/* Approved use-case concept, adapted to the real API. PDF page surfaces keep
   their original colours; application chrome follows the device appearance. */
:root {
  color-scheme: light dark;
  --ink: light-dark(#263a30, #edf2eb);
  --muted: light-dark(#647469, #aebbb0);
  --canvas: light-dark(#efeee8, #191d1a);
  --surface: light-dark(#fff, #272d29);
  --surface-soft: light-dark(#f0f2ec, #2e3630);
  --line: light-dark(#dce3da, #414b43);
  --line-strong: light-dark(#bdc9bd, #626e63);
  --accent: light-dark(#285d44, #badab2);
  --accent-dark: light-dark(#285d44, #badab2);
  --accent-soft: light-dark(#eaf1e6, #344535);
  --journey-on-accent: light-dark(#fff, #203926);
  --journey-background: light-dark(#f6f5f0, #1f2421);
  --danger: light-dark(#a2382b, #ffc2b7);
  --danger-soft: light-dark(#fff1ec, #452d29);
  --quiet-ink: var(--ink); --quiet-muted: var(--muted); --quiet-canvas: var(--canvas);
  --quiet-surface: var(--surface); --quiet-soft: var(--surface-soft); --quiet-line: var(--line);
  --quiet-line-strong: var(--line-strong); --quiet-accent: var(--accent); --quiet-accent-dark: var(--accent);
  --quiet-accent-soft: var(--accent-soft); --quiet-danger: var(--danger);
}
body { background: var(--canvas); color: var(--ink); font-weight: 400; }
[hidden] { display: none !important; }
h1, h2, h3, strong { font-weight: 500; }
button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.topbar { position: relative; width: min(1240px, calc(100% - 48px)); margin: 36px auto 0; padding: 22px 28px; gap: 20px; flex-wrap: wrap; border: 1px solid var(--line); border-radius: 20px 20px 0 0; background: var(--surface); backdrop-filter: none; }
.brand { font-weight: 500; font-size: 16px; text-transform: lowercase; }
.brand-mark, .auth-symbol { font-family: Georgia, serif; font-size: 30px; line-height: 1; font-weight: 400; color: var(--journey-on-accent); background: var(--accent); box-shadow: none; }
.nav-actions { flex-wrap: wrap; gap: 6px; }
.button { min-height: 42px; padding: 10px 15px; border-radius: 10px; font-size: 13px; font-weight: 500; white-space: normal; }
.button-primary { color: var(--journey-on-accent); background: var(--accent); border-color: var(--accent); box-shadow: none; }
.button-primary:hover:not(:disabled) { color: var(--journey-on-accent); background: var(--accent); filter: brightness(.96); }
.button-secondary { color: var(--ink); background: var(--surface); border-color: var(--line); }
.button-quiet { color: var(--muted); background: transparent; border-color: transparent; }
.button-quiet:hover:not(:disabled), .button-secondary:hover:not(:disabled) { color: var(--ink); background: var(--surface-soft); border-color: var(--line); }
.button:disabled { cursor: not-allowed; opacity: .65; }
#main-content { width: min(1240px, calc(100% - 48px)); margin: 0 auto 40px; padding: 0; border: 1px solid var(--line); border-top: 0; border-radius: 0 0 20px 20px; background: var(--journey-background); overflow-wrap: anywhere; }
.eyebrow { font-size: 11px; font-weight: 400; letter-spacing: .11em; color: var(--muted); }
.journey-library { display: grid; grid-template-columns: 200px minmax(0, 1fr); min-height: 600px; }
.journey-sidebar { padding: 32px 20px; background: var(--surface-soft); border-right: 1px solid var(--line); }
.journey-sidebar > .eyebrow:not(:first-child) { margin-top: 32px; }
.journey-sidebar > .button { justify-content: flex-start; text-align: left; width: 100%; }
.journey-sidebar [aria-current='page'] { background: var(--accent-soft); color: var(--ink); }
.journey-sidebar > .journey-category { justify-content: space-between; gap: 8px; }
.category-count { font-variant-numeric: tabular-nums; flex-shrink: 0; color: var(--muted); }
.category-error { font-size: 12px; color: var(--danger); }
.category-catalogue { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr)); gap: 12px; margin: 20px 0; }
.category-template, .category-backfill { padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; font-size: 13px; }
.category-template p { overflow-wrap: anywhere; }
.category-custom { margin: 24px 0; }
.category-custom summary { cursor: pointer; margin-bottom: 18px; }
.category-custom .field input { width: 100%; }
.category-document-dialog { width: min(600px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); overflow: auto; }
.category-document-dialog .stack > * { min-width: 0; overflow-wrap: anywhere; }
#organization-category { width: 100%; min-width: 0; min-height: 44px; }
.organization-fields .field input { width: 100%; }
#organization-filename { display: block; padding: 12px; background: var(--surface-soft); border-radius: 9px; overflow-wrap: anywhere; }
.document-category { color: var(--accent); font-size: 12px; margin: 8px 0 0 44px; }
.category-review-label { display: inline-block; padding: 3px 8px; border: 1px solid var(--line); border-radius: 6px; color: var(--ink); background: var(--surface-soft); }
.category-review-label.needs-review { font-weight: 600; border-color: currentColor; }
.document-chips { flex-wrap: wrap; }
.document-chips .button + .button { margin-left: 12px; }
.journey-library-main { min-width: 0; padding: 34px; }
.documents-heading { margin-bottom: 24px; }
.documents-heading h1 { margin: 8px 0 0; font-size: 34px; font-weight: 500; }
.library-panel { background: transparent; border: 0; padding: 0; box-shadow: none; }
.search-input { border: 1px solid var(--line); border-radius: 14px; height: 56px; color: var(--ink); background: var(--surface); font-size: 15px; box-shadow: none; }
.search-input::placeholder { color: var(--muted); }
.search-options { margin-top: 5px; }
.search-options summary { color: var(--muted); }
.search-engine-select, #library-view, .organization-dialog select, .field input { color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 9px; padding: 8px 10px; max-width: 100%; }
.journey-view-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 24px 0 12px; font-size: 12px; }
.journey-view-bar > .journey-note { margin-right: auto; }
.journey-view-controls { display: flex; align-items: center; gap: 10px; min-width: 0; }
.journey-note { color: var(--muted); font-size: 12px; line-height: 1.6; }
.results-header h2 { font-size: 14px; font-weight: 500; }
.results-header { margin: 18px 0 10px; }
.journey-group { margin-bottom: 22px; }
.journey-group-title { color: var(--muted); font-size: 13px; margin: 22px 0 10px; }
.document-list { border: 1px solid var(--line); border-radius: 13px; overflow: hidden; background: var(--surface); }
.document-item { background: transparent; padding: 18px; gap: 8px 16px; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; grid-template-columns: minmax(0, 1fr) auto; box-shadow: none; }
.document-item:last-child { border-bottom: 0; }
.document-item:hover { background: var(--surface-soft); }
.document-details { min-width: 0; }
.document-heading > div { min-width: 0; }
.document-title { color: var(--ink); font-weight: 500; font-size: 14px; }
.document-title .button { padding: 0; min-height: 25px; color: var(--ink); text-align: left; justify-content: flex-start; background: transparent; border: 0; font-size: inherit; }
.document-title .button:hover { text-decoration: underline; }
.document-meta, .document-context { color: var(--muted); font-size: 12px; }
.document-type { color: var(--muted); }
.document-chips { grid-row: 2; grid-column: 1 / -1; margin-left: 44px; gap: 5px; }
.document-chips .button { min-height: 25px; padding: 2px 0; font-size: 11px; }
.document-actions { grid-row: 1; grid-column: 2; }
.file-icon { background: var(--accent-soft); border-color: var(--line); }
.file-icon::before, .file-icon::after { border-color: var(--muted); }
.empty-state { background: transparent; color: var(--ink); }
.empty-state p, .muted { color: var(--muted); }
.alert, .state-error { color: var(--danger); background: var(--danger-soft); }
.skeleton-row { background: var(--surface-soft); animation: none; }
.journey-footer { color: var(--muted); padding: 18px 28px; border-top: 1px solid var(--line); font-size: 11px; }
.journey-welcome { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 60px; padding: 70px 46px; }
.journey-welcome h1 { font-family: Georgia, 'Times New Roman', serif; font-size: clamp(35px, 4vw, 52px); line-height: 1.05; margin: 15px 0 24px; letter-spacing: -.045em; font-weight: 400; }
.journey-welcome .lede { font-size: 15px; line-height: 1.75; }
.journey-welcome-copy > .button { margin: 10px 8px 10px 0; }
.journey-welcome-example { padding: 28px; border-radius: 24px; background: var(--accent-soft); }
.journey-example { display: flex; align-items: center; gap: 15px; background: var(--surface); padding: 22px; border-radius: 14px; margin-top: 18px; }
.journey-example:nth-child(2) { transform: rotate(2deg); }
.journey-example:nth-child(3) { transform: rotate(-2deg); }
.journey-example small { display: block; color: var(--muted); font-size: 12px; margin-top: 4px; }
.journey-file-symbol { color: var(--accent); font-size: 11px; }
.upload-dialog { width: min(920px, calc(100vw - 40px)); max-height: calc(100dvh - 40px); overflow: auto; background: var(--journey-background); }
.upload-dialog-header { padding: 24px 28px; background: var(--surface); }
.journey-sources { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 32px; }
.journey-source { display: flex; flex-direction: column; gap: 12px; text-align: left; border: 1px solid var(--line); border-radius: 16px; padding: 24px; background: var(--surface); color: var(--ink); cursor: pointer; min-width: 0; }
.journey-source:not(:disabled):hover { border-color: var(--accent); background: var(--accent-soft); }
.journey-source:disabled { opacity: .65; cursor: not-allowed; }
.journey-source strong { font-size: 17px; }
.journey-source > span:not(.journey-source-mark), .journey-source small { font-size: 12px; color: var(--muted); }
.journey-source-mark { font-size: 24px; color: var(--accent); margin-bottom: 15px; }
.drop-zone { background: var(--surface); }
.journey-upload-files { margin: 12px 0; padding: 0; list-style: none; text-align: left; }
.journey-upload-files li { display: flex; align-items: start; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 13px; overflow-wrap: anywhere; }
.journey-upload-files small { flex-shrink: 0; color: var(--muted); }
.journey-upload-actions { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.upload-progress { height: auto; min-height: 24px; margin: 0; color: var(--muted); background: transparent; font-size: 13px; }
.file-picker:focus-within { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 9px; }
.journey-success { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; padding: 12px 16px; background: var(--accent-soft); border-radius: 12px; font-size: 13px; }
.journey-organization-dialog { width: min(960px, calc(100vw - 40px)); max-height: calc(100dvh - 40px); border: 1px solid var(--line); border-radius: 18px; padding: 32px; background: var(--journey-background); color: var(--ink); }
.journey-organization .eyebrow { margin-top: 24px; }
.journey-organization h1 { font-size: 32px; }
.journey-capabilities { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.journey-capabilities section { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 24px; font-size: 14px; }
.journey-capabilities h2 { font-size: 20px; }
.journey-soon { display: block; margin: 5px 0; text-align: left; }
.journey-capabilities .journey-note { margin-top: 20px; }
.organization-dialog { color: var(--ink); }
.preview-dialog { width: min(1200px, calc(100vw - 40px)); height: min(900px, calc(100dvh - 40px)); background: var(--journey-background); color: var(--ink); }
.preview-header { background: var(--surface); border-bottom: 1px solid var(--line); padding: 22px 26px; }
.journey-document-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; min-height: 0; }
.preview-body { background: var(--surface-soft); }
.journey-document-info { background: var(--surface); border-left: 1px solid var(--line); padding: 26px; overflow: auto; min-width: 0; }
.journey-document-info h3 { font-size: 18px; overflow-wrap: anywhere; }
.journey-document-info dl { display: grid; gap: 6px; margin: 25px 0; font-size: 13px; }
.journey-document-info dt { color: var(--muted); font-size: 11px; margin-top: 10px; }
.journey-document-info dd { margin: 0; overflow-wrap: anywhere; }
.journey-document-info > .button { margin: 8px 0; }
.journey-document-info > .journey-note { margin-top: 26px; }
.pdf-toolbar { background: var(--surface); border-color: var(--line); }
.auth-layout { padding: 45px 24px; }
.auth-card { background: var(--surface); color: var(--ink); border-color: var(--line); box-shadow: none; }
/* Precision Index's retrieval-first rows + Calm Workroom's soft surfaces.
   Categories are progressive disclosure on phones, never a wrapping rail. */
.category-picker { display: none; }
.category-picker-dialog { width: min(480px, calc(100vw - 24px)); height: min(680px, calc(100dvh - 24px)); max-width: none; max-height: none; padding: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; color: var(--ink); background: var(--surface); }
.category-picker-dialog::backdrop { background: rgb(17 25 20 / 45%); }
.category-picker-sheet { display: grid; grid-template-rows: auto auto auto auto minmax(0, 1fr) auto; height: 100%; min-height: 0; padding: 20px 16px 0; }
.category-picker-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.category-picker-heading .eyebrow { margin: 0 0 4px; }
.category-picker-heading h2 { margin: 0; font-size: 24px; }
.category-picker-search { position: relative; display: flex; align-items: center; }
.category-picker-search input { min-width: 0; width: 100%; height: 52px; padding: 0 72px 0 14px; font: inherit; font-size: 16px; color: var(--ink); border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); }
.category-picker-search input::-webkit-search-cancel-button { display: none; }
.category-picker-search .button { position: absolute; right: 4px; }
.category-picker-all { justify-content: flex-start; margin-top: 12px; }
.category-picker-options { overflow: auto; overscroll-behavior: contain; scrollbar-gutter: stable; padding: 3px; min-height: 0; }
.category-picker-group + .category-picker-group { border-top: 1px solid var(--line); }
.category-picker-group-title { margin: 0; font-size: 14px; }
.category-picker-group-title > span { display: block; padding: 12px; }
.category-picker-group-toggle { width: 100%; justify-content: space-between; gap: 12px; padding: 12px; font-weight: 600; text-align: left; }
.category-picker-group-toggle::after { content: '＋'; }
.category-picker-group-toggle[aria-expanded='true']::after { content: '−'; }
.category-picker-option { width: 100%; justify-content: space-between; gap: 16px; padding: 12px; text-align: left; border-radius: 10px; }
.category-picker-option > span:first-child { min-width: 0; overflow-wrap: anywhere; }
.category-picker-dialog [aria-pressed='true'] { color: var(--ink); background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.category-picker-dialog .button { min-height: 44px; }
.category-picker-sheet > .journey-note { margin: 10px 3px 6px; }
.category-picker-empty { padding: 16px 12px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.category-picker-footer { padding: 10px 0 max(10px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.category-picker-footer .button { width: 100%; }
body:has(.category-picker-dialog[open], .preview-dialog[open]) { overflow: hidden; }
@media (max-width: 900px) {
  .journey-library { grid-template-columns: 166px minmax(0, 1fr); }
  .journey-library-main { padding: 26px; }
  .journey-welcome { gap: 26px; padding: 45px 28px; }
  .journey-document-layout { grid-template-columns: minmax(0, 1fr) 245px; }
  .journey-document-info { padding: 18px; }
}
@media (max-width: 650px) {
  .topbar, #main-content { width: calc(100% - 24px); }
  .topbar { margin-top: 12px; padding: 8px 12px; gap: 8px; flex-wrap: nowrap; }
  .brand { min-height: 44px; gap: 7px; font-size: 14px; flex-shrink: 0; }
  #main-content { padding: 0; }
  #primary-nav { width: auto; min-width: 0; }
  .nav-actions { gap: 4px; flex-wrap: nowrap; }
  .nav-actions .button { padding: 8px; min-width: 44px; min-height: 44px; font-size: 13px; white-space: nowrap; }
  .nav-actions .nav-current, .nav-actions .nav-organization { display: none; }
  .journey-add-detail { display: none; }
  .journey-library { grid-template-columns: 1fr; }
  .journey-sidebar { display: none; }
  .journey-library-main { padding: 14px; }
  .documents-heading { margin: 0 0 12px; }
  .documents-heading .eyebrow { display: none; }
  .documents-heading h1 { margin: 0; font-size: 27px; }
  .search-box { gap: 0; }
  .search-input { font-size: 16px; height: 52px; padding-left: 42px; }
  .search-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
  .search-clear, .search-options summary { min-height: 44px; }
  .search-options { margin: 0; }
  .search-options summary { display: flex; align-items: center; gap: 8px; }
  .search-options summary::after { content: '⌄'; }
  .category-picker { display: flex; align-items: center; gap: 6px; min-width: 0; }
  .category-picker-trigger { flex: 1; min-width: 0; min-height: 48px; justify-content: space-between; gap: 10px; background: var(--surface); }
  .category-picker-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .category-picker-trigger.is-filtered { border-color: var(--accent); background: var(--accent-soft); }
  .category-picker-reset { flex: 0 0 auto; min-width: 48px; min-height: 48px; }
  .category-picker-dialog { width: 100%; height: min(720px, calc(100dvh - 12px)); margin: auto 0 0; border-radius: 20px 20px 0 0; }
  .journey-view-bar { margin: 0; }
  .journey-view-bar > .journey-note { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .search-options .search-engine-field, .search-options .journey-view-controls { display: grid; grid-template-columns: minmax(0, 1fr); gap: 6px; width: auto; margin: 0 4px 12px; font-size: 12px; }
  #library-view, .search-engine-select { width: 100%; min-height: 44px; font-size: 16px; }
  .results-header { align-items: flex-start; gap: 8px; margin: 8px 0; padding: 8px 4px; }
  .results-header h2 { min-width: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .results-header > .muted { flex-shrink: 0; font-size: 11px; }
  .document-item { padding: 14px 12px; grid-template-columns: minmax(0, 1fr); }
  .document-title { white-space: normal; overflow-wrap: anywhere; }
  .document-category { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .document-actions { grid-row: 2; grid-column: 1; margin-left: 44px; justify-content: flex-start; flex-wrap: wrap; }
  .document-actions .button { min-height: 44px; }
  .document-actions .button-quiet { width: auto; font-size: 12px; padding: 6px 10px; }
  .document-actions .button-quiet::after { content: none; }
  .document-chips { grid-row: 3; gap: 4px; }
  .document-chips .button { min-height: 44px; padding: 8px 4px; text-align: left; }
  .document-chips .button + .button { margin-left: 0; }
  .journey-welcome { grid-template-columns: 1fr; padding: 36px 24px; }
  .journey-welcome h1 { font-size: 38px; }
  .journey-welcome-example { padding: 20px; }
  .journey-sources { grid-template-columns: 1fr; padding: 20px; }
  .journey-source { gap: 8px; padding: 20px; }
  .journey-source-mark { margin: 0; }
  .journey-capabilities { grid-template-columns: 1fr; }
  .journey-organization-dialog { padding: 22px; }
  /* Reading Desk: the close/header and page navigation stay in view while
     pages scroll. Metadata remains below the reading surface on phones. */
  .preview-dialog { width: 100vw; height: 100dvh; max-height: 100dvh; margin: 0; border-radius: 0; border: 0; }
  .journey-document-layout { display: block; overflow: auto; }
  .preview-body { min-height: 0; height: calc(100dvh - 120px); }
  .preview-pdf { overflow: hidden; }
  .pdf-page-stage { min-height: 0; overflow: auto; overscroll-behavior: contain; }
  .pdf-toolbar { flex-wrap: nowrap; gap: 8px; padding: 8px; }
  .pdf-toolbar .button { min-height: 44px; min-width: 44px; }
  .pdf-page-status { min-width: 86px; }
  .journey-document-info { border-left: 0; border-top: 1px solid var(--line); overflow: visible; }
  .preview-header { display: grid; grid-template-columns: minmax(0, 1fr) auto; padding: max(10px, env(safe-area-inset-top)) 12px 10px; gap: 8px; }
  .preview-header h2 { text-overflow: ellipsis; white-space: nowrap; }
  .preview-actions { gap: 4px; }
  .preview-header .button, .preview-header .preview-more summary { min-width: 44px; width: 44px; min-height: 44px; }
  .preview-more-actions .button { width: 100%; }
  .journey-footer { padding: 16px 18px; }
}
@media (pointer: coarse) { .button, .journey-sidebar > .button { min-height: 44px; } input, select { font-size: 16px !important; } }