/* Cathedral shell — shared tokens, nav, and base layout (mark-walhimer.com) */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@300;400;500&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;1,300;1,400&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

:root {
  --page-bg: #ffffff;
  --text: #3a3834;
  --text-soft: #6b6760;
  --dim: #6b6760;
  --rule: rgba(58, 56, 52, 0.12);
  --accent: #b8976a;
  --border: rgba(58, 56, 52, 0.18);
  --paper: #ffffff;
  --ink: #3a3834;
  --ink-soft: #6b6760;
  --gold: #b8976a;
  --gold-light: #d4c4a8;
  --line: rgba(58, 56, 52, 0.12);
}

html { scroll-behavior: smooth; }

body.shell-page {
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-weight: 300;
  font-size: 15px;
  line-height: 1.65;
  min-height: 100vh;
}

*, *::before, *::after { box-sizing: border-box; }

nav {
  display: flex;
  align-items: stretch;
  padding: 0 40px;
  border-bottom: 1px solid var(--line);
  background: var(--page-bg);
  position: relative;
  z-index: 200;
}

.nav-logo {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  padding: 22px 32px 22px 0;
  margin-right: 8px;
  border-right: 1px solid var(--line);
}

.nav-links { display: flex; align-items: stretch; gap: 0; }

.nav-links a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-soft);
  text-decoration: none;
  padding: 22px 20px;
  transition: color 0.15s;
  display: flex;
  align-items: center;
}

.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--accent); border-bottom: 1px solid var(--accent); margin-bottom: -1px; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  padding: 10px 12px;
  background: var(--page-bg);
  border: 1px solid var(--line);
  color: var(--ink);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle svg { width: 20px; height: 14px; display: block; }
.nav-toggle .line { stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; fill: none; }

@media (max-width: 800px) {
  nav { flex-wrap: wrap; align-items: center; padding: 0 16px; }
  .nav-toggle { display: flex; }
  .nav-logo {
    padding: 18px 16px 18px 0;
    margin-right: 0;
    border-right: none;
    flex: 1;
    min-width: 0;
  }
  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    border-top: 1px solid var(--line);
  }
  nav.nav-open .nav-links { display: flex; }
  .nav-links a {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    border-left: 3px solid transparent;
  }
  .nav-links a.active {
    border-bottom: 1px solid var(--line);
    border-left-color: var(--accent);
    margin-bottom: 0;
  }
}

.shell-footer {
  border-top: 1px solid var(--line);
  padding: 22px 40px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--dim);
  letter-spacing: 0.08em;
  background: var(--page-bg);
}

.shell-footer-fixed {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
}

/* Catalog / data-dense pages: monospace body, same nav */
body.catalog-page {
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 300;
  min-height: 100vh;
}

/* Installations index — serif body, same nav */
body.installations-page {
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 300;
  min-height: 100vh;
}