/* ── Base & Utilities ── */
*, *::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%; }

/* ── Reveal animations (progressive enhancement) ── */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal.is-hidden {
    opacity: 0;
    transform: translateY(24px);
  }
  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
  /* stagger children */
  .reveal-grid > .reveal { transition-delay: calc(var(--i, 0) * 0.1s); }
}

/* ── Navbar scroll state ── */
#site-header.scrolled {
  background: rgba(253, 249, 243, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(6, 78, 59, 0.08);
}

/* ── Mobile menu transitions ── */
#mobile-menu {
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
#mobile-menu.open {
  display: flex;
}
#mobile-menu.closed {
  opacity: 0;
  visibility: hidden;
}

/* ── Smooth image loading ── */
img {
  background-color: color-mix(in srgb, currentColor 5%, transparent);
}

/* ── Selection color ── */
::selection {
  background: color-mix(in srgb, #059669 30%, transparent);
  color: #064E3B;
}