/* =============================================
   Lim Modular Studio — animation.css
   スクロール連動フェードイン・アニメーション
   ============================================= */

/* --- 既存：フェードイン基本設定 --- */
/* .fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1.1s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
} */
/* 既存の .fade-in を修正 */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1.4s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- 遅延バリエーション --- */
/* .fade-in.delay-1 { transition-delay: 0.15s; }
.fade-in.delay-2 { transition-delay: 0.3s; }
.fade-in.delay-3 { transition-delay: 0.45s; }
.fade-in.delay-4 { transition-delay: 0.6s; } */
.fade-in.delay-1 { transition-delay: 0.2s; }
.fade-in.delay-2 { transition-delay: 0.4s; }
.fade-in.delay-3 { transition-delay: 0.6s; }
.fade-in.delay-4 { transition-delay: 0.8s; }
.fade-in.delay-5 { transition-delay: 0.75s; }
.fade-in.delay-6 { transition-delay: 0.85s; }

/* --- 既存：左からフェードイン --- */
/* .fade-in-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 1.1s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
} */
/* 既存の .fade-in-left を修正 */
.fade-in-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 1.4s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* --- 右からフェードイン --- */
.fade-in-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 1.1s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* --- パタッとめくれて現れる（左から） --- */
.flip-in {
  opacity: 0;
  transform: perspective(600px) rotateY(30deg);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: 0.3s; 
}

.flip-in.is-visible {
  opacity: 1;
  transform: perspective(600px) rotateY(0deg);
}

.flip-in.delay-1 { transition-delay: 0.2s; }
.flip-in.delay-2 { transition-delay: 0.4s; }

/* --- パタッとめくれて現れる（右から） --- */
.flip-in-right {
  opacity: 0;
  transform: perspective(600px) rotateY(-30deg);
  /* transform-origin: right center; */
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: 0.3s;
}

.flip-in-right.is-visible {
  opacity: 1;
  transform: perspective(600px) rotateY(0deg);
}

/* animation.cssに追記 — opacityだけのフェード */
.fade-only {
  opacity: 0;
  transition: opacity 2.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-only.is-visible {
  opacity: 1;
}

/* --- SP: flip-inを軽量化（3D変換→シンプルなフェードに） --- */
@media (max-width: 767px) {
  .flip-in {
    transform: translateY(24px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1),
                transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: 0s;
  }
  .flip-in.is-visible {
    transform: translateY(0);
  }

  .flip-in-right {
    transform: translateY(24px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1),
                transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: 0s;
  }
  .flip-in-right.is-visible {
    transform: translateY(0);
  }

  .flip-in.delay-1 { transition-delay: 0.1s; }
  .flip-in.delay-2 { transition-delay: 0.15s; }
}

/* --- アクセシビリティ --- */
@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .fade-in-left,
  .fade-in-right,
  .flip-in,
  .flip-in-right,
  .fade-only {
    opacity: 1;
    transform: none;
    transition: none;
  }
}