:root {
  --midnight: #0A1628;
  --midnight-light: #111F38;
  --mint: #5EEAD4;
  --mint-dark: #3DD9C4;
  --mint-light: #99F6E8;
  --slate-50: #F8FAFC;
  --white: #FFFFFF;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Inter', sans-serif;
  color: #1a1a2e;
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.font-playfair {
  font-family: 'Playfair Display', serif;
}

.font-inter {
  font-family: 'Inter', sans-serif;
}

/* Loader */
#loader {
  pointer-events: none;
}

#loader.fade-out {
  opacity: 0;
}

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

#navbar.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--mint);
  transition: width 0.3s ease;
}

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

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

/* Floating Cards */
.floating-card {
  animation: float 6s ease-in-out infinite;
}

.card-1 {
  animation-delay: 0s;
}

.card-2 {
  animation-delay: -2s;
}

.card-3 {
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* Service Cards */
.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--mint), var(--mint-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

/* Gallery */
.gallery-item {
  height: 300px;
  cursor: pointer;
}

.gallery-item img {
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Scroll Reveal */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
.scroll-reveal:nth-child(3) { transition-delay: 0.2s; }
.scroll-reveal:nth-child(4) { transition-delay: 0.3s; }
.scroll-reveal:nth-child(5) { transition-delay: 0.4s; }
.scroll-reveal:nth-child(6) { transition-delay: 0.5s; }

/* Testimonial Cards */
.testimonial-card {
  position: relative;
}

.testimonial-card::after {
  content: '"';
  position: absolute;
  top: 20px;
  right: 24px;
  font-family: 'Playfair Display', serif;
  font-size: 6rem;
  color: var(--mint);
  opacity: 0.08;
  line-height: 1;
}

/* Back to Top */
#backToTop {
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

#backToTop.visible {
  opacity: 1;
  transform: translateY(0);
}

#backToTop:hover {
  background: var(--white);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

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

::-webkit-scrollbar-track {
  background: var(--midnight);
}

::-webkit-scrollbar-thumb {
  background: var(--mint);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--mint-light);
}

/* Selection */
::selection {
  background: var(--mint);
  color: var(--midnight);
}

/* Responsive */
@media (max-width: 768px) {
  .floating-card {
    display: none;
  }

  .gallery-item {
    height: 200px;
  }
}

@media (max-width: 640px) {
  #hero h1 {
    font-size: 2.75rem;
  }

  .service-card {
    padding: 1.5rem;
  }
}