/* header.css */

/* ── ヘッダー全体 ────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--gutter-pc);
}

/* ── ロゴ ────────────────────────────────────────── */
.site-header__logo a {
  display: flex;
  align-items: center;
}
.site-header__logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
}
/* SP用ロゴ差し替え */
.site-header__logo .logo-sp { display: none; }

/* ── PC ナビ ─────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0;
}
.site-nav__item a {
  display: block;
  padding: 0 10px;  /* 16px → 10px */
  font-size: 12px;  /* 13px → 12px */
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-text);
  line-height: 64px;
  transition: color var(--transition), background var(--transition);
}
.site-nav__item a:hover,
.site-nav__item a[aria-current="page"] {
  color: var(--color-primary);
  background: rgba(200, 22, 29, 0.05);
}
.site-nav__item--contact a {
  background: var(--color-primary);
  color: var(--color-white);
  padding-inline: 14px;  /* 20px → 14px */
  line-height: 36px;
  border-radius: 2px;
  margin-left: 6px;  /* 8px → 6px */
  align-self: center;
}
.site-nav__item--contact a:hover {
  background: var(--color-link);
  color: var(--color-white);
}

/* ── SPメニューボタン ────────────────────────────── */
.site-header__menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  z-index: 200;
}
.site-header__menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ハンバーガー → ✕ */
.site-header__menu-btn[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header__menu-btn[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.site-header__menu-btn[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── SPドロワー ──────────────────────────────────── */
.site-nav--sp {
  display: block;
  position: fixed;
  top: 0;
  right: 0;
  width: 260px;
  height: 100dvh;
  background: var(--color-white);
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  padding-top: 64px;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 150;
}
.site-nav--sp.is-open {
  transform: translateX(0);
}
.site-nav--sp .site-nav__item a {
  line-height: 1;
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 700;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  color: var(--color-text);
  transition: color var(--transition), background var(--transition);
}
.site-nav--sp .site-nav__item a:hover {
  color: var(--color-primary);
  background: rgba(200, 22, 29, 0.04);
  opacity: 1;
}
.site-nav--sp .site-nav__item a[aria-current="page"] {
  color: var(--color-primary);
}
.site-nav--sp .site-nav__item--contact a {
  margin: 20px 16px 0;
  border-radius: 4px;
  justify-content: center;
  line-height: 48px;
  padding: 0;
  border-bottom: none;
}

/* オーバーレイ */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 140;
}
.nav-overlay.is-open {
  display: block;
}
/* ── ドロワーヘッダー ────────────────────────────── */
.site-nav--sp__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 56px;
  border-bottom: 1px solid var(--color-border);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
}
.site-nav--sp__logo img {
  height: 28px;
  width: auto;
}


/* ── レスポンシブ ────────────────────────────────── */
@media (max-width: 740px) {
  .site-header__inner {
    padding-inline: var(--gutter-sp);
    height: 56px;
  }
  .site-nav--pc { display: none; }
  .site-header__menu-btn { display: flex; }
  .site-header__logo .logo-pc { display: none; }
  .site-header__logo .logo-sp { display: block; }
  .site-header__logo img { height: 32px; }

/* ── ドロワー閉じるボタン ───────────────────────── */
.site-nav--sp__close {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0;
  width: 36px;
  height: 36px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  position: relative;
}
.site-nav--sp__close span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  position: absolute;
}
.site-nav--sp__close span:nth-child(1) {
  transform: rotate(45deg);
}
.site-nav--sp__close span:nth-child(2) {
  transform: rotate(-45deg);
}

/* ── お問い合わせボタン文字色修正 ───────────────── */
.site-nav--sp .site-nav__item--contact a {
  color: var(--color-white) !important;
}
.site-nav--sp .site-nav__item--contact a:hover {
  background: #6b0f17 !important;
  opacity: 1;
}
}
@media (min-width: 741px) {
  .site-header__menu-btn {
    display: none !important;
  }
  .site-nav--sp {
    display: none !important;
  }
}