.carousel {
  perspective: 1200px; /* profondeur */
  width: 500px; 
  height: 250px;
  margin: 50px auto;
  position: relative;
  overflow: visible;
}

.carousel__container {
  width: 100%;
  height: 100%;
  position: absolute;
  transform-style: preserve-3d;
  animation: rotate 30s infinite linear;
}

.carousel__container img {
  position: absolute;
  left: 50%;
  top: 50%;
  transform-style: preserve-3d;
  transform-origin: center center;
  width: auto; /* ajuste selon tes images */
  height: auto;
  border-radius: 10px;
/*   box-shadow: 0 6px 14px rgba(0,0,0,0.35); */
}

/* Placement des 13 images (360/13 ≈ 27.7°) */
.carousel__container img:nth-child(1)  { transform: rotateY(0deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(2)  { transform: rotateY(27.7deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(3)  { transform: rotateY(55.4deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(4)  { transform: rotateY(83.1deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(5)  { transform: rotateY(110.8deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(6)  { transform: rotateY(138.5deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(7)  { transform: rotateY(166.2deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(8)  { transform: rotateY(193.9deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(9)  { transform: rotateY(221.6deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(10) { transform: rotateY(249.3deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(11) { transform: rotateY(277deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(12) { transform: rotateY(304.7deg) translateZ(400px) scaleY(0.9); }
.carousel__container img:nth-child(13) { transform: rotateY(332.4deg) translateZ(400px) scaleY(0.9); }

@keyframes rotate {
  from { transform: rotateY(0deg); }
  to   { transform: rotateY(-360deg); }
}