body {
  font-family: Arial, sans-serif;
  background: #121212;
  color: #fff;
  margin: 0;
  display: flex;
  height: 100vh;
}

#sidebar {
  width: 250px;
  background: #1e1e1e;
  padding: 20px;
  overflow-y: auto;
}

#sidebar img {
  width: 100%;
  border-radius: 5px;
}

#sidebar h3 {
  margin: 10px 0;
  font-size: 1em;
}

#player-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}

#controls button {
  margin: 5px;
  font-size: 1.2em;
}

#progress {
  width: 80%;
  margin: 15px 0;
}

#lyrics {
  width: 80%;
  height: 250px;
  overflow-y: auto;
  text-align: center;
  font-size: 1.2em;
  line-height: 1.8em;
  border: 1px solid #333;
  padding: 10px;
  background: #1e1e1e;
}

.line {
  opacity: 0.5;
  transition: opacity 0.3s;
}

.active {
  color: #1DB954;
  font-weight: bold;
  opacity: 1;
}

.word {
  opacity: 0.4;
  transition: opacity 0.2s, color 0.2s;
}
.word.active {
  opacity: 1;
  color: #1DB954; /* verde estilo Spotify */
  font-weight: bold;
}

@media (max-width: 768px) {
  body {
    flex-direction: column; /* Sidebar arriba en móviles */
  }
  #sidebar {
    width: 100%;
    display: flex;
    flex-direction: row;
    overflow-x: auto;
  }
  #sidebar .song {
    flex: 0 0 auto;
    width: 120px;
    margin-right: 10px;
  }
  #player-area {
    width: 100%;
  }
  #lyrics {
    height: 150px;
    font-size: 0.9em;
  }
}