:root {
  --navy-950: #081525;
  --navy-900: #0c1d31;
  --navy-800: #15314b;
  --slate-700: #31475d;
  --slate-600: #52677a;
  --slate-500: #718497;
  --slate-300: #c7d3dd;
  --slate-200: #dde6ec;
  --slate-100: #edf3f6;
  --white: #ffffff;
  --teal-700: #08766e;
  --teal-600: #0b8f84;
  --teal-100: #dff6f2;
  --violet-700: #6350a8;
  --violet-100: #eeeafd;
  --amber-700: #9a5b08;
  --amber-100: #fff1d3;
  --rust-700: #9a4427;
  --rust-100: #fbe7df;
  --shadow: 0 18px 40px rgba(8, 21, 37, 0.11);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --focus: 0 0 0 4px rgba(11, 143, 132, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--navy-950);
  background:
    radial-gradient(circle at 12% 0%, rgba(11, 143, 132, 0.09), transparent 32rem),
    linear-gradient(180deg, #f8fbfc 0%, #eef4f7 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 9999;
  padding: 0.75rem 1rem;
  color: var(--white);
  background: var(--navy-950);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  color: var(--white);
  background:
    radial-gradient(circle at 86% 22%, rgba(255, 255, 255, 0.13), transparent 18rem),
    linear-gradient(135deg, var(--navy-950), #143c55 64%, #0b6a66);
  border-bottom: 4px solid rgba(255, 255, 255, 0.12);
}

.header-inner {
  width: min(1480px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.25rem 0 2rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 2rem;
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.35rem;
  color: #87e0d7;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-header h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.65rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.subtitle {
  margin: 0.75rem 0 0;
  color: #d3e9ee;
  font-size: clamp(1rem, 1.7vw, 1.25rem);
}




.app-shell {
  width: min(1480px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.overview {
  margin-bottom: 1rem;
}

.overview > div {
  padding: 1.35rem 1.5rem;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
}

.overview h2,
.panel-heading h2 {
  margin: 0;
  color: var(--navy-900);
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  letter-spacing: -0.025em;
}

.overview p {
  margin: 0.55rem 0 0;
  color: var(--slate-700);
}

.data-source {
  padding-top: 0.9rem;
  border-top: 1px solid var(--slate-200);
  font-size: 0.92rem;
}

.data-source a,
.footer-source a {
  color: var(--teal-700);
  font-weight: 750;
}

.data-source code {
  padding: 0.08rem 0.35rem;
  background: var(--slate-100);
  border: 1px solid var(--slate-200);
  border-radius: 6px;
}




.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.summary-card,
.info-card {
  min-width: 0;
  padding: 1rem 1.1rem;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

.summary-card span,
.info-card span {
  display: block;
  color: var(--slate-600);
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.02em;
}

.summary-card strong,
.info-card strong {
  display: block;
  margin-top: 0.15rem;
  color: var(--navy-900);
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.1;
}

.summary-card small {
  color: var(--slate-500);
}

.tab-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  margin-bottom: 1rem;
  padding: 0.5rem;
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  background: rgba(248, 251, 252, 0.94);
  border: 1px solid var(--slate-200);
  border-radius: 16px;
  backdrop-filter: blur(12px);
}

.tab-button {
  flex: 0 0 auto;
  padding: 0.72rem 1rem;
  color: var(--slate-700);
  background: transparent;
  border: 0;
  border-radius: 10px;
  font-weight: 750;
}

.tab-button:hover {
  background: var(--slate-100);
}

.tab-button.is-active {
  color: var(--white);
  background: var(--navy-900);
}

.tab-panel {
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.tab-panel[hidden] {
  display: none;
}

.panel-heading {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--slate-200);
}

.panel-heading .section-kicker,
.off-earth-card .section-kicker {
  color: var(--teal-700);
}

.panel-note {
  max-width: 620px;
  margin: 0;
  color: var(--slate-600);
  font-size: 0.92rem;
}

.map-layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.control-panel {
  display: grid;
  gap: 0.8rem;
}

.control-section {
  padding: 0.95rem;
  background: #f8fbfc;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

.control-section h3,
.analysis-card h3,
.step-card h3,
.off-earth-card h3 {
  margin: 0;
  color: var(--navy-900);
  font-size: 1rem;
}

.control-section > label:not(.checkbox-row),
.table-controls label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--navy-800);
  font-size: 0.82rem;
  font-weight: 800;
}

select,
input[type="search"],
textarea {
  width: 100%;
  color: var(--navy-950);
  background: var(--white);
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
}

select,
input[type="search"] {
  min-height: 42px;
  padding: 0.65rem 0.75rem;
}

textarea {
  min-height: 112px;
  padding: 0.8rem;
  resize: vertical;
}

.cer-box {
  min-height: 220px;
}

.segmented-control,
.view-toggle {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.35rem;
}

.status-button,
.view-button {
  min-height: 40px;
  padding: 0.45rem;
  color: var(--slate-700);
  background: var(--white);
  border: 1px solid var(--slate-300);
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 750;
}

.status-button:hover,
.view-button:hover {
  border-color: var(--teal-600);
}

.status-button.is-active,
.view-button.is-active {
  color: var(--white);
  background: var(--teal-700);
  border-color: var(--teal-700);
}

.view-toggle {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.6rem;
}

.helper-text,
.micro-note {
  margin: 0.55rem 0 0;
  color: var(--slate-600);
  font-size: 0.78rem;
}

.checkbox-row {
  margin-top: 0.6rem;
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  color: var(--slate-700);
  font-size: 0.82rem;
}

.checkbox-row input {
  width: 1rem;
  height: 1rem;
  margin-top: 0.15rem;
  accent-color: var(--teal-700);
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.4rem;
}

.primary-button,
.secondary-button {
  min-height: 42px;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-weight: 800;
}

.primary-button {
  color: var(--white);
  background: var(--navy-900);
  border: 1px solid var(--navy-900);
}

.primary-button:hover {
  background: var(--navy-800);
}

.secondary-button {
  color: var(--navy-900);
  background: var(--white);
  border: 1px solid var(--slate-300);
}

.secondary-button:hover:not(:disabled) {
  border-color: var(--teal-600);
  background: var(--teal-100);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.full-width {
  width: 100%;
}

.search-results {
  margin-top: 0.5rem;
  display: grid;
  gap: 0.3rem;
}

.search-result-button {
  width: 100%;
  padding: 0.55rem 0.65rem;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  text-align: left;
  color: var(--navy-900);
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 8px;
}

.search-result-button small {
  color: var(--slate-500);
}

.map-column {
  min-width: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

.map-toolbar {
  min-height: 68px;
  padding: 0.7rem 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--slate-200);
}

.map-toolbar > div:first-child {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem;
}

.map-toolbar span,
.map-toolbar small {
  color: var(--slate-600);
  font-size: 0.8rem;
}

.map-toolbar strong {
  color: var(--navy-900);
  font-size: 1.25rem;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.7rem;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
}

.legend-dot,
.legend-ring {
  width: 11px;
  height: 11px;
  display: inline-block;
  border-radius: 999px;
}

.fell-dot {
  background: var(--violet-700);
}

.found-dot {
  background: var(--teal-600);
}

.legend-ring {
  background: var(--amber-100);
  border: 2px solid var(--amber-700);
}

#map {
  width: 100%;
  height: min(68vh, 720px);
  min-height: 530px;
  background: #dbe7eb;
}

.map-caption {
  padding: 0.7rem 0.9rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--slate-600);
  background: #f8fbfc;
  border-top: 1px solid var(--slate-200);
  font-size: 0.76rem;
}

.map-caption p {
  margin: 0;
}

.map-credit {
  text-align: right;
}

.maplibregl-popup-content {
  min-width: 245px;
  padding: 0;
  overflow: hidden;
  border-radius: 14px;
  box-shadow: 0 15px 35px rgba(8, 21, 37, 0.25);
}

.popup-title {
  padding: 0.8rem 0.9rem;
  color: var(--white);
  background: var(--navy-900);
}

.popup-title strong {
  display: block;
  font-size: 1rem;
}

.popup-title span {
  color: #bfe8e4;
  font-size: 0.75rem;
}

.popup-grid {
  padding: 0.8rem 0.9rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 0.7rem;
  font-size: 0.8rem;
}

.popup-grid dt {
  color: var(--slate-500);
  font-weight: 750;
}

.popup-grid dd {
  margin: 0;
  color: var(--navy-900);
}

.unknown-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.emphasis-card {
  color: var(--white);
  background: var(--navy-900);
  border-color: var(--navy-900);
}

.emphasis-card span,
.emphasis-card strong {
  color: var(--white);
}

.table-controls {
  display: grid;
  grid-template-columns: minmax(160px, 0.55fr) minmax(240px, 1fr) minmax(160px, 0.45fr) minmax(200px, 0.7fr);
  gap: 0.55rem 0.75rem;
  align-items: center;
  margin-bottom: 0.8rem;
  padding: 0.9rem;
  background: #f8fbfc;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

.table-controls label {
  margin: 0;
}

.table-status {
  margin-bottom: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--slate-600);
  font-size: 0.86rem;
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
}

th,
td {
  padding: 0.72rem 0.8rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--slate-200);
  font-size: 0.82rem;
}

th {
  color: var(--navy-900);
  background: #eef4f7;
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover {
  background: #f8fbfc;
}

.empty-cell {
  padding: 2rem;
  text-align: center;
  color: var(--slate-600);
}

.data-badge {
  display: inline-flex;
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
}

.fell-badge {
  color: var(--violet-700);
  background: var(--violet-100);
}

.found-badge {
  color: var(--teal-700);
  background: var(--teal-100);
}

.unknown-value {
  color: var(--slate-500);
  font-style: italic;
}

.off-earth-card {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
  color: var(--navy-900);
  background:
    radial-gradient(circle at 14% 20%, rgba(255, 255, 255, 0.75), transparent 11rem),
    linear-gradient(135deg, var(--rust-100), #fff7ed);
  border: 1px solid #ecc6b5;
  border-radius: var(--radius-lg);
}

.planet-visual {
  width: 150px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 36% 30%, #f5b48e 0 6%, transparent 7%),
    radial-gradient(circle at 67% 60%, #8d3d27 0 11%, transparent 12%),
    radial-gradient(circle at 30% 72%, #b75f3c 0 8%, transparent 9%),
    radial-gradient(circle at 38% 32%, #d57d50, #9a4427 68%, #6f2e1d);
  border: 5px solid rgba(255, 255, 255, 0.65);
  border-radius: 999px;
  box-shadow: inset -20px -18px 30px rgba(62, 21, 10, 0.28), 0 20px 30px rgba(111, 46, 29, 0.17);
}

.off-earth-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1rem;
}

.off-earth-details div {
  padding: 0.7rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(154, 68, 39, 0.18);
  border-radius: var(--radius-sm);
}

.off-earth-details span {
  display: block;
  color: var(--rust-700);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

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

.analysis-card {
  min-width: 0;
  padding: 1.1rem;
  background: #f8fbfc;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

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

.analysis-card > span,
.analysis-card-header span {
  color: var(--teal-700);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.analysis-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.analysis-card-header > strong {
  padding: 0.45rem 0.7rem;
  color: var(--violet-700);
  background: var(--violet-100);
  border-radius: 999px;
  font-size: 0.82rem;
  white-space: nowrap;
}

.bar-chart {
  margin-top: 1rem;
  display: grid;
  gap: 0.8rem;
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.35fr) minmax(160px, 1fr) auto;
  gap: 0.65rem;
  align-items: center;
}

.bar-label {
  color: var(--navy-800);
  font-size: 0.82rem;
  font-weight: 750;
}

.bar-track {
  height: 14px;
  overflow: hidden;
  background: var(--slate-200);
  border-radius: 999px;
}

.bar-fill {
  height: 100%;
  min-width: 2px;
  border-radius: inherit;
  background: var(--teal-600);
}

.bar-fill.fell-fill {
  background: var(--violet-700);
}

.bar-fill.unmapped-fill {
  background: var(--amber-700);
}

.bar-value {
  min-width: 80px;
  text-align: right;
  color: var(--slate-700);
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
}

.analysis-question {
  margin: 1rem 0 0;
  padding: 0.75rem 0.85rem;
  color: var(--navy-900);
  background: var(--teal-100);
  border-left: 4px solid var(--teal-700);
  border-radius: 8px;
  font-weight: 700;
}

.small-table-wrap {
  margin-top: 0.8rem;
}

.investigation-grid {
  display: grid;
  gap: 0.9rem;
}

.step-card {
  padding: 1rem;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 0.9rem;
  background: #f8fbfc;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

.step-number {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--teal-700);
  border-radius: 999px;
  font-weight: 900;
}

.step-card p {
  margin: 0.35rem 0 0.75rem;
  color: var(--slate-600);
}

.final-step {
  background: linear-gradient(180deg, #f6fbfa, #eef7f5);
  border-color: #b7ded8;
}

.teacher-note {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  color: var(--navy-900);
  background: var(--amber-100);
  border: 1px solid #efd49d;
  border-radius: var(--radius-md);
}

.teacher-note summary {
  cursor: pointer;
  font-weight: 850;
}

.teacher-note p {
  margin: 0.75rem 0 0;
}






footer {
  padding: 1.6rem 1rem 2.5rem;
  text-align: center;
  color: var(--slate-600);
  font-size: 0.82rem;
}

footer p {
  margin: 0.2rem 0;
}

.loading-message,
.error-message {
  padding: 0.7rem;
  color: var(--slate-600);
  background: var(--slate-100);
  border-radius: 8px;
  font-size: 0.82rem;
}

.error-message {
  color: #842d25;
  background: #fde9e6;
}

@media (max-width: 1080px) {
  .summary-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .control-panel > .full-width {
    grid-column: 1 / -1;
  }

  .table-controls {
    grid-template-columns: 1fr 2fr;
  }

  #map {
    min-height: 560px;
  }
}

@media (max-width: 760px) {
  .header-inner,
  .panel-heading,
  .analysis-card-header,
  .map-toolbar,
  .table-status,
  .map-caption {
    align-items: stretch;
    flex-direction: column;
  }

  .pattern-grid,
  .unknown-summary-grid,
  .off-earth-card {
    grid-template-columns: 1fr;
  }

  .control-panel,
  .summary-strip {
    grid-template-columns: 1fr;
  }

  .tab-panel {
    padding: 0.85rem;
  }

  .panel-heading {
    align-items: flex-start;
  }

  .legend {
    justify-content: flex-start;
  }

  .table-controls {
    grid-template-columns: 1fr;
  }

  .planet-visual {
    width: 120px;
  }

  .bar-row {
    grid-template-columns: 1fr auto;
  }

  .bar-track {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .off-earth-details {
    grid-template-columns: 1fr;
  }

  .map-credit {
    text-align: left;
  }

  #map {
    height: 66vh;
    min-height: 470px;
  }
}

@media (max-width: 460px) {
  .app-shell,
  .header-inner {
    width: min(100% - 1rem, 1480px);
  }

  .segmented-control {
    grid-template-columns: 1fr;
  }

  .search-row {
    grid-template-columns: 1fr;
  }

  .step-card {
    grid-template-columns: 1fr;
  }

  .pagination-controls {
    width: 100%;
    justify-content: space-between;
  }
}