:root {
  --color-bg: #f6f8fa;
  --color-surface: #ffffff;
  --color-border: #d0d7de;
  --color-text: #1f2328;
  --color-muted: #57606a;
  --color-accent: #0969da;
  --color-accent-hover: #0550ae;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(31, 35, 40, 0.08);
  --max-width: 1180px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); text-decoration: underline; }

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  font-size: 0.9em;
  background: rgba(175, 184, 193, 0.2);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-title {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-text);
}
.site-title:hover { text-decoration: none; color: var(--color-accent); }

.site-nav a { font-size: 0.95rem; }

.site-footer {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.9rem;
}

h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 1.8rem; margin-top: 0; }
h2 { font-size: 1.35rem; margin-top: 2rem; }
h3 { font-size: 1.05rem; margin: 0; }

.lead { color: var(--color-muted); max-width: 70ch; }
.muted { color: var(--color-muted); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); border: 0;
}

/* Filter bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0 1rem;
  flex-wrap: wrap;
}
.filter-bar input[type="search"] {
  flex: 1 1 320px;
  min-width: 240px;
  padding: 0.6rem 0.85rem;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}
.filter-bar input[type="search"]:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: -1px;
  border-color: var(--color-accent);
}
.filter-count { color: var(--color-muted); font-size: 0.9rem; }

/* Tile grid */
.tile-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.tile:hover { border-color: var(--color-accent); }
.tile[hidden] { display: none; }

.tile-header { min-width: 0; }
.tile-title {
  font-weight: 600;
  font-size: 1rem;
  word-break: break-word;
  display: inline-block;
}
.tile-group { color: var(--color-muted); font-weight: 500; }
.tile-sep { color: var(--color-muted); margin: 0 0.1em; }
.tile-artifact { color: var(--color-text); }

.tile-stats {
  display: flex;
  gap: 1rem;
  margin: 0;
}
.tile-stats > div { flex: 1; }
.tile-stats dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  margin-bottom: 0.15rem;
}
.tile-stats dd { margin: 0; font-size: 1.25rem; }
.tile-stats dd strong { font-weight: 600; }

.tile-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  border-top: 1px solid var(--color-border);
  padding-top: 0.6rem;
  margin-top: auto;
}

.no-results {
  text-align: center;
  padding: 2rem 0;
}

/* Detail page */
.coord-title {
  word-break: break-word;
}
.coord-group { color: var(--color-muted); font-weight: 500; }
.coord-sep { color: var(--color-muted); margin: 0 0.1em; }

.summary-grid {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.summary-grid li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}
.summary-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  margin-bottom: 0.25rem;
}

.mapping-section { margin-top: 2rem; }
.mapping-file {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.mapping-file-header h3 { font-weight: 600; }
.mapping-file-meta {
  margin: 0.25rem 0 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}
.mapping-file-coordinates {
  margin: 0.5rem 0 0.75rem;
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.table-wrapper { overflow-x: auto; }
.versions-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.versions-table th,
.versions-table td {
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
.versions-table th {
  background: var(--color-bg);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-muted);
}
.versions-table tr:last-child td { border-bottom: none; }
.gen-list, .excluded-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.gen-list li, .excluded-list li { margin: 0.1rem 0; }