/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }

/* ── Floating animation for stat cards ── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}
@keyframes float-delayed {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}
.floating-card { animation: float 3.5s ease-in-out infinite; }
.floating-card-delayed { animation: float-delayed 4s ease-in-out infinite; }

/* ── Scroll reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}
/* If JS is disabled or prefers-reduced-motion is set, content is already visible */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ── Navbar scroll state ── */
nav.scrolled {
  background: rgba(59, 7, 100, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ── Mobile menu transition ── */
#mobileMenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
#mobileMenu.open {
  max-height: 400px;
}

/* ── Smooth scroll offset for fixed nav ── */
section[id] {
  scroll-margin-top: 80px;
}

/* ── Button focus styles ── */
a:focus-visible, button:focus-visible {
  outline: 2px solid #fbbf24;
  outline-offset: 2px;
  border-radius: 4px;
}
</style>