/* ── Base & Utilities ── */
html {
  scroll-behavior: smooth;
}

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

/* ── Navbar ── */
.nav-scrolled {
  background: rgba(253, 251, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(4, 120, 87, 0.08);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav:not(.nav-scrolled) {
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* ── Mobile Link ── */
.mobile-link {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: 0.75rem;
  transition: background 0.15s;
}

.mobile-link:hover {
  background: rgba(4, 120, 87, 0.08);
}

/* ── Floating Card Animations ── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

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

@keyframes float-slower {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-4px); }
}

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

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

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

/* ── Step Cards ── */
.step-card {
  position: relative;
}

.step-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 1.5rem;
  box-shadow: 0 0 0 1px rgba(4, 120, 87, 0.06);
  pointer-events: none;
}

/* ── Feature Cards ── */
.feature-card {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* ── 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);
  }

  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
  .reveal-delay-5 { transition-delay: 0.5s; }
  .reveal-delay-6 { transition-delay: 0.6s; }
}

/* ── Reduced motion: ensure everything is visible ── */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }

  .animate-float,
  .animate-float-slow,
  .animate-float-slower {
    animation: none;
  }
}