/* ===== COLOR VARIABLES ===== */
:root {
  /* Primary Colors */
  --royal-blue: #4169e1;
  --cobalt-blue: #0047ab;
  --deep-cobalt: #003875;
  
  /* Accent Colors */
  --glow-yellow: #ffd700;
  --bright-yellow: #ffed4e;
  --electric-blue: #00d4ff;
  
  /* Neutral Colors */
  --pure-white: #ffffff;
  --off-white: #f8f9fa;
  --light-gray: #e9ecef;
  --medium-gray: #6c757d;
  --dark-gray: #343a40;
  --near-black: #1a1a1a;
  
  /* Gradient Combinations */
  --primary-gradient: linear-gradient(135deg, var(--royal-blue), var(--cobalt-blue));
  --accent-gradient: linear-gradient(135deg, var(--glow-yellow), var(--bright-yellow));
  --hero-gradient: linear-gradient(135deg, var(--royal-blue) 0%, var(--cobalt-blue) 50%, var(--deep-cobalt) 100%);
  --glow-gradient: radial-gradient(circle, var(--glow-yellow), transparent);
  
  /* Shadow & Glow Effects */
  --glow-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
  --glow-shadow-strong: 0 0 30px rgba(255, 215, 0, 0.5);
  --blue-shadow: 0 4px 20px rgba(65, 105, 225, 0.3);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  
  /* Animation Timing */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Typography */
  --font-primary: 'Orbitron', monospace;
  --font-secondary: 'Rajdhani', sans-serif;
  
  /* Spacing */
  --section-padding: 80px 0;
  --container-padding: 0 20px;
  --border-radius: 12px;
  --border-radius-large: 20px;
}

/* ===== BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  background: var(--hero-gradient);
  color: var(--pure-white);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--container-padding);
}

/* ===== BACKGROUND EFFECTS ===== */
.bg-effects {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.floating-particles {
  position: absolute;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(2px 2px at 20px 30px, var(--glow-yellow), transparent),
    radial-gradient(2px 2px at 40px 70px, var(--electric-blue), transparent),
    radial-gradient(1px 1px at 90px 40px, var(--glow-yellow), transparent),
    radial-gradient(1px 1px at 130px 80px, var(--electric-blue), transparent),
    radial-gradient(2px 2px at 160px 30px, var(--glow-yellow), transparent);
  background-repeat: repeat;
  background-size: 200px 100px;
  animation: particleFloat 20s linear infinite;
  opacity: 0.1;
}

.grid-overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 215, 0, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 215, 0, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridPulse 4s ease-in-out infinite alternate;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: var(--glow-shadow);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 2px;
  box-shadow: var(--glow-shadow);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2), transparent);
  transition: all var(--transition-normal);
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--near-black);
  box-shadow: var(--glow-shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-shadow-strong);
}

.btn-secondary {
  background: transparent;
  color: var(--pure-white);
  border: 2px solid var(--glow-yellow);
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
}

.btn-secondary:hover {
  background: var(--accent-gradient);
  color: var(--near-black);
  transform: translateY(-2px);
  box-shadow: var(--glow-shadow-strong);
}

/* ===== CARDS ===== */
.card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 215, 0, 0.1);
  border-radius: var(--border-radius-large);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.1), transparent);
  transition: left var(--transition-slow);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--hover-shadow);
  border-color: var(--glow-yellow);
}

.card:hover::before {
  left: 100%;
}

/* ===== GLOW EFFECTS ===== */
.glow {
  box-shadow: var(--glow-shadow);
}

.glow-text {
  text-shadow: 0 0 10px var(--glow-yellow);
}

.glow-border {
  border: 1px solid var(--glow-yellow);
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
}

/* ===== ANIMATIONS ===== */
@keyframes particleFloat {
  0% { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(-100vh) rotate(360deg); }
}

@keyframes gridPulse {
  0% { opacity: 0.03; }
  100% { opacity: 0.08; }
}

@keyframes glow {
  0%, 100% { box-shadow: var(--glow-shadow); }
  50% { box-shadow: var(--glow-shadow-strong); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-glow { animation: glow 2s ease-in-out infinite; }

.fade-in { animation: fadeIn 1s ease-out; }
.slide-in-up { animation: slideInUp 0.8s ease-out; }
.slide-in-left { animation: slideInLeft 0.8s ease-out; }
.slide-in-right { animation: slideInRight 0.8s ease-out; }