.thumb-box {
  width: 65px;
  height: 65px;
  object-fit: cover;
  cursor: pointer;
  border-radius: 8px;
  border: 2px solid transparent;
  transition: 0.2s;
}
.thumb-box:hover     { border-color: #0d6efd; transform: scale(1.05); }
.thumb-active        { border-color: #0d6efd !important; }

.thumb-wrapper {
  max-height: 520px;
  overflow-y: auto;
  padding-right: 5px;
}
.thumb-wrapper::-webkit-scrollbar { width: 4px; }
.product-main-wrapper { position: relative; width: 100%; }

.product-main-img {
  width: 100%;
  height: 620px;
  object-fit: contain;
  border-radius: 12px;
}
.img-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  color: #fff;
  border: none;
  width: 40px; height: 40px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  z-index: 2;
}
.img-prev { left: 10px;  }
.img-next { right: 10px; }
.qty-box button { width: 32px; height: 32px; }
.qty-input { width: 55px; text-align: center; }
.size-radio { cursor: pointer; }
.size-radio input[type="radio"] { display: none; }
.size-radio span {
  display: inline-block;
  padding: 6px 14px;
  border: 2px solid #ccc;
  border-radius: 6px;
  font-size: 14px;
  transition: 0.2s;
}
.size-radio input[type="radio"]:checked + span {
  border-color: #E74425;
  background: #E74425;
  color: #fff;
}
.size-radio.disabled-size span { opacity: 0.4; cursor: not-allowed; }
#cart-icon-detail {
  position: relative;
  background-color: #E74425;
  color: white;
  border: none;
}
#cart-count-detail {
  position: absolute;
  top: -10px;
  background: #fff;
  color: #ffffff;
  border-radius: 50%;
  padding: 2px 7px;
  font-size: 12px;
  font-weight: bold;
}

#cart-toast {
  position: fixed;
  bottom: 30px; right: 30px;
  background: #333;
  color: #fff;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
  z-index: 9999;
}
#cart-toast.show {
  opacity: 1;
  pointer-events: auto; }