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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Admin Dashboard - Loan & Device Management</title>
    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
        :root {
            --primary: #4f46e5; --secondary: #db2777; --success: #10b981;
            --warning: #f59e0b; --danger: #ef4444; --info: #3b82f6;
        }
        body { font-family: 'Inter', sans-serif; background-color: #f1f5f9; }
        .card { background: white; border-radius: 16px; box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1); }
        .status-badge { padding: 4px 12px; border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
        .active-badge { background-color: #ecfdf5; color: #065f46; }
        .blocked-badge, .on-hold-badge { background-color: #fefce8; color: #854d0e; }
        .paid-off-badge { background-color: #dcfce7; color: #166534; }
        .partial-badge { background-color: #fefce8; color: #854d0e; }
        .unpaid-badge { background-color: #fee2e2; color: #991b1b; }
        .form-input { border: 1px solid #e2e8f0; border-radius: 10px; padding: 10px 14px; width: 100%; background-color: #f8fafc; }
        .form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15); outline: none; }
        .toast { position: fixed; bottom: 30px; right: 30px; padding: 16px 24px; border-radius: 12px; color: white; font-weight: 500; box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15); z-index: 1050; transform: translateY(120px); opacity: 0; transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55); }
        .toast.show { transform: translateY(0); opacity: 1; }
        .btn { border-radius: 10px; padding: 12px 24px; font-weight: 600; transition: all 0.3s; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
        .modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 1000; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
        .modal-overlay.active { opacity: 1; pointer-events: all; }
        .modal-content { background: white; border-radius: 16px; width: 95%; max-width: 600px; max-height: 90vh; overflow-y: auto; transform: scale(0.95); opacity: 0; transition: all 0.3s ease-out; }
        .modal-overlay.active .modal-content { transform: scale(1); opacity: 1; }
        .tab-button { padding: 10px 20px; border-radius: 8px; font-weight: 600; }
        .tab-button.active { color: var(--primary); background-color: #eef2ff; }
    </style>
</head>
<body class="p-4 md:p-8">
    <div id="toast-container" class="fixed bottom-0 right-0 p-8 space-y-3 z-50"></div>
    <div id="modal-container"></div>

    <div class="max-w-7xl mx-auto space-y-8">
        <!-- HEADER -->
        <div class="flex flex-col md:flex-row justify-between items-center">
            <div>
                <h1 class="text-3xl font-bold text-gray-800">Admin Dashboard</h1>
                <p class="text-gray-600 mt-1">Overview of your loan and device portfolio.</p>
            </div>
            <button id="open-add-modal-btn" class="btn bg-primary text-white mt-4 md:mt-0">
                <i class="fas fa-plus-circle mr-2"></i> Add New Entry
            </button>
        </div>

        <!-- DASHBOARD STATS -->
        <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6">
            <!-- Financial KPIs -->
            <div class="card p-5 flex items-center space-x-4 col-span-1 md:col-span-2 lg:col-span-1">
                <div class="bg-indigo-100 p-4 rounded-full"><i class="fas fa-landmark fa-2x text-indigo-600"></i></div>
                <div>
                    <p class="text-gray-500">Total Loan Value</p>
                    <p class="text-2xl font-bold text-gray-800" id="stat-total-loan">Rs.0</p>
                </div>
            </div>
            <div class="card p-5 flex items-center space-x-4">
                <div class="bg-green-100 p-4 rounded-full"><i class="fas fa-check-double fa-2x text-green-600"></i></div>
                <div>
                    <p class="text-gray-500">Total Collected</p>
                    <p class="text-2xl font-bold text-gray-800" id="stat-total-collected">Rs.0</p>
                </div>
            </div>
            <div class="card p-5 flex items-center space-x-4">
                <div class="bg-red-100 p-4 rounded-full"><i class="fas fa-file-invoice-dollar fa-2x text-red-600"></i></div>
                <div>
                    <p class="text-gray-500">Total Outstanding</p>
                    <p class="text-2xl font-bold text-gray-800" id="stat-total-outstanding">Rs.0</p>
                </div>
            </div>
            <!-- Chart -->
            <div class="card p-5 lg:col-span-1 md:col-span-2 col-span-1">
                <h3 class="font-bold text-gray-800 mb-2">Portfolio Status</h3>
                <canvas id="status-chart"></canvas>
            </div>
        </div>
        
        <!-- DATA TABLE -->
        <div class="card p-4 sm:p-6">
            <div class="flex flex-col md:flex-row justify-between items-center mb-4 border-b pb-4 gap-4">
                 <div class="flex-wrap flex space-x-2">
                    <button class="tab-button active" data-tab="all">All (<span id="count-all">0</span>)</button>
                    <button class="tab-button" data-tab="device">Devices (<span id="count-device">0</span>)</button>
                    <button class="tab-button" data-tab="loan">Loans (<span id="count-loan">0</span>)</button>
                </div>
                <div class="flex space-x-3 w-full md:w-auto">
                    <div class="relative flex-grow">
                        <input type="text" id="search-input" class="form-input pl-10 w-full" placeholder="Search...">
                        <i class="fas fa-search absolute left-4 top-1/2 -translate-y-1/2 text-gray-400"></i>
                    </div>
                    <button id="export-btn" class="btn bg-gray-700 hover:bg-gray-800 text-white" title="Export as CSV"><i class="fas fa-file-csv"></i></button>
                </div>
            </div>
            
            <div class="overflow-x-auto">
                <table class="w-full text-sm">
                    <thead>
                        <tr class="text-left text-gray-500 font-medium border-b-2 border-gray-200">
                            <th class="p-3">User / Details</th>
                            <th class="p-3">Loan Progress</th>
                            <th class="p-3">Status</th>
                            <th class="p-3 text-right">Actions</th>
                        </tr>
                    </thead>
                    <tbody id="entries-table" class="divide-y divide-gray-100"></tbody>
                </table>
                <div id="empty-state" class="py-16 text-center hidden">
                    <i class="fas fa-inbox text-5xl text-gray-300 mb-4"></i>
                    <h3 class="text-lg font-medium text-gray-700">No Entries Found</h3>
                    <p class="text-gray-500 mt-1">Click "Add New Entry" to get started.</p>
                </div>
            </div>
        </div>
    </div>

    <script>
    document.addEventListener('DOMContentLoaded', () => {
        // --- STATE & CONFIG ---
        let entries = JSON.parse(localStorage.getItem('loanAndDeviceApp_v3')) || [];
        let activeTab = 'all';
        let statusChart = null;

        // --- DOM ELEMENTS ---
        const modalContainer = document.getElementById('modal-container');
        const entriesTable = document.getElementById('entries-table');
        const emptyState = document.getElementById('empty-state');
        const searchInput = document.getElementById('search-input');
        // Add more DOM element references here as needed

        // --- TEMPLATES (kept concise for brevity, full logic in functions) ---
        const modalTemplate = (type, entry = {}) => { /* ... see previous version, unchanged ... */ };

        // --- HELPER FUNCTIONS ---
        const saveData = () => localStorage.setItem('loanAndDeviceApp_v3', JSON.stringify(entries));
        const formatCurrency = (amount) => `Rs.${(amount || 0).toLocaleString('en-IN')}`;
        const getFileAsBase64 = (file) => new Promise((resolve) => {
            if (!file) { resolve(null); return; }
            const reader = new FileReader();
            reader.readAsDataURL(file);
            reader.onload = () => resolve({ name: file.name, data: reader.result });
        });
        const showToast = (message, type = 'info') => {
            const container = document.getElementById('toast-container');
            if(!container) return;
            const toast = document.createElement('div');
            const icons = { success: 'fa-check-circle', error: 'fa-times-circle', info: 'fa-info-circle', warning: 'fa-exclamation-triangle' };
            toast.className = `toast ${type} flex items-center space-x-3`;
            toast.innerHTML = `<i class="fas ${icons[type]}"></i><span>${message}</span>`;
            container.prepend(toast);
            setTimeout(() => toast.classList.add('show'), 10);
            setTimeout(() => {
                toast.classList.remove('show');
                toast.addEventListener('transitionend', () => toast.remove());
            }, 3000);
        };

        // --- DASHBOARD & UI RENDERING ---
        const updateUI = () => {
            renderDashboardStats();
            renderDashboardChart();
            renderTable();
            updateTabCounts();
        };

        const renderDashboardStats = () => {
            let totalLoan = 0, totalCollected = 0;
            entries.forEach(e => {
                totalLoan += e.totalAmount;
                totalCollected += e.payments.reduce((sum, p) => sum + p.amount, 0);
            });
            document.getElementById('stat-total-loan').textContent = formatCurrency(totalLoan);
            document.getElementById('stat-total-collected').textContent = formatCurrency(totalCollected);
            document.getElementById('stat-total-outstanding').textContent = formatCurrency(totalLoan - totalCollected);
        };
        
        const renderDashboardChart = () => {
            const ctx = document.getElementById('status-chart').getContext('2d');
            let statuses = { 'Active - In Progress': 0, 'Paid Off': 0, 'On Hold / Blocked': 0, 'Active - Unpaid': 0 };

            entries.forEach(e => {
                const paidAmount = e.payments.reduce((sum, p) => sum + p.amount, 0);
                if (e.status !== 'Active') {
                    statuses['On Hold / Blocked']++;
                } else if (paidAmount >= e.totalAmount) {
                    statuses['Paid Off']++;
                } else if (paidAmount > 0) {
                    statuses['Active - In Progress']++;
                } else {
                    statuses['Active - Unpaid']++;
                }
            });

            if (statusChart) statusChart.destroy();
            
            statusChart = new Chart(ctx, {
                type: 'doughnut',
                data: {
                    labels: Object.keys(statuses),
                    datasets: [{
                        data: Object.values(statuses),
                        backgroundColor: ['#3b82f6', '#10b981', '#f59e0b', '#ef4444'],
                        borderColor: '#ffffff',
                        borderWidth: 2
                    }]
                },
                options: {
                    responsive: true,
                    plugins: { legend: { position: 'bottom', labels: { boxWidth: 12 } } }
                }
            });
        };

        const renderTable = () => {
            const searchTerm = searchInput.value.toLowerCase();
            const filteredEntries = entries.filter(e => {
                const matchesTab = activeTab === 'all' || e.type === activeTab;
                if (!matchesTab) return false;
                const searchCorpus = [e.userName, e.mac, e.deviceName, e.loanPurpose, e.phone, e.address].join(' ').toLowerCase();
                return !searchTerm || searchCorpus.includes(searchTerm);
            });
            entriesTable.innerHTML = '';
            emptyState.classList.toggle('hidden', filteredEntries.length > 0);
            filteredEntries.forEach(entry => { /* ... row rendering logic, same as previous ... */ });
            // Full row rendering logic from previous version for brevity
            filteredEntries.forEach(entry => {
                const paidAmount = entry.payments.reduce((sum, p) => sum + p.amount, 0);
                const paidPercent = entry.totalAmount > 0 ? (paidAmount / entry.totalAmount) * 100 : 0;
                const isDevice = entry.type === 'device';
                const statusClass = `status-badge ${entry.status.toLowerCase().replace(/[\s/]+/g, '-')}-badge`;

                const row = document.createElement('tr');
                row.className = 'hover:bg-gray-50';
                row.innerHTML = `
                    <td class="p-3">
                        <div class="flex items-center gap-3">
                           <i class="fas ${isDevice ? 'fa-wifi text-primary' : 'fa-hand-holding-usd text-secondary'} fa-lg"></i>
                           <div>
                                <div class="font-bold text-gray-800">${entry.userName}</div>
                                <div class="text-gray-500">${isDevice ? (entry.mac || 'N/A') : (entry.loanPurpose || 'N/A')}</div>
                           </div>
                        </div>
                    </td>
                    <td class="p-3">
                        <div class="w-full bg-gray-200 rounded-full h-2.5">
                            <div class="bg-green-500 h-2.5 rounded-full" style="width: ${paidPercent}%"></div>
                        </div>
                        <div class="text-xs text-gray-600 mt-1 flex justify-between">
                            <span class="text-green-600 font-medium">Paid: ${paidPercent.toFixed(0)}%</span>
                            <span class="text-red-600 font-medium">Due: ${(100 - paidPercent).toFixed(0)}%</span>
                        </div>
                    </td>
                    <td class="p-3"><span class="${statusClass}">${entry.status}</span></td>
                    <td class="p-3 text-right">
                        <div class="inline-flex space-x-2">
                            <button class="action-btn" data-action="payment" data-id="${entry.id}" title="Manage Payments"><i class="fas fa-money-check-alt"></i></button>
                            <button class="action-btn" data-action="edit" data-id="${entry.id}" title="Edit Entry"><i class="fas fa-edit"></i></button>
                            <button class="action-btn" data-action="delete" data-id="${entry.id}" title="Delete Entry"><i class="fas fa-trash"></i></button>
                        </div>
                    </td>
                `;
                entriesTable.appendChild(row);
            });
        };

        const updateTabCounts = () => {
             document.getElementById('count-all').textContent = entries.length;
             document.getElementById('count-device').textContent = entries.filter(e => e.type === 'device').length;
             document.getElementById('count-loan').textContent = entries.filter(e => e.type === 'loan').length;
        };
        
        // --- MODAL & FORM LOGIC ---
        const openModal = (html) => {
            modalContainer.innerHTML = html;
            const form = modalContainer.querySelector('form');
            if(form) {
                const typeSelect = form.querySelector('select[name="type"]');
                const toggle = () => {
                    const isDevice = typeSelect.value === 'device';
                    form.querySelector('.device-fields').style.display = isDevice ? 'grid' : 'none';
                    form.querySelector('.loan-fields').style.display = isDevice ? 'none' : 'block';
                };
                typeSelect.addEventListener('change', toggle);
                toggle();
            }
        };
        const closeModal = () => modalContainer.innerHTML = '';
        const openAddModal = () => openModal(modalTemplate('add')); // modalTemplate is the same as previous version
        const openEditModal = (id) => {
            const entry = entries.find(e => e.id == id);
            openModal(modalTemplate('edit', entry)); // modalTemplate is the same as previous version
        };
        const openPaymentModal = (id) => { /* ... same as previous version ... */ };
        
        // --- CRUD & ACTIONS ---
        const handleFormSubmit = async (e) => { /* ... same as previous version ... */ };
        const deleteEntry = (id) => {
            if (confirm('Delete this entry and all its history? This is irreversible.')) {
                entries = entries.filter(e => e.id != id);
                saveData();
                updateUI();
                showToast('Entry deleted.', 'success');
            }
        };
        const addPayment = (e) => {
            e.preventDefault();
            const form = e.target;
            const id = form.dataset.id;
            const entry = entries.find(e => e.id == id);
            const amount = parseFloat(form.elements.amount.value);
            
            if (!entry || isNaN(amount) || amount <= 0) {
                showToast('Invalid amount.', 'error');
                return;
            }
            
            entry.payments.push({ id: Date.now(), date: new Date().toISOString(), amount });
            saveData();
            openPaymentModal(id); // Re-open the modal to refresh it
            updateUI();
            showToast('Payment added successfully!', 'success');
        };

        // --- EVENT DELEGATION ---
        document.addEventListener('click', (e) => {
            const target = e.target;
            // Modal closing
            if (target.matches('.modal-overlay, .action-btn-close, .action-btn-close i')) closeModal();
            // Open "Add" modal
            if (target.closest('#open-add-modal-btn')) openAddModal();
            // Table actions
            const actionBtn = target.closest('button[data-action]');
            if (actionBtn && actionBtn.closest('tbody')) {
                const { action, id } = actionBtn.dataset;
                if (action === 'edit') openEditModal(id);
                if (action === 'delete') deleteEntry(id);
                if (action === 'payment') openPaymentModal(id);
            }
             // Tab switching
            const tabBtn = target.closest('.tab-button');
            if (tabBtn) {
                document.querySelectorAll('.tab-button').forEach(btn => btn.classList.remove('active'));
                tabBtn.classList.add('active');
                activeTab = tabBtn.dataset.tab;
                renderTable();
            }
        });

        document.addEventListener('submit', (e) => {
            if (e.target.matches('#add-form, #edit-form')) handleFormSubmit(e);
            if (e.target.matches('#add-payment-form')) addPayment(e); // *** FIX: Delegated payment submission
        });

        searchInput.addEventListener('input', renderTable);
        // Add exportBtn listener here if needed

        // --- INITIALIZATION ---
        const initializeSampleData = () => {
             if (localStorage.getItem('loanAndDeviceApp_v3')) return;
             entries = [
                { id: 1, type: 'loan', userName: 'Shehroz Ali', totalAmount: 500000, installmentDay: 22, installmentAmount: 20000, phone: '0300-1234567', address: '123 Main St, Karachi', loanPurpose: 'Car Purchase', payments: [{id: 101, date: new Date().toISOString(), amount: 50000, isInitial: true}, {id: 102, date: new Date().toISOString(), amount: 20000}], documents: [], addedTime: new Date().toISOString(), status: 'Active' },
                { id: 2, type: 'device', userName: 'Fatima Jilani', totalAmount: 15000, mac: 'AA:BB:CC:11:22:33', deviceName: 'Office Router', payments: [{id:201, date: new Date().toISOString(), amount: 15000, isInitial: true}], addedTime: new Date().toISOString(), status: 'Paid Off' },
                { id: 3, type: 'loan', userName: 'Bilal Ahmed', totalAmount: 75000, installmentDay: 1, installmentAmount: 10000, phone: '', address: '', loanPurpose: 'Business Startup', payments: [], documents: [], addedTime: new Date().toISOString(), status: 'Active' },
                { id: 4, type: 'device', userName: 'Guest Wifi', totalAmount: 8000, mac: '11:22:33:AA:BB:CC', deviceName: 'Lobby Access Point', payments: [], addedTime: new Date().toISOString(), status: 'Blocked' }
             ];
             saveData();
        };
        
        // --- Full function definitions needed by the slimmed down code above ---
        // (These are complex and kept here for readability)
        const paymentModalLogic = {
             open: (id) => {
                const entry = entries.find(e => e.id == id);
                if (!entry) return;
                const paidAmount = entry.payments.reduce((sum, p) => sum + p.amount, 0);
                let nextPaymentDateStr = 'N/A', totalInstallments = 'N/A';
                if (entry.installmentDay && entry.installmentAmount > 0) {
                    totalInstallments = Math.ceil(entry.totalAmount / entry.installmentAmount);
                    const today = new Date();
                    let nextDate = new Date(today.getFullYear(), today.getMonth(), entry.installmentDay);
                    if (today.getDate() > entry.installmentDay) nextDate.setMonth(nextDate.getMonth() + 1);
                    nextPaymentDateStr = nextDate.toLocaleDateString('en-GB', { day: 'numeric', month: 'long', year: 'numeric' });
                }
                let docsHtml = '<p class="text-sm text-gray-500">No documents attached.</p>';
                if (entry.documents && entry.documents.length > 0) {
                    docsHtml = entry.documents.map(doc => `<a href="${doc.data}" download="${doc.name}" class="text-indigo-600 hover:underline flex items-center gap-2"><i class="fas fa-file-alt"></i> ${doc.name}</a>`).join('');
                }
                const modalHtml = `
                <div class="modal-overlay active" id="payment-modal-overlay">
                    <div class="modal-content">
                        <div class="p-6 space-y-4">
                            <div class="flex justify-between items-center"><h3 class="text-xl font-bold text-gray-800">Payment Details</h3><button type="button" class="action-btn-close"><i class="fas fa-times"></i></button></div>
                            <div class="grid grid-cols-2 gap-4 text-sm p-4 bg-gray-50 rounded-lg">
                                <div><p class="text-gray-500">User</p><p class="font-semibold">${entry.userName}</p></div>
                                ${entry.phone ? `<div><p class="text-gray-500">Phone</p><p class="font-semibold">${entry.phone}</p></div>` : ''}
                                ${entry.address ? `<div class="col-span-2"><p class="text-gray-500">Address</p><p class="font-semibold">${entry.address}</p></div>` : ''}
                            </div>
                            <div class="grid grid-cols-3 gap-4 text-center">
                                <div class="p-2 rounded-lg bg-indigo-50"><p class="text-sm">Total Loan</p><p class="font-bold">${formatCurrency(entry.totalAmount)}</p></div>
                                <div class="p-2 rounded-lg bg-green-50"><p class="text-sm">Paid</p><p class="font-bold text-green-600">${formatCurrency(paidAmount)}</p></div>
                                <div class="p-2 rounded-lg bg-red-50"><p class="text-sm">Remaining</p><p class="font-bold text-red-600">${formatCurrency(entry.totalAmount - paidAmount)}</p></div>
                            </div>
                            <div class="border-t pt-4 space-y-3"><h4 class="font-semibold">Installment Details</h4><div class="grid grid-cols-3 gap-4 text-sm text-center"><div><p class="text-gray-500">Next Payment</p><p class="font-semibold">${nextPaymentDateStr}</p></div><div><p class="text-gray-500">Installment</p><p class="font-semibold">${formatCurrency(entry.installmentAmount)}</p></div><div><p class="text-gray-500">Total Installments</p><p class="font-semibold">${totalInstallments}</p></div></div></div>
                            <div class="border-t pt-4 space-y-2"><h4 class="font-semibold">Documents</h4>${docsHtml}</div>
                            <div class="border-t pt-4"><h4 class="font-semibold mb-2">Payment History</h4><div class="max-h-32 overflow-y-auto pr-2" id="payment-history-list"></div></div>
                            <form id="add-payment-form" data-id="${id}" class="flex gap-3 pt-4 border-t"><input type="number" name="amount" class="form-input flex-grow" placeholder="Amount (Rs.)" required><button type="submit" class="btn bg-green-600 text-white hover:bg-green-700">Add</button></form>
                        </div></div></div>`;
                openModal(modalHtml);
                this.renderHistory(entry);
            },
            renderHistory: (entry) => {
                 const list = document.getElementById('payment-history-list'); list.innerHTML = '';
                 if (entry.payments.length === 0) { list.innerHTML = '<p class="text-sm text-gray-500">No payments recorded.</p>'; return; }
                 [...entry.payments].reverse().forEach(p => {
                     const item = document.createElement('div');
                     item.className = 'text-sm flex justify-between items-center p-2 rounded hover:bg-gray-100';
                     item.innerHTML = `<div><p class="font-semibold">${formatCurrency(p.amount)}</p><p class="text-xs text-gray-500">${new Date(p.date).toLocaleString()}</p></div>${p.isInitial ? '<span class="text-xs font-bold text-blue-600">DOWN PAYMENT</span>' : ''}`;
                     list.appendChild(item);
                 });
            }
        };
        openPaymentModal = paymentModalLogic.open.bind(paymentModalLogic);
        handleFormSubmit = async (e) => {
            e.preventDefault();
            const form = e.target; const isEdit = form.id === 'edit-form'; const id = isEdit ? form.dataset.id : Date.now();
            const formData = new FormData(form); const data = Object.fromEntries(formData.entries());
            let entry = isEdit ? entries.find(e => e.id == id) : { id, payments: [], documents: [] };
            const paidAmount = isEdit ? entry.payments.reduce((sum, p) => sum + p.amount, 0) : 0;
            const downPayment = isEdit ? (entry.payments.find(p => p.isInitial)?.amount || 0) : 0;
            if (parseFloat(data.totalAmount) < paidAmount - downPayment) { showToast('Total amount cannot be less than payments already made.', 'error'); return; }
            Object.assign(entry, {
                type: data.type, userName: data.userName, totalAmount: parseFloat(data.totalAmount),
                mac: data.mac || null, deviceName: data.deviceName || null, loanPurpose: data.loanPurpose || null,
                phone: data.phone || null, address: data.address || null,
                installmentDay: data.installmentDay ? parseInt(data.installmentDay) : null,
                installmentAmount: data.installmentAmount ? parseFloat(data.installmentAmount) : null,
                status: entry.status || 'Active'
            });
            const doc = await getFileAsBase64(data.document); if (doc) entry.documents = [doc];
            if (!isEdit) {
                const initialPayment = parseFloat(data.initialPayment) || 0;
                if (initialPayment > 0) entry.payments.push({ id: Date.now(), date: new Date().toISOString(), amount: initialPayment, isInitial: true });
                entry.addedTime = new Date().toISOString(); entries.unshift(entry);
            }
            saveData(); updateUI(); closeModal(); showToast(`Entry ${isEdit ? 'updated' : 'added'}!`, 'success');
        };
        const modalTemplateText = `
        <div class="modal-overlay active" id="form-modal-overlay">
            <div class="modal-content">
                <form id="{formId}" data-id="{id}">
                    <div class="p-6">
                        <div class="flex justify-between items-center mb-6"><h3 class="text-xl font-bold text-gray-800">{title}</h3><button type="button" class="action-btn-close"><i class="fas fa-times"></i></button></div>
                        <div class="space-y-4">
                            <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                                <div><label class="font-medium text-sm">Entry Type</label><select name="type" class="form-input mt-1" {disabled}><option value="device" {deviceSelected}>Device</option><option value="loan" {loanSelected}>Loan</option></select></div>
                                <div><label class="font-medium text-sm">User Name</label><input type="text" name="userName" class="form-input mt-1" value="{userName}" required></div>
                            </div>
                            <div class="form-section device-fields grid grid-cols-1 md:grid-cols-2 gap-4">
                                <div><label class="font-medium text-sm">MAC Address</label><input type="text" name="mac" class="form-input mt-1" value="{mac}"></div>
                                <div><label class="font-medium text-sm">Device Name</label><input type="text" name="deviceName" class="form-input mt-1" value="{deviceName}"></div>
                            </div>
                            <div class="form-section loan-fields space-y-4">
                                <div><label class="font-medium text-sm">Loan Purpose</label><input type="text" name="loanPurpose" class="form-input mt-1" value="{loanPurpose}"></div>
                                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                                    <div><label class="font-medium text-sm">Phone (Optional)</label><input type="tel" name="phone" class="form-input mt-1" value="{phone}"></div>
                                    <div><label class="font-medium text-sm">Address (Optional)</label><input type="text" name="address" class="form-input mt-1" value="{address}"></div>
                                </div>
                                <div><label class="font-medium text-sm">Document (Optional)</label><input type="file" name="document" class="form-input mt-1"></div>
                            </div>
                            <div class="border-t pt-4 space-y-4">
                                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                                    <div><label class="font-medium text-sm">Total Loan (Rs.)</label><input type="number" name="totalAmount" class="form-input mt-1" value="{totalAmount}" required min="1"></div>
                                    <div><label class="font-medium text-sm">{initialPaymentLabel} (Rs.)</label><input type="number" name="initialPayment" class="form-input mt-1" value="{initialPayment}" min="0" {initialPaymentDisabled}></div>
                                </div>
                                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                                    <div><label class="font-medium text-sm">Installment Day (1-31)</label><input type="number" name="installmentDay" class="form-input mt-1" min="1" max="31" value="{installmentDay}"></div>
                                    <div><label class="font-medium text-sm">Installment Amount (Rs.)</label><input type="number" name="installmentAmount" class="form-input mt-1" min="1" value="{installmentAmount}"></div>
                                </div>
                            </div>
                        </div>
                    </div>
                    <div class="p-4 bg-gray-50 text-right"><button type="submit" class="btn btn-primary">{btnText}</button></div>
                </form>
            </div>
        </div>`;
        const _modalTemplate = (type, entry = {}) => {
            const isEdit = type === 'edit';
            return modalTemplateText
                .replace('{formId}', isEdit ? 'edit-form' : 'add-form')
                .replace('{id}', entry.id || '')
                .replace('{title}', isEdit ? 'Edit Entry' : 'Add New Entry')
                .replace('{disabled}', isEdit ? 'disabled' : '')
                .replace('{deviceSelected}', (entry.type || 'device') === 'device' ? 'selected' : '')
                .replace('{loanSelected}', entry.type === 'loan' ? 'selected' : '')
                .replace('{userName}', entry.userName || '')
                .replace('{mac}', entry.mac || '')
                .replace('{deviceName}', entry.deviceName || '')
                .replace('{loanPurpose}', entry.loanPurpose || '')
                .replace('{phone}', entry.phone || '')
                .replace('{address}', entry.address || '')
                .replace('{totalAmount}', entry.totalAmount || '')
                .replace('{initialPaymentLabel}', isEdit ? 'Current Down Payment' : 'Down Payment')
                .replace('{initialPayment}', isEdit ? (entry.payments?.find(p => p.isInitial)?.amount || 0) : '')
                .replace('{initialPaymentDisabled}', isEdit ? 'disabled' : '')
                .replace('{installmentDay}', entry.installmentDay || '')
                .replace('{installmentAmount}', entry.installmentAmount || '')
                .replace('{btnText}', isEdit ? 'Save Changes' : 'Add Entry');
        };
        modalTemplate = _modalTemplate;
        
        initializeSampleData();
        updateUI();
    });
    </script>
</body>
</html>