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

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 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; }
}

/* ── Header scroll state ── */
#site-header.scrolled {
  background: rgba(247, 245, 240, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(11, 29, 58, 0.08);
}

/* ── Mobile menu transitions ── */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

/* ── Smooth image loading ── */
img {
  background-color: rgba(11, 29, 58, 0.05);
}

/* ── Selection color ── */
::selection {
  background: #5EC4B6;
  color: #0B1D3A;
}