body {
  background: #1f1c2c;
  color: white;
  font-family: 'Segoe UI', sans-serif;
  text-align: center;
  padding: 40px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 30px;
}

.controls {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin: 30px 0;
}

button {
  padding: 12px 20px;
  font-size: 1.2rem;
  border: none;
  border-radius: 8px;
  background: #ff6699;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #ff3366;
}

.progress-container {
  width: 80%;
  margin: auto;
}

input[type=range] {
  width: 100%;
}