:root {
  /* Cyberpunk Neon Dark Theme */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --bg-card: #151520;
  
  /* Neon Colors */
  --neon-cyan: #00f5ff;
  --neon-pink: #ff00ff;
  --neon-purple: #b829dd;
  --neon-blue: #0080ff;
  --neon-green: #00ff88;
  --neon-yellow: #ffdd00;
  --neon-orange: #ff6600;
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-purple) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--neon-pink) 0%, var(--neon-orange) 100%);
  --gradient-glow: linear-gradient(135deg, rgba(0, 245, 255, 0.1) 0%, rgba(184, 41, 221, 0.1) 100%);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-neon-cyan: 0 0 10px rgba(0, 245, 255, 0.5), 0 0 20px rgba(0, 245, 255, 0.3);
  --shadow-neon-pink: 0 0 10px rgba(255, 0, 255, 0.5), 0 0 20px rgba(255, 0, 255, 0.3);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background Grid Effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--neon-cyan);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon-purple);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 3rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.25rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
}

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

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--neon-pink);
  text-shadow: 0 0 10px rgba(255, 0, 255, 0.5);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  font-family: var(--font-primary);
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--bg-primary);
  box-shadow: var(--shadow-neon-cyan);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.7), 0 0 40px rgba(0, 245, 255, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--neon-cyan);
  border: 2px solid var(--neon-cyan);
}

.btn-secondary:hover {
  background: rgba(0, 245, 255, 0.1);
  box-shadow: var(--shadow-neon-cyan);
}

.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-slow);
}

.btn-glow:hover::before {
  left: 100%;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid rgba(0, 245, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
}

.card:hover {
  border-color: rgba(0, 245, 255, 0.3);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 245, 255, 0.1);
  transform: translateY(-4px);
}

/* Form Elements */
.input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-primary);
  transition: var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 245, 255, 0.3);
}

.input::placeholder {
  color: var(--text-muted);
}

.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300f5ff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* Neon Text Effects */
.text-neon-cyan {
  color: var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.text-neon-pink {
  color: var(--neon-pink);
  text-shadow: 0 0 10px rgba(255, 0, 255, 0.5);
}

.text-neon-purple {
  color: var(--neon-purple);
  text-shadow: 0 0 10px rgba(184, 41, 221, 0.5);
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Animations */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--neon-cyan), 0 0 10px var(--neon-cyan); }
  50% { box-shadow: 0 0 20px var(--neon-cyan), 0 0 30px var(--neon-cyan); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

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

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-glow {
  animation: glow 2s infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-slide-in {
  animation: slideIn 0.5s ease forwards;
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

.section {
  padding: var(--space-3xl) 0;
}

.text-center {
  text-align: center;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.grid {
  display: grid;
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
}