#chatbot-btn {
  position: fixed;   /* 🔥 THIS IS THE KEY */
  bottom: 20px;
  right: 20px;
  z-index: 999999;
  background: #0a4cff;
  color: #fff;
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

#chatbot-box {
  position: fixed;   /* 🔥 ALSO FIXED */
  bottom: 80px;
  right: 20px;
  width: 360px;
  height: 460px;
  background: #fff;
  display: none;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
  z-index: 999999;
}