:root {
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-fast: 180ms;
  --motion-medium: 440ms;
}

/* Motion is progressive enhancement: content stays visible if JavaScript is unavailable. */
.motion-ready .motion-enter {
  animation: none;
  opacity: 0;
  transform: translateY(10px);
}

.motion-ready .motion-enter.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity var(--motion-medium) var(--motion-ease),
    transform var(--motion-medium) var(--motion-ease);
  transition-delay: var(--motion-delay, 0ms);
}

.nav-name,
.nav-links a,
.back,
.nav-link-sm,
.footer-links a {
  position: relative;
}

.nav-name::after,
.nav-links a::after,
.back::after,
.nav-link-sm::after,
.footer-links a::after {
  position: absolute;
  right: 0;
  bottom: -3px;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  opacity: 0.45;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 240ms var(--motion-ease);
}

.nav-name:hover::after,
.nav-links a:hover::after,
.back:hover::after,
.nav-link-sm:hover::after,
.footer-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.project-card {
  opacity: 1;
  transition:
    transform 420ms var(--motion-ease),
    opacity var(--motion-fast) ease;
}

.project-card:hover {
  opacity: 1;
  transform: translateY(-4px);
}

.card-image {
  transform: translateZ(0);
  transition:
    box-shadow 520ms var(--motion-ease),
    transform 420ms var(--motion-ease);
}

.card-image img {
  transition: transform 560ms var(--motion-ease);
}

.project-card:hover .card-image {
  box-shadow: 0 14px 30px rgba(17, 17, 17, 0.08);
}

.project-card:hover .card-image img {
  transform: scale(1.018);
}

.project-card:active {
  transform: translateY(-1px) scale(0.99);
  transition-duration: 110ms;
}

.tool-tag {
  transition:
    border-color var(--motion-fast) ease,
    color var(--motion-fast) ease,
    transform var(--motion-fast) var(--motion-ease);
}

.tool-tag:hover {
  border-color: #cfcfcf;
  color: var(--ink2);
  transform: translateY(-1px);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .motion-ready .motion-enter,
  .motion-ready .motion-enter.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .project-card,
  .page,
  .card-image,
  .card-image img,
  .tool-tag,
  .nav-name::after,
  .nav-links a::after,
  .back::after,
  .nav-link-sm::after,
  .footer-links a::after {
    animation: none !important;
    transition: none !important;
  }

  .project-card:hover,
  .project-card:active,
  .project-card:hover .card-image img,
  .tool-tag:hover {
    transform: none;
  }
}