/* Global page & section transitions */
@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.992);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes overlayOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
    visibility: hidden;
  }
}

@keyframes overlayIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

html {
  scroll-behavior: smooth;
}

body {
  animation: pageEnter 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
}

body.page-exit {
  animation: none;
  opacity: 0;
  transform: translateY(-12px) scale(0.995);
  transition: opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

#page-transition-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  pointer-events: none;
  background: radial-gradient(
    ellipse 80% 60% at 50% 50%,
    rgba(0, 229, 204, 0.12),
    rgba(4, 8, 14, 0.97)
  );
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

#page-transition-overlay.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
  animation: overlayIn 0.35s ease forwards;
}

#page-transition-overlay.is-leaving {
  animation: overlayOut 0.4s ease forwards;
}

body.page-from-transition #page-transition-overlay {
  opacity: 1;
  visibility: visible;
  animation: overlayOut 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.reveal-section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-section:nth-child(2) { transition-delay: 0.08s; }
.reveal-section:nth-child(3) { transition-delay: 0.16s; }
.reveal-section:nth-child(4) { transition-delay: 0.24s; }

a,
button,
input,
select,
.topbar-menu a,
.nav-links a {
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease,
    box-shadow 0.25s ease, transform 0.25s ease, opacity 0.25s ease;
}

.card-hover {
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.35s ease, border-color 0.35s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
}

@media (prefers-reduced-motion: reduce) {
  body,
  body.page-exit,
  #page-transition-overlay,
  .reveal-section {
    animation: none !important;
    transition: none !important;
  }
}