body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #111;
  color: #fff;
}

nav {
  display: flex;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: #000;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav .logo {
  font-size: 1.5em;
  font-weight: bold;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

.theme-gallery {
  padding: 2rem;
}

.slider {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.slider-item {
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.slider-item img {
  width: 200px;
  height: auto;
  border-radius: 8px;
}

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

.sub-gallery {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}

.sub-gallery img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  transition: transform 0.3s ease;
}

.sub-gallery img:hover {
  transform: scale(1.03);
}