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

/* ── Animations ── */
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(3deg); }
}
@keyframes float-delay {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(-2deg); }
}
.animate-float { animation: float 6s ease-in-out infinite; }
.animate-float-delay { animation: float-delay 8s ease-in-out infinite; }

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
  .reveal.revealed { 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; }
  .reveal-delay-4 { transition-delay: 0.4s; }
  .reveal-delay-5 { transition-delay: 0.5s; }
  .reveal-delay-6 { transition-delay: 0.6s; }
}

/* ── Navbar ── */
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(10, 37, 64, 0.08);
}

/* ── Mobile Menu ── */
#mobile-menu.open { opacity: 1; pointer-events: all; }
#mobile-menu.closed { opacity: 0; pointer-events: none; }

/* ── Service Cards ── */
.service-card { transform: translateY(0); }
.service-card:hover { transform: translateY(-4px); }

/* ── Gallery ── */
.gallery-item { cursor: pointer; }
.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 37, 64, 0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
  border-radius: inherit;
}
.gallery-item:hover::after { opacity: 1; }

/* ── Custom scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f0f4f8; }
::-webkit-scrollbar-thumb { background: #8faecf; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #6690be; }

/* ── Selection ── */
::selection { background: #bcebd6; color: #0a2540; }