:root{
  /* Premium Modern Theme */
  --bg-primary:#0F172A;
  --bg-secondary:#1E293B;
  --bg-tertiary:#334155;
  --accent-primary:#3B82F6;
  --accent-secondary:#8B5CF6;
  --accent-tertiary:#06B6D4;
  --accent-success:#10B981;
  --text-primary:#F8FAFC;
  --text-secondary:#CBD5E1;
  --text-muted:#94A3B8;
  --border:#334155;
  --glass-bg:rgba(30,41,59,0.7);
  --glass-border:rgba(148,163,184,0.1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

/* Animated gradient background */
.bg-animated{
  position:fixed;
  inset:0;
  z-index:0;
  background:linear-gradient(135deg,#0F172A 0%,#1E293B 50%,#334155 100%);
}
.bg-animated::before{
  content:'';
  position:absolute;
  inset:-50%;
  background:radial-gradient(circle at 20% 50%,rgba(59,130,246,0.15) 0%,transparent 50%),
             radial-gradient(circle at 80% 50%,rgba(139,92,246,0.12) 0%,transparent 50%);
  animation:float 20s ease-in-out infinite;
}
.bg-animated::after{
  content:'';
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(circle at 1px 1px,rgba(148,163,184,0.08) 1px,transparent 0);
  background-size:50px 50px;
  opacity:0.3;
}

@keyframes float{
  0%,100%{transform:translate(0,0) rotate(0deg)}
  33%{transform:translate(30px,-30px) rotate(5deg)}
  66%{transform:translate(-30px,30px) rotate(-5deg)}
}

/* Glassmorphism utilities */
.glass{
  background:var(--glass-bg);
  backdrop-filter:blur(20px) saturate(180%);
  border:1px solid var(--glass-border);
}

/* Premium button styles */
.btn-primary{
  position:relative;
  padding:0.875rem 2rem;
  font-size:0.95rem;
  font-weight:600;
  color:#fff;
  background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));
  border:none;
  border-radius:12px;
  cursor:pointer;
  overflow:hidden;
  transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  box-shadow:0 4px 20px rgba(59,130,246,0.3);
  text-decoration:none;
  display:inline-block;
}
.btn-primary::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,0.2),transparent);
  opacity:0;
  transition:opacity 0.3s;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 30px rgba(59,130,246,0.4);
}
.btn-primary:hover::before{opacity:1}
.btn-primary:active{transform:translateY(0)}

.btn-secondary{
  padding:0.875rem 2rem;
  font-size:0.95rem;
  font-weight:600;
  color:var(--text-primary);
  background:transparent;
  border:2px solid var(--border);
  border-radius:12px;
  cursor:pointer;
  transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  text-decoration:none;
  display:inline-block;
}
.btn-secondary:hover{
  border-color:var(--accent-primary);
  background:rgba(59,130,246,0.1);
  transform:translateY(-2px);
}

/* Card animations */
.card{
  background:var(--glass-bg);
  backdrop-filter:blur(20px);
  border:1px solid var(--glass-border);
  border-radius:16px;
  transition:all 0.4s cubic-bezier(0.4,0,0.2,1);
}
.card:hover{
  transform:translateY(-8px) scale(1.02);
  border-color:rgba(59,130,246,0.3);
  box-shadow:0 20px 60px rgba(0,0,0,0.3),0 0 0 1px rgba(59,130,246,0.2);
}

/* Fade in animations */
.fade-in{
  opacity:0;
  transform:translateY(30px);
  transition:all 0.8s cubic-bezier(0.4,0,0.2,1);
}
.fade-in.visible{
  opacity:1;
  transform:translateY(0);
}

/* Slide in from sides */
.slide-in-left{
  opacity:0;
  transform:translateX(-60px);
  transition:all 0.9s cubic-bezier(0.4,0,0.2,1);
}
.slide-in-left.visible{
  opacity:1;
  transform:translateX(0);
}

.slide-in-right{
  opacity:0;
  transform:translateX(60px);
  transition:all 0.9s cubic-bezier(0.4,0,0.2,1);
}
.slide-in-right.visible{
  opacity:1;
  transform:translateX(0);
}

/* Scale in effect */
.scale-in{
  opacity:0;
  transform:scale(0.9);
  transition:all 0.7s cubic-bezier(0.4,0,0.2,1);
}
.scale-in.visible{
  opacity:1;
  transform:scale(1);
}

/* Stagger children animation */
.stagger-children > *{
  opacity:0;
  transform:translateY(20px);
  transition:all 0.6s cubic-bezier(0.4,0,0.2,1);
}
.stagger-children.visible > *:nth-child(1){animation:fadeInUp 0.6s ease-out 0.1s forwards}
.stagger-children.visible > *:nth-child(2){animation:fadeInUp 0.6s ease-out 0.2s forwards}
.stagger-children.visible > *:nth-child(3){animation:fadeInUp 0.6s ease-out 0.3s forwards}
.stagger-children.visible > *:nth-child(4){animation:fadeInUp 0.6s ease-out 0.4s forwards}
.stagger-children.visible > *:nth-child(5){animation:fadeInUp 0.6s ease-out 0.5s forwards}
.stagger-children.visible > *:nth-child(6){animation:fadeInUp 0.6s ease-out 0.6s forwards}

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

/* Smooth scroll reveal */
@media (prefers-reduced-motion:no-preference){
  .animate-on-scroll{
    opacity:0;
    transform:translateY(40px);
  }
  .animate-on-scroll.animated{
    animation:slideUp 0.8s cubic-bezier(0.4,0,0.2,1) forwards;
  }
}
@keyframes slideUp{
  to{opacity:1;transform:translateY(0)}
}

/* Text gradient */
.text-gradient{
  background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary),var(--accent-tertiary));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

/* Pulse animation */
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:0.7;transform:scale(1.05)}
}
.pulse{animation:pulse 3s ease-in-out infinite}

/* Shimmer effect */
@keyframes shimmer{
  0%{background-position:200% center}
  100%{background-position:-200% center}
}
.shimmer{
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.1),transparent);
  background-size:200% 100%;
  animation:shimmer 3s linear infinite;
}