/* ===========================================
   ナビゲーションコンポーネント（モバイルファースト）
   =========================================== */

/* ヘッダー（モバイル） */
header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 70px;
  background: rgba(0, 0, 0, 0.95);
  z-index: var(--z-fixed);
  padding: var(--spacing-sm-mobile) 0;
  border-bottom: 1px solid rgba(212, 175, 55, 0.3);
  display: flex;
  align-items: center;
}

nav {
  display: flex;
  align-items: center;
  max-width: 100%;
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0 1rem;
}

.logo {
  color: #d4af37;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo img {
  height: 35px;
  width: auto;
  display: block;
  object-fit: contain;
}

.logo-text {
  display: inline;
  margin-left: 0.8rem;
  color: #d4af37;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 1px;
  white-space: nowrap;
}

/* デスクトップナビゲーション（初期表示は非表示） */
.nav-links {
  display: none;
  list-style: none;
  gap: var(--spacing-xs);
  position: relative;
  align-items: center;
}

.nav-links > li {
  position: relative;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.8px;
  transition: all 0.3s ease;
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  min-height: 44px;
  min-width: 44px;
}

.nav-links a::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(212, 175, 55, 0.15),
    transparent
  );
  transition: left 0.6s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-gold), #f4d03f);
  transition: all 0.4s ease;
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-links > li > a:hover {
  color: #d4af37;
  background: rgba(212, 175, 55, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.2);
}

.nav-links > li > a:hover::before {
  left: 100%;
}

.nav-links > li > a:hover::after {
  width: 80%;
}

.nav-links > li > a.active {
  color: #d4af37;
  background: rgba(212, 175, 55, 0.12);
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.3);
}

.nav-links > li > a.active::after {
  width: 80%;
}

/* ドロップダウンメニュー */
.dropdown {
  position: absolute;
  top: 95%;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: rgba(0, 0, 0, 0.96);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: 1.2rem;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: 1px solid rgba(212, 175, 55, 0.4);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(212, 175, 55, 0.1);
  z-index: var(--z-dropdown);
  pointer-events: none;
  will-change: opacity, transform, visibility;
}

/* 完全連続ホバーエリア - オーバーラップ設計 */
.dropdown::before {
  content: "";
  position: absolute;
  top: -15px;
  left: -40px;
  right: -40px;
  height: 20px;
  background: transparent;
  z-index: 2;
  pointer-events: auto;
}

/* ドロップダウンの三角形指示器 */
.dropdown::after {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 7px solid rgba(0, 0, 0, 0.96);
  z-index: 10;
}

.dropdown a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  font-weight: 400;
  padding: 0.9rem 1.2rem;
  border-radius: 8px;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border-left: 3px solid transparent;
  margin-bottom: 0.3rem;
  position: relative;
  overflow: hidden;
}

.dropdown a:last-child {
  margin-bottom: 0;
}

.dropdown a::before {
  content: "";
  position: absolute;
  left: -100%;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(212, 175, 55, 0.1),
    transparent
  );
  transition: left 0.5s ease;
}

.dropdown a:hover {
  color: #d4af37;
  background: rgba(212, 175, 55, 0.15);
  border-left-color: #d4af37;
  transform: translateX(6px);
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.2);
}

.dropdown a:hover::before {
  left: 100%;
}

/* モバイルメニュートグル（デフォルト表示） */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
  z-index: 1000;
  position: relative;
  transition: all 0.3s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.hamburger-line {
  width: 25px;
  height: 3px;
  background-color: #d4af37;
  display: block;
  transition: all 0.3s ease;
  transform-origin: center;
  border-radius: 2px;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(200px, 65vw);
  max-width: 200px;
  height: 100vh;
  height: 100dvh; /* Dynamic viewport height */
  background: rgba(0, 0, 0, 0.95);
  z-index: var(--z-modal);
  transition: right var(--transition-normal);
  border-left: 1px solid rgba(212, 175, 55, 0.3);
  box-shadow: var(--shadow-card);
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  box-sizing: border-box;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.mobile-menu-title {
  color: #d4af37;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.mobile-menu-close {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  transition: color 0.3s ease;
}

.mobile-menu-close:hover {
  color: #d4af37;
}

.mobile-menu-nav {
  display: flex;
  flex-direction: column;
  padding: 0;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.mobile-menu-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  padding: 1rem 1rem;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  min-height: 48px;
  touch-action: manipulation;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-menu-link:hover,
.mobile-menu-link:focus {
  color: #d4af37;
  background: rgba(212, 175, 55, 0.1);
  border-left: 3px solid #d4af37;
}

.mobile-menu-link:last-child {
  border-bottom: none;
}

/* ===============================================
   タブレット以上で適用（モバイルファースト）
   =============================================== */

/* タブレット: モバイルメニューの幅を広げる */
@media (min-width: 768px) and (max-width: 1023px) {
  .mobile-menu {
    width: min(280px, 70vw);
    max-width: 280px;
  }
}

/* タブレットではモバイルレイアウトを維持（1024px以上でデスクトップに切り替え） */
@media (min-width: 1024px) {
  /* --bp-lg デスクトップ以上のみ */
  header {
    height: 80px !important;
    padding: 0 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
  }

  nav {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 2rem !important;
    justify-content: flex-start !important;
    margin: 0 !important;
  }

  .logo {
    font-size: 1.5rem !important;
    writing-mode: horizontal-tb !important;
    text-orientation: mixed !important;
    height: auto !important;
    width: auto !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    line-height: normal !important;
    white-space: nowrap !important;
  }

  /* 縦書きスタイルを強制無効化 */
  .logo,
  .logo * {
    writing-mode: horizontal-tb !important;
    text-orientation: mixed !important;
  }

  /* デスクトップ版ロゴ画像サイズ */
  .logo img {
    height: 45px !important;
  }

  /* デスクトップでは企業名をJavaScriptで動的制御（デフォルトは非表示） */
  .logo-text {
    display: none;
    transition: opacity 0.3s ease;
  }

  /* デスクトップナビゲーション表示 */
  .nav-links {
    display: flex !important;
    gap: 0.5rem !important;
    margin-left: auto !important;
  }

  .nav-links a {
    padding: 0.6rem 1rem !important;
    font-size: 0.85rem !important;
  }

  /* モバイルメニュー非表示 */
  .mobile-menu-toggle {
    display: none;
  }

  /* モバイルナビゲーション完全非表示 */
  .mobile-menu-nav {
    display: none !important;
  }

  /* ドロップダウンメニューの表示制御 */
  .nav-links > li:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(5px);
    pointer-events: auto;
  }
}

/* 大画面（1280px以上）でナビリンクを元のサイズに戻す */
@media (min-width: 1280px) {
  .nav-links a {
    padding: 0.8rem 1.2rem !important;
    font-size: 0.95rem !important;
  }
}

@media (min-width: 1440px) {
  /* --bp-xl */
  nav {
    max-width: var(--container-xl);
  }
}

/* ===============================================
   言語切り替えボタン（Language Switcher）
   固定フローティングボタン - 画面右上に常に表示
   =============================================== */

/* モバイル・タブレット・デスクトップ共通: 画面右上に固定表示 */
.language-switcher {
  display: block;
  position: fixed;
  top: 80px; /* ヘッダー（70px）の少し下 */
  right: 15px;
  z-index: 1035; /* ヘッダー(1030)より上、モーダル(1050)より下 */
}

.language-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 2px solid rgba(212, 175, 55, 0.5);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  padding: 0;
}

.language-btn i {
  font-size: 1.2rem;
  color: #d4af37;
  transition: transform 0.3s ease;
}

.language-btn:hover {
  background: rgba(212, 175, 55, 0.2);
  border-color: #d4af37;
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

.language-btn:hover i {
  transform: rotate(20deg);
}

.language-btn:active {
  transform: scale(1.05);
}

/* テキストは常に非表示（フローティングボタンのため） */
.lang-text {
  display: none;
}

/* デスクトップ: 1024px以上で位置とサイズを調整 */
@media (min-width: 1024px) {
  .language-switcher {
    top: 90px; /* ヘッダー（80px）の少し下 */
    right: 20px;
  }

  .language-btn {
    width: 50px;
    height: 50px;
  }

  .language-btn i {
    font-size: 1.3rem;
  }
}

/* 1440px以上: 少し大きめのボタン */
@media (min-width: 1440px) {
  .language-switcher {
    top: 95px;
    right: 25px;
  }

  .language-btn {
    width: 55px;
    height: 55px;
  }

  .language-btn i {
    font-size: 1.4rem;
  }
}

/* モバイルメニュー内の言語切り替えリンクは非表示（固定フローティングボタンを使用） */
#mobileLangToggle {
  display: none;
}