:root {
  --page: #f5f7f9;
  --panel: #ffffff;
  --result: #fff0d8;
  --text: #141414;
  --muted: #5a6370;
  --accent: #f26a00;
  --accent-dark: #d95000;
  --border: #e4e7eb;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.exoatom-body {
  margin: 0;
  min-height: 100vh;
  background: var(--page);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.42;
}

.exoatom-page {
  max-width: 1120px;
  margin: 52px auto 64px;
  padding: 0 18px;
}

.page-header {
  margin: 0 auto 48px;
  max-width: 660px;
}

.page-header h1 {
  margin: 0 0 46px;
  text-align: center;
  font-size: 31px;
  font-weight: 500;
}

.page-header p {
  margin: 0 0 6px;
  font-size: 22px;
}

.page-header code {
  font-size: 0.92em;
}

.intro-copy {
  margin: 0 auto 28px;
  max-width: 720px;
}

.search-panel {
  background: var(--panel);
  border-radius: 3px;
  box-shadow: var(--shadow);
  margin: 0 auto 20px;
  max-width: 1088px;
  padding: 28px 38px 40px;
}

.search-panel h2 {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.search-form {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px 76px;
  align-items: start;
}

.field,
.checkbox-field {
  display: grid;
  gap: 8px;
  color: #263242;
  font-weight: 700;
}

.field input {
  width: 100%;
  height: 46px;
  border: 1px solid #8a95a3;
  border-radius: 4px;
  padding: 8px 14px;
  font: inherit;
  font-size: 20px;
}

.checkbox-field input {
  width: 29px;
  height: 29px;
  margin: 0;
  accent-color: var(--accent);
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 6px;
}

button,
.actions button {
  border: 1px solid var(--accent);
  border-radius: 5px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 20px;
  font-weight: 700;
  padding: 10px 18px;
}

button:hover,
.actions button:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

button.secondary,
.actions button.secondary {
  background: #fff;
  color: var(--accent);
}

button.secondary:hover,
.actions button.secondary:hover {
  background: #fff7f0;
  color: var(--accent-dark);
}

.results h2,
.periodic-section h2,
.species-section h2 {
  margin: 18px 0;
  font-size: 22px;
  font-weight: 500;
}

.periodic-section {
  overflow-x: auto;
}

.periodic_table a {
  color: inherit;
  text-decoration: none;
}

.periodic_table__element {
  min-width: 44px;
  min-height: 62px;
  border: 1px solid #f6c79b !important;
  border-radius: 4px;
  background: #fff;
  color: var(--accent);
}

.periodic_table__element_link:hover .periodic_table__element {
  background: #fff7f0;
}

.periodic_table__element--disabled {
  border-color: var(--border) !important;
  color: #a2a8b0;
  cursor: default;
  opacity: 0.5;
}

.periodic_table__element--disabled .periodic_table__element_symbol,
.periodic_table__element--disabled .periodic_table__element_atomic_number {
  color: #a2a8b0 !important;
}

.periodic_table__element_atomic_number {
  color: var(--muted) !important;
  font-size: 9px;
}

.periodic_table__element_symbol {
  color: var(--accent);
  font-size: 18px !important;
  font-weight: 700;
}

.species-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, 156px);
  gap: 20px;
}

.species-card {
  display: grid;
  align-content: center;
  justify-items: center;
  width: 156px;
  height: 156px;
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.10);
  color: var(--accent);
  padding: 18px;
  text-align: center;
  text-decoration: none;
}

.species-card span,
.species-card small {
  font-size: 22px;
  font-weight: 400;
}

.species-card sup {
  font-size: 0.62em;
}

.species-card:hover {
  background: #fff7f0;
}

.dataset-card {
  background: var(--result);
  border: 1px solid #f8dfba;
  border-radius: 8px;
  padding: 18px 38px 38px;
}

.dataset-card + .dataset-card {
  margin-top: 16px;
}

.dataset-card h3 {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 24px;
  font-weight: 500;
}

.dataset-card h3 a,
.file-card a {
  color: var(--accent);
}

.dataset-summary {
  margin-bottom: 24px;
  font-size: 20px;
}

.dataset-summary p {
  margin: 0;
}

.file-list {
  display: grid;
  gap: 24px;
}

.file-card {
  background: #fff;
  border: 1px solid var(--border);
  padding: 10px;
}

.file-card-header {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.file-card a {
  font-size: 20px;
  text-decoration: underline;
}

.file-preview-link {
  overflow-wrap: anywhere;
}

.download-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--accent);
  line-height: 1;
  text-decoration: none !important;
}

.download-icon svg {
  fill: currentColor;
}

.download-icon:hover,
.download-icon:focus {
  background: #fff7f0;
  border-color: #f6c79b;
  color: var(--accent-dark);
}

.file-card p,
.file-card li {
  margin: 2px 0 0;
  font-size: 18px;
}

.raw-file-view {
  margin-top: 20px;
}

.raw-file-toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.raw-file-toolbar span {
  color: var(--muted);
  font-size: 18px;
}

.raw-file-view pre {
  min-height: 70vh;
  margin: 0;
  overflow: auto;
  background: #111;
  color: #f5f5f5;
  border-radius: 4px;
  padding: 28px 36px;
  font-family: "Courier New", Courier, monospace;
  font-size: 16px;
  line-height: 1.35;
  white-space: pre;
}

.empty,
.error {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.error {
  color: #9f1d1d;
}

.search-empty {
  grid-column: 1 / -1;
}

@media (max-width: 760px) {
  .exoatom-page {
    margin-top: 30px;
  }

  .page-header {
    margin-bottom: 28px;
  }

  .page-header h1 {
    margin-bottom: 24px;
  }

  .page-header p {
    font-size: 18px;
  }

  .search-panel {
    padding: 22px;
  }

  .search-form {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .actions {
    grid-column: auto;
  }

  .species-grid {
    grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  }

  .species-card {
    width: 100%;
    height: 132px;
  }

  .dataset-card {
    padding: 18px;
  }
}


.coverage-callout,
.coverage-header,
.coverage-toolbar,
.coverage-legend,
.coverage-summary {
  margin: 20px 0;
}

.coverage-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 18px 22px;
}

.coverage-callout h2,
.coverage-header h2 {
  margin: 0 0 6px;
  font-size: 24px;
  font-weight: 500;
}

.coverage-callout p,
.coverage-header p {
  margin: 0;
  color: var(--muted);
}

.coverage-callout a,
.coverage-home-link {
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

.coverage-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.coverage-summary {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 10px;
}

.coverage-summary div {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
}

.coverage-summary strong {
  display: block;
  font-size: 24px;
}

.coverage-summary span {
  color: var(--muted);
}

.coverage-toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.coverage-search {
  display: grid;
  gap: 6px;
  color: #263242;
  font-weight: 700;
}

.coverage-search input {
  height: 40px;
  border: 1px solid #8a95a3;
  border-radius: 4px;
  padding: 8px 12px;
  font: inherit;
}

.coverage-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.coverage-filters button {
  font-size: 15px;
  padding: 8px 12px;
}

.coverage-filters button:not(.is-active) {
  background: #fff;
  color: var(--accent);
}

.coverage-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.coverage-chip {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 2px;
  color: #102030;
  font-size: 14px;
}

.coverage-both { background: #8cc979; }
.coverage-kurucz { background: #80b9e8; }
.coverage-nist { background: #f3a46f; }

.coverage-table-wrap {
  max-height: 72vh;
  overflow: auto;
  border: 1px solid var(--border);
  background: #fff;
}

.coverage-table {
  border-collapse: separate;
  border-spacing: 0;
  min-width: max-content;
  font-size: 12px;
}

.coverage-table th,
.coverage-table td {
  width: 24px;
  height: 24px;
  border-right: 1px solid #d7dce1;
  border-bottom: 1px solid #d7dce1;
  text-align: center;
  padding: 0;
}

.coverage-table thead th {
  position: sticky;
  top: 0;
  z-index: 5;
  background: #0e5b89;
  color: #fff;
  font-weight: 700;
}

.coverage-sticky {
  position: sticky;
  z-index: 4;
  background: #fff;
}

.coverage-table thead .coverage-sticky {
  z-index: 7;
  background: #0e5b89;
  color: #fff;
}

.coverage-z {
  left: 0;
  min-width: 36px;
}

.coverage-element {
  left: 36px;
  min-width: 72px;
}

.coverage-stage {
  min-width: 24px;
}

.coverage-count {
  min-width: 44px;
  background: #f7fafc;
}

.coverage-cell a {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  color: #102030;
  font-weight: 700;
  text-decoration: none;
}

.coverage-cell.coverage-both { background: #8cc979; }
.coverage-cell.coverage-kurucz { background: #80b9e8; }
.coverage-cell.coverage-nist { background: #f3a46f; }

.coverage-cell a:hover,
.coverage-cell a:focus {
  outline: 2px solid #111;
  outline-offset: -2px;
}

@media (max-width: 760px) {
  .coverage-callout,
  .coverage-header,
  .coverage-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .coverage-summary {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }
}