/* ════════════════════════════════
   ヘッダー — ラグジュアリー・フェミニン
   ナビは独立領域（FVにオーバーレイしない）
   ════════════════════════════════ */

/* ── サイトヘッダー（非オーバーレイ） ── */
.site-header {
  position: relative;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid rgba(109,46,70,0.06);
}
/* スクロール時のみ追従する場合の sticky 設定 */
.site-header.is-scrolled {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(45,31,45,0.06);
}

.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
@media (min-width: 768px) {
  .header__inner { height: 80px; }
}

/* ── ロゴ ── */
.header__logo a {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-berry);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.05em;
}
.header__logo img {
  height: 36px;
  width: auto;
}
@media (min-width: 768px) {
  .header__logo a { font-size: var(--fs-xl); }
  .header__logo img { height: 40px; }
}

/* ── デスクトップナビ ── */
.header__nav {
  display: none;
  align-items: center;
  gap: 2rem;
}
@media (min-width: 1024px) {
  .header__nav { display: flex; }
}

.header__nav-item {
  position: relative;
}
.header__nav-link {
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--color-text);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.5rem 0;
  letter-spacing: 0.04em;
  position: relative;
}
.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.header__nav-link:hover { color: var(--color-berry); }
.header__nav-link:hover::after { transform: scaleX(1); }
.header__nav-link svg {
  width: 12px;
  height: 12px;
}

/* ── ドロップダウン ── */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: -1rem;
  padding-top: 0.75rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.3s ease;
}
.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.header__dropdown-inner {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(45,31,45,0.1);
  border: 1px solid rgba(109,46,70,0.06);
  padding: 0.75rem 0;
  min-width: 200px;
}
.header__dropdown-link {
  display: block;
  padding: 0.625rem 1.5rem;
  font-size: var(--fs-sm);
  color: var(--color-text);
  letter-spacing: 0.02em;
  transition: all var(--transition);
}
.header__dropdown-link:hover {
  background: var(--color-cream);
  color: var(--color-berry);
  padding-left: 1.75rem;
}

/* ── ヘッダー右部 ── */
.header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.header__line-btn {
  display: none;
}
@media (min-width: 768px) {
  .header__line-btn { display: inline-flex; }
}

/* ── ハンバーガー ── */
.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-dark);
}
@media (min-width: 1024px) {
  .mobile-menu-toggle { display: none; }
}

/* ── モバイルメニュー ── */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  visibility: hidden;
  opacity: 0;
  transition: visibility 0s 0.3s, opacity var(--transition);
}
.mobile-menu.is-open {
  visibility: visible;
  opacity: 1;
  transition: visibility 0s, opacity var(--transition);
}
.mobile-menu__overlay {
  position: absolute;
  inset: 0;
  background: rgba(45,31,45,0.3);
  backdrop-filter: blur(4px);
}
.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background: var(--color-white);
  box-shadow: -8px 0 40px rgba(45,31,45,0.12);
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
}
.mobile-menu.is-open .mobile-menu__panel {
  transform: translateX(0);
}
.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-light);
}
.mobile-menu__title {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-berry);
  letter-spacing: 0.05em;
}
.mobile-menu__close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-muted);
  border-radius: 50%;
  transition: background var(--transition);
}
.mobile-menu__close:hover { background: var(--color-light); }
.mobile-menu__nav {
  flex: 1;
  padding: 1rem 1.25rem;
  overflow-y: auto;
}
.mobile-menu__link {
  display: block;
  padding: 0.875rem 1rem;
  font-size: var(--fs-base);
  color: var(--color-text);
  border-radius: 8px;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}
.mobile-menu__link:hover {
  background: var(--color-cream);
  color: var(--color-berry);
}
.mobile-menu__sublink {
  display: block;
  padding: 0.5rem 1rem 0.5rem 2rem;
  font-size: var(--fs-sm);
  color: var(--color-muted);
  border-radius: 8px;
  transition: all var(--transition);
}
.mobile-menu__sublink:hover {
  background: var(--color-cream);
  color: var(--color-berry);
}
.mobile-menu__footer {
  padding: 1.25rem;
  border-top: 1px solid var(--color-light);
}
.mobile-menu__footer .btn { width: 100%; }