/* ============================================================
   EXTRA GOLF — Brand Top Page
   Design DNA: 黒×ゴールド / editorial-luxury / 写真主体
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600&family=Noto+Serif+JP:wght@500;600&family=Noto+Sans+JP:wght@300;400;500;600;700&display=swap');

:root {
  --black: #0a0a0a;
  --dark: #141414;
  --dark2: #1c1c1c;
  --gold: #c9a96e;
  --gold-light: #e8d4a8;
  --gold-dim: rgba(201, 169, 110, 0.14);
  --gold-border: rgba(201, 169, 110, 0.28);
  --gold-border-strong: rgba(201, 169, 110, 0.55);
  --gold-glow: rgba(201, 169, 110, 0.2);
  --white: #f5f5f0;
  --gray: #b4b4ac;
  --gray-dim: #7a7a72;
  --font-display: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --font-heading: 'Noto Serif JP', serif;
  --font-body: 'Noto Sans JP', sans-serif;
  --radius: 4px;
  --ease: cubic-bezier(0.25, 0.6, 0.3, 1);
  --shadow-gold: 0 0 28px var(--gold-glow);
}

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

html { scroll-behavior: smooth; font-size: 17px; scroll-padding-top: 4.5rem; }

body {
  font-family: var(--font-body);
  background: var(--black);
  color: var(--white);
  line-height: 1.85;
  font-weight: 300;
}

a { color: var(--gold); text-decoration: none; transition: color 0.25s var(--ease); }
a:hover { color: var(--gold-light); }
img { display: block; max-width: 100%; }
::selection { background: var(--gold); color: var(--black); }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* ── スクロール連動の出現アニメーション ──
   JSが有効なとき（html.js）だけ初期非表示にする。JS無効でも内容は見える */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ── Header（透明→スクロールで黒） ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), padding 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--gold-border);
  padding: 0.7rem 1.5rem;
}

.logo a {
  color: var(--gold);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.24em;
  font-size: 1.3rem;
  line-height: 1.2;
}

.logo .sub {
  display: block;
  font-family: var(--font-body);
  font-weight: 300;
  color: rgba(245, 245, 240, 0.75);
  font-size: 0.62rem;
  letter-spacing: 0.4em;
  margin-top: 0.15rem;
  text-transform: uppercase;
}

.nav-links { display: flex; align-items: center; gap: 0.2rem; list-style: none; }

.nav-links a {
  display: block;
  padding: 0.45rem 0.75rem;
  font-size: 0.86rem;
  color: var(--white);
  letter-spacing: 0.06em;
}

.nav-links a:hover { color: var(--gold-light); }

.nav-links .nav-cta a {
  margin-left: 0.5rem;
  background: linear-gradient(135deg, var(--gold), #a88b4a);
  color: var(--black);
  font-weight: 600;
  border-radius: var(--radius);
  padding: 0.5rem 1.15rem;
}

.nav-links .nav-cta a:hover { filter: brightness(1.1); color: var(--black); }

.nav-toggle {
  display: none;
  background: rgba(10, 10, 10, 0.5);
  border: 1px solid var(--gold-border-strong);
  border-radius: var(--radius);
  color: var(--gold);
  width: 2.6rem;
  height: 2.6rem;
  font-size: 1.15rem;
  cursor: pointer;
}

@media (max-width: 920px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10, 10, 10, 0.97);
    border-bottom: 1px solid var(--gold-border);
    padding: 0.5rem 1.25rem 1.25rem;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.85rem 0.4rem; border-bottom: 1px solid rgba(201, 169, 110, 0.1); font-size: 0.98rem; }
  .nav-links .nav-cta a { margin: 0.85rem 0 0; text-align: center; border-bottom: none; }
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero .bg {
  position: absolute;
  inset: 0;
  background-image: url('photos/hero_main.jpg?v=20260802');
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  animation: heroZoom 14s var(--ease) forwards;
}

@keyframes heroZoom { to { transform: scale(1); } }

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(10, 10, 10, 0.35), rgba(10, 10, 10, 0.55) 55%, var(--black) 100%),
    radial-gradient(900px 400px at 50% 20%, rgba(201, 169, 110, 0.12), transparent 65%);
}

.hero-inner { position: relative; z-index: 2; padding: 6rem 1.5rem 4rem; max-width: 60rem; }

.hero .eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  color: var(--gold-light);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  border-top: 1px solid var(--gold-border-strong);
  border-bottom: 1px solid var(--gold-border-strong);
  padding: 0.45rem 0.2rem 0.45rem 0.7rem;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.5;
  margin-bottom: 1.1rem;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.6);
}

.hero .lead {
  color: rgba(245, 245, 240, 0.85);
  font-size: clamp(0.98rem, 2vw, 1.1rem);
  letter-spacing: 0.08em;
  margin-bottom: 2.25rem;
}

.hero .cta-row { justify-content: center; }

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--gold);
  font-size: 0.68rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  padding-bottom: 3.2rem;
}

.scroll-cue::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 1px;
  height: 2.6rem;
  background: linear-gradient(var(--gold), transparent);
  animation: cueDrop 2.2s ease-in-out infinite;
  transform-origin: top;
}

@keyframes cueDrop { 0% { transform: scaleY(0); } 45% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ── 共通レイアウト ── */
.section { padding: 5rem 1.5rem; }
.section-inner { max-width: 1080px; margin: 0 auto; }

.section-head { text-align: center; margin-bottom: 3rem; }

.section-head .en {
  display: block;
  font-family: var(--font-display);
  color: var(--gold);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.section-head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  font-weight: 600;
  letter-spacing: 0.12em;
}

.section-head .desc { color: var(--gray); margin-top: 0.9rem; font-size: 0.98rem; }

/* ── Stats band ── */
.stats {
  border-top: 1px solid var(--gold-border);
  border-bottom: 1px solid var(--gold-border);
  background: var(--dark);
  padding: 2.25rem 1.5rem;
}

.stats-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem 1rem;
  text-align: center;
}

@media (min-width: 720px) { .stats-inner { grid-template-columns: repeat(4, 1fr); } }

.stat .num {
  font-family: var(--font-display);
  color: var(--gold-light);
  font-size: 2.1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.stat .label { color: var(--gray); font-size: 0.85rem; letter-spacing: 0.12em; margin-top: 0.3rem; }

/* ── 店舗カード ── */
.store-grid { display: grid; gap: 1.25rem; }

@media (min-width: 640px) { .store-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .store-grid { grid-template-columns: repeat(4, 1fr); } }

.store-card {
  position: relative;
  display: block;
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--dark);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.store-card:hover { border-color: var(--gold); transform: translateY(-3px); box-shadow: var(--shadow-gold); }

/* 3:2 の横長枠で室内の広がりを見せる（4:3だと狭く見える） */
.store-card .ph { overflow: hidden; aspect-ratio: 3 / 2; }

.store-card .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.store-card:hover .ph img { transform: scale(1.06); }

.store-card .body { padding: 1.1rem 1.2rem 1.25rem; }

.store-card .en {
  font-family: var(--font-display);
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.store-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 0.2rem 0 0.4rem;
}

.store-card p { color: var(--gray); font-size: 0.88rem; line-height: 1.7; }

/* ── 設備（全幅の横長写真バンド・文字は写真の上） ──
   写真は撮影されたままの横長の広がりを最優先。枠での切り抜きはしない */
.feature-band {
  position: relative;
  width: 100%;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  min-height: clamp(340px, 44vw, 560px);
  border-top: 1px solid var(--gold-border);
  border-bottom: 1px solid var(--gold-border);
  margin-bottom: 2px;
}

/* 文字を読ませるための暗がり（左寄せ用） */
.feature-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(0deg, rgba(10, 10, 10, 0.72), transparent 55%),
    linear-gradient(90deg, rgba(10, 10, 10, 0.62), rgba(10, 10, 10, 0.12) 55%, transparent);
}

.feature-band.rev::before {
  background:
    linear-gradient(0deg, rgba(10, 10, 10, 0.72), transparent 55%),
    linear-gradient(270deg, rgba(10, 10, 10, 0.62), rgba(10, 10, 10, 0.12) 55%, transparent);
}

.feature-band-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 2.25rem;
}

.feature-band .num {
  font-family: var(--font-display);
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.35em;
}

.feature-band h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 2.8vw, 1.7rem);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin: 0.4rem 0 0.75rem;
  line-height: 1.6;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.7);
}

.feature-band p {
  color: rgba(245, 245, 240, 0.88);
  font-size: 0.98rem;
  max-width: 34em;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.7);
}

/* 右寄せバンド（交互リズム） */
.feature-band.rev .feature-band-inner { display: flex; flex-direction: column; align-items: flex-end; text-align: right; }
.feature-band.rev p { max-width: 34em; }

@media (max-width: 720px) {
  .feature-band { min-height: 300px; }
  .feature-band.rev .feature-band-inner { align-items: flex-start; text-align: left; }
  .feature-band.rev::before {
    background:
      linear-gradient(0deg, rgba(10, 10, 10, 0.72), transparent 55%),
      linear-gradient(90deg, rgba(10, 10, 10, 0.62), rgba(10, 10, 10, 0.12) 55%, transparent);
  }
}

/* ── 料金サマリー ── */
.price-grid { display: grid; gap: 1.1rem; }
@media (min-width: 760px) { .price-grid { grid-template-columns: repeat(3, 1fr); } }

.price-card {
  background: linear-gradient(160deg, var(--dark2), var(--dark));
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  text-align: center;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.price-card:hover { border-color: var(--gold); transform: translateY(-3px); box-shadow: var(--shadow-gold); }

.price-card .en {
  font-family: var(--font-display);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.price-card h3 { font-family: var(--font-heading); font-size: 1.1rem; font-weight: 600; margin: 0.4rem 0 0.9rem; letter-spacing: 0.08em; }

.price-card .price {
  font-family: var(--font-display);
  color: var(--gold-light);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.2;
}

.price-card .price .unit { font-size: 0.85rem; color: var(--gray); font-family: var(--font-body); font-weight: 300; letter-spacing: 0.05em; }
.price-card .note { color: var(--gray-dim); font-size: 0.82rem; margin-top: 0.7rem; }

.price-foot { text-align: center; color: var(--gray-dim); font-size: 0.85rem; margin-top: 1.5rem; }
.price-foot a { text-decoration: underline; text-underline-offset: 3px; }

/* ── キャンペーン帯 ── */
.campaign-band {
  position: relative;
  border-top: 1px solid var(--gold-border-strong);
  border-bottom: 1px solid var(--gold-border-strong);
  background:
    linear-gradient(rgba(16, 14, 10, 0.88), rgba(16, 14, 10, 0.88)),
    url('photos/facility_sim.jpg?v=20260802') center / cover;
  text-align: center;
  padding: 4rem 1.5rem;
}

.campaign-band .en {
  font-family: var(--font-display);
  color: var(--gold);
  letter-spacing: 0.5em;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
}

.campaign-band h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3.8vw, 2.2rem);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin: 0.6rem 0 1rem;
}

.campaign-band .benefits {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem 1rem;
  margin: 1.25rem 0 2rem;
  list-style: none;
}

.campaign-band .benefits li {
  border: 1px solid var(--gold-border-strong);
  border-radius: 999px;
  color: var(--gold-light);
  padding: 0.45rem 1.2rem;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  background: rgba(10, 10, 10, 0.45);
}

/* ── 入会ステップ ── */
.flow-grid { display: grid; gap: 1.1rem; counter-reset: flow; }
@media (min-width: 760px) { .flow-grid { grid-template-columns: repeat(3, 1fr); } }

.flow-card {
  position: relative;
  background: var(--dark);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
  padding: 2.1rem 1.5rem 1.6rem;
}

.flow-card::before {
  counter-increment: flow;
  content: '0' counter(flow);
  position: absolute;
  top: -0.9rem;
  left: 1.2rem;
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--gold);
  background: var(--black);
  padding: 0 0.5rem;
  line-height: 1;
}

.flow-card h3 { font-family: var(--font-heading); font-size: 1.05rem; font-weight: 600; letter-spacing: 0.08em; margin-bottom: 0.6rem; }
.flow-card p { color: var(--gray); font-size: 0.92rem; }

/* ── FAQ ── */
.faq { max-width: 760px; margin: 0 auto; }

.accordion { border: 1px solid var(--gold-border); border-radius: var(--radius); overflow: hidden; }
.accordion details + details { border-top: 1px solid rgba(201, 169, 110, 0.16); }

.accordion summary {
  cursor: pointer;
  list-style: none;
  padding: 1.05rem 3rem 1.05rem 1.3rem;
  font-size: 0.99rem;
  position: relative;
  transition: background 0.25s var(--ease);
}

.accordion summary::-webkit-details-marker { display: none; }

.accordion summary::after {
  content: '＋';
  position: absolute;
  right: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
}

.accordion details[open] summary::after { content: '－'; }
.accordion summary:hover { background: rgba(201, 169, 110, 0.06); }
.accordion .acc-body { padding: 0 1.3rem 1.2rem; color: var(--gray); font-size: 0.95rem; }
.faq-foot { text-align: center; margin-top: 1.5rem; color: var(--gray-dim); font-size: 0.88rem; }
.faq-foot a { text-decoration: underline; text-underline-offset: 3px; }

/* ── ボタン ── */
.cta-row { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 2rem;
  background: linear-gradient(135deg, var(--gold), #a88b4a);
  color: var(--black);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  transition: filter 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.btn:hover { filter: brightness(1.1); transform: translateY(-1px); box-shadow: var(--shadow-gold); color: var(--black); }
.btn-outline { background: transparent; border: 1px solid var(--gold); color: var(--gold); }
.btn-outline:hover { background: var(--gold-dim); color: var(--gold); filter: none; }

/* ── 最終CTA ── */
.final-cta {
  text-align: center;
  padding: 5.5rem 1.5rem;
  background: radial-gradient(700px 320px at 50% 0%, rgba(201, 169, 110, 0.1), transparent 70%);
}

.final-cta h2 { font-family: var(--font-heading); font-size: clamp(1.5rem, 3.6vw, 2.1rem); font-weight: 600; letter-spacing: 0.12em; margin-bottom: 1rem; }
.final-cta p { color: var(--gray); margin-bottom: 2rem; }
.final-cta .cta-row { justify-content: center; }

/* ── Footer ── */
.site-footer { border-top: 1px solid var(--gold-border); padding: 2.5rem 1.5rem 2.75rem; color: var(--gray-dim); font-size: 0.86rem; }
.footer-inner { max-width: 1080px; margin: 0 auto; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; margin-bottom: 1.5rem; }
.footer-nav a { color: var(--gray); font-size: 0.86rem; }
.footer-nav a:hover { color: var(--gold); }
.footer-note a { color: var(--gray); text-decoration: underline; text-underline-offset: 3px; }

/* ── Back to top ── */
.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 2.9rem;
  height: 2.9rem;
  border: 1px solid var(--gold-border-strong);
  border-radius: 50%;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(8px);
  color: var(--gold);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
  z-index: 90;
}

.to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--gold); color: var(--black); }

@media (max-width: 720px) {
  html { font-size: 16px; }
  .section { padding: 3.5rem 1.25rem; }
}