@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600;700;900&family=Crimson+Pro:ital,wght@0,300;0,400;0,600;1,300;1,400&family=JetBrains+Mono:wght@300;400;500&display=swap');

:root {
  --obsidian: #070a08;
  --deep: #0d1410;
  --surface: #111a13;
  --card: #162019;
  --border: #1e2e21;
  --border-light: #2a3f2d;
  --gold: #c9a84c;
  --gold-light: #e8c96a;
  --gold-dim: #8a6e2e;
  --emerald: #2d6a4f;
  --emerald-bright: #3d8f68;
  --emerald-glow: rgba(45,106,79,0.3);
  --text: #e2d9c8;
  --text-muted: #8a9e8d;
  --text-dim: #4a5e4d;
  --white: #f5f0e8;
  --crescent: #c9a84c;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--obsidian);
  color: var(--text);
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 18px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* GEOMETRIC BACKGROUND */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    repeating-linear-gradient(60deg, transparent, transparent 40px, rgba(201,168,76,0.015) 40px, rgba(201,168,76,0.015) 41px),
    repeating-linear-gradient(-60deg, transparent, transparent 40px, rgba(201,168,76,0.015) 40px, rgba(201,168,76,0.015) 41px),
    repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(201,168,76,0.01) 40px, rgba(201,168,76,0.01) 41px);
  pointer-events: none;
  z-index: 0;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(7,10,8,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: 'Cinzel', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold);
  text-decoration: none;
  letter-spacing: 0.15em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nav-brand span { color: var(--text-muted); font-weight: 400; font-size: 0.85rem; }

.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0 1rem;
  height: 64px;
  line-height: 64px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s, background 0.2s;
  text-transform: uppercase;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--gold);
  background: rgba(201,168,76,0.05);
}

.nav-version {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--emerald-bright);
  border: 1px solid var(--emerald);
  padding: 0.2rem 0.6rem;
  letter-spacing: 0.08em;
}

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 4rem 4rem;
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(45,106,79,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-geo {
  position: absolute;
  right: -100px;
  top: 50%;
  transform: translateY(-50%);
  width: 700px;
  height: 700px;
  opacity: 0.04;
  pointer-events: none;
}

.hero-content { position: relative; z-index: 2; max-width: 760px; }

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero-eyebrow::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--gold);
  display: block;
}

.hero-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 0.3rem;
}

.hero-title .os-suffix {
  color: var(--gold);
}

.hero-subtitle-ar {
  font-family: 'Cinzel', serif;
  font-size: 1.4rem;
  color: var(--gold-dim);
  margin-bottom: 1.5rem;
  font-style: italic;
  letter-spacing: 0.05em;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 3rem;
  font-weight: 300;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--gold);
  color: var(--obsidian);
  padding: 0.9rem 2rem;
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-decoration: none;
  text-transform: uppercase;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  display: inline-block;
}

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201,168,76,0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  padding: 0.9rem 2rem;
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-decoration: none;
  text-transform: uppercase;
  border: 1px solid var(--border-light);
  transition: all 0.3s;
  display: inline-block;
}

.btn-ghost:hover {
  border-color: var(--gold-dim);
  color: var(--gold);
}

/* SECTION */
section { position: relative; z-index: 1; }

.section-pad { padding: 6rem 4rem; }

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.section-label::after {
  content: '';
  flex: 1;
  max-width: 80px;
  height: 1px;
  background: var(--gold-dim);
}

.section-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.section-body {
  color: var(--text-muted);
  max-width: 640px;
  font-size: 1.05rem;
  line-height: 1.85;
}

/* DIVIDER */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0 4rem;
}

/* MODULE GRID */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.module-card {
  background: var(--deep);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: block;
  transition: background 0.3s;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}

.module-card:hover { background: var(--surface); }
.module-card:hover::before { transform: scaleX(1); }

.module-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
}

.module-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

.module-name {
  font-family: 'Cinzel', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.3rem;
}

.module-name .os { color: var(--gold); }

.module-ar {
  font-family: 'Crimson Pro', serif;
  font-style: italic;
  color: var(--gold-dim);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.module-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.module-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.module-features li {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  padding-left: 1rem;
  position: relative;
}

.module-features li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold-dim);
}

.module-arrow {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  color: var(--gold-dim);
  font-size: 1.2rem;
  transition: transform 0.3s;
}

.module-card:hover .module-arrow { transform: translate(4px, -4px); }

/* STATS ROW */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stat-item {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border);
}

.stat-item:last-child { border-right: none; }

.stat-num {
  font-family: 'Cinzel', serif;
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* REVOLUTION TIMELINE */
.timeline {
  position: relative;
  padding-left: 3rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--gold-dim), var(--emerald), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
}

.timeline-item:last-child { border-bottom: none; margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -2.6rem;
  top: 0.4rem;
  width: 12px;
  height: 12px;
  border: 2px solid var(--gold);
  background: var(--obsidian);
  transform: rotate(45deg);
}

.timeline-dot.active { background: var(--gold); }

.timeline-version {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.timeline-name {
  font-family: 'Cinzel', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.8rem;
}

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

/* PAGE HERO (inner pages) */
.page-hero {
  padding: 9rem 4rem 5rem;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold-dim);
  padding: 0.3rem 0.8rem;
  margin-bottom: 2rem;
}

.page-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.page-title .gold { color: var(--gold); }

.page-tagline {
  font-family: 'Crimson Pro', serif;
  font-style: italic;
  font-size: 1.3rem;
  color: var(--gold-dim);
  margin-bottom: 1.5rem;
}

.page-desc {
  max-width: 580px;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

/* FEATURE GRID */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 2rem;
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}

.feature-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-3px);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-family: 'Cinzel', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.6rem;
  letter-spacing: 0.05em;
}

.feature-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* DATA TABLE */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
}

.data-table th {
  text-align: left;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--gold-dim);
  color: var(--gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.65rem;
}

.data-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  vertical-align: top;
}

.data-table tr:hover td { background: rgba(201,168,76,0.03); }

.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid;
}

.tag-green { border-color: var(--emerald); color: var(--emerald-bright); }
.tag-gold { border-color: var(--gold-dim); color: var(--gold); }
.tag-dim { border-color: var(--border-light); color: var(--text-dim); }

/* FOOTER */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 3rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  font-family: 'Cinzel', serif;
  font-size: 1rem;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.15em;
}

.footer-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ENTRY ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes rotateSlow {
  from { transform: translateY(-50%) rotate(0deg); }
  to { transform: translateY(-50%) rotate(360deg); }
}

.animate-up { animation: fadeUp 0.8s ease forwards; }
.animate-up-2 { animation: fadeUp 0.8s 0.15s ease forwards; opacity: 0; }
.animate-up-3 { animation: fadeUp 0.8s 0.3s ease forwards; opacity: 0; }
.animate-up-4 { animation: fadeUp 0.8s 0.45s ease forwards; opacity: 0; }

/* GEOMETRIC SVG */
.geo-pattern {
  animation: rotateSlow 60s linear infinite;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  nav { padding: 0 1rem; }
  .nav-links { display: none; }
  .hero, .section-pad { padding: 6rem 1.5rem 3rem; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .divider { margin: 0 1.5rem; }
  footer { padding: 2rem 1.5rem; flex-direction: column; align-items: flex-start; }
  .page-hero { padding: 7rem 1.5rem 3rem; }
}