:root {
  /* Core Colors */
  --bg-dark: #070B14;       /* Deeper Slate/Navy */
  --bg-card: #12192B;       /* Glassmorphism base */
  --bg-card-hover: #1A243A;

  --accent-primary: #3b82f6;   /* Electric Blue */
  --accent-primary-hover: #2563eb;
  --accent-secondary: #0ea5e9; /* Light Blue for gradients */
  --accent-glow: rgba(59, 130, 246, 0.4);
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;

  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Typography */
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', Courier, monospace;

  /* Layout */
  --max-width: 1280px;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 8rem;

  /* Components */
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --card-border: 1px solid rgba(255, 255, 255, 0.05);
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(3rem, 6vw, 5rem); }
h2 { font-size: clamp(2.5rem, 5vw, 4rem); }
h3 { font-size: clamp(1.8rem, 3vw, 2.5rem); }

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

a:hover {
  color: var(--accent-primary-hover);
}

/* Layout Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-2xl) 0;
}

/* UI Components */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
}

.btn-outline:hover {
  background: rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--card-border);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xl);
  transition: all 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 20px var(--accent-glow);
  background: var(--bg-card-hover);
}

/* Text Gradients */
.text-gradient {
  background: linear-gradient(to right, var(--accent-secondary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Badges / Tags */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 9999px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(7, 11, 20, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 1rem 0;
  transition: all 0.3s ease;
}

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

.nav-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 50%;
  height: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(7,11,20,0) 70%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
}

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

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Footer */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  background: #05080f;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

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

.footer-col ul li {
  margin-bottom: 0.8rem;
}

.footer-col ul li a {
  color: var(--text-secondary);
}

.footer-col ul li a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.animate-fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none; /* simple mobile menu hidden for now */
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
}