/*
  基本スタイル
  全体の色味はクリームがかった背景と落ち着いた赤で統一しています。
*/

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Noto Serif JP", serif;
  background-color: #f8f3ec;
  color: #333;
  line-height: 1.6;
}

/* ロゴをセンターに配置 */
.header {
  text-align: center;
  padding: 1.5rem 0;
}
.logo {
  max-width: 220px;
  width: 70%;
  height: auto;
}

/* ヒーローセクション */
.hero {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 65vh;
}
.hero-bg img {
  width: 100%;
  height: auto;
  display: block;
  filter: brightness(96%) saturate(105%);
}
.hero-content {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
}
/* 左側は縦書き */
.hero-left {
  width: 45%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  position: relative;
}
.vertical-text {
  font-size: 0.9rem;
  color: #7c1520;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  line-height: 1.4;
}
.petal-decoration {
  position: absolute;
  bottom: -10%;
  right: -15%;
  width: 80%;
  max-width: 150px;
  opacity: 0.6;
}

.hero-right {
  width: 55%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.book-cover {
  width: 80%;
  max-width: 280px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}

/* CTA セクション */
.call-to-action {
  padding: 2rem 1rem;
  text-align: center;
  background-color: #fbf7f2;
}
.call-to-action h2 {
  margin-top: 0;
  color: #7c1520;
  font-size: 1.3rem;
}
.call-to-action p {
  margin: 0.5rem 0;
  font-size: 1rem;
}
.cta-button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.8rem 1.6rem;
  background-color: #7c1520;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  font-size: 1rem;
}
.cta-button:hover {
  background-color: #a72b35;
}
.note {
  margin-top: 0.6rem;
  font-size: 0.75rem;
  color: #666;
}

/* シリーズ紹介セクション */
.series {
  padding: 2rem 1rem;
  text-align: center;
  background-color: #f8f3ec;
}
.series h2 {
  margin-top: 0;
  color: #7c1520;
  font-size: 1.2rem;
}
.series-books {
  display: flex;
  justify-content: space-around;
  gap: 1rem;
  margin-top: 1rem;
}
.series-books .book {
  width: 45%;
}
.series-books .book img {
  width: 100%;
  border-radius: 4px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}
.series-books .book p {
  margin-top: 0.4rem;
  font-size: 0.85rem;
  color: #444;
}

/* あらすじセクション */
.about {
  padding: 2rem 1rem;
  background-color: #fbf7f2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.character img {
  width: 70%;
  max-width: 260px;
  margin-bottom: 1rem;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.story h2 {
  margin: 0 0 0.8rem 0;
  font-size: 1.2rem;
  color: #7c1520;
}
.story p {
  margin: 0;
  font-size: 0.95rem;
  color: #333;
  line-height: 1.6;
  text-align: justify;
}

/* フッター */
footer {
  position: relative;
  background-color: #f8f3ec;
  overflow: hidden;
  text-align: center;
  padding-bottom: 1rem;
}
.footer-decoration img {
  width: 100%;
  height: auto;
  display: block;
  margin-top: -4rem;
}
.footer-text {
  margin: 0.5rem 0;
  font-size: 0.8rem;
  color: #666;
}

/* モバイルファーストなので基本はそのまま。必要に応じて大画面でレイアウト調整 */
@media (min-width: 600px) {
  .hero {
    min-height: 70vh;
  }
  .vertical-text {
    font-size: 1rem;
  }
  .call-to-action h2 {
    font-size: 1.5rem;
  }
  .call-to-action p {
    font-size: 1.1rem;
  }
  .series-books .book p {
    font-size: 0.9rem;
  }
}