@charset "utf-8";

/* ========================================
   common.css
   下層ページ共通スタイル
   ヘッダー / ページタイトル /
   ページネーション / 戻るボタン /
   サイドボタン / ハンバーガーメニュー
======================================== */


/* ========== HEADER ========== */
.header {
  width: 100%;
  background-color: #fff;
  position: sticky;
  top: 0;
  z-index: 500;
}

.header__inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

/* ロゴ */
.header__logo a {
  display: block;
  line-height: 1;
}

.header__logo img {
  width: 200px;
  height: auto;
  display: block;
}

/* ナビゲーション */
.header__nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__nav-item a {
  display: inline-block;
  position: relative;
  font-size: 15px;
  color: #333333;
  text-decoration: none;
  padding-bottom: 4px;
}

/* アンダーラインアニメーション（お問い合わせ以外） */
.header__nav-item:not(.header__nav-item--contact) a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #0099c3;
  transition: width 0.3s ease;
}

.header__nav-item:not(.header__nav-item--contact) a:hover::after {
  width: 100%;
}

/* カレント */
.header__nav-item.is-current a::after {
  width: 100%;
}

/* お問い合わせボタン */
.header__nav-item--contact a {
  background-color: #0099c3;
  color: #fff;
  padding: 10px 20px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.header__nav-item--contact a:hover {
  background-color: #fff;
  color: #0099c3;
  outline: 2px solid #0099c3;
}

@media screen and (max-width: 768px) {
  .header__inner {
    height: 56px;
    padding: 0 16px;
    box-sizing: border-box;
  }

  .header__logo img {
    width: 150px;
  }

  .header__nav {
    display: none;
  }
}
/* ========== /HEADER ========== */


/* ========== PAGE TITLE ========== */
/*
  ページ上部の共通タイトルエリア
  <div class="page-title">
    <h1 class="page-title__text">お知らせ</h1>
    <img src="img/underbar.jpg" alt="" class="page-title__bar">
  </div>
*/
.page-title {
  width: 100%;
  padding: 60px 0 80px;
  text-align: center;
}

.page-title__text {
  font-family: "Zen Old Mincho", serif;
  font-size: 36px;
  font-weight: 500;
  color: #333333;
  margin: 0 0 16px;
  line-height: 1.2;
}

.page-title__bar {
  display: block;
  width: 240px;
  height: 8px;
  margin: 0 auto;
}

@media screen and (max-width: 768px) {
  .page-title {
    padding: 40px 0 50px;
  }

  .page-title__text {
    font-size: 26px;
  }

  .page-title__bar {
    width: 160px;
  }
}
/* ========== /PAGE TITLE ========== */


/* ========== PAGINATION ========== */
/*
  <nav class="pagination">
    <a href="#" class="pagination__prev">&lt;</a>
    <ul class="pagination__list">
      <li class="pagination__item is-current"><span>1</span></li>
      <li class="pagination__item"><a href="#">2</a></li>
      <li class="pagination__item"><a href="#">3</a></li>
    </ul>
    <a href="#" class="pagination__next">&gt;</a>
  </nav>
*/
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 60px 0 70px;
}

.pagination__list {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pagination__item a,
.pagination__item span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 15px;
  color: #333333;
  border: 1px solid #cccccc;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.pagination__item a:hover {
  background-color: #0099c3;
  color: #fff;
  border-color: #0099c3;
}

.pagination__item.is-current span {
  background-color: #0099c3;
  color: #fff;
  border-color: #0099c3;
}

.pagination__prev,
.pagination__next {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 15px;
  color: #333333;
  border: 1px solid #cccccc;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.pagination__prev:hover,
.pagination__next:hover {
  background-color: #0099c3;
  color: #fff;
  border-color: #0099c3;
}

@media screen and (max-width: 768px) {
  .pagination {
    margin: 40px 0 50px;
  }

  .pagination__item a,
  .pagination__item span,
  .pagination__prev,
  .pagination__next {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }
}
/* ========== /PAGINATION ========== */


/* ========== BACK BUTTON ========== */
/*
  「← トップページ」「← 一覧に戻る」共通ボタン
  <div class="back-btn-wrap">
    <a href="index.php" class="back-btn">← トップページ</a>
  </div>
*/
.back-btn-wrap {
  text-align: center;
  margin-bottom: 100px;
}

.back-btn {
  display: inline-block;
  font-size: 16px;
  color: #333333;
  border: 1px solid #333333;
  padding: 14px 50px;
  text-decoration: none;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.back-btn:hover {
  background-color: #333333;
  color: #fff;
}

@media screen and (max-width: 768px) {
  .back-btn-wrap {
    margin-bottom: 60px;
    padding: 0 20px;
    box-sizing: border-box;
  }

  .back-btn {
    display: block;
    text-align: center;
    padding: 14px 20px;
  }
}
/* ========== /BACK BUTTON ========== */


/* ========== SIDE FIXED BUTTON ========== */
.side-btn {
  position: fixed;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

/* 下層ページは常時表示 */
.side-btn.is-visible {
  opacity: 1;
  visibility: visible;
}

.side-btn a {
  display: block;
  line-height: 1;
  transition: opacity 0.3s ease;
}

.side-btn a:hover {
  opacity: 0.8;
}

.side-btn img {
  width: 62px;
  height: 290px;
  display: block;
}

@media screen and (max-width: 768px) {
  .side-btn {
    display: none;
  }
}
/* ========== /SIDE FIXED BUTTON ========== */