/* ============================================================
   旅のしおり — Theater Onboarding Guide
   ============================================================ */

.theater-shiori {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.theater-shiori.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.theater-shiori.is-fading {
  opacity: 0;
  transition: opacity 1.5s ease-out;
}

.theater-shiori__inner {
  position: relative;
  max-width: 500px;
  padding: 3.5rem 3.8rem;
  border-radius: 6px;
  text-align: center;

  /* 古書・羊皮紙風 — 金の蔦装飾フレーム */
  /* 中央を羊皮紙色で覆い、縁の装飾だけ見せる */
  background:
    radial-gradient(ellipse at center,
      rgba(243,238,226,0.95) 0%,
      rgba(243,238,226,0.92) 50%,
      rgba(243,238,226,0.6) 70%,
      rgba(243,238,226,0) 85%
    ),
    url('/assets/images/shiori-frame.webp') center / cover no-repeat;
  box-shadow:
    0 4px 40px rgba(0,0,0,0.5),
    0 1px 0 rgba(255,255,255,0.15) inset,
    0 -1px 0 rgba(0,0,0,0.08) inset;

  transform: scale(0.98);
  transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.theater-shiori.is-visible .theater-shiori__inner {
  transform: scale(1);
}

/* 上部装飾（フレーム画像があるので最小限） */
.theater-shiori__ornament {
  width: 30px;
  height: 1px;
  margin: 0 auto 1rem;
  background: linear-gradient(90deg, transparent, rgba(180,150,90,0.4), transparent);
}

/* テキスト */
.theater-shiori__lead {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  font-weight: 500;
  color: #2b2b2b;
  line-height: 1.8;
  margin: 0 0 0.4rem;
  letter-spacing: 0.06em;
}
.theater-shiori__sub {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.82rem;
  font-weight: 300;
  color: #5a5a5a;
  line-height: 1.6;
  margin: 0 0 1.5rem;
}

.theater-shiori__hints {
  text-align: left;
  border-top: 1px solid rgba(180,150,90,0.2);
  padding-top: 1rem;
}
.theater-shiori__hints p {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.78rem;
  color: #4a4a4a;
  line-height: 1.6;
  margin: 0 0 0.5rem;
  padding-left: 1.8rem;
  position: relative;
}
.theater-shiori__hints p:last-child {
  margin-bottom: 0;
}
.theater-shiori__icon {
  position: absolute;
  left: 0;
  top: 0;
  width: 1.4rem;
  text-align: center;
  color: #c9a96e;
  font-size: 0.82rem;
}

/* モバイル */
@media (max-width: 768px) {
  .theater-shiori__inner {
    max-width: 380px;
    padding: 2.8rem 3rem;
  }
  .theater-shiori__lead { font-size: 0.9rem; }
  .theater-shiori__sub { font-size: 0.78rem; }
  .theater-shiori__hints p { font-size: 0.72rem; }
}

/* しおりボタン（上部コントロール内） */
.theater-shiori-btn {
  opacity: 0.5;
  transition: opacity 0.2s;
}
.theater-shiori-btn:hover {
  opacity: 0.9;
}