.portfolio-gallery__link {
  display: block;
  height: 100%;
  overflow: hidden;
  border-radius: .25rem;
  background: #f1f1f1;
  box-shadow: 0 .125rem .4rem rgba(0, 0, 0, .18);
}

.portfolio-gallery__thumbnail {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform .2s ease, opacity .2s ease;
}

.portfolio-gallery__link:hover .portfolio-gallery__thumbnail,
.portfolio-gallery__link:focus .portfolio-gallery__thumbnail {
  transform: scale(1.025);
  opacity: .92;
}

.portfolio-gallery__link:focus-visible {
  outline: 3px solid #0069d9;
  outline-offset: 3px;
}

.portfolio-lightbox {
  width: 100vw;
  max-width: none;
  height: 100vh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(8, 8, 8, .96);
  color: #fff;
}

/* Author styles override Chrome's built-in dialog display rule, so hide the
   lightbox explicitly whenever the open attribute has been removed. */
.portfolio-lightbox:not([open]) {
  display: none;
}

.portfolio-lightbox::backdrop {
  background: rgba(0, 0, 0, .85);
}

.portfolio-lightbox__toolbar {
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  min-height: 58px;
  padding: .5rem .75rem .5rem 1rem;
  background: linear-gradient(rgba(0, 0, 0, .7), transparent);
}

.portfolio-lightbox__caption {
  flex: 1;
  margin: 0;
  padding-right: .75rem;
  font-size: .95rem;
}

.portfolio-lightbox__stage {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 64px 64px 24px;
}

.portfolio-lightbox__image {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.portfolio-lightbox__button {
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, .55);
  color: #fff;
  font-size: 2rem;
  line-height: 48px;
  cursor: pointer;
}

.portfolio-lightbox__button:hover,
.portfolio-lightbox__button:focus-visible {
  background: rgba(255, 255, 255, .2);
  outline: 2px solid #fff;
}

.portfolio-lightbox__close {
  flex: 0 0 auto;
}

.portfolio-lightbox__previous,
.portfolio-lightbox__next {
  position: absolute;
  z-index: 2;
  top: 50%;
  transform: translateY(-50%);
}

.portfolio-lightbox__previous { left: .5rem; }
.portfolio-lightbox__next { right: .5rem; }

body.portfolio-lightbox-open {
  overflow: hidden;
}

@media (max-width: 575.98px) {
  .portfolio-gallery__thumbnail {
    height: auto;
    max-height: 70vh;
    object-fit: contain;
  }

  .portfolio-lightbox__stage {
    padding: 64px 8px 72px;
  }

  .portfolio-lightbox__previous,
  .portfolio-lightbox__next {
    top: auto;
    bottom: 10px;
    transform: none;
  }

  .portfolio-lightbox__previous { left: calc(50% - 58px); }
  .portfolio-lightbox__next { right: calc(50% - 58px); }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-gallery__thumbnail { transition: none; }
}