:root {
  --bg: #0f1418;
  --panel: #172027;
  --panel-2: #1e2a33;
  --panel-3: #24313b;
  --ink: #f5f7f8;
  --muted: #a9b7c0;
  --line: #34434f;
  --line-strong: #536675;
  --brand: #f05a38;
  --gold: #f2b849;
  --water: #36aeca;
  --green: #5cc48b;
  --danger: #e25b62;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(54, 174, 202, 0.08), transparent 42%),
    linear-gradient(110deg, rgba(240, 90, 56, 0.14), transparent 30%),
    #0f1418;
  color: var(--ink);
  font-family: "Segoe UI", Arial, sans-serif;
}

html.embedded body {
  background: transparent;
  min-height: 0;
}

html.embedded .topbar {
  background: transparent;
  border: 0;
  justify-content: flex-end;
  margin: 0 0 10px;
  padding: 0;
}

html.embedded .brand {
  display: none;
}

html.embedded .analysis-shell {
  max-width: none;
  padding: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #21303a;
  color: var(--ink);
  cursor: pointer;
  min-height: 38px;
  padding: 8px 12px;
}

button:hover {
  border-color: var(--water);
}

.topbar {
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(14px, 3vw, 34px);
}

.brand {
  align-items: center;
  display: flex;
  gap: 14px;
}

.brand img {
  height: 44px;
  width: 44px;
}

.brand p,
.section-heading span,
.summary-band p {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0;
  margin: 0;
  text-transform: uppercase;
}

.brand h1 {
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  line-height: 1.1;
  margin: 3px 0 0;
}

.input-actions {
  display: flex;
  gap: 8px;
}

.input-actions button {
  min-height: 34px;
  padding: 6px 12px;
}

.analysis-shell {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(340px, 0.7fr) minmax(620px, 1.3fr);
  margin: 0 auto;
  max-width: 1680px;
  padding: 18px clamp(14px, 3vw, 34px) 42px;
}

.input-pane,
.output-pane,
.results-section {
  background: rgba(23, 32, 39, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  box-shadow: var(--shadow);
  min-width: 0;
}

.input-pane {
  align-self: start;
  padding: 18px;
}

.output-pane {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 14px;
}

.section-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.input-pane > .section-heading {
  align-items: center;
  min-height: 38px;
}

.section-heading.compact {
  border-top: 1px solid var(--line);
  margin-top: 18px;
  padding-top: 16px;
}

.section-heading p {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
}

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

label {
  color: var(--muted);
  display: grid;
  font-size: 0.82rem;
  gap: 6px;
}

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

input,
select {
  background: #11191f;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  min-height: 40px;
  padding: 8px 10px;
  width: 100%;
}

input:focus,
select:focus {
  border-color: var(--water);
  outline: none;
}

.switch-row {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 14px;
}

.switch-row label {
  align-items: center;
  background: #121b22;
  border: 1px solid var(--line);
  border-radius: 6px;
  display: flex;
  min-height: 42px;
  padding: 8px 10px;
}

.switch-row input {
  min-height: auto;
  width: auto;
}

.input-trace {
  border-top: 1px solid var(--line);
  margin-top: 18px;
  padding-top: 16px;
}

.input-trace .section-heading {
  align-items: flex-start;
}

.input-trace .section-heading span {
  text-align: right;
}

.input-trace pre {
  max-height: 520px;
  min-height: 260px;
}

.summary-band {
  background: linear-gradient(90deg, rgba(240, 90, 56, 0.18), rgba(54, 174, 202, 0.14));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  display: grid;
  gap: 12px;
  grid-template-columns: 1.2fr 1fr 1fr;
  padding: 14px;
}

.summary-band strong {
  display: block;
  font-size: clamp(1.4rem, 3vw, 2.5rem);
  line-height: 1.1;
  margin-top: 4px;
}

.results-section {
  box-shadow: none;
  padding: 14px;
}

.criteria-toolbar {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -2px 0 12px;
}

.criteria-toolbar.secondary {
  margin-top: -4px;
}

.toolbar-label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.filter-chip {
  align-items: center;
  background: #121b22;
  border-color: var(--line);
  color: #cdd9df;
  display: inline-flex;
  gap: 7px;
  min-height: 32px;
  padding: 6px 10px;
}

.filter-chip:hover {
  border-color: var(--water);
}

.filter-chip.active {
  background: rgba(54, 174, 202, 0.16);
  border-color: rgba(54, 174, 202, 0.72);
  color: var(--ink);
}

.filter-chip span {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1;
  min-width: 1.5em;
  padding: 4px 6px;
  text-align: center;
}

.table-wrap {
  overflow-x: auto;
  scrollbar-color: var(--line-strong) transparent;
}

.criteria-pager {
  align-items: center;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 10px;
  padding-top: 10px;
}

.criteria-pager[hidden] {
  display: none;
}

.criteria-pager button {
  min-height: 32px;
  padding: 6px 10px;
}

.criteria-pager button:disabled {
  cursor: default;
  opacity: 0.45;
}

.criteria-pager span {
  color: var(--muted);
  font-size: 0.8rem;
}

table {
  border-collapse: collapse;
  min-width: 860px;
  table-layout: fixed;
  width: 100%;
}

.col-option {
  width: 190px;
}

.col-basis {
  width: auto;
}

.col-demand {
  width: 88px;
}

.col-small {
  width: 76px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  line-height: 1.38;
  padding: 12px 10px;
  text-align: left;
  vertical-align: top;
  word-break: normal;
}

th {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

td {
  font-size: 0.9rem;
}

.option-cell strong {
  display: block;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.tag-row {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

tr.best-row {
  background: rgba(92, 196, 139, 0.12);
  outline: 1px solid rgba(92, 196, 139, 0.28);
}

tbody tr[data-candidate-id] {
  cursor: pointer;
}

tbody tr[data-candidate-id]:hover,
tbody tr[data-candidate-id]:focus {
  background: rgba(54, 174, 202, 0.08);
  outline: 1px solid rgba(54, 174, 202, 0.24);
  outline-offset: -1px;
}

tr.selected-row {
  box-shadow: inset 4px 0 0 var(--gold);
}

.pill {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  display: inline-block;
  font-size: 0.75rem;
  line-height: 1.25;
  padding: 2px 8px;
  white-space: nowrap;
}

.pill.best {
  border-color: rgba(92, 196, 139, 0.7);
  color: var(--green);
}

.pill.system {
  border-color: rgba(54, 174, 202, 0.55);
  color: #bfeefd;
}

.basis-cell > strong {
  display: block;
  margin-bottom: 8px;
}

.criteria-notes {
  color: #c7d5dc;
  display: grid;
  font-size: 0.78rem;
  gap: 3px;
  line-height: 1.35;
}

.criteria-notes span::before {
  color: var(--water);
  content: "";
}

.number-cell {
  white-space: nowrap;
}

.source-note {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #b8c8d1;
  display: grid;
  font-size: 0.82rem;
  gap: 4px;
  line-height: 1.35;
  margin-top: 9px;
  padding-top: 8px;
}

.source-note strong {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.source-note span {
  overflow-wrap: anywhere;
}

.source-preview-section {
  overflow: visible;
}

.source-preview {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.preview-summary {
  align-items: start;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  min-width: 0;
}

.preview-summary strong,
.empty-preview strong {
  display: block;
  font-size: 0.96rem;
}

.preview-summary span,
.empty-preview span,
.preview-note {
  color: var(--muted);
  display: block;
  font-size: 0.82rem;
  line-height: 1.35;
  margin-top: 4px;
}

.preview-selected-values {
  background: #101820;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
}

.preview-selected-values span:first-child {
  color: var(--ink);
  font-weight: 700;
  margin-top: 0;
}

.curve-card {
  background: #101820;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  padding: 10px;
}

.curve-card svg {
  display: block;
  height: auto;
  max-height: 390px;
  width: 100%;
}

.curve-card text {
  fill: #c9d8df;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 13px;
}

.curve-card .selected-label {
  fill: var(--gold);
  font-size: 15px;
  font-weight: 700;
}

.preview-table-wrap {
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow-x: auto;
}

.nfpa-preview-card {
  background: #f7f7f2;
  border: 1px solid #1d1d1b;
  border-radius: 4px;
  color: #121514;
  max-width: 100%;
  min-width: 0;
  padding: 10px;
}

.nfpa-table-caption {
  border-bottom: 2px solid #222;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  font-style: italic;
  font-weight: 700;
  margin-bottom: 0;
  padding: 0 0 6px;
}

.nfpa-table-wrap {
  border: 0;
  border-radius: 0;
  max-width: 100%;
  scrollbar-color: #77736d #eeeadd;
  width: 100%;
}

.nfpa-preview-table {
  border-collapse: collapse;
  color: #111;
  font-family: Georgia, "Times New Roman", serif;
  min-width: var(--nfpa-min-width, 820px);
  table-layout: auto;
  width: 100%;
}

.nfpa-preview-table th,
.nfpa-preview-table td {
  border-bottom: 1px solid #4d4d48;
  border-right: 1px solid #77736d;
  color: #111;
  font-size: 0.82rem;
  line-height: 1.25;
  min-width: 62px;
  overflow: visible;
  overflow-wrap: anywhere;
  padding: 7px 8px;
  text-align: center;
  vertical-align: middle;
  white-space: normal;
  word-break: normal;
}

.nfpa-preview-table th {
  background: #f7f7f2;
  border-bottom: 2px solid #222;
  font-weight: 700;
  text-transform: none;
}

.nfpa-preview-table td:first-child,
.nfpa-preview-table td:nth-child(2) {
  min-width: 120px;
  text-align: left;
}

.nfpa-preview-table .preview-selected {
  background: #fff2a8;
  outline: 2px solid #c99922;
  outline-offset: -2px;
}

.nfpa-preview-table td:last-child,
.nfpa-preview-table th:last-child {
  border-right: 0;
}

.nfpa-table-notes {
  border-top: 1px solid #4d4d48;
  color: #111;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
  line-height: 1.3;
  margin-top: 8px;
  padding-top: 6px;
}

.nfpa-table-notes div {
  margin-top: 3px;
  overflow-wrap: anywhere;
}

.preview-note {
  margin: 0;
}

.empty-preview {
  background: #101820;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
}

pre {
  background: #101820;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #dce7ec;
  margin: 0;
  min-height: 180px;
  overflow: auto;
  padding: 12px;
  white-space: pre-wrap;
}

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

.source-item {
  background: #121b22;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
}

.source-item strong {
  display: block;
  margin-bottom: 3px;
}

.source-item span {
  color: var(--muted);
  font-size: 0.86rem;
}

.source-item summary {
  cursor: pointer;
}

.source-item summary strong,
.source-item summary span {
  display: block;
}

.reference-grid {
  display: grid;
  gap: 6px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  margin-top: 10px;
  max-height: 320px;
  overflow: auto;
}

.reference-grid span {
  background: #101820;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  font-size: 0.78rem;
  padding: 6px 8px;
}

html[data-theme="plain-light"] {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel-2: #f7fafc;
  --panel-3: #eef4f8;
  --ink: #16202a;
  --muted: #4f6070;
  --line: #cbd6df;
  --line-strong: #91a5b6;
  --brand: #be3d2a;
  --gold: #7f4a00;
  --water: #0f6c8e;
  --green: #176d49;
  --danger: #b9343f;
  --shadow: 0 10px 24px rgba(36, 52, 68, 0.12);
  color-scheme: light;
}

html[data-theme="plain-light"] body {
  background:
    linear-gradient(#dbe5ed 1px, transparent 1px),
    linear-gradient(90deg, #dbe5ed 1px, transparent 1px),
    linear-gradient(180deg, #f8fbfd 0%, #eef4f8 100%);
  background-size: 34px 34px, 34px 34px, auto;
}

html[data-theme="plain-light"].embedded body {
  background: transparent;
}

html[data-theme="plain-light"] button {
  background: #ffffff;
  border-color: #9fb1c0;
  color: #16202a;
}

html[data-theme="plain-light"] button:hover {
  border-color: #0f6c8e;
}

html[data-theme="plain-light"] .input-pane,
html[data-theme="plain-light"] .output-pane,
html[data-theme="plain-light"] .results-section,
html[data-theme="plain-light"] .preview-selected-values,
html[data-theme="plain-light"] .curve-card,
html[data-theme="plain-light"] .empty-preview,
html[data-theme="plain-light"] pre,
html[data-theme="plain-light"] .source-item,
html[data-theme="plain-light"] .reference-grid span {
  background: #ffffff;
  border-color: #b9c8d4;
  color: #16202a;
}

html[data-theme="plain-light"] input,
html[data-theme="plain-light"] select {
  background: #ffffff;
  border-color: #9fb1c0;
  color: #16202a;
}

html[data-theme="plain-light"] .switch-row label,
html[data-theme="plain-light"] .filter-chip,
html[data-theme="plain-light"] .preview-selected-values,
html[data-theme="plain-light"] .curve-card,
html[data-theme="plain-light"] .source-item,
html[data-theme="plain-light"] .reference-grid span {
  background: #f7fafc;
  border-color: #c2d0dc;
}

html[data-theme="plain-light"] .summary-band {
  background: #f7fafc;
  border-color: #b9c8d4;
}

html[data-theme="plain-light"] .filter-chip.active {
  background: #e7f3f8;
  border-color: #0f6c8e;
  color: #16202a;
}

html[data-theme="plain-light"] .filter-chip span {
  background: #e6edf3;
}

html[data-theme="plain-light"] tr.best-row {
  background: #eaf6ef;
  outline-color: #9bcfb3;
}

html[data-theme="plain-light"] tbody tr[data-candidate-id]:hover,
html[data-theme="plain-light"] tbody tr[data-candidate-id]:focus {
  background: #e7f3f8;
  outline-color: #9db7c9;
}

html[data-theme="plain-light"] .criteria-notes,
html[data-theme="plain-light"] .source-note,
html[data-theme="plain-light"] .source-item span,
html[data-theme="plain-light"] .preview-summary span,
html[data-theme="plain-light"] .empty-preview span,
html[data-theme="plain-light"] .preview-note {
  color: #405366;
}

html[data-theme="plain-light"] .source-note {
  border-top-color: #c2d0dc;
}

html[data-theme="plain-light"] .curve-card text {
  fill: #405366;
}

@media (max-width: 980px) {
  .analysis-shell {
    grid-template-columns: 1fr;
  }

  .summary-band,
  .field-grid,
  .switch-row {
    grid-template-columns: 1fr;
  }

  .preview-summary {
    grid-template-columns: 1fr;
  }
}