/* ================================================================
   GALLERY.CSS — Navigation galerie, grille masonry, lightbox
   Mehmet & Mine
   ================================================================ */

/* ================================================================
   NAVIGATION GALERIE
   ================================================================ */

.gallery-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 2rem;
  background: rgba(10, 9, 8, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 169, 110, 0.1);
  transition: padding var(--t-med);
}

.gallery-back {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(232, 213, 176, 0.6);
  transition: color var(--t-fast), gap var(--t-med);
  min-width: 100px;
}

.gallery-back:hover {
  color: var(--c-gold-light);
  gap: 0.4rem;
}

.gallery-nav-title {
  font-family: var(--f-serif);
  font-size: 1rem;
  font-weight: 400;
  color: var(--c-gold-light);
  letter-spacing: 0.08em;
  text-align: center;
  flex: 1;
  padding: 0 1rem;
}

.gallery-nav-brand {
  font-family: var(--f-serif);
  font-size: 0.85rem;
  font-weight: 300;
  color: rgba(232, 213, 176, 0.4);
  letter-spacing: 0.08em;
  min-width: 100px;
  text-align: right;
}

/* ================================================================
   EN-TÊTE DE GALERIE (hero)
   ================================================================ */

.gallery-header {
  position: relative;
  height: 55vh;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  margin-top: 0;
}

.gallery-header-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: blur(2px);
  transform: scale(1.06);
  transition: filter 0.6s ease;
}

.gallery-header.is-loaded .gallery-header-bg {
  filter: blur(0);
}

.gallery-header-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 9, 8, 0.92) 0%,
    rgba(10, 9, 8, 0.4)  50%,
    rgba(10, 9, 8, 0.15) 100%
  );
}

.gallery-header-content {
  position: relative;
  z-index: 1;
  padding: 3rem 3rem 3.5rem;
  max-width: 800px;
  animation: galleryHeaderIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) both 0.2s;
}

@keyframes galleryHeaderIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.gallery-tag {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 0.75rem;
}

.gallery-title {
  font-family: var(--f-serif);
  font-size: clamp(2.4rem, 7vw, 4.5rem);
  font-weight: 300;
  color: var(--c-white);
  letter-spacing: 0.06em;
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.gallery-desc {
  font-family: var(--f-serif);
  font-size: clamp(0.9rem, 2vw, 1.05rem);
  font-style: italic;
  font-weight: 300;
  color: rgba(250, 247, 242, 0.65);
  letter-spacing: 0.02em;
  line-height: 1.5;
  margin-bottom: 1.2rem;
}

.gallery-meta {
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: rgba(201, 169, 110, 0.7);
}

/* ================================================================
   GRILLE MASONRY
   ================================================================ */

.gallery-main {
  padding: 2.5rem 2rem 4rem;
  background: var(--c-bg);
  max-width: 1600px;
  margin: 0 auto;
}

/* Colonnes flex séparées — chaque colonne est indépendante pour éviter les sauts */
.masonry {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.masonry-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Item masonry */
.masonry-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--c-gray-200);
}

.masonry-item img {
  width: 100%;
  height: auto;
  display: block;
  transform: scale(1);
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.5s ease;
  will-change: transform;
}

/* Skeleton pendant le chargement */
.masonry-item.is-loading img {
  opacity: 0;
}

/* Overlay au survol */
.masonry-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 9, 8, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t-med);
}

.masonry-item-overlay svg {
  opacity: 0;
  transform: scale(0.7);
  transition: opacity var(--t-med), transform var(--t-med);
  color: var(--c-white);
}

.masonry-item:hover .masonry-item-overlay {
  background: rgba(10, 9, 8, 0.35);
}

.masonry-item:hover img {
  transform: scale(1.04);
}

.masonry-item:hover .masonry-item-overlay svg {
  opacity: 1;
  transform: scale(1);
}

/* Message de fin */
.gallery-end-msg {
  text-align: center;
  padding: 3rem 1rem;
  font-family: var(--f-serif);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--c-gray-500);
  letter-spacing: 0.05em;
}

/* ================================================================
   PAGINATION
   ================================================================ */

.gallery-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2.5rem 1rem 0.5rem;
}

.gallery-page-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-anthracite);
  color: var(--c-gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t-fast), color var(--t-fast), opacity var(--t-fast);
  flex-shrink: 0;
}

.gallery-page-btn:hover:not(:disabled) {
  background: var(--c-gold);
  color: var(--c-dark);
}

.gallery-page-btn:disabled {
  opacity: 0.25;
  pointer-events: none;
}

.gallery-page-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--f-serif);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--c-gray-500);
  letter-spacing: 0.05em;
}

.gallery-page-info input {
  width: 3.2rem;
  text-align: center;
  background: transparent;
  border: 1px solid rgba(201, 169, 110, 0.25);
  border-radius: 4px;
  color: var(--c-gold-light);
  font-family: var(--f-serif);
  font-size: 0.9rem;
  padding: 0.2rem 0.3rem;
  outline: none;
  transition: border-color var(--t-fast);
}

.gallery-page-info input:focus {
  border-color: var(--c-gold);
}

/* ================================================================
   BOUTON RETOUR EN HAUT
   ================================================================ */

.back-top {
  position: fixed;
  bottom: 2.5rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--c-anthracite);
  color: var(--c-gold-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--t-med), transform var(--t-med), background var(--t-fast);
  pointer-events: none;
  z-index: 50;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.back-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-top:hover {
  background: var(--c-gold);
  color: var(--c-dark);
}

/* ================================================================
   TRANSITION D'ENTRÉE VUE GALERIE
   ================================================================ */

#view-gallery.view--entering {
  animation: galleryEnter 0.75s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes galleryEnter {
  from { opacity: 0; transform: scale(0.985); }
  to   { opacity: 1; transform: scale(1); }
}

/* ================================================================
   LIGHTBOX
   ================================================================ */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-lightbox);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox[hidden] { display: none; }

/* Ouverture/fermeture */
.lightbox.is-opening  { animation: lbFadeIn  0.3s ease forwards; }
.lightbox.is-closing  { animation: lbFadeOut 0.25s ease forwards; }

@keyframes lbFadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes lbFadeOut { from { opacity: 1; } to { opacity: 0; } }

/* Fond */
.lb-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 5, 4, 0.96);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* Stage central */
.lb-stage {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 70px 80px;
}

/* Bouton fermer */
.lb-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--t-fast), transform var(--t-fast);
  z-index: 2;
}

.lb-close:hover {
  color: var(--c-white);
  transform: rotate(90deg);
}

/* Boutons navigation */
.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--t-fast), transform var(--t-fast);
  z-index: 2;
}

.lb-nav--prev { left: 1.5rem; }
.lb-nav--next { right: 1.5rem; }

.lb-nav:hover { color: var(--c-white); }

.lb-nav--prev:hover { transform: translateY(-50%) translateX(-3px); }
.lb-nav--next:hover { transform: translateY(-50%) translateX(3px); }

.lb-nav:disabled,
.lb-nav[aria-disabled="true"] {
  opacity: 0.2;
  pointer-events: none;
}

/* Contenant de l'image */
.lb-img-wrap {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Image */
.lb-img {
  max-width: 100%;
  max-height: calc(100vh - 140px);
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.4s ease;
  user-select: none;
  -webkit-user-drag: none;
  border-radius: var(--r-sm);
}

.lb-img.is-loaded {
  opacity: 1;
}

/* Animation de changement de photo */
.lb-img.is-transitioning {
  animation: lbImgSwitch 0.35s ease;
}

@keyframes lbImgSwitch {
  0%   { opacity: 1; }
  40%  { opacity: 0; transform: scale(0.97); }
  60%  { opacity: 0; transform: scale(0.97); }
  100% { opacity: 1; transform: scale(1); }
}

/* Loader spinner */
.lb-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lb-loader::after {
  content: '';
  width: 28px;
  height: 28px;
  border: 1.5px solid rgba(201, 169, 110, 0.25);
  border-top-color: var(--c-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.lb-loader.is-hidden { display: none; }

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

/* Compteur */
.lb-counter {
  position: absolute;
  bottom: 1.4rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.35);
  white-space: nowrap;
}

/* ================================================================
   RESPONSIVE GALERIE
   ================================================================ */

@media (max-width: 900px) {
  .gallery-header-content {
    padding: 2rem 1.75rem 2.5rem;
  }

  .gallery-main {
    padding: 1.5rem 1.25rem 3rem;
  }
}

@media (max-width: 600px) {
  .gallery-nav {
    padding: 1rem 1.25rem;
  }

  .gallery-nav-brand {
    display: none;
  }

  .gallery-header {
    height: 45vh;
    min-height: 280px;
  }

  .gallery-header-content {
    padding: 1.5rem 1.25rem 2rem;
  }

  .masonry,
  .masonry-col {
    gap: 6px;
  }

  .gallery-main {
    padding: 1rem 0.75rem 3rem;
  }

  .back-top {
    bottom: 1.5rem;
    right: 1rem;
    width: 40px;
    height: 40px;
  }
}

/* ================================================================
   RESPONSIVE LIGHTBOX
   ================================================================ */

@media (max-width: 600px) {
  .lb-stage {
    padding: 60px 14px 50px;
  }

  .lb-nav--prev { left: 0.25rem; }
  .lb-nav--next { right: 0.25rem; }

  .lb-img {
    max-height: calc(100vh - 110px);
    border-radius: 0;
  }

  .lb-close {
    top: 0.9rem;
    right: 0.9rem;
  }
}