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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

::selection {
  background: #a7f3d0;
  color: #064e3b;
}

/* ===== NAVBAR ===== */
#navbar {
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

#navbar.scrolled {
  background: rgba(254, 253, 248, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 20px rgba(6, 78, 59, 0.08);
}

/* ===== HERO FLOATING CARDS ===== */
.stat-card {
  animation: floatCard 3.5s ease-in-out infinite;
}

.stat-card:nth-child(2) {
  animation-delay: -1.2s;
}

.stat-card:nth-child(3) {
  animation-delay: -2.4s;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal[data-delay="0"] { transition-delay: 0ms; }
.reveal[data-delay="100"] { transition-delay: 100ms; }
.reveal[data-delay="200"] { transition-delay: 200ms; }
.reveal[data-delay="300"] { transition-delay: 300ms; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .stat-card { animation: none; }
  .group img { transition: none; }
  * { animation: none !important; transition-delay: 0 !important; }
}

/* ===== SCROLL REVEAL (JS-gated progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal-animate.visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== BUTTONS ===== */
a, button {
  -webkit-tap-highlight-color: transparent;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #fdf9ed;
}
::-webkit-scrollbar-thumb {
  background: #a7f3d0;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #6ee7b7;
}