.banner-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9; /* 👈 FIXED 16:9 */
  overflow: hidden;
  border-radius: 14px;
  background: black; /* 👈 empty space cover */
}

.banner-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;

  display: flex;
  justify-content: center;
  align-items: center;
}

.banner-slide.active {
  opacity: 1;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* 👈 FULL IMAGE, NO CUT */
}

/* Arrows */
.banner-arrow {
  position: absolute;
  top: 45%;
  font-size: 45px;
  color: white;
  background: rgba(0,0,0,0.4);
  padding: 8px 16px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
}

.prev { left: 20px; }
.next { right: 20px; }

/* Mobile */
@media (max-width: 700px) {
  .banner-arrow {
    font-size: 28px;
  }
}