:root {
  --app-bg: #0d1119;
  --app-surface: #121827;
  --app-surface-alt: #181f31;
  --app-border: #2b3550;
  --app-text: #f3f5ff;
  --app-muted: #aab4cd;
  --app-accent: #60a5fa;
  --app-accent-strong: #3b82f6;
}

html {
  font-size: 16px;
  min-height: 100%;
}

body.app-shell {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(1100px 600px at 20% -10%, #1a2650 0%, transparent 60%), var(--app-bg);
  color: var(--app-text);
}

a {
  color: #93c5fd;
}

a:hover {
  color: #bfdbfe;
}

.app-nav {
  border-bottom: 1px solid var(--app-border);
  background: rgba(11, 15, 24, 0.9);
  backdrop-filter: blur(10px);
}

.app-brand {
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--app-text);
}

.app-nav-links .nav-link {
  color: var(--app-muted);
  font-weight: 600;
  margin-right: 0.25rem;
}

.app-nav-links .nav-link:hover,
.app-nav-links .nav-link:focus {
  color: var(--app-text);
}

.app-nav-links .nav-link-scan {
  color: #fff;
  background: linear-gradient(135deg, var(--app-accent), #a78bfa);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  margin-left: 0.25rem;
}

.app-main {
  padding-bottom: 2rem;
}

.hero-shell {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

.hero-content,
.hero-panel {
  border: 1px solid var(--app-border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
  border-radius: 1rem;
  padding: 1.25rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--app-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.hero-content h1 {
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  margin-bottom: 0.65rem;
}

.hero-copy {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.hero-subcopy,
.hero-note {
  color: var(--app-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0;
}

.btn-primary {
  background: linear-gradient(135deg, var(--app-accent), var(--app-accent-strong));
  border: none;
}

.btn-outline-light {
  border-color: var(--app-border);
  color: var(--app-text);
}

.hero-panel h2 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
}

.hero-panel ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--app-muted);
}

.hero-panel li + li {
  margin-top: 0.55rem;
}

.footer {
  border-top: 1px solid var(--app-border);
  background: var(--app-surface);
  color: var(--app-muted);
}

.app-disclaimer {
  max-width: 72ch;
  line-height: 1.45;
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.15rem rgba(96, 165, 250, 0.25);
}

@media (max-width: 991.98px) {
  .hero-shell {
    grid-template-columns: 1fr;
  }

  .app-nav-links .nav-link {
    padding: 0.6rem 0;
  }

  .app-nav-links .nav-link-scan {
    display: inline-block;
    margin: 0.35rem 0;
  }
}