/* ─── Base & Utilities ─── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Scroll reveal (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    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; }
}

/* ─── Mobile menu transitions ─── */
#mobileMenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
#mobileMenu.open {
  max-height: 400px;
}

/* ─── Custom scrollbar ─── */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #0f2b4c;
}
::-webkit-scrollbar-thumb {
  background: #4473ba;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #648fcd;
}

/* ─── Focus visible for accessibility ─── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #4ade80;
  outline-offset: 2px;
}

/* ─── Selection color ─── */
::selection {
  background: #4ade80;
  color: #0f2b4c;
}