/* pages/course-detail/course-detail.wxss */
.container {
  padding-bottom: 150rpx;
}

/* 课程头部 */
.course-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 60rpx 30rpx 40rpx;
  color: #ffffff;
}

.course-name {
  font-size: 40rpx;
  font-weight: bold;
  margin-bottom: 20rpx;
}

.course-meta {
  display: flex;
  gap: 15rpx;
}

.meta-tag {
  padding: 8rpx 20rpx;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 20rpx;
  font-size: 24rpx;
}

/* 信息卡片 */
.info-card {
  background-color: #ffffff;
  margin: 20rpx 30rpx;
  border-radius: 16rpx;
  padding: 30rpx;
  box-shadow: 0 4rpx 20rpx rgba(0, 0, 0, 0.08);
}

.info-row {
  display: flex;
  align-items: center;
  padding: 20rpx 0;
  border-bottom: 1rpx solid #F5F5F5;
}

.info-row:last-child {
  border-bottom: none;
}

.info-icon {
  font-size: 36rpx;
  margin-right: 20rpx;
}

.info-content {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.info-label {
  font-size: 28rpx;
  color: #999999;
}

.info-value {
  font-size: 28rpx;
  color: #333333;
  font-weight: 500;
}

/* 标签栏 */
.tab-bar {
  display: flex;
  background-color: #ffffff;
  margin: 0 30rpx;
  border-radius: 12rpx;
  overflow: hidden;
}

.tab-item {
  flex: 1;
  text-align: center;
  padding: 25rpx 0;
  font-size: 28rpx;
  color: #666666;
  transition: all 0.3s;
}

.tab-item.active {
  color: #4A90E2;
  font-weight: bold;
  background-color: #E8F4FF;
}

/* 内容区域 */
.content-area {
  margin: 20rpx 30rpx;
}

.tab-content {
  background-color: #ffffff;
  border-radius: 16rpx;
  padding: 30rpx;
}

.section {
  margin-bottom: 30rpx;
}

.section:last-child {
  margin-bottom: 0;
}

.section-title {
  font-size: 32rpx;
  font-weight: bold;
  color: #333333;
  margin-bottom: 20rpx;
  padding-left: 20rpx;
  border-left: 6rpx solid #4A90E2;
}

.section-content {
  font-size: 28rpx;
  color: #666666;
  line-height: 1.8;
  text-align: justify;
}

/* 教学大纲 */
.syllabus-list {
  padding-left: 10rpx;
}

.syllabus-item {
  display: flex;
  align-items: center;
  padding: 20rpx;
  margin-bottom: 15rpx;
  background-color: #F8F9FA;
  border-radius: 12rpx;
}

.syllabus-number {
  width: 50rpx;
  height: 50rpx;
  line-height: 50rpx;
  text-align: center;
  background-color: #4A90E2;
  color: #ffffff;
  border-radius: 25rpx;
  font-size: 24rpx;
  margin-right: 20rpx;
}

.syllabus-text {
  flex: 1;
  font-size: 28rpx;
  color: #333333;
}

/* 空状态 */
.empty-tip {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 80rpx 0;
}

.empty-icon {
  font-size: 100rpx;
  margin-bottom: 20rpx;
}

.empty-text {
  font-size: 26rpx;
  color: #999999;
}

/* 底部操作栏 */
.action-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  gap: 20rpx;
  padding: 20rpx 30rpx;
  padding-bottom: calc(20rpx + env(safe-area-inset-bottom));
  background-color: #ffffff;
  box-shadow: 0 -4rpx 20rpx rgba(0, 0, 0, 0.08);
}

.action-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 90rpx;
  border-radius: 45rpx;
  font-size: 28rpx;
  gap: 10rpx;
}

.favorite-btn {
  background-color: #FFE8E8;
  color: #FF6B6B;
}

.share-btn {
  background-color: #E8F4FF;
  color: #4A90E2;
}

.btn-icon {
  font-size: 32rpx;
}