/* ==========================================================================
   front-page.css — Salon Lab Site
   ========================================================================== */

/* ==========================================================================
   フェードイン（IntersectionObserver）
   ========================================================================== */
.lab-fade {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.lab-fade.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.lab-fade--d1 { transition-delay: 0.12s; }
.lab-fade--d2 { transition-delay: 0.24s; }
.lab-fade--d3 { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  .lab-fade { opacity: 1; transform: none; }
}


/* ==========================================================================
   Section 1: Hero
   ========================================================================== */
.fp-hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  display: flex;
  align-items: center;
  background-color: var(--bg-dark);
  overflow: hidden;
  padding-block: clamp(80px, 12vw, 160px);
}

.fp-hero__inner {
  position: relative;
  z-index: 1;
}

.fp-hero__label {
  font-family: var(--font-serif-en);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--accent-light);
  margin-bottom: 2rem;
}

.fp-hero__title {
  font-family: var(--font-serif-ja);
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 300;
  color: var(--text-inverse);
  line-height: 1.45;
  letter-spacing: 0.04em;
  margin-bottom: 1.75rem;
}

.fp-hero__title em {
  font-style: normal;
  color: var(--accent-light);
}

.fp-hero__sub {
  font-family: var(--font-sans);
  font-size: clamp(0.82rem, 1.5vw, 0.95rem);
  font-weight: 300;
  color: rgba(250, 250, 250, 0.55);
  letter-spacing: 0.06em;
  margin-bottom: 3rem;
  line-height: 1.8;
}

.fp-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.fp-hero__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.fp-hero__btn--primary {
  background-color: var(--accent);
  color: var(--text-inverse);
}
.fp-hero__btn--primary:hover { background-color: var(--accent-light); }

.fp-hero__btn--ghost {
  background-color: transparent;
  color: rgba(250, 250, 250, 0.7);
  border: 1px solid rgba(250, 250, 250, 0.25);
}
.fp-hero__btn--ghost:hover {
  border-color: rgba(250, 250, 250, 0.7);
  color: var(--text-inverse);
}

/* 装飾テキスト */
.fp-hero__deco {
  position: absolute;
  right: -0.02em;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif-en);
  font-size: clamp(6rem, 14vw, 13rem);
  font-weight: 400;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(250, 250, 250, 0.06);
  letter-spacing: 0.02em;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}


/* ==========================================================================
   Section 2: About
   ========================================================================== */
.fp-about {
  padding-block: clamp(80px, 10vw, 140px);
  background-color: var(--bg-secondary);
}

.fp-about__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.fp-about__num {
  font-family: var(--font-serif-en);
  font-size: clamp(4rem, 8vw, 7rem);
  font-weight: 400;
  color: var(--border);
  line-height: 1;
  letter-spacing: -0.02em;
  padding-top: 0.1em;
  flex-shrink: 0;
}

.fp-about__en {
  font-family: var(--font-serif-en);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.fp-about__title {
  font-family: var(--font-serif-ja);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.55;
  letter-spacing: 0.04em;
  margin-bottom: 2rem;
}

.fp-about__text {
  font-family: var(--font-sans);
  font-size: clamp(0.88rem, 1.5vw, 0.95rem);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 2;
  letter-spacing: 0.03em;
}
.fp-about__text + .fp-about__text { margin-top: 1rem; }

@media (max-width: 640px) {
  .fp-about__inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .fp-about__num { font-size: 3rem; }
}


/* ==========================================================================
   Section 3: Demo 一覧
   ========================================================================== */
.fp-demo {
  padding-block: clamp(80px, 10vw, 140px);
  background-color: var(--bg-primary);
}

.fp-demo__header {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.fp-demo__en {
  font-family: var(--font-serif-en);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.fp-demo__title {
  font-family: var(--font-serif-ja);
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.4;
  letter-spacing: 0.04em;
}

/* グリッド：意図的にずれを作る */
.fp-demo__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.fp-demo__item {
  display: block;
}

/* 2番目のカードをオフセット */
@media (min-width: 768px) {
  .fp-demo__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem 3rem;
  }
  .fp-demo__item--offset {
    margin-top: 3rem;
  }
}

@media (min-width: 1024px) {
  .fp-demo__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.fp-demo__link {
  display: block;
  text-decoration: none;
}

.fp-demo__thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: var(--bg-secondary);
  margin-bottom: 1.25rem;
}

.fp-demo__grid .fp-demo__thumb {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.fp-demo__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease-out;
}
.fp-demo__link:hover .fp-demo__thumb img {
  transform: scale(1.04);
}

.fp-demo__badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text-inverse);
  background-color: rgba(17, 17, 17, 0.65);
  backdrop-filter: blur(4px);
  padding: 0.3rem 0.75rem;
}

.fp-demo__meta {
  padding-inline: 0.25rem;
}

.fp-demo__type {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.fp-demo__desc {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.8;
  letter-spacing: 0.02em;
}

/* もっと見るリンク */
.fp-demo__more {
  margin-top: clamp(40px, 6vw, 64px);
}

.fp-demo__more-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 0.3rem;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition);
}
.fp-demo__more-link:hover { color: var(--accent); border-color: var(--accent); }


/* ==========================================================================
   Section 4: こういう方に
   ========================================================================== */
.fp-for {
  padding-block: clamp(80px, 10vw, 140px);
  background-color: var(--bg-dark);
}

.fp-for__header {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.fp-for__en {
  font-family: var(--font-serif-en);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: rgba(250, 250, 250, 0.35);
  margin-bottom: 0.75rem;
}

.fp-for__title {
  font-family: var(--font-serif-ja);
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--text-inverse);
  line-height: 1.4;
  letter-spacing: 0.04em;
}

.fp-for__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(250, 250, 250, 0.1);
}

.fp-for__item {
  display: grid;
  grid-template-columns: 5rem 1fr;
  align-items: center;
  gap: 2rem;
  padding-block: clamp(1.5rem, 3vw, 2.5rem);
  border-bottom: 1px solid rgba(250, 250, 250, 0.1);
}

.fp-for__num {
  font-family: var(--font-serif-en);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 400;
  color: rgba(250, 250, 250, 0.12);
  line-height: 1;
  letter-spacing: 0.05em;
}

.fp-for__text {
  font-family: var(--font-serif-ja);
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: 300;
  color: var(--text-inverse);
  letter-spacing: 0.06em;
  line-height: 1.6;
}

@media (max-width: 480px) {
  .fp-for__item { grid-template-columns: 3rem 1fr; gap: 1rem; }
}


/* ==========================================================================
   Section 5: 無料制作の案内
   ========================================================================== */
.fp-free {
  padding-block: clamp(100px, 12vw, 160px);
  background-color: var(--bg-secondary);
}

.fp-free__inner {
  max-width: 680px;
}

.fp-free__en {
  font-family: var(--font-serif-en);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.fp-free__title {
  font-family: var(--font-serif-ja);
  font-size: clamp(1.5rem, 3.5vw, 2.6rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin-bottom: 1.75rem;
}

.fp-free__text {
  font-family: var(--font-sans);
  font-size: clamp(0.88rem, 1.5vw, 0.95rem);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 2;
  letter-spacing: 0.03em;
  margin-bottom: 2.5rem;
}

.fp-free__cta-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.fp-free__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  width: 100%;
  max-width: 320px;
  padding: 0.9rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

@media (min-width: 640px) {
  .fp-free__cta-group {
    flex-direction: row;
    align-items: stretch;
  }
  .fp-free__cta {
    width: auto;
    max-width: none;
    white-space: nowrap;
    padding-inline: 2.25rem;
  }
}

.fp-free__cta--instagram {
  color: var(--text-inverse);
  background-color: var(--accent);
}
.fp-free__cta--instagram:hover { background-color: var(--accent-light); }

.fp-free__cta--form {
  color: var(--text-primary);
  background-color: transparent;
  border: 1px solid var(--border-strong);
}
.fp-free__cta--form:hover {
  background-color: var(--text-primary);
  color: var(--text-inverse);
}