/* Estilo inspirado na calculadora da Pontotel */
#calculadora {
    max-width: 600px;
    margin: 40px auto;
    padding: 30px;
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-family: 'Arial', sans-serif;
}

#calculadora h3 {
    font-size: 1.5em;
    margin-bottom: 20px;
    color: #333333;
}

#calculadora label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555555;
}

#calculadora input[type="text"],
#calculadora input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #cccccc;
    border-radius: 4px;
    box-sizing: border-box;
}

#calculadora input[type="submit"] {
    background-color: #0073aa;
    color: #ffffff;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease;
}

#calculadora input[type="submit"]:hover {
    background-color: #005177;
}

#calculadora .resultado {
    margin-top: 30px;
    padding: 20px;
    background-color: #f0f8ff;
    border-left: 5px solid #0073aa;
    color: #333333;
    font-size: 1.1em;
}