.hidden {
    display: none;
}

.close-btn {
    cursor: pointer;
}

.popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.popup-content {
    background: #fff;
    padding: 66px 55px;
    border-radius: 10px;
    text-align: center;
    max-width: 90%;
    font-size: 18px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    position: relative;
}

.popup button {
    margin-top: 15px;
    background-color: #28a745;
    color: white;
    border: none;
    padding: 10px 18px;
    font-size: 16px;
    border-radius: 6px;
    cursor: pointer;
    width: 80%;
}

.popup .close-btn {
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}

.hidden {
    display: none;
}

@media screen and (max-width:991px) {
    .popup-content {
        padding: 44px 25px;
        max-width: 70%;
    }

    .popup button {
        width: 96%;
    }
}