/* =========================================================
   しずの湯 相模原 — Website
   曙湯フォーマット踏襲 / ブランドカラー：花緑青 #52B3AE
   ========================================================= */

:root{
  --teal:#52B3AE;          /* 花緑青 */
  --teal-deep:#3C8F8A;
  --ink:#23211e;           /* 文字 */
  --ink-soft:#6b6864;
  --paper:#f7f5f1;         /* 生成りの白 */
  --paper-2:#efece6;
  --charcoal:#2a2926;      /* 濃グレー背景 */
  --charcoal-soft:#3a3935;
  --line:#dcd8d1;
  --line-dark:rgba(255,255,255,.18);

  --serif:"Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --gothic:"Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --latin:"Lato", sans-serif;

  --maxw:1280px;
  --pad:clamp(20px, 5vw, 80px);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--gothic);
  color:var(--ink);
  background:var(--paper);
  line-height:1.9;
  font-weight:300;
  letter-spacing:.04em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}

/* ---------- 共通：ラベル / 見出し ---------- */
.label{
  font-family:var(--latin);
  font-size:.72rem;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--teal);
  margin-bottom:1.1em;
  font-weight:400;
}
.jp-head{
  font-family:var(--serif);
  font-weight:500;
  font-size:clamp(1.6rem, 3.4vw, 2.5rem);
  line-height:1.5;
  letter-spacing:.08em;
  color:var(--ink);
}
.body{
  font-size:.95rem;
  line-height:2.15;
  color:var(--ink-soft);
}
.body p{margin-bottom:1.4em;}

/* =========================================================
   サイドナビ（縦書き・PC固定）
   ========================================================= */
.sidenav{
  position:fixed;
  top:0; right:0;
  height:100vh;
  display:flex;
  align-items:center;
  z-index:50;
  padding-right:clamp(20px,2.6vw,42px);
  pointer-events:none;
  mix-blend-mode:difference;   /* 背景の明暗に応じて白黒反転 */
}
.sidenav ul{
  list-style:none;
  display:flex;
  flex-direction:row-reverse;
  gap:1.4em;
}
.sidenav a{
  pointer-events:auto;
  writing-mode:vertical-rl;
  font-family:var(--serif);
  font-size:.9rem;
  letter-spacing:.28em;
  color:#fff;                  /* difference により可読化 */
  padding:.3em 0;
  transition:opacity .3s;
}
.sidenav a:hover{opacity:.55;}

/* =========================================================
   モバイルヘッダー
   ========================================================= */
.mobile-head{display:none;}
.mobile-menu{display:none;}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;
  min-height:100vh;
  padding:clamp(40px,7vh,90px) var(--pad) 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  background:var(--paper);
}
.hero-tag{
  position:absolute;
  top:clamp(40px,7vh,90px);
  left:clamp(20px,4vw,60px);
  writing-mode:vertical-rl;
  font-family:var(--serif);
  font-size:.9rem;
  letter-spacing:.3em;
  color:var(--ink-soft);
}
.hero-logo{
  text-align:center;
  margin-top:clamp(30px,8vh,80px);
  display:flex;
  flex-direction:column;
  align-items:center;
}
.hero-logo .latin-top{
  font-family:var(--latin);
  font-size:.74rem;
  letter-spacing:.5em;
  color:var(--teal);
  margin-bottom:1.4em;
  padding-left:.5em;
}
.hl-symbol{
  width:clamp(86px,11vw,128px);
  margin-bottom:.5em;
}
.hl-type{
  width:clamp(180px,24vw,300px);
}
.hero-logo .latin-bottom{
  font-family:var(--latin);
  font-size:.7rem;
  letter-spacing:.55em;
  color:var(--ink-soft);
  margin-top:1.4em;
  padding-left:.55em;
}
.hero-photo{
  width:100vw;
  margin-top:clamp(36px,6vh,72px);
  flex:1;
  min-height:46vh;
  overflow:hidden;
}
.hero-photo img{
  width:100%;height:100%;
  object-fit:cover;
  object-position:center 60%;
}
.scroll-cue{
  position:absolute;
  bottom:18px; left:50%;
  transform:translateX(-50%);
  font-family:var(--latin);
  font-size:.62rem;
  letter-spacing:.3em;
  color:#fff;
  mix-blend-mode:difference;
}
.scroll-cue span{animation:cue 2s ease-in-out infinite;display:inline-block;}
@keyframes cue{0%,100%{opacity:.3;transform:translateY(0);}50%{opacity:1;transform:translateY(4px);}}

/* =========================================================
   CONCEPT
   ========================================================= */
.concept{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(40px,6vw,96px);
  align-items:center;
  padding:clamp(80px,12vh,160px) var(--pad);
  max-width:var(--maxw);
  margin-inline:auto;
}
.concept-media{
  position:relative;
  aspect-ratio:4/5;
  overflow:hidden;
  background:var(--paper-2);
}
.cm-slides{position:absolute;inset:0;}
.cm-slides img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:0;
  transition:opacity 1s ease;
}
.cm-slides img.active{opacity:1;}
.cm-vertical{
  position:absolute;
  top:24px; left:20px;
  writing-mode:vertical-rl;
  font-family:var(--serif);
  font-size:clamp(1rem,1.5vw,1.25rem);
  letter-spacing:.24em;
  color:#fff;
  text-shadow:0 1px 14px rgba(0,0,0,.45);
}
.cm-ctrl{
  position:absolute;
  right:14px; bottom:14px;
  display:flex; gap:8px;
}
.cm-ctrl button{
  width:40px;height:40px;
  border:none;
  background:rgba(255,255,255,.85);
  color:var(--ink);
  font-size:1.2rem;
  cursor:pointer;
  transition:background .3s;
}
.cm-ctrl button:hover{background:#fff;}
.concept-text .jp-head{margin-bottom:1.5em;}

/* =========================================================
   FACILITY（濃グレー背景）
   ========================================================= */
.facility{
  background:var(--charcoal);
  color:#efece6;
  position:relative;
  padding-bottom:clamp(80px,12vh,150px);
}
.fac-hero{
  width:60%;
  margin-left:auto;
  aspect-ratio:16/8;
  overflow:hidden;
}
.fac-hero img{width:100%;height:100%;object-fit:cover;}
.fac-intro{
  max-width:560px;
  padding:clamp(50px,8vh,90px) var(--pad) clamp(50px,7vh,80px);
}
.fac-intro .jp-head{color:#fff;margin-bottom:1em;}
.fac-intro .body{color:#c8c4bc;}
.fac-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(16px,2vw,28px);
  padding-inline:var(--pad);
  max-width:var(--maxw);
  margin-inline:auto;
}
.fac-cards--4{grid-template-columns:repeat(4,1fr);}
@media (max-width:1100px) and (min-width:881px){
  .fac-cards--4{grid-template-columns:repeat(2,1fr);}
}
.fac-cards figure{margin:0;}
.fac-cards .fc-img{
  aspect-ratio:3/4;
  overflow:hidden;
  background:var(--charcoal-soft);
}
.fac-cards .fc-img img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1.2s ease;
}
.fac-cards figure:hover .fc-img img{transform:scale(1.05);}
.fac-cards figcaption{padding:1.4em .2em 0;}
.fac-cards h3{
  font-family:var(--serif);
  font-weight:500;
  font-size:1.15rem;
  letter-spacing:.1em;
  margin-bottom:.7em;
  color:#fff;
}
.fac-cards figcaption p{
  font-size:.85rem;
  line-height:1.95;
  color:#b6b2aa;
}

/* =========================================================
   INFORMATION（ご利用案内・濃グレー）
   ========================================================= */
.info{
  background:var(--charcoal);
  color:#efece6;
  padding:clamp(20px,4vh,40px) var(--pad) clamp(80px,12vh,150px);
}
.info-head, .news-head{
  max-width:var(--maxw);
  margin:0 auto clamp(30px,5vh,56px);
}
.info-head .jp-head{color:#fff;}
.info-list{
  max-width:var(--maxw);
  margin-inline:auto;
}
.info-list .row{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:clamp(20px,4vw,60px);
  padding:clamp(24px,4vh,38px) 0;
  border-top:1px solid var(--line-dark);
}
.info-list .row:last-child{border-bottom:1px solid var(--line-dark);}
.info-list dt{
  font-family:var(--serif);
  font-size:1.05rem;
  letter-spacing:.12em;
  color:#fff;
}
.info-list dd{
  font-size:.92rem;
  line-height:2.1;
  color:#d4d0c8;
}
.note{font-size:.8rem;color:#9a968e;line-height:1.9;display:inline-block;margin-top:.4em;}

/* =========================================================
   ACCESS（店舗情報・生成り）
   ========================================================= */
.access{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:stretch;
  background:var(--paper);
}
.access-text{
  padding:clamp(70px,11vh,150px) var(--pad);
  max-width:640px;
  margin-left:auto;
}
.access-text dl{margin:2em 0 1.6em;}
.access-text .row{
  display:grid;
  grid-template-columns:90px 1fr;
  gap:24px;
  padding:1.05em 0;
  border-bottom:1px solid var(--line);
}
.access-text dt{
  font-family:var(--serif);
  font-size:.92rem;
  letter-spacing:.1em;
  color:var(--ink);
}
.access-text dd{font-size:.9rem;color:var(--ink-soft);line-height:1.85;}
.map-link{
  display:inline-block;
  font-family:var(--latin);
  font-size:.82rem;
  letter-spacing:.16em;
  color:var(--teal-deep);
  border-bottom:1px solid var(--teal);
  padding-bottom:3px;
  transition:opacity .3s;
}
.map-link:hover{opacity:.6;}
.access-map{min-height:420px;}
.access-map iframe{width:100%;height:100%;min-height:420px;border:0;filter:grayscale(.2);}

/* =========================================================
   NEWS
   ========================================================= */
.news{
  padding:clamp(80px,12vh,150px) var(--pad);
  max-width:var(--maxw);
  margin-inline:auto;
}
.news-head{margin-bottom:clamp(24px,4vh,40px);}
.news-body{
  max-width:760px;
  border-top:1px solid var(--line);
  padding-top:clamp(28px,4vh,44px);
}
.news-lead{font-size:.95rem;color:var(--ink-soft);margin-bottom:1.8em;line-height:2.1;}
.news-ig{
  display:inline-flex;
  align-items:center;
  gap:.8em;
  font-family:var(--latin);
  font-size:1.05rem;
  letter-spacing:.1em;
  color:var(--ink);
  border:1px solid var(--ink);
  padding:.9em 1.8em;
  border-radius:40px;
  transition:all .35s;
}
.news-ig:hover{background:var(--ink);color:var(--paper);}
.news-ig .arrow{color:var(--teal);}
.news-ig:hover .arrow{color:var(--paper);}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{
  background:var(--charcoal);
  color:#cfcbc3;
  padding:clamp(60px,9vh,100px) var(--pad);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2.6em;
  text-align:center;
}
.foot-logo{display:flex;flex-direction:column;align-items:center;}
.fl-symbol{width:64px;margin-bottom:.6em;}
.fl-type{width:150px;}
.fl-store{
  font-family:var(--serif);
  font-size:.8rem;
  letter-spacing:.4em;
  color:#fff;
  margin-top:.9em;
  padding-left:.4em;
}
.foot-meta{display:flex;flex-direction:column;align-items:center;gap:1.2em;}
.foot-meta a{
  font-family:var(--latin);
  letter-spacing:.2em;
  font-size:.82rem;
  border-bottom:1px solid var(--teal);
  padding-bottom:3px;
  transition:opacity .3s;
}
.foot-meta a:hover{opacity:.6;}
.copy{
  font-family:var(--latin);
  font-size:.68rem;
  letter-spacing:.14em;
  color:#827e76;
}

/* =========================================================
   スクロール・フェードイン
   ========================================================= */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s ease, transform 1s ease;}
.reveal.in{opacity:1;transform:none;}

/* =========================================================
   レスポンシブ
   ========================================================= */
@media (max-width:880px){
  .sidenav{display:none;}
  .mobile-head{
    display:flex;
    position:fixed;top:0;left:0;right:0;
    height:62px;
    align-items:center;justify-content:space-between;
    padding:0 20px;
    background:rgba(247,245,241,.92);
    backdrop-filter:blur(8px);
    z-index:60;
  }
  .mh-logo img{height:34px;width:auto;}
  .mh-toggle{
    width:38px;height:38px;border:none;background:none;cursor:pointer;
    display:flex;flex-direction:column;justify-content:center;gap:6px;
  }
  .mh-toggle span{display:block;height:1.5px;background:var(--ink);transition:.3s;}
  .mh-toggle.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}
  .mh-toggle.open span:nth-child(2){opacity:0;}
  .mh-toggle.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}

  .mobile-menu{
    display:block;
    position:fixed;top:62px;left:0;right:0;
    background:var(--paper);
    transform:translateY(-120%);
    transition:transform .4s ease;
    z-index:55;
    box-shadow:0 16px 40px rgba(0,0,0,.08);
  }
  .mobile-menu.open{transform:translateY(0);}
  .mobile-menu ul{list-style:none;}
  .mobile-menu li{border-bottom:1px solid var(--line);}
  .mobile-menu a{
    display:block;padding:1.1em 28px;
    font-family:var(--serif);letter-spacing:.12em;font-size:1rem;
  }

  .hero{padding-top:90px;min-height:auto;}
  .hero-tag{display:none;}

  .concept{grid-template-columns:1fr;gap:36px;}
  .concept-media{aspect-ratio:4/3;order:-1;}

  .fac-hero{width:100%;aspect-ratio:16/9;}
  .fac-cards,.fac-cards--4{grid-template-columns:1fr;gap:36px;}
  .fac-cards .fc-img{aspect-ratio:16/10;}

  .info-list .row{grid-template-columns:1fr;gap:8px;}
  .access{grid-template-columns:1fr;}
  .access-text{margin:0;max-width:none;}
  .access-map{min-height:340px;}
  .access-map iframe{min-height:340px;}
}

@media (max-width:480px){
  .news-ig{font-size:.92rem;padding:.8em 1.4em;}
  .info-list dt,.access-text dt{font-size:.95rem;}
}