body {
  background: linear-gradient(180deg, #0d0d2d, #1a1a3d);
  color: #e0e0e0;
  font-family: 'Orbitron', sans-serif;
  line-height: 1.4;
  margin: 0;
}

header {
  text-align: center;
  padding: 20px 0;
}
header img {
  height: 60px;
}
header h1 {
  margin: 10px 0;
  font-size: 2rem;
  color: #00ffff;
}

.links a {
  color: #00bfff;
  margin-right: 15px;
  font-size: 14px;
}
.links a:hover {
  color: #fff;
  text-decoration: none;
}

#searchbar {
  display: flex;
  max-width: 400px;
  margin: 0 0 0 auto;
  border: 2px solid #4e74ff;
  padding: 5px;
  border-radius: 4px;
  background: #000;
}
#searchbar input {
  flex: 1;
  background: transparent;
  border: none;
  color: #fff;
  outline: none;
}
#searchbar #btn {
  color: #4e74ff;
  cursor: pointer;
  padding: 0 5px;
}

#d3-container {
  width: 100%;
  height: 450px;
  margin: 40px auto;
  border: 1px solid #4e74ff;
}
.scale-label {
  color: #fff;
  text-align: center;
  margin-top: 4px;
}

#internalScale {
  width: 150px;
  margin: 0 auto;
  display: block;
}

.links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}