/* ── Base ── */
html { scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* ── Floating cards animation ── */
@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 4s ease-in-out infinite; }
.animate-float-medium { animation: float-medium 3.2s ease-in-out infinite; }
.animate-float-fast { animation: float-fast 2.6s ease-in-out infinite; }

/* ── Scroll reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── Mobile menu ── */
#mobileMenu { transition: max-height 0.3s ease, opacity 0.3s ease; }
#mobileMenu.open { display: block; }
.mobile-link { transition: color 0.2s ease; }

/* ── Nav scroll state ── */
nav.scrolled {
  background: rgba(2, 44, 34, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}