const GROUPS = [
  {
    id:'starlight',
    name:'ST★RLIGHT',
    color:'#7c9cff',
    songs:[
      { id:'shooting-star', title:'Shooting Star', bpm:122, audio:'songs/shooting-star.mp3' },
      { id:'neon-night', title:'Neon Night', bpm:118, audio:'songs/neon-night.mp3' }
    ],
    rewards:[
      { id:'starlight-neonTree', label:'Neon Palm', emoji:'🌴' },
      { id:'starlight-stage', label:'Mini Stage', emoji:'🎤' }
    ]
  },
  {
    id:'pinkwave',
    name:'Pink Wave',
    color:'#ff79c6',
    songs:[
      { id:'candy-pop', title:'Candy Pop', bpm:128, audio:'songs/candy-pop.mp3' },
      { id:'bubble-heart', title:'Bubble Heart', bpm:130, audio:'songs/bubble-heart.mp3' }
    ],
    rewards:[
      { id:'pinkwave-heart', label:'Heart Arch', emoji:'💖' },
      { id:'pinkwave-cotton', label:'Cotton Cloud', emoji:'🍭' }
    ]
  },
  {
    id:'skyline',
    name:'Skyline Dream',
    color:'#70a1ff',
    songs:[
      { id:'midnight-flight', title:'Midnight Flight', bpm:124, audio:'songs/midnight-flight.mp3' },
      { id:'starlit-city', title:'Starlit City', bpm:126, audio:'songs/starlit-city.mp3' }
    ],
    rewards:[
      { id:'skyline-tower', label:'Sky Tower', emoji:'🏙️' },
      { id:'skyline-balloon', label:'Sky Balloon', emoji:'🎈' }
    ]
  },
  {
    id:'stray-kids-superstars',
    name:'Stray Kids Power',
    color:'#ff4444',
    songs:[
      { id:'maniac', title:'Maniac', bpm:96, audio:'songs/maniac.mp3' },
      { id:'hall-of-fame', title:'Hall of Fame', bpm:160, audio:'songs/hall-of-fame.mp3' },
      { id:'escape', title:'Escape', bpm:155, audio:'songs/escape.mp3' },
      { id:'lalalala', title:'LALALALA', bpm:126, audio:'songs/lalalala.mp3' }
    ],
    rewards:[
      { id:'skz-godsmenu-banner', label:'God’s Menu Banner', emoji:'🍽️' },
      { id:'skz-chaos-crown', label:'Chaos Crown', emoji:'👑' }
    ]
  }
];