/* =========================
ヘッダー全体
========================= */
.rhb-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #ffffff;
  z-index: 999;
}

/* =========================
内部レイアウト
========================= */
.rhb-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  gap: 20px;
  flex-wrap: nowrap;
}

/* =========================
ロゴ
========================= */
.rhb-logo {
  flex-shrink: 0;
}

.rhb-logo img {
  max-height: 60px;
  width: auto;
  display: block;
}

/* =========================
メニュー
========================= */
.rhb-menu {
  flex-grow: 1;
}

.rhb-menu ul {
  display: flex;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
  white-space: nowrap;
  justify-content: center;
}

.rhb-menu li {
  display: block;
}

.rhb-menu a {
  text-decoration: none;
  font-size: 18px;
  display: block;
  padding: 8px 10px;
  transition: 0.2s;
}

/* =========================
お問い合わせボタン
========================= */
.rhb-contact {
  flex-shrink: 0;
  padding: 10px 20px;
  text-decoration: none;
  display: inline-block;
  font-size: 18px;
  white-space: nowrap;
  border-radius: 2px; /* 角丸 R5 */
}

/* =========================
ハンバーガーボタン
========================= */
.rhb-toggle {
  display: none;
  font-size: 28px;
  cursor: pointer;
  text-align: center;
  line-height: 1;
  user-select: none;
  position: relative;
  z-index: 1002; /* ✕ボタンは最前面 */
}

.rhb-toggle span {
  display: block;
}

/* =========================
レスポンシブ
========================= */
@media (max-width: 900px) {
  /* 内部レイアウト */
  .rhb-inner {
    flex-direction: column;
    align-items: center;
    position: relative;
  }

  /* ロゴ */
  .rhb-logo {
    text-align: center;
    margin-bottom: 5px;
  }

  /* ☰ / ✕ボタン */
  .rhb-toggle {
    display: block;
    margin-bottom: 10px;
    text-align: center;
  }

  .rhb-toggle .open {
    display: block; /* 最初は☰のみ表示 */
  }

  .rhb-toggle .close {
    display: none; /* 最初は✕非表示 */
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1003; /* 常に最前面 */
  }

  /* メニュー */
  .rhb-menu {
    display: none;
    position: absolute;
    top: 70px; /* ロゴ＋☰/✕の下 */
    left: 0;
    width: 100%;
    background: #ffffff;
    text-align: center;
    z-index: 1000; /* メニューは✕の下 */
  }

  .rhb-menu ul {
    flex-direction: column;
    gap: 10px;
    padding: 60px 0;
  }

  .rhb-menu.active {
    display: block;
  }

  /* メニューリンク */
  .rhb-menu a {
    font-size: 18px;
  }

  /* お問い合わせ非表示 */
  .rhb-contact {
    display: none;
  }
}