.call-button {
      position: fixed;
      z-index: 100;
      bottom: 80px;
      right: 20px;
      width: 60px;
      height: 60px;
      background: linear-gradient(135deg, #28a745, #218838);
      border: none;
      border-radius: 50%;
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0;
      animation: bounce 1.5s infinite;
    }

    .call-button img {
      width: 28px;
      height: 28px;
    }

    @keyframes bounce {
      0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
      }
      40% {
        transform: translateY(-12px);
      }
      60% {
        transform: translateY(-6px);
      }
    }