/* ── Base & Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img { display: block; max-width: 100%; }

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Header scroll state ── */
#site-header {
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
#site-header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(10px);
}
#site-header.scrolled .font-display { color: #1a4d2e; }

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

/* ── Focus visible ── */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid #1a4d2e;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Selection ── */
::selection { background: rgba(26, 77, 46, 0.2); }

/* ── Subtle scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #FAFAF7; }
::-webkit-scrollbar-thumb { background: #d4d4cc; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a8a89e; }