body {
  font-family: system-ui, sans-serif;
  background: #111827;
  color: white;
  padding: 40px;
  text-align: center;
}

.track-list {
  max-width: 500px;
  margin: 20px auto;
  text-align: left;
}

.track-item {
  background: #1f2937;
  padding: 15px;
  margin-bottom: 10px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.play-btn {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
}

.status-music {
  margin-top: 20px;
  color: #10b981;
}