/* Base */
*, *::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;
}

/* Scroll reveal — progressive enhancement via JS; default state is visible */
@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll dot animation */
@keyframes scrollDot {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(48px); }
}
.animate-scroll-dot {
  animation: scrollDot 1.8s ease-in-out infinite;
}

/* Navbar transition */
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

/* Mobile menu */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

/* Mobile menu line animation */
.menu-toggle.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active .menu-line:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active .menu-line:nth-child(3) {
  width: 24px;
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Subtle hover lift on cards */
.service-card {
  position: relative;
}

/* Selection color */
::selection {
  background: #ff6b4a;
  color: white;
}

/* Smooth image loading */
img {
  image-rendering: auto;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #f7f7f8;
}
::-webkit-scrollbar-thumb {
  background: #d9d9dd;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #b8b8c0;
}