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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Animation keyframes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(3deg); }
}

@keyframes floatDelayed {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(-2deg); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
}

.animate-fade-up {
  animation: fadeInUp 0.7s ease-out both;
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

.animate-float-delayed {
  animation: floatDelayed 5s ease-in-out infinite 1s;
}

.animate-float-slow {
  animation: floatSlow 6s ease-in-out infinite 2s;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Nav link underline */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: #065f46;
  border-radius: 1px;
  transition: all 0.2s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 60%;
}

/* Mobile nav */
.mobile-nav-link {
  display: block;
}

#mobileMenu.open {
  opacity: 1;
  pointer-events: auto;
}

#mobileMenu.closed {
  opacity: 0;
  pointer-events: none;
}

/* Header shadow on scroll */
#header.scrolled {
  box-shadow: 0 4px 20px rgba(6, 95, 70, 0.08);
}

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

::-webkit-scrollbar-track {
  background: #fdf9ed;
}

::-webkit-scrollbar-thumb {
  background: #a7f3d0;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #6ee7b7;
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #065f46;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Selection */
::selection {
  background: #d1fae5;
  color: #064e3b;
}