*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(3deg); }
}

@keyframes float-delay {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(-2deg); }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-float-delay {
  animation: float-delay 8s ease-in-out infinite;
}

.animate-fade-in-up {
  animation: fade-in-up 0.8s ease-out forwards;
}

.animate-fade-in-up-delay {
  animation: fade-in-up 0.8s ease-out 0.15s forwards;
  opacity: 0;
}

.animate-fade-in-up-delay-2 {
  animation: fade-in-up 0.8s ease-out 0.3s forwards;
  opacity: 0;
}

.animate-fade-in-up-delay-3 {
  animation: fade-in-up 0.8s ease-out 0.45s forwards;
  opacity: 0;
}

/* Scroll-triggered animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Nav scroll state */
.nav-scrolled {
  background: rgba(255, 255, 255, 0.92) !important;
  backdrop-filter: blur(20px) !important;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06), 0 4px 20px rgba(15, 23, 42, 0.04);
}

.nav-scrolled .nav-link {
  color: rgba(15, 23, 42, 0.7) !important;
}

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

::-webkit-scrollbar-track {
  background: #f0fdf4;
}

::-webkit-scrollbar-thumb {
  background: #86efac;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #4ade80;
}

/* Selection */
::selection {
  background: rgba(94, 234, 212, 0.3);
  color: #0f172a;
}