#wa-button {
    position: fixed;
    bottom: 70px;
    right: 18px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.6);
    cursor: pointer;
    background-image: url('/assets/img/whatsapp-logo-white.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 60%;
    z-index: 9999;
    animation: pulse 2.5s infinite;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
  }

  #wa-button:hover,
  #wa-button:focus {
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.9);
    transform: scale(1.1);
    outline: none;
  }

  /* Pulse animation */
  @keyframes pulse {
    0% {
      box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
      box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
      box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
  }

  /* Tooltip popup */
  #wa-tooltip {
    position: fixed;
    bottom: 130px;
    right: 20px;
    background-color: #1E1F19;
    color: #fff;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 14px;
    max-width: 220px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 9998;
  }

  #wa-tooltip.visible {
    opacity: 1;
    pointer-events: auto;
  }

  /* Tooltip arrow */
  #wa-tooltip::after {
    content: "";
    position: absolute;
    bottom: -8px;
    right: 15px;
    border-width: 8px 8px 0 8px;
    border-style: solid;
    border-color: #1E1F19 transparent transparent transparent;
  }