.sb-sticky {
    position: fixed;
    top: 40%;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.sb-right { right: 10px; }
.sb-left { left: 10px; }

.sb-btn {
    display: flex;
    align-items: center;
    background: #d5eaff;
    padding: 10px;
    border-radius: 50%;
    text-decoration: none;
    position: relative;
    transition: 0.3s;
}
.sb-btn:hover { background: #d5eaff; }

.sb-icon {
    width: 30px;
    height: 30px;
}
.sb-tooltip {
    visibility: hidden;
    opacity: 0;
    background: #333;
    color: #fff;
    padding: 5px 8px;
    border-radius: 4px;
    position: absolute;
    left: 110%;
    white-space: nowrap;
    transition: 0.3s;
}
.sb-btn:hover .sb-tooltip {
    visibility: visible;
    opacity: 1;
}