body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
  }
  
  .phone-call-button {
    position: fixed;
    bottom: 90px;
    right: 20px;
    z-index: 3;
  }
  
  .phone-call-button a {
    position: relative;
    display: inline-block;
  }
  
  .phone-call-button a img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s, box-shadow 0.3s;
  }
  
  .phone-call-button a img:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  }
  
  .phone-tooltip {
    visibility: hidden;
    background-color: #25d366;
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 5px 10px;
    position: absolute;
    bottom: 60px;
    right: 0;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.3s;
    white-space: nowrap;
  }
  
  .phone-call-button a:hover .phone-tooltip {
    visibility: visible;
    opacity: 1;
  }
  
  @media (max-width: 600px) {
    .phone-call-button a img {
      width: 50px;
      height: 50px;
    }
  }
  .disabled {
    opacity: 0.6;
    cursor: not-allowed;
  }