/* =======================================
   ドラえもんページ固有スタイル
   ======================================= */


:root {
  /* ===== Brand Colors ===== */
  --color-blue: #39b2e6;
  /* 青 */
  --color-yellow: #fffc93;
  /* 明るい黄色 */

}

body {
  background-color: #ade7ff;
}

.section {
  padding: 20px 0;
  margin: auto;
}

.hero-image img {
  width: 100%;
  max-width: 1080px;
}

.logo {
  max-width: 620px;
  margin: -7rem auto 0;
}


.hamburger-menu {
  mix-blend-mode: unset;
}

.hamburger-menu span {
  background: var(--color-black2);
}


/* アコーディオン ========================= */
.acd-header {
  color: var(--color-white);
  padding: 3px 16px;
  height: unset;
  border-radius: 20px;
  transform: rotate(0.05deg);
}

.book-cover-list {
  --item-width: 40vw;
  --item-gap: 16px;
  --shift: calc(var(--item-width) * 4 + var(--item-gap) * 3);
}


/* そのほか ========================= */
.sales-links {
  margin-top: unset;
}

.sales-link {
  width: 32.5%;
  height: 50px;
  font-size: 1rem;
  transform: rotate(0.05deg);
}

#book-covers {
  background-color: white;
  padding: 0;
}

.book-item {
  width: 280px;
  height: 280px;
  max-width: 280px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.book-item img {
  width: 90%;
  height: auto;
  display: block;
  margin: auto;
  text-align: center;
  transition: transform .3s ease, opacity .3s ease;
  /* ← transformも追加 */
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, .40));
  /* 初期影 */
}

.book-item:hover img {
  transform: scale(1.025);
  /* 1.05〜1.08程度が自然 */
  opacity: 0.8;
}

.sales-link img {
  height: 48px;
}

.list-book-cover {
  margin-bottom: unset;
  width: 100%;
}

.book-entry {
  flex-direction: column;
  gap: 20px;
}

.book-title {
  font-size: 1.75rem;
}

.book-bold {
  font-weight: 500;
  margin: 5px 0;
}

.book-text {
  font-size: 0.825rem;
  margin: 0 auto;
}

.book-info {
  text-align: center;
  justify-content: center;
  display: flex;
  margin: auto;
  flex-direction: row;
  width: 100%;
  gap: 30px;
}

.book-cover-area {
  flex: 0 0 280px;
  max-width: 280px;
}

.book-info-area {
  text-align: center;
  justify-content: space-evenly;
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.button-detail {
  width: 300px;
  height: 35px;
  margin: auto;
}

/* 全体
	--------------------------------- */
.PC {
  display: block;
}

.SP {
  display: none;
}



/* =======================================
   レスポンシブ対応 (Max-width: 767px)
   ======================================= */
@media (max-width: 767px) {
  .section {
    padding: 10px 0px;
  }

  .book-covers-section {
    padding: 0px;
  }

  .acd-header {
    width: 95%;
    font-size: 1rem;
  }

  .book-entry-container {
    width: 95%;
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: auto;
  }

  .logo {
    width: 80%;
    margin: -1rem auto auto auto;
  }

  #start_list {
    margin-top: -2rem;
  }


  .book-entry {
    padding: 10px;
    width: 95%;
    margin: auto;
  }

  .book-text {
    font-size: 0.6875rem;
    margin: 0 auto;
  }

  .button-detail {
    height: 25px;
    font-size: 1rem;
  }

  .list-book-cover {
    width: 80%;
  }


  .hero-image {
    display: flex;
    margin: 40px 0 0 0;
  }

  .acd-item.is-open .acd-body {
    width: 95%;
    margin: 10px auto 0;
    font-size: 0.75rem;
    line-height: 1.5;
    padding: 10px;
    border-radius: 5px;
  }

  .book-cover-list {
    gap: 0px;
  }

  .list-book-cover {
    max-width: 160px;
  }

  .book-title {
    font-size: 1.25rem;
  }

  .book-cover-area {
    flex: none;
    width: 200px;
    margin: auto;
  }

  .book-bold {
    font-size: 0.75rem;
  }

  .sales-link img {
    height: 30px;
  }

  .book-item {
    height: auto;
    padding: 10px;
  }

  .book-info {
    flex-direction: column;
    gap: 15px;
  }

  .sales-link {
    width: 46%;
    height: 40px;
  }

  .info-separator {
    margin: 10px auto;
    width: 95%;
  }


  .acd-body {
    padding: 10px;
  }

  /* 全体
	--------------------------------- */
  .PC {
    display: none;
  }

  .SP {
    display: block;
  }


}