/* ===== 相册页 /photos/ 专用样式 ===== */

/* 顶部引导语 */
.photo-gallery-intro {
  text-align: center;
  margin: 0 0 2rem;
}
.photo-gallery-intro h2 {
  margin: 0 0 0.5rem;
  font-size: 1.6rem;
  letter-spacing: 0.05em;
}
.photo-gallery-intro p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-color, #8a8a8a);
}

/* ===== 分组 ===== */
.album-group {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}
.album-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.album-header {
  margin-bottom: 1.25rem;
  padding-left: 0.75rem;
  border-left: 3px solid #b854d4;
}
.album-header h3 {
  margin: 0 0 0.25rem;
  font-size: 1.2rem;
}
.album-header p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-color, #999);
}

/* 网格容器：手机 1 列 → 平板 2 列 → 桌面 3 列 */
.photo-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0;
  padding: 0;
}
@media (min-width: 600px) {
  .photo-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .photo-gallery {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

/* 单张相片卡片：毛玻璃 + 圆角 + 阴影 */
.photo-item {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.photo-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.15);
}

/* 图片：固定高度裁剪，保证网格整齐；点击可放大（fancybox） */
.photo-item img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  cursor: zoom-in;
}

/* 说明文字 */
.photo-item figcaption {
  padding: 0.6rem 0.9rem;
  font-size: 0.85rem;
  text-align: center;
  color: #666;
}

/* ===== 暗色模式适配 ===== */
html[data-user-color-scheme="dark"] .album-group {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}
html[data-user-color-scheme="dark"] .photo-item {
  background: rgba(35, 35, 45, 0.55);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
html[data-user-color-scheme="dark"] .photo-item:hover {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.6);
}
html[data-user-color-scheme="dark"] .photo-item figcaption {
  color: #bbb;
}