/* Small finishing details shared by both color themes. */
.site-header nav a,
.underlined {
  position: relative;
}

.site-header nav a::after,
.underlined::after {
  content: '';
  position: absolute;
  inset: auto 0 -7px;
  height: 1px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 300ms cubic-bezier(.22, 1, .36, 1);
  pointer-events: none;
}

.underlined {
  border-bottom-color: var(--line);
}

.underlined::after {
  bottom: -1px;
}

.site-header nav a:is(:hover, :focus-visible, [aria-current])::after,
.underlined:is(:hover, :focus-visible)::after {
  transform: scaleX(1);
  transform-origin: left;
}

.portrait::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px var(--line);
  transition: box-shadow 300ms ease;
  pointer-events: none;
}

.portrait:is(:hover, :focus-visible)::before {
  box-shadow: inset 0 0 0 2px var(--blue);
}

.portrait:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 6px;
}

.portrait:focus-visible img {
  filter: saturate(1);
}

footer {
  position: relative;
  isolation: isolate;
  padding-bottom: clamp(150px, 24vw, 345px);
}

footer::after {
  content: 'CPI';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  color: var(--blue);
  opacity: .075;
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(150px, 27vw, 405px);
  line-height: .76;
  letter-spacing: -.065em;
  text-align: center;
  pointer-events: none;
  user-select: none;
}

@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 180ms;
  animation-timing-function: ease-out;
}

@media (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: none;
  }

  .site-header nav a::after,
  .underlined::after,
  .portrait::before {
    transition: none;
  }

  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
  }
}