/* ============================================================
   优科生物官网 - 图库中心样式（列表页）
   依赖：css/global.css（CSS 变量、.container、导航与页脚）
        css/news.css（.page-hero 基础、.news-search、.news-filter、
        .pagination、.empty-state）
   ============================================================ */

/* ---------- 图库页深色网格横幅（与资讯/产品页视觉一致） ---------- */
.page-album .page-hero {
  position: relative;
  isolation: isolate;
  padding: 90px 0 130px;
  background: linear-gradient(103deg, rgba(0, 36, 22, .96) 0%, rgba(0, 62, 37, .92) 45%, rgba(10, 120, 62, .6) 100%);
  overflow: hidden;
}

.page-album .page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 52px 52px;
}

.page-album .page-hero__title {
  font-size: 52px;
  line-height: 1.18;
  margin: 14px 0 12px;
  letter-spacing: .5px;
  color: #fff;
}

.page-album .page-hero__desc {
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .85);
  max-width: 720px;
}

/* ---------- 主体容器 ---------- */
.album-layout {
  padding: 48px 0 72px;
}

/* ---------- 图库网格 ---------- */
.album-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.album-card {
  margin: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s, border-color .2s;
  display: flex;
  flex-direction: column;
}

.album-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
}

.album-card__thumb {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  padding: 0;
  border: none;
  background: linear-gradient(135deg, #f7f7f7 0%, #eaeaea 100%);
  overflow: hidden;
  cursor: zoom-in;
}

.album-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.album-card__thumb .album-card__empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 13px;
}

.album-card__zoom {
  position: absolute;
  right: 10px;
  bottom: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(0, 0, 0, .45);
  color: #fff;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .2s, transform .2s;
}

.album-card__thumb:hover .album-card__zoom,
.album-card__thumb:focus-visible .album-card__zoom {
  opacity: 1;
  transform: translateY(0);
}

.album-card__badge {
  position: absolute;
  top: 10px;
  left: 10px;
  max-width: 70%;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(7, 136, 63, .9);
  color: #fff;
  font-size: 12px;
  line-height: 1.7;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.album-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
}

.album-card__title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.album-card__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.album-card__download {
  margin-top: auto;
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-primary);
  font-size: 13px;
  line-height: 1.5;
  transition: color .2s, border-color .2s, background .2s;
}

.album-card__download:hover {
  color: var(--color-primary-hover);
  border-color: var(--color-primary);
  background: #e6f4ec;
}

/* ---------- 灯箱 ---------- */
.album-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1001;
  display: none;
  align-items: center;
  justify-content: center;
}

.album-lightbox.is-open {
  display: flex;
}

.album-lightbox__mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .86);
}

.album-lightbox__box {
  position: relative;
  width: min(1040px, calc(100vw - 40px));
  max-height: calc(100vh - 40px);
  display: flex;
  flex-direction: column;
  z-index: 1;
}

.album-lightbox__stage {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 12px;
  background: #000;
}

.album-lightbox__img {
  max-width: 100%;
  max-height: calc(100vh - 150px);
  width: auto;
  height: auto;
  object-fit: contain;
}

.album-lightbox__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  color: #fff;
  transition: background .2s;
}

.album-lightbox__btn:hover {
  background: rgba(255, 255, 255, .26);
}

.album-lightbox__prev {
  left: 14px;
}

.album-lightbox__next {
  right: 14px;
}

.album-lightbox__close {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 0, 0, .5);
  color: #fff;
  transition: background .2s;
}

.album-lightbox__close:hover {
  background: rgba(0, 0, 0, .75);
}

.album-lightbox__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 42px 18px 16px;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, .78) 100%);
  color: #fff;
  text-align: center;
}

.album-lightbox__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.album-lightbox__desc {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .82);
  margin-top: 2px;
}

.album-lightbox__counter {
  position: absolute;
  top: 16px;
  left: 18px;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(0, 0, 0, .5);
  color: #fff;
  font-size: 13px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .album-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 991px) {
  .page-album .page-hero {
    padding: 64px 0 120px;
  }

  .page-album .page-hero__title {
    font-size: 40px;
  }
}

@media (max-width: 767px) {
  .page-album .page-hero {
    padding: 48px 0 110px;
  }

  .page-album .page-hero__title {
    font-size: 30px;
  }

  .page-album .page-hero__desc {
    font-size: 15px;
  }

  .album-layout {
    padding: 32px 0 56px;
  }

  .album-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .album-card__body {
    padding: 12px 12px;
  }

  .album-card__title {
    font-size: 14px;
  }

  .album-lightbox__btn {
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 420px) {
  .album-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .album-card,
  .album-card__zoom {
    transition: none;
  }
}