/* 全局样式 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.video-card {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: transform 0.3s, box-shadow 0.3s;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.video-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #222;
}

.video-card h3 a:hover {
  color: #1890ff;
}

.video-card .meta {
  color: #999;
  font-size: 13px;
  margin-bottom: 8px;
}

.video-card .desc {
  color: #666;
  font-size: 14px;
  line-height: 1.6;
}

/* 列表页样式 */
.list-container {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
}

.list-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 20px 0;
  border-bottom: 1px solid #f0f0f0;
}

.list-item:last-child {
  border-bottom: none;
}

.list-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: #222;
}

.list-item h3 a:hover {
  color: #1890ff;
}

.list-item .meta {
  color: #999;
  font-size: 13px;
  margin-bottom: 6px;
}

.list-item .desc {
  color: #666;
  font-size: 14px;
  line-height: 1.6;
}

.list-item .rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  font-weight: bold;
  border-radius: 6px;
  font-size: 16px;
}

.list-item .topic-tag {
  display: inline-block;
  padding: 4px 12px;
  background: #f0f5ff;
  color: #1890ff;
  border-radius: 4px;
  font-size: 13px;
  white-space: nowrap;
}

.list-item .date-tag {
  padding: 4px 12px;
  background: #f5f5f5;
  color: #666;
  border-radius: 4px;
  font-size: 13px;
  white-space: nowrap;
}

/* UI风格变体 */
.ui-style-0 { --primary: #1890ff; }
.ui-style-1 { --primary: #52c41a; }
.ui-style-2 { --primary: #fa8c16; }
.ui-style-3 { --primary: #eb2f96; }
.ui-style-4 { --primary: #722ed1; }
.ui-style-5 { --primary: #13c2c2; }
.ui-style-6 { --primary: #2f54eb; }
.ui-style-7 { --primary: #fa541c; }
.ui-style-8 { --primary: #a0d911; }
.ui-style-9 { --primary: #faad14; }
.ui-style-10 { --primary: #f5222d; }
.ui-style-11 { --primary: #1890ff; }
.ui-style-12 { --primary: #52c41a; }
.ui-style-13 { --primary: #722ed1; }
.ui-style-14 { --primary: #fa8c16; }
.ui-style-15 { --primary: #13c2c2; }

/* 响应式 */
@media (max-width: 768px) {
  .video-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .list-item {
    flex-direction: column;
    gap: 10px;
  }

  .list-item .rank {
    align-self: flex-start;
  }

  .list-item .date-tag {
    align-self: flex-start;
  }
}