/* ========== 视频卡片网格 ========== */

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 默认 2 列 */
  gap: 1rem;
  margin-top: 1rem;
}

@media (max-width: 360px) {
  .video-grid {
    grid-template-columns: 1fr; /* 极窄屏 1 列 */
  }
}

@media (min-width: 900px) {
  .video-grid {
    grid-template-columns: repeat(3, 1fr); /* 宽屏 3 列 */
  }
}

/* ========== 单个视频卡片 ========== */

.video-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--lightgray);
  border-radius: 12px;
  overflow: hidden;
  background: var(--light);
  transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.video-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

/* ========== 封面缩略图 ========== */

.video-cover-link {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #000;
  cursor: pointer;
}

.video-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.video-cover-link:hover .video-cover-img {
  transform: scale(1.05);
  opacity: 0.8;
}

/* ========== 卡片内容区 ========== */

.video-card-title {
  margin: 0.5rem 0.6rem 0.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.3;
}

.video-card-title a {
  color: var(--dark);
  text-decoration: none;
}

.video-card-title a:hover {
  color: var(--secondary);
}

.video-card-date {
  margin: 0 0.6rem;
  font-size: 0.72rem;
  color: var(--gray);
}

.video-card-desc {
  margin: 0.3rem 0.6rem 0;
  font-size: 0.78rem;
  color: var(--darkgray);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-notes {
  margin: 0.4rem 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.video-note-link {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  font-size: 0.7rem;
  border-radius: 4px;
  background: color-mix(in srgb, var(--secondary) 12%, transparent);
  color: var(--secondary);
  text-decoration: none;
  transition: background 0.15s;
}

.video-note-link:hover {
  background: color-mix(in srgb, var(--secondary) 22%, transparent);
}

.video-card-category {
  margin: auto 0.6rem 0.55rem;
  align-self: flex-start;
  font-size: 0.68rem;
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
  background: var(--highlight);
  color: var(--darkgray);
}

@media (min-width: 900px) {
  .video-card-title {
    margin: 0.6rem 0.75rem 0.25rem;
    font-size: 1rem;
  }
  .video-card-date {
    margin: 0 0.75rem;
    font-size: 0.8rem;
  }
  .video-card-desc {
    margin: 0.4rem 0.75rem 0;
    font-size: 0.85rem;
  }
  .video-card-notes {
    margin: 0.5rem 0.75rem;
    gap: 0.35rem;
  }
  .video-note-link {
    padding: 0.15rem 0.55rem;
    font-size: 0.75rem;
  }
  .video-card-category {
    margin: auto 0.75rem 0.65rem;
    font-size: 0.72rem;
    padding: 0.15rem 0.5rem;
  }
}

/* ========== 视频详情页播放器 ========== */

.video-detail-page lite-youtube {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 1rem 0 1.5rem;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

/* ========== 状态提示 ========== */

.video-query-loading,
.video-query-empty,
.video-query-error {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--darkgray);
  font-size: 0.95rem;
}

.video-query-error {
  color: #c44;
}