input[type="text"] {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  font-size: 16px;
}

.paper {
  border: 1px solid #ccc;
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 15px;
}

.paper-title {
  font-weight: bold;
  font-size: 18px;
}

.authors, .tags {
  margin-top: 8px;
  font-size: 14px;
}

.tag {
  display: inline-block;
  background-color: #eee;
  padding: 5px 10px;
  border-radius: 20px;
  margin-right: 5px;
  cursor: pointer;
  transition: background 0.3s;
}

.tag:hover {
  background-color: #ddd;
}