.custom-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  max-height: 700px;
}

.custom-slider .slides-wrapper {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease-in-out;
  will-change: transform;
}

.custom-slider .slide {
  flex: 0 0 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.custom-slider img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}

/* pijlen */
.slider-nav {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 8px;
  transform: translateY(-50%);
  pointer-events: none;
}

.slider-nav .prev,
.slider-nav .next {
  pointer-events: auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0,0,0,0.4);
  color: #fff;
  font-size: 1.4rem;
  display: grid;
  place-items: center;
  user-select: none;
  cursor: pointer;
}

/* ===== Responsief ===== */
@media (max-width: 991px) {
  .custom-slider { aspect-ratio: 4 / 3; max-height: 500px; }
  .slider-nav .prev, .slider-nav .next { width: 38px; height: 38px; font-size: 1.2rem; }
}
@media (max-width: 500px) {
  .custom-slider { aspect-ratio: 1 / 1; max-height: 280px; }
  .slider-nav .prev, .slider-nav .next { width: 30px; height: 30px; font-size: 1rem; }
}