body {
  margin: 0;
  font-family: sans-serif;
  background: #0d1117;
  color: #fff;
  overflow: hidden;
}

.container {
  padding: 20px;
  text-align: center;
}

.header {
  font-size: 24px;
  margin-bottom: 20px;
}

#graph-container {
  position: relative;
  width: 100%;
  height: 200px;
  border: 1px solid #555;
  margin-bottom: 20px;
  overflow: hidden;
  background: #161b22;
}

#dot {
  position: absolute;
  width: 10px;
  height: 10px;
  background: #00ff7f;
  border-radius: 50%;
  top: 90%;
  left: 0;
  transition: left 0.1s linear;
}

.multiplier {
  font-size: 32px;
  margin: 20px 0;
}

.controls input,
.controls button {
  padding: 10px;
  margin: 5px;
  font-size: 16px;
  border-radius: 8px;
  border: none;
}

button {
  background: #1f6feb;
  color: #fff;
  cursor: pointer;
}

button:hover {
  background: #388bfd;
}

@media (max-width: 600px) {
  .multiplier {
    font-size: 24px;
  }
}
