import React, { useState, useEffect, useRef } from 'react';
        import { createRoot } from 'react-dom/client';
        import {
            Building2, Users, Wallet, Wrench, Bell, Search, Plus, Menu, X,
            TrendingUp, TrendingDown, CheckCircle, AlertCircle, Clock, LogOut,
            Edit2, Trash2, Save, Filter, MoreVertical, FileText,
            Dumbbell, PartyPopper, Trophy, Map, Calendar, MapPin, Info,
            MessageCircle, Paperclip, Send
        } from 'lucide-react';

        import { app } from './firebase.js';
        import { getAuth, signInWithEmailAndPassword, createUserWithEmailAndPassword } from 'https://www.gstatic.com/firebasejs/12.1.0/firebase-auth.js';
        import { getDatabase, ref, push, set, onValue, remove, update } from 'https://www.gstatic.com/firebasejs/12.1.0/firebase-database.js';

        class ErrorBoundary extends React.Component {
            constructor(props) {
                super(props);
                this.state = { hasError: false, error: null, errorInfo: null };
            }
            static getDerivedStateFromError(error) {
                return { hasError: true };
            }
            componentDidCatch(error, errorInfo) {
                this.setState({ error, errorInfo });
                console.error("ErrorBoundary caught an error:", error, errorInfo);
            }
            render() {
                if (this.state.hasError) {
                    return (
                        <div style={{ padding: '20px', backgroundColor: '#fee2e2', color: '#991b1b', fontFamily: 'sans-serif', height: '100vh' }}>
                            <h1 style={{ fontSize: '24px', fontWeight: 'bold' }}>Algo correu mal (Erro na Aplicação)</h1>
                            <pre style={{ marginTop: '20px', whiteSpace: 'pre-wrap', backgroundColor: '#fef2f2', padding: '15px', border: '1px solid #f87171' }}>
                                {this.state.error && this.state.error.toString()}
                                <br />
                                {this.state.errorInfo && this.state.errorInfo.componentStack}
                            </pre>
                            <button onClick={() => window.location.reload()} style={{ marginTop: '20px', padding: '10px 20px', backgroundColor: '#dc2626', color: 'white', border: 'none', borderRadius: '5px', cursor: 'pointer' }}>Recarregar Página</button>
                        </div>
                    );
                }
                return this.props.children;
            }
        }

        const auth = getAuth(app);
        const db = getDatabase(app);

        const INITIAL_RESIDENTS = [
            { id: 1, unit: '1º Esq', name: 'Ana Silva', contact: '912 345 678', email: 'ana.silva@email.com', status: 'Pago', pending: 0, role: 'morador' },
            { id: 2, unit: '1º Dto', name: 'Carlos Santos', contact: '965 432 109', email: 'carlos.s@email.com', status: 'Pendente', pending: 45.00, role: 'morador' },
            { id: 3, unit: '2º Esq', name: 'Maria Pereira', contact: '933 221 110', email: 'maria.p@email.com', status: 'Pago', pending: 0, role: 'morador' },
            { id: 4, unit: '2º Dto', name: 'João Ferreira', contact: '918 765 432', email: 'joao.f@email.com', status: 'Atrasado', pending: 135.00, role: 'morador' },
            { id: 5, unit: '3º Esq', name: 'Sofia Costa', contact: '922 334 455', email: 'sofia.c@email.com', status: 'Pago', pending: 0, role: 'morador' },
        ];

        const INITIAL_FINANCES = [
            { id: 1, type: 'income', category: 'Quotas Mensais', date: '2023-10-01', amount: 2250.00, desc: 'Pagamento de quotas Outubro' },
            { id: 2, type: 'expense', category: 'Limpeza', date: '2023-10-02', amount: 450.00, desc: 'Serviço de Limpeza Semanal' },
            { id: 3, type: 'expense', category: 'Elevadores', date: '2023-10-05', amount: 120.00, desc: 'Manutenção Mensal' },
            { id: 4, type: 'income', category: 'Aluguer Salão', date: '2023-10-10', amount: 50.00, desc: 'Reserva 2º Dto' },
            { id: 5, type: 'expense', category: 'Jardinagem', date: '2023-10-12', amount: 85.00, desc: 'Poda de árvores' },
        ];

        const INITIAL_ISSUES = [
            { id: 1, title: 'Lâmpada fundida no Hall', location: 'R/C', status: 'Novo', priority: 'Baixa', date: '2023-10-15' },
            { id: 2, title: 'Porta da garagem não fecha', location: 'Garagem -1', status: 'Em Progresso', priority: 'Alta', date: '2023-10-14' },
            { id: 3, title: 'Infiltração no teto', location: '3º Dto', status: 'Resolvido', priority: 'Média', date: '2023-10-10' },
        ];

        const INITIAL_BOOKINGS = [
            { id: 1, facility: 'hall', facilityName: 'Salão de Festas', date: '2023-10-25', time: '14:00 - 20:00', resident: 'Ana Silva', status: 'Confirmado', cost: 50 },
            { id: 2, facility: 'gym', facilityName: 'Ginásio', date: '2023-10-20', time: '09:00 - 10:00', resident: 'Carlos Santos', status: 'Confirmado', cost: 0 },
            { id: 3, facility: 'park', facilityName: 'Parque de Jogos', date: '2023-10-22', time: '18:00 - 19:00', resident: 'Sofia Costa', status: 'Pendente', cost: 10 },
        ];

        const INITIAL_NOTIFICATIONS = [
            { id: 1, message: 'Nova reserva: Salão de Festas (25 Out)', time: 'Há 1 hora', type: 'info', read: false },
            { id: 2, message: 'Nova quota paga: Maria Pereira', time: 'Há 2 horas', type: 'success', read: false },
            { id: 3, message: 'Manutenção urgente reportada', time: 'Há 5 horas', type: 'warning', read: false },
        ];

        // --- VALIDAÇÕES OFICIAIS ---
        function validarNIF(nif) {
            nif = String(nif).replace(/\s+/g, '');
            return /^\d{9}$/.test(nif);
        }

        function validarDocumento(doc) {
            let docStr = doc.replace(/[\s-]/g, '').toUpperCase();
            
            // Muitos utilizadores inserem apenas os 8 dígitos do NIC, o que não tem check-digit na própria string
            if (/^\d{8}$/.test(docStr)) {
                return true; 
            }

            if (/^\d{9}$/.test(docStr)) {
                let checkDigitValue = parseInt(docStr.charAt(docStr.length - 1), 10);
                let soma = 0;
                for (let i = 0; i < docStr.length - 1; i++) {
                    soma += parseInt(docStr.charAt(i), 10) * (docStr.length - i);
                }
                let resto = soma % 11;
                let expectedDigit = (resto === 0 || resto === 1) ? 0 : (11 - resto);
                return expectedDigit === checkDigitValue;
            }
            if (docStr.length === 12) {
                let sum = 0;
                let isSecond = false;
                for (let i = docStr.length - 1; i >= 0; i--) {
                    let charCode = docStr.charCodeAt(i);
                    let val = 0;
                    if (charCode >= 48 && charCode <= 57) val = charCode - 48;
                    else if (charCode >= 65 && charCode <= 90) val = charCode - 55;
                    else return false;

                    if (isSecond) {
                        val *= 2;
                        if (val >= 36) val -= 36;
                    }
                    sum += val;
                    isSecond = !isSecond;
                }
                return (sum % 36) === 0;
            }
            return false;
        }

        const Modal = ({ isOpen, onClose, title, children }) => {
            if (!isOpen) return null;
            return (
                <div className="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/60 backdrop-blur-sm animate-fade-in">
                    <div className="bg-white dark:bg-dark-surface rounded-xl shadow-2xl w-full max-w-lg overflow-hidden animate-slide-up transition-colors">
                        <div className="flex justify-between items-center p-6 border-b border-slate-100 dark:border-dark-border bg-slate-50 dark:bg-dark-bg">
                            <h3 className="font-bold text-lg text-slate-800 dark:text-white">{title}</h3>
                            <button onClick={onClose} className="text-slate-400 hover:text-slate-600 dark:hover:text-slate-200 transition-colors">
                                <X size={24} />
                            </button>
                        </div>
                        <div className="p-6 max-h-[80vh] overflow-y-auto">{children}</div>
                    </div>
                </div>
            );
        };

        const InputGroup = ({ label, name, type = 'text', value, onChange, placeholder, required = false, options = null, disabled = false }) => (
            <div className="mb-4">
                <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1">
                    {label} {required && <span className="text-red-500">*</span>}
                </label>
                {options ? (
                    <select
                        name={name}
                        value={value}
                        onChange={onChange}
                        disabled={disabled}
                        className="w-full px-3 py-2 border border-slate-300 dark:border-dark-border rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent bg-white dark:bg-dark-card dark:text-white disabled:bg-slate-100 dark:disabled:bg-slate-800 disabled:text-slate-500 dark:disabled:text-slate-400 transition-colors"
                    >
                        {options.map(opt => (
                            <option key={opt.value} value={opt.value} className="dark:bg-dark-bg">{opt.label}</option>
                        ))}
                    </select>
                ) : (
                    <input
                        type={type}
                        name={name}
                        value={value}
                        onChange={onChange}
                        placeholder={placeholder}
                        required={required}
                        disabled={disabled}
                        className="w-full px-3 py-2 border border-slate-300 dark:border-dark-border rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent bg-white dark:bg-dark-card dark:text-white dark:placeholder-slate-500 disabled:bg-slate-100 dark:disabled:bg-slate-800 disabled:text-slate-500 dark:disabled:text-slate-400 transition-colors"
                    />
                )}
            </div>
        );

        const SidebarItem = ({ icon: Icon, label, active, onClick }) => (
            <button
                onClick={onClick}
                className={`flex items-center w-full gap-3 px-4 py-3 text-sm font-medium transition-all rounded-lg ${active
                    ? 'bg-blue-600 text-white shadow-md translate-x-1'
                    : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-dark-card hover:text-blue-600 dark:hover:text-blue-400'
                    }`}
            >
                <Icon size={20} />
                <span>{label}</span>
            </button>
        );

        const Card = ({ title, value, icon: Icon, trend, trendValue, color, subtitle }) => (
            <div className="bg-white dark:bg-dark-surface p-6 rounded-xl shadow-sm border border-slate-100 dark:border-dark-border hover:shadow-md transition-all">
                <div className="flex justify-between items-start">
                    <div>
                        <p className="text-sm font-medium text-slate-500 dark:text-dark-mute">{title}</p>
                        <h3 className="text-2xl font-bold text-slate-800 dark:text-white mt-2">{value}</h3>
                    </div>
                    <div className={`p-3 rounded-lg ${color}`}>
                        <Icon size={24} className="text-white" />
                    </div>
                </div>
                <div className="mt-4 flex items-center text-sm justify-between">
                    <div className="flex items-center">
                        {trend === 'up' ? (
                            <span className="text-green-500 flex items-center font-medium bg-green-50 dark:bg-green-900/20 px-2 py-0.5 rounded-full">
                                <TrendingUp size={14} className="mr-1" /> {trendValue}
                            </span>
                        ) : trend === 'down' ? (
                            <span className="text-red-500 flex items-center font-medium bg-red-50 dark:bg-red-900/20 px-2 py-0.5 rounded-full">
                                <TrendingDown size={14} className="mr-1" /> {trendValue}
                            </span>
                        ) : (
                            <span className="text-slate-400 dark:text-slate-500 font-medium bg-slate-50 dark:bg-dark-card px-2 py-0.5 rounded-full">
                                —
                            </span>
                        )}
                    </div>
                    <span className="text-slate-400 dark:text-dark-mute text-xs">{subtitle || 'vs. mês passado'}</span>
                </div>
            </div>
        );

        const Badge = ({ status }) => {
            const styles = {
                'Pago': 'bg-green-100 text-green-700 border-green-200 dark:bg-green-900/30 dark:text-green-400 dark:border-green-800',
                'Em dia': 'bg-green-100 text-green-700 border-green-200 dark:bg-green-900/30 dark:text-green-400 dark:border-green-800',
                'Resolvido': 'bg-green-100 text-green-700 border-green-200 dark:bg-green-900/30 dark:text-green-400 dark:border-green-800',
                'Receita': 'bg-green-100 text-green-700 border-green-200 dark:bg-green-900/30 dark:text-green-400 dark:border-green-800',
                'Confirmado': 'bg-green-100 text-green-700 border-green-200 dark:bg-green-900/30 dark:text-green-400 dark:border-green-800',
                'Pendente': 'bg-yellow-100 text-yellow-700 border-yellow-200 dark:bg-yellow-900/30 dark:text-yellow-400 dark:border-yellow-800',
                'Em Validação': 'bg-orange-100 text-orange-700 border-orange-200 dark:bg-orange-900/30 dark:text-orange-400 dark:border-orange-800',
                'Em Progresso': 'bg-blue-100 text-blue-700 border-blue-200 dark:bg-blue-900/30 dark:text-blue-400 dark:border-blue-800',
                'Média': 'bg-orange-100 text-orange-700 border-orange-200 dark:bg-orange-900/30 dark:text-orange-400 dark:border-orange-800',
                'Atrasado': 'bg-red-100 text-red-700 border-red-200 dark:bg-red-900/30 dark:text-red-400 dark:border-red-800',
                'Despesa': 'bg-red-100 text-red-700 border-red-200 dark:bg-red-900/30 dark:text-red-400 dark:border-red-800',
                'Alta': 'bg-red-100 text-red-700 border-red-200 dark:bg-red-900/30 dark:text-red-400 dark:border-red-800',
                'Novo': 'bg-purple-100 text-purple-700 border-purple-200 dark:bg-purple-900/30 dark:text-purple-400 dark:border-purple-800',
                'Baixa': 'bg-blue-100 text-blue-700 border-blue-200 dark:bg-blue-900/30 dark:text-blue-400 dark:border-blue-800',
            };

            return (
                <span className={`px-2.5 py-1 rounded-full text-xs font-semibold border ${styles[status] || 'bg-gray-100 text-gray-700 border-gray-200 dark:bg-gray-800 dark:text-gray-300 dark:border-gray-700'}`}>
                    {status}
                </span>
            );
        };

        const LoginView = ({ onLogin }) => {
            const [email, setEmail] = useState('');
            const [password, setPassword] = useState('');
            const [error, setError] = useState('');
            const [isLoading, setIsLoading] = useState(false);

            const handleSubmit = async (e) => {
                e.preventDefault();
                if (isLoading) return;
                
                setError('');
                setIsLoading(true);
                
                const success = await onLogin(email, password);
                
                setIsLoading(false);
                if (!success) {
                    setError('Email ou Palavra-passe incorreta');
                    setTimeout(() => {
                        setError('');
                    }, 5000);
                }
            };

            return (
                <div className="min-h-screen flex items-center justify-center bg-slate-100 dark:bg-dark-bg p-4 transition-colors duration-300 font-sans">
                    <div className="bg-white dark:bg-dark-surface p-8 rounded-xl shadow-2xl w-full max-w-md animate-fade-in border border-slate-100 dark:border-dark-border">
                        <div className="text-center mb-8">
                            <div className="inline-flex p-3 bg-blue-100 dark:bg-blue-900/30 rounded-full mb-4 text-blue-600 dark:text-blue-400">
                                <Building2 size={32} />
                            </div>
                            <h1 className="text-2xl font-bold text-slate-800 dark:text-white">MyCondominium</h1>
                            <p className="text-slate-500 dark:text-gray-400 mt-2">Portal de Gestão</p>
                        </div>

                        <form onSubmit={handleSubmit} className="space-y-4">
                            <div>
                                <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1">Email</label>
                                <input
                                    type="email"
                                    value={email}
                                    onChange={(e) => setEmail(e.target.value)}
                                    className="w-full px-4 py-3 rounded-lg border border-slate-300 dark:border-dark-border focus:ring-2 focus:ring-blue-500 bg-white dark:bg-dark-card text-slate-900 dark:text-white transition-colors"
                                    placeholder="Endereço de email"
                                    autoFocus
                                    required
                                />
                            </div>
                            <div>
                                <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1">Palavra-passe</label>
                                <input
                                    type="password"
                                    value={password}
                                    onChange={(e) => setPassword(e.target.value)}
                                    className="w-full px-4 py-3 rounded-lg border border-slate-300 dark:border-dark-border focus:ring-2 focus:ring-blue-500 bg-white dark:bg-dark-card text-slate-900 dark:text-white transition-colors"
                                    placeholder="Senha de acesso"
                                    required
                                />
                            </div>
                            {error && (
                                <div className="p-3 bg-red-50 dark:bg-red-900/20 text-red-600 dark:text-red-400 text-sm rounded-lg flex items-center gap-2 animate-fade-in">
                                    <AlertCircle size={16} />
                                    {error}
                                </div>
                            )}
                            <div className="space-y-4">
                                <button type="submit" disabled={isLoading} className={`w-full ${isLoading ? 'bg-blue-400 dark:bg-blue-600/50 cursor-not-allowed' : 'bg-blue-600 hover:bg-blue-700 shadow-lg shadow-blue-500/30'} text-white font-bold py-3 rounded-lg transition-colors flex justify-center items-center gap-2`}>
                                    {isLoading ? (
                                        <>
                                            <div className="w-5 h-5 border-2 border-white/30 border-t-white rounded-full animate-spin"></div>
                                            A entrar...
                                        </>
                                    ) : (
                                        'Entrar'
                                    )}
                                </button>
                            </div>
                        </form>
                    </div>
                </div>
            );
        };

        function App() {
            const [activeTab, setActiveTab] = useState('dashboard');
            const [isSidebarOpen, setSidebarOpen] = useState(false);
            const [searchQuery, setSearchQuery] = useState('');
            const [theme, setTheme] = useState('system'); 

            const [isAuthenticated, setIsAuthenticated] = useState(() => {
                return sessionStorage.getItem('condo_auth') === 'true';
            });
            const [userRole, setUserRole] = useState(() => {
                return sessionStorage.getItem('condo_role') || 'morador';
            });
            const [currentUserName, setCurrentUserName] = useState(() => {
                return sessionStorage.getItem('condo_user_name') || 'Utilizador';
            });
            const [currentUserId, setCurrentUserId] = useState(() => {
                return sessionStorage.getItem('condo_user_id') || '0';
            });
            const [userStatus, setUserStatus] = useState(() => {
                return sessionStorage.getItem('condo_user_status') || 'aprovado';
            });


            const handleLogin = async (email, password) => {
                try {
                    const userCredential = await signInWithEmailAndPassword(auth, email, password);
                    let role = 'morador';
                    let userName = 'Utilizador';
                    let userId = userCredential.user.uid;
                    let status = 'aprovado';
                    
                    if (email.toLowerCase().includes('admin')) {
                        role = 'admin';
                        userName = 'Administração';
                    } else {
                        const residentUser = residents.find(r => r.id === userId || (r.email && r.email.toLowerCase() === email.toLowerCase()));
                        if (residentUser) {
                            role = residentUser.role || 'morador';
                            userName = residentUser.name + (residentUser.unit && residentUser.unit !== 'Pendente' ? ` (${residentUser.unit})` : '');
                            userId = residentUser.id || userId;
                            status = residentUser.status || 'aprovado';
                        } else {
                            status = 'pendente'; // Fallback if missing
                        }
                    }
                    sessionStorage.setItem('condo_auth', 'true');
                    sessionStorage.setItem('condo_role', role);
                    sessionStorage.setItem('condo_user_name', userName);
                    sessionStorage.setItem('condo_user_id', userId);
                    sessionStorage.setItem('condo_user_status', status);
                    setIsAuthenticated(true);
                    setUserRole(role);
                    setCurrentUserName(userName);
                    setCurrentUserId(userId);
                    setUserStatus(status);
                    return true;
                } catch (error) {
                    console.log("Firebase Auth falhou, a tentar conta local...", error);
                    let role = null;
                    let userName = 'Utilizador';
                    let userId = 'local_' + Date.now();
                    
                    let status = 'aprovado';
                    
                    if (email === 'administradores@gmail.com' && password === 'admin123') {
                        role = 'admin';
                        userName = 'Administração';
                        userId = 'admin_001';
                    } else {
                        const residentUser = residents.find(r => r.email && r.email.toLowerCase() === email.toLowerCase());
                        if (residentUser && (password === residentUser.password || (!residentUser.password && password === residentUser.contact) || password === '1234')) {
                            role = residentUser.role || 'morador';
                            userName = residentUser.name + (residentUser.unit && residentUser.unit !== 'Pendente' ? ` (${residentUser.unit})` : '');
                            userId = residentUser.id || userId;
                            status = residentUser.status || 'aprovado';
                        }
                    }
                    
                    if (role) {
                        sessionStorage.setItem('condo_auth', 'true');
                        sessionStorage.setItem('condo_role', role);
                        sessionStorage.setItem('condo_user_name', userName);
                        sessionStorage.setItem('condo_user_id', userId);
                        sessionStorage.setItem('condo_user_status', status);
                        setIsAuthenticated(true);
                        setUserRole(role);
                        setCurrentUserName(userName);
                        setCurrentUserId(userId);
                        setUserStatus(status);
                        return true;
                    }
                    return false;
                }
            };

            const handleLogout = () => {
                if (window.confirm('Tem a certeza que deseja terminar sessão?')) {
                    sessionStorage.removeItem('condo_auth');
                    sessionStorage.removeItem('condo_role');
                    sessionStorage.removeItem('condo_user_name');
                    sessionStorage.removeItem('condo_user_id');
                    sessionStorage.removeItem('condo_user_status');
                    setIsAuthenticated(false);
                    setUserRole(null);
                    setCurrentUserName('Utilizador');
                    setCurrentUserId('0');
                    setUserStatus('aprovado');
                    setActiveTab('dashboard');
                }
            };

            const [residents, setResidents] = useState([]);
            const [finances, setFinances] = useState([]);
            const [issues, setIssues] = useState([]);
            const [bookings, setBookings] = useState([]);
            const [invoices, setInvoices] = useState([]);
            const [faturas, setFaturas] = useState([]);
            const [messages, setMessages] = useState([]);
            const [newMessageText, setNewMessageText] = useState('');
            const [activeChat, setActiveChat] = useState({ type: 'global', id: 'global', name: 'Fórum do Condomínio' });
            const [chatGroups, setChatGroups] = useState([]);
            const [isCreateGroupModalOpen, setIsCreateGroupModalOpen] = useState(false);
            const [newGroupName, setNewGroupName] = useState('');
            const [newGroupMembers, setNewGroupMembers] = useState([]);

            useEffect(() => {
                const loadData = (path, setter, sortFunc = null) => {
                    return onValue(ref(db, path), (snapshot) => {
                        const data = snapshot.val();
                        if (data) {
                            let parsed = Object.entries(data).map(([id, val]) => {
                                if (path === 'faturas' && val.status === 'Em Validação') {
                                    return { id, ...val, status: 'Pago' };
                                }
                                return { id, ...val };
                            });

                            if (userRole !== 'admin' && (path === 'manutencao' || path === 'reservas')) {
                                parsed = parsed.filter(item => item.moradorId === currentUserId);
                            }

                            if (sortFunc) parsed = parsed.sort(sortFunc);
                            setter(parsed);
                        } else {
                            setter([]);
                        }
                    }, (error) => console.error(`Erro ao carregar ${path}:`, error));
                };

                const unsubResidents = loadData('condominos', setResidents);
                const unsubFinances = loadData('financas', setFinances, (a,b) => new Date(b.date) - new Date(a.date));
                const unsubIssues = loadData('manutencao', setIssues, (a,b) => new Date(b.date) - new Date(a.date));
                const unsubBookings = loadData('reservas', setBookings, (a,b) => new Date(a.date) - new Date(b.date));
                const unsubInvoices = loadData('faturacao', setInvoices, (a,b) => new Date(b.date) - new Date(a.date));
                const unsubFaturas = loadData('faturas', setFaturas, (a,b) => new Date(b.dataVencimento) - new Date(a.dataVencimento));
                const unsubGroups = loadData('grupos_chat', setChatGroups);

                return () => {
                    unsubResidents();
                    unsubFinances();
                    unsubIssues();
                    unsubBookings();
                    unsubInvoices();
                    unsubFaturas();
                    unsubGroups();
                };
            }, []);

            useEffect(() => {
                if (!isAuthenticated || !currentUserId) {
                    setNotificationsList([]);
                    return;
                }
                
                const targetFolder = userRole === 'admin' ? 'admin' : currentUserId;
                const path = `notificacoes/${targetFolder}`;
                
                const unsub = onValue(ref(db, path), (snapshot) => {
                    const data = snapshot.val();
                    if (data) {
                        let parsed = Object.entries(data).map(([id, val]) => ({ id, ...val }));
                        parsed = parsed.sort((a,b) => b.timestamp - a.timestamp);
                        setNotificationsList(parsed);
                    } else {
                        setNotificationsList([]);
                    }
                }, (error) => console.error(`Erro ao carregar notificações:`, error));
                
                return () => unsub();
            }, [isAuthenticated, currentUserId, userRole]);

            useEffect(() => {
                let path = 'mural_mensagens';
                if (activeChat.type === 'private') {
                    path = `mensagens_privadas/${[currentUserId, activeChat.id].sort().join('_')}`;
                } else if (activeChat.type === 'group') {
                    path = `mensagens_grupo/${activeChat.id}`;
                }
                
                const unsub = onValue(ref(db, path), (snapshot) => {
                    const data = snapshot.val();
                    if (data) {
                        let parsed = Object.entries(data).map(([id, val]) => ({ id, ...val }));
                        parsed = parsed.sort((a,b) => a.timestamp - b.timestamp);
                        setMessages(parsed);
                    } else {
                        setMessages([]);
                    }
                }, (error) => console.error(`Erro ao carregar mensagens de ${path}:`, error));
                
                return () => unsub();
            }, [activeChat, currentUserId]);
            const [notificationsList, setNotificationsList] = useState([]);
            const [isNotificationsOpen, setNotificationsOpen] = useState(false);

            const [activeModal, setActiveModal] = useState(null);
            const [editingItem, setEditingItem] = useState(null);

            const [notification, setNotification] = useState(null);

            const notificationRef = useRef(null);

            const initialResidentForm = { unit: '', name: '', contact: '', email: '', status: 'Pago', pending: 0, role: 'morador' };
            const initialFinanceForm = { type: 'expense', category: '', amount: '', desc: '', date: new Date().toISOString().split('T')[0] };
            const initialIssueForm = { title: '', location: '', priority: 'Média', status: 'Novo', date: new Date().toISOString().split('T')[0] };
            const initialBookingForm = { facility: 'gym', date: new Date().toISOString().split('T')[0], time: '', resident: '', cost: 0 };
            const initialFaturaForm = { moradorId: '', categoria: '', valor: '', dataVencimento: new Date().toISOString().split('T')[0] };

            const [formData, setFormData] = useState({});

            useEffect(() => {
                const root = window.document.documentElement;
                root.classList.remove('dark');

                if (theme === 'dark') {
                    root.classList.add('dark');
                } else if (theme === 'system') {
                    if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
                        root.classList.add('dark');
                    }
                }
            }, [theme]);

            useEffect(() => {
                if (notification) {
                    const timer = setTimeout(() => setNotification(null), 3000);
                    return () => clearTimeout(timer);
                }
            }, [notification]);

            useEffect(() => {
                function handleClickOutside(event) {
                    if (notificationRef.current && !notificationRef.current.contains(event.target)) {
                        setNotificationsOpen(false);
                    }
                }
                document.addEventListener("mousedown", handleClickOutside);
                return () => {
                    document.removeEventListener("mousedown", handleClickOutside);
                };
            }, [notificationRef]);

            const toggleSidebar = () => setSidebarOpen(!isSidebarOpen);

            const totalIncome = finances.filter(f => f.type === 'income').reduce((acc, curr) => acc + Number(curr.amount), 0);
            const totalExpense = finances.filter(f => f.type === 'expense').reduce((acc, curr) => acc + Number(curr.amount), 0);
            const balance = totalIncome - totalExpense;
            const activeIssuesCount = issues.filter(i => i.status !== 'Resolvido').length;
            const unreadNotifications = notificationsList.filter(n => !n.read).length;

            const filteredResidents = residents.filter(r =>
                r.name.toLowerCase().includes(searchQuery.toLowerCase()) ||
                r.unit.toLowerCase().includes(searchQuery.toLowerCase())
            );

            const sendSystemNotification = async (message, type = 'info', targetUserId = 'admin') => {
                const newNotif = { timestamp: Date.now(), message, time: 'Agora', type, read: false };
                if (targetUserId === 'todos') {
                    const promises = residents.map(r => push(ref(db, `notificacoes/${r.id}`), newNotif));
                    promises.push(push(ref(db, `notificacoes/admin`), newNotif));
                    await Promise.all(promises);
                } else {
                    await push(ref(db, `notificacoes/${targetUserId}`), newNotif);
                }
            };

            const handleMarkAsRead = async (notifId) => {
                const targetFolder = userRole === 'admin' ? 'admin' : currentUserId;
                const notifRef = ref(db, `notificacoes/${targetFolder}/${notifId}`);
                await update(notifRef, { read: true });
            };

            const showNotification = (message, type = 'success') => {
                setNotification({ message, type });
            };

            const handleClearNotifications = async () => {
                const targetFolder = userRole === 'admin' ? 'admin' : currentUserId;
                await set(ref(db, `notificacoes/${targetFolder}`), null);
                setNotificationsOpen(false);
            };

            const handleOpenModal = (type, item = null, defaultFacility = null) => {
                setEditingItem(item);
                setActiveModal(type);

                if (type === 'resident') {
                    setFormData(item || initialResidentForm);
                } else if (type === 'finance') {
                    setFormData(initialFinanceForm);
                } else if (type === 'issue') {
                    setFormData(initialIssueForm);
                } else if (type === 'emitir_fatura') {
                    setFormData(initialFaturaForm);
                } else if (type === 'booking') {
                    const baseForm = { ...initialBookingForm };
                    if (defaultFacility) baseForm.facility = defaultFacility;
                    
                    // Preenche sempre o nome do utilizador logado por defeito
                    baseForm.resident = currentUserName;
                    
                    setFormData(baseForm);
                }
            };

            const handleCloseModal = () => {
                setActiveModal(null);
                setEditingItem(null);
                setFormData({});
            };

            const handleInputChange = (e) => {
                const { name, value } = e.target;
                setFormData(prev => {
                    const newData = { ...prev, [name]: value };
                    if (name === 'facility' || name === 'time') {
                        let cost = 0;
                        if (newData.facility === 'hall') cost = 50;
                        if (newData.facility === 'park') cost = 10;
                        newData.cost = cost;
                    }
                    return newData;
                });
            };

            const handleToggleRole = async (id) => {
                try {
                    const resident = residents.find(r => r.id === id);
                    if (resident) {
                        const newRole = resident.role === 'admin' ? 'morador' : 'admin';
                        const residentRef = ref(db, `condominos/${id}`);
                        await set(residentRef, { ...resident, role: newRole });
                        showNotification('Permissões de utilizador atualizadas', 'success');
                    }
                } catch (error) {
                    console.error("Erro ao atualizar permissão:", error);
                    showNotification("Erro ao atualizar permissão.", "error");
                }
            };

            const handleSaveResident = async (e) => {
                e.preventDefault();
                try {
                    if (editingItem) {
                        const residentRef = ref(db, `condominos/${editingItem.id}`);
                        const updatedData = {
                            ...editingItem,
                            unit: formData.unit || '',
                            name: formData.name || '',
                            contact: formData.contact || '',
                            email: formData.email || '',
                            status: formData.status || 'Pago',
                            pending: Number(formData.pending) || 0,
                            role: formData.role || 'morador'
                        };
                        if (formData.password) {
                            updatedData.password = formData.password;
                        }
                        await set(residentRef, updatedData);
                        showNotification(`Condómino ${formData.name} atualizado`);
                    } else {
                        const residentsListRef = ref(db, 'condominos');
                        const newResidentRef = push(residentsListRef);
                        await set(newResidentRef, {
                            unit: formData.unit || '',
                            name: formData.name || '',
                            contact: formData.contact || '',
                            email: formData.email || '',
                            password: formData.password || '1234',
                            status: formData.status || 'Pago',
                            pending: Number(formData.pending) || 0,
                            role: formData.role || 'morador'
                        });
                        showNotification(`Novo condómino ${formData.name} adicionado`);
                    }
                    handleCloseModal();
                } catch (error) {
                    console.error("Erro ao guardar no Firebase:", error);
                    showNotification("Erro ao guardar os dados.", "error");
                }
            };

            const handleDeleteResident = async (id) => {
                if (window.confirm('Tem a certeza que deseja eliminar este condómino?')) {
                    try {
                        const residentRef = ref(db, `condominos/${id}`);
                        await remove(residentRef);
                        showNotification('Condómino removido', 'error');
                    } catch (error) {
                        console.error("Erro ao eliminar no Firebase:", error);
                        showNotification("Erro ao eliminar.", "error");
                    }
                }
            };

            const handleSaveFinance = async (e) => {
                e.preventDefault();
                if (!formData.amount || !formData.category || !formData.date) {
                    showNotification("Preencha todos os campos obrigatórios.", "error");
                    return;
                }
                try {
                    const amount = Number(formData.amount);
                    const newFinanceRef = push(ref(db, 'financas'));
                    await set(newFinanceRef, { ...formData, amount });
                    
                    if (formData.type === 'expense') {
                        sendSystemNotification(`Nova despesa registada: ${formData.category} - ${amount.toFixed(2)}€`, 'warning', 'admin');
                    } else {
                        sendSystemNotification(`Nova receita registada: ${formData.category} - ${amount.toFixed(2)}€`, 'success', 'admin');
                    }
                    
                    showNotification(`Movimento de ${amount}€ registado`);
                    handleCloseModal();
                } catch (error) {
                    console.error("Erro ao guardar finanças:", error);
                    showNotification("Erro ao guardar movimento.", "error");
                }
            };

            const handleSaveIssue = async (e) => {
                e.preventDefault();
                if (!formData.title || !formData.location) {
                    showNotification("Preencha todos os campos obrigatórios.", "error");
                    return;
                }
                try {
                    const newIssueRef = push(ref(db, 'manutencao'));
                    await set(newIssueRef, { ...formData, moradorId: currentUserId });
                    
                    sendSystemNotification(`Nova ocorrência reportada: ${formData.title} (${formData.location})`, 'warning', 'admin');
                    if (userRole !== 'admin') {
                        sendSystemNotification(`A sua ocorrência "${formData.title}" foi reportada com sucesso.`, 'info', currentUserId);
                    }
                    
                    showNotification('Nova ocorrência reportada', 'warning');
                    handleCloseModal();
                } catch (error) {
                    console.error("Erro ao reportar ocorrência:", error);
                    showNotification("Erro ao reportar ocorrência.", "error");
                }
            };

            const handleSaveFatura = async (e) => {
                e.preventDefault();
                if (!formData.moradorId || !formData.categoria || !formData.valor || !formData.dataVencimento) {
                    showNotification("Preencha todos os campos obrigatórios.", "error");
                    return;
                }
                try {
                    const morador = residents.find(r => r.id === formData.moradorId);
                    if (!morador) return;

                    const valor = Number(formData.valor);
                    const newFaturaRef = push(ref(db, 'faturas'));
                    await set(newFaturaRef, { 
                        moradorId: morador.id,
                        nomeMorador: morador.name,
                        fracao: morador.unit,
                        categoria: formData.categoria,
                        valor: valor,
                        dataVencimento: formData.dataVencimento,
                        status: 'Pendente',
                        dataEmissao: new Date().toISOString().split('T')[0]
                    });

                    const newPending = (Number(morador.pending) || 0) + valor;
                    await set(ref(db, `condominos/${morador.id}/pending`), newPending);

                    sendSystemNotification(`Foi emitida uma nova fatura no valor de ${valor.toFixed(2)}€ (Categoria: ${formData.categoria})`, 'warning', morador.id);
                    sendSystemNotification(`Fatura de ${valor.toFixed(2)}€ emitida para ${morador.name} (${morador.unit})`, 'info', 'admin');

                    showNotification(`Fatura de ${valor.toFixed(2)}€ emitida para ${morador.name}`);
                    handleCloseModal();
                } catch (error) {
                    console.error("Erro ao emitir fatura:", error);
                    showNotification("Erro ao emitir fatura.", "error");
                }
            };

            const handlePayFatura = async (fatura) => {
                try {
                    await set(ref(db, `faturas/${fatura.id}/status`), 'Pago');

                    const morador = residents.find(r => r.id === fatura.moradorId);
                    if (morador) {
                        let newPending = (Number(morador.pending) || 0) - Number(fatura.valor);
                        if (newPending < 0) newPending = 0;
                        await set(ref(db, `condominos/${morador.id}/pending`), newPending);
                    }
                    sendSystemNotification(`O pagamento da sua fatura de ${fatura.categoria} foi concluído!`, 'success', fatura.moradorId);
                    sendSystemNotification(`Pagamento registado para a fatura de ${fatura.categoria} da fração ${morador?.unit || fatura.fracao}.`, 'success', 'admin');
                    showNotification("Pagamento efetuado com sucesso!", "success");
                } catch (error) {
                    console.error("Erro ao pagar fatura:", error);
                    showNotification("Erro ao processar pagamento.", "error");
                }
            };

            const handleApproveFatura = async (fatura) => {
                try {
                    await set(ref(db, `faturas/${fatura.id}/status`), 'Pago');

                    const morador = residents.find(r => r.id === fatura.moradorId);
                    if (morador) {
                        let newPending = (Number(morador.pending) || 0) - Number(fatura.valor);
                        if (newPending < 0) newPending = 0;
                        await set(ref(db, `condominos/${morador.id}/pending`), newPending);
                    }
                    sendSystemNotification(`O seu pagamento da fatura de ${fatura.categoria} foi aprovado!`, 'success', fatura.moradorId);
                    sendSystemNotification(`Pagamento aprovado para a fatura de ${fatura.categoria} da fração ${morador?.unit || fatura.fracao}.`, 'success', 'admin');
                    showNotification("Pagamento aprovado com sucesso!", "success");
                } catch (error) {
                    console.error("Erro ao aprovar fatura:", error);
                    showNotification("Erro ao processar aprovação.", "error");
                }
            };

            const handleResolveIssue = async (id) => {
                try {
                    const issue = issues.find(i => i.id === id);
                    if (issue) {
                        await set(ref(db, `manutencao/${id}`), { ...issue, status: 'Resolvido' });
                        sendSystemNotification(`A manutenção "${issue.title}" foi concluída com sucesso.`, 'success', 'todos');
                        showNotification('Ocorrência resolvida com sucesso');
                    }
                } catch (error) {
                    console.error("Erro ao resolver ocorrência:", error);
                    showNotification("Erro ao resolver ocorrência.", "error");
                }
            };

            const handleSaveBooking = async (e) => {
                e.preventDefault();
                if (!formData.resident || !formData.date || !formData.time) {
                    showNotification("Preencha todos os campos obrigatórios.", "error");
                    return;
                }
                try {
                    const facilityNames = { 'gym': 'Ginásio', 'hall': 'Salão de Festas', 'park': 'Parque de Jogos' };
                    const bookingData = {
                        ...formData,
                        facilityName: facilityNames[formData.facility],
                        status: 'Confirmado',
                        moradorId: currentUserId
                    };
                    
                    const newBookingRef = push(ref(db, 'reservas'));
                    await set(newBookingRef, bookingData);

                    if (bookingData.cost > 0) {
                        const newIncomeRef = push(ref(db, 'financas'));
                        await set(newIncomeRef, {
                            type: 'income',
                            category: `Reserva: ${bookingData.facilityName}`,
                            date: bookingData.date,
                            amount: bookingData.cost,
                            desc: `Reserva por ${bookingData.resident}`
                        });
                    }
                    
                    sendSystemNotification(`Nova reserva: ${bookingData.facilityName} a ${bookingData.date}`, 'info', 'admin');
                    if (userRole !== 'admin') {
                        sendSystemNotification(`A sua reserva para ${bookingData.facilityName} foi confirmada.`, 'success', currentUserId);
                    }

                    showNotification(`Reserva confirmada para ${bookingData.facilityName}`);
                    handleCloseModal();
                } catch (error) {
                    console.error("Erro ao criar reserva:", error);
                    showNotification("Erro ao criar reserva.", "error");
                }
            };

            const handleGenerateInvoice = async (resident) => {
                if (resident.pending <= 0) {
                    showNotification(`Não há dívidas para a fração ${resident.unit}`, 'warning');
                    return;
                }
                try {
                    const newInvoiceRef = push(ref(db, 'faturacao'));
                    await set(newInvoiceRef, {
                        residentId: resident.id,
                        unit: resident.unit,
                        name: resident.name,
                        amount: Number(resident.pending),
                        date: new Date().toISOString().split('T')[0],
                        status: 'Emitida'
                    });
                    
                    sendSystemNotification(`Foi emitida uma nova fatura instantânea no valor de ${Number(resident.pending).toFixed(2)}€`, 'warning', resident.id);
                    sendSystemNotification(`Fatura instantânea gerada para a fração ${resident.unit} no valor de ${Number(resident.pending).toFixed(2)}€`, 'info', 'admin');
                    
                    showNotification(`Fatura instantânea gerada para a fração ${resident.unit}`, 'success');
                } catch (error) {
                    console.error("Erro ao faturar:", error);
                    showNotification("Erro ao gerar fatura.", "error");
                }
            };

            const DashboardView = () => (
                <div className="space-y-6 animate-fade-in">
                    <div className="grid grid-cols-1 md:grid-cols-3 gap-6">
                        {userRole === 'admin' ? (
                            <Card title="Saldo Disponível" value={`${balance.toFixed(2)}€`} icon={Wallet} trend={balance >= 0 ? 'up' : 'down'} trendValue="Atual" color="bg-blue-500" />
                        ) : (
                            <Card title="As Minhas Quotas" value="Em Dia" icon={CheckCircle} trend="up" trendValue="Pago" color="bg-green-500" subtitle="Sem valores pendentes" />
                        )}
                        <Card title="Reservas (Mês)" value={bookings.length} icon={Calendar} trend="up" trendValue="+2" color="bg-purple-500" subtitle="Total agendado" />
                        <Card title="Manutenções Ativas" value={activeIssuesCount} icon={Wrench} trend="up" trendValue="Novas" color="bg-orange-500" subtitle="Em resolução" />
                    </div>

                    <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
                        <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border flex flex-col h-full transition-colors">
                            <div className="p-6 border-b border-slate-100 dark:border-dark-border flex justify-between items-center">
                                <h3 className="font-bold text-lg text-slate-800 dark:text-white">Próximas Reservas</h3>
                                <button className="text-blue-600 dark:text-blue-400 text-sm font-medium" onClick={() => setActiveTab('all_bookings')}>Ver todas as Reservas</button>
                            </div>
                            <div className="p-4 space-y-3">
                                {bookings.slice(0, 4).map(booking => (
                                    <div key={booking.id} className="flex items-center justify-between p-3 border border-slate-100 dark:border-dark-border rounded-lg hover:bg-slate-50 dark:hover:bg-dark-card transition-colors">
                                        <div className="flex items-center gap-3">
                                            <div className={`p-2 rounded-lg ${booking.facility === 'gym' ? 'bg-blue-100 text-blue-600 dark:bg-blue-900/30 dark:text-blue-400' : booking.facility === 'hall' ? 'bg-purple-100 text-purple-600 dark:bg-purple-900/30 dark:text-purple-400' : 'bg-green-100 text-green-600 dark:bg-green-900/30 dark:text-green-400'}`}>
                                                {booking.facility === 'gym' ? <Dumbbell size={18} /> : booking.facility === 'hall' ? <PartyPopper size={18} /> : <Trophy size={18} />}
                                            </div>
                                            <div>
                                                <p className="font-bold text-sm text-slate-800 dark:text-slate-200">{booking.facilityName}</p>
                                                <p className="text-xs text-slate-500 dark:text-slate-400">{booking.date} • {booking.time}</p>
                                            </div>
                                        </div>
                                        <div className="text-right">
                                            <p className="text-sm font-medium text-slate-700 dark:text-slate-300">{booking.resident}</p>
                                            <Badge status={booking.status} />
                                        </div>
                                    </div>
                                ))}
                            </div>
                        </div>

                        <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border flex flex-col h-full transition-colors">
                            <div className="p-6 border-b border-slate-100 dark:border-dark-border flex justify-between items-center">
                                <h3 className="font-bold text-lg text-slate-800 dark:text-white">Quadro de Avisos</h3>
                                <button className="text-sm text-blue-600 dark:text-blue-400" onClick={() => setActiveTab('maintenance')}>{userRole === 'admin' ? 'Gerir' : 'Ver Ocorrências'}</button>
                            </div>
                            <div className="p-4 space-y-3 overflow-y-auto max-h-[350px]">
                                {issues.slice(0, 3).map((issue) => (
                                    <div key={issue.id} className="border border-slate-100 dark:border-dark-border rounded-lg p-4 bg-slate-50 dark:bg-dark-card transition-colors">
                                        <div className="flex justify-between mb-2">
                                            <Badge status={issue.priority} />
                                            <span className="text-xs text-slate-400 dark:text-slate-500">{issue.date}</span>
                                        </div>
                                        <h4 className="font-semibold text-slate-800 dark:text-slate-200">{issue.title}</h4>
                                        <p className="text-xs text-slate-500 dark:text-dark-mute mt-1">{issue.location}</p>
                                    </div>
                                ))}
                            </div>
                        </div>
                    </div>
                </div>
            );

            const BookingView = ({ facilityType, title, icon: Icon, description, priceInfo, color }) => {
                const facilityBookings = bookings.filter(b => b.facility === facilityType);

                return (
                    <div className="animate-fade-in space-y-6">
                        <div className={`bg-white dark:bg-dark-surface p-6 rounded-xl shadow-sm border border-slate-100 dark:border-dark-border flex flex-col md:flex-row gap-6 items-center ${color}`}>
                            <div className="bg-white/20 p-6 rounded-2xl backdrop-blur-sm text-white">
                                <Icon size={48} />
                            </div>
                            <div className="flex-1 text-white">
                                <h2 className="text-2xl font-bold">{title}</h2>
                                <p className="opacity-90 mt-1">{description}</p>
                                <div className="mt-4 flex gap-4 text-sm font-medium bg-black/10 w-fit px-4 py-2 rounded-lg">
                                    <span className="flex items-center gap-2"><Clock size={16} /> Horário: 08:00 - 22:00</span>
                                    <span className="flex items-center gap-2"><Wallet size={16} /> {priceInfo}</span>
                                </div>
                            </div>
                            <button
                                onClick={() => handleOpenModal('booking', null, facilityType)}
                                className="bg-white text-slate-900 px-6 py-3 rounded-lg font-bold hover:bg-slate-50 transition-colors shadow-lg flex items-center gap-2"
                            >
                                <Plus size={20} /> Reservar Agora
                            </button>
                        </div>

                        <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border p-6 transition-colors">
                            <h3 className="font-bold text-lg text-slate-800 dark:text-white mb-4">Agenda de Reservas</h3>
                            {facilityBookings.length === 0 ? (
                                <div className="text-center py-12 text-slate-400 dark:text-dark-mute border-2 border-dashed border-slate-200 dark:border-dark-border rounded-xl">
                                    <Calendar size={48} className="mx-auto mb-2 opacity-20" />
                                    <p>Sem reservas agendadas para este espaço.</p>
                                </div>
                            ) : (
                                <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
                                    {facilityBookings.map(booking => (
                                        <div key={booking.id} className="border border-slate-200 dark:border-dark-border rounded-lg p-4 hover:shadow-md transition-all bg-white dark:bg-dark-card relative overflow-hidden group">
                                            <div className={`absolute top-0 left-0 w-1 h-full ${facilityType === 'gym' ? 'bg-blue-500' : facilityType === 'hall' ? 'bg-purple-500' : 'bg-green-500'}`}></div>
                                            <div className="flex justify-between items-start mb-2 pl-2">
                                                <span className="font-mono text-sm font-bold text-slate-500 dark:text-slate-400">{booking.date}</span>
                                                <Badge status={booking.status} />
                                            </div>
                                            <h4 className="font-bold text-slate-800 dark:text-white text-lg pl-2">{booking.time}</h4>
                                            <p className="text-sm text-slate-600 dark:text-dark-mute pl-2 mt-1 flex items-center gap-2">
                                                <Users size={14} /> {booking.resident}
                                            </p>
                                            {booking.cost > 0 && (
                                                <div className="mt-3 pl-2 pt-3 border-t border-slate-100 dark:border-dark-border text-right">
                                                    <span className="text-xs font-medium text-slate-400 uppercase">Custo:</span>
                                                    <span className="ml-2 font-bold text-slate-800 dark:text-white">{booking.cost}€</span>
                                                </div>
                                            )}
                                        </div>
                                    ))}
                                </div>
                            )}
                        </div>
                    </div>
                );
            };

            const MapView = () => (
                <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden animate-fade-in flex flex-col h-full transition-colors">
                    <div className="p-6 border-b border-slate-100 dark:border-dark-border flex justify-between items-center">
                        <div>
                            <h3 className="font-bold text-lg text-slate-800 dark:text-white">Mapa do Condomínio</h3>
                            <p className="text-sm text-slate-500 dark:text-dark-mute">Plantas e Localizações</p>
                        </div>
                        <div className="flex gap-2">
                            <span className="flex items-center gap-1 text-xs font-medium bg-blue-100 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 px-2 py-1 rounded"><div className="w-2 h-2 rounded-full bg-blue-500"></div> Comum</span>
                            <span className="flex items-center gap-1 text-xs font-medium bg-orange-100 dark:bg-orange-900/30 text-orange-700 dark:text-orange-300 px-2 py-1 rounded"><div className="w-2 h-2 rounded-full bg-orange-500"></div> Blocos</span>
                        </div>
                    </div>

                    <div className="flex-1 p-6 bg-slate-50 dark:bg-dark-bg overflow-auto flex items-center justify-center">
                        <div className="relative w-[800px] h-[500px] bg-white dark:bg-dark-surface border-2 border-slate-300 dark:border-dark-border rounded-xl shadow-xl p-8 transform hover:scale-[1.01] transition-transform duration-500">
                            <div className="absolute inset-0 opacity-5 bg-[linear-gradient(0deg,transparent_24%,#000_25%,#000_26%,transparent_27%,transparent_74%,#000_75%,#000_76%,transparent_77%,transparent),linear-gradient(90deg,transparent_24%,#000_25%,#000_26%,transparent_27%,transparent_74%,#000_75%,#000_76%,transparent_77%,transparent)] bg-[length:50px_50px]"></div>

                            <div className="absolute top-1/2 left-0 w-full h-16 bg-slate-200 dark:bg-dark-card transform -translate-y-1/2 border-y-2 border-slate-300 dark:border-slate-600 border-dashed flex items-center justify-center text-slate-400 font-bold tracking-[1em] opacity-50">VIA CENTRAL</div>

                            <div className="absolute top-10 left-10 w-40 h-40 bg-orange-100 dark:bg-orange-900/40 border-2 border-orange-300 dark:border-orange-700/50 rounded-lg flex flex-col items-center justify-center hover:bg-orange-200 dark:hover:bg-orange-900/60 cursor-pointer transition-colors group">
                                <Building2 size={32} className="text-orange-500 mb-2" />
                                <span className="font-bold text-orange-800 dark:text-orange-200">Bloco A</span>
                                <div className="absolute -bottom-8 opacity-0 group-hover:opacity-100 bg-black text-white text-xs px-2 py-1 rounded transition-opacity">10 andares • 20 Frações</div>
                            </div>

                            <div className="absolute bottom-10 left-10 w-40 h-40 bg-orange-100 dark:bg-orange-900/40 border-2 border-orange-300 dark:border-orange-700/50 rounded-lg flex flex-col items-center justify-center hover:bg-orange-200 dark:hover:bg-orange-900/60 cursor-pointer transition-colors group">
                                <Building2 size={32} className="text-orange-500 mb-2" />
                                <span className="font-bold text-orange-800 dark:text-orange-200">Bloco B</span>
                                <div className="absolute -top-8 opacity-0 group-hover:opacity-100 bg-black text-white text-xs px-2 py-1 rounded transition-opacity">8 andares • 16 Frações</div>
                            </div>

                            <div className="absolute top-10 right-10 w-64 h-48 bg-green-100 dark:bg-green-900/40 border-2 border-green-300 dark:border-green-700/50 rounded-2xl flex flex-col items-center justify-center hover:bg-green-200 dark:hover:bg-green-900/60 cursor-pointer transition-colors group">
                                <Trophy size={40} className="text-green-600 mb-2" />
                                <span className="font-bold text-green-800 dark:text-green-200">Parque de Jogos</span>
                                <span className="text-xs text-green-600 dark:text-green-300">Campo Polidesportivo</span>
                                <div className="absolute -bottom-8 opacity-0 group-hover:opacity-100 bg-black text-white text-xs px-2 py-1 rounded transition-opacity z-10">Clique para reservar</div>
                            </div>

                            <div className="absolute bottom-10 right-10 w-64 h-32 bg-blue-100 dark:bg-blue-900/40 border-2 border-blue-300 dark:border-blue-700/50 rounded-lg flex items-center justify-around hover:bg-blue-200 dark:hover:bg-blue-900/60 cursor-pointer transition-colors">
                                <div className="flex flex-col items-center group">
                                    <PartyPopper size={24} className="text-blue-600 mb-1" />
                                    <span className="text-xs font-bold text-blue-800 dark:text-blue-200">Salão Festas</span>
                                </div>
                                <div className="w-px h-20 bg-blue-300 dark:bg-blue-700"></div>
                                <div className="flex flex-col items-center group">
                                    <Dumbbell size={24} className="text-blue-600 mb-1" />
                                    <span className="text-xs font-bold text-blue-800 dark:text-blue-200">Ginásio</span>
                                </div>
                            </div>

                            <div className="absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2 w-24 h-24 bg-slate-800 dark:bg-slate-700 rounded-full border-4 border-slate-200 dark:border-slate-600 shadow-xl flex flex-col items-center justify-center text-white z-10">
                                <Info size={24} />
                                <span className="text-[10px] mt-1 font-bold">Recepção</span>
                            </div>
                        </div>
                    </div>
                </div>
            );

            const MaintenanceView = () => (
                <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden animate-fade-in flex flex-col h-full transition-colors">
                    <div className="p-6 border-b border-slate-100 dark:border-dark-border flex justify-between items-center">
                        <div>
                            <h3 className="font-bold text-lg text-slate-800 dark:text-white">Manutenção e Ocorrências</h3>
                            <p className="text-sm text-slate-500 dark:text-dark-mute">Gestão de pedidos e reparações</p>
                        </div>
                        {userRole === 'admin' ? (
                            <button
                                className="bg-green-600 text-white px-4 py-2 rounded-lg text-sm font-medium flex items-center gap-2 shadow-sm transition-colors cursor-default"
                            >
                                <CheckCircle size={18} /> Resolver Problemas
                            </button>
                        ) : (
                            <button
                                onClick={() => handleOpenModal('issue')}
                                className="bg-orange-600 text-white px-4 py-2 rounded-lg text-sm font-medium hover:bg-orange-700 flex items-center gap-2 shadow-sm transition-colors"
                            >
                                <Plus size={18} /> Reportar Problema
                            </button>
                        )}
                    </div>

                    <div className="flex-1 overflow-auto p-6 bg-slate-50 dark:bg-dark-bg">
                        {issues.length === 0 ? (
                            <div className="text-center py-12 text-slate-400 dark:text-dark-mute border-2 border-dashed border-slate-200 dark:border-dark-border rounded-xl">
                                <Wrench size={48} className="mx-auto mb-2 opacity-20" />
                                <p>Sem ocorrências registadas.</p>
                            </div>
                        ) : (
                            <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
                                {issues.map(issue => (
                                    <div key={issue.id} className="bg-white dark:bg-dark-surface rounded-lg shadow-sm border border-slate-200 dark:border-dark-border p-5 hover:shadow-md transition-shadow relative overflow-hidden">
                                        <div className={`absolute top-0 left-0 w-1 h-full ${issue.priority === 'Alta' ? 'bg-red-500' :
                                            issue.priority === 'Média' ? 'bg-orange-500' : 'bg-blue-500'
                                            }`}></div>

                                        <div className="flex justify-between items-start mb-3 pl-2">
                                            <Badge status={issue.status} />
                                            <span className="text-xs text-slate-400 dark:text-slate-500 font-mono">{issue.date}</span>
                                        </div>

                                        <h4 className="font-bold text-slate-800 dark:text-white text-lg mb-1 pl-2">{issue.title}</h4>
                                        <p className="text-sm text-slate-600 dark:text-dark-mute mb-4 pl-2 flex items-center gap-2">
                                            <MapPin size={14} /> {issue.location}
                                        </p>

                                        <div className="pt-4 border-t border-slate-100 dark:border-dark-border flex justify-between items-center pl-2">
                                            <span className={`text-xs font-bold px-2 py-1 rounded ${issue.priority === 'Alta' ? 'bg-red-50 dark:bg-red-900/20 text-red-700 dark:text-red-400' :
                                                issue.priority === 'Média' ? 'bg-orange-50 dark:bg-orange-900/20 text-orange-700 dark:text-orange-400' : 'bg-blue-50 dark:bg-blue-900/20 text-blue-700 dark:text-blue-400'
                                                }`}>
                                                Prioridade {issue.priority}
                                            </span>

                                            {userRole === 'admin' && issue.status !== 'Resolvido' && (
                                                <button
                                                    onClick={() => handleResolveIssue(issue.id)}
                                                    className="text-sm text-green-600 dark:text-green-400 font-medium hover:text-green-700 dark:hover:text-green-300 flex items-center gap-1"
                                                >
                                                    <CheckCircle size={16} /> Resolver
                                                </button>
                                            )}
                                        </div>
                                    </div>
                                ))}
                            </div>
                        )}
                    </div>
                </div>
            );

            const ProfileView = ({ theme, setTheme }) => {
                const [activeSection, setActiveSection] = useState('personal');
                
                const isMorador = userRole !== 'admin';
                const [formData, setFormData] = useState({
                    name: 'A carregar...',
                    role: '...',
                    email: '',
                    contact: '',
                    address: ''
                });

                useEffect(() => {
                    if (isMorador) {
                        const currentUserData = residents.find(r => r.id === currentUserId) || {};
                        setFormData({
                            name: currentUserData.name || currentUserName || '',
                            role: `Fração ${currentUserData.unit || 'N/A'}`,
                            email: currentUserData.email || '',
                            contact: currentUserData.contact || '',
                            address: 'Morada do Condomínio'
                        });
                    } else {
                        const adminRef = ref(db, 'configuracoes/admin_profile');
                        const unsub = onValue(adminRef, (snapshot) => {
                            if (snapshot.exists()) {
                                setFormData(snapshot.val());
                            } else {
                                setFormData({
                                    name: 'Administrador do Condomínio',
                                    role: 'Síndico / Gestor',
                                    email: 'admin@mycondominium.pt',
                                    contact: '+351 912 345 678',
                                    address: 'Rua das Flores, nº 123, Escritório 2B'
                                });
                            }
                        });
                        return () => unsub();
                    }
                }, [residents, currentUserId, userRole, currentUserName, isMorador]);

                const handleChange = (field, value) => {
                    setFormData(prev => ({ ...prev, [field]: value }));
                };

                const [passwordData, setPasswordData] = useState({ current: '', new: '', confirm: '' });
                const handlePasswordChange = (field, value) => {
                    setPasswordData(prev => ({ ...prev, [field]: value }));
                };

                const handleSavePassword = async () => {
                    if (passwordData.new !== passwordData.confirm) {
                        showNotification('As novas palavras-passe não coincidem.', 'error');
                        return;
                    }
                    if (passwordData.new.length < 4) {
                        showNotification('A nova palavra-passe deve ter pelo menos 4 caracteres.', 'error');
                        return;
                    }
                    
                    if (isMorador) {
                        const currentUserData = residents.find(r => r.id === currentUserId);
                        const currentPassword = currentUserData.password || currentUserData.contact || '1234';
                        if (passwordData.current !== currentPassword) {
                            showNotification('A palavra-passe atual está incorreta.', 'error');
                            return;
                        }
                        
                        try {
                            await set(ref(db, `condominos/${currentUserData.id}/password`), passwordData.new);
                            showNotification('Palavra-passe alterada com sucesso!', 'success');
                            setPasswordData({ current: '', new: '', confirm: '' });
                            sendSystemNotification('Um utilizador alterou a sua palavra-passe.', 'info', 'admin');
                        } catch (error) {
                            console.error("Erro ao alterar palavra-passe:", error);
                            showNotification('Erro ao alterar a palavra-passe.', 'error');
                        }
                    } else {
                        showNotification('A conta de administrador usa o Firebase Auth para gerir passwords.', 'info');
                    }
                };

                const handleSave = async () => {
                    if (isMorador) {
                        const currentUserData = residents.find(r => r.id === currentUserId);
                        if (currentUserData && currentUserData.id) {
                            try {
                                await set(ref(db, `condominos/${currentUserData.id}/email`), formData.email);
                                await set(ref(db, `condominos/${currentUserData.id}/contact`), formData.contact);
                                showNotification('Dados atualizados com sucesso!', 'success');
                                sendSystemNotification('Um utilizador atualizou os seus dados pessoais.', 'info', 'admin');
                            } catch (error) {
                                console.error("Erro ao guardar os dados:", error);
                                showNotification('Erro ao guardar os dados.', 'error');
                            }
                        }
                    } else {
                        try {
                            await set(ref(db, 'configuracoes/admin_profile'), formData);
                            showNotification('Alterações guardadas com sucesso!', 'success');
                        } catch (error) {
                            console.error("Erro ao guardar perfil admin:", error);
                            showNotification('Erro ao guardar as alterações.', 'error');
                        }
                    }
                };

                return (
                    <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden animate-fade-in flex flex-col h-full transition-colors">
                        <div className="flex flex-col md:flex-row h-full">
                            {/* Profile Sidebar */}
                            <div className="w-full md:w-64 bg-slate-50 dark:bg-dark-bg border-r border-slate-100 dark:border-dark-border p-6 flex flex-col gap-2">
                                <div className="text-center mb-6">
                                    <div className="w-24 h-24 bg-blue-100 dark:bg-blue-900/30 rounded-full mx-auto flex items-center justify-center text-blue-600 dark:text-blue-400 font-bold text-3xl mb-3 border-4 border-white dark:border-dark-surface shadow-sm">
                                        {userRole === 'admin' ? 'AD' : 'MO'}
                                    </div>
                                    <h3 className="font-bold text-slate-800 dark:text-white">{userRole === 'admin' ? 'Admin Condomínio' : 'Morador'}</h3>
                                    <p className="text-xs text-slate-500 dark:text-dark-mute">{userRole === 'admin' ? 'Administrador Geral' : 'Residente'}</p>
                                </div>

                                <button
                                    onClick={() => setActiveSection('personal')}
                                    className={`text-left px-4 py-3 rounded-lg text-sm font-medium transition-colors flex items-center gap-3 ${activeSection === 'personal' ? 'bg-white dark:bg-dark-surface text-blue-600 dark:text-blue-400 shadow-sm' : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-dark-card'}`}
                                >
                                    <Users size={18} /> Dados Pessoais
                                </button>
                                <button
                                    onClick={() => setActiveSection('security')}
                                    className={`text-left px-4 py-3 rounded-lg text-sm font-medium transition-colors flex items-center gap-3 ${activeSection === 'security' ? 'bg-white dark:bg-dark-surface text-blue-600 dark:text-blue-400 shadow-sm' : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-dark-card'}`}
                                >
                                    <LogOut size={18} className="rotate-90" /> Segurança
                                </button>
                                {userRole === 'admin' && (
                                    <button
                                        onClick={() => setActiveSection('permissions')}
                                        className={`text-left px-4 py-3 rounded-lg text-sm font-medium transition-colors flex items-center gap-3 ${activeSection === 'permissions' ? 'bg-white dark:bg-dark-surface text-blue-600 dark:text-blue-400 shadow-sm' : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-dark-card'}`}
                                    >
                                        <CheckCircle size={18} /> Permissões
                                    </button>
                                )}
                                <button
                                    onClick={() => setActiveSection('settings')}
                                    className={`text-left px-4 py-3 rounded-lg text-sm font-medium transition-colors flex items-center gap-3 ${activeSection === 'settings' ? 'bg-white dark:bg-dark-surface text-blue-600 dark:text-blue-400 shadow-sm' : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-dark-card'}`}
                                >
                                    <Wrench size={18} /> Preferências
                                </button>
                            </div>

                            {/* Profile Content */}
                            <div className="flex-1 p-8 overflow-y-auto">
                                {activeSection === 'personal' && (
                                    <div className="animate-fade-in max-w-2xl">
                                        <h3 className="text-lg font-bold text-slate-800 dark:text-white mb-6 pb-2 border-b border-slate-100 dark:border-dark-border">Dados Pessoais</h3>
                                        <div className="space-y-4">
                                            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                                                <InputGroup label="Nome Completo" value={formData.name} onChange={(e) => handleChange('name', e.target.value)} disabled={isMorador} />
                                                <InputGroup label={isMorador ? "Fração" : "Cargo"} value={formData.role} onChange={(e) => handleChange('role', e.target.value)} disabled={isMorador} />
                                            </div>
                                            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                                                <InputGroup label="Email" value={formData.email} onChange={(e) => handleChange('email', e.target.value)} type="email" />
                                                <InputGroup label="Telefone" value={formData.contact} onChange={(e) => handleChange('contact', e.target.value)} />
                                            </div>
                                            <InputGroup label={isMorador ? "Morada" : "Morada (Sede)"} value={formData.address} onChange={(e) => handleChange('address', e.target.value)} disabled={isMorador} />
                                            <div className="flex justify-end mt-6">
                                                <button onClick={handleSave} className="bg-blue-600 text-white px-6 py-2 rounded-lg font-medium hover:bg-blue-700 shadow-sm transition-colors">
                                                    Guardar Alterações
                                                </button>
                                            </div>
                                        </div>
                                    </div>
                                )}

                                {activeSection === 'security' && (
                                    <div className="animate-fade-in max-w-2xl">
                                        <h3 className="text-lg font-bold text-slate-800 dark:text-white mb-6 pb-2 border-b border-slate-100 dark:border-dark-border">Segurança</h3>
                                        <div className="bg-orange-50 dark:bg-orange-900/20 border border-orange-200 dark:border-orange-800 rounded-lg p-4 mb-6 flex items-start gap-3">
                                            <AlertCircle className="text-orange-600 dark:text-orange-400 flex-shrink-0 mt-0.5" size={20} />
                                            <div>
                                                <h4 className="font-bold text-orange-800 dark:text-orange-300 text-sm">Autenticação de Dois Fatores (2FA)</h4>
                                                <p className="text-xs text-orange-700 dark:text-orange-400 mt-1">Recomendamos ativar o 2FA para maior segurança da sua conta.</p>
                                                <button onClick={() => {
                                                    showNotification('Autenticação de Dois Fatores ativada com sucesso!', 'success');
                                                    sendSystemNotification('Um utilizador ativou a autenticação 2FA.', 'success', 'admin');
                                                }} className="text-orange-900 dark:text-orange-200 text-xs font-bold underline mt-2">Ativar Agora</button>
                                            </div>
                                        </div>

                                        <div className="space-y-4">
                                            <InputGroup label="Palavra-passe Atual" type="password" placeholder="••••••••" value={passwordData.current} onChange={(e) => handlePasswordChange('current', e.target.value)} />
                                            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                                                <InputGroup label="Nova Palavra-passe" type="password" placeholder="Min. 8 caracteres" value={passwordData.new} onChange={(e) => handlePasswordChange('new', e.target.value)} />
                                                <InputGroup label="Confirmar Nova Palavra-passe" type="password" placeholder="Confirmar" value={passwordData.confirm} onChange={(e) => handlePasswordChange('confirm', e.target.value)} />
                                            </div>
                                            <div className="flex justify-end mt-6">
                                                <button onClick={handleSavePassword} className="bg-slate-800 dark:bg-slate-700 text-white px-6 py-2 rounded-lg font-medium hover:bg-slate-900 dark:hover:bg-slate-600 shadow-sm transition-colors">
                                                    Atualizar Segurança
                                                </button>
                                            </div>
                                        </div>
                                    </div>
                                )}

                                {activeSection === 'permissions' && (
                                    <div className="animate-fade-in max-w-2xl">
                                        <h3 className="text-lg font-bold text-slate-800 dark:text-white mb-6 pb-2 border-b border-slate-100 dark:border-dark-border">Nível de Acesso</h3>

                                        <div className="bg-green-50 dark:bg-green-900/20 border border-green-200 dark:border-green-800 rounded-lg p-4 mb-6 flex items-center gap-3">
                                            <div className="bg-green-100 dark:bg-green-800/50 p-2 rounded-full">
                                                <CheckCircle className="text-green-600 dark:text-green-400" size={24} />
                                            </div>
                                            <div>
                                                <h4 className="font-bold text-green-800 dark:text-green-300">Acesso Total (Admin)</h4>
                                                <p className="text-xs text-green-700 dark:text-green-400">Tem permissões totais para gerir condóminos, finanças e configurações.</p>
                                            </div>
                                        </div>

                                        <div className="space-y-3">
                                            <h4 className="text-sm font-bold text-slate-700 dark:text-slate-300 mb-2">Permissões Específicas:</h4>
                                            {['Gerir Condóminos (Criar, Editar, Eliminar)', 'Gestão Financeira Completa', 'Moderação de Ocorrências', 'Configuração do Sistema', 'Gestão de Usuários'].map((perm, idx) => (
                                                <div key={idx} className="flex items-center gap-3 p-3 border border-slate-100 dark:border-dark-border rounded-lg bg-slate-50 dark:bg-dark-card">
                                                    <div className="w-2 h-2 rounded-full bg-green-500"></div>
                                                    <span className="text-sm text-slate-600 dark:text-slate-300">{perm}</span>
                                                </div>
                                            ))}
                                        </div>
                                    </div>
                                )}

                                {activeSection === 'settings' && (
                                    <div className="animate-fade-in max-w-2xl">
                                        <h3 className="text-lg font-bold text-slate-800 dark:text-white mb-6 pb-2 border-b border-slate-100 dark:border-dark-border">Preferências da Aplicação</h3>

                                        <div className="space-y-6">
                                            <div>
                                                <h4 className="text-sm font-bold text-slate-700 dark:text-slate-300 mb-3">Notificações</h4>
                                                <div className="space-y-2">
                                                    <label className="flex items-center gap-3 p-3 border border-slate-200 dark:border-dark-border rounded-lg cursor-pointer hover:bg-slate-50 dark:hover:bg-dark-card transition-colors">
                                                        <input type="checkbox" checked className="w-4 h-4 text-blue-600 rounded" readOnly />
                                                        <span className="text-sm text-slate-700 dark:text-slate-300">Alertas por Email</span>
                                                    </label>
                                                    <label className="flex items-center gap-3 p-3 border border-slate-200 dark:border-dark-border rounded-lg cursor-pointer hover:bg-slate-50 dark:hover:bg-dark-card transition-colors">
                                                        <input type="checkbox" checked className="w-4 h-4 text-blue-600 rounded" readOnly />
                                                        <span className="text-sm text-slate-700 dark:text-slate-300">Notificações Push no Navegador</span>
                                                    </label>
                                                    <label className="flex items-center gap-3 p-3 border border-slate-200 dark:border-dark-border rounded-lg cursor-pointer hover:bg-slate-50 dark:hover:bg-dark-card transition-colors">
                                                        <input type="checkbox" className="w-4 h-4 text-blue-600 rounded" readOnly />
                                                        <span className="text-sm text-slate-700 dark:text-slate-300">Relatórios Semanais Automáticos</span>
                                                    </label>
                                                </div>
                                            </div>

                                            <div>
                                                <h4 className="text-sm font-bold text-slate-700 dark:text-slate-300 mb-3">Idioma da Aplicação</h4>
                                                <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
                                                    {[
                                                        { code: 'pt', label: 'Português', flag: '🇵🇹' },
                                                        { code: 'en', label: 'English', flag: '🇬🇧' },
                                                        { code: 'es', label: 'Español', flag: '🇪🇸' },
                                                        { code: 'fr', label: 'Français', flag: '🇫🇷' }
                                                    ].map(lang => {
                                                        const match = document.cookie.match(/googtrans=\/pt\/([a-z]{2})/);
                                                        const activeLang = match ? match[1] : 'pt';
                                                        const isActive = activeLang === lang.code;
                                                        
                                                        return (
                                                            <div
                                                                key={lang.code}
                                                                onClick={() => {
                                                                    if(lang.code === 'pt') {
                                                                        document.cookie = "googtrans=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;";
                                                                        document.cookie = "googtrans=; expires=Thu, 01 Jan 1970 00:00:00 UTC; domain=" + window.location.hostname + "; path=/;";
                                                                    } else {
                                                                        document.cookie = `googtrans=/pt/${lang.code}; path=/;`;
                                                                        document.cookie = `googtrans=/pt/${lang.code}; domain=${window.location.hostname}; path=/;`;
                                                                    }
                                                                    window.location.reload();
                                                                }}
                                                                className={`border-2 p-3 rounded-lg text-center cursor-pointer transition-colors ${isActive ? 'border-blue-500 bg-blue-50 dark:bg-blue-900/30' : 'border-slate-200 dark:border-dark-border bg-white dark:bg-dark-card hover:bg-slate-50 dark:hover:bg-dark-surface'}`}
                                                            >
                                                                <div className="text-2xl mb-1">{lang.flag}</div>
                                                                <div className="text-xs font-bold text-slate-700 dark:text-slate-300">{lang.label}</div>
                                                            </div>
                                                        );
                                                    })}
                                                </div>
                                                <p className="text-xs text-slate-500 dark:text-slate-400 mt-2">A tradução é efetuada automaticamente e afetará toda a aplicação após recarregar a página.</p>
                                            </div>

                                            <div>
                                                <h4 className="text-sm font-bold text-slate-700 mb-3">Aparência</h4>
                                                <div className="grid grid-cols-3 gap-4">
                                                    <div
                                                        onClick={() => setTheme('light')}
                                                        className={`border-2 ${theme === 'light' ? 'border-blue-500 bg-blue-50' : 'border-slate-200 bg-slate-50'} p-3 rounded-lg text-center cursor-pointer transition-colors`}
                                                    >
                                                        <div className="w-full h-12 bg-white border border-slate-200 rounded mb-2 shadow-sm"></div>
                                                        <span className={`text-xs font-bold ${theme === 'light' ? 'text-blue-600' : 'text-slate-500'}`}>Claro</span>
                                                    </div>
                                                    <div
                                                        onClick={() => setTheme('dark')}
                                                        className={`border-2 ${theme === 'dark' ? 'border-blue-500 bg-blue-50' : 'border-slate-200 bg-slate-50'} p-3 rounded-lg text-center cursor-pointer transition-colors`}
                                                    >
                                                        <div className="w-full h-12 bg-slate-800 rounded mb-2 shadow-sm border border-slate-700"></div>
                                                        <span className={`text-xs font-bold ${theme === 'dark' ? 'text-blue-600' : 'text-slate-500'}`}>Escuro</span>
                                                    </div>
                                                    <div
                                                        onClick={() => setTheme('system')}
                                                        className={`border-2 ${theme === 'system' ? 'border-blue-500 bg-blue-50' : 'border-slate-200 bg-slate-50'} p-3 rounded-lg text-center cursor-pointer transition-colors`}
                                                    >
                                                        <div className="w-full h-12 bg-gradient-to-r from-white to-slate-800 rounded mb-2 shadow-sm border border-slate-200"></div>
                                                        <span className={`text-xs font-bold ${theme === 'system' ? 'text-blue-600' : 'text-slate-500'}`}>Sistema</span>
                                                    </div>
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                )}
                            </div>
                        </div>
                    </div>
                );
            };

            if (!isAuthenticated) {
                return <LoginView onLogin={handleLogin} />;
            }

            return (
                <div className="flex h-screen bg-slate-50 dark:bg-dark-bg text-slate-800 dark:text-dark-text overflow-hidden font-sans transition-colors duration-300">
                    {/* Mobile Overlay */}
                    {isSidebarOpen && (
                        <div className="fixed inset-0 z-20 bg-black/50 lg:hidden" onClick={toggleSidebar}></div>
                    )}

                    {/* Sidebar */}
                    <aside className={`fixed inset-y-0 left-0 z-30 w-64 bg-white dark:bg-dark-surface border-r border-slate-200 dark:border-dark-border shadow-xl transform transition-transform duration-300 lg:translate-x-0 lg:static lg:shadow-none ${isSidebarOpen ? 'translate-x-0' : '-translate-x-full'}`}>
                        <div className="flex flex-col h-full">
                            <div className="p-6 flex items-center justify-between">
                                <div className="flex items-center gap-3">
                                    <div className="p-2 bg-blue-600 rounded-lg text-white">
                                        <Building2 size={24} />
                                    </div>
                                    <div>
                                        <h1 className="text-xl font-bold text-slate-800 dark:text-white">MyCondominium</h1>
                                        <p className="text-xs text-slate-400 dark:text-dark-mute">Portal de Gestão</p>
                                    </div>
                                </div>
                                <button onClick={toggleSidebar} className="lg:hidden text-slate-400"><X size={24} /></button>
                            </div>

                            <div className="flex-1 px-4 py-2 space-y-1 overflow-y-auto">
                                <div className="text-xs font-semibold text-slate-400 uppercase tracking-wider mb-2 px-4 mt-2">Geral</div>
                                <SidebarItem icon={Building2} label="Dashboard" active={activeTab === 'dashboard'} onClick={() => { setActiveTab('dashboard'); setSidebarOpen(false); }} />
                                {userRole === 'admin' && <SidebarItem icon={Users} label="Condóminos" active={activeTab === 'residents'} onClick={() => { setActiveTab('residents'); setSidebarOpen(false); }} />}
                                {userRole === 'admin' && <SidebarItem icon={Wallet} label="Finanças" active={activeTab === 'finance'} onClick={() => { setActiveTab('finance'); setSidebarOpen(false); }} />}
                                {userRole === 'admin' && <SidebarItem icon={FileText} label="Faturação" active={activeTab === 'billing'} onClick={() => { setActiveTab('billing'); setSidebarOpen(false); }} />}
                                {userRole === 'admin' && <SidebarItem icon={CheckCircle} label="Pagamentos" active={activeTab === 'approvals'} onClick={() => { setActiveTab('approvals'); setSidebarOpen(false); }} />}

                                {userRole === 'morador' && <SidebarItem icon={Wallet} label="Minhas Contas" active={activeTab === 'minhas_contas'} onClick={() => { setActiveTab('minhas_contas'); setSidebarOpen(false); }} />}
                                <SidebarItem icon={Wrench} label="Manutenção" active={activeTab === 'maintenance'} onClick={() => { setActiveTab('maintenance'); setSidebarOpen(false); }} />
                                <SidebarItem icon={MessageCircle} label="Mensagens" active={activeTab === 'messages'} onClick={() => { setActiveTab('messages'); setSidebarOpen(false); }} />
                                <SidebarItem icon={Map} label="Mapa" active={activeTab === 'map'} onClick={() => { setActiveTab('map'); setSidebarOpen(false); }} />

                                <div className="text-xs font-semibold text-slate-400 uppercase tracking-wider mb-2 px-4 mt-6">Espaços Comuns</div>
                                <SidebarItem icon={Dumbbell} label="Ginásio" active={activeTab === 'gym'} onClick={() => { setActiveTab('gym'); setSidebarOpen(false); }} />
                                <SidebarItem icon={PartyPopper} label="Salão de Festas" active={activeTab === 'hall'} onClick={() => { setActiveTab('hall'); setSidebarOpen(false); }} />
                                <SidebarItem icon={Trophy} label="Parque Jogos" active={activeTab === 'park'} onClick={() => { setActiveTab('park'); setSidebarOpen(false); }} />
                            </div>

                            <div className="p-4 border-t border-slate-100 dark:border-dark-border">
                                <button onClick={handleLogout} className="flex items-center gap-3 px-4 py-3 text-sm font-medium text-red-600 hover:bg-red-50 w-full rounded-lg transition-colors">
                                    <LogOut size={20} />
                                    <span>Terminar Sessão</span>
                                </button>
                            </div>
                        </div>
                    </aside>

                    {/* Main Content */}
                    <main className="flex-1 flex flex-col h-full overflow-hidden relative">
                        {/* Header */}
                        <header className="h-16 bg-white dark:bg-dark-surface border-b border-slate-200 dark:border-dark-border flex items-center justify-between px-6 z-10 shadow-sm transition-colors duration-300">
                            <div className="flex items-center gap-4">
                                <button onClick={toggleSidebar} className="lg:hidden text-slate-600 dark:text-slate-300 hover:text-blue-600 p-2 -ml-2 rounded-lg hover:bg-slate-100 dark:hover:bg-dark-card">
                                    <Menu size={24} />
                                </button>
                                <h2 className="text-xl font-bold text-slate-800 dark:text-white capitalize">{
                                    activeTab === 'dashboard' ? 'Visão Geral' :
                                        activeTab === 'residents' ? 'Condóminos' :
                                            activeTab === 'finance' ? 'Gestão Financeira' :
                                                activeTab === 'billing' ? 'Faturação e Cobranças' :
                                                    activeTab === 'maintenance' ? 'Ocorrências e Manutenção' :
                                                        activeTab === 'messages' ? 'Mensagens e Fórum' :
                                                            activeTab === 'map' ? 'Mapa do Condomínio' :
                                                                activeTab === 'all_bookings' ? 'Todas as Reservas' :
                                                                activeTab === 'gym' ? 'Ginásio' :
                                                                    activeTab === 'hall' ? 'Salão de Festas' :
                                                                        activeTab === 'park' ? 'Parque de Jogos' :
                                                                            activeTab === 'profile' ? 'O Meu Perfil' : activeTab
                                }</h2>
                            </div>

                            <div className="flex items-center gap-4">
                                <div className="relative hidden md:block">
                                    <Search size={18} className="absolute left-3 top-1/2 -translate-y-1/2 text-slate-400" />
                                    <input
                                        type="text"
                                        placeholder="Pesquisar..."
                                        className="pl-10 pr-4 py-2 border border-slate-200 dark:border-dark-border rounded-full text-sm focus:outline-none focus:ring-2 focus:ring-blue-100 focus:border-blue-400 w-64 bg-white dark:bg-dark-card dark:text-white dark:placeholder-slate-500"
                                    />
                                </div>

                                {/* Notifications */}
                                <div className="relative" ref={notificationRef}>
                                    <button
                                        className="p-2 text-slate-600 dark:text-slate-300 hover:bg-slate-100 dark:hover:bg-dark-card rounded-full relative transition-colors"
                                        onClick={() => setNotificationsOpen(!isNotificationsOpen)}
                                    >
                                        <Bell size={20} />
                                        {unreadNotifications > 0 && (
                                            <span className="absolute top-1 right-1 w-2.5 h-2.5 bg-red-500 rounded-full ring-2 ring-white dark:ring-dark-surface"></span>
                                        )}
                                    </button>

                                    {isNotificationsOpen && (
                                        <div className="absolute right-0 mt-2 w-80 bg-white dark:bg-dark-surface rounded-xl shadow-xl border border-slate-100 dark:border-dark-border overflow-hidden animate-slide-up origin-top-right z-50">
                                            <div className="p-4 border-b border-slate-100 dark:border-dark-border flex justify-between items-center">
                                                <h3 className="font-bold text-slate-800 dark:text-white">Notificações</h3>
                                                <button onClick={handleClearNotifications} className="text-xs text-blue-600 dark:text-blue-400 hover:underline">Limpar</button>
                                            </div>
                                            <div className="max-h-80 overflow-y-auto">
                                                {notificationsList.length === 0 ? (
                                                    <div className="p-8 text-center text-slate-400 dark:text-dark-mute text-sm">Sem novas notificações</div>
                                                ) : (
                                                    notificationsList.map(notif => (
                                                        <div key={notif.id} className={`p-4 border-b border-slate-50 dark:border-dark-border hover:bg-slate-50 dark:hover:bg-dark-card ${!notif.read ? 'bg-blue-50/30 dark:bg-blue-900/10' : ''}`}>
                                                            <div className="flex gap-3">
                                                                <div className={`mt-1 w-2 h-2 rounded-full flex-shrink-0 ${notif.type === 'info' ? 'bg-blue-500' : notif.type === 'success' ? 'bg-green-500' : 'bg-red-500'}`}></div>
                                                                <div>
                                                                    <p className="text-sm text-slate-700 dark:text-slate-200 leading-tight">{notif.message}</p>
                                                                    <div className="flex justify-between items-center mt-1">
                                                                        <p className="text-xs text-slate-400 dark:text-slate-500">{notif.time}</p>
                                                                        {!notif.read && (
                                                                            <button onClick={() => handleMarkAsRead(notif.id)} className="text-[10px] text-blue-600 dark:text-blue-400 hover:underline">
                                                                                Marcar como lida
                                                                            </button>
                                                                        )}
                                                                    </div>
                                                                </div>
                                                            </div>
                                                        </div>
                                                    ))
                                                )}
                                            </div>
                                        </div>
                                    )}
                                </div>

                                <div
                                    className="w-8 h-8 rounded-full bg-blue-100 dark:bg-blue-900/30 border border-blue-200 dark:border-blue-700/50 flex items-center justify-center text-blue-700 dark:text-blue-300 font-bold text-sm cursor-pointer hover:bg-blue-200 dark:hover:bg-blue-900/50 transition-colors"
                                    onClick={() => setActiveTab('profile')}
                                    title="Meu Perfil"
                                >
                                    {userRole === 'admin' ? 'AD' : 'MO'}
                                </div>
                            </div>
                        </header>

                        {/* Content Body */}
                        <div className="flex-1 overflow-y-auto p-4 md:p-6 lg:p-8 bg-slate-50 dark:bg-dark-bg scroll-smooth transition-colors duration-300">
                            <div className="max-w-7xl mx-auto h-full">

                                {/* --- DASHBOARD --- */}
                                {activeTab === 'dashboard' && <DashboardView />}

                                {/* --- MAPA --- */}
                                {activeTab === 'map' && <MapView />}

                                {/* --- GINÁSIO --- */}
                                {activeTab === 'gym' && (
                                    <BookingView
                                        facilityType="gym"
                                        title="Ginásio Privado"
                                        icon={Dumbbell}
                                        description="Equipamento cardio e musculação disponível para todos os residentes."
                                        priceInfo="Gratuito"
                                        color="bg-gradient-to-r from-blue-500 to-blue-600"
                                    />
                                )}

                                {/* --- SALÃO --- */}
                                {activeTab === 'hall' && (
                                    <BookingView
                                        facilityType="hall"
                                        title="Salão de Festas"
                                        icon={PartyPopper}
                                        description="Espaço amplo para eventos, aniversários e reuniões de condomínio."
                                        priceInfo="50€ / Evento"
                                        color="bg-gradient-to-r from-purple-500 to-purple-600"
                                    />
                                )}

                                {/* --- PARQUE --- */}
                                {activeTab === 'park' && (
                                    <BookingView
                                        facilityType="park"
                                        title="Parque de Jogos"
                                        icon={Trophy}
                                        description="Campo polidesportivo exterior (Futebol, Basquetebol e Ténis)."
                                        priceInfo="10€ / Hora"
                                        color="bg-gradient-to-r from-green-500 to-green-600"
                                    />
                                )}

                                {/* --- ALL BOOKINGS --- */}
                                {activeTab === 'all_bookings' && (
                                    <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden animate-fade-in flex flex-col h-full transition-colors">
                                        <div className="p-6 border-b border-slate-100 dark:border-dark-border flex justify-between items-center">
                                            <div>
                                                <h3 className="font-bold text-lg text-slate-800 dark:text-white">Histórico de Reservas</h3>
                                                <p className="text-sm text-slate-500 dark:text-dark-mute">Lista completa de agendamentos em todos os espaços de lazer</p>
                                            </div>
                                            <button onClick={() => setActiveTab('map')} className="bg-blue-600 text-white px-4 py-2 rounded-lg text-sm font-medium hover:bg-blue-700 flex items-center justify-center gap-2 shadow-sm transition-colors">
                                                <Map size={18} /> Nova Reserva
                                            </button>
                                        </div>
                                        <div className="overflow-auto flex-1 p-4 space-y-3">
                                            {bookings.map(booking => (
                                                <div key={booking.id} className="flex items-center justify-between p-4 border border-slate-100 dark:border-dark-border rounded-lg hover:bg-slate-50 dark:hover:bg-dark-card transition-colors shadow-sm">
                                                    <div className="flex items-center gap-4">
                                                        <div className={`p-3 rounded-lg ${booking.facility === 'gym' ? 'bg-blue-100 text-blue-600 dark:bg-blue-900/30 dark:text-blue-400' : booking.facility === 'hall' ? 'bg-purple-100 text-purple-600 dark:bg-purple-900/30 dark:text-purple-400' : 'bg-green-100 text-green-600 dark:bg-green-900/30 dark:text-green-400'}`}>
                                                            {booking.facility === 'gym' ? <Dumbbell size={24} /> : booking.facility === 'hall' ? <PartyPopper size={24} /> : <Trophy size={24} />}
                                                        </div>
                                                        <div>
                                                            <p className="font-bold text-base text-slate-800 dark:text-slate-200">{booking.facilityName}</p>
                                                            <p className="text-sm text-slate-600 dark:text-slate-400">{booking.date} • {booking.time}</p>
                                                        </div>
                                                    </div>
                                                    <div className="text-right">
                                                        <p className="text-base font-medium text-slate-700 dark:text-slate-300">{booking.resident}</p>
                                                        <div className="mt-1">
                                                            <Badge status={booking.status} />
                                                        </div>
                                                    </div>
                                                </div>
                                            ))}
                                            {bookings.length === 0 && (
                                                <div className="text-center py-12">
                                                    <Calendar size={48} className="mx-auto text-slate-300 dark:text-slate-600 mb-4" />
                                                    <h3 className="text-lg font-bold text-slate-700 dark:text-slate-300">Sem reservas</h3>
                                                    <p className="text-slate-500 dark:text-slate-400 mt-2">Ainda não existem agendamentos no condomínio.</p>
                                                </div>
                                            )}
                                        </div>
                                    </div>
                                )}
                                {/* --- APPROVALS --- */}
                                {activeTab === 'approvals' && userRole === 'admin' && (
                                    <div className="p-6">
                                        <div className="mb-6">
                                            <h2 className="text-2xl font-bold text-slate-800 dark:text-white">Pagamentos Concluídos</h2>
                                            <p className="text-slate-500 dark:text-dark-mute">Consulte o histórico de todos os pagamentos concluídos pelos condóminos.</p>
                                        </div>
                                        <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden">
                                            <div className="overflow-x-auto">
                                                <table className="w-full text-left border-collapse">
                                                    <thead>
                                                        <tr className="bg-slate-50 dark:bg-dark-bg border-b border-slate-100 dark:border-dark-border text-sm font-semibold text-slate-500 dark:text-slate-400">
                                                            <th className="p-4">Morador</th>
                                                            <th className="p-4">Fatura</th>
                                                            <th className="p-4">Estado</th>
                                                            <th className="p-4 text-right">Valor</th>
                                                        </tr>
                                                    </thead>
                                                    <tbody>
                                                        {faturas.filter(f => f.status === 'Pago').map(fatura => (
                                                            <tr key={fatura.id} className="border-b border-slate-50 dark:border-dark-border hover:bg-slate-50/50 dark:hover:bg-dark-bg/50">
                                                                <td className="p-4">
                                                                    <p className="font-semibold text-slate-700 dark:text-slate-200">{fatura.nomeMorador}</p>
                                                                    <p className="text-xs text-slate-400">Fração: {fatura.fracao}</p>
                                                                </td>
                                                                <td className="p-4 text-slate-600 dark:text-slate-400">
                                                                    <p className="text-sm">{fatura.categoria}</p>
                                                                    <p className="text-xs">Venceu a: {fatura.dataVencimento}</p>
                                                                </td>
                                                                <td className="p-4 text-slate-600 dark:text-slate-400">
                                                                    <div className="inline-flex items-center gap-1.5 px-2 py-1 rounded bg-green-100 text-green-700 dark:bg-green-900/30 dark:text-green-400 text-xs font-medium">
                                                                        <CheckCircle size={14} /> Pago
                                                                    </div>
                                                                </td>
                                                                <td className="p-4 font-bold text-green-600 dark:text-green-400 text-right">{Number(fatura.valor).toFixed(2)}€</td>
                                                            </tr>
                                                        ))}
                                                        {faturas.filter(f => f.status === 'Pago').length === 0 && (
                                                            <tr><td colSpan="4" className="p-8 text-center text-slate-500">Nenhum pagamento concluído encontrado.</td></tr>
                                                        )}
                                                    </tbody>
                                                </table>
                                            </div>
                                        </div>
                                    </div>
                                )}

                                {/* --- RESIDENTS --- */}
                                {activeTab === 'residents' && (
                                    <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden animate-fade-in flex flex-col h-full transition-colors">
                                        <div className="p-6 border-b border-slate-100 dark:border-dark-border flex flex-col md:flex-row md:items-center justify-between gap-4">
                                            <div>
                                                <h3 className="font-bold text-lg text-slate-800 dark:text-white">Gestão de Condóminos</h3>
                                                <p className="text-sm text-slate-500 dark:text-dark-mute">Total: {residents.length} frações registadas</p>
                                            </div>
                                            <div className="flex flex-col sm:flex-row gap-3">
                                                <div className="relative">
                                                    <Search className="absolute left-3 top-1/2 -translate-y-1/2 text-slate-400" size={18} />
                                                    <input
                                                        type="text"
                                                        placeholder="Procurar fração ou nome..."
                                                        value={searchQuery}
                                                        onChange={(e) => setSearchQuery(e.target.value)}
                                                        className="pl-10 pr-4 py-2 border border-slate-200 dark:border-dark-border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 w-full sm:w-64 bg-white dark:bg-dark-card dark:text-white dark:placeholder-slate-500 transition-colors"
                                                    />
                                                </div>
                                                <button
                                                    onClick={() => handleOpenModal('resident')}
                                                    className="bg-blue-600 text-white px-4 py-2 rounded-lg text-sm font-medium hover:bg-blue-700 flex items-center justify-center gap-2 transition-colors shadow-sm"
                                                >
                                                    <Plus size={18} /> <span className="hidden sm:inline">Adicionar</span>
                                                </button>
                                            </div>
                                        </div>
                                        <div className="overflow-x-auto flex-1">
                                            <table className="w-full text-sm text-left">
                                                <thead className="bg-slate-50 dark:bg-dark-bg text-slate-500 dark:text-slate-400 font-medium border-b border-slate-100 dark:border-dark-border sticky top-0">
                                                    <tr>
                                                        <th className="px-6 py-4">Fração</th>
                                                        <th className="px-6 py-4">Proprietário</th>
                                                        <th className="px-6 py-4">Contacto</th>
                                                        <th className="px-6 py-4">Estado Quotas</th>
                                                        <th className="px-6 py-4 text-center">Acesso</th>
                                                        <th className="px-6 py-4 text-right">Em Dívida</th>
                                                        <th className="px-6 py-4 text-center">Ações</th>
                                                    </tr>
                                                </thead>
                                                <tbody className="divide-y divide-slate-100 dark:divide-dark-border">
                                                    {filteredResidents.map((resident) => (
                                                        <tr key={resident.id} className="hover:bg-slate-50 dark:hover:bg-dark-bg transition-colors group">
                                                            <td className="px-6 py-4 font-bold text-slate-700 dark:text-slate-200">{resident.unit}</td>
                                                            <td className="px-6 py-4">
                                                                <div className="flex flex-col">
                                                                    <span className="text-slate-900 dark:text-white font-medium">{resident.name}</span>
                                                                    <span className="text-xs text-slate-500 dark:text-dark-mute">{resident.email}</span>
                                                                </div>
                                                            </td>
                                                            <td className="px-6 py-4 text-slate-600 dark:text-dark-mute">{resident.contact}</td>
                                                            <td className="px-6 py-4"><Badge status={resident.status} /></td>
                                                            <td className="px-6 py-4 text-center">
                                                                <button
                                                                    onClick={() => handleToggleRole(resident.id)}
                                                                    className={`px-3 py-1 rounded-full text-xs font-bold transition-colors ${resident.role === 'admin' ? 'bg-purple-100 text-purple-700 hover:bg-purple-200 dark:bg-purple-900/30 dark:text-purple-400 dark:hover:bg-purple-900/50' : 'bg-slate-100 text-slate-700 hover:bg-slate-200 dark:bg-slate-800 dark:text-slate-300 dark:hover:bg-slate-700'}`}
                                                                    title="Mudar Permissões"
                                                                >
                                                                    {resident.role === 'admin' ? 'Admin' : 'Morador'}
                                                                </button>
                                                            </td>
                                                            <td className={`px-6 py-4 text-right font-medium ${resident.pending > 0 ? 'text-red-600 dark:text-red-400' : 'text-slate-600 dark:text-slate-400'}`}>
                                                                {Number(resident.pending).toFixed(2)}€
                                                            </td>
                                                            <td className="px-6 py-4 text-center">
                                                                <div className="flex items-center justify-center gap-2 opacity-100 sm:opacity-0 group-hover:opacity-100 transition-opacity">
                                                                    <button
                                                                        onClick={() => handleOpenModal('resident', resident)}
                                                                        className="p-1.5 text-blue-600 dark:text-blue-400 hover:bg-blue-50 dark:hover:bg-blue-900/30 rounded-lg transition-colors" title="Editar"
                                                                    >
                                                                        <Edit2 size={16} />
                                                                    </button>
                                                                    <button
                                                                        onClick={() => handleDeleteResident(resident.id)}
                                                                        className="p-1.5 text-red-600 dark:text-red-400 hover:bg-red-50 dark:hover:bg-red-900/30 rounded-lg transition-colors" title="Eliminar"
                                                                    >
                                                                        <Trash2 size={16} />
                                                                    </button>
                                                                </div>
                                                            </td>
                                                        </tr>
                                                    ))}
                                                </tbody>
                                            </table>

                                        </div>
                                    </div>
                                )}

                                {/* --- BILLING / COBRANÇAS --- */}
                                {activeTab === 'billing' && userRole === 'admin' && (
                                    <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden animate-fade-in flex flex-col h-full transition-colors">
                                        <div className="p-6 border-b border-slate-100 dark:border-dark-border flex flex-col md:flex-row justify-between items-center gap-4">
                                            <div>
                                                <h3 className="font-bold text-lg text-slate-800 dark:text-white">Avisos de Cobrança</h3>
                                                <p className="text-sm text-slate-500 dark:text-dark-mute">Emita faturas ou avise condóminos individualmente</p>
                                            </div>
                                            <button onClick={() => handleOpenModal('emitir_fatura')} className="bg-blue-600 text-white px-4 py-2 rounded-lg text-sm font-medium hover:bg-blue-700 flex items-center justify-center gap-2 shadow-sm">
                                                <FileText size={18} /> Emitir Fatura
                                            </button>
                                        </div>
                                        <div className="overflow-x-auto flex-1">
                                            <table className="w-full text-sm text-left">
                                                <thead className="bg-slate-50 dark:bg-dark-bg text-slate-500 dark:text-slate-400 font-medium border-b border-slate-100 dark:border-dark-border">
                                                    <tr>
                                                        <th className="px-6 py-4">Fração</th>
                                                        <th className="px-6 py-4">Condómino</th>
                                                        <th className="px-6 py-4">Quotas em Atraso</th>
                                                        <th className="px-6 py-4 text-center">Ações</th>
                                                    </tr>
                                                </thead>
                                                <tbody className="divide-y divide-slate-100 dark:divide-dark-border">
                                                    {residents.map((resident) => (
                                                        <tr key={resident.id} className="hover:bg-slate-50 dark:hover:bg-dark-bg transition-colors">
                                                            <td className="px-6 py-4 font-bold text-slate-700 dark:text-slate-200">{resident.unit}</td>
                                                            <td className="px-6 py-4 text-slate-800 dark:text-white">{resident.name}</td>
                                                            <td className={`px-6 py-4 font-medium ${resident.pending > 0 ? 'text-red-600 dark:text-red-400' : 'text-green-600 dark:text-green-500'}`}>
                                                                {resident.pending > 0 ? `${Number(resident.pending).toFixed(2)}€` : 'Regularizado'}
                                                            </td>
                                                            <td className="px-6 py-4 text-center">
                                                                <button
                                                                    onClick={() => {
                                                                        showNotification(`Aviso de cobrança enviado para ${resident.email}`, 'success');
                                                                        sendSystemNotification(`Aviso de cobrança enviado a ${resident.name} para a fração ${resident.unit}.`, 'info', resident.id);
                                                                    }}
                                                                    className={`px-3 py-1.5 rounded-lg text-xs font-bold transition-colors shadow-sm cursor-pointer ${resident.pending > 0 ? 'bg-orange-600 text-white hover:bg-orange-700' : 'bg-slate-200 text-slate-400 cursor-not-allowed dark:bg-slate-800 dark:text-slate-600'}`}
                                                                    disabled={resident.pending <= 0}
                                                                >
                                                                    Notificar
                                                                </button>
                                                                <button
                                                                    onClick={() => handleGenerateInvoice(resident)}
                                                                    className="ml-2 px-3 py-1.5 rounded-lg text-xs font-bold transition-colors shadow-sm bg-slate-800 text-white hover:bg-slate-900 dark:bg-slate-700 dark:hover:bg-slate-600"
                                                                >
                                                                    Faturar na Hora
                                                                </button>
                                                                <button
                                                                    onClick={() => {
                                                                        showNotification(`Fatura enviada com sucesso para ${resident.email}`, 'success');
                                                                        sendSystemNotification(`Fatura enviada a ${resident.name} (${resident.unit}) por email.`, 'info', resident.id);
                                                                    }}
                                                                    className="ml-2 px-3 py-1.5 rounded-lg text-xs font-bold transition-colors shadow-sm bg-blue-600 text-white hover:bg-blue-700 dark:bg-blue-600 dark:hover:bg-blue-700"
                                                                >
                                                                    Enviar por Email
                                                                </button>
                                                            </td>
                                                        </tr>
                                                    ))}
                                                </tbody>
                                            </table>
                                        </div>
                                    </div>
                                )}
                                {/* --- MINHAS CONTAS (Morador) --- */}
                                {activeTab === 'minhas_contas' && userRole === 'morador' && (
                                    <div className="space-y-6 animate-fade-in h-full flex flex-col">
                                        <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
                                            <div className="bg-white dark:bg-dark-surface p-6 rounded-xl shadow-sm border border-slate-100 dark:border-dark-border border-l-4 border-l-orange-500 relative overflow-hidden transition-colors">
                                                <div className="relative z-10">
                                                    <h4 className="text-slate-500 dark:text-dark-mute text-xs font-bold uppercase tracking-wider">Total Pendente</h4>
                                                    <p className="text-2xl font-bold text-slate-800 dark:text-white mt-1">
                                                        {faturas.filter(f => f.moradorId === currentUserId && f.status === 'Pendente').reduce((acc, f) => acc + Number(f.valor), 0).toFixed(2)}€
                                                    </p>
                                                </div>
                                                <AlertCircle className="absolute right-4 bottom-4 text-orange-100 dark:text-orange-900/20" size={64} />
                                            </div>
                                            <div className="bg-white dark:bg-dark-surface p-6 rounded-xl shadow-sm border border-slate-100 dark:border-dark-border border-l-4 border-l-green-500 relative overflow-hidden transition-colors">
                                                <div className="relative z-10">
                                                    <h4 className="text-slate-500 dark:text-dark-mute text-xs font-bold uppercase tracking-wider">Total Pago</h4>
                                                    <p className="text-2xl font-bold text-slate-800 dark:text-white mt-1">
                                                        {faturas.filter(f => f.moradorId === currentUserId && f.status === 'Pago').reduce((acc, f) => acc + Number(f.valor), 0).toFixed(2)}€
                                                    </p>
                                                </div>
                                                <CheckCircle className="absolute right-4 bottom-4 text-green-100 dark:text-green-900/20" size={64} />
                                            </div>
                                        </div>

                                        <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden flex-1 flex flex-col transition-colors">
                                            <div className="p-6 border-b border-slate-100 dark:border-dark-border flex flex-col md:flex-row justify-between items-center gap-4">
                                                <div>
                                                    <h3 className="font-bold text-lg text-slate-800 dark:text-white">Minhas Faturas</h3>
                                                    <p className="text-sm text-slate-500 dark:text-dark-mute">Consulte as suas despesas e faturas emitidas</p>
                                                </div>
                                            </div>
                                            <div className="overflow-x-auto flex-1">
                                                <table className="w-full text-sm text-left">
                                                    <thead className="bg-slate-50 dark:bg-dark-bg text-slate-500 dark:text-slate-400 font-medium border-b border-slate-100 dark:border-dark-border">
                                                        <tr>
                                                            <th className="px-6 py-4">Data Emissão</th>
                                                            <th className="px-6 py-4">Categoria</th>
                                                            <th className="px-6 py-4">Vencimento</th>
                                                            <th className="px-6 py-4 text-right">Valor</th>
                                                            <th className="px-6 py-4 text-center">Estado</th>
                                                            <th className="px-6 py-4 text-center">Ações</th>
                                                        </tr>
                                                    </thead>
                                                    <tbody className="divide-y divide-slate-100 dark:divide-dark-border">
                                                        {faturas.filter(f => f.moradorId === currentUserId).length === 0 ? (
                                                            <tr>
                                                                <td colSpan="6" className="px-6 py-8 text-center text-slate-500 dark:text-slate-400">
                                                                    Nenhuma fatura encontrada.
                                                                </td>
                                                            </tr>
                                                        ) : (
                                                            faturas.filter(f => f.moradorId === currentUserId).map((fatura) => (
                                                                <tr key={fatura.id} className="hover:bg-slate-50 dark:hover:bg-dark-bg transition-colors">
                                                                    <td className="px-6 py-4 text-slate-600 dark:text-slate-400">{fatura.dataEmissao}</td>
                                                                    <td className="px-6 py-4 font-medium text-slate-800 dark:text-white">{fatura.categoria}</td>
                                                                    <td className="px-6 py-4 text-slate-600 dark:text-slate-400">{fatura.dataVencimento}</td>
                                                                    <td className="px-6 py-4 text-right font-medium text-slate-800 dark:text-white">{Number(fatura.valor).toFixed(2)}€</td>
                                                                    <td className="px-6 py-4 text-center"><Badge status={fatura.status} /></td>
                                                                    <td className="px-6 py-4 text-center">
                                                                        {fatura.status === 'Pendente' ? (
                                                                            <button
                                                                                onClick={() => handlePayFatura(fatura)}
                                                                                className="bg-blue-600 text-white px-4 py-1.5 rounded-lg text-xs font-bold hover:bg-blue-700 transition-colors shadow-sm"
                                                                            >
                                                                                Pagar
                                                                            </button>
                                                                        ) : (
                                                                            <span className="text-slate-400 text-xs font-bold flex items-center justify-center gap-1">
                                                                                <CheckCircle size={14} /> Pago
                                                                            </span>
                                                                        )}
                                                                    </td>
                                                                </tr>
                                                            ))
                                                        )}
                                                    </tbody>
                                                </table>
                                            </div>
                                        </div>
                                    </div>
                                )}

                                {/* --- FINANCES --- */}
                                {/* --- FINANCES --- */}
                                {activeTab === 'finance' && (
                                    <div className="space-y-6 animate-fade-in h-full flex flex-col">
                                        <div className="grid grid-cols-1 md:grid-cols-3 gap-6">
                                            <div className="bg-white dark:bg-dark-surface p-6 rounded-xl shadow-sm border border-slate-100 dark:border-dark-border border-l-4 border-l-green-500 relative overflow-hidden transition-colors">
                                                <div className="relative z-10">
                                                    <h4 className="text-slate-500 dark:text-dark-mute text-xs font-bold uppercase tracking-wider">Receitas (Global)</h4>
                                                    <p className="text-2xl font-bold text-slate-800 dark:text-white mt-1">{totalIncome.toFixed(2)}€</p>
                                                </div>
                                                <TrendingUp className="absolute right-4 bottom-4 text-green-100 dark:text-green-900/20" size={64} />
                                            </div>
                                            <div className="bg-white dark:bg-dark-surface p-6 rounded-xl shadow-sm border border-slate-100 dark:border-dark-border border-l-4 border-l-red-500 relative overflow-hidden transition-colors">
                                                <div className="relative z-10">
                                                    <h4 className="text-slate-500 dark:text-dark-mute text-xs font-bold uppercase tracking-wider">Despesas (Global)</h4>
                                                    <p className="text-2xl font-bold text-slate-800 dark:text-white mt-1">{totalExpense.toFixed(2)}€</p>
                                                </div>
                                                <TrendingDown className="absolute right-4 bottom-4 text-red-100 dark:text-red-900/20" size={64} />
                                            </div>
                                            <div className="bg-white dark:bg-dark-surface p-6 rounded-xl shadow-sm border border-slate-100 dark:border-dark-border border-l-4 border-l-blue-500 relative overflow-hidden transition-colors">
                                                <div className="relative z-10">
                                                    <h4 className="text-slate-500 dark:text-dark-mute text-xs font-bold uppercase tracking-wider">Balanço Líquido</h4>
                                                    <p className={`text-2xl font-bold mt-1 ${balance >= 0 ? 'text-blue-600 dark:text-blue-400' : 'text-red-600 dark:text-red-400'}`}>
                                                        {balance > 0 ? '+' : ''}{balance.toFixed(2)}€
                                                    </p>
                                                </div>
                                                <Wallet className="absolute right-4 bottom-4 text-blue-100 dark:text-blue-900/20" size={64} />
                                            </div>
                                        </div>

                                        <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden flex-1 flex flex-col transition-colors">
                                            <div className="p-6 border-b border-slate-100 dark:border-dark-border flex justify-between items-center">
                                                <div className="flex items-center gap-2">
                                                    <h3 className="font-bold text-lg text-slate-800 dark:text-white">Diário Financeiro</h3>
                                                    <span className="text-xs bg-slate-100 dark:bg-dark-bg text-slate-600 dark:text-slate-400 px-2 py-1 rounded-full">{finances.length} movimentos</span>
                                                </div>
                                                <div className="flex items-center gap-3">
                                                    {finances.length === 0 && (
                                                        <button
                                                            onClick={async () => {
                                                                try {
                                                                    for (const item of INITIAL_FINANCES) {
                                                                        await set(push(ref(db, 'financas')), item);
                                                                    }
                                                                    showNotification("Dados de exemplo restaurados com sucesso!", "success");
                                                                } catch (error) {
                                                                    console.error("Erro ao restaurar:", error);
                                                                    showNotification("Erro ao restaurar.", "error");
                                                                }
                                                            }}
                                                            className="bg-orange-500 text-white px-4 py-2 rounded-lg text-sm font-medium hover:bg-orange-600 transition-colors shadow-sm flex items-center gap-2"
                                                        >
                                                            <Wrench size={16} /> Restaurar Base de Dados
                                                        </button>
                                                    )}
                                                    <button
                                                        onClick={() => handleOpenModal('finance')}
                                                        className="bg-slate-900 dark:bg-slate-700 text-white px-4 py-2 rounded-lg text-sm font-medium hover:bg-slate-800 dark:hover:bg-slate-600 flex items-center gap-2 shadow-lg hover:shadow-xl transition-all"
                                                    >
                                                        <Plus size={18} /> Novo Registo
                                                    </button>
                                                </div>
                                            </div>
                                            <div className="overflow-auto flex-1">
                                                <table className="w-full text-sm text-left">
                                                    <thead className="bg-slate-50 dark:bg-dark-bg text-slate-500 dark:text-slate-400 font-medium border-b border-slate-100 dark:border-dark-border sticky top-0 z-10">
                                                        <tr>
                                                            <th className="px-6 py-4">Data</th>
                                                            <th className="px-6 py-4">Categoria</th>
                                                            <th className="px-6 py-4">Descrição</th>
                                                            <th className="px-6 py-4">Tipo</th>
                                                            <th className="px-6 py-4 text-right">Valor</th>
                                                            <th className="px-6 py-4 text-center">Recibo</th>
                                                        </tr>
                                                    </thead>
                                                    <tbody className="divide-y divide-slate-100 dark:divide-dark-border">
                                                        {finances.map((item) => (
                                                            <tr key={item.id} className="hover:bg-slate-50 dark:hover:bg-dark-bg transition-colors">
                                                                <td className="px-6 py-4 text-slate-600 dark:text-slate-400 font-mono">{item.date}</td>
                                                                <td className="px-6 py-4 font-bold text-slate-700 dark:text-slate-200">{item.category}</td>
                                                                <td className="px-6 py-4 text-slate-500 dark:text-dark-mute">{item.desc}</td>
                                                                <td className="px-6 py-4">
                                                                    <Badge status={item.type === 'income' ? 'Receita' : 'Despesa'} />
                                                                </td>
                                                                <td className={`px-6 py-4 text-right font-bold font-mono ${item.type === 'income' ? 'text-green-600 dark:text-green-400' : 'text-red-600 dark:text-red-400'}`}>
                                                                    {item.type === 'income' ? '+' : '-'}{Number(item.amount).toFixed(2)}€
                                                                </td>
                                                                <td className="px-6 py-4 text-center">
                                                                    <button onClick={() => {
                                                                        showNotification(`Recibo de ${item.category} descarregado.`, 'success');
                                                                        sendSystemNotification(`Recibo de ${item.category} descarregado.`, 'info', currentUserId);
                                                                    }} className="text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 transition-colors" title="Descarregar Recibo">
                                                                        <FileText size={16} />
                                                                    </button>
                                                                </td>
                                                            </tr>
                                                        ))}
                                                    </tbody>
                                                </table>
                                            </div>
                                        </div>
                                    </div>
                                )}

                                {/* --- MESSAGES --- */}
                                {activeTab === 'messages' && (
                                    <div className="bg-white dark:bg-dark-surface rounded-xl shadow-sm border border-slate-100 dark:border-dark-border overflow-hidden animate-fade-in flex flex-col h-full transition-colors md:flex-row min-h-[500px]">
                                        {/* Contact List */}
                                        <div className="w-full md:w-1/3 border-r border-slate-100 dark:border-dark-border flex flex-col h-full">
                                            <div className="p-4 border-b border-slate-100 dark:border-dark-border flex justify-between items-center bg-slate-50 dark:bg-dark-bg">
                                                <h3 className="font-bold text-slate-800 dark:text-white">Conversas</h3>
                                                <button onClick={() => { setIsCreateGroupModalOpen(true); setNewGroupName(''); setNewGroupMembers([]); }} className="p-2 bg-blue-100 text-blue-600 rounded-lg hover:bg-blue-200 dark:bg-blue-900/40 dark:text-blue-400 transition-colors" title="Criar Grupo">
                                                    <Plus size={18} />
                                                </button>
                                            </div>
                                            <div className="p-3 border-b border-slate-100 dark:border-dark-border">
                                                <div className="relative">
                                                    <Search className="absolute left-3 top-1/2 -translate-y-1/2 text-slate-400" size={16} />
                                                    <input type="text" placeholder="Procurar mensagens..." className="w-full pl-9 pr-3 py-2 bg-slate-100 dark:bg-dark-card border-none rounded-lg text-sm focus:ring-2 focus:ring-blue-500 dark:text-white" />
                                                </div>
                                            </div>
                                            <div className="flex-1 overflow-y-auto">
                                                <div 
                                                    onClick={() => setActiveChat({ type: 'global', id: 'global', name: 'Fórum do Condomínio' })}
                                                    className={`p-3 border-b-2 cursor-pointer transition-colors ${activeChat.type === 'global' ? 'border-blue-100 dark:border-blue-900/30 bg-blue-50/50 dark:bg-blue-900/10 hover:bg-blue-50/80 dark:hover:bg-blue-900/20' : 'border-transparent hover:bg-slate-50 dark:hover:bg-dark-card'}`}
                                                >
                                                    <div className="flex items-center gap-3">
                                                        <div className="w-10 h-10 rounded-full bg-blue-100 dark:bg-blue-900 flex items-center justify-center text-blue-600 dark:text-blue-400 font-bold shrink-0">
                                                            <Users size={20} />
                                                        </div>
                                                        <div className="flex-1 min-w-0">
                                                            <div className="flex justify-between items-baseline mb-0.5">
                                                                <h4 className="text-sm font-bold text-slate-800 dark:text-slate-200 truncate">Fórum do Condomínio</h4>
                                                                <span className="text-xs text-blue-600 dark:text-blue-400 font-medium whitespace-nowrap">Geral</span>
                                                            </div>
                                                            <p className="text-xs text-slate-500 dark:text-slate-400 truncate">Grupo partilhado</p>
                                                        </div>
                                                    </div>
                                                </div>
                                                {chatGroups.filter(g => g.members && (Object.values(g.members).map(String).includes(String(currentUserId)) || userRole === 'admin')).map(group => (
                                                    <div 
                                                        key={group.id} 
                                                        onClick={() => setActiveChat({ type: 'group', id: group.id, name: group.name })}
                                                        className={`p-3 border-b border-slate-50 dark:border-dark-border/50 cursor-pointer transition-colors ${activeChat.id === group.id ? 'bg-blue-50/50 dark:bg-blue-900/10' : 'hover:bg-slate-50 dark:hover:bg-dark-card'}`}
                                                    >
                                                        <div className="flex items-center gap-3">
                                                            <div className="w-10 h-10 rounded-full bg-purple-100 dark:bg-purple-900 flex items-center justify-center text-purple-600 dark:text-purple-400 font-bold shrink-0 text-sm">
                                                                <Users size={16} />
                                                            </div>
                                                            <div className="flex-1 min-w-0">
                                                                <div className="flex justify-between items-baseline mb-0.5">
                                                                    <h4 className="text-sm font-medium text-slate-700 dark:text-slate-300 truncate">{group.name}</h4>
                                                                    {activeChat.id === group.id && <span className="w-2 h-2 rounded-full bg-blue-500"></span>}
                                                                </div>
                                                                <p className="text-xs text-slate-500 dark:text-slate-500 truncate">Grupo</p>
                                                            </div>
                                                        </div>
                                                    </div>
                                                ))}
                                                {residents.filter(r => r.id !== currentUserId).map(res => (
                                                    <div 
                                                        key={res.id} 
                                                        onClick={() => setActiveChat({ type: 'private', id: res.id, name: res.name })}
                                                        className={`p-3 border-b border-slate-50 dark:border-dark-border/50 cursor-pointer transition-colors ${activeChat.id === res.id ? 'bg-blue-50/50 dark:bg-blue-900/10' : 'hover:bg-slate-50 dark:hover:bg-dark-card'}`}
                                                    >
                                                        <div className="flex items-center gap-3">
                                                            <div className="w-10 h-10 rounded-full bg-slate-200 dark:bg-slate-700 flex items-center justify-center text-slate-600 dark:text-slate-300 font-bold shrink-0 text-sm">
                                                                {res.name.substring(0, 2).toUpperCase()}
                                                            </div>
                                                            <div className="flex-1 min-w-0">
                                                                <div className="flex justify-between items-baseline mb-0.5">
                                                                    <h4 className="text-sm font-medium text-slate-700 dark:text-slate-300 truncate">{res.name} {res.unit && `(${res.unit})`}</h4>
                                                                    {activeChat.id === res.id && <span className="w-2 h-2 rounded-full bg-blue-500"></span>}
                                                                </div>
                                                                <p className="text-xs text-slate-500 dark:text-slate-500 truncate">Morador</p>
                                                            </div>
                                                        </div>
                                                    </div>
                                                ))}
                                            </div>
                                        </div>

                                        {/* Chat Area */}
                                        <div className="flex-1 flex flex-col h-full bg-slate-50/50 dark:bg-dark-bg/50">
                                            <div className="p-4 border-b border-slate-100 dark:border-dark-border bg-white dark:bg-dark-surface flex items-center justify-between">
                                                <div className="flex items-center gap-3">
                                                    <div className={`w-10 h-10 rounded-full flex items-center justify-center font-bold ${activeChat.type === 'global' ? 'bg-blue-100 dark:bg-blue-900 text-blue-600 dark:text-blue-400' : activeChat.type === 'group' ? 'bg-purple-100 dark:bg-purple-900 text-purple-600 dark:text-purple-400' : 'bg-slate-200 dark:bg-slate-700 text-slate-600 dark:text-slate-300'}`}>
                                                        {activeChat.type === 'global' || activeChat.type === 'group' ? <Users size={20} /> : activeChat.name.substring(0, 2).toUpperCase()}
                                                    </div>
                                                    <div>
                                                        <h3 className="font-bold text-slate-800 dark:text-white">{activeChat.name}</h3>
                                                        <p className="text-xs text-green-500 font-medium">{activeChat.type === 'global' ? 'Todos os moradores' : activeChat.type === 'group' ? 'Grupo Privado' : 'Privado'}</p>
                                                    </div>
                                                </div>
                                                <button className="text-slate-400 hover:text-slate-600 dark:hover:text-slate-200"><Info size={20}/></button>
                                            </div>

                                            <div className="flex-1 overflow-y-auto p-4 space-y-4 flex flex-col">
                                                <div className="text-center my-4"><span className="text-xs bg-slate-200/50 dark:bg-slate-800 text-slate-500 px-3 py-1 rounded-full">Mensagens</span></div>
                                                
                                                {messages.map((msg) => {
                                                    const isMe = msg.senderId === currentUserId;
                                                    const timeString = new Date(msg.timestamp).toLocaleTimeString([], {hour: '2-digit', minute:'2-digit'});
                                                    
                                                    return (
                                                        <div key={msg.id} className={`flex ${isMe ? 'justify-end' : 'justify-start'}`}>
                                                            <div className={`${isMe ? 'bg-blue-600 text-white rounded-2xl rounded-tr-sm' : 'bg-white dark:bg-dark-card border border-slate-100 dark:border-slate-800 text-slate-700 dark:text-slate-200 rounded-2xl rounded-tl-sm'} p-3 max-w-[80%] shadow-sm`}>
                                                                {!isMe && (
                                                                    <p className={`text-xs ${msg.role === 'admin' ? 'text-blue-600 dark:text-blue-400' : 'text-orange-600 dark:text-orange-400'} font-bold mb-1`}>
                                                                        {msg.senderName}
                                                                    </p>
                                                                )}
                                                                <p className="text-sm">{msg.text}</p>
                                                                <span className={`text-[10px] ${isMe ? 'text-blue-200' : 'text-slate-400'} block text-right mt-1`}>{timeString}</span>
                                                            </div>
                                                        </div>
                                                    );
                                                })}
                                            </div>

                                            <div className="p-4 bg-white dark:bg-dark-surface border-t border-slate-100 dark:border-dark-border">
                                                <form onSubmit={async (e) => { 
                                                    e.preventDefault(); 
                                                    if (!newMessageText.trim()) return;
                                                    
                                                    try {
                                                        const path = activeChat.type === 'global' 
                                                            ? 'mural_mensagens' 
                                                            : activeChat.type === 'group'
                                                                ? `mensagens_grupo/${activeChat.id}`
                                                                : `mensagens_privadas/${[currentUserId, activeChat.id].sort().join('_')}`;
                                                            
                                                        const newMsgRef = push(ref(db, path));
                                                        await set(newMsgRef, {
                                                            text: newMessageText,
                                                            senderId: currentUserId,
                                                            senderName: currentUserName,
                                                            role: userRole,
                                                            timestamp: Date.now()
                                                        });
                                                        setNewMessageText('');
                                                    } catch (error) {
                                                        console.error("Erro ao enviar mensagem:", error);
                                                        showNotification("Erro ao enviar mensagem.", "error");
                                                    }
                                                }} className="flex gap-2">
                                                    <button type="button" className="p-2 text-slate-400 hover:text-slate-600 dark:hover:text-slate-300 transition-colors hidden sm:block">
                                                        <Paperclip size={20} />
                                                    </button>
                                                    <input 
                                                        type="text" 
                                                        value={newMessageText}
                                                        onChange={(e) => setNewMessageText(e.target.value)}
                                                        placeholder="Escreva a sua mensagem..." 
                                                        className="flex-1 bg-slate-50 dark:bg-dark-bg border border-slate-200 dark:border-dark-border rounded-full px-4 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 dark:text-white"
                                                    />
                                                    <button type="submit" disabled={!newMessageText.trim()} className="p-2 bg-blue-600 text-white rounded-full hover:bg-blue-700 disabled:bg-blue-400 transition-colors shadow-sm flex items-center justify-center shrink-0 w-10 h-10">
                                                        <Send size={18} />
                                                    </button>
                                                </form>
                                            </div>
                                        </div>
                                    </div>
                                )}

                                {/* --- MAINTENANCE --- */}
                                {activeTab === 'maintenance' && <MaintenanceView />}

                                {/* --- PROFILE --- */}
                                {activeTab === 'profile' && <ProfileView theme={theme} setTheme={setTheme} />}

                            </div>
                        </div>

                        {/* --- Toast Notification --- */}
                        {notification && (
                            <div className={`fixed bottom-6 right-6 px-6 py-4 rounded-xl shadow-2xl flex items-center gap-3 animate-slide-up z-50 text-white ${notification.type === 'error' ? 'bg-red-600' : notification.type === 'warning' ? 'bg-orange-600' : 'bg-slate-800'}`}>
                                {notification.type === 'success' ? <CheckCircle size={20} className="text-green-400" /> : <AlertCircle size={20} />}
                                <span className="font-medium">{notification.message}</span>
                            </div>
                        )}

                        {/* --- Modals --- */}

                        {/* Resident Modal */}
                        <Modal isOpen={activeModal === 'resident'} onClose={handleCloseModal} title={editingItem ? "Editar Condómino" : "Novo Condómino"}>
                            <form onSubmit={handleSaveResident}>
                                <InputGroup label="Fração" name="unit" value={formData.unit || ''} onChange={handleInputChange} placeholder="Ex: 1º Esq" required />
                                <InputGroup label="Nome Completo" name="name" value={formData.name || ''} onChange={handleInputChange} placeholder="Nome do proprietário" required />
                                <InputGroup label="Email" type="email" name="email" value={formData.email || ''} onChange={handleInputChange} placeholder="email@exemplo.com" />
                                <div className="grid grid-cols-2 gap-4">
                                    <InputGroup label="Telemóvel" name="contact" value={formData.contact || ''} onChange={handleInputChange} placeholder="912 345 678" required />
                                    <InputGroup label="Palavra-passe" type="text" name="password" value={formData.password || ''} onChange={handleInputChange} placeholder={editingItem ? "Deixar em branco para manter" : "1234"} required={!editingItem} />
                                </div>
                                <div className="grid grid-cols-2 gap-4">
                                    <InputGroup label="Estado" name="status" value={formData.status || 'Pago'} onChange={handleInputChange} options={[{ value: 'Pago', label: 'Pago' }, { value: 'Pendente', label: 'Pendente' }, { value: 'Atrasado', label: 'Atrasado' }]} />
                                    <InputGroup label="Valor Pendente (€)" type="number" name="pending" value={formData.pending || 0} onChange={handleInputChange} />
                                </div>
                                <button type="submit" className="w-full bg-blue-600 hover:bg-blue-700 text-white font-bold py-3 rounded-lg mt-4 flex justify-center gap-2">
                                    <Save size={20} /> Guardar Condómino
                                </button>
                            </form>
                        </Modal>

                        {/* Emitir Fatura Modal */}
                        <Modal isOpen={activeModal === 'emitir_fatura'} onClose={handleCloseModal} title="Emitir Nova Fatura">
                            <form onSubmit={handleSaveFatura}>
                                <div className="mb-4">
                                    <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1">Condómino</label>
                                    <select 
                                        name="moradorId" 
                                        value={formData.moradorId || ''} 
                                        onChange={handleInputChange}
                                        className="w-full px-4 py-2 border border-slate-300 dark:border-dark-border rounded-lg bg-white dark:bg-dark-card text-slate-900 dark:text-white focus:ring-2 focus:ring-blue-500"
                                        required
                                    >
                                        <option value="">Selecione um morador...</option>
                                        {residents.map(r => (
                                            <option key={r.id} value={r.id}>{r.unit} - {r.name}</option>
                                        ))}
                                    </select>
                                </div>
                                <div className="grid grid-cols-2 gap-4">
                                    <InputGroup label="Categoria" name="categoria" value={formData.categoria || 'Quotas'} onChange={handleInputChange} options={[{value: 'Quotas', label: 'Quotas'}, {value: 'Luz', label: 'Luz'}, {value: 'Água', label: 'Água'}, {value: 'Aluguer', label: 'Aluguer'}, {value: 'Manutenção', label: 'Manutenção'}, {value: 'Outros', label: 'Outros'}]} />
                                    <InputGroup label="Valor (€)" type="number" name="valor" value={formData.valor || ''} onChange={handleInputChange} placeholder="0.00" required />
                                </div>
                                <InputGroup label="Data Vencimento" type="date" name="dataVencimento" value={formData.dataVencimento || ''} onChange={handleInputChange} required />
                                <button type="submit" className="w-full bg-blue-600 hover:bg-blue-700 text-white font-bold py-3 rounded-lg mt-4 flex justify-center gap-2 transition-colors">
                                    <FileText size={20} /> Emitir Fatura
                                </button>
                            </form>
                        </Modal>

                        {/* Finance Modal */}
                        <Modal isOpen={activeModal === 'finance'} onClose={handleCloseModal} title="Registar Movimento Financeiro">
                            <form onSubmit={handleSaveFinance}>
                                <div className="grid grid-cols-2 gap-4">
                                    <InputGroup label="Tipo" name="type" value={formData.type || 'expense'} onChange={handleInputChange} options={[{ value: 'income', label: 'Receita (+)' }, { value: 'expense', label: 'Despesa (-)' }]} />
                                    <InputGroup label="Data" type="date" name="date" value={formData.date || ''} onChange={handleInputChange} required />
                                </div>
                                <InputGroup label="Categoria" name="category" value={formData.category || ''} onChange={handleInputChange} placeholder="Ex: Limpeza, Elevadores, Quotas..." required />
                                <InputGroup label="Valor (€)" type="number" name="amount" value={formData.amount || ''} onChange={handleInputChange} placeholder="0.00" required />
                                <InputGroup label="Descrição" name="desc" value={formData.desc || ''} onChange={handleInputChange} placeholder="Detalhes do movimento" />
                                <button type="submit" className="w-full bg-slate-800 hover:bg-slate-900 dark:bg-slate-700 dark:hover:bg-slate-600 text-white font-bold py-3 rounded-lg mt-4 flex justify-center gap-2 transition-colors">
                                    <Save size={20} /> Registar Movimento
                                </button>
                            </form>
                        </Modal>

                        {/* Issue Modal */}
                        <Modal isOpen={activeModal === 'issue'} onClose={handleCloseModal} title="Reportar Ocorrência">
                            <form onSubmit={handleSaveIssue}>
                                <InputGroup label="Título do Problema" name="title" value={formData.title || ''} onChange={handleInputChange} placeholder="Ex: Lâmpada fundida" required />
                                <InputGroup label="Localização" name="location" value={formData.location || ''} onChange={handleInputChange} placeholder="Ex: Hall de entrada" required />
                                <div className="grid grid-cols-2 gap-4">
                                    <InputGroup label="Prioridade" name="priority" value={formData.priority || 'Média'} onChange={handleInputChange} options={[{ value: 'Baixa', label: 'Baixa' }, { value: 'Média', label: 'Média' }, { value: 'Alta', label: 'Alta' }]} />
                                    <InputGroup label="Data" type="date" name="date" value={formData.date || ''} onChange={handleInputChange} />
                                </div>
                                <button type="submit" className="w-full bg-orange-600 hover:bg-orange-700 text-white font-bold py-3 rounded-lg mt-4 flex justify-center gap-2">
                                    <Save size={20} /> Reportar
                                </button>
                            </form>
                        </Modal>

                        {/* Booking Modal */}
                        <Modal isOpen={activeModal === 'booking'} onClose={handleCloseModal} title="Nova Reserva">
                            <form onSubmit={handleSaveBooking}>
                                <InputGroup label="Espaço" name="facility" value={formData.facility || 'gym'} onChange={handleInputChange} options={[{ value: 'gym', label: 'Ginásio' }, { value: 'hall', label: 'Salão de Festas' }, { value: 'park', label: 'Parque de Jogos' }]} />
                                <div className="grid grid-cols-2 gap-4">
                                    <InputGroup label="Data" type="date" name="date" value={formData.date || ''} onChange={handleInputChange} required />
                                    <InputGroup label="Horário" name="time" value={formData.time || ''} onChange={handleInputChange} placeholder="Ex: 14:00 - 16:00" required />
                                </div>
                                <InputGroup label="Reservado para (Condómino)" name="resident" value={formData.resident || ''} onChange={handleInputChange} placeholder="Nome do residente" required disabled={userRole !== 'admin'} />

                                <div className="bg-slate-50 dark:bg-dark-card p-4 rounded-lg border border-slate-200 dark:border-dark-border mt-2 mb-4 flex justify-between items-center transition-colors">
                                    <span className="text-sm font-medium text-slate-600 dark:text-slate-300">Custo Estimado:</span>
                                    <span className="text-xl font-bold text-slate-800 dark:text-white">{formData.cost || 0}€</span>
                                </div>

                                <button type="submit" className="w-full bg-purple-600 hover:bg-purple-700 text-white font-bold py-3 rounded-lg flex justify-center gap-2">
                                    <CheckCircle size={20} /> Confirmar Reserva
                                </button>
                            </form>
                        </Modal>

                        <Modal isOpen={isCreateGroupModalOpen} onClose={() => setIsCreateGroupModalOpen(false)} title="Criar Novo Grupo">
                            <form onSubmit={async (e) => {
                                e.preventDefault();
                                if (!newGroupName.trim() || newGroupMembers.length === 0) {
                                    showNotification('Selecione um nome e pelo menos um membro.', 'warning');
                                    return;
                                }
                                try {
                                    const groupId = 'grupo_' + Date.now();
                                    const allMembers = [...newGroupMembers, currentUserId];
                                    await set(ref(db, `grupos_chat/${groupId}`), {
                                        id: groupId,
                                        name: newGroupName,
                                        members: allMembers,
                                        createdBy: currentUserId,
                                        timestamp: Date.now()
                                    });
                                    setIsCreateGroupModalOpen(false);
                                    setActiveChat({ type: 'group', id: groupId, name: newGroupName });
                                    showNotification('Grupo criado com sucesso.', 'success');
                                } catch (err) {
                                    showNotification('Erro ao criar grupo.', 'error');
                                }
                            }}>
                                <InputGroup label="Nome do Grupo" name="newGroupName" value={newGroupName} onChange={(e) => setNewGroupName(e.target.value)} required />
                                
                                <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1 mt-4">Selecionar Moradores</label>
                                <div className="max-h-48 overflow-y-auto border border-slate-300 dark:border-dark-border rounded-lg bg-white dark:bg-dark-card p-2">
                                    {residents.filter(r => r.id !== currentUserId).map(r => (
                                        <div key={r.id} className="flex items-center gap-2 p-2 hover:bg-slate-50 dark:hover:bg-slate-800 rounded">
                                            <input type="checkbox" id={`chk_${r.id}`} checked={newGroupMembers.includes(r.id)} 
                                                onChange={(e) => {
                                                    if (e.target.checked) setNewGroupMembers([...newGroupMembers, r.id]);
                                                    else setNewGroupMembers(newGroupMembers.filter(id => id !== r.id));
                                                }}
                                                className="w-4 h-4 text-blue-600 rounded border-gray-300 focus:ring-blue-500"
                                            />
                                            <label htmlFor={`chk_${r.id}`} className="text-sm text-slate-700 dark:text-slate-300 cursor-pointer select-none">{r.name} {r.unit ? `(${r.unit})` : ''}</label>
                                        </div>
                                    ))}
                                </div>
                                <button type="submit" className="w-full bg-blue-600 hover:bg-blue-700 text-white font-bold py-3 rounded-lg flex justify-center gap-2 mt-4 transition-colors">
                                    <CheckCircle size={20} /> Criar Grupo
                                </button>
                            </form>
                        </Modal>

                    </main>
                </div>
            );
        }

        const root = createRoot(document.getElementById('root'));
        root.render(
            <ErrorBoundary>
                <App />
            </ErrorBoundary>
        );