/* Gallery Premium 2027 · Entrega 1
   Estructura visual y responsive. La navegación programada llega en Entrega 2. */

.gallery-2027,
.gallery-2027 *,
.gallery-viewer,
.gallery-viewer * {
  box-sizing: border-box;
}

.gallery-2027 button,
.gallery-2027 img,
.gallery-viewer button,
.gallery-viewer img {
  display: block;
}

.gallery-2027 button,
.gallery-viewer button {
  font: inherit;
}

.gallery-2027 {
  padding-block: clamp(4rem, 8vw, 7rem);
  overflow: hidden;
}

.gallery-2027 {
  width: min(100%, var(--gallery-2027-max-width));
  margin-inline: auto;
}

.gallery-2027__header {
  width: min(48rem, calc(100% - 2rem));
  margin: 0 auto clamp(2rem, 5vw, 4rem);
  text-align: center;
}

.gallery-2027__eyebrow {
  margin: 0 0 0.8rem;
  color: var(--gallery-2027-olive-700);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
}

.gallery-2027__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 5.3rem);
  font-weight: 500;
  line-height: 0.98;
  text-wrap: balance;
}

.gallery-2027__intro {
  max-width: 38rem;
  margin: 1.2rem auto 0;
  color: var(--gallery-2027-muted);
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  line-height: 1.8;
}

.gallery-2027__stage {
  position: relative;
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) 4rem;
  align-items: center;
  gap: clamp(0.5rem, 1.5vw, 1.2rem);
}

.gallery-2027__viewport {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-inline: contain;
  scrollbar-width: none;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: clamp(1rem, 8vw, 8rem);
  outline: none;
}
.gallery-2027__viewport::-webkit-scrollbar { display: none; }
.gallery-2027__viewport:focus-visible {
  border-radius: var(--gallery-2027-radius);
  box-shadow: 0 0 0 0.22rem rgba(89, 98, 74, 0.26);
}

.gallery-2027__track {
  display: flex;
  gap: var(--gallery-2027-gap);
  width: max-content;
  padding: clamp(1rem, 2vw, 1.8rem) clamp(1rem, 8vw, 8rem);
}

.gallery-2027__slide {
  flex: 0 0 clamp(16rem, 56vw, 48rem);
  scroll-snap-align: center;
}

.gallery-2027__card {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(197, 200, 195, 0.68);
  border-radius: var(--gallery-2027-radius);
  background: var(--gallery-2027-silver);
  box-shadow: var(--gallery-2027-shadow);
}

.gallery-2027__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.gallery-2027__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: clamp(1rem, 2vw, 1.6rem);
  background: linear-gradient(180deg, transparent 58%, rgba(17, 20, 15, 0.42));
  pointer-events: none;
}

.gallery-2027__number {
  min-width: 2.7rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  color: white;
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-align: center;
  backdrop-filter: blur(0.7rem);
}

.gallery-2027__arrow {
  width: 3.7rem;
  height: 3.7rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(89, 98, 74, 0.2);
  border-radius: 50%;
  background: rgba(255, 253, 248, 0.76);
  color: var(--gallery-2027-olive-900);
  font-size: 1.25rem;
  box-shadow: 0 0.8rem 2rem rgba(32, 35, 29, 0.1);
  backdrop-filter: blur(0.8rem);
}

.gallery-2027__arrow:disabled { opacity: 0.55; }

.gallery-2027__footer {
  width: min(44rem, calc(100% - 2rem));
  margin: clamp(1.5rem, 3vw, 2.5rem) auto 0;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.8rem 1.2rem;
}

.gallery-2027__counter {
  margin: 0;
  color: var(--gallery-2027-olive-700);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.gallery-2027__progress {
  height: 1px;
  overflow: hidden;
  background: rgba(89, 98, 74, 0.2);
}

.gallery-2027__progress-bar {
  display: block;
  width: calc(100% / 22);
  height: 100%;
  background: var(--gallery-2027-olive-700);
}

.gallery-2027__phase-note {
  grid-column: 1 / -1;
  margin: 0.3rem 0 0;
  color: var(--gallery-2027-muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
}

/* Tablet */
@media (max-width: 64rem) {
  .gallery-2027__stage { grid-template-columns: 3.4rem minmax(0, 1fr) 3.4rem; }
  .gallery-2027__arrow { width: 3.2rem; height: 3.2rem; }
  .gallery-2027__slide { flex-basis: min(72vw, 40rem); }
}

/* Mobile */
@media (max-width: 48rem) {
  .demo-page { align-items: start; padding-block: 3.5rem; }
  .gallery-2027__header { margin-bottom: 1.6rem; }
  .gallery-2027__stage { display: block; }
  .gallery-2027__arrow { display: none; }
  .gallery-2027__track { padding-inline: 1rem; }
  .gallery-2027__slide { flex-basis: calc(100vw - 2.8rem); }
  .gallery-2027__card { aspect-ratio: 4 / 5; border-radius: 1.2rem; }
  .gallery-2027__footer { grid-template-columns: auto 1fr; }
}

@media (max-width: 30rem) {
  .gallery-2027__title { font-size: 2.55rem; }
  .gallery-2027__slide { flex-basis: calc(100vw - 2rem); }
  .gallery-2027__track { padding-inline: 0.65rem; }
}

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

/* Entrega 2 · comportamiento visual del carrusel */
.gallery-2027__viewport {
  scroll-behavior: smooth;
  cursor: grab;
}

.gallery-2027__viewport:active { cursor: grabbing; }

.gallery-2027__slide {
  opacity: 0.56;
  transform: scale(0.92);
  transform-origin: center;
  transition:
    opacity 380ms ease,
    transform 480ms cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-2027__slide.is-active {
  opacity: 1;
  transform: scale(1);
}

.gallery-2027__arrow {
  cursor: pointer;
  transition:
    transform 180ms ease,
    opacity 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease;
}

.gallery-2027__arrow:not(:disabled):hover {
  transform: translateY(-0.15rem) scale(1.04);
  background: rgba(255, 253, 248, 0.96);
  box-shadow: 0 1rem 2.4rem rgba(32, 35, 29, 0.16);
}

.gallery-2027__arrow:not(:disabled):active {
  transform: scale(0.96);
}

.gallery-2027__arrow:focus-visible {
  outline: 0.2rem solid rgba(89, 98, 74, 0.34);
  outline-offset: 0.2rem;
}

.gallery-2027__arrow:disabled {
  cursor: not-allowed;
  opacity: 0.25;
  box-shadow: none;
}

.gallery-2027__progress-bar {
  width: calc(100% / 22);
  transition: width 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

@media (hover: hover) {
  .gallery-2027__slide.is-active .gallery-2027__card:hover .gallery-2027__image {
    transform: scale(1.025);
  }
}

.gallery-2027__image {
  transition: transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

@media (max-width: 48rem) {
  .gallery-2027__slide {
    opacity: 0.72;
    transform: scale(0.965);
  }

  .gallery-2027__slide.is-active {
    opacity: 1;
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .gallery-2027__viewport { scroll-behavior: auto; }
  .gallery-2027__slide,
  .gallery-2027__arrow,
  .gallery-2027__progress-bar,
  .gallery-2027__image {
    transition: none;
  }
}

/* Entrega 3 · Swipe y drag */
.gallery-2027__viewport {
  touch-action: pan-y pinch-zoom;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

.gallery-2027__viewport.is-pointer-down {
  cursor: grabbing;
}

.gallery-2027__viewport.is-dragging {
  scroll-behavior: auto;
  scroll-snap-type: none;
}

.gallery-2027__viewport.is-dragging .gallery-2027__slide {
  transition: none;
}

.gallery-2027__image {
  pointer-events: none;
  -webkit-user-drag: none;
}

@media (max-width: 48rem) {
  .gallery-2027__viewport {
    cursor: default;
  }
}

/* ==========================================================
   Entrega 4 · Visor accesible de fotografías
========================================================== */
.gallery-2027__card:not(:disabled) {
  cursor: zoom-in;
}

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

.gallery-viewer {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  padding: clamp(0.75rem, 2.5vw, 2rem);
  opacity: 0;
  visibility: hidden;
  transition: opacity 240ms ease, visibility 240ms ease;
}

.gallery-viewer.is-open {
  opacity: 1;
  visibility: visible;
}

.gallery-viewer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 10, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.gallery-viewer__dialog {
  position: relative;
  z-index: 1;
  width: min(96vw, 88rem);
  height: min(92vh, 62rem);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(0.35rem, 1.5vw, 1.25rem);
  outline: none;
  transform: scale(0.975);
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-viewer.is-open .gallery-viewer__dialog {
  transform: scale(1);
}

.gallery-viewer__figure {
  position: relative;
  min-width: 0;
  height: 100%;
  margin: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  place-items: center;
}

.gallery-viewer__image {
  grid-row: 1;
  max-width: 100%;
  max-height: calc(92vh - 4rem);
  object-fit: contain;
  user-select: none;
  opacity: 0;
  transform: scale(0.985);
  transition: opacity 220ms ease, transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
  filter: drop-shadow(0 1.25rem 3rem rgba(0, 0, 0, 0.35));
}

.gallery-viewer__image.is-loaded {
  opacity: 1;
  transform: scale(1);
}

.gallery-viewer__caption {
  grid-row: 2;
  padding-top: 0.8rem;
  color: rgba(255, 255, 255, 0.82);
  font: 500 0.8rem/1.2 var(--font-body);
  letter-spacing: 0.16em;
}

.gallery-viewer__close,
.gallery-viewer__arrow {
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 180ms ease, transform 180ms ease, opacity 180ms ease;
}

.gallery-viewer__close:hover,
.gallery-viewer__arrow:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: scale(1.05);
}

.gallery-viewer__close:focus-visible,
.gallery-viewer__arrow:focus-visible {
  outline: 0.2rem solid #fff;
  outline-offset: 0.2rem;
}

.gallery-viewer__close {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 2;
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  font-size: 2rem;
  line-height: 1;
}

.gallery-viewer__arrow {
  width: clamp(2.75rem, 5vw, 4rem);
  height: clamp(2.75rem, 5vw, 4rem);
  border-radius: 999px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
}

.gallery-viewer__arrow:disabled {
  opacity: 0.3;
  cursor: default;
}

.gallery-viewer__loading {
  grid-row: 1;
  width: 2.5rem;
  height: 2.5rem;
  border: 0.2rem solid rgba(255, 255, 255, 0.22);
  border-top-color: #fff;
  border-radius: 50%;
  opacity: 0;
  animation: gallery-viewer-spin 800ms linear infinite;
}

.gallery-viewer__loading.is-visible {
  opacity: 1;
}

.gallery-viewer__sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

body.gallery-viewer-open {
  overflow: hidden;
}

@keyframes gallery-viewer-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 48rem) {
  .gallery-viewer {
    padding: 0.65rem;
  }

  .gallery-viewer__dialog {
    width: 100%;
    height: 100%;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: minmax(0, 1fr) auto;
    gap: 0.75rem;
  }

  .gallery-viewer__figure {
    grid-column: 1 / -1;
    grid-row: 1;
    height: 100%;
  }

  .gallery-viewer__image {
    max-height: calc(100vh - 6.5rem);
  }

  .gallery-viewer__arrow {
    grid-row: 2;
    justify-self: center;
  }

  .gallery-viewer__close {
    top: 0.25rem;
    right: 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .gallery-viewer,
  .gallery-viewer__dialog,
  .gallery-viewer__image,
  .gallery-viewer__close,
  .gallery-viewer__arrow {
    transition: none;
  }
}



/* ==========================================================
   Entrega 5 · Lightbox Premium Visual
   Sobrescribe únicamente la presentación del visor.
========================================================== */

.gallery-viewer {
  --viewer-control-size: clamp(2.75rem, 4vw, 3.5rem);
  --viewer-edge: clamp(0.85rem, 2vw, 1.6rem);
  --viewer-olive: #7b8469;
  --viewer-ivory: #f7f3ea;
  --viewer-silver: #c5c8c3;
  padding: var(--viewer-edge);
  background: transparent;
}

.gallery-viewer__backdrop {
  background:
    radial-gradient(circle at 50% 42%, rgba(123, 132, 105, 0.16), transparent 42rem),
    linear-gradient(135deg, rgba(16, 19, 15, 0.96), rgba(29, 32, 27, 0.98));
  backdrop-filter: blur(22px) saturate(0.88);
  -webkit-backdrop-filter: blur(22px) saturate(0.88);
}

.gallery-viewer__dialog {
  width: min(96vw, 100rem);
  height: min(94vh, 68rem);
  grid-template-columns: var(--viewer-control-size) minmax(0, 1fr) var(--viewer-control-size);
  gap: clamp(0.6rem, 1.25vw, 1rem);
}

.gallery-viewer__figure {
  isolation: isolate;
  overflow: hidden;
  grid-template-rows: minmax(0, 1fr);
  border: 1px solid rgba(247, 243, 234, 0.12);
  border-radius: clamp(0.8rem, 1.5vw, 1.35rem);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.012));
  box-shadow:
    0 2rem 6rem rgba(0, 0, 0, 0.46),
    inset 0 1px rgba(255, 255, 255, 0.06);
}

.gallery-viewer__image {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
  background: rgba(0, 0, 0, 0.12);
  filter: none;
  transform: scale(0.992);
  transition:
    opacity 220ms ease,
    transform 500ms cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-viewer__image.is-loaded {
  transform: scale(1);
}

.gallery-viewer__caption {
  position: absolute;
  top: clamp(0.9rem, 2vw, 1.4rem);
  left: clamp(0.9rem, 2vw, 1.4rem);
  z-index: 3;
  min-width: 5.5rem;
  padding: 0.68rem 0.9rem;
  border: 1px solid rgba(247, 243, 234, 0.16);
  border-radius: 999px;
  background: rgba(19, 22, 18, 0.52);
  color: rgba(247, 243, 234, 0.92);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 0.7rem 1.8rem rgba(0, 0, 0, 0.18);
}

.gallery-viewer__close,
.gallery-viewer__arrow {
  display: grid;
  place-items: center;
  width: var(--viewer-control-size);
  height: var(--viewer-control-size);
  border-color: rgba(247, 243, 234, 0.18);
  background: rgba(247, 243, 234, 0.08);
  color: var(--viewer-ivory);
  box-shadow:
    0 0.8rem 2rem rgba(0, 0, 0, 0.18),
    inset 0 1px rgba(255, 255, 255, 0.06);
  opacity: 0.72;
}

.gallery-viewer__arrow {
  align-self: center;
  font-size: clamp(1.6rem, 3vw, 2.25rem);
}

.gallery-viewer__close {
  top: 0;
  right: 0;
  font-size: 1.7rem;
}

.gallery-viewer__close:hover,
.gallery-viewer__arrow:not(:disabled):hover {
  border-color: rgba(247, 243, 234, 0.34);
  background: rgba(247, 243, 234, 0.15);
  opacity: 1;
  transform: translateY(-1px) scale(1.035);
}

.gallery-viewer__arrow:not(:disabled):active,
.gallery-viewer__close:active {
  transform: scale(0.96);
}

.gallery-viewer__loading {
  position: absolute;
  z-index: 4;
  border-color: rgba(247, 243, 234, 0.2);
  border-top-color: var(--viewer-ivory);
}

.gallery-viewer__close,
.gallery-viewer__arrow,
.gallery-viewer__caption {
  transition:
    opacity 240ms ease,
    transform 240ms ease,
    background-color 240ms ease,
    border-color 240ms ease;
}

/* Controles sutiles: visibles al abrir, mover el puntero o usar teclado. */
@media (hover: hover) and (pointer: fine) {
  .gallery-viewer.is-open:not(.is-interacting) .gallery-viewer__close,
  .gallery-viewer.is-open:not(.is-interacting) .gallery-viewer__arrow,
  .gallery-viewer.is-open:not(.is-interacting) .gallery-viewer__caption {
    opacity: 0.22;
  }

  .gallery-viewer.is-open:not(.is-interacting) .gallery-viewer__dialog {
    cursor: none;
  }
}

/* Tablet */
@media (max-width: 64rem) {
  .gallery-viewer__dialog {
    width: 100%;
    height: min(92vh, 58rem);
  }
}

/* Móvil */
@media (max-width: 48rem) {
  .gallery-viewer {
    --viewer-edge: 0.55rem;
    --viewer-control-size: 3rem;
  }

  .gallery-viewer__dialog {
    width: 100%;
    height: 100%;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: minmax(0, 1fr) auto;
    gap: 0.65rem;
  }

  .gallery-viewer__figure {
    grid-column: 1 / -1;
    grid-row: 1;
    border-radius: 0.9rem;
  }

  .gallery-viewer__image {
    max-height: none;
  }

  .gallery-viewer__arrow {
    grid-row: 2;
    justify-self: center;
  }

  .gallery-viewer__close {
    top: 0.65rem;
    right: 0.65rem;
  }

  .gallery-viewer__caption {
    top: 0.75rem;
    left: 0.75rem;
  }
}

@media (max-width: 30rem) {
  .gallery-viewer__caption {
    padding: 0.58rem 0.72rem;
    font-size: 0.66rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .gallery-viewer__image,
  .gallery-viewer__close,
  .gallery-viewer__arrow,
  .gallery-viewer__caption {
    transition: none;
  }
}