Primer version funcional

views/reports/pdf_expenses.php

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+<style>
+    table {
+        width: 100%;
+        border-collapse: collapse;
+        font-size: 8pt;
+    }
+    th, td {
+        border: 1px solid #000;
+        padding: 4px;
+        text-align: center;
+    }
+    th {
+        background-color: #eee;
+    }
+    .print-title {
+        text-align: center;
+        font-size: 14pt;
+        margin-bottom: 10px;
+    }
+    .print-date {
+        text-align: right;
+        font-size: 8pt;
+        margin-bottom: 10px;
+    }
+    .text-danger {
+        color: red;
+    }
+    .text-success {
+        color: green;
+    }
+</style>
+
+<div class="print-title">Condominio IBIZA-Cto Sierra Morena 152 - Reporte de Gastos</div>
+<div class="print-date">Fecha de generación: <?= date('d/m/Y H:i') ?></div>
+
+<?php if (empty($expenses)): ?>
+    <p>No hay gastos registrados.</p>
+<?php else: ?>
+    <table>
+        <thead>
+            <tr style="background-color: #f8d7da;">
+                <th>Fecha</th>
+                <th>Descripción</th>
+                <th>Categoría</th>
+                <th>Monto</th>
+            </tr>
+        </thead>
+        <tbody>
+            <?php 
+            $totalExpenses = 0;
+            foreach ($expenses as $exp):
+                $totalExpenses += $exp['amount'];
+            ?>
+                <tr>
+                    <td><?= date('d/m/Y', strtotime($exp['expense_date'])) ?></td>
+                    <td style="text-align: left;"><?= htmlspecialchars($exp['description']) ?></td>
+                    <td><?= htmlspecialchars($exp['category'] ?? '-') ?></td>
+                    <td class="text-end">$<?= number_format($exp['amount'], 2) ?></td>
+                </tr>
+            <?php endforeach; ?>
+        </tbody>
+        <tfoot>
+            <tr style="background-color: #343a40; color: #fff;">
+                <th colspan="3" style="text-align: right;">TOTAL GENERAL DE GASTOS:</th>
+                <th style="text-align: right;">$<?= number_format($totalExpenses, 2) ?></th>
+            </tr>
+            <?php if (!empty($expensesByCategory)): ?>
+            <tr>
+                <td colspan="4" style="text-align: left; background-color: #fff; border: none; padding-top: 10px; padding-bottom: 0px;">
+                    <strong style="font-size: 9pt;">Gastos por Categoría:</strong>
+                </td>
+            </tr>
+            <?php foreach ($expensesByCategory as $cat): ?>
+                <tr>
+                    <td colspan="3" style="text-align: right; border: none;"><?= htmlspecialchars($cat['category'] ?? 'Sin categoría') ?>:</td>
+                    <td class="text-end" style="border: none;">$<?= number_format($cat['total'], 2) ?></td>
+                </tr>
+            <?php endforeach; ?>
+            <?php endif; ?>
+        </tfoot>
+    </table>
+<?php endif; ?>