:root{
  --topbar-h:56px;
  --bg:#f3f5f7; --panel:#ffffff; --card:#ffffff; --text:#1f2329; --muted:#8b93a1;
  --line:#e7eaee; --accent:#15a06a; --accent-soft:#e6f6ef; --tagbg:#f5f7f9; --tagbg-hover:#eef6f2;
  --new:#ff4d6d; --shadow:0 1px 3px rgba(20,30,45,.08),0 6px 18px rgba(20,30,45,.05);
  --shadow-hover:0 4px 12px rgba(20,30,45,.12),0 14px 34px rgba(20,30,45,.10);
}
body.dark{
  --bg:#0f1318; --panel:#161b22; --card:#171d26; --text:#e6e9ee; --muted:#7d8694;
  --line:#222a35; --accent:#2ecb86; --accent-soft:#13332a; --tagbg:#1c232e; --tagbg-hover:#222c39;
  --new:#ff5e7a; --shadow:0 1px 3px rgba(0,0,0,.4); --shadow-hover:0 10px 30px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html,body{margin:0}
body.tb-hidden{--topbar-h:0px}
[hidden]{display:none!important}
body{
  background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:14px;line-height:1.5;
}
button{font-family:inherit;cursor:pointer}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:14px;
  height:56px;padding:0 16px;background:var(--panel);border-bottom:1px solid var(--line);
  transition:transform .3s cubic-bezier(.22,1,.36,1);
}
body.tb-hidden .topbar{transform:translateY(-100%)}
.brand{font-size:18px;font-weight:800;letter-spacing:1px;white-space:nowrap;flex:none}
.brand span{color:var(--accent)}
.icon-btn{
  border:none;background:transparent;color:var(--text);font-size:18px;text-decoration:none;
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
}
.icon-btn:hover{background:var(--tagbg)}
.icon-btn svg{display:block}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:4px;flex:none}
.nav-link{text-decoration:none;font-size:12px;color:var(--muted);padding:6px 12px;border:1px solid var(--line);border-radius:8px;transition:all .15s;white-space:nowrap;cursor:pointer;display:inline-block}
.nav-link:hover{background:var(--tagbg);color:var(--text)}
.github-mark{width:22px;height:22px}
.theme-btn svg{width:20px;height:20px;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;fill:none}
.codex-pick select{
  border:1px solid var(--line);background:var(--card);color:var(--text);
  border-radius:10px;padding:7px 12px;font-size:13px;max-width:280px;
}
.search-wrap{flex:1;max-width:520px;position:relative;display:flex;align-items:center}
.search-ico{position:absolute;left:12px;opacity:.5;font-size:13px;pointer-events:none}
#search{
  width:100%;border:1px solid var(--line);background:var(--card);color:var(--text);
  border-radius:12px;padding:9px 12px 9px 34px;font-size:14px;outline:none;
}
#search:focus{border-color:var(--accent)}
.filter-btn{
  position:relative;flex:none;width:36px;height:36px;border-radius:10px;color:var(--muted);
  display:grid;place-items:center;cursor:pointer;
}
.filter-btn input{
  position:absolute;inset:0;margin:0;opacity:0;cursor:pointer;
}
.filter-icon{
  width:100%;height:100%;border-radius:inherit;display:grid;place-items:center;
  transition:background .12s,color .12s,box-shadow .12s;
}
.filter-icon svg{
  width:19px;height:19px;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
}
.filter-btn:hover .filter-icon{background:var(--tagbg);color:var(--text)}
.filter-btn input:checked + .filter-icon{
  background:var(--accent-soft);color:var(--accent);box-shadow:inset 0 0 0 1px rgba(21,160,106,.18);
}
.filter-btn input:focus-visible + .filter-icon{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- 布局 ---------- */
.layout{display:flex;align-items:flex-start}
.sidebar{
  position:sticky;top:var(--topbar-h);align-self:flex-start;flex:0 0 248px;width:248px;
  height:calc(100vh - var(--topbar-h));overflow-y:auto;overflow-x:hidden;background:var(--panel);
  border-right:1px solid var(--line);padding:14px 10px;
  transition:top .3s cubic-bezier(.22,1,.36,1),height .3s cubic-bezier(.22,1,.36,1),
    flex-basis .3s cubic-bezier(.22,1,.36,1),width .3s cubic-bezier(.22,1,.36,1),
    padding .3s cubic-bezier(.22,1,.36,1),transform .3s cubic-bezier(.22,1,.36,1);
}
.sidebar.closed{flex-basis:0;width:0;padding-left:0;padding-right:0;border-right-color:transparent}
.sb-head,.tree{width:228px}
.sb-head{padding:6px 10px 12px}
.codex-title{display:block;font-weight:700;font-size:15px}
.codex-meta{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.main{flex:1;min-width:0;padding:18px 22px 80px}
.loading{
  color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:10px;
  padding:14px 16px;margin:0 0 14px;box-shadow:var(--shadow);
}

/* ---------- 目录树 ---------- */
.tree{font-size:13.5px}
.tree-item{user-select:none}
.tree-row{
  display:flex;align-items:center;gap:4px;padding:6px 8px;border-radius:8px;cursor:pointer;color:var(--text);
}
.tree-row:hover{background:var(--tagbg)}
.tree-row.active{background:var(--accent-soft);color:var(--accent);font-weight:600}
.tw-arrow{width:14px;text-align:center;color:var(--muted);font-size:10px;transition:transform .15s}
.tree-item.collapsed>.tree-row .tw-arrow{transform:rotate(-90deg)}
.tw-name{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tw-count{color:var(--muted);font-size:11px}
.tree-children{margin-left:12px;border-left:1px solid var(--line);padding-left:4px}
.tree-item.collapsed>.tree-children{display:none}

/* ---------- 结果栏 / 面包屑 ---------- */
.result-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px;margin-bottom:12px;min-height:26px}
.result-bar b{color:var(--accent)}
#resultInfo{display:contents}
.crumbs{display:inline-flex;align-items:center;flex-wrap:wrap;gap:4px}
.crumb{
  border:1px solid var(--line);background:var(--card);color:var(--muted);border-radius:999px;
  padding:3px 11px;font-size:12px;line-height:1.4;
  transition:color .12s,border-color .12s,background .12s;
}
button.crumb:hover{color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}
.crumb.current{color:var(--accent);border-color:var(--accent);background:var(--accent-soft);font-weight:600}
.crumb-sep{color:var(--muted);opacity:.6;font-size:11px}

/* ---------- 瀑布流 ---------- */
.masonry{position:relative;min-height:1px;contain:layout paint}
.col{display:none}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);cursor:pointer;transition:opacity .16s,box-shadow .12s,border-color .12s;
  position:absolute;left:0;top:0;contain:layout paint style;will-change:transform;backface-visibility:hidden;
}
.masonry.is-relayouting .card{
  transition:
    transform .32s cubic-bezier(.22,1,.36,1),
    width .32s cubic-bezier(.22,1,.36,1),
    height .32s cubic-bezier(.22,1,.36,1),
    opacity .16s,
    box-shadow .12s,
    border-color .12s;
}
.masonry.is-relayouting .card-img-wrap,
.masonry.is-relayouting .card-tags{
  transition:height .32s cubic-bezier(.22,1,.36,1),background .12s;
}
.card:hover{box-shadow:var(--shadow-hover);border-color:transparent}
.card.copied{outline:2px solid var(--accent)}
.card-img-wrap{
  position:relative;line-height:0;background:var(--tagbg);overflow:hidden;
}
.card-img-wrap::before{
  content:"";position:absolute;inset:0;opacity:0;pointer-events:none;
  background:linear-gradient(110deg,transparent 0%,rgba(255,255,255,.34) 45%,transparent 70%);
  transform:translateX(-100%);
}
.card-img-wrap::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  color:var(--muted);font-size:12px;letter-spacing:.5px;opacity:0;white-space:nowrap;
}
.card-img-wrap.is-loading::before{opacity:1;animation:shimmer 1.3s ease-in-out infinite}
.card-img-wrap.is-loading::after{content:"图片加载中";opacity:.8}
.card-img-wrap.is-error::after{content:"图片加载失败";opacity:.8}
.card-img{width:100%;height:100%;display:block;object-fit:cover;opacity:0;transition:opacity .18s ease}
.card-img.is-loaded{opacity:1}
@keyframes shimmer{to{transform:translateX(100%)}}
.zoom-btn{
  position:absolute;top:8px;right:8px;border:none;border-radius:8px;width:30px;height:30px;
  background:rgba(0,0,0,.45);color:#fff;font-size:13px;opacity:0;transition:opacity .12s;
}
.card-img-wrap:hover .zoom-btn{opacity:1}
.card-badges{
  position:absolute;top:8px;left:8px;z-index:6;display:flex;flex-direction:column;
  align-items:flex-start;gap:5px;pointer-events:none;
}
.badge-neg{
  display:inline-flex;align-items:center;line-height:1.35;
  font-size:11px;font-weight:800;color:#70517f;
  background:rgba(247,240,250,.94);border:1px solid rgba(112,81,127,.18);
  padding:2px 9px;border-radius:999px;box-shadow:0 1px 4px rgba(0,0,0,.14);
  backdrop-filter:blur(8px);
}
.badge-neg[hidden],.badge-count[hidden],.badge-neg-chip[hidden]{display:none!important}
body.dark .badge-neg{
  color:#d7c3e2;background:rgba(124,93,140,.28);border-color:rgba(215,195,226,.18);
}
.badge-count{
  display:inline-flex;align-items:center;gap:3px;line-height:1.35;
  font-size:12px;font-weight:700;color:#fff;background:rgba(0,0,0,.56);
  padding:2px 8px 2px 6px;border-radius:999px;box-shadow:0 1px 4px rgba(0,0,0,.16);
  backdrop-filter:blur(8px);
}
.badge-count svg{width:12px;height:12px}
.card-body{padding:12px 13px 11px}
.card-title-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.card-title{
  margin:0;font-size:15px;font-weight:700;line-height:1.3;word-break:break-word;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.badge-new{
  flex:none;font-size:10px;font-weight:800;letter-spacing:.5px;color:#fff;background:var(--new);
  padding:2px 6px;border-radius:6px;
}
.badge-neg-chip{
  flex:none;font-size:10px;font-weight:800;color:#70517f;background:rgba(247,240,250,.94);
  border:1px solid rgba(112,81,127,.16);padding:1px 6px;border-radius:6px;
}
body.dark .badge-neg-chip{
  color:#d7c3e2;background:rgba(124,93,140,.24);border-color:rgba(215,195,226,.16);
}
.fav-btn{
  margin-left:auto;flex:none;border:none;background:transparent;cursor:pointer;
  font-size:16px;line-height:1;color:var(--muted);padding:2px 5px;border-radius:7px;
  transition:background .12s,color .12s;
}
.fav-btn:hover{background:var(--tagbg);color:#f5b301}
.fav-btn.on{color:#f5b301}
.card.no-img .card-title{font-size:14.5px}
.card-tags{
  font-size:12.5px;color:var(--muted);background:var(--tagbg);border-radius:10px;padding:9px 10px;
  white-space:pre-wrap;word-break:break-word;overflow:hidden;
  transition:background .12s;
}
.card-tags.is-clipped{-webkit-mask-image:linear-gradient(180deg,#000 70%,transparent);mask-image:linear-gradient(180deg,#000 70%,transparent)}
.card:hover .card-tags{background:var(--tagbg-hover)}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:9px;min-height:21px}
.card-path{flex:1;min-width:0;color:var(--muted);font-size:11px;line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-actions{display:flex;align-items:center;gap:5px;flex:none}
.mini-copy{
  border:1px solid var(--line);background:transparent;color:var(--muted);
  border-radius:999px;padding:2px 7px;font-size:11px;line-height:1.4;
}
.mini-copy:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.copy-hint{color:var(--accent);font-size:11px;font-weight:600;opacity:0;transition:opacity .12s;white-space:nowrap}
.card:hover .copy-hint{opacity:1}

/* ---------- 待配图小卡 ---------- */
.card.no-img .card-img-wrap{display:none}

@media (prefers-reduced-motion: reduce){
  .masonry.is-relayouting .card,
  .masonry.is-relayouting .card-img-wrap,
  .masonry.is-relayouting .card-tags,
  .topbar,.sidebar{
    transition:none;
  }
}

/* ---------- 回到顶部 ---------- */
.back-top{
  position:fixed;right:26px;bottom:30px;z-index:40;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line);background:var(--panel);color:var(--muted);
  box-shadow:var(--shadow-hover);display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s,transform .25s,visibility .25s,color .12s,border-color .12s;
}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{color:var(--accent);border-color:var(--accent)}
.back-top svg{width:20px;height:20px;stroke:currentColor;stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);
  background:var(--accent);color:#fff;padding:10px 20px;border-radius:999px;font-weight:600;font-size:14px;
  box-shadow:0 8px 24px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:60;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 灯箱 ---------- */
.lightbox{
  position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.86);display:none;place-items:center;padding:26px;cursor:zoom-out;
}
.lightbox:not([hidden]){display:grid}
.lightbox-panel{
  width:min(1180px,96vw);height:min(820px,92vh);display:grid;grid-template-columns:minmax(0,1fr) 340px;
  background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:14px;overflow:hidden;
  box-shadow:0 18px 60px rgba(0,0,0,.46);cursor:default;position:relative;
}
.lightbox-stage{
  min-width:0;min-height:0;background:#050608;display:grid;place-items:center;position:relative;padding:18px;overflow:hidden;
}
.lightbox img{
  position:absolute;inset:18px;width:calc(100% - 36px);height:calc(100% - 36px);
  object-fit:contain;display:block;border-radius:10px;
}
.lightbox-info{
  min-width:0;overflow:auto;padding:18px;background:var(--panel);border-left:1px solid var(--line);
}
.lightbox-head h2{font-size:18px;line-height:1.35;margin:0 0 4px}
.lightbox-meta{font-size:12px;color:var(--muted);word-break:break-word}
.lightbox-actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.lightbox-actions button,.section-head button{
  border:none;background:var(--tagbg);color:#fff;font-weight:800;
  border-radius:999px;padding:7px 12px;font-size:12px;box-shadow:0 4px 12px rgba(0,0,0,.14);
  transition:filter .12s,transform .12s,box-shadow .12s;
}
.lightbox-actions button:hover,.section-head button:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 6px 16px rgba(0,0,0,.18)}
#copyPositive{background:#20a66f}
#copyNegative{background:#d15353}
#copyAll{background:#2d7fd3}
#copyRawTag{background:var(--tagbg);color:var(--text);border:1px solid var(--line);box-shadow:none}
#copyRawTag:hover{background:var(--tagbg-hover);filter:none}
.lightbox-section{margin-top:12px}
.section-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.section-label{font-size:12px;font-weight:700;color:var(--muted)}
.section-head button{margin-left:auto;padding:5px 11px;font-size:12px;line-height:1.35}
.lightbox-section pre{
  margin:0;max-height:170px;overflow:auto;white-space:pre-wrap;word-break:break-word;
  background:var(--tagbg);border:1px solid var(--line);border-radius:10px;padding:10px;
  color:var(--text);font:12px/1.55 ui-monospace,SFMono-Regular,Consolas,monospace;
}
.lightbox-thumbs{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.lightbox-thumb{
  width:30px;height:28px;border-radius:8px;border:1px solid var(--line);background:var(--tagbg);
  color:var(--muted);font-size:12px;
}
.lightbox-thumb.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:800}
.lightbox-close{
  position:absolute;right:10px;top:10px;z-index:2;width:34px;height:34px;border:none;border-radius:10px;
  background:rgba(0,0,0,.46);color:#fff;font-size:24px;line-height:1;
}
.lightbox-nav{
  position:absolute;top:50%;z-index:2;width:40px;height:54px;transform:translateY(-50%);
  border:none;border-radius:12px;background:rgba(0,0,0,.42);color:#fff;font-size:34px;line-height:1;
}
.lightbox-prev{left:14px}
.lightbox-next{right:354px}
.lightbox-nav:hover,.lightbox-close:hover{background:rgba(0,0,0,.62)}

.empty{color:var(--muted);text-align:center;padding:60px 0}
.sentinel{height:1px}

/* ---------- 响应式 ---------- */
@media (max-width:600px){
  .topbar{gap:10px;padding:0 10px}
  .topbar-actions{gap:2px}
  .icon-btn,.filter-btn{width:34px;height:34px}
  .github-mark{width:21px;height:21px}
  .sidebar{position:fixed;z-index:25;top:var(--topbar-h);left:0;box-shadow:var(--shadow-hover)}
  .sidebar.closed{
    transform:translateX(-110%);box-shadow:none;
    flex-basis:248px;width:248px;padding:14px 10px;border-right-color:var(--line);
  }
  .back-top{right:14px;bottom:18px;width:38px;height:38px}
  .brand{font-size:16px}
  .lightbox{padding:10px}
  .lightbox-panel{width:100%;height:94vh;grid-template-columns:1fr;grid-template-rows:minmax(0,58%) minmax(0,42%)}
  .lightbox-info{border-left:none;border-top:1px solid var(--line);padding:14px}
  .lightbox-next{right:14px}
  .lightbox-nav{width:36px;height:48px}
}