.heritage-gallery-section {
  position: relative;
  overflow: hidden;
  background: var(--page-blue-light);
}

.heritage-gallery-section::before {
  content: "1938";
  position: absolute;
  top: 35px;
  right: -25px;
  color: rgba(22, 141, 196, 0.055);
  font-family: var(--font-heading);
  font-size: clamp(8rem, 20vw, 20rem);
  font-weight: 600;
  line-height: 0.8;
  pointer-events: none;
}

.heritage-gallery-section .container {
  position: relative;
  z-index: 2;
}

.heritage-gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: 120px;
  gap: 20px;
}

.heritage-item {
  display: flex;
  grid-column: span 4;
  grid-row: span 3;
  min-width: 0;
  flex-direction: column;
  margin: 0;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 42px rgba(23, 54, 74, 0.09);
}

.heritage-item:first-child {
  grid-column: span 7;
  grid-row: span 5;
}

.heritage-item:nth-child(2) {
  grid-column: span 5;
  grid-row: span 5;
}

.heritage-image {
  position: relative;
  display: block;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  border: 0;
  /*background: #dfe8ec;*/
  cursor: zoom-in;
}

.heritage-image::before {
  content: "";
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  left: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-primary) 0 42%, var(--color-background) 42% 72%, var(--color-accent) 72% 100%);
}

.heritage-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.18), transparent 48%);
  opacity: 0;
  transition: opacity var(--transition);
}

.heritage-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(1) sepia(0.08) contrast(1.03);
  transition: transform 0.7s ease, filter 0.45s ease;
}

.heritage-item:hover .heritage-image img {
  transform: scale(1.045);
  filter: grayscale(0.2) sepia(0.02) contrast(1.02);
}

.heritage-item:hover .heritage-image::after {
  opacity: 1;
}

.heritage-zoom {
  position: absolute;
  z-index: 3;
  right: 20px;
  bottom: 18px;
  display: grid;
  width: 45px;
  height: 45px;
  place-items: center;
  border-radius: 50%;
  color: var(--color-text);
  background: rgba(244, 223, 78, 0.94);
  font-size: 1.7rem;
  line-height: 1;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition);
}

.heritage-item:hover .heritage-zoom, .heritage-image:focus-visible .heritage-zoom {
  opacity: 1;
  transform: translateY(0);
}

.heritage-image:focus-visible {
  outline: 4px solid rgba(22, 141, 196, 0.32);
  outline-offset: -4px;
}

.heritage-item figcaption {
  flex: 0 0 auto;
  min-height: 105px;
  padding: 21px 23px 23px;
  border-top: 1px solid rgba(23, 54, 74, 0.08);
}

.heritage-date {
  display: block;
  margin-bottom: 7px;
  color: var(--color-accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.heritage-item figcaption p {
  color: var(--color-text);
  font-size: 0.95rem;
  line-height: 1.55;
}

.heritage-gallery-note {
  max-width: 760px;
  margin-top: 30px;
  color: var(--color-text-light);
  font-size: 0.86rem;
  line-height: 1.65;
}

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

.heritage-lightbox {
  position: fixed;
  z-index: 2000;
  inset: 0;
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) 80px;
  align-items: center;
  padding: 45px;
  visibility: hidden;
  color: #fff;
  background: rgba(10, 24, 33, 0.94);
  opacity: 0;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.heritage-lightbox.is-open {
  visibility: visible;
  opacity: 1;
}

.heritage-lightbox-content {
  display: grid;
  max-width: 1280px;
  max-height: calc(100vh - 90px);
  justify-self: center;
  place-items: center;
}

.heritage-lightbox-content img {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 155px);
  object-fit: contain;
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.35);
}

.heritage-lightbox-content p {
  max-width: 800px;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.78);
  text-align: center;
  line-height: 1.65;
}

.heritage-lightbox-close, .heritage-lightbox-nav {
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
  transition: background var(--transition), border-color var(--transition);
}

.heritage-lightbox-close:hover, .heritage-lightbox-nav:hover {
  border-color: var(--color-background);
  background: rgba(244, 223, 78, 0.15);
}

.heritage-lightbox-close {
  position: absolute;
  top: 24px;
  right: 28px;
  width: 50px;
  height: 50px;
  font-size: 2rem;
}

.heritage-lightbox-nav {
  width: 56px;
  height: 56px;
  justify-self: center;
  font-size: 1.4rem;
}

@media (max-width: 1100px) {
  .heritage-gallery {
    grid-auto-rows: 105px;
  }
}

@media (max-width: 767px) {
  .heritage-gallery {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    gap: 18px;
  }
}

@media (max-width: 767px) {
  .heritage-item, .heritage-item:first-child, .heritage-item:nth-child(2) {
    grid-column: auto;
    grid-row: auto;
  }
}

@media (max-width: 767px) {
  .heritage-image {
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 767px) {
  .heritage-zoom {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 767px) {
  .heritage-lightbox {
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    padding: 70px 8px 24px;
  }
}

@media (max-width: 767px) {
  .heritage-lightbox-nav {
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 767px) {
  .heritage-lightbox-close {
    top: 14px;
    right: 14px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 767px) {
  .heritage-lightbox-content img {
    max-height: calc(100vh - 190px);
  }
}