@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,600;0,700;0,800;1,400&family=Space+Grotesk:wght@400;600;700&display=swap');

:root {
  --bg-dark: #0a0a0a;
  --bg-card: #0e0e0e;
  --bg-panel: #121212;
  --bg-input: #050505;
  --border-subtle: #222222;
  --border-strong: #333333;
  --accent-red: #dc2626;
  --accent-red-glow: rgba(220, 38, 38, 0.4);
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.3);
  --accent-amber: #f59e0b;
  --text-main: #ededed;
  --text-muted: #888888;
  --text-dim: #555555;
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-red);
  color: white;
  padding: 8px;
  z-index: 100;
}
.skip-link:focus {
  top: 0;
}

/* Layout container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Topbar */
.topbar {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(10, 10, 10, 0.35);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 16px 0;
}

.topbar .nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand span.tag {
  background: var(--accent-red);
  color: #fff;
  font-size: 10px;
  padding: 2px 6px;
  font-weight: 700;
  border-radius: 2px;
}

nav {
  display: flex;
  gap: 24px;
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border-strong);
  background: #111;
  color: var(--text-main);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 8px 10px;
  text-transform: uppercase;
}

.menu-toggle-icon,
.menu-toggle-icon::before,
.menu-toggle-icon::after {
  display: block;
  width: 16px;
  height: 1px;
  background: currentColor;
  content: '';
  transition: transform 0.2s ease;
}

.menu-toggle-icon {
  position: relative;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
  position: absolute;
  left: 0;
}

.menu-toggle-icon::before {
  top: -5px;
}

.menu-toggle-icon::after {
  top: 5px;
}

.menu-toggle[aria-expanded='true'] .menu-toggle-icon {
  background: transparent;
}

.menu-toggle[aria-expanded='true'] .menu-toggle-icon::before {
  transform: translateY(5px) rotate(45deg);
}

.menu-toggle[aria-expanded='true'] .menu-toggle-icon::after {
  transform: translateY(-5px) rotate(-45deg);
}

nav a {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  transition: all 0.2s ease;
  padding: 6px 0;
  position: relative;
}

nav a:hover {
  color: #fff;
}

nav a.active {
  color: #fff;
  font-weight: 700;
}

nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-red);
  box-shadow: 0 0 8px rgba(225, 29, 72, 0.6);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.system-badge {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 4px 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.system-badge .pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 0px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-mono);
}

.btn-primary {
  background: rgba(220, 38, 38, 0.2);
  color: #ef4444;
  border: 1px solid #7f1d1d;
  box-shadow: 0 0 15px rgba(220, 38, 38, 0.15);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.btn-primary:hover {
  background: #dc2626;
  color: #ffffff;
  border-color: #ef4444;
  box-shadow: 0 0 25px rgba(220, 38, 38, 0.5);
  transform: translateY(-1px);
}

.btn-outline {
  background: #111;
  color: #ededed;
  border: 1px solid var(--border-strong);
}

.btn-outline:hover {
  background: #1e1e1e;
  color: #fff;
  border-color: #555;
  transform: translateY(-1px);
}

.btn-emerald {
  background: var(--accent-emerald);
  color: #000;
  border: 1px solid #34d399;
  box-shadow: 0 0 15px var(--accent-emerald-glow);
}
.btn-emerald:hover {
  background: #059669;
  color: #fff;
}

/* Section styling */
section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

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

.eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-red);
  font-weight: 700;
  margin-bottom: 8px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-desc {
  color: var(--text-muted);
  font-size: 14px;
  max-width: 680px;
  margin-top: 12px;
}

/* Corner bracket accents */
.bracket-box {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 32px;
}

.bracket-box::before, .bracket-box::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border-color: var(--accent-red);
}

.bracket-box::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--accent-red);
  border-left: 2px solid var(--accent-red);
}

.bracket-box::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--accent-red);
  border-right: 2px solid var(--accent-red);
}

/* Hero section */
.hero {
  padding: 110px 0 90px;
  position: relative;
  background-image: 
    radial-gradient(ellipse at 80% 30%, rgba(10, 10, 10, 0.4) 0%, rgba(10, 10, 10, 0.85) 60%, #0a0a0a 100%),
    linear-gradient(to bottom, rgba(10, 10, 10, 0.6) 0%, #0a0a0a 100%),
    url('images/fly_hero_bg.jpg');
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 75% 45%, rgba(225, 29, 72, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 16px 0 24px;
}

.hero-content h1 em {
  font-style: normal;
  color: var(--accent-red);
  text-shadow: 0 0 20px rgba(220, 38, 38, 0.3);
}

.hero-content p.lede {
  font-size: 16px;
  color: #a3a3a3;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-aside {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.memory-role-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.memory-role-box {
  background: #0d0d0d;
  border: 1px solid var(--border-subtle);
  padding: 12px 16px;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all 0.2s ease;
}

.memory-role-box:hover {
  border-color: #333;
}

.memory-role-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.memory-role-header .role-title {
  font-size: 12px;
  font-weight: 700;
  color: #eee;
}

.memory-role-header .role-tag {
  font-size: 9px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 2px;
  background: #1a1a1a;
  color: var(--text-dim);
  border: 1px solid #282828;
}

.memory-role-box .role-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Highlighted Procedural Memory / HiveContext Box */
.memory-role-box.highlight-hive {
  background: linear-gradient(135deg, rgba(225, 29, 72, 0.08) 0%, rgba(13, 13, 13, 0.95) 100%);
  border: 1px solid var(--accent-red);
  border-left: 3px solid var(--accent-red);
  box-shadow: 0 0 16px rgba(225, 29, 72, 0.15);
}

.memory-role-box.highlight-hive .role-title {
  color: #fff;
  display: flex;
  align-items: center;
  gap: 6px;
}

.memory-role-box.highlight-hive .role-tag {
  background: var(--accent-red);
  color: #fff;
  border-color: var(--accent-red);
  font-weight: 700;
  box-shadow: 0 0 8px rgba(225, 29, 72, 0.4);
}

.memory-role-box.highlight-hive .role-desc {
  color: #ddd;
}

/* Metrics row */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.metric-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 24px;
}

.metric-item .label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: block;
}

.metric-item .value {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  font-family: var(--font-mono);
}

.metric-item .subtext {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 6px;
  display: block;
}

/* Interactive Demo / Live Loop */
.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
}

.demo-form {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.form-group input, .form-group select, .form-group textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent-red);
}

.demo-timeline {
  display: flex;
  background: #000;
  border: 1px solid var(--border-subtle);
  margin-bottom: 20px;
}

.stage-step {
  flex: 1;
  text-align: center;
  padding: 10px 4px;
  font-size: 10px;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-dim);
  border-right: 1px solid var(--border-subtle);
  transition: all 0.2s;
}

.stage-step:last-child {
  border-right: none;
}

.stage-step.active {
  background: var(--accent-red);
  color: #fff;
  box-shadow: 0 0 10px var(--accent-red-glow);
}

.stage-step.complete {
  background: #141414;
  color: var(--accent-emerald);
}

.console-output {
  background: #050505;
  border: 1px solid var(--border-strong);
  padding: 16px;
  min-height: 240px;
  max-height: 320px;
  overflow-y: auto;
  font-size: 12px;
  color: #38bdf8;
  white-space: pre-wrap;
  word-break: break-all;
}

.console-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

/* Architecture section */
.arch-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.arch-flow {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.arch-node {
  background: #111;
  border: 1px solid var(--border-strong);
  padding: 24px;
  flex: 1;
  min-width: 220px;
  position: relative;
}

.arch-node.highlight {
  border-color: var(--accent-red);
  background: #160a0a;
}

.arch-node .node-type {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-red);
  margin-bottom: 8px;
  display: block;
}

.arch-node h3 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.arch-node p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.features-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.feature-pill {
  background: #111;
  border: 1px solid var(--border-subtle);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 16px;
  color: #ccc;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.feature-pill::before {
  content: '✓';
  color: var(--accent-emerald);
  font-weight: bold;
}

/* Repositories Gateway Cards */
.repo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.repo-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s;
  position: relative;
}

.repo-card:hover {
  border-color: #444;
  transform: translateY(-2px);
}

.repo-card .repo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.repo-card .repo-title {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.repo-card p {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.repo-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.stack-tag {
  background: #161616;
  border: 1px solid var(--border-subtle);
  color: #aaa;
  font-size: 10px;
  text-transform: uppercase;
  padding: 4px 8px;
}

/* Code Snippet Box */
.code-box {
  background: #050505;
  border: 1px solid var(--border-strong);
  position: relative;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #111;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.code-box pre {
  padding: 20px;
  font-size: 12px;
  color: #34d399;
  overflow-x: auto;
  line-height: 1.6;
}

/* Memory Taxonomy & Comparison Table */
.taxonomy-table-wrapper {
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  margin: 32px 0;
}

.taxonomy-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.taxonomy-table th, .taxonomy-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.taxonomy-table th {
  background: #121212;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 700;
}

.taxonomy-table tr:last-child td {
  border-bottom: none;
}

.taxonomy-table tr.highlight-row {
  background: rgba(220, 38, 38, 0.06);
  border-left: 3px solid var(--accent-red);
}

.taxonomy-table tr.highlight-row td {
  color: #fff;
  font-weight: 600;
}

.badge-tag {
  display: inline-block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border-radius: 2px;
  font-weight: 700;
}

.badge-local {
  background: #1c1c1c;
  color: #a3a3a3;
  border: 1px solid #333;
}

.badge-hive {
  background: var(--accent-red);
  color: #fff;
  box-shadow: 0 0 10px var(--accent-red-glow);
}

/* Engineering Scenario & Economics Showcase */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.scenario-card {
  padding: 28px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.scenario-card.silo {
  border-left: 3px solid #ef4444;
  background: #110909;
}

.scenario-card.hive {
  border-left: 3px solid var(--accent-emerald);
  background: #09120e;
}

.scenario-card h3 {
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.scenario-card .scenario-tag {
  display: inline-block;
  font-size: 10px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border-radius: 2px;
  font-weight: 700;
  width: fit-content;
}

.scenario-card.silo .scenario-tag {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.scenario-card.hive .scenario-tag {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.scenario-card .token-math-box {
  background: #050505;
  border: 1px solid #222;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  border-radius: 2px;
}

.scenario-card.silo .token-math-box {
  color: #fca5a5;
  border-color: #381b1b;
}

.scenario-card.hive .token-math-box {
  color: #86efac;
  border-color: #143324;
}

.scenario-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.scenario-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 12px;
  color: #ccc;
}

.scenario-card li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.scenario-card li span.icon {
  font-weight: bold;
}

.scenario-token-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
}

.scenario-token-footer .token-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.scenario-token-footer .token-value {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.scenario-card.silo .scenario-token-footer .token-value {
  color: #ef4444;
  text-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}

.scenario-card.hive .scenario-token-footer .token-value {
  color: #10b981;
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

/* Footer */
footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
  background: #050505;
  color: var(--text-dim);
  font-size: 12px;
}

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

/* Responsive */
@media (max-width: 900px) {
  .hero-grid, .demo-grid, .repo-grid, .metrics-grid, .scenario-grid {
    grid-template-columns: 1fr;
  }
  .topbar .nav-wrapper {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
  }
  .menu-toggle {
    display: inline-flex;
  }
  nav {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid var(--border-subtle);
    margin-top: 4px;
    padding-top: 8px;
  }
  nav.is-open {
    display: flex;
  }
  nav a {
    padding: 9px 0;
  }
  .topbar-actions {
    display: none;
  }
  .hero {
    padding: 72px 0 64px;
  }
  .hero-content h1 {
    font-size: 36px;
  }
  section {
    padding: 64px 0;
  }
  .section-title {
    font-size: 28px;
  }
  .bracket-box, .arch-diagram, .repo-card {
    padding: 24px;
  }
  .taxonomy-table th, .taxonomy-table td {
    padding: 12px 14px;
  }
}
}