/* ===== BASE & TYPOGRAPHY ===== */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

::selection {
  background: rgba(168, 230, 207, 0.4);
  color: #0A2E5C;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #FAFCFB;
}
::-webkit-scrollbar-thumb {
  background: rgba(10, 46, 92, 0.2);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(10, 46, 92, 0.35);
}

/* ===== ANIMATIONS ===== */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

/* Fade-in on scroll */
.fade-in {
  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);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.fade-in-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.fade-in-stagger.visible > *:nth-child(2) { transition-delay: 0.12s; }
.fade-in-stagger.visible > *:nth-child(3) { transition-delay: 0.19s; }
.fade-in-stagger.visible > *:nth-child(4) { transition-delay: 0.26s; }
.fade-in-stagger.visible > *:nth-child(5) { transition-delay: 0.33s; }
.fade-in-stagger.visible > *:nth-child(6) { transition-delay: 0.40s; }
.fade-in-stagger.visible > *:nth-child(7) { transition-delay: 0.47s; }
.fade-in-stagger.visible > *:nth-child(8) { transition-delay: 0.54s; }

.fade-in-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ===== HEADER SCROLLED STATE ===== */
#site-header.scrolled {
  background: rgba(250, 252, 251, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(10, 46, 92, 0.08);
}

/* ===== MOBILE MENU ===== */
.mobile-link {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s ease;
}

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

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

/* ===== IMAGE HOVER ZOOM ===== */
img {
  display: block;
}

/* ===== FOCUS VISIBLE ===== */
:focus-visible {
  outline: 2px solid #A8E6CF;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== RESPONSIVE TWEAKS ===== */
@media (max-width: 640px) {
  .font-serif {
    line-height: 1.15;
  }
}

/* ===== PRINT ===== */
@media print {
  #site-header, #mobile-menu { display: none; }
  body { color: #000; background: #fff; }
}