/* ============================================================
   common.css  ─  biz-search.net Header & Footer , ToTop button
   WordPress Block Theme (FSE) スタイル再現
============================================================ */

/* ============================================================
   Reset & Base
============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', -apple-system, 'Hiragino Sans', 'Meiryo', sans-serif;
  font-size: 14px;
  color: #333;
  background: #fff;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ============================================================
   CSS Variables  (WordPress theme の --wp--preset--color--* に対応)
============================================================ */
:root {
  --wp--foreground: #000000;
  --wp--primary: #3f6de4;
  --wp--background: #ffffff;
  --wp--preset--font-size--tiny: 0.875rem;
  --header-height-desktop: 83px; /* padding 20px×2 + logo 43px */
  --_global--container-max-width: 1280px;
  --wp--style--global--wide-size: 1280px; /* WordPress alignwide 用 */
}

/* ============================================================
   GLOBAL HEADER  ── biz-search.net 完全再現
   WordPress Block Theme: wp-block-template-part > header
============================================================ */

/* 最外ラッパー: has-background-background-color */
.site-header-wrap {
  background-color: var(--wp--background);
  position: sticky;
  top: 0;
  z-index: 9999;
  box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}

/* 内側 group: is-content-justification-space-between, alignwide */
/* 外側ラッパー: padding-right:15px padding-left:15px (実際のHTML通り) */
.site-header-outer {
  padding: 0 15px;
}

/* 内側 alignwide: max-width で幅制限、左右padding:0、上下padding:20px */
.site-header-inner {
  max-width: var(--_global--container-max-width);
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* ---------- ロゴ + サイトタイトル エリア ---------- */
.site-branding-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* wp-block-site-logo */
.wp-block-site-logo a {
  display: inline-flex;
  align-items: center;
}
.wp-block-site-logo img {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

/* wp-block-site-title: font-size 1.1rem, weight 500, letter-spacing 2px */
.wp-block-site-title a {
  font-size: 1.1rem;
  font-style: normal;
  font-weight: 500;
  text-transform: capitalize;
  letter-spacing: 2px;
  color: var(--wp--foreground);
  text-decoration: none;
  white-space: nowrap;
}
.wp-block-site-title a:hover {
  color: var(--wp--foreground);
}

/* ---------- ナビゲーション エリア ---------- */

/* モバイルハンバーガー開閉ボタン */
.wp-block-navigation__responsive-container-open {
  display: none; /* デスクトップでは非表示 */
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--wp--foreground);
  align-items: center;
  justify-content: center;
}
.wp-block-navigation__responsive-container-open svg {
  display: block;
}

/* ナビ ul: font-size 0.9rem, weight 600 */
.wp-block-navigation__container {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: 0.9rem;
  font-style: normal;
  font-weight: 600;
  text-transform: capitalize;
  color: var(--wp--foreground);
}

/* 第1階層 li */
.wp-block-navigation-item {
  position: relative;
}

/*
  has-child な li は a と button を横並びにする。
  実際の WordPress Block Theme と同じ構造:
    <li>
      <a>...</a>
      <button class="wp-block-navigation-submenu__toggle">chevron</button>
      <ul class="wp-block-navigation__submenu-container">...</ul>
    </li>
*/
.wp-block-navigation-item.has-child {
  display: flex;
  align-items: stretch;
}
/* has-child の a: button と隙間を詰める */
.wp-block-navigation-item.has-child > .wp-block-navigation-item__content {
  padding-right: 4px;
}

/* 第1階層 a: ホバー時に中央から広がる下線アニメーション */
.wp-block-navigation-item__content {
  display: flex;
  align-items: center;
  padding: 8px 14px;
  gap: 4px;
  color: var(--wp--foreground);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  position: relative;
}
/* 中央から広がる下線アニメーション */
.wp-block-navigation-item__content::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  right: 50%;
  height: 2px;
  background-color: var(--wp--primary);
  transition: left 0.25s ease, right 0.25s ease;
}
.wp-block-navigation-item:hover > .wp-block-navigation-item__content::after,
.wp-block-navigation-item:focus-within > .wp-block-navigation-item__content::after {
  left: 0;
  right: 0;
}

/* サブメニュー展開ボタン (chevron): a の右に隣接して配置 */
.wp-block-navigation-submenu__toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 10px 0 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--wp--foreground);
  flex-shrink: 0;
  position: relative;
}
.wp-block-navigation-submenu__toggle svg {
  display: block;
  stroke: currentColor;
  transition: transform 0.2s ease;
}
/* デスクトップ: hover または is-open で chevron を回転 */
.wp-block-navigation-submenu:hover > .wp-block-navigation-submenu__toggle svg,
.wp-block-navigation-submenu.is-open > .wp-block-navigation-submenu__toggle svg {
  transform: rotate(180deg);
}
/* モバイル: hover は無効、is-open のみで chevron を回転 */
@media screen and (max-width: 781px) {
  .wp-block-navigation-submenu:hover > .wp-block-navigation-submenu__toggle svg {
    transform: rotate(0deg);
  }
  .wp-block-navigation-submenu.is-open > .wp-block-navigation-submenu__toggle svg {
    transform: rotate(180deg);
  }
}

/* ---------- ドロップダウン (sub-menu) ---------- */
.wp-block-navigation__submenu-container {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background-color: var(--wp--background);
  color: var(--wp--foreground);
  border: 1px solid rgba(0,0,0,0.12);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  z-index: 10000;
  padding: 8px 0;
}
/* デスクトップ: hover OR is-open でサブメニュー表示 */
.wp-block-navigation-submenu:hover > .wp-block-navigation__submenu-container,
.wp-block-navigation-submenu.is-open > .wp-block-navigation__submenu-container {
  display: block;
}
/* モバイル: hover は無効、is-open のみで制御 */
@media screen and (max-width: 781px) {
  .wp-block-navigation-submenu:hover > .wp-block-navigation__submenu-container {
    display: none;
  }
  .wp-block-navigation-submenu.is-open > .wp-block-navigation__submenu-container {
    display: block;
  }
}
/* サブメニュー内の a */
.wp-block-navigation__submenu-container .wp-block-navigation-item__content {
  font-weight: 600;
  font-size: 0.9rem;
  padding: 9px 20px;
  display: block;
  white-space: nowrap;
}
/* サブメニュー内ホバー下線は非表示にして背景色変化のみ */
.wp-block-navigation__submenu-container .wp-block-navigation-item__content::after {
  display: none;
}
.wp-block-navigation__submenu-container .wp-block-navigation-item:hover
  .wp-block-navigation-item__content {
  background-color: rgba(0,0,0,0.04);
}

/* ---------- デスクトップ: 閉じるボタンは非表示 ---------- */
.wp-block-navigation__responsive-container-close {
  display: none;
}

/* ============================================================
   モバイル (～781px)
   レイアウト:
     ヘッダー1段目: ロゴ + サイトタイトル  (site-header-inner の flex)
     ヘッダー2段目: [ハンバーガー] nav  ← nav ごと折り返して左端
   メニュー開放時:
     画面全体を白い overlay で覆い、
     右上に × ボタン、その下にメニューリスト縦並び
     サブメニューは chevron クリックでアコーディオン開閉
============================================================ */
@media screen and (max-width: 781px) {

  /* ヘッダー内側: 折り返し許可 → 1段目:ロゴ、2段目:nav */
  .site-header-inner {
    flex-wrap: wrap;
    padding: 8px 0;
    gap: 0;
  }

  /* ロゴ+タイトルグループ: 1段目、全幅 */
  .site-branding-group {
    width: 100%;
    padding: 8px 0;
    justify-content: center !important;
  }

  /* nav: 2段目、全幅 */
  .wp-block-navigation {
    width: 100%;
    display: flex;
    align-items: center;
  }

  /* ハンバーガーボタン: 2段目の左端に表示 */
  .wp-block-navigation__responsive-container-open {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    order: -1;               /* nav 内で一番左 */
    flex-shrink: 0;
    padding: 5px;
    border: 1px solid #9292923b;
  }

  /* デスクトップ用メニューリストは隠す */
  .wp-block-navigation > .wp-block-navigation__responsive-container
    > .wp-block-navigation__responsive-close
    > .wp-block-navigation__responsive-dialog
    > .wp-block-navigation__container {
    display: none;
  }
  /* より広いセレクタで確実に隠す */
  .wp-block-navigation__container {
    display: none;
  }

  /* ============================================================
     overlay パネル本体
     構造:
       .wp-block-navigation__responsive-container  ← 画面全体
         .wp-block-navigation__responsive-close
           .wp-block-navigation__responsive-dialog  ← flex column
             #navCloseBtn  (× ボタン、右上)
             ul.wp-block-navigation__container  (メニューリスト)
  ============================================================ */
  .wp-block-navigation__responsive-container {
    display: none;
    position: fixed;
    inset: 0;
    background-color: var(--wp--background);
    z-index: 100000;
    overflow-y: auto;
  }
  .wp-block-navigation__responsive-container.has-modal-open {
    display: block;
  }

  /* responsive-close / dialog: サイズに影響させない通過ラッパー */
  .wp-block-navigation__responsive-container-close,
  .wp-block-navigation__responsive-dialog {
    display: contents; /* レイアウトに関与しない透過ラッパー */
  }

  /* × 閉じるボタン: overlay の右上に絶対配置 */
  #navCloseBtn {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    right: 0;
    background: none;
    border: none;
    cursor: pointer;
    padding: 16px;
    color: var(--wp--foreground);
    line-height: 1;
    z-index: 1;
  }

  /* overlay 内のメニューリスト: 縦並び、全幅表示
     padding-top で × ボタン (約56px) の下から始める */
  .wp-block-navigation__responsive-container .wp-block-navigation__container {
    display: flex !important;   /* display:none を強制上書き */
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 0;
    margin-top: 56px;           /* × ボタン高さ分を押し下げ */
    border-top: 1px solid rgba(0,0,0,0.08);
  }

  /* 各メニュー項目の区切り線 */
  .wp-block-navigation__responsive-container .wp-block-navigation-item {
    border-bottom: 1px solid rgba(0,0,0,0.08);
  }

  /* has-child: a + chevron ボタンを横並び、サブメニューは折り返して下に展開 */
  .wp-block-navigation__responsive-container .wp-block-navigation-item.has-child {
    flex-wrap: wrap;
  }

  /* a リンク */
  .wp-block-navigation__responsive-container .wp-block-navigation-item__content {
    padding: 14px 20px;
    font-size: 1rem;
    flex: 1;
    border-bottom: none;
  }

  /* chevron ボタン */
  .wp-block-navigation__responsive-container .wp-block-navigation-submenu__toggle {
    padding: 0 20px;
    flex-shrink: 0;
  }
  /* chevron の回転: is-open で 180deg */
  .wp-block-navigation__responsive-container
    .wp-block-navigation-submenu.is-open
    > .wp-block-navigation-submenu__toggle svg {
    transform: rotate(180deg);
  }

  /* 下線アニメーション無効 */
  .wp-block-navigation__responsive-container .wp-block-navigation-item__content::after {
    display: none;
  }

  /* サブメニュー: 初期は非表示 */
  .wp-block-navigation__responsive-container .wp-block-navigation__submenu-container {
    display: none;
    position: static;
    width: 100%;
    border: none;
    box-shadow: none;
    padding: 0;
    background-color: rgba(0,0,0,0.04);
  }
  /* is-open で展開 */
  .wp-block-navigation__responsive-container
    .wp-block-navigation-submenu.is-open
    > .wp-block-navigation__submenu-container {
    display: block;
  }

  /* サブメニュー内 a */
  .wp-block-navigation__responsive-container
    .wp-block-navigation__submenu-container
    .wp-block-navigation-item__content {
    padding: 12px 20px 12px 36px;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    flex: unset;
    width: 100%;
  }
  .wp-block-navigation__responsive-container
    .wp-block-navigation__submenu-container
    .wp-block-navigation-item:last-child
    .wp-block-navigation-item__content {
    border-bottom: none;
  }
}

/* ============================================================
   GLOBAL FOOTER
============================================================ */
#colophon { background: #1a2e45; color: #b0c0d0; }
.footer-widgets {
  max-width: var(--_global--container-max-width); margin: 0 auto; padding: 40px 15px 30px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px;
}
@media (max-width: 781px) { .footer-widgets { grid-template-columns: 1fr 1fr; gap: 24px; } }
@media (max-width: 480px) { .footer-widgets { grid-template-columns: 1fr; } }
.footer-widget-title { font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: #fff; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand-name { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.footer-brand-desc { font-size: 12px; line-height: 1.8; color: #8aaac0; margin-bottom: 14px; }
.footer-address { font-size: 11px; line-height: 2; color: #6a8aa0; }
.footer-nav li { margin-bottom: 6px; }
.footer-nav li a { font-size: 12px; color: #8aaac0; transition: color 0.15s; }
.footer-nav li a:hover { color: #fff; }
.site-info { border-top: 1px solid rgba(255,255,255,0.07); }
.site-info-inner { max-width: var(--_global--container-max-width); margin: 0 auto; padding: 14px 15px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-policy-links { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-policy-links li a { font-size: 11px; color: #6a8aa0; transition: color 0.15s; }
.footer-policy-links li a:hover { color: #b0c0d0; }
.site-copyright { font-size: 11px; color: #6a8aa0; }

/* Back To TOP トップへ戻るボタン */
.arrow-stack {
    display: flex;
    flex-direction: column;
    line-height: 1;
}
.arrow-fig {
    margin: 0 1px 8px 0;
    transform: rotate(-90deg);
    opacity: 0.5;
}
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background-color: #ddd;
    color: #333;
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    border-radius: 50%;
    text-decoration: none !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    opacity: 0.5;
    pointer-events: none;
    transition: opacity 0.5s ease, transform 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}
  @media screen and (max-width: 768px) {
    .back-to-top {
        width: 40px;
        height: 40px;
        font-size: 16px;
        bottom: 20px;
        right: 20px;
    }
  }