.cpp-popup-overlay {
    position: fixed;
    display: none;
    z-index: 10000;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    align-items: center;
    justify-content: center;
}

.cpp-popup-overlay.cpp-visible {
    display: flex;
}

.cpp-popup-window {
    background: white;
    padding: 20px;
    border-radius: 8px;
    max-width: 600px;
    width: fit-content;
    position: relative;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

.cpp-close {
    position: absolute;
    top: 10px; right: 15px;
    cursor: pointer;
    font-size: 24px;
    font-weight: bold;
    color: #333;
}