/* ============================================================
   layout.css — ヘッダーナビ / ドロワー / フッター
   全ページ共通の骨格レイアウト
   ============================================================ */

/* 下層ページ: 固定ヘッダー分のトップ余白 */
/* ===== PAGE COMMON ===== */
main{display:block}
.page-body{padding-top:var(--header-height)}

/* HEADER / NAV */
#site-header{position:fixed;top:0;left:0;right:0;z-index:100}
#header-nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--side-pad);height:var(--header-height);
  background:rgba(255,255,255,0.97);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(0,0,0,0.1);
  gap:32px;
}
.nav-logo{text-decoration:none;flex-shrink:0}
.nav-logo-img{height:calc(var(--header-height) * 0.6);width:auto;display:block}
.nav-links{
  display:flex;align-items:center;gap:32px;
  justify-content:flex-end;flex:1;
}
.nav-links a{
  font-size:15px;font-weight:700;letter-spacing:0.06em;
  color:var(--text-secondary);text-decoration:none;
  transition:color .2s;white-space:nowrap;
  position:relative;padding-bottom:3px;
}
.nav-links a::after{
  content:'';position:absolute;bottom:0;left:0;
  width:100%;height:1.5px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--brand-deep)}
.nav-links a:hover::after{transform:scaleX(1)}

/* CONTACT のみ常時オレンジブロック（白文字）＋ホバーで薄い白マスク */
.nav-links a[href="./contact.html"]{
  background:var(--accent);color:#fff;
  padding:8px 20px;border-radius:4px;
  font-weight:700;transition:background .2s;
}
.nav-links a[href="./contact.html"]:hover{color:#fff}
/* ブランドグリーンの下線ホバー（::after）は CONTACT では非表示 */
.nav-links a[href="./contact.html"]::after{display:none}
/* 薄い白マスクは空いている ::before に載せる */
.nav-links a[href="./contact.html"]::before{
  content:'';position:absolute;inset:0;
  background:rgba(255,255,255,0);
  border-radius:4px;transition:background .25s;
  pointer-events:none;
}
.nav-links a[href="./contact.html"]:hover::before{background:rgba(255,255,255,0.2)}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-cta{
  color:var(--text-secondary);
  font-size:15px;font-weight:700;letter-spacing:0.06em;
  text-decoration:none;transition:color .2s;
  white-space:nowrap;position:relative;
  padding:0 0 3px 0;
  display:flex;align-items:center;
}
.nav-cta::after{
  content:'';position:absolute;bottom:0;left:0;
  width:100%;height:1.5px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-cta:hover{color:var(--brand-deep)}
.nav-cta:hover::after{transform:scaleX(1)}
.burger{
  width:40px;height:40px;cursor:pointer;
  display:none;flex-direction:column;justify-content:center;
  align-items:center;gap:6px;background:none;border:none;
  padding:0;flex-shrink:0;
}
.burger span{
  display:block;width:22px;height:1.5px;
  background:var(--text-primary);
  transition:transform .3s ease,opacity .3s ease,width .3s ease;
  transform-origin:center;
}
.burger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0;width:0}
.burger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* DRAWER */
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:99;
  width:320px;background:#fff;
  border-left:1px solid var(--border);
  transform:translateX(100%);
  transition:transform .4s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
  padding:100px 48px 56px;
}
.drawer.open{transform:translateX(0)}
.drawer-overlay{
  position:fixed;inset:0;z-index:98;
  background:rgba(0,0,0,0.25);
  opacity:0;pointer-events:none;
  transition:opacity .4s ease;
}
.drawer-overlay.open{opacity:1;pointer-events:all}
.drawer-links{list-style:none;flex:1}
.drawer-links li{border-bottom:1px solid var(--border-light)}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 0;font-size:15px;font-weight:700;
  letter-spacing:0.08em;text-decoration:none;
  color:var(--text-primary);text-transform:uppercase;
  transition:color .2s;
}
.drawer-links a:hover{color:var(--brand)}
.drawer-links a span{font-size:12px;color:var(--text-muted);font-weight:400;text-transform:none;letter-spacing:0}
.drawer-cta{margin-top:40px}
.drawer-cta a{
  display:block;text-align:center;
  background:var(--accent);color:#fff;
  padding:16px;font-size:14px;font-weight:700;
  letter-spacing:0.08em;text-decoration:none;border-radius:3px;
  transition:background .2s;
}
.drawer-cta a:hover{background:var(--accent-dark)}


/* ===== FOOTER ===== */
footer{
  background:var(--bg-dark);
  padding:64px var(--side-pad) 32px;
  border-top:1px solid var(--border);
}
.footer-inner{
  max-width:1600px;
  margin:0 auto;
}
.footer-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:64px;
}
.footer-logo-img{
  height:52px;
  display:block;
}
.footer-nav{
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:32px 48px;
}
.footer-col{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-link{
  font-size:13px;
  font-weight:500;
  color:var(--text-primary);
  text-decoration:none;
  transition:color .2s;
  display:block;
}
.footer-link:hover{
  color:var(--brand-deep);
}
.footer-link-parent{
  font-weight:700;
  margin-top:16px;
}
.footer-link-parent:first-child{
  margin-top:0;
}
.footer-link-sub{
  font-size:12px;
  color:var(--text-muted);
  padding-left:0;
}
.footer-link-sub:hover{
  color:var(--brand-deep);
}
.footer-link-nested{
  font-size:11px;
  color:var(--text-muted);
  opacity:0.8;
  padding-left:24px;
}
.footer-link-nested:hover{
  color:var(--brand-deep);
  opacity:1;
}

/* footer bottom */
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid var(--border);
  display:flex;
  justify-content:flex-end;
}
.footer-copy{
  font-size:12px;
  color:var(--text-muted);
}

/* レスポンシブ */
@media(max-width:1024px){
  .footer-top{
    flex-direction:column;
    gap:32px;
  }
  .footer-nav{
    grid-template-columns:1fr 1fr 1fr;
    gap:24px 32px;
  }
}

@media(max-width:768px){
  footer{
    padding:48px 24px 24px;
  }
  .footer-top{
    gap:24px;
  }
  .footer-nav{
    grid-template-columns:1fr 1fr;
    gap:16px 20px;
  }
  .footer-link{
    font-size:12px;
  }
  .footer-link-sub{
    font-size:11px;
  }
  .footer-link-nested{
    font-size:10px;
    padding-left:20px;
  }
  .footer-bottom{
    margin-top:32px;
    padding-top:16px;
  }
}