:root {
  --bg: #e6e9ef;
  --surface: #f6f8fc;
  --surface-2: #edf1f7;
  --surface-3: #e1e7f0;
  --text: #1e2430;
  --muted: #5c6675;
  --line: #ccd3de;
  --line-strong: #b4becc;
  --accent: #566e90;
  --accent-soft: #dde5f1;
  --danger: #864e4e;
  --shadow: 0 8px 24px rgba(24, 32, 44, 0.08);
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, #edf1f7 0%, var(--bg) 100%);
  color: var(--text);
  font-family: "Inter", "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

a:hover {
  text-decoration: underline;
}

.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
}

.site-header {
  margin-bottom: 1.75rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #f8fafd 0%, #eff3f9 100%);
}

.header-main {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.brand-link {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

.subtitle {
  color: var(--muted);
  margin: 0.65rem 0 0.85rem;
  max-width: 70ch;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.92rem;
  color: var(--muted);
}

.search-button,
.quiet-button,
.close-button {
  border: 1px solid var(--line-strong) !important;
  border-radius: var(--radius) !important;
  background: linear-gradient(180deg, #f7f9fd 0%, #e9eef6 100%) !important;
  color: var(--text);
  padding: 0.42rem 0.78rem;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.search-button:hover,
.quiet-button:hover,
.close-button:hover {
  background: linear-gradient(180deg, #f1f5fb 0%, #e3e9f2 100%) !important;
}

.intro-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}

.intro-block h1 {
  margin: 0 0 0.35rem;
  font-size: 1.55rem;
}

.intro-block p {
  margin: 0;
  color: var(--muted);
}

.controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(170px, 1fr));
  gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 0.9rem;
  margin-bottom: 1rem;
}

.filter-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.filter-row-wide {
  grid-column: span 2;
}

.controls label {
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.controls select,
.controls input,
.search-input {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fdfefe;
  color: var(--text);
  padding: 0.45rem 0.55rem;
  font-size: 0.93rem;
}

.result-count {
  margin: 0;
  color: var(--muted);
  align-self: end;
  font-size: 0.88rem;
}

.table-section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: auto;
}

.atlas-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
}

.atlas-table th,
.atlas-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.62rem 0.72rem;
  vertical-align: top;
  font-size: 0.9rem;
}

.atlas-table th {
  text-align: left;
  background: linear-gradient(180deg, #f4f7fc 0%, #e7edf6 100%);
  color: #485261;
  position: sticky;
  top: 0;
  z-index: 1;
}

.atlas-row:hover {
  background: #eaf0f8;
}

.related-cell {
  min-width: 230px;
}

.breadcrumb {
  margin: 0.2rem 0 0.8rem;
  color: var(--muted);
  font-size: 0.92rem;
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.entry-article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem 1.15rem;
}

.entry-header h1 {
  margin: 0 0 0.65rem;
  font-size: 1.4rem;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 0.65rem;
  margin: 0 0 0.85rem;
}

.meta-grid div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5rem 0.6rem;
  background: #f9fbfe;
}

.meta-grid dt {
  margin: 0;
  font-size: 0.76rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.meta-grid dd {
  margin: 0.15rem 0 0;
}

.entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 0.7rem;
}

.related-strip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fbff;
  padding: 0.55rem 0.7rem;
  margin-bottom: 0.9rem;
}

.related-strip h2 {
  margin: 0 0 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.related-strip p {
  margin: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  margin-top: 1.15rem;
  margin-bottom: 0.45rem;
}

.markdown-body pre {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f1f4f9;
  padding: 0.8rem;
}

.markdown-body code {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88em;
}

.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--line);
  padding: 0.4rem 0.55rem;
}

.site-footer {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden {
  display: none;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(30, 28, 24, 0.36);
}

.modal-panel {
  position: relative;
  width: min(780px, calc(100vw - 2rem));
  max-height: calc(100vh - 3.5rem);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.search-input {
  width: 100%;
}

.modal-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.search-results {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f9fbff;
  min-height: 120px;
}

.search-result {
  border-bottom: 1px solid var(--line);
  padding: 0.6rem 0.75rem;
}

.search-result:last-child {
  border-bottom: none;
}

.search-result h3 {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
}

.search-meta {
  color: var(--muted);
  font-size: 0.82rem;
  margin: 0 0 0.2rem;
}

.search-summary {
  margin: 0;
  font-size: 0.88rem;
}

.search-highlight {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0 0.2rem;
  border-radius: 3px;
  font-weight: 600;
}

.empty-state {
  padding: 0.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

body.modal-open {
  overflow: hidden;
}

body.modal-open #page-content {
  filter: blur(2px);
  opacity: 0.5;
  transition: filter 140ms ease, opacity 140ms ease;
}

@media (max-width: 980px) {
  .controls {
    grid-template-columns: repeat(2, minmax(170px, 1fr));
  }

  .filter-row-wide {
    grid-column: span 2;
  }

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

@media (max-width: 640px) {
  .page-shell {
    padding: 1rem;
  }

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

  .filter-row-wide {
    grid-column: span 1;
  }

  .site-footer {
    flex-direction: column;
  }
}