/* Portfolio — grille 3×3 uniforme */

.portfolio {
  width: min(100%, 1200px);
  margin-inline: auto;
  padding: clamp(56px, 9vw, 96px) clamp(24px, 5vw, 56px) clamp(64px, 10vw, 104px);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.portfolio-grid article {
  aspect-ratio: 4 / 3;
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
  cursor: pointer;
  transition:
    transform 300ms ease,
    box-shadow 300ms ease;
}

.portfolio-grid article img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Photo ajoutée telle quelle — pas de crop ni déformation */
.portfolio-grid article.portfolio-card--natural {
  aspect-ratio: auto;
}

.portfolio-grid article.portfolio-card--natural img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

@media (hover: hover) and (pointer: fine) {
  .portfolio-grid article:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.32);
  }
}

/* Lightbox */

.portfolio-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 300ms ease, visibility 300ms ease;
}

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

.portfolio-lightbox[hidden] {
  display: none !important;
}

.portfolio-lightbox__backdrop {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(0, 0, 0, 0.95);
  cursor: pointer;
}

.portfolio-lightbox__img {
  position: relative;
  z-index: 1;
  display: block;
  max-width: min(1200px, 100%);
  max-height: min(88vh, 100%);
  object-fit: contain;
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 300ms ease, transform 300ms ease;
}

.portfolio-lightbox.is-open .portfolio-lightbox__img {
  opacity: 1;
  transform: scale(1);
}

.portfolio-lightbox__nav {
  position: absolute;
  top: 50%;
  z-index: 2;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 2rem;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
  transition: background 200ms ease;
}

.portfolio-lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.22);
}

.portfolio-lightbox__nav--prev {
  left: clamp(12px, 3vw, 32px);
}

.portfolio-lightbox__nav--next {
  right: clamp(12px, 3vw, 32px);
}

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

@media (prefers-reduced-motion: reduce) {
  .portfolio-grid article,
  .portfolio-grid article img,
  .portfolio-lightbox,
  .portfolio-lightbox__img {
    transition: none !important;
    transform: none !important;
  }
}