:root {
  --page-bg: #f4efe6;
  --surface: #fbf8f2;
  --surface-strong: #f8f2e9;
  --panel-border: #e4dacb;
  --panel-border-strong: #d6cab8;
  --text-primary: #2f2a25;
  --text-secondary: #6d655d;
  --text-muted: #8a8178;
  --accent: #58728a;
  --accent-soft: #e7eef5;
  --accent-strong: #2f5168;
  --selection: #dbe7f1;
  --shadow-soft: 0 10px 30px rgba(60, 48, 33, 0.05);
  --sidebar-width: 256px;
  --detail-width: 320px;
  --radius: 16px;
  --content-max-width: 860px;
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: linear-gradient(180deg, #f6f1e8 0%, #efe7da 100%);
  color: var(--text-primary);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

body {
  min-height: 100vh;
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  height: 100vh;
  padding: 1.2rem 1rem;
  background: rgba(250, 247, 241, 0.95);
  border-right: 1px solid var(--panel-border);
  overflow-y: auto;
  scrollbar-width: none;
  z-index: 20;
}

.sidebar::-webkit-scrollbar {
  display: none;
}

.brand {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--panel-border);
}

.brand-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.brand-logo {
  display: block;
  width: 3rem;
  height: auto;
  flex: 0 0 auto;
}

.brand-title,
.brand-version,
.sidebar-section-label,
.detail-heading-meta,
.chapter-kicker,
.remedy-tag {
  margin: 0;
}

.brand-title {
  font-size: 1.2rem;
  font-weight: 700;
}

.brand-version,
.sidebar-section-label,
.eyebrow,
.chapter-kicker,
.detail-heading-meta,
.remedy-tag,
.fact-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.sidebar-nav,
.sidebar-actions,
.nav-group,
.nav-group-items,
.subnav-group,
.subnav-items,
.chapter-list,
.alpha-index,
.remedy-facts,
.reference-list,
.remedy-detail,
.login-form {
  display: flex;
  flex-direction: column;
}

.sidebar-nav {
  gap: 0.25rem;
}

.sidebar-account {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--panel-border);
}

.sidebar-account-name {
  margin: 0.2rem 0 0;
  color: var(--text-secondary);
  font-weight: 600;
}

.sidebar-actions {
  flex-direction: row;
  gap: 0.45rem;
  margin-top: 0.35rem;
}

.sidebar-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid var(--panel-border-strong);
  border-radius: 12px;
  background: rgba(255, 252, 247, 0.92);
  color: var(--text-secondary);
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.sidebar-action svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sidebar-action:hover,
.sidebar-action:focus-visible {
  background: rgba(88, 114, 138, 0.08);
  color: var(--accent-strong);
}

.sidebar-action.is-active {
  background: var(--selection);
  color: var(--accent-strong);
  border-color: rgba(88, 114, 138, 0.28);
}

.search-input,
.search-select {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--panel-border-strong);
  border-radius: 12px;
  background: rgba(255, 252, 247, 0.92);
  color: var(--text-primary);
}

.search-form .search-input {
  grid-column: 1;
  grid-row: 1;
}

.search-form {
  display: grid;
  grid-template-columns: minmax(10rem, 20rem) auto;
  align-items: center;
  justify-content: start;
  gap: 0.55rem 0.7rem;
  margin-bottom: 1.5rem;
}

.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-shell {
  width: min(100%, 28rem);
}

.login-card {
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  background: rgba(251, 248, 242, 0.96);
  box-shadow: var(--shadow-soft);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--panel-border);
}

.login-copy .workspace-title {
  margin-bottom: 0.35rem;
}

.login-form {
  gap: 0.7rem;
}

.login-button {
  margin-top: 0.35rem;
}

.login-alert {
  border-color: rgba(182, 84, 84, 0.24);
}

.search-filter-group {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0;
  border: 0;
}

.search-filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.9rem;
}

.search-check {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
}

.search-check input {
  margin: 0;
}

.search-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.search-button {
  grid-column: 2;
  grid-row: 1;
  width: fit-content;
  padding: 0.68rem 1rem;
  border: 1px solid var(--panel-border-strong);
  border-radius: 999px;
  background: rgba(255, 252, 247, 0.92);
  color: var(--text-primary);
}

.search-results {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 252, 247, 0.9);
  box-shadow: var(--shadow-soft);
}

.search-result:nth-child(even) {
  background: rgba(88, 114, 138, 0.055);
}

.search-result td {
  padding: 0.32rem 0.55rem;
  border-bottom: 1px solid rgba(88, 114, 138, 0.12);
  vertical-align: middle;
}

.search-result:last-child td {
  border-bottom: 0;
}

.search-result-title-cell {
  width: 16%;
}

.search-result-snippet-cell {
  width: 84%;
}

.search-result-title {
  display: block;
  color: var(--text-primary);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: none;
}

.search-result-title:hover,
.search-result-title:focus-visible {
  color: var(--accent-strong);
  text-decoration: underline;
}

.search-result-snippet {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.25;
  display: -webkit-box;
  max-height: 3.75em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: normal;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

@media (max-width: 480px) {
  .search-form {
    grid-template-columns: 1fr;
  }

  .search-button {
    width: 100%;
  }
  .search-results,
  .search-results tbody,
  .search-result,
  .search-result td {
    display: block;
    width: 100%;
  }

  .search-result-title,
  .search-result-snippet {
    display: block;
    white-space: normal;
    -webkit-line-clamp: unset;
  }

  .search-result-title-cell {
    padding-bottom: 0.1rem;
  }

  .search-result-snippet-cell {
    padding-top: 0;
  }
}

.stock-form {
  display: grid;
  gap: 1rem;
}

.stock-admin-form {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) minmax(6rem, 10rem) auto;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.stock-admin-message {
  margin-bottom: 1rem;
}

.stock-admin-message--error {
  border-color: rgba(182, 84, 84, 0.24);
}

.stock-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.stock-toolbar--stacked {
  align-items: flex-start;
}

.stock-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
}

.stock-filter-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.stock-filter-button {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--panel-border-strong);
  border-radius: 999px;
  background: rgba(255, 252, 247, 0.92);
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.stock-filter-button:hover,
.stock-filter-button:focus-visible {
  background: rgba(88, 114, 138, 0.08);
  color: var(--accent-strong);
}

.stock-filter-button.is-active {
  background: var(--selection);
  color: var(--accent-strong);
  border-color: rgba(88, 114, 138, 0.28);
}

.stock-save-status {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.stock-save-status[data-state="saving"] {
  color: var(--accent-strong);
}

.stock-save-status[data-state="saved"] {
  color: #4d6d48;
}

.stock-save-status[data-state="error"] {
  color: #b65454;
}

.stock-table-wrap {
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  background: rgba(255, 252, 247, 0.9);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.stock-table {
  width: 100%;
  border-collapse: collapse;
}

.stock-table tbody tr:nth-child(even) {
  background: rgba(88, 114, 138, 0.055);
}

.stock-table th,
.stock-table td {
  padding: 0.48rem 0.7rem;
  border-bottom: 1px solid var(--panel-border);
  text-align: left;
  vertical-align: middle;
}

.stock-table tr:last-child td {
  border-bottom: 0;
}

.stock-table th {
  color: var(--text-muted);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(248, 242, 233, 0.85);
}

.stock-input {
  width: 100%;
  min-width: 7rem;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--panel-border-strong);
  border-radius: 10px;
  background: rgba(255, 252, 247, 0.92);
  color: var(--text-primary);
}

.stock-input:focus,
.stock-checkbox:focus {
  outline: 2px solid rgba(88, 114, 138, 0.22);
  outline-offset: 1px;
}

.stock-checkbox {
  width: 1rem;
  height: 1rem;
}

.stock-abbrev {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.76rem;
}

.stock-row-actions {
  width: 1%;
  white-space: nowrap;
}

.stock-delete-button {
  padding: 0.28rem 0.55rem;
  border: 1px solid rgba(182, 84, 84, 0.28);
  border-radius: 8px;
  background: rgba(255, 252, 247, 0.92);
  color: #9b3d3d;
}

.stock-delete-button:hover,
.stock-delete-button:focus-visible {
  background: rgba(182, 84, 84, 0.08);
}

mark {
  background: #f4e0a7;
  padding: 0 0.15rem;
}

.nav-group {
  gap: 0.1rem;
}

.nav-group-toggle,
.nav-item,
.chapter-link,
.alpha-link,
.panel-toggle {
  transition: background var(--transition), color var(--transition);
}

.nav-group-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.28rem 0.45rem 0.28rem 0;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  text-align: left;
}

.nav-group-items {
  gap: 0.08rem;
  padding-left: 0rem;
  margin-left: 0rem;
}

.subnav-group {
  gap: 0.05rem;
}

.subnav-items {
  gap: 0.04rem;
  padding-left: 0.55rem;
}

.nav-group[data-collapsed="true"] .nav-group-items {
  display: none;
}

.subnav-group[data-collapsed="true"] .subnav-items {
  display: none;
}

.nav-item,
.subnav-toggle,
.subnav-item {
  display: block;
  width: 100%;
  padding: 0.15rem 0.45rem;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  text-align: left;
  text-decoration: none;
}

.subnav-toggle,
.subnav-item {
  font-size: 0.92rem;
}

.subnav-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-item:hover,
.nav-group-toggle:hover,
.subnav-toggle:hover,
.subnav-item:hover,
.chapter-link:hover,
.alpha-link:hover,
.panel-toggle:hover {
  background: rgba(88, 114, 138, 0.08);
}

.nav-item.is-active {
  background: var(--selection);
  color: var(--accent-strong);
  font-weight: 700;
}

.subnav-item.is-active {
  background: rgba(88, 114, 138, 0.12);
  color: var(--accent-strong);
  font-weight: 700;
}

.workspace {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.workspace-mobile-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1rem 0;
}

.panel-toggle {
  display: none;
  border: 1px solid var(--panel-border-strong);
  border-radius: 999px;
  background: rgba(251, 248, 242, 0.95);
  color: var(--text-secondary);
  padding: 0.6rem 0.95rem;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--detail-width);
  min-height: 100vh;
}

.workspace-grid--repertory {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.workspace-grid--search {
  grid-template-columns: minmax(0, 1fr);
}

.workspace-grid--search .detail-panel {
  display: none;
}

.workspace-grid--pdf {
  grid-template-columns: minmax(0, 1fr) 180px;
}

.workspace-grid--epub {
  grid-template-columns: minmax(0, 1fr) 280px;
}

.workspace-grid--pdf .content-panel,
.workspace-grid--pdf .content-scroll,
.workspace-grid--pdf #content-root,
.pdf-viewer,
.workspace-grid--epub .content-panel,
.workspace-grid--epub .content-scroll,
.workspace-grid--epub #content-root,
.epub-viewer {
  display: contents;
}

.workspace-grid--pdf .content-heading,
.workspace-grid--epub .content-heading {
  display: none;
}

.detail-panel {
  border-left: 1px solid var(--panel-border);
  background: rgba(248, 244, 236, 0.92);
}

.content-scroll,
.detail-scroll {
  height: 100vh;
  overflow-y: auto;
}

.content-scroll {
  scrollbar-width: none;
}

.content-scroll::-webkit-scrollbar {
  display: none;
}

.content-scroll {
  padding: 0.5rem 2rem 3rem;
}

.detail-scroll {
  padding: 2rem 1.25rem 2rem;
}

.detail-panel--book .detail-scroll {
  display: flex;
  padding: 0;
  overflow: hidden;
}

.detail-panel--book #detail-root {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
}

.book-detail-panel {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

#content-root {
  max-width: var(--content-max-width);
}

.workspace-grid--repertory #content-root {
  max-width: none;
}

.workspace-grid--search #content-root {
  max-width: none;
}

.content-heading {
  margin-bottom: 0rem;
}

.content-panel h2 {
  margin-top: 0rem;
  margin-bottom: 0rem;
  padding-top: 1rem;
  padding-bottom: 0rem;
}

.content-panel h3 {
  margin-top: 0rem;
  margin-bottom: 0rem;
  padding-top: 0.5rem;
  padding-bottom: 0rem;
}

.content-panel p {
  margin-top: 0rem;
  margin-bottom: 0.5rem;
  padding-top: 0rem;
  padding-bottom: 0rem;
}

.workspace-grid--book-health .book-float-image {
  float: right;
  clear: right;
  width: min(34%, 16rem);
  margin: 0.35rem 0 1rem 1.5rem;
  text-align: right;
}

.workspace-grid--book-health .book-float-image img {
  width: 100%;
  height: auto;
  max-height: 24rem;
  object-fit: contain;
}

.workspace-grid--repertory .content-panel p.repertory-subline {
  padding-left: 1.7rem;
}

.content-panel ul {
  margin-top: 0.2rem;
  margin-bottom: 0.2rem;
  padding-top: 0rem;
  padding-bottom: 0rem;
}

.workspace-title {
  margin: 0.15rem 0 0.75rem;
  font-size: clamp(1.8rem, 2.4vw, 2.4rem);
  line-height: 1.12;
  font-weight: 700;
}

.content-heading h2,
.detail-heading h3,
.section-block h3,
.remedy-detail h3,
.rubric-entry h3 {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--text-primary);
}

.content-heading h2 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.05;
}

.content-summary,
.section-block p,
.detail-copy,
.detail-card p,
.rubric-lead {
  color: var(--text-secondary);
  line-height: 1.65;
  font-size: 1.08rem;
}

.section-block,
.rubric-entry {
  padding: 1.25rem 0 1.8rem;
  border-top: 1px solid var(--panel-border);
}

.section-block {
  scroll-margin-top: 1rem;
}

.section-block:first-of-type,
.rubric-entry:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.section-block h3 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
}

.section-block p,
.rubric-entry p {
  margin: 0 0 1rem;
}

.detail-heading {
  margin-bottom: 0.8rem;
}

.detail-heading h3,
.remedy-detail h3 {
  margin: 0.15rem 0 0.25rem;
  font-size: 1.4rem;
}

.detail-card {
  padding: 1rem;
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  background: rgba(255, 252, 247, 0.9);
  box-shadow: var(--shadow-soft);
}

.chapter-list,
.remedy-facts,
.reference-list,
.remedy-detail {
  gap: 0.35rem;
}

.chapter-list--scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 0.35rem 1.25rem 2rem;
}

.chapter-link,
.alpha-link {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.45rem;
  width: 100%;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text-secondary);
  padding: 0rem 0.2rem;
  text-align: left;
  text-decoration: none;
}

.chapter-link.is-active,
.alpha-link.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
}

.alpha-index {
  margin-bottom: 0.9rem;
}

.alpha-index--toc {
  margin: 0;
  padding: 0.5rem 1.25rem 0.5rem;
  background: rgba(248, 244, 236, 0.96);
  border-bottom: 1px solid var(--panel-border);
  flex: 0 0 auto;
}

.alpha-row,
.remedy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.18rem;
}

.alpha-link {
  width: auto;
}

.alpha-link {
  min-width: 1.2rem;
  justify-content: center;
}

.rubric-entry h3 {
  margin: 0 0 0.4rem;
  font-size: 1.45rem;
}

.remedy-links {
  gap: 0.15rem 0.35rem;
  margin-top: 0.4rem;
}

.remedy-link {
  display: inline;
  color: #cf5b5b;
  text-decoration: none;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  font-size: 1em;
  line-height: inherit;
}

.remedy-link:hover,
.remedy-link:focus-visible {
  color: #b54a4a;
  text-decoration: underline;
}

.remedy-link.is-active {
  color: #b54a4a;
  font-weight: 600;
}

.remedy-detail {
  gap: 0.65rem;
}

.detail-panel h2,
.detail-panel h3,
.detail-panel h4,
.detail-panel h5 {
  margin-top: 0rem;
  margin-bottom: 0rem;
  line-height: 1.15;
}

.detail-panel p,
.detail-panel ul,
.detail-panel ol {
  margin-top: 0rem;
  margin-bottom: 0rem;
}

.detail-panel li {
  margin-bottom: 0.2rem;
}

.fact-row {
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--panel-border);
}

.fact-label {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.82rem;
}

.empty-state {
  padding: 1rem;
  border: 1px dashed var(--panel-border-strong);
  border-radius: 14px;
  color: var(--text-secondary);
}

.pdf-thumbnail-panel {
  height: 100vh;
  min-height: 0;
  overflow-y: auto;
  background: rgba(248, 244, 236, 0.92);
}

.epub-toc-panel {
  height: 100vh;
  min-height: 0;
  overflow-y: auto;
  background: rgba(248, 244, 236, 0.92);
  scrollbar-width: none;
}

.epub-toc-panel::-webkit-scrollbar {
  display: none;
}

.pdf-panel-heading,
.epub-panel-heading {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--panel-border);
  background: rgba(248, 244, 236, 0.98);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.epub-page-viewer {
  height: 100vh;
  min-width: 0;
  overflow: hidden;
  padding: 1rem 1.5rem 2rem;
}

.epub-reader-status {
  position: sticky;
  top: 0;
  z-index: 2;
  width: fit-content;
  max-width: min(100%, 38rem);
  margin: 0 auto 0.75rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: rgba(251, 248, 242, 0.96);
  color: var(--text-secondary);
  font-size: 0.9rem;
  box-shadow: var(--shadow-soft);
}

.epub-reader-status[hidden] {
  display: none;
}

.epub-reader {
  width: min(100%, 58rem);
  height: calc(100vh - 3rem);
  margin: 0 auto;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: rgba(255, 252, 247, 0.94);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.epub-toc {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.65rem;
}

.epub-toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.epub-toc-list--nested {
  padding-left: 0.65rem;
}

.epub-toc-link {
  display: block;
  width: 100%;
  padding: 0.28rem 0.45rem;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  text-align: left;
  text-decoration: none;
}

.epub-toc-link:hover,
.epub-toc-link:focus-visible {
  background: rgba(88, 114, 138, 0.08);
}

.epub-toc-link.is-active {
  background: var(--selection);
  color: var(--accent-strong);
  font-weight: 700;
}

.epub-toc-empty {
  margin: 0;
  padding: 0.65rem;
  color: var(--text-secondary);
}

.pdf-page-viewer {
  height: 100vh;
  min-width: 0;
  overflow: auto;
  padding: 1rem 1.5rem 2rem;
  scrollbar-width: none;
}

.pdf-page-viewer::-webkit-scrollbar {
  display: none;
}

.pdf-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  margin: 0 auto 1rem;
  padding: 0.45rem;
  width: fit-content;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: rgba(251, 248, 242, 0.96);
  box-shadow: var(--shadow-soft);
}

.pdf-nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--panel-border-strong);
  border-radius: 8px;
  background: rgba(255, 252, 247, 0.92);
  color: var(--text-secondary);
}

.pdf-nav-button:disabled {
  cursor: default;
  opacity: 0.45;
}

.pdf-page-status {
  min-width: 7.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: center;
}

#pdf-page-canvas {
  display: block;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 10px 30px rgba(60, 48, 33, 0.16);
}

.detail-panel--pdf .detail-scroll {
  padding: 0;
  overflow: hidden;
}

.detail-panel--pdf #detail-root {
  min-height: 100vh;
}

.detail-panel--epub .detail-scroll {
  padding: 0;
  overflow: hidden;
}

.detail-panel--epub #detail-root {
  min-height: 100vh;
}

.pdf-thumbnail-panel {
  border-left: 0;
  scrollbar-width: none;
}

.pdf-thumbnail-panel::-webkit-scrollbar {
  display: none;
}

.pdf-thumbnails {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.65rem;
}

.pdf-thumbnail {
  display: grid;
  justify-items: center;
  gap: 0.35rem;
  width: 100%;
  padding: 0.5rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
}

.pdf-thumbnail:hover,
.pdf-thumbnail:focus-visible {
  background: rgba(88, 114, 138, 0.08);
}

.pdf-thumbnail.is-active {
  border-color: rgba(88, 114, 138, 0.28);
  background: var(--selection);
  color: var(--accent-strong);
  font-weight: 700;
}

.pdf-thumbnail canvas {
  display: block;
  max-width: 100%;
  background: #fff;
  box-shadow: 0 4px 14px rgba(60, 48, 33, 0.13);
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(88vw, 320px);
    transform: translateX(-100%);
    transition: transform var(--transition);
    box-shadow: var(--shadow-soft);
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .workspace-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .workspace-grid--pdf {
    grid-template-columns: minmax(0, 1fr);
  }

  .workspace-grid--epub {
    grid-template-columns: minmax(0, 1fr);
  }

  .workspace-grid--pdf .content-panel,
  .workspace-grid--pdf .content-scroll,
  .workspace-grid--pdf #content-root,
  .pdf-viewer,
  .workspace-grid--epub .content-panel,
  .workspace-grid--epub .content-scroll,
  .workspace-grid--epub #content-root,
  .epub-viewer {
    display: block;
  }

  .pdf-thumbnail-panel,
  .pdf-page-viewer,
  .epub-toc-panel,
  .epub-page-viewer {
    height: auto;
    max-height: none;
  }

  .detail-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(88vw, 360px);
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: var(--shadow-soft);
    z-index: 18;
  }

  .detail-panel.is-open {
    transform: translateX(0);
  }

  .workspace-grid--pdf .detail-panel {
    position: static;
    width: auto;
    transform: none;
    box-shadow: none;
  }

  .workspace-grid--epub .detail-panel {
    position: static;
    width: auto;
    transform: none;
    box-shadow: none;
  }

  .panel-toggle {
    display: inline-flex;
  }

  .content-scroll,
  .detail-scroll {
    height: 100vh;
  }
}

@media (max-width: 720px) {

  .stock-toolbar,
  .stock-controls,
  .stock-admin-form {
    flex-direction: column;
    align-items: stretch;
  }

  .stock-admin-form {
    display: flex;
  }

  .content-scroll {
    padding: 1.25rem 1.25rem 2rem;
  }

  .workspace-grid--book-health .book-float-image {
    float: none;
    clear: none;
    width: min(100%, 18rem);
    margin: 0.5rem 0 0.85rem;
    text-align: left;
  }

  .content-heading h2 {
    font-size: 2rem;
  }

  .section-block h3,
  .remedy-detail h3,
  .rubric-entry h3 {
    font-size: 1.45rem;
  }

  .content-summary,
  .section-block p,
  .detail-copy,
  .detail-card p,
  .rubric-lead {
    font-size: 1rem;
  }

  .workspace-mobile-actions {
    padding: 0.8rem 0.8rem 0;
  }
}