/* KnowledgeOS — AEL Design System */

:root {
  --ael-blue: #0074FF;
  --ael-gold: #FFD700;
  --ael-teal: #00FFCC;
  --ael-purple: #6C47FF;
  --ael-pink: #FF4D8D;
  --ael-bg: #0B1220;
  --ael-bg-alt: #0F1729;
  --ael-bg-card: rgba(15, 23, 41, 0.8);
  --ael-text: #E6EEF8;
  --ael-text-muted: #8899B3;
  --ael-border: rgba(0, 116, 255, 0.15);
  --ael-glass: rgba(255, 255, 255, 0.03);
  --ael-radius: 12px;
  --ael-radius-sm: 8px;
  --ael-transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --ael-font: 'Inter', system-ui, -apple-system, sans-serif;
  --ael-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--ael-font);
  background: var(--ael-bg);
  color: var(--ael-text);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Effects */
.ael-bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 116, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 116, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.ael-bg-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 116, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Navigation */
.ael-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 24px;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ael-border);
}

.ael-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ael-nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ael-nav-logo {
  width: 32px;
  height: 32px;
}

.ael-nav-name {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.ael-nav-links {
  display: flex;
  gap: 32px;
}

.ael-nav-links a {
  color: var(--ael-text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color var(--ael-transition);
}

.ael-nav-links a:hover {
  color: var(--ael-blue);
}

/* Hero */
.ael-hero {
  position: relative;
  z-index: 1;
  padding: 160px 24px 100px;
  text-align: center;
}

.ael-hero-inner {
  max-width: 800px;
  margin: 0 auto;
}

.ael-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--ael-glass);
  border: 1px solid var(--ael-border);
  border-radius: 100px;
  font-size: 13px;
  font-family: var(--ael-mono);
  color: var(--ael-blue);
  margin-bottom: 32px;
}

.ael-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--ael-teal);
  border-radius: 50%;
  animation: ael-pulse 2s ease-in-out infinite;
}

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

.ael-hero-title {
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.ael-hero-title-line {
  display: block;
}

.ael-hero-title-accent {
  background: linear-gradient(135deg, var(--ael-blue), var(--ael-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ael-hero-subtitle {
  font-size: 18px;
  color: var(--ael-text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.ael-hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 64px;
}

/* Buttons */
.ael-btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border-radius: var(--ael-radius-sm);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--ael-transition);
  cursor: pointer;
  border: none;
}

.ael-btn-primary {
  background: var(--ael-blue);
  color: #fff;
}

.ael-btn-primary:hover {
  background: #0062E0;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 116, 255, 0.3);
}

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

.ael-btn-outline:hover {
  border-color: var(--ael-blue);
  color: var(--ael-blue);
}

/* Stats */
.ael-hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
}

.ael-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ael-stat-value {
  font-size: 36px;
  font-weight: 700;
  font-family: var(--ael-mono);
  color: var(--ael-blue);
}

.ael-stat-label {
  font-size: 13px;
  color: var(--ael-text-muted);
  margin-top: 4px;
}

/* Sections */
.ael-section {
  position: relative;
  z-index: 1;
  padding: 100px 24px;
}

.ael-section-alt {
  background: var(--ael-bg-alt);
}

.ael-section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.ael-section-header {
  text-align: center;
  margin-bottom: 64px;
}

.ael-section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--ael-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ael-blue);
  margin-bottom: 16px;
}

.ael-section-header h2 {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.ael-section-header p {
  font-size: 18px;
  color: var(--ael-text-muted);
}

/* Architecture Grid */
.ael-arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.ael-arch-card {
  background: var(--ael-bg-card);
  border: 1px solid var(--ael-border);
  border-radius: var(--ael-radius);
  padding: 32px;
  transition: all var(--ael-transition);
  backdrop-filter: blur(10px);
}

.ael-arch-card:hover {
  border-color: var(--ael-blue);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 116, 255, 0.1);
}

a.ael-arch-card {
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
}

.ael-arch-layer {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--ael-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ael-teal);
  padding: 4px 10px;
  background: rgba(0, 255, 204, 0.08);
  border-radius: 6px;
  margin-bottom: 16px;
}

.ael-arch-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.ael-arch-card p {
  font-size: 14px;
  color: var(--ael-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.ael-arch-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  font-family: var(--ael-mono);
  color: var(--ael-text-muted);
}

/* Developer Resources Grid */
.ael-resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

a.ael-resource-card {
  display: block;
  background: var(--ael-bg-card);
  border: 1px solid var(--ael-border);
  border-radius: var(--ael-radius);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: all var(--ael-transition);
  backdrop-filter: blur(10px);
}

.ael-resource-card:hover {
  border-color: var(--ael-blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 116, 255, 0.1);
}

.ael-resource-icon {
  font-size: 28px;
  margin-bottom: 12px;
  line-height: 1;
}

.ael-resource-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.ael-resource-card p {
  font-size: 13px;
  color: var(--ael-text-muted);
  line-height: 1.5;
}

/* Code Block */
.ael-code-block {
  max-width: 700px;
  margin: 0 auto;
  border-radius: var(--ael-radius);
  overflow: hidden;
  border: 1px solid var(--ael-border);
}

.ael-code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--ael-border);
}

.ael-code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.ael-code-dot-red { background: #FF5F57; }
.ael-code-dot-yellow { background: #FFBD2E; }
.ael-code-dot-green { background: #28CA41; }

.ael-code-title {
  margin-left: 8px;
  font-size: 13px;
  font-family: var(--ael-mono);
  color: var(--ael-text-muted);
}

.ael-code {
  padding: 24px;
  background: rgba(0, 0, 0, 0.4);
  font-family: var(--ael-mono);
  font-size: 14px;
  line-height: 1.7;
  overflow-x: auto;
}

.ael-code-kw { color: var(--ael-purple); }
.ael-code-str { color: var(--ael-teal); }
.ael-code-fn { color: var(--ael-blue); }
.ael-code-comment { color: #556677; font-style: italic; }

/* Charter Grid */
.ael-charter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.ael-charter-card {
  background: var(--ael-bg-card);
  border: 1px solid var(--ael-border);
  border-radius: var(--ael-radius);
  padding: 32px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  backdrop-filter: blur(10px);
}

.ael-charter-icon {
  font-size: 24px;
  font-weight: 700;
  font-family: var(--ael-mono);
  color: var(--ael-blue);
  opacity: 0.6;
  flex-shrink: 0;
}

.ael-charter-card h3 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
}

/* Status Block */
.ael-charter-status {
  max-width: 600px;
  margin: 0 auto;
  background: var(--ael-bg-card);
  border: 1px solid var(--ael-border);
  border-radius: var(--ael-radius);
  overflow: hidden;
}

.ael-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--ael-border);
}

.ael-status-row:last-child {
  border-bottom: none;
}

.ael-status-label {
  font-size: 14px;
  color: var(--ael-text-muted);
}

.ael-status-value {
  font-size: 14px;
  font-family: var(--ael-mono);
  font-weight: 500;
}

.ael-status-active {
  color: var(--ael-teal);
}

/* Footer */
.ael-footer {
  position: relative;
  z-index: 1;
  padding: 48px 24px;
  border-top: 1px solid var(--ael-border);
  background: var(--ael-bg-alt);
}

.ael-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ael-footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.ael-footer-logo {
  width: 40px;
  height: 40px;
}

.ael-footer-brand strong {
  display: block;
  font-size: 15px;
}

.ael-footer-brand span {
  display: block;
  font-size: 13px;
  color: var(--ael-text-muted);
}

.ael-footer-links {
  display: flex;
  gap: 24px;
}

.ael-footer-links a {
  color: var(--ael-text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: color var(--ael-transition);
}

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

.ael-footer-meta {
  display: flex;
  gap: 24px;
  font-size: 12px;
  color: var(--ael-text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .ael-hero { padding: 120px 20px 60px; }
  .ael-hero-title { font-size: 40px; }
  .ael-hero-actions { flex-direction: column; align-items: center; }
  .ael-hero-stats { gap: 24px; flex-wrap: wrap; }
  .ael-nav-links { display: none; }
  .ael-nav-links a { font-size: 12px; }
  .ael-footer-inner { flex-direction: column; gap: 24px; text-align: center; }
  .ael-footer-links { flex-direction: column; align-items: center; gap: 12px; }
  .ael-footer-meta { flex-direction: column; align-items: center; }
  .ael-resources-grid { grid-template-columns: 1fr; }
}