*{
    margin: 0;
    padding: 0
}
body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #1c1c1e; /* fondo negro oscuro */
    color: #e0e0e0; /* texto claro */
    margin: 0;
    padding: 0;
}

header, main, footer {
    width: 90%;
    max-width: 1000px;
    margin: 20px auto;
}

header {
    background-color: #4b0082; /* morado intenso */
    color: white;
    text-align: center;
    padding: 20px;
    border-radius: 8px;
}

.menu a {
    float: left;
    color: #ffffff;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
    transition: background-color 0.3s ease;
}

.menu a:hover {
    background-color: #800080; /* morado más oscuro */
    color: white;
}

.menu {
    overflow: hidden;
    margin-bottom: 10px;
    border-bottom: 1px solid #999;
}

main {
    background-color: #e2d7ff;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

h1, h3 {
    color: #e2d7ff;
}

.contenedor1 {
    margin: 20px auto;
    width: 100%;
    max-width: 500px;
    text-align: center;
}

.btn-group {
    margin-top: 10px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

input.form-control {
    background-color: #fff;
    border: 1px solid #666;
    color: #fff;
}

input.form-control:disabled {
    background-color: #aaa;
    color: #aaa;
}

button.btn {
    background-color: #6a0dad; /* púrpura oscuro */
    color: white;
    border: none;
    transition: background-color 0.3s;
}

button.btn:hover {
    background-color: #4b0082;
}

footer {
    background-color: #121212;
    color: white;
    text-align: center;
    padding: 15px;
    width: 100%;
    border-top: 1px solid #333;
    margin-top: 40px;
    border-radius: 8px;
}