body {
  font-family: 'Noto Sans JP', sans-serif;
  max-width: 800px;
  margin: 20px auto;
  background-color: #e6f0fa;
  color: #333;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
  background-color: #d0e8f9;
  padding: 30px 20px;
  border-radius: 10px;
  border-bottom: 2px solid #aad4f5;
}

header h1 {
  font-size: 2em;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1em;
  color: #555;
}

.song {
  background: white;
  padding: 15px;
  border-radius: 8px;
  margin: 20px 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.song p {
  font-weight: bold;
  margin-bottom: 8px;
}

.song a {
  display: inline-block;
  padding: 8px 12px;
  margin-right: 10px;
  margin-bottom: 5px;
  background: #7dbde8;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.3s;
}

.song a:hover {
  background: #5ca5da;
}

/* YouTube専用ボタンの色を変更 */
a.youtube-link {
  background: #ff4c4c;
}

a.youtube-link:hover {
  background: #cc0000;
}

footer {
  text-align: center;
  margin-top: 40px;
  padding: 10px;
  color: #666;
}