.pwa-popup {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: #fff;
    border: 2px solid #ccc;
    box-shadow: 0 0 10px rgba(0,0,0,0.2);
    padding: 15px;
    z-index: 10000;
    border-radius: 10px;
    max-width: 300px;
    font-family: Arial, sans-serif;
}
.pwa-popup-content button {
    margin-top: 10px;
    margin-right: 5px;
    padding: 8px 12px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}
#pwa-install-btn { background-color: #28a745; color: white; }
#pwa-close-btn { background-color: #dc3545; color: white; }