/* ============================================================
   reader.css — 统一小说阅读 UI（小说 + 随心读共用，2026-10-29）
   PC：目录 | 正文 | 信息 三栏
   平板：正文 | 信息 两栏
   移动：单栏 + 左侧抽屉目录 + 底部工具条（safe-area 适配）
   主题：light / dark / sepia（CSS 变量驱动）
   ============================================================ */

:root {
  --rd-bg: #f6f4ef;
  --rd-surface: #ffffff;
  --rd-surface-2: #f1efe9;
  --rd-border: #e3ded3;
  --rd-text: #2b2a26;
  --rd-text-2: #6b675e;
  --rd-accent: #8a5a2b;
  --rd-accent-2: #b8874a;
  --rd-accent-soft: rgba(138, 90, 43, .10);
  --rd-shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 8px 24px rgba(0, 0, 0, .06);
  --rd-radius: 14px;

  --rd-font-size: 18px;
  --rd-line-height: 1.95;
  --rd-page-width: 720px;
  --rd-serif: "Songti SC", "SimSun", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --rd-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
             "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --rd-bar-h: 58px;
  --rd-drawer-w: 290px;
}

[data-theme="dark"] {
  --rd-bg: #16181c;
  --rd-surface: #1e2126;
  --rd-surface-2: #24282e;
  --rd-border: #333940;
  --rd-text: #e6e3dd;
  --rd-text-2: #9aa0a8;
  --rd-accent: #d9a066;
  --rd-accent-2: #e8bd8b;
  --rd-accent-soft: rgba(217, 160, 102, .14);
  --rd-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .35);
}

[data-theme="sepia"] {
  --rd-bg: #f2ead8;
  --rd-surface: #f8f2e3;
  --rd-surface-2: #ece2cd;
  --rd-border: #ded0b2;
  --rd-text: #43392c;
  --rd-text-2: #7c6f5c;
  --rd-accent: #8c6b3f;
  --rd-accent-2: #a98a55;
  --rd-accent-soft: rgba(140, 107, 63, .12);
}

/* ---------- 页面骨架 ---------- */
/* base.html 的 <main class="container"> 带了内联 max-width:960px，
   阅读页需要更宽的版式 → 用 :has() 精确覆盖（只影响本页，不动 base.html 共享文件） */
main.container:has(.reader-shell) {
  max-width: 1400px !important;
  margin: 0 auto !important;
  padding-left: 16px !important;
  padding-right: 16px !important;
}

/* 阅读页专属：隐藏全局站点导航、滚动公告、页脚（仅本模板生效，不动共享 base.html）。
   阅读器自带 .rd-topbar（含菜单/标题/进度）与 .rd-bottombar，无需全局 chrome。 */
body.reader-page #bulletinBanner { display: none !important; }
body.reader-page .site-footer-nav { display: none !important; }
body.reader-page main.container { max-width: 1400px !important; }

.reader-shell {
  max-width: 1400px !important;
  margin: 0 auto !important;
  padding: 0 16px 40px !important;
}

.rd-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  margin: 0 -16px 18px;
  background: color-mix(in srgb, var(--rd-bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--rd-border);
}

.rd-topbar .rd-title {  flex: 1;
  min-width: 0;
  font-family: var(--rd-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--rd-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rd-topbar .rd-sub {
  font-size: 12px;
  color: var(--rd-text-2);
  font-weight: 400;
  display: block;
  font-family: var(--rd-sans);
}

.rd-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: transparent;
}

/* 目录按钮：PC 用常驻侧栏，只在移动端出现 */
#rdMenuBtn { display: none; }
@media (max-width: 991.98px) {
  #rdMenuBtn { display: inline-flex; flex: none; padding: 6px 12px; }
}
.rd-progress > i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--rd-accent), var(--rd-accent-2));
  transition: width .25s ease;
}

/* ---------- 布局 ---------- */
.rd-layout {
  display: grid;
  grid-template-columns: var(--rd-drawer-w) minmax(0, 1fr) 300px;
  gap: 20px;
  align-items: start;
}

.rd-panel {
  background: var(--rd-surface);
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius);
  box-shadow: var(--rd-shadow);
  overflow: hidden;
}

.rd-panel-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--rd-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--rd-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.rd-panel-body { padding: 12px 14px; }

/* ---------- 目录 ---------- */
.rd-toc { position: sticky; top: 74px; max-height: calc(100vh - 96px); display: flex; flex-direction: column; }
.rd-toc-count { font-weight: 400; font-size: 12px; color: var(--rd-text-2); }
.rd-toc-search { padding: 8px 10px; border-bottom: 1px solid var(--rd-border); }
.rd-toc-search input {
  width: 100%; border: 1px solid var(--rd-border); background: var(--rd-surface-2);
  border-radius: 9px; padding: 7px 11px; color: var(--rd-text); font-size: 13px;
  font-family: var(--rd-sans);
}
.rd-toc-search input:focus { outline: 2px solid var(--rd-accent-soft); border-color: var(--rd-accent); }
.rd-toc-list { overflow-y: auto; padding: 6px 8px 12px; -webkit-overflow-scrolling: touch; }
.rd-toc-item {
  display: flex;
  gap: 10px;
  align-items: baseline;
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--rd-text-2);
  font-size: 14px;
  line-height: 1.5;
  padding: 8px 10px;
  border-radius: 9px;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.rd-toc-item:hover { background: var(--rd-surface-2); color: var(--rd-text); }
.rd-toc-item.active { background: var(--rd-accent-soft); color: var(--rd-accent); font-weight: 600; }
.rd-toc-item .no { font-variant-numeric: tabular-nums; opacity: .55; font-size: 12px; min-width: 24px; }
.rd-toc-item .t { flex: 1; word-break: break-all; }

/* ---------- 正文 ---------- */
.rd-reader {
  position: relative;
  background: var(--rd-surface);
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius);
  box-shadow: var(--rd-shadow);
  padding: 34px clamp(18px, 5vw, 54px) 60px;
}

.rd-book-head { text-align: center; padding-bottom: 22px; margin-bottom: 26px; border-bottom: 1px dashed var(--rd-border); }
.rd-book-head h1 { font-family: var(--rd-serif); font-size: clamp(22px, 4vw, 30px); margin: 0 0 8px; color: var(--rd-text); font-weight: 700; }
.rd-book-head .meta { color: var(--rd-text-2); font-size: 13px; }
.rd-book-head .tags { margin-top: 12px; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.rd-tag { font-size: 12px; padding: 3px 10px; border-radius: 999px; background: var(--rd-accent-soft); color: var(--rd-accent); }

.rd-chapter-title {
  font-family: var(--rd-serif);
  font-size: clamp(19px, 3vw, 23px);
  font-weight: 700;
  color: var(--rd-text);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rd-border);
}

.rd-content {
  font-family: var(--rd-serif);
  font-size: var(--rd-font-size);
  line-height: var(--rd-line-height);
  color: var(--rd-text);
  letter-spacing: .01em;
  max-width: var(--rd-page-width);
  margin: 0 auto;
  word-break: break-word;
  white-space: pre-wrap;
}
.rd-content p { margin: 0 0 1.1em; text-indent: 2em; }
.rd-content p.no-indent { text-indent: 0; }

.rd-loadmore { display: flex; justify-content: center; margin-top: 26px; }

/* ---------- 右侧信息面板 ---------- */
.rd-side { position: sticky; top: 74px; }
.rd-info-row { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; padding: 7px 0; border-bottom: 1px dashed var(--rd-border); }
.rd-info-row:last-child { border-bottom: 0; }
.rd-info-row .k { color: var(--rd-text-2); flex: none; }
.rd-info-row .v { color: var(--rd-text); text-align: right; word-break: break-all; }

.rd-tools { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 12px; }
.rd-btn {
  border: 1px solid var(--rd-border);
  background: var(--rd-surface-2);
  color: var(--rd-text);
  border-radius: 10px;
  padding: 9px 10px;
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--rd-sans);
}
.rd-btn:hover { border-color: var(--rd-accent); color: var(--rd-accent); }
.rd-btn.active { background: var(--rd-accent); border-color: var(--rd-accent); color: #fff; }
.rd-btn.primary { background: var(--rd-accent); border-color: var(--rd-accent); color: #fff; }
.rd-btn.primary:hover { background: var(--rd-accent-2); color: #fff; }
.rd-btn:disabled { opacity: .45; cursor: not-allowed; }

/* ---------- 底部翻页 ---------- */
.rd-pager { display: flex; gap: 10px; margin-top: 34px; }
.rd-pager .rd-btn { flex: 1; padding: 12px; }

/* ---------- 移动端底部工具条 ---------- */
.rd-bottombar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 45;
  background: color-mix(in srgb, var(--rd-surface) 94%, transparent);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--rd-border);
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px));
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
}
.rd-bottombar button {
  border: 0; background: transparent; color: var(--rd-text-2);
  font-size: 12px; padding: 4px 2px; cursor: pointer; display: flex;
  flex-direction: column; align-items: center; gap: 3px; font-family: var(--rd-sans);
}
.rd-bottombar button .ic { font-size: 18px; line-height: 1; }
.rd-bottombar button.active { color: var(--rd-accent); }

/* ---------- 抽屉（移动端目录） ---------- */
.rd-drawer-mask {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, .42);
  z-index: 60;
}
.rd-drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: min(86vw, var(--rd-drawer-w));
  background: var(--rd-surface);
  z-index: 61;
  transform: translateX(-102%);
  transition: transform .25s cubic-bezier(.4, 0, .2, 1);
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 40px rgba(0, 0, 0, .3);
  padding-top: env(safe-area-inset-top, 0px);
}
.rd-drawer.open { transform: translateX(0); }
.rd-drawer-mask.show { display: block; }

/* ---------- 发现模式（随心读首页） ---------- */
/* Hero：纸质渐变横幅，搜索与排序嵌入其中 */
.rd-hero {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  padding: 34px 34px 30px;
  margin-bottom: 18px;
  background:
    radial-gradient(1200px 300px at 85% -40%, rgba(184, 135, 74, .18), transparent 60%),
    radial-gradient(900px 260px at 8% 120%, rgba(138, 90, 43, .12), transparent 55%),
    linear-gradient(160deg, #fbf8f0 0%, #f3ecdd 100%);
  border: 1px solid #e6dcc6;
  box-shadow: var(--rd-shadow);
}
.rd-hero-t {
  font-family: var(--rd-serif);
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  letter-spacing: .12em;
  color: #3a2f1f;
}
.rd-hero-s { margin-top: 6px; font-size: 13px; color: #8a7d63; letter-spacing: .04em; }
.rd-hero-deco {
  position: absolute;
  right: 18px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--rd-serif);
  font-size: 150px;
  line-height: 1;
  font-weight: 700;
  color: rgba(138, 90, 43, .07);
  user-select: none;
  pointer-events: none;
}
.rd-hero .rd-discover-head { margin: 18px 0 0; position: relative; z-index: 1; }
.rd-hero .rd-search { max-width: 560px; box-shadow: 0 2px 10px rgba(90, 70, 40, .08); }
.rd-hero .rd-btn { background: rgba(255, 255, 255, .75); backdrop-filter: blur(4px); }

.rd-discover-head { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.rd-search {
  flex: 1; min-width: 220px;
  border: 1px solid var(--rd-border); background: var(--rd-surface);
  border-radius: 12px; padding: 11px 16px; color: var(--rd-text); font-size: 14px;
  font-family: var(--rd-sans);
  transition: border-color .15s, box-shadow .15s;
}
.rd-search:focus { outline: 2px solid var(--rd-accent-soft); border-color: var(--rd-accent); }
.rd-chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.rd-chip {
  border: 1px solid var(--rd-border); background: var(--rd-surface); color: var(--rd-text-2);
  border-radius: 999px; padding: 5px 14px; font-size: 13px; cursor: pointer; font-family: var(--rd-sans);
  transition: all .15s;
}
.rd-chip:hover { border-color: var(--rd-accent); color: var(--rd-accent); }
.rd-chip.active { background: var(--rd-accent); border-color: var(--rd-accent); color: #fff; box-shadow: 0 2px 8px rgba(138, 90, 43, .28); }

.rd-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.rd-card {
  background: var(--rd-surface); border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius); padding: 14px 14px 12px; cursor: pointer;
  transition: transform .18s, box-shadow .18s, border-color .18s;
  box-shadow: var(--rd-shadow);
  display: flex;
  flex-direction: column;
}
.rd-card:hover { transform: translateY(-3px); border-color: var(--rd-accent-2); box-shadow: 0 10px 26px rgba(60, 45, 20, .14); }
/* 卡片改为「摘录优先」文本版式：去掉书封色块，摘录当主角 */
.rd-card { min-height: 156px; }
.rd-card h3 {
  margin: 0 0 7px; font-size: 16px; line-height: 1.5; font-family: var(--rd-serif);
  color: var(--rd-text); font-weight: 700;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.rd-card:hover h3 { color: var(--rd-accent); }
.rd-card .ex {
  margin-top: 2px; flex: 1 1 auto;
  font-size: 13.5px; line-height: 1.72; color: var(--rd-text-2);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  padding: 8px 10px; border-left: 3px solid var(--rd-accent-soft, #d8c9a8);
  background: rgba(120, 95, 55, .05); border-radius: 0 7px 7px 0;
}
.rd-card .ex-empty {
  color: var(--rd-text-2); opacity: .5; font-style: italic;
  background: none; border-left-color: var(--rd-border);
}
.rd-card .m { margin-top: auto; padding-top: 10px; font-size: 12px; color: var(--rd-text-2); display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.rd-card .m .dot { opacity: .4; }

.rd-section-title {
  margin: 30px 0 14px; font-size: 16px; font-weight: 700; color: var(--rd-text);
  display: flex; align-items: center; gap: 8px; letter-spacing: .02em;
}
.rd-section-title::before { content: ""; width: 4px; height: 16px; background: linear-gradient(180deg, var(--rd-accent), var(--rd-accent-2)); border-radius: 2px; }

/* 期次文章区：默认隐藏，仅当用户点开某期次时才展开（避免无内容时一整屏空白） */
.rd-issue-section[hidden] { display: none !important; }

/* 发现页期次墙：固定列数，让期次数量正好铺满，避免末行右侧大片留白 */
.reader-shell #rdIssues .ep-issues-grid { grid-template-columns: repeat(5, 1fr); gap: 16px; }
@media (max-width: 1180px) { .reader-shell #rdIssues .ep-issues-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 900px)  { .reader-shell #rdIssues .ep-issues-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 620px)  { .reader-shell #rdIssues .ep-issues-grid { grid-template-columns: repeat(2, 1fr); } }

/* 无版面数据的期次：与缩略图同宽同高的占位卡，保持墙体卡片风格统一 */
.reader-shell .ep-canvas--fallback {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  background: radial-gradient(220px 120px at 50% 0%, rgba(160,35,35,.05), transparent 70%),
    repeating-linear-gradient(0deg, rgba(0,0,0,.015) 0 1px, transparent 1px 8px), #f6f1e2;
}
.reader-shell .ep-canvas--fallback .ep-fallback-name { font-size: 22px; }
.reader-shell .ep-canvas--fallback .ep-fallback-note { border-top: 1px dashed #d8cba8; padding-top: 8px; }

.rd-issue {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  background: var(--rd-surface); border: 1px solid var(--rd-border);
  border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; cursor: pointer;
}
.rd-issue .t { font-family: var(--rd-serif); font-size: 15px; color: var(--rd-text); }
.rd-issue .d { font-size: 12px; color: var(--rd-text-2); }

.rd-empty { text-align: center; color: var(--rd-text-2); padding: 40px 10px; font-size: 14px; }

.rd-toast {
  position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%) translateY(12px);
  background: rgba(24, 24, 24, .92); color: #fff; padding: 9px 16px; border-radius: 10px;
  font-size: 13px; opacity: 0; pointer-events: none; transition: all .22s; z-index: 90;
  max-width: 80vw; text-align: center;
}
.rd-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 加载/解析覆盖层（不销毁正文 DOM） ---------- */
.rd-loading {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  padding: 40px 16px;
  background: color-mix(in srgb, var(--rd-surface) 92%, transparent);
  border-radius: inherit;
}
.rd-loading .rd-empty { margin: 0; }

.rd-spinner {
  width: 22px; height: 22px; border: 2px solid var(--rd-border);
  border-top-color: var(--rd-accent); border-radius: 50%;
  animation: rd-spin .7s linear infinite; margin: 30px auto;
}
@keyframes rd-spin { to { transform: rotate(360deg); } }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1199.98px) {
  .rd-layout { grid-template-columns: var(--rd-drawer-w) minmax(0, 1fr); }
  .rd-side { display: none; }
}

@media (max-width: 991.98px) {
  .rd-layout { grid-template-columns: minmax(0, 1fr); }
  .rd-toc { display: none; }
  .rd-reader { padding: 26px 20px 90px; }
  .rd-bottombar { display: grid; }
  .reader-shell { padding-bottom: 96px !important; }
  .rd-topbar { margin-bottom: 14px; }
}

@media (max-width: 575.98px) {
  :root { --rd-font-size: 17px; --rd-line-height: 1.9; }
  .rd-reader { padding: 20px 16px 92px; border-radius: 12px; }
  .rd-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .rd-card { padding: 10px 10px 9px; min-height: 0; }
  .rd-card h3 { font-size: 14px; }
  .rd-hero { padding: 22px 18px 20px; border-radius: 14px; }
  .rd-hero-deco { font-size: 90px; opacity: .7; }
  .rd-topbar { padding: 8px 12px; }
  .rd-topbar .rd-title { font-size: 15px; }
  .rd-tools { grid-template-columns: 1fr; }
}

@media (max-width: 374.98px) {
  .rd-grid { grid-template-columns: 1fr; }
}

/* 触摸设备：去掉 hover 位移 */
@media (hover: none) {
  .rd-card:hover { transform: none; }
}