:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", "Menlo", monospace;
  --header-h: 48px;
  --surface: #1a1c1e;
  --surface-variant: #282a2d;
  --surface-container: #1e2022;
  --on-surface: #e2e2e6;
  --on-surface-variant: #c4c6cf;
  --primary: #8ab4f8;
  --on-primary: #003258;
  --primary-container: #004a7c;
  --on-primary-container: #d1e4ff;
  --secondary: #bcc7db;
  --on-secondary: #263141;
  --secondary-container: #3c4758;
  --on-secondary-container: #d8e3f8;
  --outline: #8d9099;
  --outline-variant: #43474e;
  --error: #f2b8b5;
  --on-error: #601410;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.5);
  --transition: 150ms ease;
  --sidebar-w: 280px;
  --sidebar-expanded-w: max(360px, min(50vw, 760px));
  color-scheme: dark;
}

body.light {
  --surface: #fdfbff;
  --surface-variant: #f0eff4;
  --surface-container: #f5f3f7;
  --on-surface: #1a1c1e;
  --on-surface-variant: #44474e;
  --primary: #1a6db5;
  --on-primary: #ffffff;
  --primary-container: #d1e4ff;
  --on-primary-container: #001d36;
  --secondary: #525f70;
  --on-secondary: #ffffff;
  --secondary-container: #d8e3f8;
  --on-secondary-container: #121c29;
  --outline: #74777f;
  --outline-variant: #c4c6cf;
  --error: #ba1a1a;
  --on-error: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.08);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.12);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.16);
  color-scheme: light;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--on-surface);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.firefox {
  height: 100svh;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.icon-btn:focus-visible,
.icon-btn-sm:focus-visible,
.text-btn:focus-visible,
.text-btn-sm:focus-visible,
.browser-item:focus-visible,
.repo-list-item:focus-visible,
.result-action-btn:focus-visible,
.random-book-btn:focus-visible,
.random-big-btn:focus-visible,
.filter-checkbox-item:focus-visible,
.back-to-global:focus-visible,
.sidebar-breadcrumb .crumb-item:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: none;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover, a:focus-visible {
  text-decoration: underline;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, select {
  font-family: inherit;
  font-size: inherit;
  color: var(--on-surface);
  background: none;
  border: none;
  outline: none;
}

ul, li {
  list-style: none;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--outline-variant);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--outline);
}

#header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  background: var(--surface-container);
  border-bottom: 1px solid var(--outline-variant);
  z-index: 100;
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--on-surface);
  font-weight: 600;
  font-size: 15px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  text-decoration: none;
}

.header-logo:hover, .header-logo:focus-visible {
  background: var(--surface-variant);
  text-decoration: none;
}

.header-center {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 680px;
  height: 36px;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary) 25%, transparent);
}

.search-icon {
  flex-shrink: 0;
  margin-left: 12px;
  color: var(--on-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-input {
  flex: 1;
  height: 100%;
  padding: 0 8px;
  font-size: 14px;
  background: transparent;
  min-width: 0;
}

.search-input::placeholder {
  color: var(--on-surface-variant);
  opacity: 0.6;
}

.search-kbd {
  flex-shrink: 0;
  margin-right: 8px;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  opacity: 0.7;
  font-family: var(--font-mono);
}

.search-history-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  z-index: 100;
  max-height: 320px;
  overflow-y: auto;
  padding: 4px 0;
}

.search-history-dropdown .history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 13px;
  color: var(--on-surface);
  transition: background 0.1s;
}

.search-history-dropdown .history-item:hover {
  background: var(--surface-variant);
}

.search-history-dropdown .history-icon {
  flex-shrink: 0;
  color: var(--on-surface-variant);
  opacity: 0.5;
}

.search-history-dropdown .history-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-history-dropdown .history-del {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  color: var(--on-surface-variant);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0.65;
}

.search-history-dropdown .history-del:hover,
.search-history-dropdown .history-del:focus-visible {
  background: var(--surface-variant);
  color: var(--primary);
  opacity: 1;
}

.search-history-dropdown .history-footer {
  padding: 6px 12px;
  border-top: 1px solid var(--outline-variant);
  display: flex;
  justify-content: center;
}

.search-history-dropdown .history-clear-all {
  font-size: 12px;
  color: var(--primary);
  padding: 4px 8px;
  border-radius: 6px;
}

.search-history-dropdown .history-clear-all:hover,
.search-history-dropdown .history-clear-all:focus-visible {
  background: var(--surface-variant);
}

.search-history-dropdown .history-del {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--on-surface-variant);
  font-size: 16px;
  cursor: pointer;
  padding: 0 6px;
  opacity: 0.5;
}

.search-history-dropdown .history-del:hover {
  opacity: 1;
  color: var(--error);
}

.search-history-dropdown .history-footer {
  padding: 4px 12px;
  border-top: 1px solid var(--outline-variant);
  text-align: center;
}

.search-history-dropdown .history-clear-all {
  background: none;
  border: none;
  color: var(--on-surface-variant);
  font-size: 12px;
  cursor: pointer;
  opacity: 0.6;
}

.search-history-dropdown .history-clear-all:hover {
  opacity: 1;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--on-surface-variant);
  transition: all var(--transition);
}

.icon-btn:hover, .icon-btn:focus-visible {
  background: var(--surface-variant);
  color: var(--on-surface);
}

.icon-btn .ui-icon,
.search-icon .ui-icon {
  width: 18px;
  height: 18px;
}

.icon-btn-sm {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--on-surface-variant);
  font-size: 18px;
  transition: all var(--transition);
}

.icon-btn-sm:hover, .icon-btn-sm:focus-visible {
  background: var(--surface-variant);
  color: var(--on-surface);
}

.text-btn {
  font-size: 12px;
  color: var(--primary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.text-btn:hover, .text-btn:focus-visible {
  background: var(--surface-variant);
}

.text-btn-sm {
  font-size: 11px;
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 4px;
  transition: background var(--transition);
}

.text-btn-sm:hover, .text-btn-sm:focus-visible {
  background: var(--surface-variant);
}

.preview-panel {
  margin: 12px 16px;
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  flex: 0 1 auto;
  min-height: 0;
  max-height: 50%;
}

.preview-panel[hidden] {
  display: none;
}

body.preview-open {
  user-select: none;
  -webkit-user-select: none;
}

body.preview-open #preview-panel {
  user-select: text;
  -webkit-user-select: text;
}

body.preview-open #preview-panel .preview-header {
  user-select: none;
  -webkit-user-select: none;
}

.preview-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--outline-variant);
}

.preview-heading {
  min-width: 0;
  flex: 1;
}

.preview-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.preview-tools {
  display: flex;
  flex-shrink: 0;
  gap: 4px;
}

.preview-theme-btn {
  display: none;
}

.proofread-tools {
  flex-direction: column;
  align-items: stretch;
}

.proofread-mode-btn {
  display: none;
}

.proofread-back-btn {
  white-space: nowrap;
}

.theme-icon-svg {
  width: 18px;
  height: 18px;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.preview-compare-control {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 78px;
  height: 28px;
  padding: 0 20px 0 8px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--on-surface);
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
  overflow: hidden;
}

.preview-compare-control::after {
  content: "▾";
  position: absolute;
  right: 7px;
  pointer-events: none;
}

.preview-compare-control select {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.preview-commands {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
}

.preview-compare-note {
  margin-top: 4px;
  font-size: 12px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-compare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  flex: 1;
  min-height: 0;
}

.preview-compare-grid > div {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.preview-compare-grid > div:first-child {
  border-right: 1px solid var(--outline-variant);
}

.preview-panel.proofread-mode {
  max-height: calc(100vh - 110px);
}

.proofread-grid {
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(420px, 1fr);
  min-height: 0;
  flex: 1;
}

.proofread-grid-no-source {
  grid-template-columns: minmax(0, 1fr);
}

.proofread-source,
.proofread-editor {
  min-width: 0;
  min-height: 0;
}

.proofread-source {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--outline-variant);
}

.proofread-source iframe {
  width: 100%;
  min-height: 520px;
  flex: 1;
  border: 0;
  background: #fff;
}

.proofread-image-viewer {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
}

.proofread-image-tools,
.proofread-form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
}

.proofread-image-tools {
  padding: 7px 12px;
  border-bottom: 1px solid var(--outline-variant);
}

.proofread-page-viewer .proofread-image-tools {
  flex-wrap: wrap;
}

.proofread-page-control input {
  width: 4rem;
}

.proofread-image-stage {
  position: relative;
  display: flex;
  min-height: 520px;
  flex: 1;
  display: block;
  align-items: flex-start;
  justify-content: flex-start;
  overflow: auto;
  background: #fff;
}

.proofread-image-stage img {
  display: block;
  flex: 0 0 auto;
  margin: 0;
  max-width: 100%;
  height: auto;
  transform-origin: top left;
}

.proofread-image-download,
.proofread-document-download {
  margin-left: auto;
  padding: 5px 8px;
  background: var(--surface);
  border-radius: 4px;
}

.proofread-document-viewer {
  position: relative;
  display: flex;
  min-height: 520px;
  flex: 1;
  flex-direction: column;
}

.proofread-pdf-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  padding: 7px 12px;
  border-bottom: 1px solid var(--outline-variant);
  font-size: 12px;
}

.proofread-pdf-tools input {
  width: 4rem;
}

.proofread-pdf-stage {
  display: flex;
  min-height: 520px;
  flex: 1;
  align-items: flex-start;
  justify-content: flex-start;
  overflow: auto;
  padding: 16px;
  background: #e6e6e6;
}

.proofread-pdf-stage.is-loading,
.proofread-pdf-stage.is-error {
  padding: 0;
  background: #fff;
  align-items: stretch;
}

.proofread-pdf-stage.is-error canvas {
  width: 100%;
  height: 100%;
  min-height: 100%;
  box-shadow: none;
  visibility: hidden;
}

.proofread-pdf-stage canvas {
  display: block;
  flex: 0 0 auto;
  max-width: none;
  background: #fff;
  box-shadow: 0 1px 4px rgb(0 0 0 / 25%);
}

.proofread-document-viewer iframe {
  width: 100%;
  min-height: 520px;
  flex: 1;
  border: 0;
  background: #fff;
}

.proofread-document-download {
  flex: 0 0 auto;
}

.proofread-no-source {
  display: flex;
  min-height: 220px;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 24px;
  color: var(--on-surface-variant);
  text-align: center;
}

.preview-proofread-unavailable {
  align-self: center;
  color: var(--on-surface-variant);
  font-size: 12px;
}

.proofread-pane-header {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--outline-variant);
  font-size: 13px;
  font-weight: 600;
}

.proofread-pane-header select {
  max-width: 70%;
}

.proofread-editor {
  overflow: auto;
  padding: 12px;
}

.proofread-editor fieldset {
  margin: 0 0 14px;
  padding: 10px;
  border: 1px solid var(--outline-variant);
  border-radius: 6px;
}

.proofread-editor legend {
  padding: 0 5px;
  color: var(--on-surface-variant);
  font-size: 12px;
}

.proofread-field {
  display: grid;
  gap: 5px;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--on-surface-variant);
}

.proofread-field input,
.proofread-field select,
.proofread-field textarea,
.proofread-pane-header select {
  box-sizing: border-box;
  width: 100%;
  border: 1px solid var(--outline-variant);
  border-radius: 4px;
  background: var(--surface);
  color: var(--on-surface);
  padding: 7px 8px;
  font: inherit;
}

.proofread-field textarea {
  min-height: 76px;
  resize: vertical;
  line-height: 1.6;
}
.proofread-part-group.proofread-deleted {
  opacity: .55;
}
.proofread-part-actions {
  display: flex;
  gap: .35rem;
  flex-wrap: wrap;
}

.proofread-structure-closed .proofread-part-actions,
.proofread-structure-closed [data-proofread-part-type] {
  display: none;
}

.proofread-part-type-label {
  display: none;
}

.proofread-structure-closed .proofread-part-type-label {
  display: inline;
}

.proofread-structure-closed .proofread-part > span:first-child {
  display: flex;
  align-items: center;
  gap: .3rem;
}

.proofread-description-heading {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.proofread-description-heading .proofread-form-actions {
  margin-left: auto;
}
.proofread-page-control {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  margin-left: auto;
  font-size: .8rem;
}
.proofread-page-control input {
  width: 5rem;
}
[data-fulltext-box] {
  display: grid;
  gap: .5rem;
  margin-bottom: .75rem;
}

[data-part-editor][hidden] {
  display: none;
}
[data-fulltext-box][hidden] {
  display: none;
}
[data-fulltext-input] {
  box-sizing: border-box;
  width: 100%;
  min-height: 16rem;
  border: 1px solid var(--outline-variant);
  border-radius: 6px;
  background: var(--surface);
  color: var(--on-surface);
  padding: 12px 14px;
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", var(--font-sans);
  font-size: 15px;
  line-height: 1.95;
  resize: vertical;
}

[data-fulltext-input]:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

.proofread-part textarea,
.proofread-new-part textarea {
  min-height: 120px;
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", var(--font-sans);
  font-size: 15px;
}

.proofread-list {
  display: grid;
  gap: 6px;
}

.proofread-list-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(72px, 1fr)) 28px;
  gap: 5px;
  align-items: center;
}

.proofread-list > .text-btn-sm {
  justify-self: start;
}

.proofread-empty {
  color: var(--on-surface-variant);
  font-size: 12px;
}

.preview-compare-grid .preview-path {
  padding: 10px 14px 0;
}

.preview-body.compare-body {
  max-height: 58vh;
}

.diff-line {
  display: block;
  margin: 0 -4px;
  padding: 0 4px;
}

.diff-add {
  background: color-mix(in srgb, #2e7d32 28%, transparent);
}

.diff-del {
  background: color-mix(in srgb, #b3261e 25%, transparent);
}

.diff-gap {
  min-height: 1.75em;
  opacity: 0.4;
}

.preview-title {
  font-size: 15px;
  font-weight: 600;
}

.preview-path {
  font-size: 12px;
  opacity: 0.7;
  margin-top: 4px;
  word-break: break-all;
}

.preview-tag-pager {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  font-size: 11px;
  color: var(--on-surface-variant);
}

.preview-tag-pager .text-btn-sm:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.preview-body {
  box-sizing: border-box;
  width: 100%;
  margin: 0;
  padding-block: 24px 36px;
  padding-inline: max(20px, calc((100% - 72ch) / 2));
  max-height: none;
  height: auto;
  flex: 0 1 auto;
  min-height: 0;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", var(--font-sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.015em;
  text-wrap: pretty;
  tab-size: 4;
}

.preview-body mark {
  background: #8a6518;
  color: #fff4cf;
  padding: 0 2px;
  border-radius: 2px;
}

body.light .preview-body mark {
  background: color-mix(in srgb, var(--primary) 32%, transparent);
  color: var(--on-surface);
}

body.mobile .preview-compare-grid {
  display: block;
  overflow-y: auto;
}

body.mobile .proofread-grid {
  display: block;
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
  overflow-y: scroll;
  overflow-x: hidden;
  padding-bottom: max(48px, env(safe-area-inset-bottom));
  overscroll-behavior-y: contain;
  touch-action: pan-y;
  -webkit-overflow-scrolling: touch;
}

body.mobile .proofread-source {
  height: 52vh;
  min-height: 0;
  overflow: hidden;
  border-right: 0;
  border-bottom: 1px solid var(--reader-divider, var(--outline-variant));
}

body.mobile .proofread-image-viewer,
body.mobile .proofread-document-viewer {
  min-height: 0;
  height: calc(52vh - 42px);
  flex: 1 1 auto;
}

body.mobile .proofread-image-stage,
body.mobile .proofread-pdf-stage {
  min-height: 0;
  flex: 1 1 auto;
  height: auto;
  max-height: none;
  overflow: auto;
  touch-action: pan-x pan-y;
  -webkit-overflow-scrolling: touch;
}

body.mobile .proofread-pdf-stage.is-loading,
body.mobile .proofread-pdf-stage.is-error {
  padding: 0;
}

body.mobile .proofread-source iframe {
  min-height: 0;
}

body.mobile .proofread-editor {
  min-height: max-content;
  overflow: visible;
  scroll-margin-bottom: max(48px, env(safe-area-inset-bottom));
  padding-bottom: max(28px, env(safe-area-inset-bottom));
}

body.mobile .preview-compare-grid > div:first-child {
  border-right: none;
  border-bottom: 1px solid var(--outline-variant);
}

body.mobile .preview-body.compare-body {
  max-height: none;
  overflow: visible;
}

body.mobile .preview-compare-grid .diff-gap {
  display: none;
}

body.mobile.preview-open .preview-panel {
  --reader-bg: #1d1e1b;
  --reader-header: #22231f;
  --reader-text: #d4d0c6;
  --reader-title: #e3dfd5;
  --reader-muted: #9f9d95;
  --reader-divider: #393a35;
  --reader-mark: #59491f;
  --reader-on-mark: #f2d98f;
  position: fixed;
  inset: 0;
  z-index: 150;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  margin: 0;
  border: 0;
  border-radius: 0;
  flex: none;
  max-height: none;
  color: var(--reader-text);
  background: var(--reader-bg);
}

body.light.mobile.preview-open .preview-panel {
  --reader-bg: #f7f3e8;
  --reader-header: #f0ecdf;
  --reader-text: #2d2b27;
  --reader-title: #1e1d1a;
  --reader-muted: #6b6860;
  --reader-divider: #d7d0c2;
  --reader-mark: #f1d58a;
  --reader-on-mark: #3a2d0d;
}

body.mobile.preview-open .preview-header {
  flex-shrink: 0;
  padding-top: max(12px, env(safe-area-inset-top));
  color: var(--reader-title);
  background: var(--reader-header);
  border-color: var(--reader-divider);
}

body.mobile.preview-open .preview-actions {
  display: grid;
  grid-template-columns: minmax(0, auto) auto;
  align-items: start;
  max-width: none;
  justify-content: flex-end;
}

body.mobile.preview-open .preview-commands {
  --preview-command-width: 78px;
  flex-direction: column;
  align-items: flex-end;
}

body.mobile.preview-open .preview-commands > .result-action-btn,
body.mobile.preview-open .preview-compare-control {
  box-sizing: border-box;
  width: var(--preview-command-width);
  min-width: var(--preview-command-width);
  max-width: var(--preview-command-width);
  text-align: center;
  justify-content: center;
}

body.mobile.preview-open .preview-compare-control {
  color: var(--reader-title);
  background: var(--reader-header);
  border-color: var(--reader-divider);
}

body.mobile.preview-open .preview-compare-control:focus-within {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

body.mobile.preview-open .preview-tools {
  flex-direction: column;
}

body.mobile.preview-open .proofread-tools {
  display: grid;
  grid-template-columns: 28px 28px;
  align-items: start;
  justify-items: start;
}

body.mobile.preview-open .proofread-mode-btn {
  display: flex;
}

body.mobile.preview-open .proofread-tools .preview-theme-btn {
  grid-column: 2;
  grid-row: 2;
}

body.mobile.preview-open .preview-theme-btn {
  display: flex;
}

body.mobile.preview-open .preview-body {
  flex: 1;
  min-height: 0;
  max-height: none;
  padding: 22px 18px max(36px, env(safe-area-inset-bottom));
  font-size: 17px;
  line-height: 1.95;
  letter-spacing: 0.02em;
  color: var(--reader-text);
  background: var(--reader-bg);
}

body.mobile.preview-open .preview-body mark {
  color: var(--reader-on-mark);
  background: var(--reader-mark);
}

body.mobile.preview-open .preview-meta-row {
  min-width: 0;
  max-width: none;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  word-break: normal;
  scrollbar-width: thin;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
}

body.mobile.preview-open .preview-path {
  color: var(--reader-muted);
  opacity: 1;
}

body.mobile.preview-open .preview-meta-row .preview-path {
  overflow: visible;
  flex: 0 0 auto;
}

body.mobile.preview-open .preview-compare-grid .preview-path {
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  word-break: normal;
  touch-action: pan-x;
  -webkit-overflow-scrolling: touch;
}

body.mobile.preview-open .preview-tools .icon-btn-sm {
  color: var(--reader-muted);
}

.result-snippet {
  margin-top: 6px;
  font-size: 12px;
  opacity: 0.85;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.result-snippet mark {
  background: #8a6518;
  color: #fff4cf;
  padding: 0 2px;
  border-radius: 2px;
}

body.light .result-snippet mark {
  background: color-mix(in srgb, var(--primary) 30%, transparent);
  color: var(--on-surface);
}

.app-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--outline-variant);
  background: var(--surface-container);
  transition: width var(--transition), opacity var(--transition);
  overflow: hidden;
}

.sidebar.collapsed {
  width: 0 !important; 
  border-right: none;
}

.right-sidebar {
  border-right: none;
  border-left: 1px solid var(--outline-variant);
}

.right-sidebar.collapsed {
  border-left: none;
}

.right-sidebar[hidden] {
  display: none;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  font-size: 12px;
  height: 36px;
  min-height: 36px;
  font-weight: 600;
  color: var(--on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--outline-variant);
  flex-shrink: 0;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0;
}

.sidebar-loading {
  padding: 16px;
  text-align: center;
  font-size: 13px;
  color: var(--on-surface-variant);
  opacity: 0.7;
}

.sidebar.expanded-wide {
  width: var(--sidebar-expanded-w) !important;
}

.sidebar-expand-btn {
  position: relative;
}

.sidebar-expand-icon,
.sidebar-expand-icon::before,
.sidebar-expand-icon::after {
  display: block;
  box-sizing: border-box;
}

.sidebar-expand-icon {
  width: 16px;
  height: 12px;
  position: relative;
}

.sidebar-expand-icon::before,
.sidebar-expand-icon::after {
  content: "";
  position: absolute;
  top: 2px;
  width: 8px;
  height: 8px;
  border-top: 1.7px solid currentColor;
  border-right: 1.7px solid currentColor;
}

.sidebar-expand-icon::before {
  left: 0;
  transform: rotate(-135deg);
}

.sidebar-expand-icon::after {
  right: 0;
  transform: rotate(45deg);
}

.left-sidebar.expanded-wide .sidebar-expand-icon::before {
  transform: rotate(45deg);
}

.left-sidebar.expanded-wide .sidebar-expand-icon::after {
  transform: rotate(-135deg);
}

body.mobile .sidebar-expand-btn {
  display: none;
}

.sidebar-breadcrumb {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 6px 8px;
  border-bottom: 1px solid var(--outline-variant);
  flex-wrap: wrap;
  font-size: 12px;
  flex-shrink: 0;
  min-height: 32px;
}

.sidebar-breadcrumb .crumb-item {
  color: var(--primary);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  white-space: nowrap;
  transition: background var(--transition);
}

.sidebar-breadcrumb .crumb-item:hover,
.sidebar-breadcrumb .crumb-item:focus-visible {
  background: var(--surface-variant);
}

.sidebar-breadcrumb .crumb-item.current {
  color: var(--on-surface-variant);
  cursor: default;
  font-weight: 500;
}

.sidebar-breadcrumb .crumb-item.current:hover,
.sidebar-breadcrumb .crumb-item.current:focus-visible {
  background: none;
}

.sidebar-breadcrumb .crumb-sep {
  color: var(--outline);
  flex-shrink: 0;
}

.back-to-global {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  height: 40px;
  font-size: 13px;
  color: var(--primary);
  cursor: pointer;
  border-bottom: 1px solid var(--outline-variant);
  transition: background var(--transition);
  flex-shrink: 0;
  box-sizing: border-box;
}

.back-to-global:hover, .back-to-global:focus-visible {
  background: var(--surface-variant);
}

.browser-list {
  flex: 1;
  overflow-y: auto;
}

.browser-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  cursor: pointer;
  transition: background var(--transition);
  font-size: 13px;
  color: var(--on-surface);
}

.browser-item:hover, .browser-item:focus-visible {
  background: var(--surface-variant);
}

.browser-item:nth-child(even) {
  background: transparent;
}

.left-sidebar.expanded-wide .browser-item:nth-child(even) {
  background: rgba(255, 255, 255, 0.04);
}

body.light .left-sidebar.expanded-wide .browser-item:nth-child(even) {
  background: rgba(0, 0, 0, 0.04);
}

.left-sidebar.expanded-wide .browser-item:nth-child(even):hover,
.left-sidebar.expanded-wide .browser-item:nth-child(even):focus-visible {
  background: var(--surface-variant);
}

.browser-item .browser-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--on-surface-variant);
}

.browser-item .browser-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.browser-item .browser-count {
  font-size: 10px;
  color: var(--on-surface-variant);
  flex-shrink: 0;
}

.browser-item .browser-size {
  font-size: 10px;
  color: var(--on-surface-variant);
  flex-shrink: 0;
  margin-right: 4px;
}

.browser-item .browser-action {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--primary);
  border: 1px solid var(--primary);
  flex-shrink: 0;
  transition: all var(--transition);
  white-space: nowrap;
}

.browser-item .browser-action:hover,
.browser-item .browser-action:focus-visible {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
  overflow: hidden;
}

.repo-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  cursor: pointer;
  transition: background var(--transition);
}

.repo-list-item:hover, .repo-list-item:focus-visible {
  background: var(--surface-variant);
}

.repo-list-item.active {
  background: var(--secondary-container);
}

.repo-list-item .repo-icon {
  width: 18px;
  height: 18px;
  color: var(--on-surface-variant);
  flex-shrink: 0;
}

.repo-list-item .repo-name {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  color: var(--on-surface);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.repo-list-item .repo-count {
  font-size: 11px;
  color: var(--on-surface-variant);
  flex-shrink: 0;
}

.ui-icon {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--on-surface-variant);
}

.ui-icon-folder::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 4px;
  width: 14px;
  height: 10px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
}

.ui-icon-folder::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 1px;
  width: 6px;
  height: 4px;
  border: 1.5px solid currentColor;
  border-bottom: none;
  border-radius: 3px 3px 0 0;
}

.ui-icon-file::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 1px;
  width: 10px;
  height: 13px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
}

.ui-icon-file::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 5px;
  width: 4px;
  height: 1.5px;
  background: currentColor;
  box-shadow: 0 3px 0 currentColor, 0 6px 0 currentColor;
}

.ui-icon-stack::before,
.ui-icon-stack::after {
  content: "";
  position: absolute;
  width: 11px;
  height: 7px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
}

.ui-icon-stack::before {
  left: 1px;
  top: 6px;
}

.ui-icon-stack::after {
  left: 4px;
  top: 2px;
  background: var(--surface-container);
}

.ui-icon-book::before,
.ui-icon-book::after {
  content: "";
  position: absolute;
  top: 2px;
  width: 6px;
  height: 11px;
  border: 1.5px solid currentColor;
  border-radius: 2px;
}

.ui-icon-book::before {
  left: 1px;
  border-right-width: 0.75px;
}

.ui-icon-book::after {
  right: 1px;
  border-left-width: 0.75px;
}

.ui-icon-menu::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 4px;
  width: 12px;
  height: 1.8px;
  background: currentColor;
  border-radius: 999px;
  box-shadow: 0 4px 0 currentColor, 0 8px 0 currentColor;
}

.ui-icon-search::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 2px;
  width: 9px;
  height: 9px;
  border: 1.8px solid currentColor;
  border-radius: 50%;
}

.ui-icon-search::after {
  content: "";
  position: absolute;
  right: 2px;
  bottom: 2px;
  width: 6px;
  height: 1.8px;
  background: currentColor;
  border-radius: 999px;
  transform: rotate(45deg);
}

.ui-icon-sliders::before,
.ui-icon-sliders::after {
  content: "";
  position: absolute;
  left: 2px;
  width: 12px;
  height: 1.8px;
  background: currentColor;
  border-radius: 999px;
}

.ui-icon-sliders::before {
  top: 5px;
  box-shadow: 0 6px 0 currentColor;
}

.ui-icon-sliders::after {
  top: 5px;
  left: 8px;
  width: 4px;
  height: 4px;
  border: 1.8px solid currentColor;
  border-radius: 50%;
  background: var(--surface-container);
  box-shadow: -6px 6px 0 -1px var(--surface-container), -6px 6px 0 0 currentColor;
}

.ui-icon-theme::before {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: 50%;
  border: 1.8px solid currentColor;
}

.ui-icon-theme::after {
  content: "";
  position: absolute;
  top: 2px;
  right: 2px;
  width: 7px;
  height: 11px;
  background: var(--surface-container);
  border-radius: 999px;
}

.ui-icon-phone::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 8px;
  height: 14px;
  border: 1.8px solid currentColor;
  border-radius: 3px;
}

.ui-icon-phone::after {
  content: "";
  position: absolute;
  left: 7px;
  bottom: 3px;
  width: 2px;
  height: 2px;
  background: currentColor;
  border-radius: 50%;
}

.ui-icon-desktop::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 2px;
  width: 14px;
  height: 9px;
  border: 1.8px solid currentColor;
  border-radius: 3px;
}

.ui-icon-desktop::after {
  content: "";
  position: absolute;
  left: 5px;
  bottom: 1px;
  width: 6px;
  height: 1.8px;
  background: currentColor;
  border-radius: 999px;
  box-shadow: 0 -3px 0 -0.3px var(--surface-container);
}

.ui-icon-devices::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 3px;
  width: 9px;
  height: 7px;
  border: 1.8px solid currentColor;
  border-radius: 2px;
}

.ui-icon-devices::after {
  content: "";
  position: absolute;
  right: 1px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: 1.8px solid currentColor;
  border-radius: 2px;
}

.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 16px;
  border-bottom: 1px solid var(--outline-variant);
  flex-shrink: 0;
  min-height: 36px;
  height: 36px;
}

.status-left {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--on-surface-variant);
}

.status-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

body.mobile .status-bar {
  padding: 4px 8px;
  gap: 4px;
}

body.mobile .status-left { gap: 4px; }

body.mobile .status-right { gap: 4px; }

body.mobile .multi-toggle { padding: 1px 4px; font-size: 11px; }

.sort-group {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--on-surface-variant);
}

.sort-select {
  font-size: 12px;
  padding: 2px 6px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--on-surface);
  cursor: pointer;
}

.did-you-mean {
  font-size: 12px;
  color: var(--primary);
  cursor: pointer;
}

.did-you-mean:hover, .did-you-mean:focus-visible {
  text-decoration: underline;
}

.results-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.results-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.results-list[hidden] {
  display: none;
}

.preview-panel:not([hidden]) + .results-list {
  border-top: 1px solid var(--outline-variant);
}

.result-item {
  display: flex;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--outline-variant);
  transition: background var(--transition);
}

.result-item:nth-child(even) {
  background: var(--surface-variant);
}

.result-item:nth-child(even):hover,
.result-item:nth-child(even):focus-visible {
  background: var(--secondary-container);
}

.result-item:hover, .result-item:focus-visible {
  background: var(--surface-variant);
}

.result-file-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--on-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-file-icon svg {
  width: 22px;
  height: 22px;
}

.result-info {
  flex: 1;
  min-width: 0;
}

.result-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--on-surface);
  word-break: break-all;
  line-height: 1.4;
}

.result-title mark {
  background: #8a6518;
  color: #fff4cf;
  border-radius: 2px;
  padding: 0 1px;
}

body.light .result-title mark {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.result-path {
  font-size: 11px;
  color: var(--on-surface-variant);
  margin-top: 3px;
  font-family: var(--font-mono);
  word-break: break-all;
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
  line-height: 1.5;
}

.result-path .path-sep {
  color: var(--outline);
  margin: 0 2px;
  user-select: none;
}

.result-path .path-folder {
  cursor: pointer;
  color: var(--secondary);
  transition: color var(--transition);
}

.result-path .path-folder:hover,
.result-path .path-folder:focus-visible {
  color: var(--primary);
  text-decoration: underline;
}

.result-preview {
  font-size: 12px;
  color: var(--on-surface-variant);
  margin-top: 4px;
  line-height: 1.5;
  max-height: 3em;
  overflow: hidden;
  font-family: var(--font-mono);
}

.result-preview mark {
  background: var(--primary-container);
  color: var(--on-primary-container);
  border-radius: 2px;
  padding: 0 1px;
}

.result-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.result-repo-tag {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--primary-container);
  color: var(--on-primary-container);
  cursor: pointer;
  font-weight: 500;
  transition: opacity var(--transition);
}

.result-repo-tag:hover, .result-repo-tag:focus-visible {
  opacity: 0.8;
}

.result-size {
  font-size: 11px;
  color: var(--on-surface-variant);
}

.result-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  flex-wrap: wrap;
  align-items: flex-start;
}

.result-action-btn {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  color: var(--on-surface-variant);
  border: 1px solid var(--outline-variant);
  white-space: nowrap;
  transition: all var(--transition);
}

.result-action-btn:hover, .result-action-btn:focus-visible {
  background: var(--surface-variant);
  border-color: var(--outline);
}

.result-action-btn.primary {
  color: var(--primary);
  border-color: var(--primary);
}

.result-action-btn.primary:hover,
.result-action-btn.primary:focus-visible {
  background: var(--primary-container);
  border-color: var(--primary);
  color: var(--on-primary-container);
}

.load-info {
  text-align: center;
  padding: 12px;
  font-size: 12px;
  color: var(--on-surface-variant);
  border-top: 1px solid var(--outline-variant);
  flex-shrink: 0;
  background: var(--surface-container);
}

.page-jump {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.page-input {
  width: 54px;
  height: 24px;
  padding: 0 6px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--on-surface);
  text-align: center;
}

.filter-choice-pager .page-input {
  width: 46px;
  height: 22px;
  font-size: 11px;
}

.mobile-selected-count {
  display: none;
  color: var(--on-surface-variant);
  white-space: nowrap;
  flex-shrink: 0;
}

body.mobile .load-info {
  text-align: center;
}

body.mobile .mobile-selected-count {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
}

.scroll-track {
  position: absolute;
  right: 2px;
  top: 40px;
  bottom: 50px;
  width: 8px;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.scroll-track.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-thumb {
  position: absolute;
  width: 6px;
  left: 1px;
  border-radius: 3px;
  background: var(--outline);
  cursor: pointer;
  min-height: 30px;
  transition: background var(--transition);
}

.scroll-thumb:hover, .scroll-thumb:focus-visible {
  background: var(--on-surface-variant);
}

.footer {
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--outline-variant);
  padding: 0 16px;
  flex-shrink: 0;
  position: relative;
  background: var(--surface-container);
}

.hitokoto {
  font-size: 11px;
  color: var(--on-surface-variant);
  opacity: 0.55;
  text-align: center;
  max-width: 70%;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  min-height: 18px;
}

.random-book-btn {
  position: static;
  transform: none;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--on-surface-variant);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container);
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
}

.random-book-btn:hover, .random-book-btn:focus-visible {
  background: var(--surface-variant);
  border-color: var(--outline);
  color: var(--primary);
}

.filter-section {
  border-bottom: 1px solid var(--outline-variant);
  padding: 10px 12px;
}

#fulltext-toggle-section,
#search-paths-toggle-section,
#history-toggle-section,
#exact-search-section,
#preview-highlight-section {
  padding: 0 12px;
  height: 40px;
  box-sizing: border-box;
}

#fulltext-toggle-section .toggle-row,
#search-paths-toggle-section .toggle-row,
#history-toggle-section .toggle-row,
#exact-search-section .toggle-row,
#preview-highlight-section .toggle-row {
  height: 100%;
}

.filter-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 600;
  color: var(--on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.filter-actions {
  display: flex;
  gap: 4px;
}

.filter-checkbox-list {
  max-height: 240px;
  overflow-y: auto;
}

.filter-checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 13px;
  color: var(--on-surface);
  cursor: pointer;
  transition: color var(--transition);
}

.filter-checkbox-item:hover, .filter-checkbox-item:focus-visible {
  color: var(--primary);
}

.filter-checkbox-item input[type="checkbox"] {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.filter-checkbox-item .checkbox-count {
  font-size: 10px;
  color: var(--on-surface-variant);
  margin-left: auto;
}

.filter-folder-tree {
  max-height: 280px;
  overflow-y: auto;
  overflow-x: auto;
  white-space: nowrap;
  position: relative;
}

.filter-folder-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 0 3px calc(var(--fdepth, 0) * 16px);
  font-size: 13px;
  color: var(--on-surface);
  cursor: pointer;
  white-space: nowrap;
  flex-wrap: nowrap;
  width: max-content;
  min-width: 100%;
  transform-origin: top left;
  will-change: transform, opacity;
}

.filter-folder-item .tree-toggle {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--on-surface-variant);
  font-size: 10px;
  border: 0;
  background: transparent;
  padding: 0;
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.16s ease, background 0.16s ease;
  position: relative;
}

.filter-folder-item .tree-toggle-glyph {
  display: block;
  width: 7px;
  height: 7px;
  border-right: 1.8px solid currentColor;
  border-bottom: 1.8px solid currentColor;
  box-sizing: border-box;
  transform: rotate(-45deg);
  transform-origin: 50% 50%;
  transition: transform 220ms ease;
}

.filter-folder-item .tree-toggle:hover,
.filter-folder-item .tree-toggle:focus-visible {
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
}

.filter-folder-item .tree-toggle.expanded .tree-toggle-glyph {
  transform: rotate(45deg);
}

.filter-folder-item .tree-toggle-placeholder {
  width: 16px;
  height: 16px;
  display: inline-block;
  flex-shrink: 0;
}

.filter-folder-item input[type="checkbox"] {
  accent-color: var(--primary);
  width: 14px;
  height: 14px;
  cursor: pointer;
  flex-shrink: 0;
}

.filter-folder-item .folder-name {
  flex: 0 0 auto;
}

.folder-self-toggle {
  border: 1px solid var(--outline-variant);
  background: transparent;
  color: var(--on-surface-variant);
  border-radius: 999px;
  font-size: 11px;
  line-height: 1;
  padding: 4px 8px;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  flex-shrink: 0;
  margin-left: 4px;
}

.filter-folder-item .folder-count {
  font-size: 10px;
  color: var(--on-surface-variant);
  margin-left: auto;
  flex-shrink: 0;
}

.folder-self-toggle:hover,
.folder-self-toggle:focus-visible {
  border-color: var(--primary);
  color: var(--primary);
}

.folder-self-toggle.active {
  background: color-mix(in srgb, var(--primary) 18%, transparent);
  border-color: var(--primary);
  color: var(--primary);
}

.filter-size-row {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.size-input {
  flex: 1;
  font-size: 12px;
  padding: 6px 8px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--on-surface);
  min-width: 0;
}

.size-input:focus {
  border-color: var(--primary);
}

.size-unit {
  font-size: 12px;
  padding: 6px 4px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--on-surface);
  cursor: pointer;
}

.size-sep {
  font-size: 12px;
  color: var(--on-surface-variant);
  flex-shrink: 0;
}

.period-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.period-btn {
  border: 1px solid var(--outline-variant);
  border-radius: 999px;
  background: var(--surface);
  color: var(--on-surface-variant);
  cursor: pointer;
  font-size: 11px;
  line-height: 1.2;
  padding: 4px 8px;
}

.period-btn:hover,
.period-btn:focus-visible,
.period-btn.active {
  border-color: var(--primary);
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
}

.date-range-picker {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.date-subtitle {
  color: var(--on-surface-variant);
  font-size: 12px;
  font-weight: 600;
}

.date-term-section {
  margin-top: 10px;
}

.date-term-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.date-terms {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.date-empty {
  color: var(--on-surface-variant);
  font-size: 12px;
  opacity: 0.75;
}

.date-range-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) minmax(0, 0.8fr) minmax(0, 0.8fr);
  align-items: center;
  gap: 5px;
}

.date-term-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr) minmax(0, 0.8fr) auto;
  align-items: center;
  gap: 5px;
}

.date-range-label {
  color: var(--on-surface-variant);
  font-size: 12px;
}

.date-select {
  min-width: 0;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--on-surface);
  font-size: 12px;
  padding: 5px 4px;
}

.date-select:disabled {
  border-color: color-mix(in srgb, var(--outline-variant) 55%, transparent);
  background: color-mix(in srgb, var(--surface-variant) 70%, transparent);
  color: color-mix(in srgb, var(--on-surface-variant) 45%, transparent);
  cursor: not-allowed;
  opacity: 0.65;
}

.date-select:disabled:hover,
.date-select:disabled:focus {
  border-color: color-mix(in srgb, var(--outline-variant) 55%, transparent);
}

.year-picker {
  position: fixed;
  z-index: 10000;
  max-height: min(360px, 52vh);
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  min-width: 88px;
  padding: 4px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface-container-highest);
  box-shadow: var(--shadow-md);
}

.year-picker[hidden] {
  display: none;
}

.year-option {
  display: block;
  width: 100%;
  padding: 5px 8px;
  border-radius: 4px;
  color: var(--on-surface);
  cursor: pointer;
  font-size: 12px;
  text-align: left;
}

.year-option:hover,
.year-option:focus-visible,
.year-option.active {
  background: var(--surface-variant);
  color: var(--primary);
}

.date-select:focus {
  border-color: var(--primary);
}

.date-error {
  color: var(--error);
  font-size: 12px;
  line-height: 1.4;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 16px;
  text-align: center;
  gap: 12px;
}

.empty-icon {
  width: 56px;
  height: 56px;
  color: var(--outline-variant);
  opacity: 0.4;
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--on-surface-variant);
}

.empty-desc {
  font-size: 13px;
  color: var(--on-surface-variant);
  opacity: 0.6;
}

.random-big-btn {
  font-size: 14px;
  padding: 10px 24px;
  border-radius: 24px;
  background: var(--primary);
  color: var(--on-primary);
  font-weight: 500;
  cursor: pointer;
  transition: opacity var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.random-big-btn:hover, .random-big-btn:focus-visible {
  opacity: 0.85;
}

.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--outline-variant);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.toast {
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  z-index: 200;
  box-shadow: var(--shadow-md);
  animation: toast-in 0.2s ease;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

body.mobile .sidebar {
  position: fixed;
  top: var(--header-h);
  bottom: 0;
  z-index: 95;
  width: 85vw !important;
  max-width: 320px;
  transition: transform var(--transition), opacity var(--transition);
  will-change: transform;
}

body.mobile .left-sidebar {
  left: 0;
  transform: translateX(-100%);
  border-right: 1px solid var(--outline-variant);
  border-left: none;
}

body.mobile .right-sidebar {
  right: 0;
  transform: translateX(100%);
  border-left: 1px solid var(--outline-variant);
  border-right: none;
}

body.mobile .sidebar.open {
  transform: translateX(0);
  box-shadow: var(--shadow-lg);
}

body.mobile .sidebar.expanded-wide {
  width: 85vw !important;
  max-width: 320px;
}

body.mobile .footer {
  display: none;
}

body.mobile .header-logo {
  display: none;
}

body.mobile .random-book-btn {
  display: none;
}

body.mobile .hitokoto {
  display: none;
}

body.mobile .search-kbd {
  display: none;
}

body.mobile .status-bar {
  padding: 4px 8px;
}

body.mobile .result-actions {
  flex-direction: column;
  align-items: flex-end;
}

body.mobile .preview-meta-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  max-width: calc(100vw - 100px);
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 3px;
}

body.mobile .preview-source-author,
body.mobile .preview-tags,
body.mobile .preview-tag-list {
  flex: 0 0 auto;
  margin-top: 0;
  white-space: nowrap;
  word-break: normal;
}

body.mobile .preview-tags {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

body.mobile .preview-tag-pager {
  display: none;
}

body.mobile .preview-tag-list [data-preview-tag-page][hidden] {
  display: inline;
}

@media (max-width: 768px) {
  body:not(.force-desktop) .sidebar {
    position: fixed;
    top: var(--header-h);
    bottom: 0;
    z-index: 95;
    width: 85vw !important;
    max-width: 320px;
    transition: transform var(--transition), opacity var(--transition);
    will-change: transform;
  }

  body:not(.force-desktop) .left-sidebar {
    left: 0;
    transform: translateX(-100%);
    border-right: 1px solid var(--outline-variant);
    border-left: none;
  }

  body:not(.force-desktop) .right-sidebar {
    right: 0;
    transform: translateX(100%);
    border-left: 1px solid var(--outline-variant);
    border-right: none;
  }

  body:not(.force-desktop) .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  body:not(.force-desktop) .sidebar.expanded-wide {
    width: 85vw !important;
    max-width: 320px;
  }

  body:not(.force-desktop) .footer {
    display: none;
  }

  body:not(.force-desktop) .random-book-btn {
    display: none;
  }

  body:not(.force-desktop) .hitokoto {
    display: none;
  }

  body:not(.force-desktop) .search-kbd {
    display: none;
  }
}

.hidden {
  display: none !important;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.toggle-label {
  font-size: 13px;
  color: var(--on-surface);
}

.toggle-row input[type="checkbox"] {
  display: none;
}

.toggle-switch {
  position: relative;
  width: 40px;
  height: 22px;
  background: var(--outline-variant);
  border-radius: 11px;
  transition: background var(--transition);
  flex-shrink: 0;
}

.toggle-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: var(--surface);
  border-radius: 50%;
  transition: transform var(--transition);
}

.toggle-row input:checked + .toggle-switch {
  background: var(--primary);
}

.toggle-row input:checked + .toggle-switch::after {
  transform: translateX(18px);
}

input[type="checkbox"]:indeterminate {
  accent-color: var(--primary);
}

body.theme-transitioning *,
body.theme-transitioning *::before,
body.theme-transitioning *::after {
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease !important;
}

.theme-ripple {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  width: 0;
  height: 0;
  animation: theme-ripple-expand 0.6s ease-out forwards;
}

@keyframes theme-ripple-expand {
  0%   { width: 0; height: 0; opacity: 0.6; }

  100% { width: 300vmax; height: 300vmax; opacity: 0; transform: translate(-150vmax, -150vmax); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.multi-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--on-surface-variant);
  cursor: pointer;
  margin-left: 0;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.multi-toggle:hover { border-color: var(--outline-variant); }

.multi-toggle input { margin: 0; }

.multi-action-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  height: 40px;
  background: var(--surface-variant);
  border-bottom: 1px solid var(--outline-variant);
  box-sizing: border-box;
  flex-wrap: nowrap;
}

.multi-action-btn {
  padding: 4px 12px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--on-surface);
  font-size: 12px;
  cursor: pointer;
}

.multi-action-btn.primary {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.multi-action-btn:hover { opacity: 0.85; }

.multi-selected-count {
  margin-left: auto;
  font-size: 12px;
  color: var(--on-surface-variant);
  white-space: nowrap;
  flex-shrink: 0;
}

body.mobile .multi-action-btn {
  flex-shrink: 0;
}

.result-checkbox {
  display: none;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-right: 6px;
  align-self: center;
  accent-color: var(--primary);
  opacity: 0.85;
}

body.multiselect .result-checkbox { display: block; }

body.multiselect .result-file-icon { display: none; }

.result-item.selected {
  background: color-mix(in srgb, var(--primary) 15%, transparent) !important;
}

.load-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.load-info .text-btn-sm:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.result-snippet em {
  background: #8a6518;
  color: #fff4cf;
  border-radius: 2px;
  padding: 0 1px;
  font-style: normal;
}

body.light .result-snippet em {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.right-sidebar.collapsed,
.left-sidebar.collapsed {
  overflow: hidden;
}

.sidebar .size-input,
.sidebar .sort-select {
  width: 100%;
}

.sidebar .sort-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 24px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M2 2l4 4 4-4' fill='none' stroke='%23c4c6cf' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-position: calc(100% - 10px) 50%;
  background-size: 12px 8px;
  background-repeat: no-repeat;
  border-radius: var(--radius-sm);
}

.sidebar .sort-select:hover,
.sidebar .sort-select:focus {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M2 2l4 4 4-4' fill='none' stroke='%238ab4f8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.filter-section-toggle {
  width: 100%;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--on-surface-variant);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-toggle-glyph {
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
  transform: rotate(0deg);
  transition: transform var(--transition);
}

.filter-section-toggle.collapsed .filter-toggle-glyph {
  transform: rotate(-90deg);
}

.filter-section-body {
  margin-top: 6px;
  max-height: 340px;
  opacity: 1;
  overflow: hidden;
  transform: translateY(0);
  transition: max-height 180ms ease, opacity 160ms ease, transform 180ms ease, margin-top 180ms ease;
}

.filter-section-body.collapsed {
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

.filter-choice-list {
  display: flex;
  flex-direction: column;
  max-height: 260px;
  overflow: hidden;
  margin-top: 6px;
}

.filter-choice-options {
  overflow-y: auto;
  min-height: 0;
}

.filter-choice-pager {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 0 6px;
  font-size: 12px;
  color: var(--on-surface-variant);
  background: var(--surface-container);
  border-top: 1px solid var(--outline-variant);
  margin-top: 4px;
}

.filter-choice-pager button:disabled {
  opacity: 0.4;
  cursor: default;
}

.filter-choice-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 5px 2px;
  font-size: 13px;
  color: var(--on-surface);
  cursor: pointer;
}

.filter-choice-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.tri-state-box {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.tri-state-box {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--outline);
  border-radius: 3px;
  color: transparent;
  font-size: 14px;
  font-weight: 700;
  line-height: 15px;
}

.filter-choice-item.active .tri-state-box {
  background: var(--primary);
  border-color: var(--primary);
}

.filter-choice-item.active .tri-state-box::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 7px;
  height: 4px;
  border-left: 2px solid var(--on-primary);
  border-bottom: 2px solid var(--on-primary);
  transform: translate(-50%, -65%) rotate(-45deg);
}

.filter-choice-item.excluded {
  color: #ffb4ab;
}

.filter-choice-item.excluded .tri-state-box {
  background: #ba1a1a;
  border-color: #ba1a1a;
  color: #ffffff;
}

.filter-choice-item.excluded .tri-state-box::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 2px;
  border: 0;
  border-radius: 999px;
  background: #ffffff;
  transform: translate(-50%, -50%) rotate(45deg);
}

.filter-choice-item.excluded .tri-state-box::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 2px;
  border-radius: 999px;
  background: #ffffff;
  transform: translate(-50%, -50%) rotate(-45deg);
}

.filter-choice-left span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.filter-choice-all {
  border-bottom: 1px solid var(--outline-variant);
  margin-bottom: 4px;
  padding-bottom: 7px;
}

.filter-choice-page-action {
  justify-content: space-between;
  color: var(--primary);
}

.filter-choice-item:hover,
.filter-choice-item.active {
  color: var(--primary);
}

.result-main {
  flex: 1;
  min-width: 0;
}

.result-line {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.result-content-row {
  margin-top: 4px;
  padding-right: 4px;
}

body.mobile .result-line {
  flex-direction: column;
}

body.mobile .result-actions {
  flex-direction: row;
  align-items: flex-start;
}

.proofread-confirm {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, .45);
  padding: 1rem;
}

.proofread-confirm-panel {
  max-width: 760px;
  width: 100%;
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: 10px;
  overflow: hidden;
}

.proofread-confirm-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .6rem;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--outline-variant);
  font-weight: 600;
}

.proofread-confirm-body {
  overflow: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.proofread-confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: .6rem;
  padding: .7rem 1rem;
  border-top: 1px solid var(--outline-variant);
}

.proofread-confirm-item {
  border: 1px solid var(--outline-variant);
  border-radius: 8px;
  padding: .5rem .65rem;
  display: flex;
  flex-direction: column;
  gap: .35rem;
  font-size: .9em;
}

.proofread-confirm-item > strong {
  font-size: .95em;
}

.proofread-confirm-diff {
  display: flex;
  gap: .4rem;
}

.proofread-confirm-diff .diff-pane {
  flex: 1;
  min-width: 0;
  white-space: pre-wrap;
  word-break: break-all;
  font-size: .85em;
  line-height: 1.45;
  background: var(--surface-variant, rgba(128, 128, 128, .08));
  border-radius: 6px;
  padding: .4rem .45rem;
}

.proofread-confirm-newpart {
  display: flex;
  gap: .45rem;
  align-items: baseline;
  background: color-mix(in srgb, #2e7d32 12%, transparent);
  border-radius: 6px;
  padding: .3rem .45rem;
  white-space: pre-wrap;
  word-break: break-all;
}

.proofread-confirm-parttype {
  flex: 0 0 auto;
  font-size: .75em;
  color: var(--primary);
  border: 1px solid currentColor;
  border-radius: 4px;
  padding: 0 .3em;
}

.proofread-confirm-field {
  white-space: pre-wrap;
  word-break: break-all;
}

.proofread-confirm-empty {
  color: var(--on-surface-variant, inherit);
  padding: .6rem 0;
  text-align: center;
}

body.mobile .proofread-confirm-diff {
  flex-direction: column;
}