/* ============================================================================
   Lux Website - Sleek and Noble
   Translucent black, white, and gold with strong serif typography
   ============================================================================ */

/* CSS Variables */
:root {
  /* Backgrounds */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);
  --bg-code: rgba(212, 175, 55, 0.05);

  /* Text */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);

  /* Gold accents */
  --gold: #d4af37;
  --gold-light: #f4d03f;
  --gold-dark: #b8860b;
  --gold-glow: rgba(212, 175, 55, 0.3);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-gold: rgba(212, 175, 55, 0.3);

  /* Typography */
  --font-heading: "Playfair Display", Georgia, serif;
  --font-body: "Source Serif Pro", Georgia, serif;
  --font-code: "JetBrains Mono", "Fira Code", monospace;

  /* Spacing */
  --container-width: 1200px;
  --section-padding: 6rem 2rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--gold-light);
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============================================================================
   Navigation
   ============================================================================ */

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: var(--container-width);
  margin: 0 auto;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.1em;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--gold);
}

.nav-github {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.nav-github:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* ============================================================================
   Hero Section
   ============================================================================ */

.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 4rem 2rem;
  background:
    radial-gradient(ellipse at top, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
    var(--bg-primary);
}

.hero-logo {
  margin-bottom: 2rem;
}

.logo-ascii {
  font-family: var(--font-code);
  font-size: 2rem;
  color: var(--gold);
  line-height: 1.2;
  text-shadow: 0 0 30px var(--gold-glow);
}

.hero-title {
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-size: 1.35rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 3rem;
}

.hero-cta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  padding: 1rem 2.5rem;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: #0a0a0a;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: #0a0a0a;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--gold-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}

.btn-secondary:hover {
  background: rgba(212, 175, 55, 0.1);
  color: var(--gold-light);
}

/* ============================================================================
   Code Demo Section
   ============================================================================ */

.code-demo {
  padding: var(--section-padding);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.code-demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.code-block {
  background: var(--bg-code);
  border: 1px solid var(--border-gold);
  border-radius: 8px;
  overflow: hidden;
}

.code {
  padding: 1.5rem;
  margin: 0;
  overflow-x: auto;
}

.code code {
  font-family: var(--font-code);
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.6;
}

.code-explanation h3 {
  margin-bottom: 1.5rem;
}

.code-explanation ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.code-explanation li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
}

.code-explanation li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--gold);
}

.code-explanation .highlight {
  font-size: 1.1rem;
  color: var(--gold-light);
  font-style: italic;
}

/* ============================================================================
   Value Props Section
   ============================================================================ */

.value-props {
  padding: var(--section-padding);
}

.value-props-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.value-prop {
  text-align: center;
  padding: 2.5rem 2rem;
}

.value-prop-title {
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  color: var(--gold);
}

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

/* ============================================================================
   Cards
   ============================================================================ */

.card {
  background: var(--bg-glass);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 8px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.card:hover {
  background: var(--bg-glass-hover);
  border-color: rgba(212, 175, 55, 0.3);
}

/* ============================================================================
   Benchmarks Section
   ============================================================================ */

.benchmarks {
  padding: var(--section-padding);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.benchmarks h2 {
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 3rem;
}

.benchmarks-chart {
  max-width: 600px;
  margin: 0 auto;
}

.benchmark-row {
  display: grid;
  grid-template-columns: 60px 1fr 80px;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}

.benchmark-lang {
  font-family: var(--font-code);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.benchmark-bar-container {
  height: 24px;
  background: var(--bg-glass);
  border-radius: 4px;
  overflow: hidden;
}

.benchmark-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold));
  border-radius: 4px;
  transition: width 1s ease;
}

.benchmark-time {
  font-family: var(--font-code);
  font-size: 0.9rem;
  color: var(--gold-light);
  text-align: right;
}

.benchmarks-note {
  text-align: center;
  margin-top: 2rem;
}

.benchmarks-note a {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.benchmarks-note a:hover {
  color: var(--gold);
}

/* ============================================================================
   Testing Section
   ============================================================================ */

.testing {
  padding: var(--section-padding);
}

.testing h2 {
  text-align: center;
  margin-bottom: 0.5rem;
}

.testing .code-demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .testing .code-demo-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
   Quick Start Section
   ============================================================================ */

.quick-start {
  padding: var(--section-padding);
  text-align: center;
}

.quick-start h2 {
  margin-bottom: 2rem;
}

.quick-start .code-block {
  max-width: 600px;
  margin: 0 auto 2rem;
  text-align: left;
}

/* ============================================================================
   Footer
   ============================================================================ */

.footer {
  padding: 4rem 2rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.footer-column h4 {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ============================================================================
   Documentation Layout
   ============================================================================ */

.doc-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: calc(100vh - 80px);
}

.doc-sidebar {
  position: sticky;
  top: 80px;
  height: calc(100vh - 80px);
  overflow-y: auto;
  padding: 2rem;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-subtle);
}

.doc-sidebar-section {
  margin-bottom: 2rem;
}

.doc-sidebar-section h4 {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.doc-sidebar-section ul {
  list-style: none;
}

.doc-nav-link {
  display: block;
  padding: 0.4rem 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.doc-nav-link:hover {
  color: var(--gold);
}

.doc-nav-link.active {
  color: var(--gold-light);
  font-weight: 600;
}

.doc-content {
  padding: 3rem;
  max-width: 800px;
}

.doc-content h1 {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-gold);
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 1024px) {
  .code-demo-grid {
    grid-template-columns: 1fr;
  }

  .value-props-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-sidebar {
    position: static;
    height: auto;
  }
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 1.5rem;
  }

  .hero {
    min-height: 80vh;
    padding: 3rem 1.5rem;
  }

  .logo-ascii {
    font-size: 1.5rem;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-brand {
    max-width: none;
  }
}

/* ============================================================================
   Syntax Highlighting
   ============================================================================ */

.hljs-keyword { color: var(--gold); }
.hljs-type { color: #82aaff; }
.hljs-string { color: #c3e88d; }
.hljs-number { color: #f78c6c; }
.hljs-comment { color: var(--text-muted); font-style: italic; }
.hljs-function { color: var(--gold-light); }
.hljs-effect { color: var(--gold-light); font-weight: 600; }

/* ============================================================================
   Animations
   ============================================================================ */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero > * {
  animation: fadeIn 0.8s ease forwards;
}

.hero > *:nth-child(1) { animation-delay: 0.1s; }
.hero > *:nth-child(2) { animation-delay: 0.2s; }
.hero > *:nth-child(3) { animation-delay: 0.3s; }
.hero > *:nth-child(4) { animation-delay: 0.4s; }