/* Estilos generales */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    padding: 20px;
    color: #333;
}

h2 {
    color: #007bff;
    text-align: center;
    margin: 20px 0 40px;
}

/* Contenedor del encabezado */
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.back-button {
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.back-button:hover {
    background-color: #0056b3;
}

/* Estilos para el formulario y botones */
form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

input[type="file"] {
    border: 2px dashed #007bff;
    padding: 20px;
    width: 80%;
    margin: 0 auto;
    border-radius: 10px;
    cursor: pointer;
    text-align: center;
    background-color: #e7f1ff;
    color: #007bff;
    outline: none;
}

input[type="submit"] {
    padding: 10px 50px;
    background-color: #28a745;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 18px;
}

input[type="submit"]:hover {
    background-color: #218838;
}

/* Botón de descarga */
.button {
    display: inline-block;
    margin-bottom: 20px;
    padding: 10px 15px;
    background-color: #17a2b8;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #138496;
}