/**
 * RIFF テーマ - モバイルメニュー専用CSS（強制上書き版）
 * 
 * @package RIFF
 * @version 1.0.2
 */

/* CSS変数の定義 */
:root {
  --mobile-menu-bg: #ffffff;
  --mobile-menu-text: #333333;
  --mobile-menu-link-hover: #1e73be;
  --mobile-menu-toggle-color: #333333;
  --mobile-menu-overlay: rgba(0, 0, 0, 0.5);
  --mobile-menu-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  --mobile-menu-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   モバイルメニュートグルボタン
   ========================================================================== */

.mobile-menu-toggle {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  transition: var(--mobile-menu-transition);
  position: relative;
  z-index: 1001;
}

.mobile-menu-toggle:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--mobile-menu-link-hover);
  outline-offset: 2px;
  background-color: rgba(0, 0, 0, 0.05);
}

/* ハンバーガーアイコンのライン（アニメーション無効化） */
.mobile-menu-toggle span {
  display: block !important;
  width: 25px !important;
  height: 3px !important;
  background-color: var(--mobile-menu-toggle-color) !important;
  margin: 3px 0 !important;
  transition: none !important; /* アニメーションを無効化 */
  transform: none !important;
  transform-origin: center !important;
  border-radius: 2px !important;
  opacity: 1 !important;
}

.mobile-menu-toggle span:first-of-type {
  margin-top: 0 !important;
}

.mobile-menu-toggle span:last-of-type {
  margin-bottom: 0 !important;
}

/* アクティブ状態のアニメーションを完全無効化 */
.mobile-menu-toggle.active span:nth-of-type(1),
.mobile-menu-toggle.active span:nth-of-type(2),
.mobile-menu-toggle.active span:nth-of-type(3) {
  transform: none !important; /* アニメーションを無効化 */
  opacity: 1 !important; /* 全てのラインを表示 */
  background-color: var(--mobile-menu-toggle-color) !important;
}

/* スクリーンリーダー用テキスト */
.mobile-menu-toggle .screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   モバイルメニュー本体
   ========================================================================== */

/* デスクトップでは通常表示 */
.main-navigation {
  display: flex;
  align-items: center;
}

.main-navigation ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.main-navigation li {
  position: relative;
  margin-left: 30px;
}

.main-navigation li:first-child {
  margin-left: 0;
}

.main-navigation a {
  display: block;
  padding: 10px 0;
  color: var(--riff-header-text-color, #333);
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 0.5px;
  transition: var(--mobile-menu-transition);
  position: relative;
}

.main-navigation a:hover,
.main-navigation a:focus {
  color: var(--mobile-menu-link-hover);
  transform: translateY(-1px);
}

/* ==========================================================================
   モバイル表示時のスタイル（強制上書き）
   ========================================================================== */

@media (max-width: 991px) {
  /* モバイルメニュートグルを表示 */
  .mobile-menu-toggle {
    display: flex !important;
  }

  /* メインナビゲーションを隠す */
  .site-header .main-navigation {
    display: none !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100vh !important;
    background-color: var(--mobile-menu-bg) !important;
    z-index: 1000 !important;
    overflow-y: auto !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-20px) !important;
    transition: var(--mobile-menu-transition) !important;
    padding-top: 80px !important; /* ヘッダーの高さ分 */
  }

  /* アクティブ状態 */
  .site-header .main-navigation.active {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
  }

  /* メニューリスト */
  .site-header .main-navigation ul {
    flex-direction: column !important;
    align-items: stretch !important;
    padding: 20px !important;
    max-width: 400px !important;
    margin: 0 auto !important;
  }

  /* メニューアイテム（ボーダー完全削除） */
  .site-header .main-navigation li,
  .site-header .main-navigation li:first-child,
  .site-header .main-navigation li:last-child,
  .site-header .main-navigation li:nth-child(odd),
  .site-header .main-navigation li:nth-child(even) {
    margin: 0 !important;
    border: none !important;
    border-top: none !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
    box-shadow: none !important;
  }

  /* メニューリンク（ボーダー完全削除） */
  .site-header .main-navigation a,
  .site-header .main-navigation li a,
  .site-header .main-navigation ul li a {
    padding: 16px 0 !important;
    font-size: 16px !important;
    font-weight: 400 !important;
    text-transform: none !important;
    letter-spacing: 0 !important;
    color: var(--mobile-menu-text) !important;
    border: none !important;
    border-top: none !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
    box-shadow: none !important;
    transition: var(--mobile-menu-transition) !important;
    background: transparent !important;
  }

  .site-header .main-navigation a:hover,
  .site-header .main-navigation a:focus,
  .site-header .main-navigation li a:hover,
  .site-header .main-navigation li a:focus {
    color: var(--mobile-menu-link-hover) !important;
    background-color: rgba(30, 115, 190, 0.1) !important;
    padding-left: 15px !important;
    transform: none !important;
    border: none !important;
    border-top: none !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
    box-shadow: none !important;
  }

  /* サブメニュー */
  .site-header .main-navigation .sub-menu {
    position: static !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    box-shadow: none !important;
    background: transparent !important;
    padding: 0 !important;
    margin-left: 20px !important;
    border-left: 2px solid var(--mobile-menu-link-hover) !important;
    border-top: none !important;
    border-bottom: none !important;
    border-right: none !important;
  }

  .site-header .main-navigation .sub-menu li {
    border: none !important;
    border-top: none !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
  }

  .site-header .main-navigation .sub-menu a {
    padding: 12px 15px !important;
    font-size: 14px !important;
    color: rgba(51, 51, 51, 0.8) !important;
    border: none !important;
    border-top: none !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
    box-shadow: none !important;
  }

  .site-header .main-navigation .sub-menu a:hover,
  .site-header .main-navigation .sub-menu a:focus {
    color: var(--mobile-menu-link-hover) !important;
    background-color: rgba(30, 115, 190, 0.05) !important;
    border: none !important;
    border-top: none !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
    box-shadow: none !important;
  }
}

/* ==========================================================================
   ボディスクロール制御
   ========================================================================== */

.mobile-menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   アニメーション（簡略化）
   ========================================================================== */

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

/* ==========================================================================
   フォーカス管理
   ========================================================================== */

.main-navigation a:focus {
  outline: 2px solid var(--mobile-menu-link-hover);
  outline-offset: 2px;
}

/* ==========================================================================
   タブレット表示時の調整
   ========================================================================== */

@media (min-width: 768px) and (max-width: 991px) {
  .site-header .main-navigation ul {
    max-width: 500px !important;
    padding: 30px !important;
  }

  .site-header .main-navigation a {
    font-size: 18px !important;
    padding: 18px 0 !important;
  }
}

/* ==========================================================================
   小さなスマートフォン用の調整
   ========================================================================== */

@media (max-width: 480px) {
  .site-header .main-navigation {
    padding-top: 70px !important;
  }

  .site-header .main-navigation ul {
    padding: 15px !important;
  }

  .site-header .main-navigation a {
    padding: 14px 0 !important;
    font-size: 15px !important;
  }

  .mobile-menu-toggle {
    width: 40px !important;
    height: 40px !important;
  }

  .mobile-menu-toggle span {
    width: 22px !important;
    height: 2px !important;
  }
}

/* ==========================================================================
   ダークモード対応
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root {
    --mobile-menu-bg: #1a1a1a;
    --mobile-menu-text: #ffffff;
    --mobile-menu-toggle-color: #ffffff;
    --mobile-menu-overlay: rgba(0, 0, 0, 0.8);
  }

  .mobile-menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }
}

/* ==========================================================================
   アクセシビリティ対応
   ========================================================================== */

/* アニメーション無効化設定（強化） */
@media (prefers-reduced-motion: reduce) {
  .mobile-menu-toggle,
  .mobile-menu-toggle span,
  .main-navigation,
  .main-navigation a {
    transition: none !important;
    animation: none !important;
  }
}

/* ハイコントラスト対応 */
@media (prefers-contrast: high) {
  .main-navigation a {
    border: 1px solid transparent;
  }

  .main-navigation a:hover,
  .main-navigation a:focus {
    border-color: var(--mobile-menu-link-hover);
    background-color: var(--mobile-menu-link-hover);
    color: #ffffff;
  }

  .mobile-menu-toggle:focus {
    outline-width: 3px;
  }
}

/* ==========================================================================
   印刷時の調整
   ========================================================================== */

@media print {
  .mobile-menu-toggle {
    display: none !important;
  }

  .main-navigation {
    display: block !important;
    position: static !important;
    background: transparent !important;
    padding: 0 !important;
  }

  .main-navigation ul {
    flex-direction: row !important;
    padding: 0 !important;
  }

  .main-navigation a {
    color: #000 !important;
    font-size: 12px !important;
  }
}