/* ============================================================
   典籍库（2026-10-18 改版）
   照后台「书籍库」的版式：左侧书目树 / 右侧筛选 + 书卡网格 + 分页；
   进书后左栏变书内目录，右侧阅读。只展示后端白名单内的公版通行本。
   ============================================================ */
.libpage {
  --lb-gold: #7A6334;
  --lb-gold-ink: #8A6E36;
  --lb-gold-line: rgba(168, 137, 78, .30);
  --lb-ink: #2A2824;
  --lb-sub: #6B6660;
  --lb-mut: #6B655B;   /* TD-038 P1-02：元信息 ≥4.5:1 */
  --lb-red: #8E2C22;
  --lb-wash: #F8F3E9;
  --lb-wash-soft: #FBF7EF;
  position: fixed; inset: 0;
  z-index: calc(var(--z-modal) + 3);
  display: flex; flex-direction: column;
  background: linear-gradient(180deg, #FDFBF6, #F6F0E5);
  color: #1C1B19;
  opacity: 0; visibility: hidden;
  transition: opacity .22s var(--ease-out), visibility 0s linear .22s;
}
.libpage.open { opacity: 1; visibility: visible; transition: opacity .22s var(--ease-out), visibility 0s linear 0s; }
body.library-open { overflow: hidden; }

.libpage-x {
  position: absolute; top: 18px; right: 20px; z-index: 3;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid rgba(168,137,78,.38); background: rgba(255,255,255,.62);
  color: #6B6660; font-size: 17px; line-height: 1; cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.libpage-x:hover { color: var(--lb-red); border-color: rgba(142,44,34,.5); background: #fff; }

.libpage-main { flex: 1 1 auto; min-height: 0; display: flex; }

/* ---------- 左栏：书目树 / 书内目录 ---------- */
.libpage-menu {
  flex: 0 0 246px; min-height: 0; display: flex; flex-direction: column;
  padding: 20px 12px 14px;
  border-right: 1px solid rgba(168,137,78,.22);
  background: #FFFDF8;
}
.libpage-title {
  font-family: var(--serif); font-size: 24px; font-weight: 700;
  letter-spacing: 6px; color: var(--lb-gold); text-indent: 5px;
  padding: 0 8px;
}
.libpage-sub { font-size: 12.5px; letter-spacing: 2px; color: var(--lb-mut); margin-top: 2px; padding: 0 8px; }
.libpage-search {
  width: calc(100% - 12px); height: 36px; margin: 14px 6px 4px; padding: 0 12px;
  border-radius: 9px; border: 1px solid rgba(28,27,25,.14);
  background: #fff; color: var(--lb-ink); font-size: 13.5px;
  outline: none; transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.libpage-search:focus { border-color: rgba(168,137,78,.72); box-shadow: 0 0 0 3px rgba(168,137,78,.1); }
.libpage-cats { flex: 1 1 auto; min-height: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; padding: 6px 4px 8px; }
.libpage-note {
  margin-top: 8px; padding: 10px 10px 0; font-size: 11.5px; line-height: 1.75;
  color: var(--lb-mut); border-top: 1px dashed rgba(28,27,25,.12);
}

/* 目录树（同后台书籍库） */
.libpage .lt-grp { font-size: 11.5px; font-weight: 700; letter-spacing: .16em; color: #8A8478; padding: 14px 8px 6px; }
.libpage .lt-node { display: block; }
.libpage .lt-sub {
  display: flex; align-items: center; gap: 8px; width: 100%; text-align: left;
  margin: 1px 0; padding: 8px 10px; border: 0; border-left: 2px solid transparent; border-radius: 6px;
  cursor: pointer; font: inherit; font-size: 13.8px; color: #4A463E;
  background: transparent; transition: background .15s var(--ease), color .15s var(--ease);
}
.libpage .lt-sub:hover { background: var(--lb-wash-soft); }
.libpage .lt-sub.lt-era {
  margin-top: 4px; color: var(--lb-ink);
  background: linear-gradient(90deg, var(--lb-wash) 0%, rgba(255,253,248,0) 92%);
}
.libpage .lt-sub .n { margin-left: auto; font-size: 11px; color: var(--lb-mut); font-weight: 400; }
.libpage .lt-era .chev { width: 13px; height: 13px; flex: 0 0 auto; color: var(--lb-mut); transition: transform .18s var(--ease); }
.libpage .lt-node.open > .lt-era .chev { transform: rotate(180deg); }
.libpage .lt-kids { display: none; flex-direction: column; margin: 1px 0 5px 12px; padding-left: 10px; border-left: 1px solid rgba(168,137,78,.28); }
.libpage .lt-node.open > .lt-kids { display: flex; }
.libpage .lt-sch {
  display: flex; align-items: center; gap: 6px; width: 100%; text-align: left;
  margin: 1px 0; padding: 6px 10px; border: 0; border-left: 2px solid transparent; border-radius: 6px;
  cursor: pointer; font: inherit; font-size: 12.8px; color: var(--lb-sub);
  background: transparent; transition: background .15s var(--ease), color .15s var(--ease);
}
.libpage .lt-sch > span:first-child { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.libpage .lt-sch:hover { background: var(--lb-wash-soft); }
.libpage .lt-sch.on { background: rgba(178,58,46,.07); border-left-color: var(--lb-red); color: var(--lb-red); font-weight: 600; }
.libpage .lt-sch .n { flex: 0 0 auto; margin-left: auto; font-size: 10.5px; color: var(--lb-mut); }
.libpage .lt-sch.on .n { color: var(--lb-red); }

/* ---------- 右栏 ---------- */
.libpage-body {
  flex: 1 1 auto; min-width: 0; overflow-y: auto; -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain; padding: 26px 34px 64px;
}
.lib-loading { padding: 70px 12px; text-align: center; color: var(--lb-mut); font-size: 14px; letter-spacing: 2px; }
.lib-empty { max-width: 560px; margin: 64px auto; text-align: center; color: var(--lb-sub); }
.lib-empty b { display: block; font-family: var(--serif); font-size: 19px; color: var(--lb-gold); margin-bottom: 8px; }
.lib-empty p { font-size: 14px; line-height: 1.9; }

/* 书目前计数 */
.lib-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; max-width: 1180px; margin: 0 auto 16px; padding-right: 54px; }
.lib-cnt { margin-left: auto; font-size: 12.5px; color: var(--lb-mut); letter-spacing: 1px; }

/* 书目卡片：2026-10-21 只留书名/作者/朝代，两行排布 */
.lib-grid {
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(232px, 1fr)); gap: 14px;
}
.lib-book {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; justify-content: space-between; gap: 14px;
  min-height: 104px; text-align: left;
  padding: 18px 18px 14px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--lb-gold-line);
  background: linear-gradient(180deg, #FFFDF8, #FAF4E8);
  box-shadow: 0 1px 2px rgba(90,60,20,.04);
  font: inherit; color: inherit;
  transition: transform .2s var(--ease-out), box-shadow .2s var(--ease-out), border-color .2s var(--ease-out);
}
.lib-book:before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--lb-gold), rgba(168,137,78,.12));
}
.lib-book:hover { transform: translateY(-2px); border-color: rgba(168,137,78,.62); box-shadow: 0 10px 24px rgba(90,60,20,.11); }
.lib-book:focus-visible { outline: 2px solid var(--lb-red); outline-offset: 3px; }
.lib-book .lb-name {
  font-family: var(--serif); font-size: 18px; font-weight: 700; line-height: 1.45;
  letter-spacing: 1.5px; color: var(--lb-ink);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.lib-book .lb-line { display: flex; align-items: center; gap: 10px; min-width: 0; }
.lib-book .lb-author {
  flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: 12.5px; color: var(--lb-mut);
}
.lib-book .lb-dyn {
  flex: 0 0 auto; font-size: 11px; line-height: 1.6; padding: 0 8px; border-radius: 999px;
  color: var(--lb-gold-ink); border: 1px solid rgba(168,137,78,.38); background: rgba(222,164,74,.08);
}

/* 篇名命中 */
.lib-sec-hits { max-width: 1180px; margin: 0 auto 18px; padding: 14px 16px;
  border: 1px dashed rgba(168,137,78,.34); border-radius: 12px; background: rgba(255,255,255,.5); }
.lib-sec-title { font-size: 12px; letter-spacing: 2px; color: var(--lb-gold); margin-bottom: 8px; }
.lib-sec-hit { display: block; width: 100%; text-align: left; padding: 7px 10px; border: 0;
  border-radius: 7px; background: transparent; color: #4B4741; cursor: pointer; font: inherit;
  font-size: 13.5px; line-height: 1.7; }
.lib-sec-hit:hover { background: rgba(168,137,78,.12); color: var(--lb-gold-ink); }

/* 分页 */
.lib-pager { max-width: 1180px; margin: 22px auto 0; display: flex; justify-content: center; gap: 6px; flex-wrap: wrap; }
.lib-pager button {
  min-width: 34px; height: 32px; padding: 0 10px; border-radius: 8px; cursor: pointer;
  border: 1px solid rgba(28,27,25,.14); background: #fff; color: var(--lb-sub);
  font: inherit; font-size: 12.5px;
}
.lib-pager button:hover:not(:disabled) { border-color: rgba(168,137,78,.55); color: var(--lb-gold-ink); }
.lib-pager button.on { background: rgba(168,137,78,.16); border-color: rgba(168,137,78,.58); color: var(--lb-gold-ink); font-weight: 600; }
.lib-pager button:disabled { opacity: .42; cursor: default; }

/* ---------- 阅读器 ---------- */
.lib-reader { max-width: 900px; margin: 0 auto; }
.lib-reader-head { display: flex; align-items: center; gap: 16px; padding-bottom: 14px;
  border-bottom: 1px solid rgba(168,137,78,.26); margin-bottom: 16px; }
.lib-rh-main { flex: 1 1 auto; min-width: 0; }
.lib-rh-main h2 { font-family: var(--serif); font-size: 25px; font-weight: 700; letter-spacing: 3px; color: var(--lb-gold); }
.lib-rh-main p { margin-top: 4px; font-size: 12.5px; letter-spacing: 1px; color: var(--lb-mut); }
.lib-back {
  flex: 0 0 auto; padding: 8px 15px; border-radius: 999px; cursor: pointer;
  border: 1px solid rgba(28,27,25,.16); background: #fff; color: #4B4741;
  font: inherit; font-size: 13px; letter-spacing: 1px; transition: all .2s var(--ease);
}
.lib-back:hover { border-color: rgba(168,137,78,.55); color: var(--lb-gold-ink); }
.lib-text { min-width: 0; padding-bottom: 40px; }
.lib-sec-head { font-family: var(--serif); font-size: 20px; font-weight: 700;
  letter-spacing: 2px; text-align: center; color: var(--lb-gold-ink); margin: 4px 0 24px; }
.lib-text p { font-family: var(--serif); font-size: 16.5px; line-height: 2.05;
  color: var(--lb-ink); text-indent: 2em; margin: 0 0 .72em; letter-spacing: .3px; }
.lib-read-foot { margin-top: 40px; padding-top: 14px; border-top: 1px dashed rgba(28,27,25,.14);
  text-align: center; font-size: 12px; color: var(--lb-mut); letter-spacing: 1px; }

/* 结果卡里的「原文见典籍库」入口（深色面板） */
.gua-lib-hint a { color: #D9BC7A; border-bottom: 1px dotted rgba(217,188,122,.6); text-decoration: none; }
.gua-lib-hint a:hover { color: #F0D79A; }

@media (max-width: 1000px) {
  .lib-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}
@media (max-width: 800px) {
  .libpage-x { top: 12px; right: 12px; width: 36px; height: 36px; }
  .libpage-main { flex-direction: column; }
  .libpage-menu {
    flex: 0 0 auto; max-height: 42vh; padding: 12px 10px 8px;
    border-right: 0; border-bottom: 1px solid rgba(168,137,78,.22);
  }
  .libpage-title { font-size: 19px; letter-spacing: 4px; }
  .libpage-sub, .libpage-note { display: none; }
  .libpage-search { margin: 8px 4px 2px; width: calc(100% - 8px); }
  .libpage-cats { padding-top: 2px; }
  .libpage-body { padding: 16px 14px 56px; }
  .lib-bar { margin-bottom: 12px; padding-right: 42px; }
  .lib-grid { grid-template-columns: 1fr; }
  .lib-reader-head { flex-wrap: wrap; gap: 10px; }
  .lib-rh-main h2 { font-size: 21px; }
  .lib-text p { font-size: 15.5px; line-height: 1.95; }
}

/* TD-038 P1-10：典籍搜索框命中区 */
#libSearch, .libpage-search { min-height: 32px; }

/* TD-038 P2-05：搜索空态主行动 */
.lib-clear-btn { margin-top: 10px; min-height: 32px; padding: 6px 16px; border-radius: 8px;
  border: 1px solid var(--lb-gold-line); background: rgba(122,99,52,.08); color: var(--lb-gold);
  font-family: var(--serif); font-size: 13px; letter-spacing: 1px; cursor: pointer; }
.lib-clear-btn:hover { background: rgba(122,99,52,.16); }

/* ============================================================
   夜读 · 墨蓝（深色主题）—— 2026-10-25 定稿
   ------------------------------------------------------------
   library.css 自带浅色调色板（--lb-* token + 硬编码浅色背景），
   从未适配夜读主题，导致典籍库在夜读下整页浅底（49 项对比度失败）。
   本块：① 重定义 --lb-* 为深色 ② 覆盖所有硬编码浅色背景/边框。
   纪律：只改颜色，不动布局。
   ============================================================ */
body[data-theme="night"] .libpage {
  --lb-gold: #C9A85E;
  --lb-gold-ink: #D9BC7A;
  --lb-gold-line: rgba(201,168,94,.30);
  --lb-ink: #E8E2D6;
  --lb-sub: #A8B2BC;
  --lb-mut: #8A99A8;
  --lb-red: #E8836F;
  --lb-wash: #152638;
  --lb-wash-soft: #1B3045;
  background: linear-gradient(180deg, #0E1D2E, #0A1826) !important;
  color: #E8E2D6 !important;
}
body[data-theme="night"] .libpage-x {
  background: rgba(23,41,61,.62) !important;
  border-color: rgba(201,168,94,.38) !important;
  color: #A8B2BC !important;
}
body[data-theme="night"] .libpage-x:hover { color: #E8836F !important; border-color: rgba(232,131,111,.5) !important; background: rgba(23,41,61,.85) !important; }

/* 左栏 */
body[data-theme="night"] .libpage-menu {
  background: #0C1A2A !important;
  border-right-color: rgba(201,168,94,.18) !important;
}
body[data-theme="night"] .libpage-title { color: var(--lb-gold) !important; }
body[data-theme="night"] .libpage-sub { color: var(--lb-mut) !important; }
body[data-theme="night"] .libpage-search {
  background: #16283B !important;
  border-color: rgba(255,255,255,.10) !important;
  color: #E8E2D6 !important;
}
body[data-theme="night"] .libpage-search:focus {
  border-color: rgba(201,168,94,.72) !important;
  box-shadow: 0 0 0 3px rgba(201,168,94,.10) !important;
}
body[data-theme="night"] .libpage-note { color: var(--lb-mut) !important; border-top-color: rgba(255,255,255,.08) !important; }

/* 目录树 */
body[data-theme="night"] .libpage .lt-grp { color: #7A8A9A !important; }
body[data-theme="night"] .libpage .lt-sub { color: #B0BAC6 !important; }
body[data-theme="night"] .libpage .lt-sub:hover { background: rgba(255,255,255,.06) !important; }
body[data-theme="night"] .libpage .lt-sub.lt-era {
  color: #E8E2D6 !important;
  background: linear-gradient(90deg, rgba(23,41,61,.60) 0%, rgba(255,253,248,0) 92%) !important;
}
body[data-theme="night"] .libpage .lt-sub .n { color: var(--lb-mut) !important; }
body[data-theme="night"] .libpage .lt-era .chev { color: var(--lb-mut) !important; }
body[data-theme="night"] .libpage .lt-kids { border-left-color: rgba(201,168,94,.20) !important; }
body[data-theme="night"] .libpage .lt-sch { color: var(--lb-sub) !important; }
body[data-theme="night"] .libpage .lt-sch:hover { background: rgba(255,255,255,.05) !important; }
body[data-theme="night"] .libpage .lt-sch.on { background: rgba(232,131,111,.10) !important; border-left-color: var(--lb-red) !important; color: var(--lb-red) !important; }
body[data-theme="night"] .libpage .lt-sch.on .n { color: var(--lb-red) !important; }

/* 右栏 */
body[data-theme="night"] .lib-loading { color: var(--lb-mut) !important; }
body[data-theme="night"] .lib-empty { color: var(--lb-sub) !important; }
body[data-theme="night"] .lib-empty b { color: var(--lb-gold) !important; }

/* 书目卡片 */
body[data-theme="night"] .lib-cnt { color: var(--lb-mut) !important; }
body[data-theme="night"] .lib-book {
  background: linear-gradient(180deg, #1B3045, #142435) !important;
  border-color: var(--lb-gold-line) !important;
  box-shadow: 0 1px 2px rgba(0,0,0,.20) !important;
}
body[data-theme="night"] .lib-book:before {
  background: linear-gradient(180deg, var(--lb-gold), rgba(201,168,94,.12)) !important;
}
body[data-theme="night"] .lib-book:hover {
  border-color: rgba(201,168,94,.62) !important;
  box-shadow: 0 10px 24px rgba(0,0,0,.30) !important;
}
body[data-theme="night"] .lib-book .lb-name { color: #E8E2D6 !important; }
body[data-theme="night"] .lib-book .lb-author { color: var(--lb-mut) !important; }
body[data-theme="night"] .lib-book .lb-dyn {
  color: var(--lb-gold-ink) !important;
  border-color: rgba(201,168,94,.38) !important;
  background: rgba(201,168,94,.08) !important;
}

/* 搜索命中 */
body[data-theme="night"] .lib-sec-hits {
  border-color: rgba(201,168,94,.24) !important;
  background: rgba(255,255,255,.04) !important;
}
body[data-theme="night"] .lib-sec-title { color: var(--lb-gold) !important; }
body[data-theme="night"] .lib-sec-hit { color: #B0BAC6 !important; }
body[data-theme="night"] .lib-sec-hit:hover { background: rgba(201,168,94,.12) !important; color: var(--lb-gold-ink) !important; }

/* 分页 */
body[data-theme="night"] .lib-pager button {
  background: #16283B !important;
  border-color: rgba(255,255,255,.10) !important;
  color: var(--lb-sub) !important;
}
body[data-theme="night"] .lib-pager button:hover:not(:disabled) { border-color: rgba(201,168,94,.55) !important; color: var(--lb-gold-ink) !important; }
body[data-theme="night"] .lib-pager button.on {
  background: rgba(201,168,94,.12) !important;
  border-color: rgba(201,168,94,.48) !important;
  color: var(--lb-gold-ink) !important;
}

/* 阅读器 */
body[data-theme="night"] .lib-reader-head { border-bottom-color: rgba(201,168,94,.20) !important; }
body[data-theme="night"] .lib-rh-main h2 { color: var(--lb-gold) !important; }
body[data-theme="night"] .lib-rh-main p { color: var(--lb-mut) !important; }
body[data-theme="night"] .lib-back {
  background: #16283B !important;
  border-color: rgba(255,255,255,.10) !important;
  color: #B0BAC6 !important;
}
body[data-theme="night"] .lib-back:hover { border-color: rgba(201,168,94,.55) !important; color: var(--lb-gold-ink) !important; }
body[data-theme="night"] .lib-sec-head { color: var(--lb-gold-ink) !important; }
body[data-theme="night"] .lib-text p { color: #D5CFE2 !important; }
body[data-theme="night"] .lib-read-foot { border-top-color: rgba(255,255,255,.06) !important; color: var(--lb-mut) !important; }

/* 结果卡入口 */
body[data-theme="night"] .gua-lib-hint a { color: #D9BC7A !important; }
body[data-theme="night"] .gua-lib-hint a:hover { color: #F0D79A !important; }

/* 清除按钮 */
body[data-theme="night"] .lib-clear-btn {
  background: rgba(201,168,94,.10) !important;
  border-color: var(--lb-gold-line) !important;
  color: var(--lb-gold) !important;
}
body[data-theme="night"] .lib-clear-btn:hover { background: rgba(201,168,94,.20) !important; }