/* ===== 物种页：图片图集 =====
   瀑布流（CSS 多列）：保留每张图原始宽高比，多列并排、高低错落；
   每张图下方常显图注「作者 · 许可协议（CC 链接） · 来源页」。
   点击图片由 PhotoSwipe 5（MIT，assets/vendor/photoswipe/）开灯箱。
   配合 _includes/species-gallery.html 与 assets/gallery.js；
   颜色/圆角全部取自 assets/custom.css 的 CSS 变量，自动跟随深色模式。
   选择器统一加 .species-gallery 前缀：custom.css 里 .content h2 / .content p / .content a
   的优先级高于单类选择器，不加前缀会被它们盖掉。 */

.species-gallery{margin:2.1em 0 .6em;border-top:1px solid var(--line);padding-top:1.1em}

/* 标题行：标题 + 张数，说明单独占一行 */
.species-gallery .gallery-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.4em 1em;margin:0 0 1em}
.species-gallery .gallery-title{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5em;font-size:1.02em;font-weight:700;line-height:1.5;margin:0;padding:0;border-bottom:0}
.species-gallery .gallery-count{font-size:.76em;font-weight:600;letter-spacing:.2px;color:var(--accent-strong);background:var(--accent-soft);border-radius:999px;padding:1px 10px;white-space:nowrap}
.species-gallery .gallery-lead{flex-basis:100%;margin:0;font-size:.9em;color:var(--muted);line-height:1.6}

/* 瀑布流：column-width 决定列宽，浏览器自动分列并按列平衡高度 */
.species-gallery .gallery-grid{column-width:280px;column-gap:14px;margin:0}

/* 单张卡片：图片 + 下方图注，整体不能被拆到两列，卡片间距用 margin-bottom */
.species-gallery .gallery-card{display:block;break-inside:avoid;page-break-inside:avoid;-webkit-column-break-inside:avoid;margin:0 0 14px;overflow:hidden;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s,transform .15s}

/* 本页检索（assets/photo-search.js）用 [hidden] 收起不匹配的卡片与整组。
   上面给卡片写死了 display:block，UA 默认的 [hidden]{display:none} 会被盖掉，
   所以这里必须显式补一条，否则筛掉的卡片仍然可见。 */
.species-gallery .gallery-card[hidden],
.species-gallery[hidden]{display:none}

/* 只有一张或两张照片时，收窄列数，避免列宽过小、右侧留下大片空白 */
.species-gallery .gallery-grid:has(> .gallery-card:only-child){columns:1;max-width:540px}
.species-gallery .gallery-grid:has(> .gallery-card:nth-child(2):last-child){columns:2;max-width:800px}

/* 图片按原始宽高比显示，不裁切 */
.species-gallery .gallery-item{position:relative;display:block;overflow:hidden;line-height:0;background:var(--accent-softer);text-decoration:none}
.species-gallery .gallery-item img{display:block;width:100%;height:auto;transition:transform .35s ease}
.species-gallery .gallery-item-zoom{position:absolute;top:7px;right:7px;width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(8,20,14,.62);color:#fff;font-size:13px;line-height:1;opacity:0;transform:scale(.85);transition:opacity .18s,transform .18s}

.species-gallery .gallery-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.species-gallery .gallery-card:hover img{transform:scale(1.035)}
.species-gallery .gallery-card:hover .gallery-item-zoom,.species-gallery .gallery-item:focus-visible .gallery-item-zoom{opacity:1;transform:scale(1)}
.species-gallery .gallery-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}

/* 图注：常显，不依赖悬停 */
.species-gallery .gallery-caption{display:block;padding:8px 10px 9px;font-size:11.5px;line-height:1.55;color:var(--muted)}
.species-gallery .gallery-caption-credit{display:block;color:var(--ink);font-weight:600;overflow-wrap:anywhere}
.species-gallery .gallery-caption-meta{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 8px;margin-top:4px;font-size:10.5px}
.species-gallery .gallery-caption-meta a{color:var(--accent);text-decoration:none}
.species-gallery .gallery-caption-meta a:hover{text-decoration:underline;text-underline-offset:2px}

@media (max-width:900px){
  .species-gallery .gallery-grid{column-width:240px;column-gap:12px}
  .species-gallery .gallery-card{margin-bottom:12px}
}
@media (max-width:640px){
  .species-gallery .gallery-grid{column-width:150px;column-gap:10px}
  .species-gallery .gallery-card{margin-bottom:10px}
  .species-gallery .gallery-lead{font-size:.86em}
  .species-gallery .gallery-caption{padding:6px 8px 7px;font-size:10.5px}
  .species-gallery .gallery-caption-meta{font-size:10px;gap:1px 6px}
}

@media (prefers-reduced-motion:reduce){
  .species-gallery .gallery-card,.species-gallery .gallery-item img,.species-gallery .gallery-item-zoom{transition:none}
  .species-gallery .gallery-card:hover{transform:none}
  .species-gallery .gallery-card:hover img{transform:none}
}

/* ===== PhotoSwipe 说明条（assets/gallery.js 动态注入） ===== */
.pswp-gallery-caption{position:absolute;left:0;right:0;bottom:0;z-index:10;padding:10px 16px 14px;pointer-events:none;background:linear-gradient(to top,rgba(0,0,0,.62),rgba(0,0,0,0));color:#fff;font-size:12.5px;line-height:1.6;text-align:center}
.pswp-gallery-caption-inner{pointer-events:auto;display:inline-block;max-width:820px;text-shadow:0 1px 3px rgba(0,0,0,.75);overflow-wrap:anywhere}
.pswp-gallery-caption a{color:#fff;text-decoration:underline;text-underline-offset:2px}
.pswp-gallery-caption a:hover{color:#d8f0e2}
.pswp-gallery-caption-credit{font-weight:600}

/* ===== 分类单元页（科 / 亚科 / 属）的图片小节 + 「全部图片」页 =====
   .taxon-photos 是外容器：扁平预览时它同时带 .species-gallery（直接复用上面的瀑布流与灯箱），
   按种分组时组内每个 section 各自是 .species-gallery（一个种一个灯箱，互不串）。
   「查看全部 N 张 →」既出现在物种页图集尾部，也出现在分类单元页预览的标题行里。 */
.taxon-photos{margin:2.1em 0 .6em}
.species-gallery .gallery-more-row,
.taxon-photos .gallery-more-row{flex-basis:100%;margin:.9em 0 0;text-align:center}
.species-gallery .gallery-more,
.taxon-photos .gallery-more{display:inline-flex;align-items:center;gap:.45em;padding:.5em 1.2em;border:1px solid var(--accent);border-radius:999px;background:var(--accent-soft);color:var(--accent-strong);font-size:.9em;font-weight:600;line-height:1.5;text-decoration:none;transition:background .15s,color .15s,border-color .15s}
.species-gallery .gallery-more:hover,
.taxon-photos .gallery-more:hover{background:var(--accent);border-color:var(--accent);color:#fff;text-decoration:none}
.species-gallery .gallery-more:focus-visible,
.taxon-photos .gallery-more:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* 分组渲染：每个种一个小节，标题可点回物种页 */
.taxon-photos-group{padding-top:1em;margin:1.6em 0 .6em}
.taxon-photos .gallery-species{font-size:.98em}
.taxon-photos .gallery-species a,
.species-gallery .gallery-species a{color:inherit;text-decoration:none}
.taxon-photos .gallery-species a:hover,
.species-gallery .gallery-species a:hover{color:var(--accent-strong);text-decoration:underline;text-underline-offset:2px}

/* 「全部图片」页头部：标题 + 徽标 + 返回上级 */
.photo-page .photo-page-title{display:flex;flex-wrap:wrap;align-items:baseline;gap:.2em .55em}
.photo-page .photo-page-label{font-size:.5em;font-weight:600;letter-spacing:.02em;color:var(--accent-strong);background:var(--accent-soft);border-radius:999px;padding:2px 10px;white-space:nowrap}
@media (max-width:640px){
  .photo-page .photo-page-label{font-size:.6em}
  .species-gallery .gallery-more,
  .taxon-photos .gallery-more{font-size:.86em;padding:.45em 1em}
}

/* ===== 「全部图片」页的本页检索框（_includes/photo-search.html） =====
   四级图片页共用，只筛当前页已经渲染的照片：按拉丁学名 / 中文名 / 摄影师
   （逻辑在 assets/photo-search.js）。框体常显——脚本被拦时输入框仍在，
   只是筛不动，照片照常可看；不额外发请求，也不依赖全站搜索索引。 */
.photo-page .photo-search{margin:1.4em 0 .2em;padding:12px 14px;background:var(--accent-softer);border:1px solid var(--line);border-radius:var(--radius-sm)}
.photo-page .photo-search-count{font-weight:700;color:var(--accent-strong);margin:0 .18em;white-space:nowrap}
.photo-page .photo-search-label{display:block;font-size:.86em;line-height:1.6;color:var(--muted);margin:0 0 .5em}
.photo-search-row{display:flex;align-items:center;gap:8px}
.photo-search-input{flex:1 1 auto;min-width:0;width:100%;padding:10px 13px;font:inherit;font-size:.95rem;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);color:var(--ink);box-shadow:var(--shadow-sm)}
.photo-search-input::placeholder{color:var(--muted);opacity:.85}
.photo-search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.photo-search-clear{flex:0 0 auto;padding:9px 14px;font:inherit;font-size:.86em;font-weight:600;line-height:1.5;color:var(--accent-strong);background:var(--card);border:1px solid var(--line);border-radius:999px;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.photo-search-clear:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.photo-search-clear:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.photo-page .photo-search-status{font-size:.82em;color:var(--muted);margin:.55em 0 0}
.photo-page .photo-search-empty{font-size:.9em;color:var(--muted);margin:.6em 0 0}
.photo-page .photo-search-empty a{color:var(--accent-strong)}
.photo-search-clear[hidden],
.photo-search-status[hidden],
.photo-search-empty[hidden],
.photo-search-count[hidden]{display:none}
@media (max-width:640px){
  .photo-page .photo-search{padding:10px 11px}
  .photo-page .photo-search-label{font-size:.84em}
  .photo-search-input{font-size:.92rem;padding:9px 11px}
  .photo-search-clear{font-size:.82em;padding:8px 12px}
}
@media print{.photo-page .photo-search{display:none}}