/* 发送消息成功后触发 Toast 提示 */
.toast-message {
  position: fixed;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);

  background-color: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 12px 25px;
  border-radius: 50px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);

  font-size: 14px;
  font-weight: bold;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1000;

  opacity: 0;
  transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast-message.show {
  top: 30px;
  opacity: 1;
}

.toast-success {
  background: linear-gradient(135deg, #00b09b, #96c93d);
}

.toast-error {
  background: linear-gradient(135deg, #ff5f6d, #ffc371);
}