:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --accent-primary: #6366f1;
  --accent-secondary: #a855f7;
  --border-color: #374151;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --warning-color: #f59e0b;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  padding-bottom: 4rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header & Nav */
header {
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(17, 24, 39, 0.8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-badge {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent-primary);
}

/* Hero Section */
.hero {
  padding: 5rem 0 3rem;
  text-align: center;
  background: radial-gradient(circle at top, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 42rem;
  margin: 0 auto 2rem;
}

.badge-v060 {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
  font-size: 0.875rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  display: inline-block;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

/* Alerts / Banners */
.alert-banner {
  background-color: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  color: #fef3c7;
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
  display: flex;
  gap: 0.75rem;
}

.alert-banner strong {
  color: var(--warning-color);
}

/* Features Grid */
.features-section {
  padding: 3rem 0;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
  border-left: 4px solid var(--accent-primary);
  padding-left: 0.75rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.75rem;
  transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.4);
}

.card-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: rgba(99, 102, 241, 0.1);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.925rem;
}

/* Demo Dashboard */
.demo-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2.5rem;
  margin-top: 4rem;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.dashboard-title h2 {
  font-size: 1.5rem;
  font-weight: 700;
}

.dashboard-title p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.selector-tabs {
  display: flex;
  background-color: var(--bg-primary);
  padding: 0.25rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
}

.selector-tab {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all 0.2s;
}

.selector-tab.active {
  background-color: var(--bg-tertiary);
  color: white;
}

.dashboard-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.metric-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1.25rem;
  text-align: center;
}

.metric-card .value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-card .label {
  font-size: 0.775rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

.json-viewer-container {
  background-color: #030712;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1.5rem;
  max-height: 450px;
  overflow-y: auto;
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.85rem;
  color: #38bdf8;
}

/* Site Build Info */
.build-info {
  margin-top: 1.5rem;
  font-size: 0.775rem;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Disclaimer & Footer */
.disclaimer-section {
  background-color: rgba(31, 41, 55, 0.4);
  border: 1px dashed var(--border-color);
  border-radius: 0.75rem;
  padding: 2rem;
  margin-top: 4rem;
}

.disclaimer-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.disclaimer-section p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

footer {
  text-align: center;
  padding: 4rem 0 2rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
  margin-top: 6rem;
}

/* Responsive Utilities */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
  }
  .header-container {
    flex-direction: column;
    justify-content: center;
    height: auto;
    padding: 1rem 0;
    gap: 0.75rem;
  }
}