button:disabled {
    background-color: #aaa;
    color: #666;
    cursor: not-allowed;
    opacity: 0.6;
}


select {
    width: 100%;

    padding: 14px;

    font-size: 16px;

    border: 1px solid #ccc;
    border-radius: 8px;

    background-color: white;

    outline: none;
}

select:focus {
    border-color: #007bff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 20px;

    font-family: Arial, sans-serif;

    background-color: #f2f2f2;
}

.contenedor {
    width: 100%;
    max-width: 450px;

    margin: 40px auto;
    padding: 25px;

    background-color: white;

    border-radius: 12px;

    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

h1 {
    margin-top: 0;
    margin-bottom: 25px;

    text-align: center;
}

form {
    display: flex;
    flex-direction: column;

    gap: 15px;
}

input {
    width: 96%;

    padding: 14px;

    font-size: 16px;

    border: 1px solid #ccc;
    border-radius: 8px;

    outline: none;
}

input:focus {
    border-color: #007bff;
}

button {
    width: 96%;

    padding: 14px;

    margin-top: 5px;

    font-size: 16px;
    font-weight: bold;

    color: white;

    background-color: #007bff;

    border: none;
    border-radius: 8px;

    cursor: pointer;
}

button:active {
    transform: scale(0.98);
}