/* ============================================================
   鄂荟微讲堂 — 视频播放器样式
   ============================================================ */

/* ---- 课程模块列表 ---- */
.module-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.module-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: 28px 32px;
  cursor: pointer;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.module-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-card-hover);
}

.module-card__title {
  font-family: var(--ff-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary-alt);
  margin-bottom: 6px;
}

.module-card__count {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.module-card__desc {
  font-size: 14px;
  color: var(--color-text-tertiary);
  line-height: 1.5;
}

.module-card__arrow {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--color-accent);
}

/* ---- 视频播放页 ---- */
.video-page {
  padding: calc(var(--nav-height) + 24px) 24px 60px;
  max-width: 1100px;
  margin: 0 auto;
}

.video-backbar {
  margin-bottom: 16px;
}

.video-player-wrap {
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
}

.video-player-wrap video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.video-info {
  margin-top: 24px;
}

.video-info__title {
  font-family: var(--ff-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-primary-alt);
  margin-bottom: 4px;
}

.video-info__module {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

/* ---- 互动按钮 ---- */
.video-actions {
  display: flex;
  gap: 12px;
  margin: 12px 0 24px;
}

.video-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 9999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  transition: all 0.2s ease;
  cursor: pointer;
}

.video-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.video-btn--active {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.video-btn svg {
  width: 16px;
  height: 16px;
}

/* ---- 留言区 ---- */
.comment-section {
  margin-top: 32px;
  border-top: 1px solid var(--color-border-light);
  padding-top: 24px;
}

.comment-section__title {
  font-family: var(--ff-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary-alt);
  margin-bottom: 16px;
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
  max-height: 400px;
  overflow-y: auto;
}

.comment-item {
  padding: 12px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
}

.comment-item__text {
  font-size: 14px;
  color: var(--color-text-primary);
  line-height: 1.5;
  margin-bottom: 4px;
}

.comment-item__meta {
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.comment-input-wrap {
  display: flex;
  gap: 8px;
}

.comment-input {
  flex: 1;
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--ff-body);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  outline: none;
  background: var(--color-surface);
  color: var(--color-text-primary);
}

.comment-input:focus {
  border-color: var(--color-accent);
}

.comment-submit {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-accent);
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.comment-submit:hover {
  background: var(--color-accent-hover);
}

/* ---- 侧边视频列表 ---- */
.video-sidebar {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 24px;
}

.video-sidebar__title {
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  margin-bottom: 8px;
  padding-left: 4px;
}

.video-sidebar__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease;
  text-decoration: none;
  color: var(--color-text-primary);
}

.video-sidebar__item:hover {
  background: var(--color-accent-soft);
}

.video-sidebar__item--active {
  background: var(--color-accent-soft);
  border-left: 3px solid var(--color-accent);
}

.video-sidebar__num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-family: var(--ff-mono);
  background: var(--color-footer-bg);
  flex-shrink: 0;
}

.video-sidebar__item--active .video-sidebar__num {
  background: var(--color-accent);
  color: #fff;
}

.video-sidebar__name {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
}

.video-sidebar__duration {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-left: auto;
  white-space: nowrap;
}

/* ---- 视频页双栏 ---- */
.video-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}

@media (max-width: 900px) {
  .video-layout {
    grid-template-columns: 1fr;
  }

  .video-page {
    padding: calc(var(--nav-height) + 16px) 12px 40px;
  }

  .video-info__title {
    font-size: 18px;
  }

  .video-btn {
    padding: 6px 14px;
    font-size: 12px;
  }

  .video-sidebar {
    order: -1;
  }

  .video-sidebar__title {
    display: none;
  }

  .video-sidebar {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
  }

  .video-sidebar__item {
    white-space: nowrap;
    padding: 8px 14px;
    border-radius: 9999px;
    border: 1px solid var(--color-border);
    flex-shrink: 0;
  }

  .video-sidebar__num {
    display: none;
  }

  .video-sidebar__duration {
    display: none;
  }
}