/* ============================================================================
   Japan Bike Hub — layout.css  (loader, navigation, footer)
   ============================================================================ */

/* Loader */
.loader{ position:fixed; inset:0; z-index:9999; background:var(--ink); display:grid; place-items:center; transition:opacity .8s var(--ease), visibility .8s; }
.loader.is-done{ opacity:0; visibility:hidden; }
.loader__inner{ text-align:center; width:min(80vw,420px); }
.loader__brand{ font-family:var(--font-jp); font-weight:900; font-size:clamp(1.6rem,4vw,2.4rem); letter-spacing:.12em; margin-bottom:1.6rem; }
.loader__bar{ height:2px; background:rgba(255,255,255,.12); border-radius:2px; overflow:hidden; }
.loader__bar span{ display:block; height:100%; width:0; background:var(--grad-blue); box-shadow:0 0 14px var(--glow); }
.loader__pct{ font-family:var(--font-en); margin-top:1rem; color:var(--silver-dim); letter-spacing:.2em; }

/* Navigation */
.nav{ position:fixed; inset:0 0 auto 0; z-index:900; transition:transform .5s var(--ease), background .5s, backdrop-filter .5s, border-color .5s; border-bottom:1px solid transparent; }
.nav.is-scrolled{ background:rgba(9,10,13,.72); backdrop-filter:blur(10px) saturate(120%); -webkit-backdrop-filter:blur(10px) saturate(120%); border-color:var(--line); }
.nav.is-hidden{ transform:translateY(-100%); }
.nav__wrap{ width:min(100% - 2.4rem, 1560px); margin-inline:auto; height:78px; display:flex; align-items:center; gap:2rem; }
.nav__brand{ display:flex; align-items:center; gap:.7rem; margin-right:auto; }
.nav__brand-mark{ width:14px; height:14px; border-radius:4px; background:var(--grad-blue); box-shadow:0 0 16px var(--glow); transform:rotate(45deg); }
.nav__brand-jp{ font-weight:900; font-size:1.15rem; letter-spacing:.08em; }
.nav__brand-en{ font-family:var(--font-en); font-size:.62rem; letter-spacing:.34em; color:var(--silver-dim); align-self:flex-end; padding-bottom:.28rem; }
.nav__menu{ display:flex; gap:2.2rem; }
.nav__link{ position:relative; font-size:.95rem; color:var(--silver); padding:.3rem 0; transition:color .3s; }
.nav__link::after{ content:""; position:absolute; left:0; bottom:-2px; width:0; height:1px; background:var(--blue); transition:width .35s var(--ease); }
.nav__link:hover,.nav__link.is-active{ color:var(--white); }
.nav__link:hover::after,.nav__link.is-active::after{ width:100%; }
.nav__cta{ margin-left:.5rem; }
.nav__burger{ display:none; width:44px; height:44px; border:1px solid var(--line-2); border-radius:12px; align-items:center; justify-content:center; flex-direction:column; gap:5px; }
.nav__burger span{ width:20px; height:2px; background:var(--white); transition:transform .35s,opacity .3s; }
.nav__burger.is-open span:nth-child(1){ transform:translateY(3.5px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2){ transform:translateY(-3.5px) rotate(-45deg); }

/* Footer */
.footer{ position:relative; padding:var(--sp-7) 0 2rem; background:linear-gradient(180deg, var(--ink) 0%, #06070a 100%); border-top:1px solid var(--line); overflow:hidden; }
.footer__glow{ position:absolute; top:-40%; left:50%; transform:translateX(-50%); width:70vw; height:60vh; background:radial-gradient(closest-side, rgba(30,127,255,.18), transparent); filter:blur(30px); pointer-events:none; }
.footer__grid{ position:relative; width:min(100% - 2.4rem, var(--container)); margin-inline:auto; display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:clamp(1.2rem,3vw,2.6rem); padding-bottom:3rem; }
.footer__brand{ font-weight:900; font-size:1.6rem; letter-spacing:.08em; }
.footer__tag{ color:var(--blue); margin:.6rem 0; font-family:var(--font-en); letter-spacing:.05em; }
.footer__catch{ color:var(--silver-dim); max-width:34ch; }
.footer__social{ display:flex; gap:.6rem; margin-top:1.4rem; }
.footer__social a{ width:42px; height:42px; display:grid; place-items:center; border:1px solid var(--line-2); border-radius:12px; font-family:var(--font-en); font-size:.72rem; color:var(--silver); transition:.3s; }
.footer__social a:hover{ background:var(--blue); color:#04122b; border-color:var(--blue); transform:translateY(-3px); }
.footer__col h4{ font-size:.82rem; letter-spacing:.24em; text-transform:uppercase; color:var(--silver-dim); margin-bottom:1.1rem; font-family:var(--font-en); }
.footer__col a{ display:block; color:var(--silver); padding:.32rem 0; transition:color .3s,transform .3s; }
.footer__col a:hover{ color:var(--white); transform:translateX(4px); }
.footer__addr{ color:var(--silver-dim); font-size:.9rem; margin-top:.6rem; }
.footer__form{ display:flex; gap:.5rem; margin-top:.4rem; }
.footer__form input{ flex:1; background:var(--ink-3); border:1px solid var(--line-2); border-radius:12px; padding:.8rem 1rem; }
.footer__form input:focus{ border-color:var(--blue); }
.footer__note{ color:var(--blue); font-size:.85rem; min-height:1.4em; margin-top:.5rem; }
.footer__bottom{ position:relative; width:min(100% - 2.4rem, var(--container)); margin-inline:auto; padding-top:1.6rem; border-top:1px solid var(--line); display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; color:var(--silver-dim); font-size:.82rem; }