#floating-chat-bubble {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    pointer-events: none;
    overflow: hidden;
    z-index: 9999;
}

.bubble-bottom {
    --size: 100px;
    position: absolute;
    width: var(--size);
    height: calc(var(--size) * 0.66);
    background: var(--bubble-bg, #333);
    border-radius: 10px;
    color: var(--bubble-text, #fff);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: calc(var(--size) * 0.25);
    font-weight: bold;
    text-align: center;
    bottom: 0;
}

.bubble-bottom:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 0;
    border: calc(var(--size) * 0.13) solid transparent;
    border-top-color: var(--bubble-bg, #333);
    border-bottom: 0;
    margin-left: calc(var(--size) * -0.13);
    margin-bottom: calc(var(--size) * -0.13);
}

@keyframes floatUp {
    from { transform: translateY(0); }
    to { transform: translateY(-100vh); }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}