/* ============================================================
   Enjy LP — base.css
   デザイン方針：しっとり × 明るい
   低コントラスト / ソフトライト / パール質感 / たっぷり余白
   ============================================================ */

:root{
  /* Brand */
  --pink:   #FF6FA5;
  --purple: #8B7CFF;
  --aqua:   #5FD4FF;

  /* Base（純白は使わない。紫みのある淡色でしっとり感を出す） */
  --bg:        #FBF9FF;
  --bg-2:      #F5F0FC;
  --bg-3:      #F2ECFA;
  --card:      #FFFFFF;

  /* Text（黒は使わない。濃い紫でやわらかく） */
  --ink:       #3A2E52;
  --ink-2:     #6B5E88;
  --ink-3:     #9A8FB5;

  /* Line / Shadow（影は黒じゃなく紫みで） */
  --line:      rgba(139,124,255,.14);
  --line-2:    rgba(139,124,255,.24);
  --sh-sm:     0 4px 16px rgba(112,88,180,.06);
  --sh:        0 18px 44px rgba(112,88,180,.10);
  --sh-lg:     0 34px 90px rgba(112,88,180,.16);

  /* Gradient */
  --grad:      linear-gradient(100deg, var(--pink) 0%, var(--purple) 52%, var(--aqua) 100%);
  --grad-soft: linear-gradient(100deg, rgba(255,111,165,.18) 0%, rgba(139,124,255,.18) 52%, rgba(95,212,255,.18) 100%);

  /* Type */
  --f-min:  "Shippori Mincho", "Yu Mincho", "YuMincho", serif;
  --f-go:   "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --f-en:   "Jost", "Zen Kaku Gothic New", sans-serif;

  /* Layout */
  --wrap: 1160px;
  --pad:  clamp(20px, 5vw, 40px);
  --sec:  clamp(96px, 14vw, 180px);
}

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--f-go);
  font-weight:400;
  color:var(--ink);
  background:var(--bg);
  line-height:1.9;
  letter-spacing:.04em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,p{ margin:0; }
button,input{ font:inherit; color:inherit; }

/* 背景に敷く3Dキャンバス */
#bg-canvas{
  position:fixed; inset:0; width:100%; height:100%;
  z-index:-2; pointer-events:none; opacity:0;
  transition:opacity 1.4s ease;
}
#bg-canvas.is-ready{ opacity:1; }

/* スクロールに応じて色が移り変わる下地（3Dが動かない端末のフォールバックも兼ねる） */
body::before{
  content:""; position:fixed; inset:0; z-index:-3; pointer-events:none;
  background:
    radial-gradient(60vw 50vh at 12% 8%,  rgba(255,111,165,.20), transparent 62%),
    radial-gradient(58vw 48vh at 88% 22%, rgba(139,124,255,.20), transparent 62%),
    radial-gradient(64vw 54vh at 50% 62%, rgba(95,212,255,.16),  transparent 66%),
    radial-gradient(50vw 46vh at 20% 92%, rgba(255,111,165,.14), transparent 64%),
    var(--bg);
}
/* 粒子感（バンディング防止＋しっとり質感） */
body::after{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  opacity:.16; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/><feColorMatrix type='saturate' values='0'/></filter><rect width='140' height='140' filter='url(%23n)' opacity='.42'/></svg>");
}

/* ---------- スクロール進行度 ---------- */
.progress{
  position:fixed; top:0; left:0; right:0; height:2px; z-index:120; pointer-events:none;
}
.progress span{
  display:block; height:100%; width:100%; transform:scaleX(0); transform-origin:left;
  background:var(--grad);
  transition:transform .18s linear;
}

/* ---------- 共通パーツ ---------- */
.wrap{ width:min(var(--wrap), 100% - var(--pad)*2); margin-inline:auto; }

.sec-label{
  font-family:var(--f-en); font-weight:400; font-size:.78rem;
  letter-spacing:.34em; text-transform:uppercase;
  color:var(--ink-3); margin-bottom:1.6em;
  display:flex; align-items:center; gap:.9em;
}
.sec-label::after{
  content:""; width:56px; height:1px;
  background:linear-gradient(90deg, var(--line-2), transparent);
}
.sec-title{
  font-family:var(--f-min); font-weight:600;
  font-size:clamp(1.7rem, 4.2vw, 2.9rem);
  line-height:1.62; letter-spacing:.06em;
  margin-bottom:.9em;
}
.sec-lead{
  color:var(--ink-2); font-size:clamp(.92rem,1.6vw,1rem);
  line-height:2.1; margin-bottom:3.4em;
}

/* ---------- button ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5em;
  padding:1.02em 2.5em; border-radius:999px;
  font-family:var(--f-go); font-weight:500; font-size:.94rem;
  letter-spacing:.09em; white-space:nowrap; cursor:pointer;
  border:0; transition:transform .5s cubic-bezier(.2,.8,.2,1), box-shadow .5s, opacity .4s;
}
.btn--primary{
  color:#fff; background:var(--grad); background-size:180% 100%;
  box-shadow:0 12px 32px rgba(255,111,165,.28), 0 4px 12px rgba(139,124,255,.20);
  transition:transform .5s cubic-bezier(.2,.8,.2,1), box-shadow .5s, background-position 1.1s ease;
}
.btn--primary:hover{
  transform:translateY(-3px); background-position:100% 0;
  box-shadow:0 20px 46px rgba(255,111,165,.34), 0 6px 18px rgba(139,124,255,.24);
}
.btn--ghost{
  color:var(--ink); background:rgba(255,255,255,.62);
  border:1px solid var(--line-2);
  -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
}
.btn--ghost:hover{ transform:translateY(-3px); box-shadow:var(--sh-sm); background:rgba(255,255,255,.86); }
.btn--sm{ padding:.76em 1.7em; font-size:.84rem; }
.btn--pill{
  color:#fff; background:var(--grad);
  box-shadow:0 8px 22px rgba(255,111,165,.24);
}
.btn--pill:hover{ transform:translateY(-2px); box-shadow:0 14px 30px rgba(255,111,165,.32); }

/* ---------- header ---------- */
.header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  transition:background .5s, box-shadow .5s, backdrop-filter .5s, padding .5s;
  padding:18px 0;
}
.header.is-stuck{
  background:rgba(251,249,255,.72);
  -webkit-backdrop-filter:blur(22px) saturate(1.6);
  backdrop-filter:blur(22px) saturate(1.6);
  box-shadow:0 1px 0 var(--line), 0 10px 34px rgba(112,88,180,.06);
  padding:10px 0;
}
.header__inner{
  width:min(var(--wrap), 100% - var(--pad)*2); margin-inline:auto;
  display:flex; align-items:center; gap:clamp(16px,4vw,44px);
}
.brand{ display:flex; align-items:center; gap:.55em; margin-right:auto; }
.brand__mark{ width:34px; height:34px; object-fit:contain; }
.brand__name{
  font-family:var(--f-en); font-weight:500; font-size:1.42rem; letter-spacing:.02em;
  background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.brand__dot{ -webkit-text-fill-color:var(--pink); color:var(--pink); }

.nav{ display:flex; gap:clamp(14px,2.4vw,30px); }
.nav a{
  font-size:.85rem; color:var(--ink-2); letter-spacing:.1em;
  position:relative; padding:.3em 0; transition:color .4s;
}
.nav a::after{
  content:""; position:absolute; left:0; bottom:0; width:100%; height:1px;
  background:var(--grad); transform:scaleX(0); transform-origin:right;
  transition:transform .55s cubic-bezier(.2,.8,.2,1);
}
.nav a:hover{ color:var(--ink); }
.nav a:hover::after{ transform:scaleX(1); transform-origin:left; }

/* ---------- footer ---------- */
.footer{
  position:relative; padding:clamp(60px,9vw,96px) 0 44px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,0), rgba(255,255,255,.5));
}
.footer__inner{
  width:min(var(--wrap), 100% - var(--pad)*2); margin-inline:auto;
  display:flex; flex-direction:column; align-items:center; gap:1.1em; text-align:center;
}
.brand--f .brand__mark{ width:46px; height:46px; }
.brand--f{ margin-right:0; flex-direction:column; gap:.4em; }
.footer__tag{ font-family:var(--f-min); color:var(--ink-2); letter-spacing:.22em; font-size:.9rem; }
.footer__nav{ display:flex; flex-wrap:wrap; justify-content:center; gap:1.4em; margin-top:.6em; }
.footer__nav a{ font-size:.82rem; color:var(--ink-2); transition:color .4s; }
.footer__nav a:hover{ color:var(--pink); }
.footer__copy{ font-family:var(--f-en); font-size:.74rem; color:var(--ink-3); letter-spacing:.14em; margin-top:1em; }

/* ---------- scroll reveal ---------- */
.reveal{
  opacity:0; transform:translateY(34px);
  transition:opacity 1.15s cubic-bezier(.2,.8,.2,1), transform 1.15s cubic-bezier(.2,.8,.2,1);
  will-change:opacity, transform;
}
.reveal.is-in{ opacity:1; transform:none; }

/* ---------- 表示制御 ---------- */
.pc{ display:inline; }
.sp{ display:none; }
@media (max-width:820px){
  .pc{ display:none; }
  .sp{ display:inline; }
  .nav{ display:none; }
  body{ line-height:1.85; }
}

/* ---------- アクセシビリティ ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.001ms !important; animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{ opacity:1; transform:none; }
}
:focus-visible{ outline:2px solid var(--purple); outline-offset:3px; border-radius:6px; }