/* =========================
   reset
========================= */
section-js,
section-mp {
  display: block;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  background-color: #000;
}

/* =========================
   hero
========================= */
.hero {
  width: 100%;
  height: 100vh;
  position: relative;
  overflow: hidden;

  --bg: var(--bg-pc);
  --sec-alpha: 1;
  opacity: var(--sec-alpha);
  will-change: opacity;
}

/* ★ SP横はPCと同じ見え方にする（SP縦だけ別レイアウトにするため） */
@media screen and (max-width: 768px) and (orientation: landscape) {
  .hero {
    --bg: var(--bg-pc);
  }
}

@media screen and (max-width: 768px) and (orientation: portrait) {
  .hero {
    --bg: var(--bg-sp, var(--bg-pc));
  }
}

/* =========================
   メイン背景
========================= */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--bg);
  background-size: contain;
  background-position: center;
  background-repeat: repeat-x;

  opacity: 0;
  transform: scale(1.04);
  transition: opacity 1.4s ease, transform 1.6s ease;
}

.hero.is-inview::before {
  opacity: 1;
  transform: scale(1);
}

/* =========================
   overlay 共通
========================= */
.left-overlay,
.right-overlay,
.new-overlay {
  z-index: 2;
  pointer-events: none;

  visibility: hidden;
  opacity: 0;
  transform: translateY(18px);

  filter: none;
  will-change: transform, opacity;
}

/* =========================
   左オーバーレイ
========================= */
.left-overlay {
  position: absolute;
  left: 45%;
  top: 40%;
  width: 10%;
  height: auto;
}

.hero.is-inview .left-overlay {
  visibility: visible;
  animation: overlay-in 1.1s ease both,
             overlay-float 2.2s ease-in-out infinite;
}

/* =========================
   右オーバーレイ
========================= */
.right-overlay {
  position: absolute;
  right: 20%;
  top: 25%;
  width: 10%;
  height: auto;
}

.hero.is-inview .right-overlay {
  visibility: visible;
  animation: overlay-in 1.1s ease both,
             overlay-float 2.2s ease-in-out infinite;
  animation-delay: 0s, 0.6s;
}

/* =========================
   ★ new-overlay（logo-stack基準・右上）
   サイズは「元のまま」：
   - PC: 80px
   - SP: --ov-new-size（元の 11vw）を使う
========================= */
.logo-stack {
  position: relative;
  width: 40vw;
  max-width: 420px;
}

.logo-stack .new-overlay{
  position: absolute;
  top: -8%;
  right: 5%;
  left: auto;

  width: 80px; /* PCは元の80pxに固定 */
  height: auto;
  z-index: 5;
}

.hero.is-inview .new-overlay{
  visibility: visible;
  animation: overlay-in 1.1s ease both;
}

/* =========================
   アニメーション
========================= */
@keyframes overlay-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes overlay-float {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-12px); }
  100% { transform: translateY(0); }
}
/* =========================
   左カラム
========================= */
.hero-content {
  width: 50%;
  height: 100%;
  padding: 60px;

  display: flex;
  justify-content: center;
  align-items: center;

  position: relative;
  z-index: 3;
}

/* =========================
   中央スタック
========================= */
.center-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: #fff;
  transform: translateY(-24px);
}

/* =========================
   ロゴ
========================= */
.logo {
  width: 100%;
  display: block;
}

/* ロゴ（JA）: 要素単位で発火 */
.logo-ja {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1.2s ease, transform 1.4s ease;
}

.logo-ja.is-inview {
  opacity: 1;
  transform: translateY(0);
}

/* ロゴ（EN）: 要素単位で発火（左から徐々に現れる） */
.logo-en {
  position: absolute;
  inset: 0;
  opacity: 0;
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.6s ease, opacity 1.2s ease;
  transition-delay: 0.4s;
}

.logo-en.is-inview {
  opacity: 1;
  clip-path: inset(0 0 0 0);
}

/* =========================
   説明文（要素単位で発火）
========================= */
.description {
  font-size: clamp(15px, 1.2vw, 30px);
  line-height: 2;
  letter-spacing: 0.02em;
  margin-bottom: 24px;

  opacity: 0;
  transform: translateY(18px);
  transition: opacity 1.2s ease, transform 1.4s ease;
  transition-delay: 0.2s;
}

.description.is-inview {
  opacity: 1;
  transform: translateY(0);
}

/* ★ main（最初のセクション）のみ */
main.hero .description::after {
  content: "";
  display: block;
  width: 1px;
  height: 80px;
  margin: 20px auto 0;
  background: #fff;

  /* 初期状態は完全非表示 */
  transform: scaleY(0);
  transform-origin: top;
  opacity: 0;

  animation: line-appear-disappear 3.5s infinite;
  animation-fill-mode: both;
  animation-delay: 1.5s;
}

@keyframes line-appear-disappear {

  0% {
    transform: scaleY(0);
    opacity: 0;
  }

  25% {
    transform: scaleY(1);
    opacity: 1;
  }

  40% {
    transform: scaleY(1);
    opacity: 1;
  }

  55% {
    transform: scaleY(0);
    opacity: 0;
  }

  70% {
    transform: scaleY(0);
    opacity: 0;
  }

  100% {
    transform: scaleY(0);
    opacity: 0;
  }
}

/* =========================
   view more（要素単位で発火）
========================= */
.view-more {
  position: relative;
  display: block;

  width: 40vw;
  max-width: 420px;
  padding: 8px 0;

  border: 1px solid #fff;
  text-decoration: none;

  text-align: center;
  color: #fff;
  letter-spacing: 0.14em;
  font-size: clamp(12px, 1vw, 18px);
  text-transform: none;

  overflow: hidden;
  cursor: pointer;

  opacity: 0;
  transform: translateY(18px);
  transition: opacity 1.2s ease, transform 1.4s ease;
  transition-delay: 0.2s;

  /* ★ button化しても見た目を固定（ここが追加の本命） */
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
  border-radius: 0;
  font: inherit;
  line-height: normal;
}

.view-more.is-inview {
  opacity: 1;
  transform: translateY(0);
}

.view-more span {
  position: relative;
  z-index: 2;
}

.view-more::before {
  content: "";
  position: absolute;
  inset: 0;
  background: #fff;

  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s ease;
  z-index: 1;
}

.view-more::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;

  display: flex;
  align-items: center;
  justify-content: center;

  color: #000;
  letter-spacing: 0.14em;
  font-size: inherit;

  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.6s ease;
  z-index: 3;
}

.view-more:hover::before {
  transform: scaleX(1);
}

.view-more:hover::after {
  clip-path: inset(0 0 0 0);
}

/* =========================
   fragrance（要素単位で発火）
========================= */
.fragrance-stack {
  position: relative;
  width: 40vw;
  max-width: 420px;
  margin-top: 32px;

  --t0: 0.1s;
  --gap: 0.32s;
  --alpha: 0.92;
}

.fragrance {
  position: absolute;
  inset: 0;
  width: 100%;
  height: auto;

  opacity: 0;
  filter: blur(3px);
  transform: translateY(var(--y)) scale(1.02);

  transition:
    opacity 1.1s ease,
    transform 1.4s ease,
    filter 1.2s ease;
}

.fragrance.is-inview {
  opacity: var(--alpha);
  filter: blur(0);
  transform: translateY(0) scale(1);
}

.layer-top {
  z-index: 3;
  --y: -10px;
  transition-delay: var(--t0);
}

.layer-middle {
  z-index: 2;
  --y: -14px;
  transition-delay: calc(var(--t0) + var(--gap));
}

.layer-last {
  z-index: 1;
  --y: -18px;
  transition-delay: calc(var(--t0) + (var(--gap) * 2));
}

/* =========================
   Topに戻るボタン
========================= */
.back-to-top {
  position: fixed;
  right: clamp(16px, 2vw, 28px);
  bottom: clamp(16px, 2vw, 28px);

  width: clamp(44px, 4vw, 60px);
  height: clamp(44px, 4vw, 60px);

  border: none;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;

  z-index: 999;

  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;

  transition: opacity 0.35s ease, transform 0.35s ease;
  -webkit-tap-highlight-color: transparent;
}

.back-to-top::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -58%);

  width: 0;
  height: 0;

  border-left: clamp(7px, 0.7vw, 10px) solid transparent;
  border-right: clamp(7px, 0.7vw, 10px) solid transparent;
  border-bottom: clamp(11px, 1vw, 16px) solid #000;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-6px);
}

.back-to-top:active {
  transform: translateY(-3px);
}

.back-to-top:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.85);
  outline-offset: 6px;
}


.page-footer {
  background: #000;
  color: #fff;
  text-align: center;
  padding: 40px 20px;
  font-size: 14px;
}

/* =========================
   SP
========================= */
@media screen and (max-width: 768px) and (orientation: portrait) {
  .hero {
    --next-delay: 10svh;
  }

  .hero.js-reveal + .hero.js-reveal {
    margin-top: var(--next-delay);
  }

  .hero {
    --logo-up: 42vh;
    --group-down: 15vh;
    --gap-desc-btn: 78px;
    --gap-btn-frag: 50px;

    --ovl-l-x: -45vw;
    --ovl-l-y: -17vh;
    --ovr-r-x:  15vw;
    --ovr-r-y:  -15vh;

    --ov-size: 22vw;
    --ov-new-size: 16vw; /* ★ 元のサイズ */

    --frag-h: clamp(220px, 60vw, 300px);
    --stack-pad-bottom: calc(
      var(--group-down) +
      var(--gap-desc-btn) +
      var(--gap-btn-frag) +
      var(--frag-h) +
      35vh
    );

    height: auto;
    min-height: 100svh;
  }
	
  .hero::before {
    background-repeat: no-repeat;
    background-size: cover;
  }

  .hero-content {
    width: 100%;
    height: auto;
    min-height: 100svh;
    padding: 0;

    justify-content: flex-start;
    align-items: stretch;
  }

  .center-stack {
    position: relative;
    width: 100%;
    transform: none;
    gap: 0;

    min-height: 100svh;
    padding-bottom: var(--stack-pad-bottom);
  }

  .left-overlay {
    left: calc(50% + var(--ovl-l-x));
    top:  calc(55% + var(--ovl-l-y));
    width: var(--ov-size);
  }

  .right-overlay {
    left: calc(50% + var(--ovr-r-x));
    top:  calc(50% + var(--ovr-r-y));
    right: auto;
    width: var(--ov-size);
  }

  /* ★ new-overlay：logo-stack基準のまま、サイズは元(11vw)に戻す */
  .logo-stack .new-overlay {
    top: 80%;
    right: auto;
    left: 0%;
    width: var(--ov-new-size, 13vw);
  }

  .logo-stack {
    position: absolute;
    left: 0;
    right: 0;
    margin: 0 auto;

    top: calc(48% - var(--logo-up));

    width: 80vw;
    max-width: 300px;
    z-index: 4;
  }

  main.hero .description {
    font-size: 18px;   /* お好みで 17〜20px くらい */
    line-height: 2.1;  /* 少し余白を足して上品に */
  }
	
  .description,
  .view-more,
  .fragrance-stack {
    position: absolute;
    left: 0;
    right: 0;
    margin: 0 auto;

    width: 80vw;
    max-width: 300px;
  }

  .description {
    top: calc(50% + var(--group-down));
    margin-bottom: 0;
    font-size: 16px;
    line-height: 1.9;
  }

  .view-more {
    top: calc(50% + var(--group-down) + var(--gap-desc-btn));
    font-size: 16px;
  }

  .fragrance-stack {
    top: calc(50% + var(--group-down) + var(--gap-desc-btn) + var(--gap-btn-frag));
    margin-top: 0;
  }

  .back-to-top {
    right: 18px;
    bottom: 18px;
    width: 48px;
    height: 48px;
  }

  .back-to-top::before {
    border-left-width: 8px;
    border-right-width: 8px;
    border-bottom-width: 13px;
  }
}

/* =========================
   ★ PC：上下センター最適化（見た目の重心を補正）
========================= */
@media screen and (min-width: 769px) {
  /* セクションは中身に合わせて伸びる */
  .hero {
    height: auto;
    min-height: 100vh;
  }

  /* padding を可変にして、低い画面で上詰まりしないようにする */
  .hero-content {
    height: auto;
    min-height: 100vh;
    padding: clamp(18px, 5vh, 60px);
  }

  /* ★ marginで重心がズレるので、gapで均等化 */
  .center-stack {
    gap: clamp(14px, 2.2vh, 26px);

    /* ★ “見た目の中心”を下へ微調整（錯視補正）
       高さが低いほど少し強めに効く */
    transform: translateY(clamp(20px, 1.6vh, 18px));
  }

  /* marginをやめて gap に任せる（重心ズレ防止） */
  .description {
    margin-bottom: 0;
  }

  .fragrance-stack {
    margin-top: 0;

    /* ★ フレグランスの“土台の高さ”を確保（隠れ防止） */
    height: clamp(220px, 18vw, 360px);
  }
	
  .left-overlay,
  .right-overlay {
    width: 8%;
  }
}

/* =========================
   reduced motion
========================= */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
    clip-path: none !important;
  }
}