/* ========================================
   高度UIアニメーション デモ（Core Package）
   目で見てわかる「基本との違い」
   ======================================== */

.anim-demo {
  --anim-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --anim-duration: 0.7s;
}

/* Hero：背景がゆっくり動く（基本にはない） */
.anim-hero {
  position: relative;
  padding: 6rem 1.5rem 4rem;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.anim-hero-bg {
  position: absolute;
  inset: -20%;
  background: linear-gradient(135deg, var(--color-accent-light) 0%, transparent 40%, #f5e6dc 70%, var(--color-accent-light) 100%);
  background-size: 200% 200%;
  animation: heroBgShift 12s ease-in-out infinite;
  opacity: 0.4;
}

.anim-hero-inner {
  position: relative;
  max-width: 560px;
}

@keyframes heroBgShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.anim-hero-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
}

.anim-hero-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

.anim-hero-lead {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Section */
.anim-section {
  padding: 4rem 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.anim-section--alt {
  background: var(--color-surface);
  margin: 0;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.anim-section-title {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}

.anim-section-lead {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
}

.anim-section-lead strong {
  color: var(--color-accent-dark);
}

/* ① 左右・下からスライドイン（スタッガー長め） */
.anim-reveal-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.anim-reveal-item {
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  font-size: 1rem;
  transition: opacity var(--anim-duration) var(--anim-ease), transform var(--anim-duration) var(--anim-ease);
}

.anim-reveal-from-left {
  opacity: 0;
  transform: translateX(-80px);
}

.anim-reveal-from-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.anim-reveal-from-bottom {
  opacity: 0;
  transform: translateY(50px);
}

.anim-reveal-from-bottom.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.4s;
}

.anim-reveal-from-right {
  opacity: 0;
  transform: translateX(80px);
}

.anim-reveal-from-right.is-visible {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0.8s;
}

.anim-reveal-item span {
  display: inline-block;
  font-weight: 700;
  color: var(--color-accent);
  margin-right: 0.5rem;
}

/* ② カード3Dチルト用 */
.anim-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  perspective: 800px;
}

.anim-card {
  padding: 1.5rem;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(44, 42, 40, 0.04);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--anim-duration) var(--anim-ease),
              transform 0.4s var(--anim-ease),
              box-shadow 0.4s var(--anim-ease);
}

.anim-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-card--tilt {
  transform-style: preserve-3d;
}

.anim-card--tilt:hover {
  box-shadow: 0 20px 48px rgba(44, 42, 40, 0.18);
}

.anim-card-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.anim-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.anim-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ③ テキスト＋下線が伸びる */
.anim-line {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  line-height: 1.6;
  margin: 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--anim-ease), transform 0.7s var(--anim-ease);
}

.anim-line.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-line-underline {
  position: relative;
  display: inline-block;
  padding-bottom: 0.5rem;
}

.anim-line-underline::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  border-radius: 2px;
  transition: width 0.8s var(--anim-ease);
}

.anim-line-underline.is-visible::after {
  width: 100%;
}

/* ④ パララックス */
.anim-section--parallax {
  max-width: 100%;
}

.anim-parallax {
  position: relative;
  height: 220px;
  margin: 2rem 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #f0ebe6 0%, #e8e0d8 100%);
}

.anim-parallax-layer {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  transition: transform 0.1s linear;
}

.anim-parallax-back {
  width: 120px;
  text-align: center;
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
}

.anim-parallax-mid {
  width: 140px;
  text-align: center;
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
}

.anim-parallax-front {
  width: 160px;
  text-align: center;
  background: var(--color-accent);
  color: #fff;
}

/* ⑤ カウントアップ（単位付き） */
.anim-counters {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  justify-content: center;
  margin-bottom: 0.5rem;
}

.anim-counter-block {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.anim-counter {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  min-width: 3rem;
  text-align: right;
  display: inline-block;
}

.anim-counter-unit {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.anim-counters-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0;
}

/* ⑥ ボタン・光が流れる */
.anim-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--anim-duration) var(--anim-ease), transform var(--anim-duration) var(--anim-ease);
}

.anim-buttons.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-btn {
  position: relative;
  display: inline-block;
  padding: 0.9rem 1.75rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 999px;
  overflow: hidden;
  transition: transform 0.3s var(--anim-ease), box-shadow 0.3s var(--anim-ease);
}

.anim-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 28px rgba(201, 123, 99, 0.4);
}

.anim-btn--shine {
  background: var(--color-accent);
  color: #fff;
}

.anim-btn--shine::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.6s ease;
}

.anim-btn--shine:hover::after {
  left: 100%;
}

.anim-btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.anim-btn--outline:hover {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 8px 28px rgba(44, 42, 40, 0.15);
}

/* Stagger */
.anim-card:nth-child(1).is-visible { transition-delay: 0s; }
.anim-card:nth-child(2).is-visible { transition-delay: 0.12s; }
.anim-card:nth-child(3).is-visible { transition-delay: 0.24s; }

/* CTA */
.anim-cta {
  padding: 3rem 1.5rem;
  text-align: center;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.anim-cta p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0 0 1.25rem;
}

.anim-cta .flow-cta {
  margin: 0;
}

@media (max-width: 768px) {
  .anim-hero {
    padding: 4rem 1rem 3rem;
    min-height: 50vh;
  }

  .anim-section,
  .anim-section--alt {
    padding: 3rem 1rem;
  }

  .anim-parallax {
    height: 180px;
  }

  .anim-parallax-layer {
    font-size: 0.95rem;
    padding: 0.75rem 1.25rem;
  }
}