/* BookInDZ — Galerie (inspiré ambiance Polarsteps : immersion, révélation au scroll, profondeur) */

.page-gallery {
  --gallery-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --gallery-shadow: 0 24px 80px rgba(12, 18, 15, 0.35);
}

.page-gallery .navbar.navbar--on-hero .logo-book,
.page-gallery .navbar.navbar--on-hero .logo-dz {
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.35);
}

/* ========== HERO IMMERSIF ========== */

.gallery-hero {
  position: relative;
  min-height: min(92vh, 900px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 120px 0 100px;
  overflow: hidden;
  isolation: isolate;
  background: #0f1612;
}

.gallery-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: #0f1612 center / cover no-repeat;
  transform: scale(1.08);
  will-change: transform;
}

.gallery-hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(8, 12, 10, 0.25) 0%,
    rgba(8, 12, 10, 0.55) 45%,
    rgba(8, 12, 10, 0.88) 100%
  );
}

.gallery-hero__grain {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.07;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.gallery-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 920px;
}

.gallery-hero__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 20px;
  opacity: 0;
  animation: gallery-fade-up 1s var(--gallery-ease) 0.15s forwards;
}

.gallery-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  opacity: 0;
  animation: gallery-fade-up 1s var(--gallery-ease) 0.35s forwards;
}

.gallery-hero__title em {
  font-style: italic;
  font-weight: 500;
  color: rgba(184, 212, 200, 0.95);
}

.gallery-hero__lead {
  font-size: 1.15rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
  max-width: 520px;
  margin-bottom: 36px;
  opacity: 0;
  animation: gallery-fade-up 1s var(--gallery-ease) 0.55s forwards;
}

.gallery-hero__cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  opacity: 0;
  animation: gallery-fade-up 1s var(--gallery-ease) 0.75s forwards;
}

.gallery-hero__scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.gallery-hero__scroll-hint i {
  animation: gallery-bounce 2.4s ease-in-out infinite;
}

@keyframes gallery-fade-up {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes gallery-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ========== SECTION GRILLE ========== */

.gallery-section {
  padding: 88px 0 110px;
  background: linear-gradient(180deg, #faf8f5 0%, #f0ebe4 50%, #faf8f5 100%);
  position: relative;
}

.gallery-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(30, 74, 58, 0.12), transparent);
}

.gallery-intro {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 56px;
}

.gallery-intro h2 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  color: var(--primary-green-dark);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.gallery-intro p {
  color: var(--text-body);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Grille type « bento » : tuiles de tailles variées */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(14px, 2vw, 22px);
  align-items: stretch;
}

.gallery-tile {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  background: #e8e4dd;
  box-shadow: var(--shadow-md);
  transform: translateZ(0);
  transition:
    box-shadow 0.55s var(--gallery-ease),
    transform 0.55s var(--gallery-ease);
}

.gallery-tile:hover {
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(30, 74, 58, 0.08);
  z-index: 2;
}

.gallery-tile:focus-visible {
  outline: 3px solid var(--primary-green);
  outline-offset: 4px;
}

.gallery-tile__inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 220px;
  overflow: hidden;
}

.gallery-tile--span-4 { grid-column: span 4; }
.gallery-tile--span-6 { grid-column: span 6; }
.gallery-tile--span-8 { grid-column: span 8; }
.gallery-tile--span-12 { grid-column: span 12; }

.gallery-tile--tall .gallery-tile__inner {
  min-height: 380px;
}

.gallery-tile--hero .gallery-tile__inner {
  min-height: 420px;
}

.gallery-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.001);
  transition: transform 0.85s var(--gallery-ease);
}

.gallery-tile:hover img {
  transform: scale(1.06);
}

.gallery-tile-video {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  display: block;
  transform: scale(1.001);
  transition: transform 0.85s var(--gallery-ease);
}

.gallery-tile--video:hover .gallery-tile-video {
  transform: scale(1.06);
}

.gallery-tile--video .gallery-tile__inner {
  background: #0f1612;
}

.gallery-tile__shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    125deg,
    rgba(255, 255, 255, 0.22) 0%,
    transparent 42%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}

.gallery-tile:hover .gallery-tile__shine {
  opacity: 1;
}

.gallery-tile__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 20px 22px 22px;
  background: linear-gradient(transparent, rgba(12, 18, 15, 0.82));
  transform: translateY(8px);
  opacity: 0.92;
  transition: transform 0.5s var(--gallery-ease), opacity 0.5s ease;
}

.gallery-tile:hover .gallery-tile__caption {
  transform: translateY(0);
  opacity: 1;
}

.gallery-tile__caption span {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
}

.gallery-tile__caption small {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

/* Révélation au scroll */
.gallery-reveal {
  opacity: 0;
  transform: translateY(40px) scale(0.98);
  transition:
    opacity 0.85s var(--gallery-ease),
    transform 0.85s var(--gallery-ease);
}

.gallery-reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

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

.gallery-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(8, 12, 10, 0.88);
  backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s var(--gallery-ease), visibility 0.45s;
}

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

.gallery-lightbox__content {
  position: relative;
  isolation: isolate;
  max-width: min(96vw, 1200px);
  max-height: 90vh;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--gallery-shadow);
  transform: scale(0.94) translateY(16px);
  transition: transform 0.5s var(--gallery-ease);
}

.gallery-lightbox.is-open .gallery-lightbox__content {
  transform: scale(1) translateY(0);
}

.gallery-lightbox__content img {
  display: block;
  max-width: 100%;
  max-height: min(85vh, 900px);
  width: auto;
  height: auto;
  object-fit: contain;
  margin: 0 auto;
}

.gallery-lightbox__video {
  display: block;
  max-width: 100%;
  max-height: min(85vh, 900px);
  width: auto;
  height: auto;
  margin: 0 auto;
  border-radius: var(--radius-md);
  background: #000;
}

.gallery-lightbox__close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary-green-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: transform 0.25s ease, background 0.25s ease;
  box-shadow: var(--shadow-md);
}

.gallery-lightbox__close:hover {
  transform: scale(1.06);
  background: #fff;
}

.gallery-lightbox__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  padding: 20px 24px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
}

.gallery-lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary-green-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: transform 0.25s ease, opacity 0.25s;
  box-shadow: var(--shadow-md);
}

.gallery-lightbox__nav:hover {
  transform: translateY(-50%) scale(1.05);
}

.gallery-lightbox__nav--prev { left: 12px; }
.gallery-lightbox__nav--next { right: 12px; }

@media (max-width: 640px) {
  .gallery-lightbox__nav {
    width: 44px;
    height: 44px;
  }
  .gallery-lightbox__nav--prev { left: 8px; }
  .gallery-lightbox__nav--next { right: 8px; }
}

/* ========== RESPONSIVE GRILLE ========== */

@media (max-width: 1100px) {
  .gallery-tile--span-4,
  .gallery-tile--span-6,
  .gallery-tile--span-8 {
    grid-column: span 6;
  }
}

@media (max-width: 768px) {
  .gallery-hero {
    padding: 100px 0 72px;
    min-height: min(88vh, 760px);
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-tile--span-4,
  .gallery-tile--span-6,
  .gallery-tile--span-8,
  .gallery-tile--span-12 {
    grid-column: span 1;
  }

  .gallery-tile--tall .gallery-tile__inner,
  .gallery-tile--hero .gallery-tile__inner {
    min-height: 280px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .gallery-hero__bg,
  .gallery-tile img,
  .gallery-reveal,
  .gallery-lightbox__content {
    transition: none !important;
    animation: none !important;
  }

  .gallery-hero__eyebrow,
  .gallery-hero__title,
  .gallery-hero__lead,
  .gallery-hero__cta-row {
    opacity: 1;
    animation: none;
    transform: none;
  }

  .gallery-reveal {
    opacity: 1;
    transform: none;
  }

  .gallery-hero__scroll-hint i {
    animation: none;
  }
}