/* =================================================================
   NOVA 2.0 — 3D Holographic Web Documentation & Portal
   Design System: Deep Cyberpunk Dark Mode, Glassmorphism, Neon Accents
   ================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&family=Fira+Code:wght@400;500;600&display=swap');

:root {
  --bg-color: #030712;
  --bg-secondary: #0b0f19;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --border-color: rgba(56, 189, 248, 0.15);
  --border-hover: rgba(56, 189, 248, 0.4);
  
  --color-cyan: #00f2ff;
  --color-purple: #bd00ff;
  --color-orange: #ff9900;
  --color-green: #00ffaa;
  --color-red: #ff3366;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Fira Code', monospace;
  
  --glow-cyan: 0 0 25px rgba(0, 242, 255, 0.35);
  --glow-purple: 0 0 25px rgba(189, 0, 255, 0.35);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-body);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Three.js Background Canvas */
#webgl-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* Header & Navigation Bar */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(3, 7, 18, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  cursor: pointer;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-cyan) 0%, rgba(0,242,255,0.1) 70%);
  border: 1.5px solid var(--color-cyan);
  box-shadow: var(--glow-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulse-glow 3s infinite alternate;
}

.logo-icon span {
  width: 12px;
  height: 12px;
  background-color: #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 10px #ffffff;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #ffffff 0%, var(--color-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  position: relative;
  padding: 0.4rem 0;
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-cyan);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-purple));
  border-radius: 2px;
  box-shadow: var(--glow-cyan);
}

/* Download PDF Button (Header) */
.btn-download-pdf {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 1.4rem;
  background: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(0, 114, 255, 0.4);
  transition: var(--transition-smooth);
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
}

.btn-download-pdf:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 30px rgba(0, 242, 255, 0.6);
  background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-purple) 100%);
}

.btn-download-pdf svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Main Content Overlay */
main {
  position: relative;
  z-index: 10;
  padding-top: 5rem;
  width: 100%;
  min-height: 100vh;
}

/* Page Section Container */
.page-section {
  display: none;
  max-width: 1250px;
  margin: 0 auto;
  padding: 3rem 2rem 6rem 2rem;
  animation: fadeIn 0.5s ease-out forwards;
}

.page-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Section */
.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 2rem auto 4rem auto;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 242, 255, 0.08);
  border: 1px solid rgba(0, 242, 255, 0.3);
  border-radius: 50px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-cyan);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 20%, var(--color-cyan) 60%, var(--color-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  font-weight: 300;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  background: linear-gradient(135deg, var(--color-cyan) 0%, #0088ff 100%);
  color: #030712;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: 12px;
  text-decoration: none;
  transition: var(--transition-smooth);
  box-shadow: var(--glow-cyan);
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px rgba(0, 242, 255, 0.6);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  border-radius: 12px;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

/* Metrics Counter Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin: 4rem 0;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  padding: 1.75rem;
  border-radius: 16px;
  text-align: center;
  transition: var(--transition-smooth);
}

.stat-card:hover {
  border-color: var(--color-cyan);
  transform: translateY(-4px);
  box-shadow: var(--glow-cyan);
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-cyan);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* Section Header */
.section-title-box {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  font-family: var(--font-mono);
  color: var(--color-cyan);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 700;
}

/* Feature Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  padding: 2.25rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-cyan), transparent);
  opacity: 0;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-5px);
  box-shadow: var(--glass-shadow);
}

.glass-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(0, 242, 255, 0.1);
  border: 1px solid rgba(0, 242, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--color-cyan);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.card-text {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.chip {
  padding: 0.25rem 0.75rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* AI Brains Section */
.brains-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.brain-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 2rem;
  text-align: center;
  transition: var(--transition-smooth);
}

.brain-card:hover {
  border-color: var(--color-purple);
  box-shadow: var(--glow-purple);
  transform: translateY(-4px);
}

.brain-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.brain-badge.groq { background: rgba(255, 153, 0, 0.15); color: var(--color-orange); border: 1px solid var(--color-orange); }
.brain-badge.nvidia { background: rgba(0, 255, 170, 0.15); color: var(--color-green); border: 1px solid var(--color-green); }
.brain-badge.gemini { background: rgba(0, 242, 255, 0.15); color: var(--color-cyan); border: 1px solid var(--color-cyan); }
.brain-badge.gemma { background: rgba(189, 0, 255, 0.15); color: var(--color-purple); border: 1px solid var(--color-purple); }
.brain-badge.openrouter { background: rgba(0, 242, 255, 0.2); color: var(--color-cyan); border: 1px solid var(--color-cyan); box-shadow: var(--glow-cyan); }

.brain-card.openrouter {
  border-color: var(--color-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 255, 0.2);
}

/* Home Feature Highlights Grid */
.home-highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.highlight-card {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.highlight-card:hover {
  border-color: var(--color-cyan);
  transform: translateY(-5px);
  box-shadow: var(--glow-cyan);
  background: rgba(15, 23, 42, 0.95);
}

.hl-tag {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--color-cyan);
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
}

.highlight-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.highlight-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.hl-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-cyan);
  font-family: var(--font-mono);
}

.brain-name {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

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

/* PDF Section Showcase */
.pdf-showcase-box {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 41, 59, 0.7) 100%);
  border: 1px solid var(--color-cyan);
  border-radius: 24px;
  padding: 3.5rem;
  display: flex;
  align-items: center;
  gap: 3rem;
  box-shadow: var(--glow-cyan);
}

.pdf-info {
  flex: 1;
}

.pdf-info h3 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.pdf-info p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.pdf-preview-card {
  width: 280px;
  height: 360px;
  background: #0b0f19;
  border: 2px dashed rgba(0, 242, 255, 0.4);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.pdf-icon-large {
  font-size: 4rem;
  color: var(--color-red);
  margin-bottom: 1rem;
}

/* Interactive Simulator & Lockscreen Remote Box */
.simulator-box {
  display: flex;
  gap: 3rem;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: var(--glass-shadow);
  margin-top: 1.5rem;
  position: relative;
  overflow: hidden;
}

.phone-mockup {
  position: relative;
  width: 280px;
  height: 480px;
  background: #090d16;
  border: 3px solid rgba(0, 242, 255, 0.4);
  border-radius: 36px;
  box-shadow: 0 0 35px rgba(0, 242, 255, 0.25);
  padding: 12px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.phone-notch {
  width: 90px;
  height: 18px;
  background: #000;
  border-radius: 0 0 10px 10px;
  margin: 0 auto 10px auto;
}

.radar-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 320px;
  height: 320px;
  margin-left: -160px;
  margin-top: -160px;
  border-radius: 50%;
  border: 1.5px solid rgba(0, 242, 255, 0.3);
  pointer-events: none;
  animation: radarWave 3s infinite linear;
}

@keyframes radarWave {
  0% { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(1.4); opacity: 0; }
}

.phone-screen {
  flex: 1;
  background: radial-gradient(circle, #0f172a 0%, #030712 100%);
  border-radius: 26px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}

.screen-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status-dot.online {
  width: 8px;
  height: 8px;
  background-color: var(--color-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-green);
  display: inline-block;
}

.sim-card {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.2rem 1rem;
  text-align: center;
  transition: var(--transition-smooth);
}

.sim-card.active-yt {
  border-color: var(--color-red);
  box-shadow: 0 0 20px rgba(255, 51, 102, 0.4);
}

.sim-card.active-ring {
  border-color: var(--color-orange);
  box-shadow: 0 0 20px rgba(255, 153, 0, 0.4);
}

.sim-card.active-unlock {
  border-color: var(--color-green);
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.4);
}

.sim-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-cyan);
  margin-bottom: 0.25rem;
}

.sim-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.sim-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.sim-action-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.btn-sim {
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 0.5rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-sim:hover {
  background: var(--color-cyan);
  color: #000;
  box-shadow: var(--glow-cyan);
}

.simulator-info {
  flex: 1;
}

.simulator-info h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 1rem;
}

.simulator-info p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.feature-list-bullet {
  list-style: none;
}

.feature-list-bullet li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.8rem;
  color: var(--text-main);
  font-size: 0.95rem;
}

.feature-list-bullet li::before {
  content: "➔";
  position: absolute;
  left: 0;
  color: var(--color-cyan);
}

/* Checklist Grid */
.checklist-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.check-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem;
  border-radius: 12px;
  transition: var(--transition-smooth);
}

.check-item:hover {
  border-color: var(--color-cyan);
  background: rgba(15, 23, 42, 0.85);
}

.check-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-purple) 100%);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.check-content h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 0.2rem;
}

.check-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Vault Links Grid */
.vault-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn-vault {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid var(--border-color);
  color: var(--color-cyan);
  padding: 0.75rem 1rem;
  border-radius: 10px;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.btn-vault:hover {
  background: var(--color-cyan);
  color: #000;
  box-shadow: var(--glow-cyan);
}

.glass-card.full-width {
  width: 100%;
}

/* Footer */
footer {
  position: relative;
  z-index: 10;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--bg-secondary);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}

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

/* Responsive Styles */
@media (max-width: 900px) {
  .hero-title { font-size: 2.8rem; }
  .pdf-showcase-box { flex-direction: column; text-align: center; }
  .simulator-box { flex-direction: column; text-align: center; }
  .nav-links { display: none; }
}