.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: #111;
}

.portfolio-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform .35s ease;
}

.portfolio-item:hover img { transform: scale(1.05); }

.portfolio-overlay {
  position: absolute;
  left:0; right:0; bottom:0;
  padding:12px;
  background: linear-gradient(0deg, rgba(0,0,0,.6), transparent);
  color:#fff;
}

.portfolio-name {
  font-weight:600;
  font-size:14px;
}