.my-size-popup {
    display: none;
    position: fixed !important;
    inset: 0;
    width: 100% !important;
    height: 100% !important;
    z-index: 9999999 !important;
    padding: 20px 10px;
    overflow-y: auto;
    background: transparent;
}

.my-size-popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1;
}

.my-size-popup-content {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 40px auto;
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    z-index: 2;
}

.my-size-popup-close {
    position: absolute;
    top: 10px;
    left: 10px;
    border: 0;
    background: transparent;
    font-size: 32px;
    cursor: pointer;
    line-height: 1;
    z-index: 3;
}

.my-size-popup-content .grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin: 20px 0;
}

.my-size-popup-content input,
.my-size-popup-content textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-sizing: border-box;
}

.my-size-popup-content textarea {
    min-height: 80px;
    resize: vertical;
}

.my-size-popup-content button.button.alt {
    width: 100%;
    margin-top: 15px;
    display: block;
}

@media (max-width: 768px) {
    .my-size-popup-content {
        padding: 18px;
        margin: 20px auto;
    }
    .my-size-popup-content .grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}