/* ============================================
   CRYSTAL INSENCE — Detail Page Styles
   Premium · Quiet · Modern Japanese Minimalism
   ============================================ */

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Fade-in trigger class --- */
.ci-fade {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

/* Staggered children delay */
.ci-fade[data-delay="1"] { transition-delay: 0.1s; }
.ci-fade[data-delay="2"] { transition-delay: 0.2s; }
.ci-fade[data-delay="3"] { transition-delay: 0.3s; }
.ci-fade[data-delay="4"] { transition-delay: 0.4s; }
.ci-fade[data-delay="5"] { transition-delay: 0.5s; }
.ci-fade[data-delay="6"] { transition-delay: 0.6s; }
.ci-fade[data-delay="7"] { transition-delay: 0.7s; }
.ci-fade[data-delay="8"] { transition-delay: 0.8s; }

/* ============================================
   Hero
   ============================================ */
.ci-hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + var(--space-4xl)) var(--space-xl) var(--space-4xl);
  overflow: hidden;
}

.ci-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.ci-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ci-hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20, 18, 15, 0.55) 0%,
    rgba(20, 18, 15, 0.45) 50%,
    rgba(20, 18, 15, 0.65) 100%
  );
}

.ci-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.ci-hero__breadcrumb {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-2xl);
  letter-spacing: 0.05em;
}

.ci-hero__breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.ci-hero__breadcrumb a:hover {
  color: rgba(255, 255, 255, 0.9);
}

.ci-hero__breadcrumb span {
  margin: 0 0.5em;
  opacity: 0.5;
}

.ci-hero__title {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-size: clamp(var(--text-5xl), 8vw, var(--text-8xl));
  font-weight: 500;
  color: #ffffff;
  letter-spacing: 0.12em;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.ci-hero__subtitle {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: rgba(255, 255, 255, 0.85);
  font-weight: 400;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-2xl);
}

.ci-hero__lead {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  line-height: 2.0;
  max-width: 620px;
  margin: 0 auto;
  letter-spacing: 0.03em;
}

/* ============================================
   Sections
   ============================================ */
.ci-section {
  padding: var(--space-6xl) var(--space-xl);
  background: #ffffff;
}

.ci-section--alt {
  background: #faf8f3;
}

.ci-section__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

/* ============================================
   Heading
   ============================================ */
.ci-heading {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.ci-heading__en {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.ci-heading__text {
  font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
  font-weight: 700;
  color: #2a2a2a;
  line-height: 1.6;
  letter-spacing: 0.04em;
}

.ci-heading__text::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-gold);
  margin: var(--space-lg) auto 0;
}

/* ============================================
   Lead paragraph
   ============================================ */
.ci-lead {
  font-size: clamp(var(--text-base), 1.5vw, var(--text-lg));
  color: #555;
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
  line-height: 2.0;
  letter-spacing: 0.03em;
}

/* ============================================
   Body text
   ============================================ */
.ci-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: var(--text-base);
  color: #2a2a2a;
  line-height: 2.0;
  letter-spacing: 0.03em;
}

.ci-body p {
  margin-bottom: var(--space-xl);
}

.ci-body p:last-child {
  margin-bottom: 0;
}

/* ============================================
   Stats (3-column market data)
   ============================================ */
.ci-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-4xl);
}

.ci-stat {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(186, 153, 53, 0.15);
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.ci-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.ci-stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 600;
  color: var(--color-gold);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.ci-stat__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: #2a2a2a;
  margin-bottom: var(--space-md);
  letter-spacing: 0.03em;
}

.ci-stat__desc {
  font-size: var(--text-sm);
  color: #888;
  line-height: 1.8;
  letter-spacing: 0.02em;
}

/* ============================================
   Achievements
   ============================================ */
.ci-achievements {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-3xl);
}

.ci-achievement {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.ci-achievement:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(186, 153, 53, 0.3);
}

.ci-achievement__number {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

.ci-achievement__text {
  font-size: var(--text-sm);
  color: #2a2a2a;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

/* ============================================
   CTA
   ============================================ */
.ci-cta {
  background: #2a2a2a;
  padding: var(--space-6xl) var(--space-xl);
  text-align: center;
}

.ci-cta__inner {
  max-width: 720px;
  margin: 0 auto;
}

.ci-cta__title {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: 700;
  color: #ffffff;
  line-height: 1.6;
  margin-bottom: var(--space-xl);
  letter-spacing: 0.04em;
}

.ci-cta__body {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  line-height: 2.0;
  margin-bottom: var(--space-3xl);
  letter-spacing: 0.02em;
}

.ci-cta__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.ci-cta__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--duration-normal) var(--ease-out);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.ci-cta__btn--primary {
  background: var(--color-gold);
  color: #ffffff;
  border: 1px solid var(--color-gold);
}

.ci-cta__btn--primary:hover {
  background: #d4b44e;
  border-color: #d4b44e;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(186, 153, 53, 0.35);
}

.ci-cta__btn--secondary {
  background: transparent;
  color: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.ci-cta__btn--secondary:hover {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

/* ============================================
   Gold separator line (decorative)
   ============================================ */
.ci-separator {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-gold);
  margin: 0 auto var(--space-3xl);
  border: none;
}

/* ============================================
   Responsive — Tablet (max-width: 1023px)
   ============================================ */
@media (max-width: 1023px) {
  .ci-hero {
    min-height: 70vh;
    padding-top: calc(var(--header-height) + var(--space-3xl));
  }

  .ci-section {
    padding: var(--space-5xl) var(--space-xl);
  }

  .ci-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
  }

  .ci-achievements {
    grid-template-columns: repeat(2, 1fr);
  }

  .ci-cta {
    padding: var(--space-5xl) var(--space-xl);
  }
}

/* ============================================
   Responsive — Mobile (max-width: 767px)
   ============================================ */
@media (max-width: 767px) {
  .ci-hero {
    min-height: 65vh;
    padding-top: calc(var(--header-height) + var(--space-2xl));
    padding-bottom: var(--space-3xl);
  }

  .ci-hero__title {
    letter-spacing: 0.08em;
  }

  .ci-hero__subtitle {
    letter-spacing: 0.08em;
  }

  .ci-hero__lead {
    font-size: var(--text-xs);
  }

  .ci-section {
    padding: var(--space-4xl) var(--space-lg);
  }

  .ci-heading__text {
    font-size: var(--text-xl);
  }

  .ci-stats {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .ci-stat {
    padding: var(--space-xl) var(--space-lg);
  }

  .ci-achievements {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .ci-achievement {
    padding: var(--space-xl) var(--space-lg);
  }

  .ci-cta {
    padding: var(--space-4xl) var(--space-lg);
  }

  .ci-cta__buttons {
    flex-direction: column;
  }

  .ci-cta__btn {
    width: 100%;
  }
}