.calculator-popup-overlay {
    position: fixed;
    top:0; left:0; right:0; bottom:0;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calculator-popup-container {
    position: relative;
    max-width: 90%;
}

.calculator-popup-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
}

.calculator-page { display: block; }