/* ============================================================
   RTT/1 — Canonical Engine Styling
   File: rtt1.css
   Session: rtt=1 | coherence=declared | drift=bounded | paradox=structural
   ============================================================ */

/* Base layout */

body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #050510;
  color: #f5f5ff;
}

/* Session context */

#rtt1-session-context,
#rtt1-session-header {
  border: 1px solid #3f51b5;
  border-radius: 8px;
  padding: 16px 20px;
  margin: 20px auto;
  max-width: 900px;
  background: radial-gradient(circle at top left, #1a237e 0, #050510 55%);
}

.session-grid {
  display: grid;
  grid-template-columns: minmax(140px, 180px) 1fr;
  gap: 6px 12px;
  margin-top: 10px;
}

.session-row .label {
  font-size: 13px;
  color: #c5cae9;
}

.session-row .value {
  font-size: 13px;
  color: #e8eaf6;
}

.session-badge {
  margin-top: 14px;
  display: inline-block;
  padding: 6px 12px;
  border-radius: 6px;
  background: #4b0082;
  color: #fff;
  font-size: 12px;
}

.session-badge .badge-title {
  font-weight: 600;
  display: block;
}

.session-badge .badge-subtitle {
  opacity: 0.85;
}

/* Hero */

#hero {
  max-width: 900px;
  margin: 10px auto 0;
  padding: 10px 20px;
}

#hero h1 {
  font-size: 24px;
  margin: 0 0 6px;
}

#hero p {
  margin: 0;
  font-size: 14px;
  color: #cfd8dc;
}

/* Navigation */

#nav {
  max-width: 900px;
  margin: 10px auto 20px;
  padding: 8px 20px;
  border-bottom: 1px solid #263238;
}

#nav a {
  margin-right: 16px;
  font-size: 13px;
  color: #90caf9;
  text-decoration: none;
}

#nav a:hover {
  text-decoration: underline;
}

/* Diagnostic table */

#rtt1-diagnostic-table {
  max-width: 900px;
  margin: 20px auto;
  padding: 16px 20px;
  border-radius: 8px;
  border: 1px solid #263238;
  background: #0b1020;
}

#rtt1-diagnostic-table h2 {
  margin-top: 0;
  font-size: 18px;
}

#rtt1-diagnostic-table .intro {
  font-size: 13px;
  color: #b0bec5;
}

table.diagnostic {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 12px;
}

table.diagnostic thead tr {
  background: #1c2331;
}

table.diagnostic th,
table.diagnostic td {
  padding: 6px 8px;
  border: 1px solid #263238;
}

table.diagnostic th {
  text-align: left;
  font-weight: 600;
  color: #e8eaf6;
}

table.diagnostic td {
  color: #cfd8dc;
}

/* Layer coloring */

.layer-clarity td:first-child {
  background: #283593;
  color: #e8eaf6;
}

.layer-structural td:first-child {
  background: #2e7d32;
  color: #e8f5e9;
}

.layer-diagnostics td:first-child {
  background: #c62828;
  color: #ffebee;
}

/* JSON block */

.diagnostic-json {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: 6px;
  background: #111827;
  color: #cfd8dc;
  font-size: 11px;
  overflow-x: auto;
}

/* Footer */

.triadic-footer {
  max-width: 900px;
  margin: 30px auto 20px;
  padding: 16px 20px;
  border-top: 1px solid #263238;
  font-size: 12px;
  color: #b0bec5;
}

.triadic-footer h3,
.triadic-footer h4 {
  margin: 0 0 6px;
  font-size: 13px;
}

.triadic-footer a {
  display: inline-block;
  margin-right: 10px;
  color: #90caf9;
  text-decoration: none;
}

.triadic-footer a:hover {
  text-decoration: underline;
}

.footer-seal {
  margin-top: 10px;
  font-size: 11px;
  color: #78909c;
}