/* 纸间书摘 · 网页版 —— 纸感阅读主题 */
:root {
  --bg: #f5f0e6;
  --surface: #fffdf7;
  --surface-2: #efe8d8;
  --text: #2c2620;
  --text-2: #7d7264;
  --text-3: #a89c88;
  --border: #e3d9c6;
  --accent: #a8442a;
  --accent-soft: #f7e6de;
  --green: #3f6b4f;
  --gold: #a87415;
  --blue-gray: #6b7f94;
  --shadow: 0 1px 2px rgba(60, 48, 30, .06), 0 4px 14px rgba(60, 48, 30, .07);
  --content-scale: 1;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
[data-theme="dark"] {
  --bg: #171512;
  --surface: #221f1a;
  --surface-2: #2b2822;
  --text: #e9e2d2;
  --text-2: #a39881;
  --text-3: #6f675a;
  --border: #38342b;
  --accent: #d9694a;
  --accent-soft: #3a2823;
  --green: #6fa383;
  --gold: #c99a3f;
  --blue-gray: #8ba3b8;
  --shadow: 0 1px 2px rgba(0, 0, 0, .25), 0 4px 14px rgba(0, 0, 0, .3);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: calc(15px * var(--content-scale));
  line-height: 1.65;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { display: block; }

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 232px; flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
  padding: 18px 14px;
}
.main { flex: 1; min-width: 0; padding: 26px 32px 60px; }
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 16px; border-bottom: 1px solid var(--border); }
.brand .logo {
  width: 38px; height: 38px; border-radius: 11px;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 20px; font-weight: 700;
}
.brand .name { font-family: var(--serif); font-size: 17px; font-weight: 700; }
.brand .sub { font-size: 11px; color: var(--text-3); }
.nav { display: flex; flex-direction: column; gap: 2px; margin-top: 14px; }
.nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 9px;
  color: var(--text-2); font-size: 14px;
}
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav a .ico { width: 18px; text-align: center; }
.nav .group-label { font-size: 11px; color: var(--text-3); padding: 14px 10px 4px; }
.sidebar .foot { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-3); }
.sync-btn {
  width: 100%; padding: 7px 0; margin-bottom: 8px;
  border: 1px solid var(--border); border-radius: 9px;
  background: var(--surface-2); color: var(--text-2); font-size: 12.5px;
}
.sync-btn:hover { color: var(--accent); border-color: var(--accent); }
.sync-btn:disabled { opacity: .6; cursor: wait; }

/* ---------- 顶栏（移动端） ---------- */
.topbar { display: none; }

/* ---------- 通用组件 ---------- */
.page-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.page-title { font-family: var(--serif); font-size: 24px; font-weight: 700; }
.page-desc { color: var(--text-3); font-size: 13px; }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; box-shadow: var(--shadow);
}
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 11px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  font-size: 12.5px; color: var(--text-2);
}
.chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.on:hover { color: #fff; }
.tag-chip { background: var(--surface-2); border-color: transparent; }
.badge { display: inline-block; padding: 1px 9px; border-radius: 999px; font-size: 12px; }
.st-1 { background: #e8ebef; color: #5d6673; }
.st-2 { background: #f4ecd4; color: var(--gold); }
.st-3 { background: #ddebe0; color: var(--green); }
.st-4 { background: var(--accent-soft); color: var(--accent); }
.st-5 { background: #e2e8ee; color: var(--blue-gray); }
.st-0 { background: var(--surface-2); color: var(--text-3); }
[data-theme="dark"] .st-1 { background: #2c2f34; color: #a6adb8; }
[data-theme="dark"] .st-2 { background: #3a3324; color: var(--gold); }
[data-theme="dark"] .st-3 { background: #25342a; color: var(--green); }
.btn {
  padding: 7px 16px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-2); font-size: 13.5px;
}
.btn:hover { color: var(--accent); border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { opacity: .92; color: #fff; }
.select, .input {
  padding: 7px 11px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 13.5px; font-family: inherit;
  outline: none;
}
.input:focus, .select:focus { border-color: var(--accent); }
.empty { text-align: center; color: var(--text-3); padding: 60px 0; font-size: 14px; }
.muted { color: var(--text-3); font-size: 12.5px; }
.stars { color: var(--gold); letter-spacing: 1px; }

/* ---------- 书架 ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 20px; }
.filters .spacer { flex: 1; }
.book-grid {
  display: grid; gap: 20px 16px;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
}
.book-card { display: flex; flex-direction: column; gap: 8px; }
.book-card .cover-wrap {
  position: relative; border-radius: 10px; overflow: hidden;
  box-shadow: var(--shadow); background: var(--surface-2);
  aspect-ratio: 3 / 4.2; transition: transform .18s ease;
}
.book-card:hover .cover-wrap { transform: translateY(-4px); }
.book-card .cover-wrap img { width: 100%; height: 100%; object-fit: cover; }
.book-card .cover-ph {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); color: var(--text-3); font-size: 13px; text-align: center; padding: 10px;
}
.book-card .nc {
  position: absolute; right: 7px; bottom: 7px;
  background: rgba(0,0,0,.55); color: #fff; font-size: 11px;
  padding: 1px 8px; border-radius: 999px; backdrop-filter: blur(2px);
}
.book-card .b-name {
  font-size: 13.5px; font-weight: 600; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.book-card .b-name:hover { color: var(--accent); }
.book-card .b-author { font-size: 12px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.book-card .b-meta { display: flex; align-items: center; gap: 6px; }

/* ---------- 书籍详情 ---------- */
.book-hero { display: flex; gap: 26px; margin-bottom: 26px; }
.book-hero .big-cover {
  width: 190px; flex-shrink: 0; border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow); aspect-ratio: 3 / 4.2; background: var(--surface-2);
}
.book-hero .big-cover img { width: 100%; height: 100%; object-fit: cover; }
.book-hero .info { flex: 1; min-width: 0; }
.book-hero h1 { font-family: var(--serif); font-size: 26px; line-height: 1.35; margin-bottom: 6px; }
.book-hero .b-line { color: var(--text-2); font-size: 14px; margin-bottom: 3px; }
.book-hero .b-tags { display: flex; gap: 6px; flex-wrap: wrap; margin: 12px 0; }
.meta-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px 20px; margin-top: 14px; font-size: 13px;
}
.meta-grid .k { color: var(--text-3); margin-right: 8px; }
details.summary { margin: 18px 0; }
details.summary summary {
  cursor: pointer; font-weight: 600; font-size: 14px; color: var(--text-2);
  padding: 8px 0; list-style: none;
}
details.summary summary::before { content: "▸ "; color: var(--accent); }
details.summary[open] summary::before { content: "▾ "; }
details.summary .body {
  font-family: var(--serif); font-size: calc(14.5px * var(--content-scale));
  color: var(--text-2); white-space: pre-wrap; line-height: 1.9;
  border-left: 3px solid var(--border); padding: 4px 0 4px 16px;
}
.review-card { padding: 18px 22px; margin: 18px 0; }
.review-card .r-title { font-family: var(--serif); font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.review-card .r-body { font-family: var(--serif); white-space: pre-wrap; line-height: 1.9; color: var(--text); }
.review-card .r-date { margin-top: 10px; }
.chapter-head {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-size: 16.5px; font-weight: 700;
  margin: 28px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border);
}
.chapter-head .cnt { font-size: 12px; color: var(--text-3); font-weight: 400; }
.note-item { padding: 15px 18px; margin-bottom: 12px; border-radius: 12px; }
.note-item .n-content {
  font-family: var(--serif); font-size: calc(15px * var(--content-scale));
  line-height: 1.95; white-space: pre-wrap;
}
.note-item .n-idea {
  margin-top: 10px; padding: 9px 14px;
  background: var(--accent-soft); border-left: 3px solid var(--accent);
  border-radius: 0 9px 9px 0;
  font-family: var(--serif); font-size: calc(14px * var(--content-scale));
  line-height: 1.85; white-space: pre-wrap; color: var(--text);
}
.note-item .n-idea .lbl { display: block; font-size: 11px; color: var(--accent); font-family: var(--sans); margin-bottom: 2px; letter-spacing: 1px; }
.note-item .n-meta { margin-top: 8px; font-size: 12px; color: var(--text-3); display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 首页 ---------- */
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card { padding: 16px 18px; }
.stat-card .v { font-size: 26px; font-weight: 700; font-family: var(--serif); }
.stat-card .v small { font-size: 13px; font-weight: 400; color: var(--text-3); margin-left: 3px; }
.stat-card .k { font-size: 12.5px; color: var(--text-3); margin-top: 2px; }
.section { margin-bottom: 30px; }
.section-title { font-family: var(--serif); font-size: 18px; font-weight: 700; margin-bottom: 14px; display: flex; align-items: baseline; gap: 10px; }
.section-title .more { font-size: 12.5px; color: var(--accent); font-weight: 400; }
.h-scroll { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 8px; }
.h-scroll .book-card { width: 132px; flex-shrink: 0; }
.bar-chart { display: flex; align-items: flex-end; gap: 10px; height: 150px; padding: 10px 4px 0; }
.bar-chart .bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.bar-chart .bar { width: 100%; max-width: 46px; background: linear-gradient(180deg, var(--accent), #c96b4e); border-radius: 6px 6px 2px 2px; min-height: 3px; transition: height .4s ease; }
.bar-chart .bar-lab { font-size: 11.5px; color: var(--text-3); }
.bar-chart .bar-val { font-size: 11px; color: var(--text-2); }
.done-list { display: flex; flex-direction: column; }
.done-list .row { display: flex; align-items: center; gap: 12px; padding: 9px 4px; border-bottom: 1px dashed var(--border); font-size: 14px; }
.done-list .row:last-child { border-bottom: none; }
.done-list .row .d { color: var(--text-3); font-size: 12.5px; margin-left: auto; white-space: nowrap; }
.done-list .row .t { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.done-list .row .t:hover { color: var(--accent); }

/* ---------- 笔记流 ---------- */
.note-feed-item { padding: 14px 18px; margin-bottom: 10px; }
.note-feed-item .nf-book { font-size: 12.5px; color: var(--accent); margin-bottom: 4px; }
.note-feed-item .nf-content { font-family: var(--serif); font-size: calc(14.5px * var(--content-scale)); line-height: 1.9; white-space: pre-wrap; }
.note-feed-item .nf-idea { margin-top: 8px; font-size: 13px; color: var(--text-2); border-left: 3px solid var(--border); padding-left: 12px; white-space: pre-wrap; }
.note-feed-item .nf-meta { margin-top: 8px; font-size: 12px; color: var(--text-3); }

/* ---------- 书单 ---------- */
.collection-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.collection-card { padding: 18px; }
.collection-card .c-year { font-family: var(--serif); font-size: 22px; font-weight: 700; }
.collection-card .c-title { font-size: 13.5px; color: var(--text-2); margin: 2px 0 12px; }
.collection-card .covers { display: flex; gap: 8px; }
.collection-card .covers img, .collection-card .covers .ph {
  width: 52px; height: 72px; object-fit: cover; border-radius: 6px;
  box-shadow: var(--shadow); background: var(--surface-2);
}
.collection-card .c-cnt { margin-top: 12px; font-size: 12.5px; color: var(--text-3); }
.cl-book { display: flex; gap: 16px; padding: 16px; margin-bottom: 14px; align-items: flex-start; }
.cl-book img, .cl-book .ph { width: 76px; flex-shrink: 0; border-radius: 8px; aspect-ratio: 3/4.2; object-fit: cover; background: var(--surface-2); }
.cl-book .cl-info { flex: 1; min-width: 0; }
.cl-book .cl-name { font-family: var(--serif); font-size: 16.5px; font-weight: 700; }
.cl-book .cl-name:hover { color: var(--accent); }
.cl-book .cl-author { font-size: 13px; color: var(--text-3); margin: 2px 0 6px; }
.cl-book .cl-rec { font-size: 13.5px; color: var(--text-2); font-family: var(--serif); border-left: 3px solid var(--accent-soft); padding-left: 12px; margin-top: 6px; }

/* ---------- 统计 ---------- */
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .stats-grid { grid-template-columns: 1fr; } }
.panel { padding: 20px 22px; }
.panel h3 { font-family: var(--serif); font-size: 16px; margin-bottom: 14px; }
.top-book-row { display: flex; align-items: center; gap: 12px; padding: 7px 0; font-size: 13.5px; }
.top-book-row img, .top-book-row .ph { width: 34px; height: 46px; object-fit: cover; border-radius: 4px; background: var(--surface-2); flex-shrink: 0; }
.top-book-row .rank { width: 20px; text-align: center; color: var(--text-3); font-family: var(--serif); font-weight: 700; }
.top-book-row .rank.top { color: var(--accent); }
.top-book-row .nm { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-book-row .nm:hover { color: var(--accent); }
.top-book-row .c { color: var(--text-3); font-size: 12.5px; white-space: nowrap; }
.session-row { display: flex; gap: 10px; padding: 7px 0; font-size: 13px; border-bottom: 1px dashed var(--border); align-items: baseline; }
.session-row:last-child { border: none; }
.session-row .d { color: var(--text-3); white-space: nowrap; font-size: 12.5px; }
.session-row .n { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.session-row .n:hover { color: var(--accent); }
.session-row .t { color: var(--text-2); white-space: nowrap; }
.dist-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; font-size: 13px; }
.dist-row .lab { width: 40px; color: var(--text-2); }
.dist-row .track { flex: 1; height: 10px; background: var(--surface-2); border-radius: 99px; overflow: hidden; }
.dist-row .fill { height: 100%; background: var(--accent); border-radius: 99px; }
.dist-row .val { width: 30px; text-align: right; color: var(--text-3); font-size: 12.5px; }

/* ---------- 搜索面板 ---------- */
.palette-mask {
  position: fixed; inset: 0; background: rgba(30, 24, 16, .38);
  display: flex; justify-content: center; align-items: flex-start; padding-top: 12vh; z-index: 50;
  backdrop-filter: blur(2px);
}
.palette {
  width: min(600px, 92vw); background: var(--surface);
  border-radius: 16px; box-shadow: 0 18px 60px rgba(0,0,0,.25);
  overflow: hidden; border: 1px solid var(--border);
}
.palette .p-input { width: 100%; border: none; padding: 16px 20px; font-size: 16px; background: transparent; color: var(--text); outline: none; font-family: inherit; }
.palette .p-results { max-height: 46vh; overflow-y: auto; border-top: 1px solid var(--border); }
.palette .p-group { font-size: 11.5px; color: var(--text-3); padding: 10px 20px 4px; letter-spacing: 1px; }
.palette .p-item { display: flex; gap: 12px; padding: 9px 20px; align-items: baseline; cursor: pointer; }
.palette .p-item:hover, .palette .p-item.sel { background: var(--surface-2); }
.palette .p-item .t { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.palette .p-item .s { font-size: 12.5px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.palette .p-empty { padding: 26px; text-align: center; color: var(--text-3); font-size: 13.5px; }
.palette .p-foot { padding: 8px 20px; border-top: 1px solid var(--border); font-size: 11.5px; color: var(--text-3); display: flex; gap: 14px; }
kbd { background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; font-size: 11px; font-family: inherit; }

/* ---------- 登录 ---------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-card { width: 340px; padding: 36px 32px; text-align: center; }
.login-card .logo {
  width: 54px; height: 54px; border-radius: 16px; margin: 0 auto 14px;
  background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 28px; font-weight: 700;
}
.login-card h1 { font-family: var(--serif); font-size: 20px; margin-bottom: 4px; }
.login-card .tip { font-size: 12.5px; color: var(--text-3); margin-bottom: 20px; }
.login-card .input { width: 100%; text-align: center; margin-bottom: 12px; }
.login-card .btn { width: 100%; }
.login-card .err { color: var(--accent); font-size: 12.5px; margin-bottom: 10px; min-height: 18px; }

/* ---------- 工具 ---------- */
.fs-adjust { display: inline-flex; align-items: center; gap: 6px; }
.fs-adjust button {
  width: 26px; height: 26px; border-radius: 7px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-2); font-size: 13px; line-height: 1;
}
.fs-adjust button:hover { color: var(--accent); border-color: var(--accent); }
.head-actions { display: flex; align-items: center; gap: 10px; }
.theme-btn {
  width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-2); font-size: 15px;
}
.theme-btn:hover { color: var(--accent); border-color: var(--accent); }
.search-trigger {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); background: var(--surface); border-radius: 9px;
  padding: 6px 12px; color: var(--text-3); font-size: 13px; min-width: 170px;
}
.search-trigger:hover { border-color: var(--accent); color: var(--accent); }
.search-trigger kbd { margin-left: auto; }
.content-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .layout { flex-direction: column; }
  .sidebar {
    width: 100%; height: auto; position: static; flex-direction: row; align-items: center;
    padding: 10px 14px; border-right: none; border-bottom: 1px solid var(--border);
    overflow-x: auto;
  }
  .brand { border-bottom: none; padding: 0 10px 0 0; }
  .brand .sub { display: none; }
  .nav { flex-direction: row; margin-top: 0; }
  .nav a { white-space: nowrap; }
  .nav .group-label { display: none; }
  .sidebar .foot { margin-top: 0; margin-left: auto; padding-top: 0; border-top: none; white-space: nowrap; }
  .sidebar .foot .sync-text { display: none; }
  .main { padding: 18px 16px 50px; }
  .book-hero { flex-direction: column; gap: 16px; }
  .book-hero .big-cover { width: 140px; }
  .book-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 14px 12px; }
}