/* ============================================================
   Flipbook モーダル 共通スタイル
   使い方：ボタンに data-flipbook 属性を付ければ起動する
   ============================================================ */

/* トリガーボタン */
.flipbook-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--accent, #0A6B7C);
  color: #fff;
  border: none;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 0.1em;
  cursor: pointer;
  border-radius: 2px;
  transition: all .2s;
}
.flipbook-trigger:hover {
  background: var(--accent-dark, #064149);
}
.flipbook-trigger .icon {
  font-size: 16px;
  line-height: 1;
}

/* オーバーレイ（背景） */
.flipbook-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 30, 0.94);
  z-index: 9999;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: flipbook-fade-in .25s ease;
}
.flipbook-overlay.is-open { display: flex; }

@keyframes flipbook-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 上部バー */
.flipbook-bar {
  width: 100%;
  max-width: 1400px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  padding: 0 8px 16px;
  font-family: 'Noto Sans JP', sans-serif;
}
.flipbook-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  opacity: 0.9;
}
.flipbook-close {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .2s;
}
.flipbook-close:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.6);
}

/* Flipbook 本体（page-flipが初期化されるコンテナ） */
.flipbook-stage {
  width: 100%;
  max-width: 1200px;
  height: 78vh;
  max-height: calc(100vh - 200px);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2vh 0;
}

.flipbook-stage .stf__parent {
  margin: 0 auto !important;
}

/* ページ画像 */
.flipbook-page {
  background: #f5f2ed;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.flipbook-page img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #fff;
}

/* 下部コントロール */
.flipbook-controls {
  width: 100%;
  max-width: 1400px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  padding-top: 16px;
  color: #fff;
}
.flipbook-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  padding: 10px 22px;
  border-radius: 2px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: all .2s;
}
.flipbook-btn:hover:not(:disabled) {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.6);
}
.flipbook-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.flipbook-pagenum {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 0.1em;
  opacity: 0.9;
  min-width: 80px;
  text-align: center;
}
.flipbook-hint {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
  margin-left: 20px;
}
@media (max-width: 640px) {
  .flipbook-hint { display: none; }
  .flipbook-btn { padding: 8px 14px; font-size: 11px; }
}

/* ローディング */
.flipbook-loading {
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  letter-spacing: 0.2em;
  opacity: 0.7;
}