/*
 * gallery.css — Galerij pagina stijlen
 *
 * Requirements: 3.3
 */

/* ============================================================
   Galerij pagina layout
   ============================================================ */
.gallery-page {
  padding: var(--space-2xl) 0;
}

.gallery-page__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.gallery-page__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-sm);
}

.gallery-page__intro {
  color: var(--color-gray);
  margin-bottom: var(--space-2xl);
  max-width: 60ch;
}

.gallery-page__empty {
  color: var(--color-gray);
  font-style: italic;
  text-align: center;
  padding: var(--space-3xl) 0;
}

/* ============================================================
   Galerij grid
   Requirements: 3.3
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.gallery-grid__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--color-black);
  aspect-ratio: 1 / 1;
  cursor: pointer;
}

.gallery-grid__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow), opacity var(--transition-base);
  cursor: pointer;
}

.gallery-grid__item:hover .gallery-grid__img,
.gallery-grid__item:focus-within .gallery-grid__img {
  transform: scale(1.04);
  opacity: 0.85;
}

.gallery-grid__img:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: -3px;
}

.gallery-grid__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xs) var(--space-sm);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: var(--color-white);
  font-size: var(--font-size-sm);
  margin: 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-grid__item:hover .gallery-grid__caption,
.gallery-grid__item:focus-within .gallery-grid__caption {
  opacity: 1;
}

/* ============================================================
   Achtergrond vervagen wanneer lightbox open is
   ============================================================ */
#page-wrap {
  transition: filter 300ms ease-in-out;
}

body.lightbox-open #page-wrap {
  filter: blur(8px) brightness(0.7);
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   Lightbox overlay
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* Donkere achtergrond */
.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.88);
  cursor: pointer;
}

/* Wrapper: afbeelding + pijlen samen, bijschrift eronder */
.lightbox__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  transform: scale(0.93);
  transition: transform 200ms ease;
}

.lightbox.is-open .lightbox__content {
  transform: scale(1);
}

/* Wrapper om alleen de afbeelding + pijlen */
.lightbox__img-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: calc(100vw - 40px);
  max-height: calc(100dvh - 120px);
}

/* Afbeelding */
.lightbox__img {
  display: block;
  max-width: calc(100vw - 40px);
  max-height: calc(100dvh - 120px);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.7);
  user-select: none;
  -webkit-user-select: none;
  pointer-events: none;
}

/* Bijschrift */
.lightbox__caption {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--font-size-sm);
  text-align: center;
  max-width: 60ch;
  margin: 0;
  padding: 0 var(--space-md);
}

/* ── Sluitknop ── */
.lightbox__close {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 1002;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  color: var(--color-white);
  cursor: pointer;
  transition: background-color 150ms ease, transform 150ms ease;
}

.lightbox__close:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.lightbox__close:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 2px;
}

/* ── Navigatiepijlen — overlay op de afbeelding ── */
.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 1001;
  width: 30%;
  min-width: 56px;
  display: flex;
  align-items: center;
  border: none;
  color: var(--color-white);
  cursor: pointer;
  padding: 0;
  opacity: 0;
  transition: opacity 200ms ease;
}

.lightbox__prev {
  left: 0;
  justify-content: flex-start;
  padding-left: var(--space-md);
  background: linear-gradient(to right, rgba(0, 0, 0, 0.45), transparent);
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.lightbox__next {
  right: 0;
  justify-content: flex-end;
  padding-right: var(--space-md);
  background: linear-gradient(to left, rgba(0, 0, 0, 0.45), transparent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Pijlen verschijnen bij hover op de img-wrap */
.lightbox__img-wrap:hover .lightbox__prev,
.lightbox__img-wrap:hover .lightbox__next {
  opacity: 1;
}

.lightbox__prev:hover {
  opacity: 1;
  background: linear-gradient(to right, rgba(0, 0, 0, 0.65), transparent);
}

.lightbox__next:hover {
  opacity: 1;
  background: linear-gradient(to left, rgba(0, 0, 0, 0.65), transparent);
}

.lightbox__prev svg,
.lightbox__next svg {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.8));
  flex-shrink: 0;
}

.lightbox__prev:focus-visible,
.lightbox__next:focus-visible {
  opacity: 1;
  outline: 3px solid var(--color-blue);
  outline-offset: -3px;
}

/* Op touch-schermen: pijlen altijd zichtbaar */
@media (hover: none) {
  .lightbox__prev,
  .lightbox__next {
    opacity: 0.7;
  }
}

/* ============================================================
   Responsieve breakpoints — grid
   ============================================================ */
@media (min-width: 480px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1280px) {
  .gallery-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ============================================================
   Dark Mode Support for Gallery Page
   ============================================================ */
@media (prefers-color-scheme: dark) {
  /* Gallery page */
  .gallery-page__title {
    color: #e5e5e5;
  }

  .gallery-page__intro,
  .gallery-page__empty {
    color: #a0a0a0;
  }

  /* Gallery grid items */
  .gallery-grid__item {
    background-color: #1e1e1e;
  }

  .gallery-grid__caption {
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    color: #e5e5e5;
  }

  /* Lightbox in dark mode */
  .lightbox__backdrop {
    background-color: rgba(0, 0, 0, 0.95);
  }

  .lightbox__caption {
    color: rgba(255, 255, 255, 0.9);
  }

  /* Page wrap blur effect in dark mode */
  body.lightbox-open #page-wrap {
    filter: blur(8px) brightness(0.5);
  }
}