/* ============================================ */
/* 自定义课程组件样式 */
/* ============================================ */

/* -------------------------- */
/* 基础重置 */
/* -------------------------- */

.custom-course-container {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* -------------------------- */
/* 网页端样式 (桌面端) */
/* -------------------------- */

@media screen and (min-width: 769px) {
  .custom-course-container {
    width: 100%;
    min-height: 100vh;
    background-color: #f5f5f5;
    padding: 20px;
  }

  /* 视频播放区域 - 网页端隐藏 */
  .custom-course-video-container {
    display: none !important;
  }

  /* 课程详情页 - 网页端头部 */
  .custom-course-detail-header {
    background: linear-gradient(135deg, #44449c, #7F70C8);
    padding: 30px;
    color: white;
    display: flex;
    align-items: center;
    gap: 24px;
    border-radius: 12px;
    margin-bottom: 16px;
  }

  .custom-course-detail-cover {
    width: 180px;
    height: 120px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  }

  .custom-course-detail-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .custom-course-detail-info {
    flex: 1;
  }

  .custom-course-detail-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .custom-course-detail-subtitle {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 16px;
  }

  .custom-course-detail-progress {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .custom-course-detail-progress-bar {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    overflow: hidden;
  }

  .custom-course-detail-progress-fill {
    height: 100%;
    background: white;
    border-radius: 4px;
  }

  .custom-course-detail-progress-text {
    font-size: 14px;
    font-weight: 600;
  }

  .custom-course-detail-toolbar {
    display: flex;
    gap: 16px;
    padding: 16px 20px;
    background: white;
    border-radius: 12px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  }

  .custom-course-search-box {
    flex: 1;
    position: relative;
  }

  .custom-course-search-box input {
    width: 100%;
    padding: 10px 40px;
    border: 1px solid #ddd;
    border-radius: 20px;
    font-size: 14px;
  }

  .custom-course-search-box .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
  }

  .custom-course-sort-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #f5f5f5;
    border-radius: 20px;
    cursor: pointer;
    border: none;
    font-size: 14px;
  }

  .custom-course-chapter-list {
    max-width: 100%;
    margin: 0;
  }

  .custom-course-chapter-item {
    display: flex;
    align-items: flex-start;
    padding: 20px;
    background: white;
    border-radius: 12px;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    cursor: pointer;
    transition: box-shadow 0.2s ease;
  }

  .custom-course-chapter-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  }

  .custom-course-chapter-lock {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ddd;
    font-size: 20px;
    flex-shrink: 0;
  }

  .custom-course-chapter-lock.locked {
    color: #999;
  }

  .custom-course-chapter-lock.unlocked {
    color: #4CAF50;
  }

  .custom-course-chapter-info {
    flex: 1;
    padding-left: 16px;
  }

  .custom-course-chapter-title {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
  }

  .custom-course-chapter-desc {
    font-size: 13px;
    color: #999;
    margin-bottom: 8px;
    line-height: 1.5;
  }

  .custom-course-chapter-meta {
    font-size: 13px;
    color: #999;
    display: flex;
    gap: 12px;
  }

  .custom-course-chapter-duration {
    display: flex;
    align-items: center;
    gap: 4px;
  }
}

/* -------------------------- */
/* 手机端样式 */
/* -------------------------- */

@media screen and (max-width: 768px) {
  .custom-course-container {
    width: 100%;
    min-height: 100vh;
    background: #ffffff;
    padding: 0;
    margin: 0;
  }

  /* 视频播放区域 - 手机端显示 */
  .custom-course-video-container {
    display: block !important;
    width: 100%;
    background: #000;
    position: relative;
  }

  /* 视频头部工具栏 */
  .custom-course-video-header {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: rgba(0, 0, 0, 0.8);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
  }

  .custom-course-back-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 18px;
  }

  .custom-course-video-title {
    flex: 1;
    text-align: center;
    color: white;
    font-size: 14px;
    font-weight: 500;
    padding: 0 40px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .custom-course-video-controls {
    display: flex;
    gap: 8px;
  }

  .custom-course-control-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 18px;
  }

  /* 视频播放区域 */
  .custom-course-video-wrapper {
    width: 100%;
    height: 220px;
    position: relative;
  }

  .custom-course-video-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #44449c, #7F70C8);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
  }

  .custom-course-play-icon {
    width: 60px;
    height: 60px;
    color: white;
    opacity: 0.9;
  }

  /* 课程详情页头部 - 手机端隐藏 */
  .custom-course-detail-header {
    display: none !important;
  }

  /* 工具栏 */
  .custom-course-detail-toolbar {
    display: flex;
    flex-direction: column;
    padding: 12px;
    gap: 12px;
    border-bottom: 1px solid #eee;
    background: white;
  }

  .custom-course-search-box {
    position: relative;
  }

  .custom-course-search-box input {
    width: 100%;
    padding: 12px 40px;
    border: 1px solid #ddd;
    border-radius: 25px;
    font-size: 14px;
    box-sizing: border-box;
  }

  .custom-course-search-box .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
  }

  .custom-course-sort-btn {
    padding: 12px;
    border-radius: 25px;
    justify-content: center;
    background: #f5f5f5;
    border: none;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* 章节列表 */
  .custom-course-chapter-list {
    margin: 0;
    padding: 12px;
    background: #f8f8f8;
  }

  .custom-course-chapter-item {
    display: flex;
    align-items: flex-start;
    padding: 16px;
    background: white;
    border-radius: 16px;
    margin-bottom: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    cursor: pointer;
  }

  .custom-course-chapter-lock {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
  }

  .custom-course-chapter-lock.locked {
    color: #ccc;
  }

  .custom-course-chapter-lock.unlocked {
    color: #4CAF50;
  }

  .custom-course-chapter-info {
    flex: 1;
    padding-left: 12px;
  }

  .custom-course-chapter-title {
    font-size: 15px;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .custom-course-chapter-desc {
    font-size: 12px;
    color: #999;
    margin-bottom: 6px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .custom-course-chapter-meta {
    font-size: 12px;
    color: #999;
    gap: 10px;
    display: flex;
    align-items: center;
  }

  .custom-course-chapter-duration {
    display: flex;
    align-items: center;
    gap: 4px;
  }
}

/* -------------------------- */
/* 空状态样式 */
/* -------------------------- */

.custom-course-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
}

.custom-course-empty-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 40px;
  color: #ccc;
}

.custom-course-empty-text {
  font-size: 16px;
  color: #999;
  margin-bottom: 20px;
}