*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  overflow-x: hidden;
}

::selection {
  background: rgba(201, 168, 76, 0.3);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #060F24;
}
::-webkit-scrollbar-thumb {
  background: #162A4A;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #C9A84C;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-up {
  animation-name: fadeUp;
  animation-duration: 0.8s;
  animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
  animation-fill-mode: both;
}

/* Scroll reveal - progressive enhancement */
.scroll-reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 0;
    transform: translateY(24px);
  }
  
  .scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Navbar */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
  background: rgba(6, 15, 36, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(201, 168, 76, 0.1), 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #C9A84C;
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile menu */
.mobile-nav-link {
  position: relative;
}

/* Gold shimmer effect on buttons */
button, a {
  -webkit-tap-highlight-color: transparent;
}

/* Image loading */
img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* Focus styles */
a:focus-visible, button:focus-visible {
  outline: 2px solid #C9A84C;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Smooth transitions for all interactive elements */
button, a, input, select, textarea {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

/* Subtle grain overlay for luxury feel */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 128px 128px;
  z-index: 9999;
}