:root {
  --bg-dark: #090a0f;
  --bg-card: #151821;
  --bg-card-hover: #1b1e2a;
  --border-color: #2a2c36;
  --border-light: #3b3e4a;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #0ea5e9;
  --accent-blue-neon: #38bdf8;
  --accent-glow: rgba(14, 165, 233, 0.12);
  --accent-glow-strong: rgba(14, 165, 233, 0.3);
  --active-green: #10b981;
  
  --font-mono: 'Fira Code', monospace;
  --font-sans: 'Inter', sans-serif;
  
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 8rem;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Effects */
.grid-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.2;
  z-index: -2;
  mask-image: linear-gradient(to bottom, white 30%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, white 30%, transparent 100%);
}

.blob {
  position: fixed;
  top: -20vh;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 80vh;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* Typography Headings */
h1, h2, h3, h4, .logo-text, .terminal-title, .logic-phase {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-padding {
  padding: var(--spacing-xxl) 0;
}

/* Navbar */
.navbar {
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(9, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  color: var(--accent-blue-neon);
  font-family: var(--font-mono);
  font-weight: 700;
}

.logo-text {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.accent-text {
  color: var(--text-secondary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.status-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  padding: 4px 12px;
  border-radius: 50px;
  border: 1px solid var(--border-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--bg-dark);
}

.btn-primary:hover {
  background-color: var(--accent-blue-neon);
  box-shadow: 0 0 15px var(--accent-glow-strong);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--accent-blue);
}

.btn-outline {
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.btn-outline:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.btn-restricted {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  cursor: default;
  pointer-events: none; /* ensures no click behavior by default if we want, or just default cursor */
}

/* Override btn base if needed */
.btn.btn-restricted {
  cursor: default;
}

.btn.btn-restricted:hover {
  background-color: transparent;
  color: var(--text-secondary);
  border-color: var(--border-light);
  box-shadow: none;
  transform: none;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.glow-effect:hover {
  box-shadow: 0 0 25px var(--accent-glow-strong);
  transform: translateY(-2px);
}

/* Pulse Dot */
.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--active-green);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Hero Section */
.hero {
  padding: var(--spacing-xxl) 0 4rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.badge-wrapper {
  margin-bottom: var(--spacing-lg);
}

.beta-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-blue-neon);
  background-color: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.2);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.accent-gradient {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin-bottom: var(--spacing-xl);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xxl);
}

/* Terminal Mockup */
.terminal-mockup {
  width: 100%;
  max-width: 800px;
  background-color: #0d0f14;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  text-align: left;
}

.terminal-header {
  background-color: #1a1d27;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background-color: #f87171; }
.dot.yellow { background-color: #fbbf24; }
.dot.green { background-color: #34d399; }

.terminal-title {
  flex: 1;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
  height: 350px;
  overflow-y: auto;
}

.terminal-line { margin-bottom: 0.5rem; }
.prompt { color: var(--accent-blue-neon); }
.output { color: var(--text-secondary); }
.success { color: var(--active-green); }
.data-block { 
  color: #a78bfa; 
  white-space: pre-wrap; 
  margin: 1rem 0;
}

.typing-cursor {
  display: inline-block;
  width: 8px;
  height: 1rem;
  background-color: var(--text-primary);
  margin-left: 4px;
  animation: blink 1s step-end infinite;
  vertical-align: middle;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Status Cards & Architecture */
.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header.center {
  text-align: center;
}

.section-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.status-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.status-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-light);
  box-shadow: 0 10px 30px -10px rgba(0,0,0,0.5);
}

.status-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.hub-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.hub-icon {
  color: var(--text-secondary);
}

.hub-name {
  font-size: 1.1rem;
}

.hub-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--active-green);
  background-color: rgba(16, 185, 129, 0.1);
  padding: 4px 10px;
  border-radius: 4px;
}

.status-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.metric {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.metric-label { color: var(--text-secondary); }
.metric-value { color: var(--text-primary); }

/* The Logic Section */
.logic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  position: relative;
}

/* Connecting line behind cards */
.logic-grid::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 10%;
  width: 80%;
  height: 1px;
  background-image: linear-gradient(90deg, transparent, var(--border-color) 20%, var(--border-color) 80%, transparent);
  z-index: 0;
}

.logic-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl) var(--spacing-lg);
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}

.logic-card:hover {
  border-color: var(--accent-blue);
  background-color: var(--bg-card-hover);
}

.logic-phase {
  font-size: 0.8rem;
  color: var(--accent-blue-neon);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.logic-icon-wrapper {
  width: 48px;
  height: 48px;
  background-color: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue-neon);
  margin-bottom: var(--spacing-md);
}

.logic-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.logic-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Access Section */
.access-section {
  padding-bottom: var(--spacing-xxl);
}

.access-box {
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(17, 19, 26, 0.5) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.access-content {
  max-width: 600px;
}

.access-title {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
}

.access-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  background-color: #050608;
  padding: var(--spacing-lg) 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-mono);
}

.footer-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  text-align: center;
}

.footer-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.footer-system-status {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-title { font-size: 2.75rem; }
  .status-grid { grid-template-columns: repeat(2, 1fr); }
  .logic-grid { grid-template-columns: 1fr; }
  .logic-grid::before { display: none; }
  .access-box { flex-direction: column; text-align: center; gap: var(--spacing-lg); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.25rem; }
  .hero-actions { flex-direction: column; width: 100%; max-width: 300px; }
  .nav-links { display: none; }
  .status-grid { grid-template-columns: 1fr; }
  .footer-content { flex-direction: column; text-align: center; }
}

/* Document Pages */
.doc-section {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xxl) 0;
}
.doc-section h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--spacing-sm);
}
.doc-section h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}
.doc-section p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}
.doc-section ul {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}
.doc-section li {
  margin-bottom: var(--spacing-sm);
}