/* Base & Utilities */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  overflow-x: hidden;
}

/* Smooth reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  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; }

/* Header scroll state */
#site-header.scrolled {
  background: rgba(242, 251, 248, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06);
}

/* Nav link underline animation */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #7ED4C1;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

.mobile-menu-link {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

#mobile-menu.open .mobile-menu-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-menu-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-menu-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-menu-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-menu-link:nth-child(5) { transition-delay: 0.25s; }

/* Image hover container */
.group img {
  will-change: transform;
}

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

::-webkit-scrollbar-track {
  background: #F2FBF8;
}

::-webkit-scrollbar-thumb {
  background: #BCEBD9;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #7ED4C1;
}

/* Selection */
::selection {
  background: #BCEBD9;
  color: #0A1628;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid #7ED4C1;
  outline-offset: 2px;
}

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

/* Tablet */
@media (max-width: 768px) {
  .font-serif {
    font-size: clamp(2rem, 8vw, 3rem);
  }
}

/* Large desktop */
@media (min-width: 1280px) {
  .max-w-7xl {
    max-width: 80rem;
  }
}