/* ─── Base ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ─── Nav scroll state ─── */
.nav-scrolled {
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

/* ─── Mobile menu ─── */
#mobile-menu {
  animation: slideDown 0.25s ease forwards;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.mobile-link {
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(45, 90, 61, 0.08);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.mobile-link:hover {
  color: #2d5a3d;
  padding-left: 0.5rem;
}

/* ─── Scroll reveal (below-fold only, progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .reveal.visible {
    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; }
}

/* ─── Selection ─── */
::selection {
  background: rgba(45, 90, 61, 0.15);
  color: #1c3827;
}

/* ─── Focus visible ─── */
:focus-visible {
  outline: 2px solid #5a9668;
  outline-offset: 2px;
}