/* 拖放导入视觉反馈样式 */
.drag-over {
  position: relative;
}

.drag-over::before {
  content: '拖放电子书文件到此处导入';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 120, 255, 0.9);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: bold;
  z-index: 99999;
  pointer-events: none;
  backdrop-filter: blur(5px);
}

.drag-over::after {
  content: '支持: TXT, EPUB, MOBI, PDF, AZW, AZW3';
  position: fixed;
  top: 55%;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.8);
  font-size: 18px;
  z-index: 99999;
  pointer-events: none;
}