<?php if (!isset($_SESSION)) session_start(); ?>
<!DOCTYPE html>
<html lang="pt-br">
<head>
    <meta charset="UTF-8">
    <title>Sistema XML SEFAZ</title>
    <script src="https://cdn.tailwindcss.com"></script>
</head>
<body class="bg-gray-100">
<nav class="bg-blue-600 p-4 text-white flex justify-between">
    <span class="font-bold">📄 XML SEFAZ</span>
    <a href="logout.php" class="hover:underline">Sair</a>
</nav>
<div class="p-6">
