.card {
    background: #f8f9fa;
    border-radius: 1rem;
    padding: 2rem;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

label {
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}

input[type="number"] {
    width: 100%;
    padding: 0.5rem;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.result p {
    margin: 0.5rem 0;
}

.highlight {
    font-weight: bold;
    font-size: 1.2rem;
    color: #2c3e50;
}