/* ========================================
   银川数据要素服务中心 2.0 - 影像中心
   深色背景延续Hero
   ======================================== */

/* 板块容器 */
.media-center {
  padding: var(--section-padding);
  background: var(--dark-bg-secondary);
  position: relative;
}

/* 标题使用深色背景样式 */
.media-center .section-title {
  color: var(--text-on-dark-primary);
}

.media-center .section-desc {
  color: var(--text-on-dark-secondary);
}

/* 视频网格 - 两列对称布局 */
.media-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-md);
}

/* 视频卡片通用样式 */
.media-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 16 / 9;
  background: var(--dark-bg-card);
}

.media-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.media-card:hover img {
  transform: scale(1.05);
}

/* 半透明覆盖层 */
.media-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(4, 13, 26, 0.85) 0%,
    rgba(4, 13, 26, 0.3) 40%,
    transparent 70%
  );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 25%;
  gap: 16px;
  transition: background var(--transition-normal);
}

.media-card:hover .media-card-overlay {
  background: linear-gradient(
    to top,
    rgba(4, 13, 26, 0.9) 0%,
    rgba(4, 13, 26, 0.4) 50%,
    rgba(4, 13, 26, 0.1) 100%
  );
}

.media-card-tag {
  position: absolute;
  bottom: 20px;
  left: 20px;
  padding: 6px 14px;
  background: rgba(79,172,254,0.12);
  border: 1px solid rgba(79,172,254,0.25);
  border-radius: 4px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* 播放按钮 */
.play-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(79,172,254,0.12);
  border: 2px solid rgba(79,172,254,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
}

.play-btn::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid rgba(79,172,254,0.2);
  animation: playPulse 2.5s ease-out infinite;
}

@keyframes playPulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.4); opacity: 0; }
}

.play-btn:hover {
  background: rgba(79,172,254,0.2);
  box-shadow: 0 0 40px rgba(79,172,254,0.3);
  transform: scale(1.1);
}

/* 视频卡片 - 文字描述 */
.media-card-desc {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 20px;
  background: linear-gradient(to top, rgba(4, 13, 26, 0.92) 0%, rgba(4, 13, 26, 0.6) 70%, transparent 100%);
  z-index: 2;
  pointer-events: none;
}

.media-card-desc h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  margin: 0 0 6px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.media-card-desc h4 i {
  font-size: 0.85em;
  opacity: 0.8;
}

.media-card-desc p {
  font-size: var(--font-size-xs);
  color: var(--text-on-dark-secondary);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========================================
   视频弹窗（全屏影院模式）
   ======================================== */

/* 弹窗外层 - 全屏遮罩 */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.video-modal.active {
  display: flex;
}

/* 遮罩层（点击关闭） */
.video-modal-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* 内容容器 */
.video-modal-container {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 960px;
  animation: videoModalIn 0.3s ease;
}

/* 视频元素 - 确保画面可见 */
.video-modal-container video {
  width: 100%;
  height: auto;
  display: block;
  background: #000;
  border-radius: var(--radius-md);
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
  outline: none;
}

/* 关闭按钮 */
.video-modal-close {
  position: absolute;
  top: -48px;
  right: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  z-index: 2;
}

.video-modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: rotate(90deg);
}

@keyframes videoModalIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 响应式 */
@media (max-width: 968px) {
  .media-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .play-btn {
    width: 48px;
    height: 48px;
    font-size: 1rem;
  }

  .video-modal-container {
    width: 95%;
  }

  .video-modal-close {
    top: -40px;
    width: 36px;
    height: 36px;
  }
}