/* Building section (/building/ - the structure browser). Scoped under body.section-building.
   Reuses the Containment Void tokens from css/wiki.css - contract: apps/hub/wiki/DESIGN.md */

body.section-building .bd-lede { color: var(--ink-faint); max-width: 66ch; }

/* ---- sticky category jumper ---- */

body.section-building .bd-jump {
  position: sticky; top: var(--header-h); z-index: 30;
  display: flex; align-items: center; gap: 6px;
  overflow-x: auto; scrollbar-width: thin;
  margin: 14px -4px 6px; padding: 8px 4px;
  background: color-mix(in srgb, var(--void-1) 90%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
body.section-building .bd-jump a {
  flex: 0 0 auto; white-space: nowrap;
  padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--glass);
  color: var(--ink-dim); font-size: .78rem; font-weight: 500;
}
body.section-building .bd-jump a:hover {
  text-decoration: none; color: var(--accent); background: var(--glass-strong);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

/* ---- category sections ---- */

body.section-building .bd-cat { scroll-margin-top: calc(var(--header-h) + 58px); }
body.section-building .bd-cat h2 { margin: 30px 0 12px; }
body.section-building .bd-cat h2 span {
  color: var(--ink-faint); font: 500 .82rem var(--font-body); margin-left: 8px;
}

body.section-building .bd-grid {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* ---- structure cards ---- */

body.section-building .bd-card {
  padding: 14px 16px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--glass);
  scroll-margin-top: calc(var(--header-h) + 58px);
}
body.section-building .bd-card:target {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 0 18px color-mix(in srgb, var(--accent) 30%, transparent);
}

body.section-building .bd-head { display: flex; align-items: center; gap: 12px; }
body.section-building .bd-head .wk-tile,
body.section-building .bd-head .wk-tile-fallback {
  width: 52px; height: 52px; font-size: 1.1rem; flex: 0 0 auto;
}
body.section-building .bd-head h3 { margin: 0; flex: 1 1 auto; min-width: 0; }
body.section-building .bd-power {
  flex: 0 0 auto; font-size: .7rem;
  color: var(--el-electric);
  border-color: color-mix(in srgb, var(--el-electric) 45%, transparent);
  background: color-mix(in srgb, var(--el-electric) 10%, transparent);
}

body.section-building .bd-desc { color: var(--ink-faint); font-size: .86rem; margin: 10px 0 0; }
body.section-building .bd-facts {
  display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px;
}
body.section-building .bd-facts:empty { display: none; }
body.section-building .bd-fact { color: var(--ink-faint); font-size: .82rem; }
body.section-building .bd-fact b { color: var(--ink); font-weight: 600; }

body.section-building .bd-mats { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
body.section-building .bd-mats .wk-chip img { border-radius: 4px; background: var(--void-2); }
body.section-building .bd-mats .wk-chip b { font-weight: 600; color: var(--ink); }
body.section-building .bd-mats a.wk-chip:hover {
  text-decoration: none; background: var(--glass-strong);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}
body.section-building p.bd-free { color: var(--ink-faint); font-size: .82rem; margin: 10px 0 0; }

/* ---- responsive ---- */

@media (max-width: 720px) {
  body.section-building .bd-grid { grid-template-columns: 1fr; }
}