.public-course-list {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
}

.course-list-header {
  padding: 16px 20px;
  border-bottom: 1px solid #e5e6eb;
  background: #fafafa;
}

.course-list-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: #1d2129;
}

.course-list-collapse {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.course-list-collapse .arco-collapse-item {
  margin-bottom: 8px;
  border: 1px solid #e5e6eb;
  border-radius: 4px;
  overflow: hidden;
}

.course-list-collapse .arco-collapse-item-header {
  background: #f7f8fa;
  padding: 12px 16px;
}

.unit-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.unit-name {
  font-size: 14px;
  font-weight: 500;
  color: #1d2129;
}

.unit-course-count {
  font-size: 12px;
  color: #86909c;
  margin-right: 20px;
}

.course-timeline {
  padding: 16px 0;
}

.timeline-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e5e6eb;
}

.timeline-dot.completed {
  background: #00b42a;
}

.timeline-dot.current {
  background: #ff7d00;
  box-shadow: 0 0 0 4px rgba(255, 125, 0, 0.2);
}

.timeline-dot.upcoming {
  background: #165dff;
}

.course-item {
  padding: 12px;
  background: #f7f8fa;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.course-item:hover {
  background: #e8f3ff;
  transform: translateX(4px);
}

.course-item.selected {
  background: #e8f3ff;
  border-left: 3px solid #165dff;
}

.course-item.completed {
  opacity: 0.7;
}

.course-info {
  flex: 1;
}

.course-name {
  font-size: 14px;
  font-weight: 500;
  color: #1d2129;
  margin-bottom: 4px;
}

.course-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: #86909c;
}

.course-status {
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
  white-space: nowrap;
}

.course-status.completed {
  background: #e8ffea;
  color: #00b42a;
}

.course-status.current {
  background: #fff7e8;
  color: #ff7d00;
}

.course-status.upcoming {
  background: #e8f3ff;
  color: #165dff;
}

/* 自定义滚动条 */
.course-list-collapse::-webkit-scrollbar {
  width: 6px;
}

.course-list-collapse::-webkit-scrollbar-track {
  background: #f2f3f5;
  border-radius: 3px;
}

.course-list-collapse::-webkit-scrollbar-thumb {
  background: #c9cdd4;
  border-radius: 3px;
}

.course-list-collapse::-webkit-scrollbar-thumb:hover {
  background: #86909c;
}