.alan-hesaplama-pro-container {
    max-width: 500px;
    padding: 25px;
    border: 1px solid #ddd;
    border-radius: 10px;
    background: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    font-family: Arial, sans-serif;
}

.alan-hesaplama-pro-container input,
.alan-hesaplama-pro-container select {
    width: 100%;
    padding: 10px;
    margin: 8px 0 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.alan-hesaplama-pro-container button {
    padding: 10px 20px;
    margin-right: 10px;
    background: #0073aa;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#alanSonucuPro {
    margin-top: 20px;
    font-size: 16px;
    font-weight: bold;
}