:root {
  color-scheme: light;
  --bg: #f3f0e8;
  --surface: #fffdf7;
  --surface-alt: #f7f7f2;
  --line: #d6d1c4;
  --line-strong: #b7b0a2;
  --text: #1f1d17;
  --muted: #665f52;
  --teal: #0f766e;
  --teal-soft: #d9efeb;
  --amber: #b45309;
  --amber-soft: #f6ead8;
  --rose: #9f1239;
  --rose-soft: #f7dde5;
  --green: #166534;
  --green-soft: #ddefdf;
  --shadow: 0 14px 30px rgba(49, 44, 35, 0.08);
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

button,
.nav-link,
input,
select,
textarea {
  font: inherit;
}

button,
.nav-link {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  padding: 10px 12px;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
}

body[data-sidebar-collapsed="true"] .app-shell {
  grid-template-columns: 76px minmax(0, 1fr);
}

.sidebar {
  background: #f1ede4;
  border-right: 1px solid var(--line);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

body[data-sidebar-collapsed="true"] .sidebar {
  padding: 16px 10px;
  gap: 12px;
}

.sidebar-toggle {
  width: 100%;
  padding: 8px 10px;
  background: var(--surface);
  font-size: 13px;
  text-align: center;
}

body[data-sidebar-collapsed="true"] .sidebar-toggle {
  padding: 8px 4px;
}

.brand-block h1,
.workspace-header h2,
.panel-header h3,
.sidebar-panel h2 {
  margin: 0;
}

.brand-block {
  display: grid;
  gap: 8px;
}

body[data-sidebar-collapsed="true"] .brand-block > * {
  display: none;
}

body[data-sidebar-collapsed="true"] .brand-block::before {
  content: "AI";
  display: grid;
  place-items: center;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-alt);
  font-weight: 800;
  color: #0c4f4b;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
  color: var(--muted);
}

.supporting-copy,
.sidebar-panel p,
.field-help,
.empty-state p,
.section-copy,
.json-help,
.workspace-subtitle {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.nav-list {
  display: grid;
  gap: 8px;
}

.nav-button {
  padding: 12px 14px;
  text-align: left;
  background: var(--surface-alt);
}

body[data-sidebar-collapsed="true"] .nav-button {
  padding: 10px 4px;
  text-align: center;
  font-size: 14px;
}

.nav-link {
  display: block;
  text-decoration: none;
}

.nav-button.active {
  border-color: var(--teal);
  background: var(--teal-soft);
  color: #0c4f4b;
}

.sidebar-panel {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.7);
}

body[data-sidebar-collapsed="true"] .sidebar-panel {
  display: none;
}

.status-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.mono {
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 13px;
}

.workspace {
  min-width: 0;
  padding: 24px;
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 16px;
}

.workspace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

body[data-view="library"] .workspace-header {
  border-color: var(--teal);
}

body[data-view="analysis"] .workspace-header {
  border-color: var(--teal);
}

body[data-view="reader"] .workspace-header {
  border-color: var(--teal);
}

body[data-view="import"] .workspace-header {
  border-color: var(--amber);
}

body[data-view="catalog"] .workspace-header {
  border-color: var(--line-strong);
}

body[data-view="review"] .workspace-header {
  border-color: var(--green);
}

body[data-view="workflows"] .workspace-header {
  border-color: var(--rose);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

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

.auth-user {
  color: var(--muted);
  font-size: 13px;
}

.auth-panel {
  max-width: 520px;
}

.header-nav-link {
  padding: 10px 14px;
  text-align: center;
  background: var(--surface);
  white-space: nowrap;
}

.banner {
  min-height: 24px;
}

.banner-message {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.banner-message.info {
  border-color: var(--teal);
  background: var(--teal-soft);
}

.banner-message.success {
  border-color: var(--green);
  background: var(--green-soft);
}

.banner-message.error {
  border-color: var(--rose);
  background: var(--rose-soft);
}

.view-root {
  min-width: 0;
}

.library-layout,
.analysis-layout,
.reader-layout,
.catalog-layout,
.import-layout,
.review-layout,
.workflow-layout {
  display: grid;
  gap: 16px;
}

.library-layout {
  display: flex;
  align-items: stretch;
  --detail-width: 420px;
}

.reader-layout {
  grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  align-items: start;
}

.reader-main-stack {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.reader-control-panel,
.reader-index-panel {
  position: sticky;
  top: 12px;
  align-self: start;
}

.reader-toc {
  display: grid;
  gap: 10px;
  max-height: 42vh;
  overflow: auto;
  padding-right: 2px;
}

.reader-current-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 12px;
}

.reader-current-list summary {
  cursor: pointer;
  font-weight: 700;
}

.reader-current-list[open] summary {
  margin-bottom: 10px;
}

.reader-toc-chapter {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 10px;
}

.reader-toc-chapter summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 700;
}

.reader-toc-chapter small,
.reader-index-item small {
  color: var(--muted);
}

.reader-toc-button,
.reader-index-item {
  width: 100%;
  text-align: left;
  display: grid;
  gap: 4px;
  border-color: var(--line);
  background: var(--surface-alt);
}

.reader-toc-button {
  grid-template-columns: minmax(0, 1fr) auto;
  margin-top: 8px;
  padding: 9px 10px;
}

.reader-toc-button.active,
.reader-index-item.active {
  border-color: var(--teal);
  background: var(--teal-soft);
}

.reader-index-list {
  display: grid;
  gap: 8px;
  max-height: 30vh;
  overflow: auto;
  padding-right: 2px;
}

.reader-index-item {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  padding: 10px;
}

.reader-index-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-weight: 700;
  font-size: 12px;
}

.reader-index-item span:last-child {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.reader-page-toolbar {
  align-items: center;
}

.reader-page-actions {
  align-items: center;
}

.reader-location-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.reader-location-strip span {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-alt);
}

.reader-page-stack,
.reader-page-spread {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.reader-page {
  min-height: 0;
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffdf8;
}

.reader-page h4 {
  margin: 0;
  font-size: 18px;
}

.reader-solution-page {
  background: #fbfcf7;
}

.reader-answer-block {
  display: grid;
  gap: 8px;
}

.reader-bottom-actions {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.catalog-layout {
  grid-template-columns: minmax(0, 1.3fr) minmax(340px, 0.92fr);
  align-items: start;
}

.library-main-panel {
  flex: 1 1 0;
}

.library-detail-pane {
  min-width: 0;
  display: flex;
  flex: 0 0 min(var(--detail-width), 60vw);
  max-width: min(var(--detail-width), 60vw);
}

.library-detail-pane > .panel,
.library-detail-pane > div > .panel,
.library-detail-pane > div.panel,
.library-detail-pane > section.panel {
  width: 100%;
}

.detail-resizer {
  flex: 0 0 10px;
  width: 10px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  position: relative;
  align-self: stretch;
  cursor: col-resize;
}

.detail-resizer::before {
  content: "";
  position: absolute;
  inset: 0 3px;
  border-radius: 999px;
  background: var(--line-strong);
  opacity: 0.55;
}

.detail-resizer:hover::before,
.detail-resizer:focus-visible::before {
  background: var(--teal);
  opacity: 1;
}

.detail-resizer:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.library-header-meta {
  align-items: center;
  justify-content: flex-end;
}

.compact-button {
  padding: 8px 12px;
  white-space: nowrap;
}

.import-layout {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
}

.review-layout {
  grid-template-columns: minmax(0, 1fr) minmax(380px, 0.92fr);
}

.workflow-layout {
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.78fr);
}

.analysis-layout {
  grid-template-columns: minmax(0, 1.24fr) minmax(360px, 0.76fr);
  align-items: start;
}

.analysis-side-stack {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.analysis-metrics {
  grid-template-columns: repeat(5, minmax(120px, 1fr));
}

.analysis-action-row {
  align-items: center;
}

.analysis-table-wrap {
  max-height: 66vh;
}

.analysis-table {
  min-width: 960px;
}

.analysis-col-problem {
  min-width: 300px;
  width: 38%;
}

.analysis-col-status {
  min-width: 220px;
  width: 24%;
}

.analysis-col-quality,
.analysis-col-time,
.analysis-col-action {
  min-width: 120px;
  white-space: nowrap;
}

.analysis-statement-preview {
  margin: 10px 0 0;
  line-height: 1.6;
}

.compact-workflow-list {
  max-height: 360px;
  overflow: auto;
}

.workflow-output-stack {
  display: grid;
  gap: 16px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  min-width: 0;
}

.panel-header,
.panel-body {
  padding: 16px;
}

.panel-header {
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.panel-header-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
}

.chip.teal {
  background: var(--teal-soft);
  border-color: var(--teal);
  color: #0c4f4b;
}

.chip.amber {
  background: var(--amber-soft);
  border-color: var(--amber);
  color: #7a3d09;
}

.chip.rose {
  background: var(--rose-soft);
  border-color: var(--rose);
  color: #7e1030;
}

.chip.green {
  background: var(--green-soft);
  border-color: var(--green);
  color: #0f4d28;
}

.toolbar-grid,
.detail-grid,
.inline-grid,
.filters-grid {
  display: grid;
  gap: 12px;
}

.select-filter-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 14px;
}

.filter-groups {
  display: grid;
  gap: 14px;
}

.filter-group {
  display: grid;
  gap: 8px;
}

.filter-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip-button {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  color: var(--muted);
}

.filter-chip-button.active {
  background: var(--teal-soft);
  border-color: var(--teal);
  color: #0c4f4b;
}

.filters-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.filters-grid > label {
  display: grid;
  gap: 8px;
  min-width: 0;
  align-content: start;
}

.filters-grid > button {
  align-self: end;
  min-height: 40px;
}

.wide-field {
  grid-column: 1 / -1;
}

.detail-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.inline-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.field-group {
  display: grid;
  gap: 8px;
}

.field-group.full {
  grid-column: 1 / -1;
}

.field-label {
  font-weight: 600;
  font-size: 14px;
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.column-chooser {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-alt);
  padding: 12px 14px;
}

.filter-disclosure {
  background: var(--surface-alt);
}

.filter-disclosure summary {
  color: var(--text);
}

.column-chooser summary {
  cursor: pointer;
  font-weight: 600;
}

.column-chooser-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.table-pagination-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.pagination-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-size-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-size-control select {
  width: auto;
  min-width: 84px;
}

.page-size-control input[type="number"] {
  width: 72px;
  min-width: 72px;
}

.column-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.primary-button {
  background: var(--teal);
  border-color: var(--teal);
  color: #f7f7f2;
  padding: 10px 14px;
}

.secondary-button,
.danger-button,
.neutral-button {
  padding: 10px 14px;
}

.danger-button {
  border-color: var(--rose);
  color: #7e1030;
  background: var(--rose-soft);
}

.neutral-button {
  background: var(--surface-alt);
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.table-wrap table {
  min-width: 0;
}

.table-wrap tr.selected-row {
  background: var(--teal-soft);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(31, 29, 23, 0.42);
}

.modal-panel {
  width: min(1280px, calc(100vw - 48px));
  max-height: calc(100vh - 48px);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 24px 60px rgba(31, 29, 23, 0.28);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}

.paper-picker-body {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.85fr);
  gap: 16px;
  padding: 16px;
}

.paper-picker-main,
.paper-picker-detail-pane {
  min-height: 0;
  overflow: auto;
}

.paper-picker-filter-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.paper-picker-table-wrap {
  max-height: 46vh;
}

.paper-picker-detail-pane {
  border-left: 1px solid var(--line);
  padding-left: 16px;
}

.paper-picker-detail {
  display: grid;
  gap: 12px;
}

.paper-picker-detail .detail-grid {
  grid-template-columns: 1fr;
}

.source-picker-field {
  display: grid;
  gap: 8px;
}

.paper-draft-block .actions-row {
  margin-top: 12px;
}

.paper-draft-table-wrap {
  max-height: 360px;
}

.paper-iterate-form {
  margin-top: 16px;
}

.nested-detail {
  margin-top: 12px;
}

.compact-header {
  padding: 0 0 12px;
  border-bottom: 1px solid var(--line);
}

.compact-pill-row .chip {
  padding: 4px 8px;
}

.library-table,
.catalog-table {
  min-width: 100%;
  table-layout: auto;
}

th,
td {
  min-width: 0;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

thead th {
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 1;
}

tbody tr {
  cursor: pointer;
}

tbody tr.selected {
  background: #eef3f2;
}

tbody tr:hover {
  background: #f6f7f1;
}

.statement-cell {
  display: grid;
  gap: 6px;
}

.library-col-select,
.library-col-action,
.catalog-col-action,
.catalog-col-type,
.library-col-review,
.library-col-created_at {
  white-space: nowrap;
}

.library-col-select {
  width: 56px;
}

.library-col-problem {
  min-width: 280px;
  width: 40%;
}

.library-col-source {
  min-width: 150px;
  width: 16%;
}

.library-col-rights {
  min-width: 180px;
  width: 19%;
}

.library-col-review {
  min-width: 120px;
  width: 11%;
}

.library-col-created_at {
  min-width: 132px;
  width: 12%;
}

.library-col-action {
  width: 96px;
}

.catalog-col-item {
  min-width: 300px;
  width: 38%;
}

.catalog-col-type {
  min-width: 120px;
  width: 12%;
}

.catalog-col-contest {
  min-width: 220px;
  width: 24%;
}

.catalog-col-status {
  min-width: 180px;
  width: 18%;
}

.catalog-col-action {
  width: 96px;
}

.catalog-title-cell {
  min-width: 260px;
}

.catalog-title-main {
  display: block;
  line-height: 1.5;
}

.catalog-title-sub {
  margin-top: 4px;
}

.catalog-inline-meta {
  align-items: flex-start;
}

.catalog-detail-panel {
  position: sticky;
  top: 12px;
  align-self: start;
}

.catalog-note {
  margin: 0;
}

.table-truncate {
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-cell {
  color: var(--muted);
}

td .pill-row {
  align-items: flex-start;
}

.statement-snippet {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.rich-snippet {
  display: inline;
}

.statement-snippet mjx-container,
.analysis-statement-preview mjx-container {
  max-width: 100%;
}

.meta-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.detail-section {
  display: grid;
  gap: 12px;
}

.detail-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-alt);
  padding: 12px;
  display: grid;
  gap: 8px;
}

.detail-block h4,
.empty-state h3 {
  margin: 0;
}

.json-box,
.code-box {
  margin: 0;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  overflow: auto;
  max-height: 260px;
  line-height: 1.5;
}

.rich-content {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  line-height: 1.65;
}

.rich-content p,
.rich-content ul,
.rich-content ol {
  margin: 0;
}

.rich-content ul,
.rich-content ol {
  padding-left: 20px;
}

.rich-content h4 {
  margin: 0;
}

.rich-content > :first-child {
  margin-top: 0;
}

.rich-content > :last-child {
  margin-bottom: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin: 0;
}

.markdown-body pre {
  margin: 0;
}

.markdown-body blockquote {
  margin: 0;
  padding-left: 12px;
  border-left: 3px solid var(--line);
  color: var(--muted);
}

.markdown-body section {
  margin: 0;
}

.markdown-body mjx-container {
  max-width: 100%;
}

.markdown-body mjx-container[display="true"] {
  margin: 0.35em 0;
  padding: 0.1em 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.empty-copy {
  color: var(--muted);
}

.inline-code {
  font-family: Consolas, "SFMono-Regular", monospace;
  background: #f6f3ea;
  border-radius: 4px;
  padding: 1px 6px;
}

.math-inline,
.math-block {
  font-family: "Cambria Math", "Times New Roman", serif;
  background: #fbf8ef;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.math-inline {
  display: inline-block;
  padding: 1px 6px;
}

.math-block {
  padding: 12px 14px;
  overflow-x: auto;
}

.rich-code {
  max-height: none;
}

.problem-image-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.problem-image-card {
  margin: 0;
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.problem-image-card a {
  display: block;
}

.problem-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: contain;
  border-radius: 4px;
  background: #f7f4eb;
}

.problem-image-frame {
  display: block;
  width: 100%;
  min-height: 320px;
  border: 0;
  border-radius: 4px;
  background: #f7f4eb;
}

.problem-image-card figcaption {
  display: grid;
  gap: 6px;
}

.path-sequence,
.transformation-list,
.solution-step-list,
.similarity-list {
  display: grid;
  gap: 10px;
}

.path-sequence {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.path-sequence-item {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.path-sequence-node {
  flex: 1 1 auto;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--teal);
  border-radius: var(--radius);
  background: #fff;
  font-weight: 600;
}

.path-sequence-arrow {
  color: var(--muted);
  font-size: 18px;
  flex: 0 0 auto;
}

.transformation-card,
.solution-step-card,
.similarity-card {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.transformation-card {
  grid-template-columns: auto 1fr;
  align-items: start;
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--teal-soft);
  color: #0c4f4b;
  font-size: 12px;
  font-weight: 700;
}

.solution-step-conclusion {
  padding: 10px 12px;
  border-radius: var(--radius);
  background: #f8f5ed;
  border: 1px dashed var(--line-strong);
}

.compact-score-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compact-card {
  padding: 10px;
}

.corpus-overview-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.corpus-columns {
  align-items: start;
}

.chip-button {
  cursor: pointer;
}

.pill-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.stats-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.overview-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.stats-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fffdf8 0%, #f7f4eb 100%);
  padding: 12px;
  display: grid;
  gap: 6px;
}

.stat-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.stat-value {
  font-size: 18px;
  line-height: 1.2;
}

.stat-value-id {
  font-size: 13px;
  overflow-wrap: anywhere;
}

.empty-state {
  padding: 28px;
  display: grid;
  place-items: center;
  text-align: center;
  min-height: 220px;
  gap: 8px;
}

.compact-empty-state {
  min-height: 0;
  padding: 8px 0;
}

.catalog-view-stack {
  display: grid;
  gap: 20px;
}

.catalog-summary-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.catalog-summary-card {
  display: grid;
  gap: 6px;
  text-align: left;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #fffef9 0%, #f6f1e7 100%);
}

.catalog-summary-card:hover {
  border-color: var(--teal);
  background: linear-gradient(180deg, #fcfffd 0%, #eef7f4 100%);
}

.empty-state strong {
  color: var(--text);
}

.split-stack {
  display: grid;
  gap: 16px;
}

.list-stack {
  display: grid;
  gap: 10px;
}

.workflow-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-alt);
  padding: 12px;
  display: grid;
  gap: 8px;
  cursor: pointer;
}

.workflow-item.active {
  border-color: var(--amber);
  background: var(--amber-soft);
}

.review-item.active {
  border-color: var(--green);
  background: var(--green-soft);
}

.row-compact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.detail-columns {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.detail-columns-balanced {
  align-items: start;
}

.detail-note {
  display: grid;
  gap: 8px;
}

.detail-note-emphasis {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.detail-stack {
  display: grid;
  gap: 12px;
}

.nested-detail-block {
  background: #fff;
}

.small-copy {
  font-size: 13px;
  color: var(--muted);
}

.review-card {
  text-align: left;
}

.review-item-header {
  display: grid;
  gap: 6px;
}

.review-preview {
  margin: 0;
  color: var(--text);
  line-height: 1.55;
  font-size: 14px;
}

.review-item-body {
  margin-bottom: 2px;
}

.review-list {
  max-height: 980px;
  overflow: auto;
  padding-right: 2px;
}

.export-result-block {
  gap: 10px;
}

.export-preview {
  max-height: 320px;
}

.review-json-box {
  max-height: 420px;
}

.json-disclosure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 12px;
}

.json-disclosure summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 600;
}

.json-disclosure[open] summary {
  margin-bottom: 10px;
}

.checklist-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.check-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.check-item.pass {
  border-color: var(--green);
}

.check-item.warn {
  border-color: var(--amber);
}

.check-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--amber);
  flex: 0 0 auto;
}

.check-item.pass .check-dot {
  background: var(--green);
}

.meta-list {
  display: grid;
  gap: 8px;
}

.meta-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.meta-item-label {
  color: var(--muted);
  font-size: 13px;
}

.meta-item-value {
  text-align: right;
  overflow-wrap: anywhere;
}

.candidate-score-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.paper-layout,
.lecture-layout,
.generated-layout {
  display: grid;
  gap: 18px;
}

.paper-layout .panel-header,
.lecture-layout .panel-header,
.generated-layout .panel-header {
  flex-wrap: wrap;
}

.paper-layout .panel-header > div:first-child,
.lecture-layout .panel-header > div:first-child,
.generated-layout .panel-header > div:first-child {
  flex: 1 1 260px;
  min-width: 0;
}

.paper-layout .panel-body,
.lecture-layout .panel-body,
.generated-layout .panel-body {
  gap: 16px;
}

.paper-layout .detail-block,
.lecture-layout .detail-block,
.generated-layout .detail-block {
  padding: 16px;
  gap: 10px;
}

.paper-layout .json-box,
.lecture-layout .json-box,
.generated-layout .json-box {
  max-height: 360px;
}

.paper-layout .table-wrap table {
  min-width: 980px;
  table-layout: auto;
}

.lecture-layout .table-wrap table {
  min-width: 720px;
  table-layout: auto;
}

.generated-layout {
  grid-template-columns: minmax(0, 1.35fr) minmax(340px, 0.65fr);
}

.generated-layout .table-wrap table {
  min-width: 980px;
  table-layout: auto;
}

.paper-layout th,
.paper-layout td,
.lecture-layout th,
.lecture-layout td,
.generated-layout th,
.generated-layout td {
  overflow-wrap: anywhere;
}

.paper-layout .table-truncate,
.generated-layout .table-truncate {
  max-width: 240px;
}

.paper-layout .actions-row,
.lecture-layout .actions-row,
.generated-layout .actions-row {
  align-items: center;
}

.paper-layout .actions-row button,
.lecture-layout .actions-row button,
.generated-layout .actions-row button {
  white-space: nowrap;
}

.generated-detail-panel {
  position: sticky;
  top: 12px;
}

.review-action-panel {
  order: -1;
  position: sticky;
  top: 12px;
  z-index: 2;
  box-shadow: var(--shadow);
}

.review-comment-input {
  min-height: 84px;
}

.decision-primary-row {
  margin-top: 2px;
}

.decision-launch-button {
  width: 100%;
  min-height: 44px;
}

.decision-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.decision-grid-main {
  margin-top: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.decision-grid-secondary {
  margin-top: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.library-layout[data-detail-size="narrow"] .library-detail-pane .detail-grid {
  grid-template-columns: 1fr;
}

.library-layout[data-detail-size="narrow"] .library-detail-pane .panel-header {
  flex-wrap: wrap;
}

.library-layout[data-detail-size="narrow"] .library-detail-pane .panel-header-meta {
  width: 100%;
  justify-content: flex-start;
}

.file-input {
  padding: 8px 0;
}

@media (max-width: 1180px) {
  .library-layout,
  .analysis-layout,
  .reader-layout,
  .catalog-layout,
  .import-layout,
  .review-layout,
  .paper-layout,
  .lecture-layout,
  .generated-layout,
  .workflow-layout {
    grid-template-columns: 1fr;
  }

  .library-layout {
    display: grid;
  }

  .library-detail-pane {
    max-width: none;
  }

  .catalog-detail-panel {
    position: static;
  }

  .generated-detail-panel {
    position: static;
  }

  .reader-control-panel,
  .reader-index-panel {
    position: static;
  }

  .detail-resizer {
    display: none;
  }

  .select-filter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .paper-picker-body {
    grid-template-columns: 1fr;
  }

  .paper-picker-filter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .paper-picker-detail-pane {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 16px;
  }

  .analysis-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .modal-backdrop {
    padding: 10px;
  }

  .modal-panel {
    width: calc(100vw - 20px);
    max-height: calc(100vh - 20px);
  }

  .paper-picker-filter-grid {
    grid-template-columns: 1fr;
  }

  body[data-sidebar-collapsed="true"] .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .filters-grid,
  .detail-grid,
  .inline-grid,
  .detail-columns,
  .reader-page-stack,
  .stats-grid,
  .overview-grid,
  .checklist-grid,
  .candidate-score-grid,
  .stats-grid.compact,
  .decision-grid {
    grid-template-columns: 1fr;
  }

  .workspace {
    padding: 16px;
  }

  .analysis-metrics {
    grid-template-columns: 1fr;
  }

  th,
  td {
    font-size: 13px;
  }
}