/* Base & Reset */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  background-color: #060d14;
}

/* Selection */
::selection {
  background: rgba(45, 212, 191, 0.2);
  color: #f1f5f9;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #0a1628;
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* Nav Links */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, #2dd4bf, #c9a84c);
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}
.nav-link:hover {
  color: #2dd4bf;
}

/* Navbar Scrolled State */
.navbar-scrolled {
  background: rgba(6, 13, 20, 0.9) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(30, 41, 59, 0.5);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Mobile Menu */
.mobile-menu-open #mobile-menu {
  opacity: 1 !important;
  pointer-events: all !important;
}
.mobile-menu-open .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}
.mobile-menu-open .menu-line:nth-child(2) {
  opacity: 0;
}
.mobile-menu-open .menu-line:nth-child(3) {
  width: 20px;
  transform: rotate(-45deg) translate(4px, -4px);
}

/* Hero Animations */
.hero-anim {
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeUp 0.8s ease forwards;
}
.hero-anim:nth-child(1) { animation-delay: 0.1s; }
.hero-anim:nth-child(2) { animation-delay: 0.3s; }
.hero-anim:nth-child(3) { animation-delay: 0.5s; }
.hero-anim:nth-child(4) { animation-delay: 0.7s; }

@keyframes heroFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll Indicator */
@keyframes scrollIndicator {
  0% { top: -16px; opacity: 1; }
  100% { top: 48px; opacity: 0; }
}
.animate-scroll-indicator {
  animation: scrollIndicator 1.5s ease-in-out infinite;
}

/* Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  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; }

/* Service Cards */
.service-card {
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}
.service-card:hover {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* Gallery */
.gallery-item {
  position: relative;
  cursor: pointer;
}
.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(45, 212, 191, 0.1), rgba(201, 168, 76, 0.05));
  opacity: 0;
  transition: opacity 0.4s ease;
  border-radius: inherit;
}
.gallery-item:hover::after {
  opacity: 1;
}

/* Back to Top */
#back-to-top.visible {
  opacity: 1;
  pointer-events: all;
}

/* Select Styling */
select option {
  background: #0d1b2a;
  color: #f1f5f9;
}

/* Focus Visible */
:focus-visible {
  outline: 2px solid #2dd4bf;
  outline-offset: 2px;
}

/* Responsive */
@media (max-width: 768px) {
  .font-display {
    line-height: 1.1;
  }
}