/* ===========================
   🎯 CSS変数ベースレスポンシブシステム
   =========================== */

/* レイアウト制御用CSS変数 */
:root {
  --layout-mode: desktop; /* desktop | mobile */
  
  /* 統一されたZ-index管理 */
  --z-background: 1;
  --z-content: 10;
  --z-character: 50;
  --z-modal: 100;
  --z-menu: 1800;
  --z-footer: 900;
  --z-overlay: 1000;
}

/* ===========================
   🖥️ デスクトップレイアウト
   =========================== */

[data-layout="desktop"] .book-spread-container {
  display: grid !important;
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
  visibility: visible;
  z-index: var(--z-content);
  transition: none;
}

[data-layout="desktop"] .detail-panel {
  display: none !important;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: none;
}

[data-layout="desktop"] .left-page,
[data-layout="desktop"] .right-page {
  display: flex;
  opacity: 1;
  visibility: visible;
}

[data-layout="desktop"] .background-char-image {
  display: block;
  opacity: 1;
  visibility: visible;
}

[data-layout="desktop"] .cutin-face-right-page {
  display: block;
  opacity: 1;
  visibility: visible;
}

[data-layout="desktop"] .cutin-effect-container {
  display: block;
  visibility: visible;
}

[data-layout="desktop"] #scrollInfo {
  display: block;
  opacity: 1;
  visibility: visible;
}

[data-layout="desktop"] #scrollInfoMobile {
  display: none;
  visibility: hidden;
}

[data-layout="desktop"] html,
[data-layout="desktop"] body {
  overflow-y: hidden;
}

/* ===========================
   📱 タブレットレイアウト
   =========================== */

[data-layout="tablet"] .book-spread-container {
  display: none;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

[data-layout="tablet"] .detail-panel {
  display: block;
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
  visibility: visible;
  z-index: var(--z-content);
  
  /* タブレット用レイアウト設定 */
  position: static;
  width: 100%;
  margin-top: 10px;
  margin-bottom: 60px;
  padding: 5px 0 0 0;
  background: #ffffff;
  box-shadow: none;
  border: none;
}

[data-layout="tablet"] .left-page,
[data-layout="tablet"] .right-page {
  display: none;
  opacity: 0;
  visibility: hidden;
}

[data-layout="tablet"] .background-char-image,
[data-layout="tablet"] .cutin-face-right-page,
[data-layout="tablet"] .cutin-effect-container {
  display: none;
  visibility: hidden;
}

[data-layout="tablet"] #scrollInfo {
  display: none;
  visibility: hidden;
}

[data-layout="tablet"] #scrollInfoMobile {
  display: block;
  opacity: 1;
  visibility: visible;
}

[data-layout="tablet"] html,
[data-layout="tablet"] body {
  overflow-y: auto;
}

/* ===========================
   📱 モバイルレイアウト
   =========================== */

[data-layout="mobile"] .book-spread-container {
  display: none;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

[data-layout="mobile"] .detail-panel {
  display: block !important;
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
  visibility: visible;
  z-index: var(--z-content);
  
  /* モバイル用レイアウト設定 */
  position: static;
  width: 100%;
  margin-top: 10px;
  margin-bottom: 60px;
  padding: 5px 0 0 0;
  background: #ffffff;
  box-shadow: none;
  border: none;
}

[data-layout="mobile"] .left-page,
[data-layout="mobile"] .right-page {
  display: none;
  opacity: 0;
  visibility: hidden;
}

[data-layout="mobile"] .background-char-image,
[data-layout="mobile"] .cutin-face-right-page,
[data-layout="mobile"] .cutin-effect-container {
  display: none;
  visibility: hidden;
}

[data-layout="mobile"] #scrollInfo {
  display: none;
  visibility: hidden;
}

[data-layout="mobile"] #scrollInfoMobile {
  display: block;
  opacity: 1;
  visibility: visible;
}

[data-layout="mobile"] html,
[data-layout="mobile"] body {
  overflow-y: auto;
}

/* ===========================
   📱 タブレット専用コンテンツスタイル
   =========================== */

/* タブレット時の詳細スクロールコンテナ */
html[data-layout="tablet"] .detail-panel .detail-scroll-container {
  display: block;
  padding: 0;
  width: 100%;
  position: static;
  perspective: none;
  height: auto;
  min-height: auto;
  max-height: none;
  overflow-y: auto;
  visibility: visible;
  opacity: 1;
}

/* タブレット時のマニュアルブロック */
html[data-layout="tablet"] .detail-panel .manual-block[data-page-id] {
  display: block;
  margin-bottom: 1rem;
  max-width: 800px; /* タブレット用の広い幅 */
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  padding: 20px;
  width: 100%;
  box-sizing: border-box;
  min-height: 150px;
  height: auto;
  visibility: visible;
  opacity: 1;
}

[data-layout="tablet"] .entry-title-block {
  max-width: 800px; /* タブレット用の広い幅 */
  margin: 20px auto 15px auto;
  text-align: center;
  background: #f0f0f0;
  padding: 15px 20px;
  border-left: 4px solid #e60033;
  border-radius: 0 8px 8px 0;
  font-weight: bold;
  font-size: 20px;
  color: #333;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  display: block;
  width: 100%;
  box-sizing: border-box;
}

/* ===========================
   📱 モバイル専用コンテンツスタイル
   =========================== */

[data-layout="mobile"] .manual-card {
  display: block;
  position: static;
  width: 100%;
  height: auto;
  background: #ffffff;
  color: #333;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid rgba(0,0,0,0.1);
  overflow: visible;
  box-sizing: border-box;
  opacity: 1;
  margin-bottom: 15px;
  line-height: 1.6;
  font-size: 14px;
  z-index: var(--z-content);
}

/* モバイルレイアウト時のマニュアルブロック - data-page-id属性ベース */
html[data-layout="mobile"] .detail-panel .manual-block[data-page-id] {
  display: block;
  margin-bottom: 1rem;
  max-width: 600px; /* タブレット用の幅制限 */
  margin-left: auto;
  margin-right: auto;
  text-align: left;
  padding: 15px;
  width: 100%;
  box-sizing: border-box;
  min-height: 120px;
  height: auto;
  visibility: visible;
  opacity: 1;
}

[data-layout="mobile"] .entry-title-block {
  max-width: 600px; /* manual-blockと同じ幅制限 */
  margin: 15px auto 10px auto;
  text-align: center;
  background: #f0f0f0;
  padding: 12px 15px;
  border-left: 4px solid #e60033;
  border-radius: 0 6px 6px 0;
  font-weight: bold;
  font-size: 18px;
  color: #333;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  display: block;
  width: 100%;
  box-sizing: border-box;
}

[data-layout="mobile"] .manual-image {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: 1rem auto;
  border-radius: 8px;
  object-fit: contain;
  order: 2;
  align-self: center;
}

[data-layout="mobile"] .manual-text {
  width: 100%;
  text-align: left;
  order: 1;
  margin-bottom: 0.5rem;
  max-width: 600px;
}

[data-layout="mobile"] .manual-text h2 {
  font-size: 1.1rem;
  color: #333;
  margin: 0.4rem 0;
  word-break: break-word;
  font-weight: 500;
  background: transparent;
  padding: 6px 0 6px 10px;
  border-left: 3px solid #ff3333;
  border-radius: 0;
}

[data-layout="mobile"] .manual-text p {
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: pre-line;
}

/* モバイルレイアウト時の詳細スクロールコンテナ - data-page-id要素含有時に強制表示 */
html[data-layout="mobile"] .detail-panel .detail-scroll-container:has([data-page-id]) {
  display: block;
  padding: 0;
  width: 100%;
  position: static;
  perspective: none;
  height: auto;
  min-height: auto;
  max-height: none;
  overflow-y: auto;
  visibility: visible;
  opacity: 1;
}

/* フォールバック：:has()未対応ブラウザ用 */
html[data-layout="mobile"] .detail-panel .detail-scroll-container {
  display: block;
  padding: 0;
  width: 100%;
  position: static;
  perspective: none;
  height: auto;
  min-height: auto;
  max-height: none;
  overflow-y: auto;
  visibility: visible;
  opacity: 1;
}

[data-layout="mobile"] .manual-block-heading {
  width: 100%;
  text-align: left;
  margin-bottom: 2rem;
  padding: 1rem;
  background-color: #ffffff;
  border-bottom: 2px solid #e60033;
}

[data-layout="mobile"] .manual-block-heading h1 {
  font-size: 1.8rem;
  color: #e60033;
  margin: 0;
  text-shadow: none;
}

/* ===========================
   🔧 共通要素（メニューなど）
   =========================== */

.menu-wrapper {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 335px;
  max-width: 100vw;
  background: rgba(0, 0, 0, 1);
  overflow-y: auto;
  padding: 0rem 1rem 1rem 1rem;
  z-index: var(--z-menu);
  pointer-events: auto;
  border-right: 2px solid rgba(255, 255, 255, 0.1);
  display: block;
  opacity: 1;
  visibility: visible;
}

.menu-item {
  position: relative;
  font-size: clamp(14px, 1.6vw, 16px);
  font-weight: normal;
  cursor: pointer;
  user-select: none;
  transition: color 0.3s, transform 0.3s, text-shadow 0.3s, opacity 0.3s;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
  color: #eee;
  padding: 6px 0 6px 1.2em;
  width: auto;
  text-align: left;
  z-index: var(--z-character);
  pointer-events: auto;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: break-word;
  opacity: 0.8;
}

.menu-item.selected {
  color: #ff3333;
  font-weight: bold;
  transform: translateX(8px);
  opacity: 1;
}

/* ===========================
   📱 モバイル専用ページ番号
   =========================== */

[data-layout="mobile"] .page-number-mobile {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  z-index: 100;
  pointer-events: none;
}

/* ===========================
   ✨ 初期状態（JavaScript制御待ち）
   =========================== */

/* JavaScript未実行時のデフォルト状態 */
html:not([data-layout]) .book-spread-container,
html:not([data-layout]) .detail-panel {
  opacity: 0;
  visibility: hidden;
  display: none;
}