/* ==================== COLLECTION SUB-NAV ==================== */
.coll-subnav {
  margin: 0 0 20px;
}

.coll-subnav__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  /* Hiển thị tối đa 5 item, item thứ 6+ lướt ngang để xem */
  scroll-snap-type: x mandatory;
}
.coll-subnav__list::-webkit-scrollbar { display: none; }

/* ---- Item ---- */
.coll-subnav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  flex: 0 0 auto;
  width: 120px;
  transition: opacity 0.2s;
  scroll-snap-align: start;
}
.coll-subnav__item:hover {
  opacity: 0.75;
  text-decoration: none;
  color: inherit;
}

/* ---- Image wrap ---- */
.coll-subnav__img-wrap {
  width: 120px;
  height: 120px;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color 0.2s;
  background: #f5f5f5;
  position: relative;
}
.coll-subnav__item.is-active .coll-subnav__img-wrap {
  border-color: #000;
}

.coll-subnav__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---- Name ---- */
.coll-subnav__name {
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  line-height: 1.3;
  color: #0a0a0a;
}
.coll-subnav__item.is-active .coll-subnav__name {
  font-weight: 700;
  color: #000;
}

/* ==================== LEVEL SIZES ==================== */

/* Cấp 1 (con của cấp 1 / anh em cấp 2): lớn nhất */
.coll-subnav--lv1 .coll-subnav__item { width: 120px; }
.coll-subnav--lv1 .coll-subnav__img-wrap { width: 120px; height: 120px; }
.coll-subnav--lv1 .coll-subnav__name { font-size: 13px; }

/* Cấp 2 (anh em cấp 3): vừa */
.coll-subnav--lv2 .coll-subnav__item { width: 100px; }
.coll-subnav--lv2 .coll-subnav__img-wrap { width: 100px; height: 100px; border-radius: 8px; }
.coll-subnav--lv2 .coll-subnav__name { font-size: 12px; }

/* Cấp 3 (anh em cấp 4): nhỏ nhất */
.coll-subnav--lv3 .coll-subnav__item { width: 80px; }
.coll-subnav--lv3 .coll-subnav__img-wrap { width: 80px; height: 80px; border-radius: 6px; }
.coll-subnav--lv3 .coll-subnav__name { font-size: 11px; }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 767px) {
  .coll-subnav__name {
    font-size: 14px;

  }
  .coll-subnav__item { width: 90px; }
  .coll-subnav__img-wrap { width: 90px; height: 90px; }

  .coll-subnav--lv1 .coll-subnav__item { width: 90px; }
  .coll-subnav--lv1 .coll-subnav__img-wrap { width: 90px; height: 90px; }

  .coll-subnav--lv2 .coll-subnav__item { width: 76px; }
  .coll-subnav--lv2 .coll-subnav__img-wrap { width: 76px; height: 76px; }

  .coll-subnav--lv3 .coll-subnav__item { width: 64px; }
  .coll-subnav--lv3 .coll-subnav__img-wrap { width: 64px; height: 64px; }

  .coll-subnav__list { gap: 8px; }
}