body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
}

.container {
    max-width: 500px;
    margin: 50px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.logo {
    display: block;
    margin: 0 auto 20px auto;
    width: 70%;
    height: auto;
}

h2 {
    text-align: center;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"] {
    width: 98%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    margin: 20px auto;
    animation: spin 1s linear infinite;
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.boletos {
    margin-top: 20px;
}

.boleto {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #f9f9f9;
}

.boleto a {
    color: #007bff;
    text-decoration: none;
}

.boleto-table {
    width: 100%;
    border-collapse: collapse;
}

.boleto-table th, .boleto-table td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: center;
}

.boleto-table th {
    background-color: #f4f4f4;
}

.error-message {
    color: red;
    margin-top: -10px;
    margin-bottom: 20px;
}