<!DOCTYPE html>
<html lang="es">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>QR Code</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background-color: #f0f2f5;
        }

        .container {
            text-align: center;
            padding: 2rem;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            max-width: 400px;
        }

        h1 {
            color: #666;
            font-size: 1rem;
            margin-bottom: 1.2rem;
        }

        .login-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .input-field {
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
        }

        .submit-btn {
            padding: 0.8rem;
            background-color: #1a73e8;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
        }

        .submit-btn:hover {
            background-color: #1557b0;
        }

        .error-message {
            color: #dc3545;
            font-size: 0.9rem;
            margin-top: 0.5rem;
            display: none;
        }

        .hidden {
            display: none;
        }
    </style>
</head>

<body>
    <div class="container">
        <div id="loginSection">
            <h1>Ingrese la contraseña para acceder al código QR</h1>
            <form class="login-form" id="loginForm">
                <input type="password" class="input-field" id="password" placeholder="Contraseña" required>
                <button type="submit" class="submit-btn">Acceder</button>
                <div class="error-message" id="errorMessage">Contraseña incorrecta</div>
            </form>
        </div>

        <div id="qrSection" class="hidden">
            <h1>Vincula tu cuenta de WhatsApp Business mediante el siguiente código QR</h1>
            <img class="qr" src="./qr.png" alt="QR Code">
        </div>
    </div>
</body>

<script>
    const loginSection = document.getElementById('loginSection');
    const qrSection = document.getElementById('qrSection');
    const loginForm = document.getElementById('loginForm');
    const errorMessage = document.getElementById('errorMessage');
    const qr = document.querySelector('.qr');

    // Contraseña correcta (cámbiala por la que desees)
    const CORRECT_PASSWORD = 'n0d4al_$_p4l_bu3n4B';

    loginForm.addEventListener('submit', function (e) {
        e.preventDefault();
        const password = document.getElementById('password').value;

        if (password === CORRECT_PASSWORD) {
            loginSection.classList.add('hidden');
            qrSection.classList.remove('hidden');
            startQRRefresh();
        } else {
            errorMessage.style.display = 'block';
            document.getElementById('password').value = '';
        }
    });

    function startQRRefresh() {
        let counter = 0;
        setInterval(() => {
            counter++;
            qr.src = `./qr.png?time=${counter}`;
        }, 1000);
    }
</script>

</html>