/* ── Base & Utilities ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; }

/* ── Reveal Animations (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.revealed {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal.revealed:nth-child(2) { transition-delay: 100ms; }
  .reveal.revealed:nth-child(3) { transition-delay: 200ms; }
}

/* Fallback: content always visible if JS disabled */
:not(.reveal) { opacity: 1 !important; transform: none !important; }

/* ── Navbar Scroll State ── */
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06), 0 8px 32px rgba(10, 22, 40, 0.06);
}

/* ── Mobile Menu ── */
#mobile-menu {
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #F0FAF6; }
::-webkit-scrollbar-thumb { background: #B3EAD4; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #7ED9B8; }

/* ── Selection ── */
::selection { background: #B3EAD4; color: #0A1628; }