.roi-cb {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 99999;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    border-radius: 16px 16px 0 0;
    padding: 18px 20px;
    text-decoration: none;
    display: block;
    cursor: pointer;
    transform: translateY(100%);
    transition: transform 0.4s ease, background 0.3s ease;
}

.roi-cb.visible {
    transform: translateY(0);
}

.roi-cb-title {
    font-size: 22px;
    font-weight: 600;
    display: block;
    text-align: center;
}

.roi-cb-subtitle {
    font-size: 18px;
    display: block;
    margin-top: 5px;
    text-align: center;
}

.roi-cb-close {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 24px;
    opacity: 0.7;
    padding: 0 5px;
    cursor: pointer;
    z-index: 1;
    transition: opacity 0.2s ease;
}

.roi-cb-close:hover {
    opacity: 1;
}