:root {
  color-scheme: light;
  --bg: #ffffff;
  --panel: #f7f9fc;
  --panel-strong: #eef2f7;
  --line: #d8dee8;
  --line-soft: #e8edf4;
  --text: #17202e;
  --muted: #647187;
  --faint: #8d98aa;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --green: #17803d;
  --amber: #b45309;
  --red: #b42318;
  --shadow: 0 16px 40px rgba(19, 31, 49, 0.12);
  --radius: 8px;
  --reader-scale: 1;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button,
input {
  font: inherit;
}

svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 64px 1fr;
}

.topbar {
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto;
  align-items: center;
  gap: 18px;
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.96);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--blue);
  background: #fff;
}

.brand-title {
  font-size: 14px;
  font-weight: 700;
  line-height: 18px;
}

.document-title {
  color: var(--muted);
  font-size: 12px;
  line-height: 16px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 42vw;
}

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

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 28px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  background: #fff;
}

.status-pill span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--faint);
}

.status-pill.ok span {
  background: var(--green);
}

.status-pill.warn span {
  background: var(--amber);
}

.status-pill.bad span {
  background: var(--red);
}

.top-actions,
.toolbar-cluster,
.pager {
  display: flex;
  align-items: center;
  gap: 8px;
}

.button,
.icon-button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  padding: 0 12px;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.button {
  font-size: 13px;
  font-weight: 650;
}

.button:hover,
.icon-button:hover {
  border-color: #b9c4d3;
  background: #f9fbfe;
}

.button:disabled,
.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.button.primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.button.primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
}

.button.secondary {
  color: var(--blue);
}

.button.compact {
  min-height: 32px;
  padding: 0 10px;
  font-size: 12px;
}

.button.danger {
  color: var(--red);
}

.button.full {
  width: 100%;
}

.icon-button {
  width: 36px;
  padding: 0;
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: 244px minmax(0, 1fr) 360px;
  height: calc(100vh - 64px);
  min-height: 0;
}

.source-rail {
  border-right: 1px solid var(--line);
  background: var(--panel);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: calc(100vh - 64px);
}

.upload-zone input {
  display: none;
}

.url-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 36px;
  gap: 8px;
}

.url-form input,
.search-field input {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  height: 36px;
  padding: 0 10px;
  background: #fff;
  color: var(--text);
  outline: none;
}

.url-form input:focus,
.search-field input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.rail-heading {
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  text-transform: uppercase;
  margin-top: 2px;
}

.document-list {
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.document-row {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  text-align: left;
  border-radius: 8px;
  padding: 4px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 30px;
  align-items: center;
  gap: 4px;
}

.document-row:hover,
.document-row.active {
  background: #fff;
  border-color: var(--line);
}

.document-open,
.document-delete {
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.document-open {
  min-width: 0;
  padding: 6px;
  text-align: left;
}

.document-delete {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  color: var(--faint);
}

.document-delete:hover {
  background: #fff1f0;
  color: var(--red);
}

.document-row-title {
  font-size: 13px;
  font-weight: 650;
  line-height: 18px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.document-row-meta {
  color: var(--muted);
  font-size: 12px;
  line-height: 16px;
  margin-top: 2px;
}

.reader-pane {
  min-width: 0;
  min-height: calc(100vh - 64px);
  display: grid;
  grid-template-rows: 52px 1fr;
  position: relative;
}

.reader-toolbar {
  border-bottom: 1px solid var(--line);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 14px;
}

.pager {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.search-field {
  position: relative;
  display: flex;
  align-items: center;
}

.search-field svg {
  position: absolute;
  left: 10px;
  color: var(--faint);
}

.search-field input {
  width: 220px;
  padding-left: 32px;
}

.viewer-grid {
  display: grid;
  grid-template-rows: minmax(220px, 36vh) minmax(0, 1fr);
  min-height: 0;
  background: #fff;
}

.viewer-grid.pdf-mode {
  grid-template-rows: minmax(0, 1fr);
}

.pdf-preview {
  width: 100%;
  height: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  display: none;
}

.pdf-preview.active {
  display: block;
}

.viewer-grid.pdf-mode .pdf-preview {
  border-bottom: 0;
}

.viewer-grid.pdf-mode .reader-surface {
  display: none;
}

.reader-surface {
  overflow: auto;
  padding: 34px min(7vw, 72px);
  font-size: calc(16px * var(--reader-scale));
  line-height: 1.72;
  min-width: 0;
}

.page-label {
  color: var(--blue);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.page-text {
  max-width: 860px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

mark {
  background: #fff2b8;
  color: inherit;
  padding: 0 1px;
}

.empty-state {
  min-height: 46vh;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 10px;
  color: var(--muted);
  text-align: center;
}

.empty-state h1 {
  margin: 0;
  color: var(--text);
  font-size: 28px;
  line-height: 34px;
}

.empty-state p {
  margin: 0;
  font-size: 14px;
}

.empty-mark {
  width: 52px;
  height: 52px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(#fff, #f3f6fa);
}

.selection-popup {
  position: fixed;
  z-index: 50;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
  max-width: calc(100vw - 24px);
}

.selection-popup[hidden] {
  display: none;
}

.analysis-pane {
  border-left: 1px solid var(--line);
  background: var(--panel);
  min-height: calc(100vh - 64px);
  overflow: auto;
  padding: 16px;
}

.analysis-section {
  border-bottom: 1px solid var(--line);
  padding: 0 0 16px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 12px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.section-body,
.term-list,
.question-list,
.job-list,
.source-list {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.term-item,
.job-item,
.source-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 10px;
  margin-bottom: 8px;
}

.term-item strong,
.job-item strong,
.source-item strong {
  display: block;
  color: var(--text);
  font-size: 13px;
  margin-bottom: 4px;
}

.question-list {
  margin: 0;
  padding-left: 20px;
}

.question-list li {
  margin-bottom: 8px;
}

.job-status {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--panel-strong);
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  margin-bottom: 7px;
}

.job-status.done {
  color: var(--green);
}

.job-status.failed,
.job-status.failed_schema {
  color: var(--red);
}

.source-item a {
  color: var(--blue);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.toast-stack {
  position: fixed;
  right: 18px;
  bottom: 18px;
  display: grid;
  gap: 8px;
  z-index: 80;
}

.toast {
  width: min(360px, calc(100vw - 36px));
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  background: #fff;
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 13px;
}

@media (max-width: 1180px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .status-strip {
    grid-column: 1 / -1;
    order: 3;
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .app-shell {
    grid-template-rows: auto 1fr;
  }

  .workspace {
    grid-template-columns: 220px minmax(0, 1fr);
    height: auto;
  }

  .analysis-pane {
    grid-column: 1 / -1;
    min-height: auto;
    border-left: 0;
    border-top: 1px solid var(--line);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .analysis-section {
    margin: 0;
  }
}

@media (max-width: 760px) {
  .topbar {
    grid-template-columns: 1fr;
    padding: 12px;
    gap: 10px;
  }

  .top-actions,
  .status-strip {
    width: 100%;
    overflow-x: auto;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .source-rail {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .reader-pane {
    min-height: 70vh;
  }

  .reader-toolbar {
    align-items: stretch;
    flex-direction: column;
    padding: 10px;
  }

  .toolbar-cluster,
  .pager {
    justify-content: space-between;
    width: 100%;
  }

  .search-field {
    flex: 1;
  }

  .search-field input {
    width: 100%;
  }

  .viewer-grid {
    grid-template-rows: 220px minmax(0, 1fr);
  }

  .reader-surface {
    padding: 24px 18px;
  }

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