.slider-container {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  margin: 0 auto;
  overflow: hidden;
  height: 530px;
}

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

.slide {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
  z-index: 0;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.slide.active {
  opacity: 1;
  z-index: 1;
}


/* دکمه‌های ناوبری */
.slider-container button.prev,
.slider-container button.next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(0,0,0,0.3);
  color: white;
  border: none;
  padding: 12px 18px;
  font-size: 20px;
  cursor: pointer;
  border-radius: 50%;
  z-index: 10;
  transition: background-color 0.3s ease;
}

.slider-container button.prev { left: 20px; }
.slider-container button.next { right: 20px; }

.slider-container button:hover {
  background-color: rgba(0,0,0,0.6);
}

/* ───── رسپانسیو موبایل ───── */
@media (max-width: 980px) {
  .slider-container {
    height: 270px; /* ارتفاع کمتر */
  }

  .slider-container button.prev,
  .slider-container button.next {
    padding: 10px 14px;
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  .slider-container {
    height: 260px;
  }

  .slider-container button.prev,
  .slider-container button.next {
    padding: 8px 12px;
    font-size: 14px;
  }
}

@media (max-width: 420px) {
  .slider-container {
    height: 200px;
  }

  .slider-container button.prev,
  .slider-container button.next {
    padding: 6px 10px;
    font-size: 12px;
  }
}