body {
  font-family: sans-serif;
  background: #f8f9fa;
  margin: 0;
}
#auth-area,
#gallery-area {
  max-width: 600px;
  margin: 2rem auto;
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px #0001;
}
#gallery-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.gallery-thumb {
  display: block;
  border: 1px solid #ddd;
  border-radius: 4px;
  overflow: hidden;
  width: 160px;
  text-align: center;
  background: #fafafa;
  text-decoration: none;
  color: inherit;
}
.gallery-thumb img {
  width: 100%;
  height: 100px;
  object-fit: cover;
}