.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(2px); /* + Daha modern görünüm */
    z-index: 9999;
}

.popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 380px;
    background-color: #fff;
    border-radius: 12px;
    text-align: center;
    z-index: 10000;
    padding: 15px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    animation: popupFade 0.3s ease;
}

/* Popup animasyonu */
@keyframes popupFade {
    from { opacity: 0; transform: translate(-50%, -48%); }
    to   { opacity: 1; transform: translate(-50%, -50%); }
}

.popup img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    display: block;
    margin-bottom: 12px;
    user-select: none;
}

.popup button {
    margin-top: 8px;
    width: 100%;
    padding: 12px 0;
    background-color: #e60000;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    font-size: 15px;
    cursor: pointer;
    transition: 0.2s;
}

.popup button:hover {
    background-color: #c10000;
}