/* ---------- Intro ---------- */
.gallery-intro {
  padding-block: var(--space-3xl) var(--space-2xl);
  background-color: var(--color-cream);
  text-align: center;
}

.gallery-intro p {
  max-width: 36rem;
  margin: var(--space-md) auto 0;
  font-size: var(--text-base);
}

/* ---------- Filters ---------- */
.gallery-filters ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-2xl);
}

.filter-btn {
  padding: 0.45rem 1rem;
  border: 1px solid var(--color-taupe);
  border-radius: 999px;
  background-color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-navy);
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.filter-btn:hover {
  border-color: var(--color-navy);
}

.filter-btn[aria-pressed="true"] {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}

/* ---------- Grid ---------- */
.gallery-grid {
  display: grid;
  gap: var(--space-lg);
}

.gallery-item[hidden] {
  display: none;
}

.gallery-item figure {
  height: 100%;
  background-color: var(--color-white);
  box-shadow: var(--shadow-card);
}

.gallery-item__button {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  background-color: var(--color-taupe-light);
  cursor: zoom-in;
}

.gallery-item__button img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 400ms ease;
}

.gallery-item__button:hover img,
.gallery-item__button:focus-visible img {
  transform: scale(1.04);
}

.gallery-item__caption {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.gallery-item__tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-taupe-dark);
}

@media (min-width: 40rem) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 64rem) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- Lightbox ---------- */
.lightbox {
  /* reset.css zeroes all margins; dialogs need margin: auto to centre */
  position: fixed;
  inset: 0;
  margin: auto;
  width: fit-content;
  height: fit-content;
  max-width: 92vw;
  max-height: 92vh;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: visible;
}

.lightbox::backdrop {
  background-color: rgba(11, 31, 53, 0.88);
}

.lightbox__figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.lightbox__img {
  /* grows up to the image's own size, never past the screen */
  width: auto;
  height: auto;
  max-width: 92vw;
  max-height: calc(92vh - 4rem);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.lightbox__caption {
  font-size: var(--text-sm);
  color: var(--color-white);
  text-align: center;
}

.lightbox__btn {
  position: fixed;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 0;
  border-radius: 50%;
  background-color: var(--color-white);
  color: var(--color-navy);
  transition: background-color var(--transition), color var(--transition);
}

.lightbox__btn:hover {
  background-color: var(--color-taupe);
  color: var(--color-white);
}

.lightbox__btn[hidden] {
  display: none;
}

.lightbox__btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

.lightbox__btn--close {
  top: var(--space-md);
  right: var(--space-md);
}

.lightbox__btn--prev,
.lightbox__btn--next {
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__btn--prev {
  left: var(--space-sm);
}

.lightbox__btn--next {
  right: var(--space-sm);
}

@media (min-width: 56rem) {
  .lightbox__btn--prev {
    left: var(--space-xl);
  }

  .lightbox__btn--next {
    right: var(--space-xl);
  }
}