:root {
  --bg: #f5f3ee;
  --bg-card: #ffffff;
  --bg-soft: #ecebe4;
  --ink: #1a1d24;
  --ink-2: #4b5260;
  --ink-3: #8a8e98;
  --line: #2a2f3a;
  --line-soft: #c8c5bc;
  --line-faint: #e3e0d6;
  --accent: #0ea5a5;
  --accent-2: #f59e0b;
  --warn: #b91c1c;
  --planned: #9333ea;
  --shadow-1: 0 1px 2px rgba(20, 25, 40, 0.05), 0 4px 14px rgba(20, 25, 40, 0.06);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.dim { color: var(--ink-3); }
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* Site top bar */
.site-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-bottom: 1px solid var(--line-faint);
  background: var(--bg-card);
}
.site-top .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
}
.site-top .brand-mark {
  font-weight: 700;
  letter-spacing: 0.04em;
}
.site-top .brand-sep { color: var(--ink-3); }
.site-top .brand-product {
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.site-top .admin-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: 0.04em;
}
.site-top .admin-link:hover { color: var(--accent); }

/* Home */
.home { max-width: 1100px; margin: 0 auto; padding: 56px 32px 80px; }
.home-hero h1 {
  margin: 0 0 14px;
  font-family: 'Manrope', 'Inter', sans-serif;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.home-hero p {
  max-width: 64ch;
  color: var(--ink-2);
  font-size: 15px;
  margin: 0 0 36px;
}
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 64px;
}
.site-card {
  background: var(--bg-card);
  border: 1px solid var(--line-faint);
  border-radius: 6px;
  padding: 18px 18px 16px;
  transition: border-color 0.12s, box-shadow 0.12s;
  display: block;
}
.site-card:hover { border-color: var(--accent); box-shadow: var(--shadow-1); }
.site-card-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.site-card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.3;
}
.site-card-addr {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--ink-2);
  line-height: 1.5;
  margin-bottom: 10px;
}
.site-card-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-top: 1px dashed var(--line-faint);
  padding-top: 8px;
}

.empty {
  padding: 32px;
  border: 1px dashed var(--line-faint);
  border-radius: 6px;
  text-align: center;
  color: var(--ink-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  grid-column: 1 / -1;
}

.home-about h2 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  font-family: 'JetBrains Mono', monospace;
  margin: 0 0 10px;
}
.home-about p { color: var(--ink-2); margin: 0 0 8px; max-width: 64ch; }
.home-about a { color: var(--accent); }

/* Project banner — re-used on PIN page and schematic */
.project-banner {
  background: linear-gradient(180deg, #0e1117 0%, #161b25 100%);
  color: var(--bg-card);
  padding: 22px 32px;
  font-family: 'JetBrains Mono', monospace;
  position: relative;
}
.project-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.project-banner .pb-inner {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}
.project-banner .pb-marker {
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.04);
  padding: 12px 16px;
  border-radius: 4px;
  text-align: center;
}
.project-banner .pb-marker-label {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--accent-2);
  font-weight: 700;
}
.project-banner .pb-marker-id {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-top: 4px;
  color: #fff;
}
.project-banner .pb-eyebrow {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  font-weight: 600;
  margin-bottom: 6px;
}
.project-banner .pb-title {
  font-family: 'Manrope', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.project-banner .pb-addr {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  margin-top: 6px;
}
.project-banner .pb-addr-label {
  color: var(--accent-2);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 0.12em;
  margin-right: 6px;
}

/* PIN form */
.pin-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 32px;
}
.pin-card {
  background: var(--bg-card);
  border: 1px solid var(--line-faint);
  border-radius: 8px;
  padding: 32px 32px 28px;
  max-width: 380px;
  width: 100%;
  box-shadow: var(--shadow-1);
}
.pin-card h1 {
  margin: 0 0 6px;
  font-family: 'Manrope', sans-serif;
  font-size: 20px;
  font-weight: 700;
}
.pin-card p { margin: 0 0 18px; font-size: 13px; }
.pin-fields {
  display: flex;
  gap: 8px;
  margin: 0 auto 14px;
  justify-content: center;
}
.pin-input {
  width: 44px;
  height: 52px;
  border: 1.5px solid var(--line-soft);
  border-radius: 6px;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px;
  font-weight: 700;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.1s;
}
.pin-input:focus { outline: none; border-color: var(--accent); background: var(--bg-card); }
.pin-err {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
  font-family: 'JetBrains Mono', monospace;
}

.btn {
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--ink);
  padding: 9px 14px;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  border-radius: 4px;
  text-decoration: none;
  display: inline-block;
}
.btn:hover { background: var(--ink); color: var(--bg-card); }
.btn.primary { background: var(--ink); color: var(--bg-card); }
.btn.primary:hover { background: var(--accent); border-color: var(--accent); }
.btn.block { width: 100%; padding: 12px; font-size: 13px; }