/* 页面整体样式 */
page {
  background-color: #222238;
  border-top: 1px solid hsla(0,31%,87%,.5);
  font-size: 32rpx;
  line-height: 1.6;
}
/* 页面整体样式 */
.course-detail-container {
  padding: 20rpx;
  background-color: #1a1d3b;
  color: #fff;
}

/* 课程介绍 */
.course-intro {
  margin-bottom: 40rpx;
}

.intro-title {
  font-size: 36rpx;
  font-weight: bold;
  color: #ffcc00;
  margin-bottom: 20rpx;
  text-align: center;
  margin: 0 auto;
}

.intro-description {
  font-size: 28rpx;
  line-height: 1.6;
  color: #ccc;
}

/* 两张图片并排展示 */
/* 整体背景 */
.file-browser {
  padding: 20rpx;
  background-color: #1a1d3b;
  color: #fff;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 头部：返回按钮和路径 */
.header {
  display: flex;
  align-items: center;
  margin-bottom: 20rpx;
  background-color: #2a2e50;
  padding: 10rpx;
  border-radius: 10rpx;
  box-shadow: 0 2rpx 4rpx rgba(0, 0, 0, 0.2);
}

.back-icon {
  width: 40rpx;
  height: 40rpx;
  margin-right: 10rpx;
}

.breadcrumb-path {
  font-size: 28rpx;
  color: #ccc;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

/* 文件和目录列表 */
.file-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20rpx;
  overflow-y: scroll;
}

.file-list-root {
  height: auto; /* 根目录时内容高度自适应 */
}

.file-card {
  display: flex;
  align-items: center;
  padding: 20rpx;
  background-color: #2a2e50;
  border-radius: 10rpx;
  border-bottom: 1px solid #fff;
  box-shadow: 0 4rpx 8rpx rgba(0, 0, 0, 0.2);
  
}

.file-icon {
  width: 60rpx;
  height: 60rpx;
  margin-right: 20rpx;
}

.file-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10rpx;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis; /* 长文字处理 */
  max-width: 80%; /* 确保图标不被挤掉 */
}

.file-name {
  font-size: 28rpx;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis; /* 长文字处理 */
  max-width: 80%; /* 确保图标不被挤掉 */
}

.file-updated {
  font-size: 24rpx;
  color: #aaa;
}

.load-more {
  text-align: center;
  color: #aaa;
  padding: 20rpx 0;
  font-size: 13px;
}


/* 功能按钮两行布局 */
.action-buttons {
  display: flex;
  flex-direction: column;
  margin-bottom: 40rpx;
}

.button-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20rpx;
}

.action-btn {
  width: 48%;
  font-size: 28rpx;
  padding: 20rpx 0;
  color: #fff;
  text-align: center;
  border-radius: 10rpx;
}

.green-btn { background-color: #28a745; }
.purple-btn { background-color: #6f42c1; }
.orange-btn { background-color: #fd7e14; }
.yellow-btn { background-color: #ffc107; }

/* 弹窗样式 */
.qrcode-popup-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 999;
  display: flex;
  justify-content: center;
  align-items: center;
}

.qrcode-popup {
  background: rgba(255, 255, 255, 0.9);
  padding: 40rpx;
  border-radius: 20rpx;
  text-align: center;
  position: relative;
  animation: fadeIn 0.3s ease-in-out;
}

.close-icon {
  position: absolute;
  top: 20rpx;
  right: 20rpx;
  font-size: 36rpx;
  color: #666;
}

.qrcode-text {
  font-size: 28rpx;
  color: #333;
  margin-bottom: 20rpx;
}

.qrcode-text text {
  display: block;
}

.qrcode-img {
  width: 500rpx;
  height: 500rpx;
  margin: 20rpx auto;
  border-radius: 10rpx;
}