/* Base & Utilities */
html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

/* Selection */
::selection {
  background: rgba(168, 230, 207, 0.3);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #050F1E;
}
::-webkit-scrollbar-thumb {
  background: #1A3D6E;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #3AB084;
}

/* Scroll Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  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-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; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Navbar transition */
.navbar-scrolled {
  background: rgba(5, 15, 30, 0.95) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Image hover effects */
img {
  display: block;
  max-width: 100%;
}

/* Form focus styles */
input:focus,
textarea:focus,
select:focus {
  outline: none;
}

/* Custom select arrow */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(168,230,207,0.6)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* Smooth image loading */
img {
  image-rendering: auto;
}

/* Aspect ratio fallbacks */
.h-64 { height: 16rem; }
.h-72 { height: 18rem; }
.h-96 { height: 24rem; }

/* Print styles */
@media print {
  nav, #contact-form, #form-success, .reveal { display: none; }
  body { background: white; color: black; }
}