body {
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    padding: 20px;
}

.calculator-container {
    max-width: 420px;
    margin: auto;
    background: #ffffff;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #dcdcdc;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

h2 {
    margin-top: 0;
    color: #333;
    font-weight: 600;
}

label {
    display: block;
    margin-top: 12px;
    color: #444;
}

input {
    width: 100%;
    padding: 8px;
    margin-top: 4px;
    border: 1px solid #A9A9A9;
    border-radius: 6px;
}

button {
    margin-top: 16px;
    width: 100%;
    padding: 10px;
    background: #A9A9A9;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
}

button:hover {
    background: #8f8f8f;
}

.result {
    margin-top: 16px;
    font-weight: bold;
    font-size: 18px;
    color: #333;
}

.disclaimer {
    margin-top: 8px;
    font-size: 12px;
    color: #777;
}