@media (max-width: 768px) {
  .container {
    flex-direction: column;
    padding: 10px;
  }

  .chat-container {
    flex: none;
    height: calc(100vh - 300px);
  }

  .upload-container {
    flex: none;
    height: 250px;
  }

  .message {
    max-width: 90%;
  }

  .file-preview img {
    max-width: 150px;
    max-height: 150px;
  }

  .upload-area {
    padding: 15px;
  }

  .upload-icon {
    font-size: 30px;
  }

  .upload-text {
    font-size: 14px;
  }

  .upload-item {
    padding: 10px;
  }

  .status-message {
    width: 90%;
    max-width: none;
  }
}

/* 移动端手势操作 */
.message {
  touch-action: pan-x;
  user-select: none;
}

.message-swipe-actions {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  display: flex;
  transform: translateX(100%);
  transition: transform 0.3s;
}

.message-swipe-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  background: var(--error-color);
  color: white;
  font-size: 14px;
}

.message.swiped .message-swipe-actions {
  transform: translateX(0);
}