:root {
  --theme-name: "twilight";
  --paper: #f7f2e8;
  --ink: #112b2e;
  --ink-soft: #4f686c;
  --line: rgba(17, 43, 46, 0.2);
  --accent: #cf5a2f;
  --accent-rgb: 207, 90, 47;
  --accent-soft: #f1d9c7;
  --panel: #f8f1e6;
  --surface: #fffdfa;
  --surface-soft: #faf4ea;
  --surface-muted: #f8f1e5;
  --table-head: #f6efe2;
  --bg-layer-a: #edd6be;
  --bg-layer-b: #d2e6e0;
  --bg-base-a: #f7f1e6;
  --bg-base-b: #ece2d1;
  --shadow: 0 12px 26px rgba(17, 43, 46, 0.1);
  --radius: 18px;
  --tooltip-bg: #1e242c;
  --tooltip-ink: #f2f5fb;
  --clr-secondary-a10: #5a9b81;
  --clr-surface-a100: #ffffff;
  --clr-surface-a40: rgba(17, 43, 46, 0.25);
  --clr-surface-a30: rgba(17, 43, 46, 0.18);
  --clr-surface-a20: rgba(17, 43, 46, 0.12);
}

html[data-theme="dark"] {
  --theme-name: "dark";
  --paper: #090a0b;
  --ink: #e9edf5;
  --ink-soft: #9ba9bc;
  --line: rgba(230, 236, 245, 0.22);
  --accent: #ff9b6d;
  --accent-rgb: 255, 155, 109;
  --accent-soft: rgba(255, 155, 109, 0.2);
  --panel: #141821;
  --surface: #16181c;
  --surface-soft: #1a1f28;
  --surface-muted: #1b212b;
  --table-head: #16181c;
  --bg-layer-a: #212736;
  --bg-layer-b: #111724;
  --bg-base-a: #06080d;
  --bg-base-b: #0d1118;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.42);
  --tooltip-bg: #f2f5fb;
  --tooltip-ink: #10141a;
  --clr-secondary-a10: #546f92;
  --clr-surface-a100: #f2f5fb;
  --clr-surface-a40: rgba(242, 245, 251, 0.24);
  --clr-surface-a30: rgba(242, 245, 251, 0.2);
  --clr-surface-a20: rgba(242, 245, 251, 0.14);
}

html[data-theme="light"] {
  --theme-name: "light";
  --paper: #ffffff;
  --ink: #1c2a3a;
  --ink-soft: #5c6b7f;
  --line: rgba(27, 52, 84, 0.2);
  --accent: #b44f28;
  --accent-rgb: 180, 79, 40;
  --accent-soft: #f8ddd2;
  --panel: #f9fbff;
  --surface: #ffffff;
  --surface-soft: #f6f9ff;
  --surface-muted: #f3f7fe;
  --table-head: #f4f6fb;
  --bg-layer-a: #e9f0ff;
  --bg-layer-b: #e6f5ee;
  --bg-base-a: #ffffff;
  --bg-base-b: #f2f8ff;
  --shadow: 0 12px 26px rgba(16, 28, 46, 0.08);
  --tooltip-bg: #1f2937;
  --tooltip-ink: #f8fafc;
  --clr-secondary-a10: #5f8fb9;
  --clr-surface-a100: #ffffff;
  --clr-surface-a40: rgba(27, 52, 84, 0.2);
  --clr-surface-a30: rgba(27, 52, 84, 0.16);
  --clr-surface-a20: rgba(27, 52, 84, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Instrument Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 4%, var(--bg-layer-a), transparent 52%),
    radial-gradient(circle at 88% 86%, var(--bg-layer-b), transparent 50%),
    linear-gradient(150deg, var(--bg-base-a), var(--bg-base-b) 72%);
}

a {
  color: inherit;
}

.app-shell {
  position: relative;
  max-width: 1380px;
  margin: 0 auto;
  padding: 40px 20px 48px;
}

h1,
h2,
h3 {
  margin: 0.75ex 0 0.75ex 0;
  font-family: "Fraunces", Georgia, serif;
  line-height: 1.1;
}

h1 {
  font-size: clamp(28px, 4.5vw, 46px);
  margin: 0 0 0 0;
}

h2 {
  font-size: clamp(24px, 3vw, 34px);
  margin: 0 0 0.5ex 0;
}

h3 {
  font-size: clamp(20px, 2.1vw, 27px);
}

h4 {
  margin: 0;
  font-size: 18px;
  font-family: "Fraunces", Georgia, serif;
}

p {
  line-height: 1.55;
}

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

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-copy p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.brand-logo {
  width: clamp(52px, 7vw, 82px);
  height: auto;
  display: block;
}

.topbar-actions {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  flex: 1;
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
  background: var(--surface-soft);
  box-shadow: var(--shadow);
}

.theme-btn {
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  width: 38px;
  height: 38px;
  padding: 0;
  display: inline-grid;
  place-content: center;
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease, background 150ms ease;
}

.theme-icon {
  width: 20px;
  height: 20px;
  display: block;
}

html[data-theme="dark"] .theme-icon {
  filter: brightness(0) invert(1) contrast(1.08);
}

.theme-btn:hover,
.theme-btn:focus-visible {
  color: var(--ink);
  border-color: var(--line);
  outline: none;
}

.theme-btn.is-active {
  color: var(--ink);
  border-color: rgba(var(--accent-rgb), 0.58);
  background: rgba(var(--accent-rgb), 0.16);
}

.page-tabs {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 14px;
}

.page-tab {
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
  font-weight: 600;
  padding: 8px 13px;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.page-tab:hover,
.page-tab:focus-visible {
  border-color: rgba(var(--accent-rgb), 0.6);
  color: var(--ink);
  outline: none;
}

.page-tab.is-active {
  color: var(--ink);
  border-color: rgba(var(--accent-rgb), 0.58);
  background: rgba(var(--accent-rgb), 0.16);
}

.layout-grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 16px;
}

.sidebar {
  padding: 18px;
  position: sticky;
  top: 20px;
  align-self: start;
  max-height: none;
  overflow: visible;
  z-index: 2;
}

.search-card {
  display: grid;
  gap: 18px;
}

.search-card-header h2 {
  font-size: 26px;
  margin-bottom: 8px;
}

.search-card-header p,
.section-note,
.search-note,
.meta-line,
.cell-meta,
.notice-block p {
  margin: 0;
  color: var(--ink-soft);
}

.search-form {
  display: grid;
  gap: 14px;
}

.form-section {
  display: grid;
  gap: 7px;
}

.form-section h3 {
  font-size: 18px;
}

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

.metric-input-grid {
  gap: 10px;
}

.field-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.search-form input,
.search-form select {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  font-size: 15px;
  padding: 12px 14px;
  width: 100%;
}

.search-form input:focus,
.search-form select:focus {
  outline: 2px solid rgba(var(--accent-rgb), 0.3);
  border-color: rgba(var(--accent-rgb), 0.6);
}

.input-with-unit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.input-with-unit span {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

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

.search-form button,
.secondary-button {
  appearance: none;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.2;
  border: 1px solid rgba(var(--accent-rgb), 0.8);
  border-radius: 12px;
  background: rgba(var(--accent-rgb), 0.16);
  color: var(--ink);
  font-weight: 600;
  padding: 10px 12px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

.search-form button:hover,
.search-form button:focus-visible,
.secondary-button:hover,
.secondary-button:focus-visible {
  transform: translateY(-1px);
  background: rgba(var(--accent-rgb), 0.22);
  outline: none;
}

.secondary-button {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-soft);
}

.content {
  padding: 22px;
}

.page-block > p {
  margin-top: 0;
  color: var(--ink-soft);
  line-height: 1.55;
}

.hero-block {
  display: grid;
  gap: 10px;
}

.hero-block.compact {
  margin-bottom: 14px;
}

.hero-metrics {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.metric-card,
.highlight-card,
.notice-block,
.result-summary {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
}

.metric-card {
  padding: 14px;
  display: grid;
  gap: 6px;
}

.metric-link {
  text-decoration: none;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

.metric-link:hover,
.metric-link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(var(--accent-rgb), 0.5);
  background: rgba(var(--accent-rgb), 0.08);
  outline: none;
}

.metric-value {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
}

.metric-label {
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
}

.section-block {
  margin-top: 18px;
}

.section-heading {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

.section-heading p {
  margin: 0;
  color: var(--ink-soft);
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.highlight-card {
  padding: 14px;
}

.highlight-link {
  text-decoration: none;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

.highlight-link:hover,
.highlight-link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(var(--accent-rgb), 0.5);
  background: rgba(var(--accent-rgb), 0.08);
  outline: none;
}

.highlight-card h3 {
  margin-bottom: 6px;
  font-size: 19px;
}

.highlight-card p {
  margin: 0;
}

.notice-block,
.result-summary {
  padding: 14px;
}

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

.filter-pill,
.badge {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 7px 11px;
  font-size: 13px;
}

.filter-pill strong {
  margin-right: 4px;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 14px;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
}

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

.results-table th {
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 11px;
  color: var(--ink-soft);
  background: var(--table-head);
  white-space: nowrap;
}

.cell-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.cell-meta {
  font-size: 13px;
}

.result-row {
  cursor: pointer;
}

.result-row:hover {
  background: rgba(var(--accent-rgb), 0.08);
}

.result-row:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb), 0.5);
  outline-offset: -2px;
}

.material-header {
  display: grid;
  gap: 10px;
}

.material-detail {
  display: grid;
  gap: 22px;
}

.path-chip {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  line-height: 1.4;
  word-break: break-all;
}

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

.details-grid,
.metrics-grid {
  display: grid;
  gap: 10px;
}

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

.details-grid > div,
.metric-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: var(--surface);
}

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

.details-grid dt,
.metric-panel dt {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin-bottom: 4px;
}

.details-grid dd,
.metric-panel dd {
  margin: 0;
  font-size: 16px;
}

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

.detail-figure-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.figure-path-label {
  display: inline-block;
  margin: 0 8px 0 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

.figure-card {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: var(--surface);
  display: grid;
  gap: 12px;
}

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

.figure-caption {
  display: grid;
  gap: 6px;
}

.figure-caption p {
  margin: 0;
  color: var(--ink-soft);
}

.figure-visual,
.figure-placeholder {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.figure-visual {
  overflow: hidden;
  padding: 10px;
}

.figure-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.figure-placeholder {
  min-height: 240px;
  display: grid;
  place-items: center;
  padding: 24px;
  text-align: center;
  color: var(--ink-soft);
  border-style: dashed;
}

.figure-card.is-missing {
  opacity: 0.9;
}

.linked-entry-list {
  display: grid;
  gap: 12px;
}

.linked-entry-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: var(--surface-soft);
  display: grid;
  gap: 12px;
}

.linked-entry-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.compact-button {
  padding: 8px 10px;
  font-size: 13px;
}

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

.linked-entry-fact {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: var(--surface);
  display: grid;
  gap: 4px;
}

.fact-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.fact-note {
  color: var(--ink-soft);
  font-size: 13px;
}

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

.inline-link-list,
.comma-link-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.message-list {
  margin: 0;
  padding-left: 18px;
}

.inline-link-list li + li,
.message-list li + li {
  margin-top: 6px;
}

.inline-link-list a {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.comma-link-list {
  display: flex;
  flex-wrap: wrap;
}

.comma-link-list li:not(:last-child)::after {
  content: ", ";
}

.comma-link-list a {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.symmetry-table-wrap {
  margin-bottom: 2px;
}

.symmetry-table td {
  line-height: 1.45;
}

.symmetry-table th,
.symmetry-table td {
  background: var(--surface);
}

.katex {
  font-size: 1em;
}

.inline-icon {
  width: 14px;
  height: 14px;
  display: inline-block;
}

html[data-theme="dark"] .inline-icon {
  filter: brightness(0) invert(1) contrast(1.08);
}

.empty {
  color: var(--ink-soft);
}

.info-dot {
  display: inline-grid;
  place-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--accent);
  font-size: 12px;
  position: relative;
  cursor: help;
  flex: 0 0 auto;
}

.info-bubble {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  min-width: 210px;
  max-width: 330px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--tooltip-bg);
  color: var(--tooltip-ink);
  font-size: 12px;
  line-height: 1.45;
  display: grid;
  gap: 8px;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 160ms ease, visibility 160ms ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  text-transform: none;
  letter-spacing: normal;
  font-weight: 400;
  z-index: 10;
}

.info-bubble-paragraph {
  display: block;
}

.info-dot:hover .info-bubble,
.info-dot:focus-visible .info-bubble {
  opacity: 1;
  visibility: visible;
}

/* Buttons used to open and close accordion panels */
.accordion {
  background-color: var(--clr-secondary-a10);
  color: var(--clr-surface-a100);
  border: 2px solid var(--clr-secondary-a10);
  border-radius: 3px;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  text-align: left;
  outline: none;
  transition: 0.4s;
  margin-top: 2px;
}

.dark .accordion,
html[data-theme="dark"] .accordion {
  border: none;
  background-color: var(--clr-surface-a30);
  box-shadow: 2px 2px 0 var(--clr-surface-a20);
}

.active,
.accordion:enabled:hover {
  background-color: var(--clr-surface-a40);
}

.accordionPanel {
  padding: 20px 2.5%;
  border: 2px solid var(--clr-secondary-a10);
  border-radius: 3px;
  margin-bottom: 10px;
  overflow: auto;
}

.dark .accordionPanel,
html[data-theme="dark"] .accordionPanel {
  border: 2px solid var(--clr-surface-a20);
}

.app-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-top: 16px;
  padding: 14px 16px;
}

.app-footer p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.app-footer a {
  color: inherit;
}

.cc-badge-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.cc-badge {
  width: 88px;
  height: 31px;
  display: block;
}

@media (max-width: 1140px) {
  .layout-grid {
    grid-template-columns: 320px minmax(0, 1fr);
  }

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

@media (max-width: 980px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-actions {
    justify-content: flex-start;
  }

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

  .sidebar {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .highlight-grid,
  .details-grid,
  .figure-grid,
  .hero-metrics,
  .form-grid,
  .metrics-grid,
  .linked-entry-grid,
  .linked-entry-facts {
    grid-template-columns: 1fr;
  }

  .app-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 24px 14px 36px;
  }

  .brand-row {
    align-items: flex-start;
  }

  .brand-copy p {
    font-size: 14px;
  }

  .content,
  .sidebar {
    padding: 16px;
  }

  .button-row {
    flex-direction: column;
  }

  .linked-entry-header {
    flex-direction: column;
  }

  .search-form button,
  .secondary-button {
    width: 100%;
  }
}