.tfl-wfb-button-wrap {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 99999;
}

.tfl-wfb-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 62px;
    height: 62px;
    border-radius: 999px;
    background: #25d366;
    color: #ffffff;
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    text-decoration: none;
}

.tfl-wfb-button:hover,
.tfl-wfb-button:focus {
    background: #1fb958;
    color: #ffffff;
    box-shadow: 0 16px 36px rgba(37, 211, 102, 0.45);
    transform: translateY(-2px);
}

.tfl-wfb-icon {
    display: inline-flex;
    width: 34px;
    height: 34px;
}

.tfl-wfb-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

@media (max-width: 767px) {
    .tfl-wfb-button-wrap {
        right: 16px;
        bottom: 16px;
    }

    .tfl-wfb-button {
        width: 58px;
        height: 58px;
    }

    .tfl-wfb-icon {
        width: 32px;
        height: 32px;
    }
}