/* ==========================================================================
   高田崇史 Official Web Site — トップページ レスポンシブ対応
   style.css のデスクトップ表示をベースに、タブレット・スマートフォン幅を
   ブレークポイントごとに上書きする。
   ========================================================================== */

/* --------------------------------------------------------------------
   tablet (~1024px以下): 2カラム本文を1カラムへ、新刊グリッドを2列へ
   -------------------------------------------------------------------- */

@media (max-width: 1024px) {
  :root {
    --container-padding: 32px;
  }

  .new-books__grid {
    grid-template-columns: 1fr 1fr;
  }

  .new-books__grid .book-card:first-child {
    grid-column: 1 / -1;
  }

  .main__inner {
    grid-template-columns: 1fr;
  }

  .main__primary {
    padding: 40px 0;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .x-timeline {
    padding: 40px 0;
  }

  .x-timeline__sticky {
    position: static;
  }

  .discography__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .book-detail__layout {
    grid-template-columns: 240px 1fr;
    gap: 36px;
  }

  .essay-page__layout {
    grid-template-columns: 1fr;
  }

  .essay-sidebar__sticky {
    position: static;
  }
}

/* --------------------------------------------------------------------
   mobile (~768px以下)
   -------------------------------------------------------------------- */

@media (max-width: 768px) {
  :root {
    --container-padding: 20px;
  }

  .top-banner {
    font-size: 11px;
    padding: 8px 12px;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-top: 20px;
    padding-bottom: 20px;
  }

  .site-header__title {
    font-size: 20px;
    white-space: normal;
  }

  .site-header__subtitle {
    white-space: normal;
  }

  .site-header__nav {
    gap: 14px;
    font-size: 13px;
  }

  .new-books {
    padding: 32px 0 28px;
  }

  .new-books__card {
    padding: 22px;
  }

  .new-books__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .new-books__grid .book-card:first-child {
    grid-column: auto;
  }

  .section-heading__en {
    font-size: 20px;
  }

  .main__primary {
    gap: 40px;
  }

  .book-intro__grid {
    grid-template-columns: 1fr;
  }

  .profile__card {
    flex-direction: column;
  }

  .profile__photo {
    width: 130px;
    height: 165px;
  }

  .site-footer__inner {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }

  .discography__inner {
    padding-top: 32px;
  }

  .discography__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .discography__category-name {
    font-size: 16px;
  }

  .book-detail__layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .book-detail__cover img {
    max-width: 240px;
    margin: 0 auto;
  }

  .book-detail__title {
    font-size: 24px;
  }
}

/* --------------------------------------------------------------------
   small mobile (~480px以下)
   -------------------------------------------------------------------- */

@media (max-width: 480px) {
  .site-header__title {
    font-size: 18px;
  }

  .news__item {
    flex-direction: column;
    gap: 4px;
  }

  .news__date {
    width: auto;
  }

  .book-card--compact .book-card__image {
    width: 64px;
    height: 90px;
  }

  .book-card--compact .book-card__title {
    font-size: 14px;
  }

  .discography__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}