/* ============================================================
   Hogwarts Legacy 共通テーマ "Magic Tome Style"
   - HL系ページの共通レイアウト（ハンバーガー / nav-panel / アコーディオン）
   - 既存HLデザイン（暗茶 #17130f / ゴールド #d8b56a / ブロンズ #7f6030 / クリーム #eadfca）を踏襲
   - PC幅(>=768px) では nav-panel を「左サイドバー固定」レイアウト（FL/P5Rと同構造、色のみHL）
   - 各ページの <style> 内のナビ関連CSSを削除し、本ファイルに集約
   ============================================================ */

/* ============================================================
   Hamburger Menu (SP)
   ============================================================ */
.hamburger-btn {
  position: fixed;
  top: 16px;
  right: 24px;
  z-index: 1001;
  width: 44px;
  height: 44px;
  background: #17130f;
  border: 1px solid #5f4928;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all 0.3s;
}
.hamburger-btn:hover { border-color: #d8b56a; }
.hamburger-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: #f1d890;
  border-radius: 2px;
  transition: all 0.3s;
}
.hamburger-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger-btn.active span:nth-child(2) { opacity: 0; }
.hamburger-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   Nav Overlay (SP)
   ============================================================ */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}
.nav-overlay.active { opacity: 1; visibility: visible; }

/* ============================================================
   Nav Panel (SP: 右からスライドイン / PC: 左サイドバー固定)
   ============================================================ */
.nav-panel {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100%;
  background: rgba(21, 18, 13, 0.96);
  z-index: 1000;
  padding: 80px 24px 24px;
  transition: right 0.3s ease;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.5);
  overflow-y: auto;
  border-left: 1px solid #5f4928;
}
.nav-panel.active { right: 0; }

.nav-panel-title {
  font-size: 0.75rem;
  color: #8f826c;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #4c3b24;
}

.nav-section-label {
  font-size: 0.65rem;
  color: #8f826c;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 20px;
  margin-bottom: 8px;
  padding-top: 12px;
  border-top: 1px solid #4c3b24;
}

/* ===========================================================
   Nav Page Group (このページ内アンカージャンプ用)
   =========================================================== */
.nav-page-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}
.nav-page-group .nav-link {
  font-size: 0.85rem;
  padding: 9px 12px;
}

/* ============================================================
   Nav Link
   ============================================================ */
.nav-link {
  display: block;
  padding: 10px 14px;
  margin-bottom: 2px;
  color: #d8c9ad;
  text-decoration: none;
  border: 1px solid #3f3120;
  background: #18140f;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.nav-link:hover { background: #241c14; color: #f1d890; border-color: #8d6a2e; }
.nav-link.current {
  background: #d8b56a22;
  color: #f1d890;
  font-weight: bold;
  border-left: 3px solid #d8b56a;
  border-color: #d8b56a;
}
.nav-link-desc { font-size: 0.72rem; color: #8f826c; margin-top: 2px; }

/* ============================================================
   Game Accordion in Nav
   ============================================================ */
.nav-accordion { margin-top: 4px; margin-bottom: 4px; border-radius: 8px; overflow: hidden; }
.nav-accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 11px 14px;
  margin: 0;
  background: #17130f;
  border: 1px solid #5f4928;
  border-radius: 8px;
  color: #f1d890;
  font-size: 0.92rem;
  font-weight: bold;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s;
}
.nav-accordion-header:hover { background: #241c14; border-color: #d8b56a; }
.nav-accordion-header .nav-accordion-chevron { font-size: 0.8rem; transition: transform 0.3s; }
.nav-accordion[data-open="true"] > .nav-accordion-header .nav-accordion-chevron { transform: rotate(180deg); }
.nav-accordion-body { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.nav-accordion[data-open="true"] > .nav-accordion-body { max-height: 1000px; }
.nav-accordion-body-inner { padding: 6px 0 4px 12px; display: flex; flex-direction: column; gap: 2px; }
.nav-accordion-body-inner .nav-link { font-size: 0.85rem; padding: 8px 12px; }

/* FL テーマ（青系） - HL ページからFLへの導線用色付け */
.nav-accordion[data-game="fl"] > .nav-accordion-header {
  color: #ffd700;
  background: #16213e;
  border-color: #1e2a4a;
}
.nav-accordion[data-game="fl"] > .nav-accordion-header:hover {
  background: #1e2a4a;
  border-color: #ffd700;
}
.nav-accordion[data-game="fl"] .nav-link:hover {
  background: #1e2a4a;
  color: #ffd700;
  border-color: #ffd70044;
}
.nav-accordion[data-game="fl"] .nav-link.current {
  background: #ffd70022;
  color: #ffd700;
  border-left-color: #ffd700;
  border-color: #ffd700;
}

/* P5R テーマ（赤/暗赤） - HL ページからP5Rへの導線用色付け */
.nav-accordion[data-game="p5r"] > .nav-accordion-header {
  color: #ff6b6b;
  background: #2D0808;
  border-color: #5a1414;
}
.nav-accordion[data-game="p5r"] > .nav-accordion-header:hover {
  background: #3a0a0a;
  border-color: #E60012;
}
.nav-accordion[data-game="p5r"] .nav-link:hover {
  background: #3a0a0a;
  color: #ff6b6b;
  border-color: #5a1414;
}
.nav-accordion[data-game="p5r"] .nav-link.current {
  background: #E6001222;
  color: #ff6b6b;
  border-left-color: #E60012;
  border-color: #E60012;
}

/* HL テーマ（金/暗茶） */
.nav-accordion[data-game="hogwartslegacy"] > .nav-accordion-header {
  color: #f1d890;
  background: #17130f;
  border-color: #5f4928;
}
.nav-accordion[data-game="hogwartslegacy"] > .nav-accordion-header:hover {
  background: #241c14;
  border-color: #d8b56a;
}
.nav-accordion[data-game="hogwartslegacy"] .nav-link:hover {
  background: #241c14;
  color: #f1d890;
  border-color: #d8b56a44;
}
.nav-accordion[data-game="hogwartslegacy"] .nav-link.current {
  background: #d8b56a22;
  color: #f1d890;
  border-left-color: #d8b56a;
  border-color: #d8b56a;
}

/* ============================================================
   自ゲーム / 他ゲーム の視覚区別（PC・SP共通）
   - 自ゲーム = data-current-game="true": 強調（左border + 背景）
   - 他ゲーム = それ以外: 弱める（透明度低・hoverで戻す）
   ============================================================ */
.nav-accordion[data-current-game="true"] {
  border-left: 4px solid #d8b56a;
  background: rgba(216, 181, 106, 0.06);
  border-radius: 0 8px 8px 0;
  padding: 4px 4px 6px 8px;
  margin-left: 0;
}
.nav-accordion[data-current-game="true"] > .nav-accordion-header {
  background: #241c14;
  border-color: #d8b56a66;
}
.nav-accordion:not([data-current-game="true"]) {
  opacity: 0.55;
  transition: opacity 0.2s ease;
}
.nav-accordion:not([data-current-game="true"]):hover,
.nav-accordion:not([data-current-game="true"])[data-open="true"] {
  opacity: 1;
}

/* ============================================================
   PC幅 (>=768px): 左サイドバー固定レイアウト（FL/P5Rと同構造）
   - body 全体を 296px (サイドバー幅 280px + 16px) 左側に余白
   - nav-panel を viewport 左端に常時固定表示
   - 自ゲームは展開、他ゲームはトグル可（data-open に従う）
   ============================================================ */
@media (min-width: 768px) {
  .hamburger-btn { display: none !important; }
  .nav-overlay { display: none !important; }

  body {
    padding-top: 16px !important;
    padding-left: 296px !important; /* サイドバー幅 280px + 16px の余白 */
    padding-right: 16px !important;
    padding-bottom: 16px !important;
  }

  .nav-panel {
    position: fixed;
    top: 0;
    left: 0;
    right: auto;
    width: 280px;
    height: 100vh;
    max-height: 100vh;
    overflow-y: auto;
    margin: 0;
    padding: 16px 14px;
    background: #17130f;
    border: 2px solid #d8b56a;
    border-top: none;
    border-bottom: none;
    border-left: none;
    border-radius: 0;
    box-shadow: 4px 0 0 rgba(216, 181, 106, 0.27);
    z-index: 100;
    display: block;
  }
  .nav-panel.active { right: auto; }

  /* SP用タイトルはPCでは非表示 */
  .nav-panel-title { display: none; }

  .nav-section-label {
    display: block;
    margin-top: 14px;
    margin-bottom: 6px;
    padding-top: 10px;
    font-size: 0.7rem;
    color: #8f826c;
    letter-spacing: 1px;
    border-top: 1px solid #4c3b24;
  }

  /* PC: 詳細テキスト非表示 */
  .nav-link-desc { display: none; }

  /* PC: nav-panel直下のlink/accordion/page-groupは縦並び（フル幅） */
  .nav-panel > .nav-link,
  .nav-panel > .nav-accordion,
  .nav-panel > .nav-page-group {
    display: block;
    width: 100%;
  }

  /* PC: アコーディオン内リンクは縦並びでフル幅 */
  .nav-accordion-body-inner {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
    padding: 8px 0 4px;
  }
  .nav-accordion-body-inner .nav-link {
    display: block;
    width: 100%;
    white-space: normal;
    padding: 8px 14px;
  }
}