInfo: "Kontoinformationen",
+        username: "Benutzername",
+        fullName: "Vollständiger Name",
+        dob: "Geburtsdatum",
+        bio: "Biografie / Über mich",
+        optional: "(Optional)",
+        saving: "Speichern..."
     }
 };