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

/* ── Nav scroll state ── */
nav.scrolled {
  background: rgba(9, 30, 54, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

/* ── Floating animation ── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}
@keyframes floatDelayed {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}
.animate-float { animation: float 4s ease-in-out infinite; }
.animate-float-delayed { animation: floatDelayed 4.5s ease-in-out infinite 0.8s; }

/* ── Selection ── */
::selection { background: rgba(200, 164, 78, 0.3); color: #fff; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #091e36; }
::-webkit-scrollbar-thumb { background: #163a64; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #c8a44e; }

/* ── Reveal on scroll ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}