@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Exo+2:wght@400;700;900&display=swap');

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

body {
  font-family: 'Exo 2', sans-serif;
  background: radial-gradient(circle at 20% 20%, #3b0066, #0c001a 70%);
  color: #fff;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Animated Background Grid */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 234, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 0, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
  z-index: 1;
  pointer-events: none;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

/* Neon Particles */
#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: radial-gradient(circle, #00ffff, #0099ff);
  box-shadow: 0 0 15px #00eaff, 0 0 30px #0088ff;
  pointer-events: none;
  animation: particleFloat 8s ease-in-out infinite;
}

@keyframes particleFloat {
  0%, 100% {
    transform: translateY(0) translateX(0) scale(1);
    opacity: 0.8;
  }
  50% {
    transform: translateY(-30px) translateX(15px) scale(1.2);
    opacity: 1;
  }
}

/* Header */
header {
  position: relative;
  z-index: 10;
  padding: 25px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(20, 0, 40, 0.7);
  backdrop-filter: blur(15px);
  border-bottom: 3px solid rgba(0, 234, 255, 0.4);
  box-shadow: 0 4px 30px rgba(0, 234, 255, 0.2);
}

.logo {
  font-size: 36px;
  font-weight: 900;
  font-family: 'Orbitron', sans-serif;
  background: linear-gradient(135deg, #00d9ff 0%, #ff00ff 50%, #00d9ff 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 5px;
  text-transform: uppercase;
  animation: gradientShift 4s ease infinite;
  filter: drop-shadow(0 0 20px rgba(0, 234, 255, 0.6));
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.btn {
  padding: 14px 35px;
  border: none;
  border-radius: 15px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  display: inline-block;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  font-family: 'Orbitron', sans-serif;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

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

.btn-primary {
  background: linear-gradient(135deg, #00eaff, #ff00ff);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 6px 30px rgba(0, 217, 255, 0.5);
  position: relative;
  z-index: 1;
}

.btn-primary:hover {
  box-shadow: 0 10px 45px rgba(0, 217, 255, 0.8), 0 0 30px rgba(255, 0, 255, 0.6);
  transform: translateY(-4px) scale(1.05);
}

/* Hero Section */
.hero {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 140px 20px 120px;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-title {
  font-size: 140px;
  font-weight: 900;
  margin-bottom: 25px;
  font-family: 'Orbitron', sans-serif;
  background: linear-gradient(135deg, #00d9ff 0%, #ff00ff 50%, #00d9ff 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 18px;
  text-transform: uppercase;
  animation: titleAnimation 6s ease-in-out infinite, titleGlow 3s ease-in-out infinite alternate;
  line-height: 1.1;
  position: relative;
}

.hero-title::after {
  content: '2048';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, #00d9ff 0%, #ff00ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: blur(20px);
  opacity: 0.5;
  z-index: -1;
  animation: titleBlur 3s ease-in-out infinite alternate;
}

@keyframes titleAnimation {
  0%, 100% {
    background-position: 0% 50%;
    transform: scale(1);
  }
  50% {
    background-position: 100% 50%;
    transform: scale(1.02);
  }
}

@keyframes titleGlow {
  0% {
    filter: drop-shadow(0 0 25px rgba(0, 234, 255, 0.7)) 
            drop-shadow(0 0 50px rgba(0, 234, 255, 0.5));
  }
  100% {
    filter: drop-shadow(0 0 40px rgba(255, 0, 255, 0.9)) 
            drop-shadow(0 0 80px rgba(255, 0, 255, 0.6));
  }
}

@keyframes titleBlur {
  0% {
    opacity: 0.3;
  }
  100% { 
    opacity: 0.7;
  }
}

.hero-subtitle {
  font-size: 24px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 55px;
  font-weight: 400;
  letter-spacing: 6px;
  text-transform: uppercase;
  font-family: 'Exo 2', sans-serif;
  animation: subtitleFade 2s ease-in-out infinite alternate;
}

@keyframes subtitleFade {
  0% {
    opacity: 0.7;
    transform: translateY(0);
  }
  100% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

.cta-buttons {
  display: flex;
  gap: 25px;
  justify-content: center;
  flex-wrap: wrap;
  animation: buttonsSlideUp 1s ease-out;
}

@keyframes buttonsSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn-cta {
  padding: 18px 45px;
  font-size: 19px;
  border-radius: 15px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 3px;
  border: none;
  font-family: 'Orbitron', sans-serif;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-cta::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  animation: buttonShine 3s infinite;
}

@keyframes buttonShine {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

.btn-play {
  background: linear-gradient(135deg, #ff00ff, #ff0066);
  box-shadow: 0 6px 35px rgba(255, 0, 255, 0.6);
  color: #fff;
}

.btn-play:hover {
  transform: translateY(-5px) scale(1.08);
  box-shadow: 0 12px 50px rgba(255, 0, 255, 0.9), 0 0 40px rgba(255, 0, 102, 0.7);
}

.btn-leaderboard {
  background: linear-gradient(135deg, #ffd700, #ffaa00);
  color: #0c001a;
  box-shadow: 0 6px 35px rgba(255, 215, 0, 0.6);
}

.btn-leaderboard:hover {
  transform: translateY(-5px) scale(1.08);
  box-shadow: 0 12px 50px rgba(255, 215, 0, 0.9), 0 0 40px rgba(255, 170, 0, 0.7);
}

/* Footer */
footer {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 50px 20px;
  margin-top: 150px;
  background: rgba(20, 0, 40, 0.7);
  backdrop-filter: blur(15px);
  border-top: 3px solid rgba(0, 234, 255, 0.4);
  box-shadow: 0 -4px 30px rgba(0, 234, 255, 0.2);
}

footer p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 15px;
  font-family: 'Exo 2', sans-serif;
  letter-spacing: 1.5px;
}

/* Floating Decoration Elements */
.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 234, 255, 0.15), transparent);
  border-radius: 50%;
  filter: blur(60px);
  animation: floatLeft 8s ease-in-out infinite;
  z-index: -1;
}

.hero::after {
  content: '';
  position: absolute;
  top: 30%;
  right: -100px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(255, 0, 255, 0.15), transparent);
  border-radius: 50%;
  filter: blur(60px);
  animation: floatRight 10s ease-in-out infinite;
  z-index: -1;
}

@keyframes floatLeft {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(30px, -30px) scale(1.1);
  }
}

@keyframes floatRight {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-30px, 30px) scale(1.1);
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 110px;
    letter-spacing: 12px;
  }
  
  .hero-subtitle {
    font-size: 20px;
  }
}

@media (max-width: 768px) {
  header {
    padding: 20px 25px;
    flex-direction: column;
    gap: 15px;
  }

  .logo {
    font-size: 28px;
    letter-spacing: 3px;
  }

  .hero {
    padding: 100px 20px 80px;
  }

  .hero-title {
    font-size: 80px;
    letter-spacing: 8px;
  }

  .hero-subtitle {
    font-size: 18px;
    letter-spacing: 3px;
  }

  .btn-cta {
    padding: 16px 38px;
    font-size: 17px;
  }

  footer {
    margin-top: 100px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 70px 15px 60px;
  }

  .hero-title {
    font-size: 60px;
    letter-spacing: 5px;
  }

  .hero-subtitle {
    font-size: 15px;
    letter-spacing: 2px;
    margin-bottom: 45px;
  }

  .btn-cta {
    padding: 15px 32px;
    font-size: 16px;
    letter-spacing: 2px;
  }

  .cta-buttons {
    gap: 18px;
  }
}

@media (max-width: 360px) {
  .hero-title {
    font-size: 48px;
    letter-spacing: 4px;
  }

  .hero-subtitle {
    font-size: 14px;
  }

  .btn-cta {
    padding: 14px 28px;
    font-size: 15px;
  }
}
