#stt-btn-01e31bca {
    position: fixed;
    bottom: 20px;
    z-index: 9999;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#stt-btn-01e31bca:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

#stt-btn-01e31bca.stt-btn-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Slide in animation class */
#stt-btn-01e31bca.stt-slide-hidden {
    transform: translateY(50px);
}
#stt-btn-01e31bca.stt-slide-visible {
    transform: translateY(0);
}