html {
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

body {
    text-align: center;
    background-color: #f4f1e6;
}

.contenedor {
    background-color: white;
    width: 420px;
    margin: 40px auto;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.15);
}

h2 {
    color: darkkhaki;
}

p {
    font-weight: bold;
    font-style: italic;
}

input {
    width: 180px;
    height: 30px;
    border-radius: 6px;
    border: 1px solid #888;
    text-align: center;
}

button {
    width: 180px;
    height: 50px;
    background-color: darkkhaki;
    border-radius: 6px;
    border: none;
    font-weight: bold;
}

button:hover {
    background-color: olive;
    cursor: pointer;
}

input:disabled {
    background-color: #eee;
    cursor: not-allowed;
}

#cuentaRegresiva {
    border: 2px solid red;
    color: red;
    padding: 4px 10px;
    font-size: 22px;
    margin-left: 8px;
}

#resultado {
    margin-top: 20px;
    font-size: 20px;
    font-weight: bold;
}