/* ===== Hero slider ===== */
.slider {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--blue-50);
  border-radius: 24px;
  box-shadow: var(--shadow-md);
}

.slider__track {
  position: relative;
  width: 100%;
  height: 100%;
}

.slider__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.slider__slide.is-active {
  opacity: 1;
  visibility: visible;
}

.slider__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  box-shadow: none;
  display: block;
}

.slider__btn {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--navy);
  background: rgba(255, 255, 255, 0.9);
  border: 0;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transform: translateY(-50%);
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.slider__btn:hover {
  background: #fff;
  transform: translateY(-50%) scale(1.06);
}

.slider__btn--prev {
  left: 12px;
}

.slider__btn--next {
  right: 12px;
}

.slider__dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 12px;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.slider__dot {
  width: 10px;
  height: 10px;
  padding: 0;
  background: rgba(255, 255, 255, 0.6);
  border: 0;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(11, 31, 58, 0.25);
  cursor: pointer;
  transition: width 0.2s ease, background-color 0.2s ease;
}

.slider__dot.is-active {
  width: 26px;
  background: #fff;
  border-radius: 999px;
}

.slider--single .slider__btn,
.slider--single .slider__dots {
  display: none;
}

.hero__book {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

@media (prefers-reduced-motion: reduce) {
  .slider__slide {
    transition: none;
  }
}