/* ============================================================
   五灯会元 · 禅门传灯读本
   纯静态站点样式 —— 无外部依赖
   ============================================================ */

:root {
  --bg: #f5f0e4;
  --bg-deep: #efe8d8;
  --panel: #fdfaf3;
  --ink: #33302a;
  --ink-soft: #6b6455;
  --ink-faint: #98917f;
  --accent: #9e3d3d;        /* 朱砂 */
  --accent-soft: #c76e5c;
  --cyan: #46606b;         /* 黛青 */
  --border: #ddd2b8;
  --border-soft: #e8e0cb;
  --mark-bg: #f3e3c2;
  --shadow: 0 2px 14px rgba(80, 66, 40, 0.10);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", "NSimSun", serif;
  --kai: "Kaiti SC", "STKaiti", "KaiTi", "Noto Serif SC", serif;
  --maxw: 820px;
}

[data-theme="dark"] {
  --bg: #191a1e;
  --bg-deep: #131417;
  --panel: #21232a;
  --ink: #d3ccbd;
  --ink-soft: #a49c8b;
  --ink-faint: #7a7466;
  --accent: #d08070;
  --accent-soft: #c98f7a;
  --cyan: #8fa8b0;
  --border: #3a3c44;
  --border-soft: #2d2f36;
  --mark-bg: #4a4020;
  --shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
}

/* ---------- 基础 ---------- */

* { box-sizing: border-box; }

html {
  font-size: var(--user-font, 17px);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--serif);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  font-family: var(--serif);
  cursor: pointer;
}

::selection { background: var(--mark-bg); }

/* ---------- 顶栏 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 9px;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover { text-decoration: none; }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--accent);
  color: #f6f1e7;
  font-family: var(--kai);
  font-size: 17px;
  align-self: center;
}

.brand-name {
  font-family: var(--kai);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 4px;
}

.brand-sub {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 2px;
}

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--ink-soft);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 15px;
  letter-spacing: 1px;
}

.main-nav a:hover { color: var(--accent); text-decoration: none; background: var(--bg-deep); }

.main-nav a.active {
  color: var(--accent);
  background: var(--bg-deep);
}

.tools { display: flex; gap: 6px; }

.tool-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--ink-soft);
  border-radius: 6px;
  min-width: 34px;
  height: 30px;
  font-size: 13px;
  line-height: 1;
}

.tool-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- 主区 ---------- */

.app-main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 20px 70px;
  min-height: 65vh;
}

.loading {
  text-align: center;
  color: var(--ink-faint);
  padding: 90px 0;
  letter-spacing: 6px;
}

/* ---------- 通用块 ---------- */

.page-title {
  font-family: var(--kai);
  font-size: 26px;
  letter-spacing: 3px;
  margin: 8px 0 6px;
}

.page-sub {
  color: var(--ink-faint);
  font-size: 14px;
  margin-bottom: 26px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 16px 0;
  box-shadow: var(--shadow);
}

.chip {
  display: inline-block;
  font-size: 12px;
  padding: 1px 9px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--ink-soft);
  margin-right: 6px;
  vertical-align: middle;
}

.chip.done { color: #4a7d52; border-color: #4a7d52; }
[data-theme="dark"] .chip.done { color: #7fb98a; border-color: #7fb98a; }

.chip.todo { color: var(--ink-faint); }

.tag {
  display: inline-block;
  font-size: 12px;
  padding: 0 8px;
  border-radius: 4px;
  background: var(--bg-deep);
  color: var(--ink-soft);
  margin-right: 6px;
}

/* ---------- 首页 ---------- */

.hero {
  text-align: center;
  padding: 46px 10px 34px;
}

.hero-title {
  font-family: var(--kai);
  font-size: 46px;
  letter-spacing: 16px;
  margin: 0 0 10px;
  text-indent: 16px;
}

.hero-title .accent { color: var(--accent); }

.hero-meta {
  color: var(--ink-soft);
  letter-spacing: 3px;
  margin-bottom: 6px;
}

.hero-quote {
  font-family: var(--kai);
  color: var(--ink-faint);
  font-size: 15px;
  margin: 18px 0 30px;
  letter-spacing: 2px;
}

.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 9px 30px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  font-size: 16px;
  letter-spacing: 3px;
  background: transparent;
  color: var(--accent);
}

.btn.primary {
  background: var(--accent);
  color: #f6f1e7;
}

.btn:hover { text-decoration: none; opacity: 0.88; }

.progress-wrap {
  max-width: 460px;
  margin: 34px auto 0;
  text-align: center;
}

.progress-label {
  font-size: 13px;
  color: var(--ink-faint);
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.progress-bar {
  height: 8px;
  border-radius: 6px;
  background: var(--bg-deep);
  border: 1px solid var(--border-soft);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-soft), var(--accent));
  border-radius: 6px;
  min-width: 2px;
}

.home-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 10px;
}

@media (max-width: 680px) {
  .home-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 34px; letter-spacing: 10px; text-indent: 10px; }
  .brand-sub { display: none; }
}

.list-t {
  font-family: var(--kai);
  font-size: 18px;
  letter-spacing: 2px;
  margin: 0 0 12px;
  border-left: 4px solid var(--accent);
  padding-left: 10px;
}

.list-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 2px;
  border-bottom: 1px dashed var(--border-soft);
  font-size: 16px;
}

.list-item:last-child { border-bottom: none; }

.list-item .muted { color: var(--ink-faint); font-size: 13px; white-space: nowrap; }

/* ---------- 目录页 ---------- */

.volume-card {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  margin: 14px 0;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.volume-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 20px;
  cursor: pointer;
  user-select: none;
}

.volume-head:hover { background: var(--bg-deep); }

.volume-num {
  font-family: var(--kai);
  font-size: 22px;
  color: var(--accent);
  white-space: nowrap;
}

.volume-title { font-size: 17px; letter-spacing: 1px; }

.volume-count { margin-left: auto; font-size: 12.5px; color: var(--ink-faint); white-space: nowrap; }

.volume-desc {
  padding: 0 20px 12px 58px;
  color: var(--ink-faint);
  font-size: 13.5px;
  line-height: 1.7;
}

.volume-body {
  padding: 6px 20px 16px 58px;
  border-top: 1px dashed var(--border-soft);
}

.cat-title {
  font-size: 14px;
  color: var(--cyan);
  letter-spacing: 2px;
  margin: 12px 0 4px;
}

.entry-link {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 8px;
  border-radius: 6px;
  font-size: 16px;
  color: var(--ink);
}

.entry-link:hover { background: var(--bg-deep); text-decoration: none; color: var(--accent); }

.entry-link .st { font-size: 12px; white-space: nowrap; }

.empty-hint { color: var(--ink-faint); font-size: 13.5px; padding: 8px 0 4px; }

/* ---------- 条目阅读页 ---------- */

.crumbs {
  font-size: 13.5px;
  color: var(--ink-faint);
  margin-bottom: 6px;
  letter-spacing: 1px;
}

.crumbs a { color: var(--ink-faint); }
.crumbs a:hover { color: var(--accent); }

.entry-head { padding: 6px 0 14px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }

.entry-title {
  font-family: var(--kai);
  font-size: 34px;
  letter-spacing: 6px;
  margin: 4px 0 8px;
}

.entry-alias { color: var(--ink-faint); font-size: 14px; margin-bottom: 8px; }

.entry-meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }

.mode-bar {
  display: flex;
  gap: 8px;
  margin: 18px 0 6px;
}

.mode-btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink-soft);
  border-radius: 7px;
  padding: 4px 16px;
  font-size: 14px;
  letter-spacing: 2px;
}

.mode-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-deep);
}

.seg { margin: 22px 0; }

.seg-no {
  font-family: var(--kai);
  color: var(--accent-soft);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.seg-o {
  font-size: 1.18rem;
  line-height: 2.1;
  white-space: pre-line;
  text-align: justify;
}

.seg-t {
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--ink-soft);
  white-space: pre-line;
  text-align: justify;
  margin-top: 10px;
  padding-left: 12px;
  border-left: 3px solid var(--border);
}

[data-mode="orig"] .seg-t { display: none; }
[data-mode="trans"] .seg-o { display: none; }
[data-mode="trans"] .seg-t { border-left: none; padding-left: 0; margin-top: 0; }

.seg-verse { text-align: center; font-family: var(--kai); }

.notes {
  margin-top: 12px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.notes-t {
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 3px;
}

.note-item { margin-bottom: 4px; padding-left: 1.2em; text-indent: -1.2em; }

.note-k { color: var(--accent-soft); }

.term {
  border-bottom: 1px dotted var(--accent-soft);
  cursor: pointer;
  color: inherit;
}

.term:hover { color: var(--accent); background: var(--mark-bg); }

/* ---------- 解析区 ---------- */

.analysis-wrap { margin-top: 40px; }

.sec-title {
  font-family: var(--kai);
  font-size: 21px;
  letter-spacing: 4px;
  margin: 34px 0 6px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sec-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.gongan {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 18px 22px;
  margin: 14px 0;
  box-shadow: var(--shadow);
}

.gongan-tag { font-size: 13px; color: var(--accent); letter-spacing: 2px; margin-bottom: 6px; }

.gongan-tag .ext { color: var(--cyan); font-size: 12px; margin-left: 8px; }

.gongan-quote {
  font-family: var(--kai);
  font-size: 18px;
  line-height: 1.9;
  margin: 8px 0 12px;
  white-space: pre-line;
  color: var(--ink);
}

.gongan-interp { font-size: 16px; line-height: 1.95; text-align: justify; }

.gongan-interp p { margin: 6px 0; }

.interp-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--cyan);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 7px;
  margin-right: 9px;
  vertical-align: 1.5px;
  letter-spacing: 2px;
}

/* ---------- 折叠组件（深入释义） ---------- */

.fold {
  border: 1px dashed var(--border);
  border-radius: 8px;
  margin-top: 12px;
}

.fold summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  min-height: 44px;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--cyan);
  user-select: none;
}

.fold summary::-webkit-details-marker { display: none; }

.fold summary::before {
  content: '▸';
  font-size: 12px;
  color: var(--accent-soft);
  transition: transform 0.2s ease;
}

.fold[open] summary::before { transform: rotate(90deg); }

.fold summary:hover { color: var(--accent); }

.fold-hint {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0;
  color: var(--ink-faint);
}

.fold-body { padding: 4px 18px 16px; }

.deep-text {
  font-size: 15.5px;
  line-height: 1.95;
  text-align: justify;
  white-space: pre-line;
  color: var(--ink);
}

.deep-text + .scripture-quote { margin-top: 12px; }

.gongan-intent {
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--bg-deep);
  border-radius: 6px;
  font-size: 15px;
  line-height: 1.8;
}

.gongan-intent .k { color: var(--accent); letter-spacing: 1px; }

.gongan-note {
  margin-top: 10px;
  font-size: 14px;
  color: var(--ink-faint);
  line-height: 1.75;
}

.dharma {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-left: 4px solid var(--cyan);
  border-radius: 8px;
  padding: 18px 22px;
  margin: 14px 0;
  box-shadow: var(--shadow);
}

.dharma-topic {
  font-size: 17.5px;
  letter-spacing: 1px;
  margin-bottom: 8px;
  color: var(--cyan);
}

.dharma-detail { font-size: 16px; line-height: 1.95; text-align: justify; }

.dharma-detail p { margin: 6px 0; }

.scripture-quote {
  margin: 10px 0;
  padding: 8px 14px;
  border-left: 3px solid var(--border);
  background: var(--bg-deep);
  border-radius: 0 6px 6px 0;
  font-size: 15px;
  line-height: 1.85;
}

.scripture-loc { color: var(--ink-faint); font-size: 12.5px; margin-top: 3px; }

.entry-glossary {
  margin-top: 26px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: 15px;
}

.entry-glossary .t {
  color: var(--cyan);
  letter-spacing: 2px;
  font-size: 13px;
  margin-right: 10px;
}

.pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 44px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.pager a {
  color: var(--ink-soft);
  font-size: 14.5px;
  max-width: 46%;
}

.pager a:hover { color: var(--accent); }

.pager .dir { color: var(--ink-faint); font-size: 12.5px; margin-right: 6px; }

.pager .next { text-align: right; margin-left: auto; }

/* ---------- 术语页 ---------- */

.gloss-cat {
  font-family: var(--kai);
  font-size: 18px;
  letter-spacing: 3px;
  color: var(--cyan);
  margin: 26px 0 8px;
}

.gloss-item {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 10px 0;
  box-shadow: var(--shadow);
}

.gloss-item:target { border-color: var(--accent); }

.gloss-term { font-size: 18px; letter-spacing: 1px; }

.gloss-py { color: var(--ink-faint); font-size: 12.5px; margin-left: 10px; }

.gloss-def { font-size: 15px; line-height: 1.9; margin-top: 6px; text-align: justify; }

.gloss-ref { color: var(--ink-faint); font-size: 12.5px; margin-top: 5px; }

/* ---------- 检索页 ---------- */

.search-form {
  display: flex;
  gap: 10px;
  margin: 12px 0 24px;
}

.search-input {
  flex: 1;
  font-family: var(--serif);
  font-size: 16px;
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  outline: none;
}

.search-input:focus { border-color: var(--accent); }

.search-btn {
  padding: 9px 26px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #f6f1e7;
  font-size: 15px;
  letter-spacing: 3px;
}

.search-result {
  padding: 12px 4px;
  border-bottom: 1px dashed var(--border-soft);
}

.search-result:last-child { border-bottom: none; }

.sr-title { font-size: 16px; }

.sr-title .vol { color: var(--ink-faint); font-size: 13px; margin-right: 8px; }

.sr-snippet {
  font-size: 14.5px;
  color: var(--ink-soft);
  margin-top: 4px;
  line-height: 1.8;
}

.sr-snippet mark { background: var(--mark-bg); color: var(--accent); padding: 0 2px; border-radius: 2px; }

.search-hint { color: var(--ink-faint); font-size: 15px; }

/* ---------- 关于页 ---------- */

.about-body p { text-align: justify; margin: 10px 0; }

.about-body h3 {
  font-family: var(--kai);
  font-size: 18px;
  letter-spacing: 3px;
  margin: 26px 0 6px;
}

/* ---------- 页脚 ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--panel);
  margin-top: 30px;
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 16px 26px;
  text-align: center;
  color: var(--ink-faint);
  font-size: 13px;
  letter-spacing: 1.5px;
}

.footer-inner p { margin: 4px 0; }

/* ---------- 响应式（H5 移动端适配） ---------- */

@media (max-width: 720px) {
  .header-inner { flex-wrap: wrap; gap: 6px; padding: 8px 12px; }
  .brand-name { font-size: 19px; letter-spacing: 2px; }
  .main-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }
  .main-nav::-webkit-scrollbar { display: none; }
  .main-nav a { white-space: nowrap; padding: 7px 10px; font-size: 14px; }
  .tools { margin-left: auto; }
  .tool-btn { min-width: 38px; height: 34px; }
  .app-main { padding: 16px 12px 56px; }
  .card { padding: 15px 14px; }
  .hero { padding: 30px 4px 22px; }
  .hero-meta { font-size: 13px; letter-spacing: 2px; }
  .hero-quote { font-size: 13.5px; letter-spacing: 1px; }
  .btn { padding: 10px 22px; font-size: 15px; }
  .mode-btn { padding: 7px 16px; min-height: 38px; }
  .entry-title { font-size: 26px; letter-spacing: 3px; }
  .seg-o { font-size: 1.02rem; } /* 基础字号上调至17px后，手机端补偿回原观感 */
  .volume-head { padding: 12px 14px; }
  .volume-desc, .volume-body { padding-left: 14px; }
  .seg-t { padding-left: 8px; }
  .gongan, .dharma { padding: 15px 14px; }
  .gongan-quote { font-size: 15.5px; }
  .pager { flex-direction: column; }
  .pager a { max-width: 100%; }
  .pager .next { text-align: left; margin-left: 0; }
  .search-input { font-size: 16px; padding: 10px 12px; } /* 16px 防 iOS 聚焦缩放 */
  .search-btn { padding: 11px 20px; }
  .search-form { gap: 8px; }
  .fold summary { min-height: 44px; }
  .fold-body { padding: 2px 12px 12px; }
  .footer-inner { font-size: 12px; }
}

@media (max-width: 420px) {
  .hero-title { font-size: 30px; letter-spacing: 9px; text-indent: 9px; }
  .brand-mark { width: 27px; height: 27px; font-size: 14px; }
  .entry-title { font-size: 23px; }
  .crumbs { font-size: 12.5px; }
  .seg-no { font-size: 13px; }
  .scripture-quote { padding: 6px 10px; font-size: 13.5px; }
  .interp-tag { letter-spacing: 1px; }
  .notes { font-size: 12.5px; }
  .entry-glossary .chip { font-size: 11px; }
}

/* ---------- 打印 ---------- */

@media print {
  .site-header, .site-footer, .tools, .mode-bar, .pager { display: none; }
  body { background: #fff; }
  .app-main { max-width: none; padding: 0; }
}