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

/* ── Header scroll state ── */
#site-header {
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}
#site-header.scrolled {
  background: rgba(254, 253, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(22, 101, 52, 0.08);
}

/* ── Floating cards animation ── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}
@keyframes float-delayed {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}
.animate-float      { animation: float 4s ease-in-out infinite; }
.animate-float-delayed { animation: float-delayed 5s ease-in-out infinite 1s; }

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

/* ── Mobile menu ── */
#mobile-menu {
  animation: slideDown 0.25s ease;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.mobile-link {
  display: block;
  padding: 0.5rem 0;
  color: #166534;
  text-decoration: none;
  border-bottom: 1px solid #d9ecd9;
}
.mobile-link:last-child { border-bottom: none; }
.mobile-link:hover { color: #5fa85f; }

/* ── Focus visible ── */
:focus-visible {
  outline: 2px solid #3d8b3d;
  outline-offset: 2px;
}

/* ── Selection ── */
::selection {
  background: #b8dbb8;
  color: #052e16;
}