/* 參考：swiper-gallery.html — 上方主圖＋下方縮圖 */

.gallery-wrapper {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  background: #fff;
  box-sizing: border-box;
  overflow: hidden;
  clear: both;
  position: relative;
  z-index: 1;
}

/* 尚未初始化時只顯示第一張，避免疊圖 */
.main-swiper:not(.swiper-initialized) .swiper-slide:not(:first-child) {
  display: none !important;
}

.main-swiper {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #f2f2f2;
  --swiper-navigation-color: #fff;
  --swiper-theme-color: #0b59b6;
}

.main-swiper .swiper-slide {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.main-swiper .swiper-slide a {
  display: block;
  width: 100%;
  height: 100%;
}

.main-swiper img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
  border: 0;
}

.main-swiper .swiper-button-prev,
.main-swiper .swiper-button-next {
  width: 38px;
  height: 38px;
  margin-top: -19px;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  border-radius: 50%;
}

.main-swiper .swiper-button-prev::after,
.main-swiper .swiper-button-next::after {
  font-size: 16px;
  font-weight: bold;
}

.thumb-swiper {
  margin-top: 18px;
  padding: 8px 12px;
  height: 94px; /* 78px 縮圖 + 上下 padding */
  box-sizing: border-box;
  overflow: hidden;
}

.thumb-swiper .swiper-wrapper {
  height: 78px;
}

.thumb-swiper .swiper-slide {
  height: 78px;
  opacity: 0.55;
  border: 3px solid transparent;
  cursor: pointer;
  overflow: hidden;
  background: #eee;
  box-sizing: border-box;
  transition: 0.2s;
}

.thumb-swiper .swiper-slide:hover {
  opacity: 0.85;
}

.thumb-swiper .swiper-slide-thumb-active {
  opacity: 1;
  border-color: #0b59b6;
  transform: translateY(-2px);
}

.thumb-swiper img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 0;
}

.thumb-swiper:not(.swiper-initialized) .swiper-wrapper {
  display: grid !important;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  transform: none !important;
}

.thumb-swiper:not(.swiper-initialized) .swiper-slide {
  width: auto !important;
  margin: 0 !important;
}

@media (max-width: 767px) {
  .main-swiper {
    aspect-ratio: 16 / 9;
  }

  .thumb-swiper {
    height: 76px; /* 60px 縮圖 + padding */
  }

  .thumb-swiper .swiper-wrapper,
  .thumb-swiper .swiper-slide {
    height: 60px;
  }

  .thumb-swiper:not(.swiper-initialized) .swiper-wrapper {
    grid-template-columns: repeat(3, 1fr);
  }
}