:root {
  --navy: #0F172A;
  --navy-2: #1E3A5F;
  --electric: #3B82F6;
  --electric-hover: #1D4ED8;
  --slate-white: #F8FAFC;
  --white: #FFFFFF;
  --slate-500: #64748B;
  --slate-400: #94A3B8;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --blue-50: #EFF6FF;
  --critical: #EF4444;
  --warning: #F59E0B;
  --caution: #EAB308;
  --clear: #10B981;
  --info: #60A5FA;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Inter', system-ui, -apple-system, sans-serif; /* aliased to sans — no mono face site-wide */
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--navy);
  background: var(--slate-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--electric); text-decoration: none; }
a:hover { color: var(--electric-hover); text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }

/* ===== HEADER ===== */
.site-header {
  background: var(--navy);
  color: var(--white);
  padding: 16px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
}
.brand-logo { height: 38px; width: auto; display: block; }
.brand:hover { text-decoration: none; opacity: 0.9; }
.nav-links {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--slate-300);
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: background .15s, color .15s;
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.06); text-decoration: none; }
.nav-links a[aria-current="page"] {
  color: var(--white);
  background: rgba(59,130,246,0.18);
  box-shadow: inset 0 -2px 0 var(--electric);
}
@media (max-width: 640px) {
  .nav { gap: 12px; }
  .nav-links { gap: 4px; width: 100%; justify-content: flex-start; }
  .nav-links a { padding: 6px 10px; font-size: 13px; }
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--navy);
  color: var(--slate-400);
  padding: 32px 24px;
  text-align: center;
  font-size: 13px;
}
.site-footer a { color: var(--slate-300); }
.site-footer a:hover { color: var(--white); }
.site-footer .tm { font-size: 0.7em; vertical-align: super; line-height: 0; margin-left: 2px; }

/* ===== BUTTONS ===== */
.btn {
  background: var(--electric);
  color: var(--white);
  border: none;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background .15s, transform .1s;
}
.btn:hover { background: var(--electric-hover); }
.btn:active { transform: translateY(1px); }
.btn:disabled { background: var(--slate-300); cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-ghost {
  background: transparent;
  color: var(--electric);
  border: 1px solid var(--electric);
}
.btn-ghost:hover { background: var(--blue-50); }

/* ===== NAV STEPS (1 Pinpoint, 2 Search, 3 Inspect) + divider + resources ===== */
.nav-step { display: inline-flex; align-items: center; gap: 6px; }
.nav-step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(59,130,246,0.18);
  color: var(--electric);
  font-size: 10px; font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}
.nav-step[aria-current="page"] .nav-step-num {
  background: var(--electric); color: var(--white);
}
.nav-divider {
  display: inline-block;
  width: 1px; height: 18px;
  background: rgba(255,255,255,0.18);
  margin: 0 6px;
}
@media (max-width: 640px) {
  .nav-divider { display: none; }
  .nav-step-num { width: 16px; height: 16px; font-size: 9px; }
}

/* ===== FOOTER BRAND (icon + wordmark) ===== */
.footer-brand {
  display: inline-flex; align-items: center; gap: 10px;
  flex-wrap: wrap; justify-content: center;
}
.footer-icon { width: 28px; height: 28px; vertical-align: middle; }
.footer-wordmark { color: var(--slate-300); font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.footer-wordmark sup { font-size: 0.6em; vertical-align: super; margin-left: 2px; }
.footer-wordmark .vet-color { color: var(--electric); }
.footer-tag { color: var(--slate-500); }