.slider {
  width: 100%;
  aspect-ratio: 16 / 5.6;
  position: relative;
  overflow: hidden;
  background-color: #000;
}

.fade-slider .slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.fade-slider .slide {
  position: absolute;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1); /* No agrandamos */
  transition: opacity 1.2s ease-in-out;
  z-index: 0;
}

.fade-slider .slide.active {
  opacity: 1;
  z-index: 1;
  transform: scale(1); /* sin animación de zoom */
}

/* Navegación (flechas izquierda y derecha) */
.nav {
  opacity: 0;
  transition: opacity 0.4s ease;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  background: rgba(0, 0, 0, 0.4);
  color: white;
  border: none;
  padding: 0 15px;
  cursor: pointer;
  z-index: 2;
}

.slider:hover .nav {
  opacity: 1;
}

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


.seccion-3 .slider {
  aspect-ratio: auto;
  height: clamp(420px, 75vh, 600px);
}