@charset "UTF-8";

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500&display=swap');

/* ============================================================
   リセット
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6,
pre, form, fieldset, input, textarea, p, blockquote, th, td, figure {
  margin: 0; padding: 0;
}

img  { max-width: 100%; height: auto; display: block; }
a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }

/* ============================================================
   デザイントークン
   ============================================================ */
:root {
  --white:      #ffffff;
  --off-white:  #f8f8f8;
  --hero-bg:    #f7f1e7;
  --black:      #111111;
  --green:      #243C2B;
  --muted:      #888888;
  --border:     #e0e0e0;
  --font:       "Noto Sans JP", "游ゴシック", YuGothic, "Hiragino Kaku Gothic ProN", sans-serif;
  --header-h:   96px;
  --max-w:      1100px;
  --section-py: clamp(64px, 10vw, 120px);
}

/* ============================================================
   ベース
   ============================================================ */
html { scroll-behavior: smooth; }

/* ページロード フェードイン */
@keyframes pageFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

body {
  font-family: var(--font);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.9;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  animation: pageFade 0.6s ease both;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}

/* スクリーンリーダー専用 */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* フォーカス */
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ============================================================
   フェードアップ（スクロール連動）
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity   0.9s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   ヘッダー
   ============================================================ */
#header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 200;
  transition: background 0.4s, box-shadow 0.4s;
}
#header.scrolled {
  background: rgba(255,255,255,0.95);
  box-shadow: 0 1px 0 var(--border);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  padding: 0 clamp(20px, 5vw, 48px);
}

.header-logo img {
  height: 160px;
  width: auto;
  mix-blend-mode: multiply;
  transition: opacity 0.25s;
}
.header-logo:hover img { opacity: 0.6; }

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-social {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-social img {
  height: 28px;
  width: auto;
  border-radius: 6px;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s;
}
.header-social a:hover img {
  transform: scale(1.12);
  opacity: 0.85;
}

/* ============================================================
   ハンバーガーボタン
   ============================================================ */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  position: relative;
  z-index: 300;
}
.hamburger-line {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--black);
  transition:
    background  0.25s,
    transform   0.4s cubic-bezier(0.16, 1, 0.3, 1),
    opacity     0.3s;
  transform-origin: center;
}

/* ホバーでグリーンに */
.hamburger:hover .hamburger-line { background: var(--green); }

.hamburger.is-active .hamburger-line:nth-child(1) {
  transform: translateY(4.5px) rotate(45deg);
  background: var(--white);
}
.hamburger.is-active .hamburger-line:nth-child(2) {
  transform: translateY(-4.5px) rotate(-45deg);
  background: var(--white);
}

/* ============================================================
   フルスクリーンナビゲーション
   ============================================================ */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 250;
  background: var(--green);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: calc(var(--header-h) + 40px) clamp(32px, 8vw, 100px) 60px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-16px);
  transition:
    opacity   0.5s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-overlay.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-overlay__list {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(16px, 3vw, 28px);
}

/* 下線が左から伸びるホバー */
.nav-overlay__list a {
  position: relative;
  font-size: clamp(22px, 4vw, 40px);
  font-weight: 300;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.06em;
  line-height: 1.3;
  transition: color 0.25s;
  display: inline-block;
}
.nav-overlay__list a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: rgba(255,255,255,0.5);
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-overlay__list a:hover {
  color: var(--white);
}
.nav-overlay__list a:hover::after { width: 100%; }

.nav-overlay__footer {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

/* 予約ボタン：スライドフィル */
.nav-overlay__reserve {
  position: relative;
  overflow: hidden;
  display: inline-block;
  padding: 12px 32px;
  border: 1px solid rgba(255,255,255,0.5);
  color: var(--white);
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: border-color 0.25s, color 0.3s;
  z-index: 0;
}
.nav-overlay__reserve::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: -1;
}
.nav-overlay__reserve:hover::before { transform: translateX(0); }
.nav-overlay__reserve:hover { border-color: var(--white); }

.nav-overlay__social {
  display: flex;
  gap: 14px;
}
.nav-overlay__social img {
  height: 28px;
  width: auto;
  border-radius: 6px;
  opacity: 0.85;
  transition: opacity 0.25s, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.nav-overlay__social a:hover img {
  opacity: 1;
  transform: scale(1.12);
}

body.nav-open { overflow: hidden; }

/* ============================================================
   ヒーロー
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

/* --- 写真グリッド --- */
.hero-grid {
  display: grid;
  grid-template-columns: 58% 42%;
  gap: 3px;
  height: 100%;
}

.hero-grid__main {
  overflow: hidden;
}
.hero-grid__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 8s ease;
}
.hero:hover .hero-grid__main img { transform: scale(1.03); }

.hero-grid__side {
  display: grid;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 3px;
}
.hero-grid__cell {
  overflow: hidden;
}
.hero-grid__cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 8s ease;
}
.hero:hover .hero-grid__cell img { transform: scale(1.04); }

/* --- フロストグラスカード（右カラム＝右半分の写真群の上に配置して女の子の顔を避ける） --- */
.hero-card {
  position: absolute;
  top: 50%;
  left: 79%;
  transform: translate(-50%, -50%);
  width: min(340px, 36vw);
  padding: clamp(32px, 5vw, 52px) clamp(28px, 5vw, 52px);
  text-align: center;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  animation: cardFadeIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: 0.3s;
}
@keyframes cardFadeIn {
  from { opacity: 0; transform: translate(-50%, calc(-50% + 16px)); }
  to   { opacity: 1; transform: translate(-50%, -50%); }
}

.hero-card__logo {
  width: clamp(140px, 22vw, 200px);
  margin: 0 auto 16px;
  /* 白背景をヘッダーと自然に馴染ませる */
  mix-blend-mode: multiply;
}

.hero-card__place {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-bottom: 14px;
}

.hero-card__tagline {
  font-size: clamp(14px, 1.8vw, 18px);
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--black);
  margin-bottom: 28px;
}

.hero-card__cta {
  position: relative;
  overflow: hidden;
  display: inline-block;
  padding: 12px 36px;
  border: 1px solid var(--black);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--black);
  z-index: 0;
  transition: color 0.35s;
}
.hero-card__cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--black);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: -1;
}
.hero-card__cta:hover { color: var(--white); }
.hero-card__cta:hover::before { transform: translateX(0); }

/* --- SNS アイコン --- */
.hero-sns {
  position: absolute;
  bottom: 48px;
  left: clamp(20px, 5vw, 48px);
  z-index: 10;
}
.hero-sns a {
  display: block;
  color: var(--white);
  opacity: 0.75;
  filter: drop-shadow(0 1px 3px rgba(0,0,0,0.3));
  transition: opacity 0.25s, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.hero-sns a:hover {
  opacity: 1;
  transform: scale(1.15);
}
.hero-sns svg { width: 24px; height: 24px; }

/* --- スクロールインジケーター --- */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  right: clamp(20px, 5vw, 48px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 10;
}
.hero-scroll span {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--white);
  opacity: 0.6;
  writing-mode: vertical-rl;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.3));
}
.hero-scroll__line {
  width: 1px;
  height: 48px;
  background: var(--white);
  opacity: 0.45;
  animation: scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   ヒーロー レスポンシブ
   ============================================================ */
@media (max-width: 768px) {
  .hero { min-height: 100svh; }

  .hero-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 55vh 45vh;
  }

  .hero-grid__side {
    grid-template-rows: 1fr;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
  }

  .hero-card {
    left: 50%;
    top: 50%;
    width: min(300px, 84vw);
    padding: 28px 24px;
  }
  .hero-card__logo { width: 140px; }
}

/* ============================================================
   セクション 共通
   ============================================================ */
.section {
  padding: var(--section-py) 0;
}
.section:nth-of-type(even) {
  background: var(--off-white);
}

.section-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-heading {
  font-size: clamp(22px, 3.5vw, 36px);
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1.5;
  margin-bottom: clamp(40px, 6vw, 80px);
}

.section-cta {
  margin-top: clamp(40px, 6vw, 64px);
  text-align: center;
}

/* ============================================================
   ボタン（左からスライドフィル）
   ============================================================ */
.btn {
  position: relative;
  overflow: hidden;
  display: inline-block;
  padding: 14px 48px;
  border: 1px solid var(--black);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--black);
  z-index: 0;
  transition: color 0.35s;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--black);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: -1;
}
.btn:hover { color: var(--white); }
.btn:hover::before { transform: translateX(0); }

/* テキストリンク（下線が引き直されるアニメーション） */
.text-link {
  position: relative;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-bottom: 3px;
  transition: color 0.25s;
}
.text-link::before,
.text-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.text-link::before {
  background: var(--border);
  transform-origin: right;
}
.text-link::after {
  background: var(--black);
  transform: scaleX(0);
  transform-origin: left;
}
.text-link:hover { color: var(--black); }
.text-link:hover::before { transform: scaleX(0); }
.text-link:hover::after  { transform: scaleX(1); }

/* ============================================================
   ストーリーセクション
   ============================================================ */
.section-story .story-body {
  max-width: 640px;
  text-align: center;
  margin: 0 auto;
}

.story-kakko {
  width: 48px;
  margin: 0 auto 28px;
  opacity: 0.4;
  transition: opacity 0.4s;
}
.section-story:hover .story-kakko { opacity: 0.7; }

.story-quote {
  font-size: clamp(16px, 2.2vw, 22px);
  font-weight: 300;
  line-height: 2.1;
  letter-spacing: 0.04em;
}

/* ============================================================
   フィーチャーセクション（3カラム横並び）
   ============================================================ */
.section-features .container {
  margin-bottom: clamp(32px, 5vw, 56px);
}

/* デスクトップ: 3列グリッド */
.features-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
}

.feature-card__img {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.feature-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.feature-card:hover .feature-card__img img { transform: scale(1.05); }

.feature-card__body {
  flex: 1;
  padding: clamp(24px, 3vw, 40px) clamp(20px, 2.5vw, 36px) clamp(28px, 3.5vw, 48px);
}

.feature-card__num {
  font-size: 40px;
  font-weight: 300;
  color: var(--border);
  line-height: 1;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
  transition: color 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}
.feature-card:hover .feature-card__num { color: var(--green); }

.feature-card__title {
  font-size: clamp(16px, 1.8vw, 22px);
  font-weight: 400;
  line-height: 1.55;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.feature-card__text {
  font-size: 13px;
  line-height: 2;
  color: #555;
}

/* モバイルスワイプヒント（ドット） */
.features-hint {
  display: none;
  justify-content: center;
  gap: 6px;
  padding: 20px 0 4px;
}
.features-hint span {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
}

/* ============================================================
   ギャラリーセクション
   ============================================================ */
.section-gallery .container {
  margin-bottom: clamp(24px, 4vw, 48px);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-bottom: clamp(24px, 4vw, 48px);
}

/* 個別アイテムの時差フェード（JSから.visibleを付与） */
.gallery-grid__item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  cursor: zoom-in;
  opacity: 0;
  transform: translateY(16px) scale(0.98);
  transition:
    opacity   0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.gallery-grid__item.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* 薄いオーバーレイ */
.gallery-grid__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(36, 60, 43, 0);
  transition: background 0.4s;
  pointer-events: none;
}
.gallery-grid__item:hover::after { background: rgba(36, 60, 43, 0.08); }

.gallery-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.97);
  transition:
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    filter    0.4s;
}
.gallery-grid__item:hover img {
  transform: scale(1.06);
  filter: brightness(1);
}

.gallery-link { text-align: center; }

/* ============================================================
   概要テーブル共通（アトリエ概要・運営会社）
   ============================================================ */
.info-table { max-width: 620px; }

.info-table__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 0 24px;
  padding: 20px 8px;
  border-bottom: 1px solid var(--border);
  transition: background 0.25s;
  border-radius: 2px;
}
.info-table__row:first-child { border-top: 1px solid var(--border); }

/* 行ホバーハイライト */
.info-table__row:hover { background: rgba(36, 60, 43, 0.03); }

.info-table__row dt {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding-top: 3px;
}
.info-table__row dd {
  font-size: 15px;
  line-height: 1.8;
}
.info-table__row dd strong { font-weight: 500; }

/* ============================================================
   メンバーセクション
   ============================================================ */
.member {
  padding: clamp(40px, 6vw, 80px) 0;
  border-bottom: 1px solid var(--border);
}
.member:last-of-type { border-bottom: none; }

.member__inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}

/* 写真：彩度アップ + スケール（overflow clipのためwrap必要） */
.member__photo-frame {
  overflow: hidden;
}
.member__photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: saturate(0.8);
  transition:
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    filter    0.8s;
}
.member:hover .member__photo {
  transform: scale(1.04);
  filter: saturate(1);
}

.member__name {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 400;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.member__bio {
  font-size: 14px;
  line-height: 2;
  color: #555;
  margin-bottom: 28px;
}

.member__works {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}
.member__works img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  filter: saturate(0.9);
  transition:
    opacity   0.3s,
    filter    0.4s,
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.member__works img:hover {
  opacity: 1;
  filter: saturate(1);
  transform: scale(1.05);
}

/* ============================================================
   フッター
   ============================================================ */
#footer {
  background: var(--black);
  color: rgba(255,255,255,0.6);
  padding: clamp(48px, 7vw, 80px) 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-logo img {
  height: 140px;
  width: auto;
  filter: invert(1);
  mix-blend-mode: screen;
  opacity: 0.9;
  transition: opacity 0.25s;
}
.footer-logo:hover img { opacity: 1; }

/* 浮き上がり（スプリング） */
.footer-social { display: flex; gap: 16px; }
.footer-social a {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.footer-social a:hover { transform: translateY(-5px); }
.footer-social img {
  height: 28px;
  width: auto;
  border-radius: 6px;
  transition: opacity 0.25s;
}
.footer-social a:hover img { opacity: 0.8; }

.footer-nav a {
  font-size: 11px;
  letter-spacing: 0.1em;
  opacity: 0.35;
  transition: opacity 0.25s;
}
.footer-nav a:hover { opacity: 0.8; }

.footer-copy {
  font-size: 10px;
  letter-spacing: 0.1em;
  opacity: 0.25;
}

/* ============================================================
   レスポンシブ（タブレット）
   ============================================================ */
@media (max-width: 960px) {
  .member__inner { grid-template-columns: 1fr; }
  .member__photo { aspect-ratio: 4 / 3; max-width: 360px; }
  .member__works { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================================
   レスポンシブ（スマートフォン）
   ============================================================ */
@media (max-width: 640px) {
  :root { --header-h: 80px; }
  .header-social { display: none; }

  /* フィーチャー：横スクロール＋スナップ */
  .features-track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 12px;
    padding: 0 clamp(20px, 5vw, 32px) 4px;
    /* グリッドを上書き */
    grid-template-columns: unset;
  }
  .features-track::-webkit-scrollbar { display: none; }

  .feature-card {
    flex: 0 0 78vw;
    scroll-snap-align: start;
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 2px 16px rgba(0,0,0,0.07);
  }

  .features-hint {
    display: flex;
  }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .info-table__row { grid-template-columns: 1fr; gap: 4px; padding: 16px 8px; }
  .member__works { grid-template-columns: repeat(2, 1fr); }
}