/* Base styles and custom utilities */

html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

/* Scroll reveal animations — progressive enhancement via JS */
.scroll-reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 0;
    transform: translateY(24px);
  }
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Navbar background on scroll */
#navbar.scrolled {
  background: rgba(10, 31, 53, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #0a1f35;
}

::-webkit-scrollbar-thumb {
  background: #c8a45a;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #d4b46a;
}

/* Selection color */
::selection {
  background: #c8a45a;
  color: #0a1f35;
}

/* Mobile menu transition */
#mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

#mobile-menu.open {
  max-height: 400px;
}

/* Image loading placeholder */
img {
  background-color: #0f2a4a;
}