/* ========== BASE & RESET ========== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

/* ========== FLOATING ANIMATIONS ========== */
@keyframes float-slow {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes float-medium {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-7px); }
}

@keyframes float-fast {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
}

.animate-float-slow {
  animation: float-slow 5s ease-in-out infinite;
}

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

.animate-float-fast {
  animation: float-fast 3.5s ease-in-out infinite;
}

/* ========== SCROLL REVEAL ========== */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .animate-float-slow,
  .animate-float-medium,
  .animate-float-fast {
    animation: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ========== MOBILE MENU ========== */
#mobile-menu {
  animation: slideDown 0.25s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== NAVBAR SCROLL STATE ========== */
#navbar.scrolled {
  box-shadow: 0 1px 20px rgba(6, 79, 70, 0.08);
}

/* ========== LINK HOVER EFFECTS ========== */
a {
  text-decoration: none;
}

/* ========== SUBTLE SELECTION COLOR ========== */
::selection {
  background-color: #a7f3d0;
  color: #064e3b;
}