@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@300;400;500;600&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;1,8..60,400&display=swap');

:root {
  color-scheme: dark;
  /* Landing-site palette — kept identical so /workspace feels like the
     same product as lytelab.ai. */
  --bg: #111214;
  --surface: #1a1b1e;
  --card: #1a1b1e;
  --soft: #22232780;
  --ink: #faf5eb;
  --cream: #faf5eb;
  --cream-75: rgba(250, 245, 235, 0.75);
  --cream-50: rgba(250, 245, 235, 0.5);
  --muted: rgba(250, 245, 235, 0.55);
  --quiet: rgba(250, 245, 235, 0.35);
  --line: #2c2d30;
  --border: #2c2d30;
  --line-dark: #3a3b3e;
  --primary: #d4b254;
  --accent: #d4b254;
  --accent-soft: rgba(212, 178, 84, 0.22);
  --green: #6aae7f;
  --amber: #d4b254;
  --red: #d4685a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.4);
  --mono: 'IBM Plex Mono', ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: 'Source Serif 4', Georgia, serif;
  /* Explicit table-editor overrides so its fallback chain resolves to
     our palette instead of browser defaults. */
  --tbled-accent: var(--accent);
  --tbled-bg: var(--card);
  --tbled-fg: var(--cream);
  --tbled-muted: var(--cream-50);
  --tbled-border: var(--border);
  --tbled-header-bg: var(--soft);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.45;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(17, 18, 20, 0.88);
  padding: 0 18px;
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
}

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

.progress {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.step,
.status-pill,
.quiet-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
  padding: 0 12px;
  font-size: 0.86rem;
  font-weight: 800;
}

.step.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--primary);
}

.status-pill {
  min-width: 96px;
  color: var(--green);
}

.status-pill[data-tone="busy"] {
  color: var(--amber);
}

.status-pill[data-tone="error"] {
  color: var(--red);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(700px, 1fr) 390px;
  gap: 14px;
  padding: 14px;
}

.document-area {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 14px;
  min-width: 0;
}

.dropzone,
.preview-card,
.source-card,
.next-card,
.simple-actions,
.tool-drawer,
.inline-search,
.sign-box,
.results-card,
.advanced {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.dropzone {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  min-height: 116px;
  padding: 18px;
  outline: 2px dashed transparent;
  outline-offset: -8px;
}

.upload-progress {
  display: grid;
  gap: 8px;
  margin-top: 12px;
  max-width: 420px;
}

.upload-progress-copy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--cream-75);
  font-size: 0.82rem;
}

.upload-progress-copy strong {
  color: var(--cream);
  font-size: 0.82rem;
  font-weight: 700;
}

.upload-progress-copy span {
  color: var(--accent);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.upload-progress-track {
  position: relative;
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(250, 245, 235, 0.1);
}

.upload-progress-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 75%, white), var(--accent));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 32%, transparent);
  transition: width 160ms ease-out;
}

.dropzone.dragging {
  outline-color: var(--primary);
  background: var(--accent-soft);
}

.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
}

.section-kicker {
  display: block;
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 5px;
  font-size: 1.65rem;
  line-height: 1.12;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 7px;
  font-size: 1.18rem;
  line-height: 1.22;
  letter-spacing: 0;
}

p {
  color: var(--muted);
}

.primary-action {
  min-height: 42px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  background: var(--primary);
  color: var(--bg);
  padding: 0 16px;
  font-weight: 850;
}

.primary-action:hover {
  background: var(--cream);
}

.primary-action:disabled {
  border-color: var(--line-dark);
  background: var(--line);
  cursor: default;
}

.wide {
  width: 100%;
}

.quiet-button {
  background: var(--soft);
}

.quiet-button[hidden],
.download-link[hidden] {
  display: none;
}

.quiet-button:disabled {
  opacity: 0.5;
  cursor: default;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 12px;
  min-height: 0;
}

.preview-card {
  display: grid;
  grid-template-rows: 64px minmax(430px, calc(100vh - 260px));
  min-height: 0;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.preview-card.reference-strip {
  grid-template-rows: 40px 18vh;
  min-height: 0;
  opacity: 0.85;
}

.preview-card.reference-strip:hover {
  opacity: 1;
}

.reference-toolbar {
  padding: 6px 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.reference-toolbar .section-kicker {
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.reference-toolbar strong {
  font-size: 0.78rem;
  color: var(--cream-50);
  font-weight: 600;
}

.preview-frame.reference-frame {
  padding: 8px;
  gap: 6px;
}

.preview-frame.reference-frame .page-preview,
.preview-frame.reference-frame .pdf-object,
.preview-frame.reference-frame iframe {
  max-height: calc(18vh - 20px);
  width: auto;
}

.reference-empty {
  min-height: 0 !important;
  font-size: 0.78rem;
}

.preview-toolbar,
.results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  background: var(--soft);
  padding: 12px 14px;
}

.result-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 7px;
}

.confidence-badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--green);
  padding: 0 10px;
  font-size: 0.78rem;
  font-weight: 850;
  white-space: nowrap;
}

.preview-frame {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
  overflow: auto;
  background: var(--bg);
  padding: 18px;
  box-sizing: border-box;
}

.preview-frame iframe,
.pdf-object,
.page-preview {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  min-height: 0;
  border: 0;
  background: var(--card);
  object-fit: contain;
}

.page-stack {
  display: grid;
  justify-items: center;
  gap: 18px;
  width: 100%;
}

.page-shell {
  display: grid;
  justify-items: center;
  gap: 7px;
  width: 100%;
  margin: 0;
}

.page-shell figcaption {
  color: var(--cream-50);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
}

.empty-preview {
  display: grid;
  min-height: 100%;
  width: 100%;
  place-content: center;
  gap: 6px;
  text-align: center;
  color: var(--cream-50);
}

.empty-preview span,
.empty-result {
  color: var(--quiet);
}

.result-frame {
  align-items: stretch;
  justify-content: flex-start;
  flex-direction: column;
}

.result-editor {
  width: 100%;
  height: 100%;
  min-height: 0;
  resize: none;
  border: 0;
  background: #fbfcfe;
  color: #12161d;
  padding: 18px;
  outline: none;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.5;
  white-space: pre;
  overflow: auto;
}

.csv-toolbar {
  position: sticky;
  left: 0;
  display: flex;
  justify-content: flex-end;
  width: 100%;
  padding: 10px 10px 0;
}

.csv-grid-wrap {
  width: 100%;
  height: 100%;
  overflow: auto;
  padding: 10px;
}

.csv-grid {
  min-width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-family: var(--mono);
  font-size: 0.76rem;
}

.csv-grid th,
.csv-grid td {
  min-width: 120px;
  border: 1px solid #dfe6ef;
  padding: 0;
  vertical-align: top;
}

.csv-grid th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f2f6fb;
}

.csv-grid input {
  width: 100%;
  min-height: 34px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #12161d;
  padding: 7px 9px;
  font-family: var(--mono);
  font-size: 0.76rem;
}

.csv-grid input:focus {
  position: relative;
  z-index: 2;
  background: var(--card);
  box-shadow: inset 0 0 0 2px rgba(36, 87, 245, 0.34);
}

.binary-result {
  display: grid;
  place-content: center;
  gap: 8px;
  width: 100%;
  min-height: 100%;
  text-align: center;
  color: var(--muted);
}

.binary-result strong {
  color: var(--ink);
}

.stamp-overlay {
  position: absolute;
  z-index: 3;
  display: grid;
  align-content: center;
  gap: 1px;
  border: 1px solid rgba(16, 19, 24, 0.9);
  border-radius: 6px;
  background: rgba(26, 27, 30, 0.92);
  color: var(--ink);
  padding: 8px 10px;
  box-shadow: 0 8px 22px rgba(16, 19, 24, 0.18);
  user-select: none;
  touch-action: none;
  cursor: move;
}

.stamp-overlay[hidden] {
  display: none;
}

.stamp-overlay span,
.stamp-overlay small {
  color: var(--muted);
  font-size: 0.64em;
  font-weight: 750;
}

.stamp-overlay strong {
  font-size: 0.92em;
}

.task-panel {
  display: grid;
  grid-template-rows: auto auto auto auto auto minmax(170px, 1fr) auto;
  gap: 12px;
  min-width: 0;
}

.next-card,
.source-card,
.simple-actions,
.inline-search,
.sign-box,
.results-card,
.advanced {
  padding: 14px;
}

.next-card {
  background: var(--card);
  border-color: var(--accent);
  color: var(--cream);
}

.next-card h2,
.next-card strong {
  color: var(--cream);
}

.next-card p {
  color: var(--cream-75);
}

.next-card .section-kicker {
  color: var(--accent);
}

.next-card p {
  margin-bottom: 16px;
}

.source-card {
  display: grid;
  gap: 9px;
  padding: 14px;
  background: var(--soft);
}

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

.tool-drawer {
  background: var(--surface);
}

.tool-drawer summary {
  color: var(--muted);
  font-weight: 850;
  cursor: pointer;
}

.tool-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.tool-group .section-kicker {
  grid-column: 1 / -1;
}

.tool-group button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  font-weight: 800;
}

.tool-group button:hover {
  border-color: var(--line-dark);
}

.simple-actions .section-kicker {
  grid-column: 1 / -1;
}

.simple-actions button {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  font-weight: 800;
}

.simple-actions button:hover,
.quiet-button:hover {
  border-color: var(--line-dark);
}

.inline-search,
.sign-box {
  display: grid;
  gap: 9px;
  background: var(--soft);
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

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

.segmented label {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--muted);
}

.segmented label:has(input:disabled) {
  opacity: 0.45;
  cursor: default;
}

.segmented label:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--primary);
}

.segmented input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.inline-search[hidden],
.sign-box[hidden] {
  display: none;
}

.inline-search label,
.sign-box label {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 850;
}

.inline-search div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

input[type="search"],
input[type="text"] {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  outline: none;
  padding: 0 11px;
}

input:focus {
  border-color: #9eb3ff;
  box-shadow: 0 0 0 3px rgba(36, 87, 245, 0.12);
}

.inline-search button {
  min-height: 40px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  padding: 0 14px;
  font-weight: 850;
}

.check-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.range-row {
  display: grid;
  gap: 6px;
}

.range-row input {
  width: 100%;
}

.results-card {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-height: 220px;
  padding: 0;
  overflow: hidden;
}

.results-head h2 {
  margin-bottom: 0;
}

.result-list {
  display: grid;
  align-content: start;
  gap: 10px;
  overflow: auto;
  padding: 12px;
}

.result-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  padding: 12px;
}

.result-card header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.result-card pre {
  max-height: 210px;
  overflow: auto;
  margin: 0;
  border: 1px solid #e1e7ef;
  border-radius: 6px;
  background: #f8fafc;
  color: #26313e;
  padding: 10px;
  font-family: var(--mono);
  font-size: 0.76rem;
  white-space: pre-wrap;
}

.download-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--primary);
  padding: 0 10px;
  font-size: 0.82rem;
  font-weight: 850;
  text-decoration: none;
}

.empty-result {
  border: 1px dashed var(--line-dark);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.advanced {
  background: var(--soft);
}

.advanced summary {
  color: var(--muted);
  font-weight: 850;
  cursor: pointer;
}

.graph {
  display: grid;
  gap: 8px;
  max-height: 310px;
  overflow: auto;
  padding-top: 12px;
}

.node-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  padding: 10px;
}

.node-title-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 5px;
}

.node-card p,
.link-list {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.tag {
  border: 1px solid #dbe2eb;
  border-radius: 6px;
  background: #f5f7fa;
  color: #5c6672;
  padding: 3px 6px;
  font-family: var(--mono);
  font-size: 0.68rem;
}

.link-list {
  margin-top: 8px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: 1fr;
    height: auto;
    padding: 12px;
  }

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

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

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

  .task-panel {
    grid-template-rows: none;
  }
}

@media (max-width: 620px) {
  .workspace {
    padding: 10px;
  }

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

  .preview-card {
    grid-template-rows: auto minmax(340px, 58vh);
  }

  .preview-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .result-tools {
    justify-content: flex-start;
  }

  .simple-actions {
    grid-template-columns: 1fr;
  }
}

/* Drag-and-drop target styling when user drags a PDF over the preview
   frame (fills the left pane when empty or showing a document). */
.preview-frame.drop-target {
  outline: 2px dashed var(--accent);
  outline-offset: -10px;
  background: color-mix(in srgb, var(--accent-soft) 40%, var(--bg));
  transition: background 0.15s ease, outline-color 0.15s ease;
}

.preview-frame.drop-target::before {
  content: "Drop PDF to replace";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 14px 24px;
  background: var(--card);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  pointer-events: none;
  z-index: 5;
}