/* ==========================================================================
   SOVEREIGN NAVIGATOR - HIGH ACUITY UBER-BLACK DESIGN SYSTEM
   ========================================================================== */

:root {
  --bg-core: #000000;
  --bg-surface: #070709;
  --bg-card: #0d0e12;
  --bg-card-hover: #13151b;
  --bg-glass: rgba(13, 14, 18, 0.75);
  
  --border-subtle: #1a1c23;
  --border-active: #2f3442;
  --border-amber: rgba(245, 158, 11, 0.4);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-amber: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.15);
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', 'Syne', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
}

/* Accessibility Focus States (WCAG AAA) */
*:focus-visible {
  outline: 2px solid var(--accent-amber);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--accent-amber);
  color: #000000;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 20px;
}

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

html {
  background-color: var(--bg-core);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #15161e 0%, #000000 70%);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-amber);
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(0, 0, 0, 0.8);
  border-bottom: 1px solid var(--border-subtle);
  padding: 18px 0;
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-glyph {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-amber), #b45309);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 900;
  color: #000;
  font-size: 1.1rem;
}

.brand-title {
  font-size: 1.15rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.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(--text-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s var(--ease-spring);
}

.btn-primary {
  background: var(--accent-amber);
  color: #000000;
  font-weight: 700;
}

.btn-primary:hover {
  background: #fbbf24;
  box-shadow: 0 0 20px var(--accent-amber-glow);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-active);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
}

/* Hero Section */
.hero {
  padding: 90px 0 60px;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid var(--border-amber);
  padding: 6px 16px;
  border-radius: 9999px;
  margin-bottom: 24px;
}

.hero-pill .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-amber);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 8px var(--accent-amber); }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  max-width: 950px;
  margin: 0 auto 24px;
  letter-spacing: -0.03em;
}

.hero h1 span {
  color: var(--accent-amber);
}

.hero-desc {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  max-width: 780px;
  margin: 0 auto 36px;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.browser-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* Simulator Section */
.simulator-section {
  padding: 60px 0 90px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2.3rem;
  margin-bottom: 12px;
}

.simulator-box {
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.sim-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #08090c;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 12px;
}

.site-presets {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  font-family: var(--font-mono);
  transition: all 0.2s;
}

.site-btn.active, .site-btn:hover {
  background: #191b24;
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.site-btn.active {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.audio-toggle-btn {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--border-amber);
  color: var(--accent-amber);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.sim-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border-subtle);
}

@media (max-width: 850px) {
  .sim-grid {
    grid-template-columns: 1fr;
  }
}

.sim-pane {
  padding: 30px;
}

.sim-pane.legacy {
  border-right: 1px solid var(--border-subtle);
  background: #090a0d;
}

.sim-pane.sovereign {
  background: #0d0f15;
}

.pane-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.badge-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: 700;
}

.badge-tag.legacy-tag {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-tag.sovereign-tag {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.telemetry-readout {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.speech-output-screen {
  background: #030406;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 18px;
  min-height: 180px;
  max-height: 240px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.speech-output-screen .step-entry {
  margin-bottom: 8px;
  opacity: 0.4;
  transition: opacity 0.2s;
}

.speech-output-screen .step-entry.active {
  opacity: 1;
  color: var(--accent-amber);
  font-weight: 600;
}

.speech-output-screen.sovereign-screen .step-entry.active {
  color: #38bdf8;
}

.sim-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Stencils Showcase Grid */
.stencils-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.stencil-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}

.stencil-card:hover {
  border-color: var(--border-active);
  transform: translateY(-2px);
}

.card-icon {
  width: 44px;
  height: 44px;
  background: #161821;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.stencil-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.stencil-card p {
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.stencil-rules {
  list-style: none;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

.stencil-rules li {
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.stencil-rules li::before {
  content: "→";
  color: var(--text-muted);
}

/* Architecture Tiers */
.architecture-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: #040406;
}

.tiers-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  position: relative;
}

.tier-badge {
  position: absolute;
  top: 24px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tier-card h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.tier-metric {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-amber);
  margin-bottom: 16px;
}

/* Pricing Grid */
.pricing-section {
  padding: 90px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--accent-amber);
  background: linear-gradient(180deg, #11131a 0%, #0d0e14 100%);
  box-shadow: 0 0 30px rgba(245, 158, 11, 0.1);
}

.featured-pill {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-amber);
  color: #000;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 9999px;
  text-transform: uppercase;
}

.price-title {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.price-desc {
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.price-number {
  font-size: 3rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 6px;
}

.price-number span {
  font-size: 1rem;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-weight: 400;
}

.price-features {
  list-style: none;
  margin: 30px 0;
  flex-grow: 1;
}

.price-features li {
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.price-features li::before {
  content: "✓";
  color: var(--accent-amber);
  font-weight: 700;
}

/* Call to Action */
.cta-section {
  padding: 80px 0 100px;
  text-align: center;
}

.cta-box {
  background: radial-gradient(circle at 50% 50%, #171822 0%, #0a0b0e 100%);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  max-width: 800px;
  margin: 0 auto;
}

.waitlist-form {
  display: flex;
  gap: 12px;
  max-width: 520px;
  margin: 32px auto 0;
}

@media (max-width: 600px) {
  .waitlist-form {
    flex-direction: column;
  }
}

.input-field {
  flex-grow: 1;
  background: #030406;
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  color: #fff;
  font-size: 1rem;
  font-family: var(--font-sans);
}

.input-field:focus {
  border-color: var(--accent-amber);
  outline: none;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}