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

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

body {
  overflow-x: hidden;
}

/* Hero animations */
.hero-title {
  animation: slideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
  transform: translateY(40px);
}

.hero-subtitle {
  animation: slideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards;
  opacity: 0;
  transform: translateY(40px);
}

.hero-desc {
  animation: slideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
  opacity: 0;
  transform: translateY(40px);
}

.hero-stat {
  animation: slideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.45s forwards;
  opacity: 0;
  transform: translateY(40px);
}

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

/* Scroll-triggered animations */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.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 card hover */
.service-card {
  transform: translateY(0);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s ease;
}

.service-card:hover {
  transform: translateY(-8px);
}

/* Why card hover */
.why-card {
  transform: translateY(0);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.why-card:hover {
  transform: translateY(-6px);
}

/* Navbar transition */
.nav-scrolled {
  background: rgba(26, 26, 26, 0.95) !important;
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-scrolled .nav-link,
.nav-scrolled #nav-logo-text,
.nav-scrolled #nav-logo-sub {
  color: #fff !important;
}

/* Mobile menu */
.mobile-link {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
  opacity: 1;
  transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }

/* Hamburger animation */
#menu-btn.active #bar1 {
  transform: rotate(45deg) translate(4px, 4px);
}

#menu-btn.active #bar2 {
  opacity: 0;
}

#menu-btn.active #bar3 {
  transform: rotate(-45deg) translate(4px, -4px);
  width: 1.5rem;
}

/* Custom selection */
::selection {
  background: #E8645A;
  color: white;
}

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

::-webkit-scrollbar-track {
  background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
  background: #4a4a4a;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #E8645A;
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #E8645A;
  outline-offset: 2px;
}

/* Smooth image loading */
img {
  opacity: 1;
  transition: opacity 0.3s ease;
}

img[data-src] {
  opacity: 0;
}