.hpb-button {
    position: fixed;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background-color: #25d366;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    cursor: pointer;
    gap: 2px;
    padding: 8px 10px;
}

.hpb-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
    color: #fff;
}

.hpb-button:active {
    transform: scale(0.95);
}

.hpb-button svg {
    display: block;
}

.hpb-label {
    display: block;
    font-size: 10px;
    line-height: 1.1;
    white-space: nowrap;
}

.hpb-small {
    padding: 6px 8px;
    border-radius: 12px;
}

.hpb-small svg {
    width: 18px;
    height: 18px;
}

.hpb-small .hpb-label {
    font-size: 8px;
}

.hpb-medium {
    padding: 8px 12px;
    border-radius: 16px;
}

.hpb-medium svg {
    width: 22px;
    height: 22px;
}

.hpb-medium .hpb-label {
    font-size: 10px;
}

.hpb-large {
    padding: 10px 14px;
    border-radius: 20px;
}

.hpb-large svg {
    width: 26px;
    height: 26px;
}

.hpb-large .hpb-label {
    font-size: 11px;
}

.hpb-bottom-left {
    bottom: 20px;
    left: 20px;
}

.hpb-bottom-right {
    bottom: 20px;
    right: 20px;
}

.hpb-top-left {
    top: 20px;
    left: 20px;
}

.hpb-top-right {
    top: 20px;
    right: 20px;
}