/* section-detail.css - 专用于section-detail.html页面 */

/* 基础内容容器样式 */
.course-content-list .course-content-container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto 2rem auto;
}

/* 图片容器样式 */
.course-content-list .course-content-container .image-container,
.course-content-list .course-content-container .course-content-youtube-container,
.course-content-list .course-content-container .course-content-external-video-container,
.course-content-list .course-content-container .course-content-text {
  width: 100%;
  margin-bottom: 1.5rem;
}

.course-content-image {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block; /* 消除图片底部的间隙 */
}

/* 视频容器样式 - 本地视频只需宽度100% */
.course-content-video-container {
  width: 100%;
  margin-bottom: 1.5rem;
}

.course-content-video {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
}

/* 文本内容样式 */
.course-content-text {
  width: 100%;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* 外部视频容器基础样式 */
.course-content-external-video-container {
  position: relative;
  width: 100%;
  background-color: transparent;
  border-radius: 4px;
  overflow: hidden;
}

/* 16:9 比例容器，仅用于iframe外链视频 */
.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9比例 */
  height: 0;
  overflow: hidden;
  background: #000;
}

.video-container iframe,
.video-container .video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100% !important;
  border: 0;
  display: block;
  min-width: 0 !important;
  min-height: 0 !important;
  max-width: 100% !important;
  max-height: 100% !important;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .course-content-container {
    max-width: 100%;
  }
}

@media (min-width: 993px) and (max-width: 1200px) {
  .course-content-container {
    max-width: 700px;
  }
}

@media (min-width: 1201px) {
  .course-content-container {
    max-width: 800px;
  }
}

@media (max-width: 768px) {
  .course-content-text {
    font-size: 16px;
  }
}