:root {
  --color-primary: #1a2332;
  --color-primary-light: #2d3f56;
  --color-accent: #0ea5e9;
  --color-accent-hover: #0284c7;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-card: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-vehicle: #059669;
  --color-trips: #7c3aed;
  --color-alerts: #dc2626;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Code', 'Fira Code', monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 3.5rem;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

.container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* Nav */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 35, 50, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffffff;
  font-family: var(--font-mono);
}

.nav-logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: #94a3b8;
  font-size: 0.875rem;
}

.nav-links a:hover {
  color: #ffffff;
  text-decoration: none;
}

/* Hero */

.hero {
  background: var(--color-primary);
  color: #ffffff;
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-top: 0.25rem;
  font-weight: 500;
}

.hero-description {
  max-width: 40rem;
  margin: 1.5rem auto 0;
  color: #cbd5e1;
  font-size: 1.05rem;
}

.hero-by {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: #64748b;
}

.hero-by a:not(.jarvus) {
  color: #94a3b8;
}

.hero-by a:hover {
  color: #ffffff;
}

/* Stats bar */

.stats-bar {
  background: var(--color-primary-light);
  padding: 1.25rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  font-family: var(--font-mono);
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.125rem;
}

/* Main sections */

.section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.section:last-child {
  border-bottom: none;
}

.section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.section-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* Feed selector */

.feed-selector {
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
}

.feed-selector label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.feed-selector select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
}

.feed-selector select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: -1px;
}

.section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.section h3:first-of-type {
  margin-top: 1rem;
}

.section p {
  margin-bottom: 0.75rem;
}

/* Code blocks */

pre {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: 0.375rem;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
}

p code {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  padding: 0.125rem 0.375rem;
  font-size: 0.8125rem;
}

/* Agency cards */

.agency-card {
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
  background: var(--color-bg-card);
}

.agency-card summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.agency-card summary::-webkit-details-marker {
  display: none;
}

.agency-card summary::before {
  content: '\25B6';
  font-size: 0.625rem;
  color: var(--color-text-muted);
  transition: transform 0.15s;
}

.agency-card[open] summary::before {
  transform: rotate(90deg);
}

.agency-card-meta {
  margin-left: auto;
  display: flex;
  gap: 1rem;
  font-weight: 400;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.agency-card-body {
  padding: 0 1rem 1rem;
}

/* Feed table */

.feed-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.feed-table th {
  text-align: left;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.feed-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.feed-table tr:last-child td {
  border-bottom: none;
}

.feed-table .num {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

/* Feed type badges */

.badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

.badge-vehicle {
  background: #ecfdf5;
  color: var(--color-vehicle);
}

.badge-trips {
  background: #f5f3ff;
  color: var(--color-trips);
}

.badge-alerts {
  background: #fef2f2;
  color: var(--color-alerts);
}

/* Link cards */

.link-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.link-card {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.link-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 1px 4px rgba(14, 165, 233, 0.1);
  text-decoration: none;
}

.link-card strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.link-card span {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.license-note {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Loading skeleton */

.loading {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skeleton {
  background: linear-gradient(90deg, var(--color-bg-alt) 25%, #edf2f7 50%, var(--color-bg-alt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 0.5rem;
}

.skeleton-card {
  height: 3.5rem;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Error state */

.error-message {
  text-align: center;
  padding: 2rem;
  color: var(--color-text-muted);
}

.error-message button {
  margin-top: 0.75rem;
  padding: 0.5rem 1.25rem;
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  border-radius: 0.375rem;
  cursor: pointer;
  font-size: 0.875rem;
}

.error-message button:hover {
  background: var(--color-accent-hover);
}

/* Footer */

.footer {
  background: var(--color-primary);
  color: #94a3b8;
  text-align: center;
  padding: 2rem 0;
  font-size: 0.875rem;
}

.jarvus {
  color: #F47E20;
  font-weight: 600;
}

.jarvus:hover {
  color: #ffffff;
}

/* Responsive */

@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  .hero-tagline { font-size: 1rem; }
  .hero-description { font-size: 0.9375rem; }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat:last-child {
    grid-column: 1 / -1;
  }

  .stat-value { font-size: 1.25rem; }

  .nav-links { gap: 0.75rem; }
  .nav-links a { font-size: 0.8125rem; }

  .feed-table-wrap {
    overflow-x: auto;
    margin: 0 -1rem;
    padding: 0 1rem;
  }

  .feed-table { min-width: 32rem; }
}

@media (min-width: 1024px) {
  .hero { padding: 5rem 0 4rem; }
  .hero h1 { font-size: 3.5rem; }
  .section { padding: 4rem 0; }
}