#calculatorModal {
    display: none !important;
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: 1000 !important;
    background: white !important;
    padding: 15px !important;
    border-radius: 8px !important;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2) !important;
    width: 300px !important;
    font-family: Arial, sans-serif !important;
}

#calculatorModal.active {
    display: block !important;
}

#overlay {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: rgba(0, 0, 0, 0.5) !important;
    z-index: 999 !important;
    display: none !important;
}

#overlay.active {
    display: block !important;
}

#closeModalBtn {
    float: right !important;
    font-size: 20px !important;
    cursor: pointer !important;
    color: #555 !important;
}

#closeModalBtn:hover {
    color: #000 !important;
}

#calculatorModal input {
    width: 100% !important;
    padding: 10px !important;
    margin-bottom: 10px !important;
    border: 1px solid #ddd !important;
    border-radius: 5px !important;
}

#calculatorModal button {
    width: 100% !important;
    padding: 10px !important;
    background-color: #4CAF50 !important;
    color: white !important;
    border: none !important;
    border-radius: 5px !important;
    cursor: pointer !important;
}

#calculatorModal button:hover {
    background-color: #45a049 !important;
}

#result {
    margin-top: 10px !important;
    font-size: 16px !important;
}