body {
  overflow: hidden;
}

/* ============ 顶部工具条 ============ */
.reader-toolbar {
  height: 3.4rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-strong);
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1rem;
}

.rt-back {
  color: var(--color-text);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.rt-back .rt-book {
  font-weight: 700;
}

.rt-back .rt-loc {
  color: var(--color-muted-text);
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rt-spacer {
  flex: 1;
}

.seg-group {
  display: inline-flex;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.seg-group button {
  border: none;
  background: var(--color-surface);
  padding: 0.34rem 0.95rem;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--color-muted-text);
}

.seg-group button[aria-pressed="true"] {
  background: var(--color-primary);
  color: #fdfbf3;
  font-weight: 700;
}

.rt-btn {
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 0.34rem 0.8rem;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--color-text);
  white-space: nowrap;
}

.rt-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-deep);
}

.rt-btn[aria-expanded="false"] {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary-deep);
}

/* ============ 三栏工作台 ============ */
.reader-body {
  display: grid;
  grid-template-columns: 14.5rem 1fr 1.05fr;
  height: calc(100dvh - 3.4rem);
}

body.toc-closed .reader-body {
  grid-template-columns: 1fr 1.05fr;
}

body.trans-collapsed .reader-body {
  grid-template-columns: 14.5rem 1fr;
}

body.toc-closed.trans-collapsed .reader-body {
  grid-template-columns: 1fr;
}

body.toc-closed .toc-aside {
  display: none;
}

body.trans-collapsed .trans-pane {
  display: none;
}

/* —— 目录侧栏 —— */
.toc-aside {
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
  overflow-y: auto;
  padding: 1rem 0.9rem;
}

.toc-aside h2 {
  font-size: 0.95rem;
  margin: 0 0 0.7rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.toc-aside h2 button {
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--color-muted-text);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
}

.toc-aside h2 button:hover {
  color: var(--color-primary-deep);
  background: var(--color-primary-soft);
}

.tocList {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.88rem;
}

.tocList a {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.4rem 0.55rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.tocList a:hover {
  background: var(--color-primary-soft);
}

.tocList .toc-page-no {
  color: var(--color-muted-text);
  font-size: 0.78rem;
}

.tocList .here a {
  background: var(--color-primary);
  color: #fdfbf3;
  font-weight: 700;
}

.tocList .here .toc-page-no {
  color: #e4efe8;
}

.toc-aside .toc-edit-note {
  margin: 1rem 0 0.6rem;
  font-size: 0.78rem;
  color: var(--color-muted-text);
}

/* —— 影印页（左） —— */
.folio-pane {
  overflow-y: auto;
  background: #efe9d8;
  display: flex;
  flex-direction: column;
}

.folio-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.6rem;
}

.folio-page {
  background: var(--color-paper-aged);
  border: 1px solid #cbbf9e;
  box-shadow: inset 0 0 0 3px #e7dec4, inset 0 0 0 4px #b7a980, var(--shadow-float);
  width: min(40rem, 100%);
  padding: 2.2rem 2rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.folio-cols {
  display: flex;
  flex-direction: row-reverse;
  justify-content: center;
  gap: 0;
}

.folio-col {
  writing-mode: vertical-rl;
  font-size: 1.06rem;
  letter-spacing: 0.26em;
  line-height: 2.5;
  color: var(--color-ink-block);
  margin: 0;
  max-height: 21rem;
}

.folio-center {
  border-top: 1px solid #b7a980;
  padding-top: 0.7rem;
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  font-size: 0.82rem;
  color: #8a7d5e;
  letter-spacing: 0.3em;
}

.folio-nav {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  padding: 0.65rem 1rem;
}

.folio-nav .folio-pos {
  font-size: 0.9rem;
  color: var(--color-muted-text);
}

.folio-zoom {
  position: absolute;
}

.zoom-hint {
  display: flex;
  gap: 0.4rem;
  margin-left: auto;
}

/* —— 折叠后的展开把手 —— */
.expand-tab {
  display: none;
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  border: 1px solid var(--color-primary);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  background: var(--color-primary);
  color: #fdfbf3;
  padding: 0.9rem 0.45rem;
  cursor: pointer;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  box-shadow: var(--shadow-float);
}

body.trans-collapsed .expand-tab {
  display: block;
}

/* ============ 右栏：转录 / 文字版 ============ */
.trans-pane {
  border-left: 1px solid var(--color-border-strong);
  background: var(--color-background);
  overflow-y: auto;
  padding: 1.1rem 1.2rem 2rem;
}

.tp-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
  position: sticky;
  top: -1.1rem;
  background: var(--color-background);
  padding: 0.3rem 0;
  z-index: 5;
}

.tp-tabs [role="tab"] {
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  border-radius: 999px;
  padding: 0.34rem 1.05rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-muted-text);
}

.tp-tabs [role="tab"][aria-selected="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fdfbf3;
  font-weight: 700;
}

.seg-card {
  padding: 0.95rem 1.05rem;
  margin-bottom: 0.9rem;
}

.seg-text {
  writing-mode: vertical-rl;
  max-height: 10.5rem;
  min-height: 6rem;
  background: var(--color-paper-aged);
  border: 1px solid var(--color-border-strong);
  box-shadow: inset 0 0 0 2px #e7dec4;
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  font-size: 1.02rem;
  letter-spacing: 0.24em;
  line-height: 2.3;
  color: var(--color-ink-block);
  overflow: auto;
  margin-bottom: 0.75rem;
}

/* 横排模式：文字版/预览切横排（影印页保持原书竖排） */
body.seg-h .seg-text {
  writing-mode: horizontal-tb;
  max-height: none;
  letter-spacing: 0.04em;
  line-height: 1.95;
}

.seg-meta {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.seg-no {
  color: var(--color-muted-text);
  font-size: 0.78rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 0.05rem 0.4rem;
}

.seg-user {
  font-weight: 700;
}

.seg-actions {
  margin-left: auto;
  display: flex;
  gap: 0.45rem;
}

.issue-card {
  margin-top: 0.75rem;
  border: 1px solid #ecd2ca;
  background: var(--color-accent-soft);
  border-radius: var(--radius-md);
  padding: 0.8rem 0.95rem;
  font-size: 0.88rem;
}

.issue-card .issue-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.issue-card .issue-head strong {
  color: var(--color-accent);
}

.issue-diff {
  margin: 0.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
}

.issue-diff .diff-row {
  display: flex;
  gap: 0.5rem;
}

.issue-diff .diff-tag {
  flex: none;
  font-size: 0.76rem;
  padding: 0.05rem 0.45rem;
  border-radius: var(--radius-sm);
  height: fit-content;
}

.diff-old .diff-tag {
  background: #eee9dc;
  color: #6f6653;
}

.diff-new .diff-tag {
  background: var(--color-primary-soft);
  color: var(--color-primary-deep);
}

.issue-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.55rem;
}

/* —— 我的转录（编辑态） —— */
.edit-card {
  padding: 1.05rem 1.15rem;
}

.edit-card h3 {
  margin: 0 0 0.15rem;
  font-size: 1.02rem;
}

.edit-card .edit-sub {
  margin: 0 0 0.8rem;
  font-size: 0.82rem;
  color: var(--color-muted-text);
}

.edit-card textarea {
  width: 100%;
  min-height: 7.5rem;
  resize: vertical;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 0.75rem 0.9rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
}

.edit-card textarea:focus {
  border-color: var(--color-primary);
  outline: 2px solid var(--color-primary-soft);
}

.preview-label {
  font-size: 0.8rem;
  color: var(--color-muted-text);
  margin: 0.7rem 0 0.4rem;
}

.edit-actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.9rem;
  align-items: center;
  flex-wrap: wrap;
}

.edit-actions .edit-tip {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--color-muted-text);
}

.draftItem {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  margin-bottom: 0.6rem;
  font-size: 0.88rem;
}

.draftItem .draft-loc {
  font-weight: 700;
}

.draftItem .draft-time {
  color: var(--color-muted-text);
  font-size: 0.78rem;
}

.draftItem .draft-ops {
  margin-left: auto;
  display: flex;
  gap: 0.4rem;
}

.missing-tip {
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  font-size: 0.88rem;
  color: var(--color-muted-text);
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.missing-tip .btn {
  margin-left: auto;
}

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
  .reader-body {
    grid-template-columns: 12rem 1fr 1fr;
  }

  .rt-back .rt-loc {
    display: none;
  }
}

@media (max-width: 860px) {
  .reader-body {
    display: flex;
    flex-direction: column;
    height: auto;
    overflow-y: auto;
  }

  body {
    overflow: auto;
  }

  .toc-aside {
    display: none;
  }

  .folio-pane {
    min-height: 26rem;
  }

  .trans-pane {
    border-left: none;
    border-top: 1px solid var(--color-border-strong);
  }

  .expand-tab {
    display: none !important;
  }

  .trans-pane {
    display: block !important;
  }
}
/* zydsh 补充：PDF.js 影印页适配 */
.pdf-loading { color: var(--color-muted-text); font-size:.9rem; }
.folio-stage canvas.pdf-canvas { display:block; background:#fff; box-shadow: var(--shadow-float); max-width:100%; }