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

/* ── Nav ──────────────────────────────────────────── */
header { transition: box-shadow 0.3s ease; }
header.scrolled { box-shadow: 0 1px 20px rgba(10,30,56,0.08); }

/* ── Scroll Reveal (progressive enhancement) ──────── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(28px);
    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; }
}

/* Fallback: content always visible if JS disabled or reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ── Selection ─────────────────────────────────────── */
::selection { background: rgba(212,160,23,0.25); color: #0f2a4b; }

/* ── Custom scrollbar ─────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #eef5fb; }
::-webkit-scrollbar-thumb { background: #a9c6e4; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #7eadd6; }