html, body {
    width: 100vw;
    max-width: 100vw;
    overflow-x: hidden;
}

#whatsapp-float {
    position: fixed;
    right: 0;
    bottom: 18px;
    z-index: 9999;
    background: #25d366;
    color: #fff;
    font-size: 38px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s, width 0.3s, height 0.3s, font-size 0.3s;
    text-decoration: none;
    overflow: hidden;
}

#whatsapp-float:hover {
    background: #6fe7b7;
    color: #fff;
}

/* Responsive para móviles y tabletas */
@media (max-width: 767px) {
  #whatsapp-float {
    right: 0;
    bottom: 12px;
    width: 48px;
    height: 48px;
    font-size: 28px;
  }
}
@media (max-width: 480px) {
  #whatsapp-float {
    right: 0;
    bottom: 8px;
    width: 40px;
    height: 40px;
    font-size: 22px;
  }
}