/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ── Nav ── */
#nav {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
#nav.scrolled {
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(4, 120, 87, 0.08);
}

/* ── Mobile menu ── */
#mobile-menu.open { opacity: 1; pointer-events: all; }
#mobile-menu.closed { opacity: 0; pointer-events: none; }
.mobile-link { transition: opacity 0.3s ease; }

/* ── Hero stat cards ── */
.stat-card {
  animation: float 6s ease-in-out infinite;
}
.stat-card:nth-child(1) { animation-delay: 0s; }
.stat-card:nth-child(2) { animation-delay: -1.5s; }
.stat-card:nth-child(3) { animation-delay: -3s; }
.stat-card:nth-child(4) { animation-delay: -4.5s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ── 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 */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .stat-card { animation: none; }
  html { scroll-behavior: auto; }
  img, .service-card img { transition: none; }
}

/* ── Service cards ── */
.service-card {
  transition: background 0.5s ease;
}
.service-card:hover .service-icon {
  transform: scale(1.1);
}

/* ── Custom scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #faf9f6; }
::-webkit-scrollbar-thumb { background: #047857; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #065f46; }

/* ── Selection ── */
::selection { background: rgba(4, 120, 87, 0.15); color: #047857; }