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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  overflow-x: hidden;
}

/* Navbar scroll state */
#navbar.scrolled {
  background: rgba(6, 15, 29, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

#navbar.scrolled .menu-line {
  background: #fff;
}

/* Nav link hover underline */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: #c9a84c;
  transition: width 0.3s ease;
}

.nav-link {
  position: relative;
}

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

/* Mobile menu */
#mobile-menu.open {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-link {
  position: relative;
}

/* Hamburger animation */
#mobile-toggle.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

#mobile-toggle.active .menu-line:nth-child(2) {
  opacity: 0;
}

#mobile-toggle.active .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
  width: 1.25rem;
}

/* Scroll reveal */
.reveal-up, .reveal-left, .reveal-right {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left {
  transform: translateX(-30px);
}

.reveal-right {
  transform: translateX(30px);
}

.reveal-up.visible,
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* Scroll line animation */
@keyframes scrollLine {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

.animate-scroll-line {
  animation: scrollLine 2s ease-in-out infinite;
}

/* Floating particles */
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.5; }
  50% { transform: translateY(-20px) scale(1.2); opacity: 0.8; }
}

@keyframes float-delay {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0.4; }
  50% { transform: translateY(-15px) translateX(10px); opacity: 0.7; }
}

@keyframes float-delay-2 {
  0%, 100% { transform: translateY(0); opacity: 0.3; }
  50% { transform: translateY(-25px); opacity: 0.6; }
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

.animate-float-delay {
  animation: float-delay 5s ease-in-out infinite 1s;
}

.animate-float-delay-2 {
  animation: float-delay-2 6s ease-in-out infinite 2s;
}

/* Gold shimmer on hover for buttons */
.bg-gold::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.bg-gold:hover::after {
  left: 100%;
}

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

::-webkit-scrollbar-track {
  background: #060f1d;
}

::-webkit-scrollbar-thumb {
  background: rgba(201, 168, 76, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(201, 168, 76, 0.5);
}

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

/* Image aspect ratio fallbacks */
img {
  max-width: 100%;
  height: auto;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal-up, .reveal-left, .reveal-right {
    opacity: 1;
    transform: none;
  }
}