body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background-color: #f0f2f5;
}

.container {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: 320px;
  background: #fff;
  border-right: 1px solid #ddd;
  padding: 1rem;
  overflow-y: auto;
}

.sidebar input {
  width: 100%;
  padding: 0.5rem;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar li {
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: background 0.2s;
}

.sidebar li:hover,
.sidebar li.active {
  background-color: #e6f7ff;
}

.sidebar img.thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 4px;
}

.content {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

.placeholder {
  font-size: 1.2rem;
  color: #999;
}

.hidden {
  display: none;
}

#galleryWrapper {
  margin-top: 1rem;
}

#galleryWrapper a img {
  height: 120px;
  margin: 5px;
  object-fit: cover;
  border-radius: 4px;
}

#detailTags {
  margin-bottom: 1rem;
  color: #666;
  font-size: 0.9rem;
}

#downloadBlock {
  margin: 1rem 0;
}

.download-btn {
  padding: 0.5rem 1rem;
  background-color: #4caf50;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.95rem;
}

.download-btn:hover {
  background-color: #45a049;
}

#versionTableWrapper table {
  margin-top: 1rem;
  width: 100%;
  border-collapse: collapse;
}

#versionTableWrapper th,
#versionTableWrapper td {
  padding: 0.5rem;
  border: 1px solid #ccc;
}