:root {
  font-size: 16px;
}

body {
  background-color: #111111;
  color: #ffffff;
  margin: 0;
  font-family: sans-serif;
}

a {
  color: #ff88cc;
}

a:hover {
  color: #ff5599;
}

/* ヘッダー */
header {
  padding: 1.5rem 1rem 1rem;
  border-bottom: 1px solid #333;
}

header h1 {
  font-size: 2.5rem;
  margin: 0;
}

/* メイン */
main {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* フッター */
footer {
  border-top: 1px solid #333;
  padding: 2rem 1rem;
  text-align: center;
  color: #888;
}

footer p {
  margin: 0.4rem 0;
}

/* 代理公開告知ボックス */
.notice-box {
  border-left: 3px solid #ff88cc;
  background: #1a1a1a;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}

.notice-box p {
  margin: 0.3rem 0;
  line-height: 1.7;
  font-size: 0.9rem;
  color: #ccc;
}

/* 利用規約ボックス */
.terms-box {
  border: 1px solid #444;
  background: #1a1a1a;
  padding: 1.5rem;
  margin-bottom: 3rem;
}

.terms-box h2 {
  margin: 0 0 1rem 0;
  font-size: 1rem;
  color: #aaa;
  border-bottom: 1px solid #444;
  padding-bottom: 0.5rem;
}

.terms-box p {
  margin: 0.5rem 0;
  line-height: 1.7;
}

/* 楽曲リスト */
.track-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.track {
  border-bottom: 1px solid #2a2a2a;
  padding: 1.25rem 0;
}

.track:first-child {
  border-top: 1px solid #2a2a2a;
}

.track h2 {
  font-size: 1rem;
  font-weight: normal;
  margin: 0 0 0.6rem 0;
  color: #eee;
}

.track audio {
  width: 100%;
  max-width: 480px;
  height: 32px;
  display: block;
}

/* ループ対応曲 */
.track-parts {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.track-part {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
}

.part-label {
  font-size: 0.8rem;
  color: #888;
  min-width: 3rem;
  flex-shrink: 0;
}

/* 全曲ダウンロード */
.download-section {
  margin-top: 3rem;
  padding: 1rem 0;
  border-top: 1px solid #2a2a2a;
  font-size: 0.95rem;
  color: #ccc;
}

/* レスポンシブ */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.8rem;
  }

  .track-part {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }

  .part-label {
    min-width: unset;
  }
}