.fullscreen-promo {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 99999999999;
}

.promo-content {
    position: relative;
    background: #fff;
    padding: 30px 20px;
    max-width: 90%;
    border-radius: 10px;
    text-align: center;
    font-size: 20px;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.promo-close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 32px;
    border: none;
    background: transparent;
    color: #000;
    cursor: pointer;
    line-height: 1;
}

.promo-text {
    padding-top: 20px;
}

/* Только для мобильных устройств */
@media (min-width: 768px) {
    .fullscreen-promo {
        display: none !important;
    }
}
.promo-close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 32px;
    border: none;
    background: transparent;
    color: #000;
    cursor: not-allowed;
    line-height: 1;
    opacity: 0.5;
    transition: opacity 0.3s, cursor 0.3s;
}

.promo-close-btn.enabled {
    cursor: pointer;
    opacity: 1;
}

#promo-timer {
    font-size: 20px;
    color: #555;
}