.materials-section {
  max-width: 1100px;
  margin: 80px auto;
  text-align: center;
  padding: 0 20px;
}

.materials-section h2 {
  font-size: 32px;
  font-weight: 400;
  margin-bottom: 40px;
  color: #444;
}

/* Glavna slika */
.main-material {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
}

.main-material img {
  width: 100%;
  max-width: 800px;
  height: 220px;
  margin: 0 auto;
  display: block;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Thumbnail slider */
.materials-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 12px;

  max-height: 240px;              /* 🔥 OGRANIČAVA RENDER */
  overflow-y: auto;               /* vertikalni scroll */
  padding: 12px 0;

  scrollbar-width: thin;
  scrollbar-color: #999 transparent;

  
  will-change: transform;
  transform: translateZ(0);
}


.materials-thumbs::-webkit-scrollbar {
  height: 6px;
}

.materials-thumbs::-webkit-scrollbar-thumb {
  background: #ccc;
  border-radius: 10px;
}

.materials-thumbs img {
  width: 100%;
  height: auto;
  object-fit: cover;
  cursor: pointer;

  transform: translateZ(0);
  backface-visibility: hidden;
}


.materials-thumbs img:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.18);
}

.material-display img {
  will-change: transform, opacity;
  backface-visibility: hidden;
}

.materials-section,
.main-material img,
.materials-thumbs img {
  transform: translateZ(0);
  backface-visibility: hidden;
}