.card {
    border: 1px solid #dadfda;
    border-radius: 8px;
    padding: 1.5rem;
    background: #f1f5f1;
}

label {
    display: block;
    margin-top: 1rem;
    font-weight: bold;
}

input, select, button {
    border-radius: 5px;
    border: 1px solid #dadfda;
    width: 100%;
    padding: 0.7rem;
    margin-top: 0.4rem;
    box-sizing: border-box;
    font-size: 1rem;
}

button {
    margin-top: 1rem;
    cursor: pointer;
    background: #212623;
    color: #fff;
    border: none;
    border-radius: 4px;
}

.results {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
}

.result-value {
    font-weight: bold;
    color: #005a9c;
}

.error {
    color: #b00020;
    margin-top: 0.5rem;
}