:root {
  /* Color Palette - Deep, Sophisticated, High-Contrast */
  --bg-primary: #0a0a0c;
  --bg-secondary: #141418;
  --bg-accent: #1e1e24;
  
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;
  
  --accent-primary: #3b82f6; /* Electric Blue */
  --accent-secondary: #8b5cf6; /* Royal Purple */
  --accent-glow: rgba(59, 130, 246, 0.5);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-bright: rgba(255, 255, 255, 0.15);
  
  /* Typography */
  --font-display: 'Clash Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --space-unit: 1rem;
  --container-max: 1400px;
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

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

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

/* Typography Utilities */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

.text-gradient {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Layout Components */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 8rem 0;
  position: relative;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  background: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.nav-links a:hover {
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

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

.btn-secondary:hover {
  background: var(--border-subtle);
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
}

.hero-content {
  max-width: 800px;
  animation: fadeIn 1s ease-out;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}

.feature-card {
  background: var(--bg-secondary);
  padding: 3rem 2rem;
  border-radius: 24px;
  border: 1px solid var(--border-subtle);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-5px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-primary);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* Feature Section Layout */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem auto;
}

.section-header h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

/* Split Content Layout */
.split-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
  align-items: center;
}

.split-content h2 {
  font-size: 3.5rem;
  margin-bottom: 2rem;
}

.split-content p {
  margin-bottom: 2rem;
}

.feature-list {
  list-style: none;
  margin-bottom: 2.5rem;
}

.feature-list-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.check-icon {
  stroke: var(--accent-primary);
  stroke-width: 3;
}

/* Code Preview */
.code-preview {
  background: var(--bg-primary);
  border: 1px solid var(--border-bright);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
}

.code-window-controls {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

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

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.code-block {
  font-family: 'Fira Code', monospace;
  color: var(--accent-primary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.code-keyword { color: var(--accent-secondary); }
.code-comment { color: var(--text-muted); }
.code-string { color: #ce9178; }

/* CTA Card */
.cta-card {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  border-radius: 40px;
  padding: 5rem;
  text-align: center;
  color: white;
}

.cta-card h2 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  color: white;
}

.cta-card p {
  color: rgba(255,255,255,0.8);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 3rem auto;
}

.cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.btn-white {
  background: white;
  color: var(--bg-primary);
  border: none;
}

.btn-outline-white {
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
}

/* Footer */
.footer {
  padding: 4rem 0;
  border-top: 1px solid var(--border-subtle);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
}

.footer-logo-desc {
  font-size: 0.9rem;
  max-width: 300px;
}

.footer-column h4 {
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.footer-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-list a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 2rem;
}

.footer-bottom-links a {
  color: inherit;
  text-decoration: none;
}

/* Stats Section */
.stats {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 4rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item h4 {
  font-size: 3rem;
  color: var(--text-primary);
}

.stat-item p {
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  margin-top: 0.5rem;
}

/* Floating Elements Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 3.5rem; }
  .section { padding: 5rem 0; }
}

/* Placeholders */
.placeholder-icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
}