/* =====================================================================
   PHẦN CƠ SỞ VẬT CHẤT – giao diện
   Tiện ích, thư viện ảnh, mục "Trong lớp học".
   ===================================================================== */

.amenities { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--ke); }
.amenities li { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.amenities .icon { color: var(--xanh-2); width: 20px; height: 20px; }
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.gallery__item { position: relative; display: block; border-radius: 4px; overflow: hidden; aspect-ratio: 4 / 3; background: var(--ke); }
.gallery__item:first-child { grid-column: span 2; grid-row: span 2; aspect-ratio: auto; }
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: opacity 0.2s; }
.gallery__item:hover img { opacity: 0.88; }
.gallery--class .gallery__item:first-child { grid-column: auto; grid-row: auto; aspect-ratio: 4 / 3; }
.gallery__cap {
  position: absolute; left: 8px; bottom: 8px; right: 8px; width: fit-content; max-width: calc(100% - 16px);
  background: #fff; color: var(--muc); font-size: 13px; line-height: 1.35; padding: 5px 9px; border-radius: 3px;
}

@media (max-width: 1000px) {
  .gallery { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .gallery { grid-template-columns: 1fr 1fr; gap: 8px; }
  .gallery__cap { font-size: 12px; left: 6px; bottom: 6px; }
}