/* Import Google Fonts with optimized loading */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary-dark: #0a0a0a;
  --secondary-dark: #0f0f0f;
  --accent-dark: #1a1a1a;
  --card-bg: #141414;
  --border-color: #2a2a2a;
  --primary-blue: #0066ff;
  --secondary-blue: #0052cc;
  --accent-cyan: #00d4ff;
  --accent-green: #00ff88;
  --accent-red: #ff4757;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #6a6a6a;
  --font-primary: 'Inter', sans-serif;
  scroll-behavior: smooth;
}

/* Performance optimizations */
* {
  will-change: auto;
}

img {
  max-width: 100%;
  height: auto;
}

/* Lazy loading styles */
.lazy {
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.lazy:not([src]) {
  visibility: hidden;
}

.lazy[src] {
  opacity: 1;
  visibility: visible;
}

body {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 50%, var(--accent-dark) 100%);
  color: var(--text-primary);
  font-family: var(--font-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Effects */
.background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: -2;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 50%, var(--accent-dark) 100%);
}

.background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(0, 255, 136, 0.1) 0%, transparent 50%);
  animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  animation: float 12s infinite ease-in-out;
  pointer-events: none;
}

.blob1 {
  width: 400px;
  height: 400px;
  background: linear-gradient(45deg, var(--primary-blue), var(--accent-cyan));
  top: 10%;
  left: 10%;
  opacity: 0.2;
  animation-delay: 0s;
}

.blob2 {
  width: 500px;
  height: 500px;
  background: linear-gradient(45deg, var(--accent-green), var(--accent-cyan));
  bottom: 5%;
  right: 5%;
  opacity: 0.15;
  animation-delay: -4s;
}

.blob3 {
  width: 300px;
  height: 300px;
  background: linear-gradient(45deg, var(--primary-blue), var(--accent-green));
  top: 50%;
  left: 60%;
  opacity: 0.1;
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1) rotate(0deg); }
  33% { transform: translateY(-30px) scale(1.1) rotate(120deg); }
  66% { transform: translateY(20px) scale(0.9) rotate(240deg); }
}

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

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.w-15 {
  width: 3.75rem;
}

.h-15 {
  height: 3.75rem;
}

@media (max-width: 768px) {
  .blob1, .blob2, .blob3 {
    display: none;
  }
  
  /* Ensure mobile text is centered and readable */
  .mobile-center {
    text-align: center !important;
  }
  
  /* Improve button spacing on mobile */
  .mobile-buttons {
    width: 100%;
    justify-content: center;
  }
  
  /* Better mobile typography */
  h1 {
    line-height: 1.2;
  }
  
  /* Mobile grid improvements */
  .mobile-grid {
    gap: 2rem;
  }
  
  /* Center achievement content on mobile */
  .achievement-mobile {
    text-align: center;
  }
  
  .achievement-mobile .flex {
    justify-content: center;
  }
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--primary-blue), var(--accent-cyan));
  border-radius: 4px;
}

::selection {
  background: var(--accent-cyan);
  color: var(--primary-dark);
}