/* Reset and global styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  font-family: Arial, sans-serif;
  color: #ffffff;
}

.app-container {
  text-align: center;
  padding: 20px;
}

h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  letter-spacing: 2px;
}

.song-display {
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

#listen-btn {
  background: #ffffff;
  color: #2a5298;
  border: none;
  border-radius: 50%;
  width: 120px;
  height: 120px;
  font-size: 3rem;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s, box-shadow 0.2s;
}

#listen-btn:active {
  transform: scale(0.95);
  box-shadow: 0 2px 7px rgba(0, 0, 0, 0.2);
}

@media (max-width: 600px) {
  h1 {
    font-size: 2rem;
  }
  .song-display {
    font-size: 1.2rem;
  }
  #listen-btn {
    width: 90px;
    height: 90px;
    font-size: 2rem;
  }
}