/* ═══════════════════════════════════════════════
   HIRAKOU — Global Styles
   Concept: Luxury Transport × Black × Orange
   Reference: CARTA ZERO × Premium Logistics
═══════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  /* Blacks — blue-shifted, like night asphalt */
  --black:    #07080C;
  --dark:     #0C0D13;
  --dark-2:   #10121A;
  --dark-3:   #171A24;
  --panel:    #1B1E2A;

  /* Steel / Gunmetal */
  --gunmetal: #21242F;
  --steel:    #2C3040;
  --steel-l:  #3C4055;

  /* Chrome */
  --chrome:   #505468;
  --silver:   #7A7E94;
  --silver-l: #A0A4BA;

  /* Brand */
  --orange:   #F47000;
  --orange-d: #C85C00;
  --o-subtle: rgba(244,112,0,0.07);

  /* Text */
  --white:    #EDECE8;
  --text:     rgba(237,236,232,0.88);
  --muted:    rgba(160,164,182,0.68);
  --dim:      rgba(160,164,182,0.24);
  --rule:     #1C1F2A;
  --border:   rgba(160,164,182,0.08);

  /* Typography */
  --ff-serif: 'Shippori Mincho B1', 'Yu Mincho', '游明朝', serif;
  --ff-jp:    'Noto Sans JP', -apple-system, 'Hiragino Kaku Gothic ProN', sans-serif;
  --ff-en:    'Inter', -apple-system, sans-serif;

  /* Backwards compat for opening CSS inline vars */
  --ff-cinzel: 'Inter', sans-serif;
  --ff-jp-s:   'Shippori Mincho B1', 'Yu Mincho', serif;

  /* Layout */
  --header-h: 68px;
  --max-w:    1200px;
  --gutter:   56px;
  --sec-v:    160px;
  --ease:     cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);

  /* Extended tokens (inner pages / utilities) */
  --text-muted:   rgba(160,164,182,0.62);
  --text-dim:     rgba(160,164,182,0.28);
  --gray-light:   #A0A4BA;
  --border-orange: rgba(244,112,0,0.26);
  --r:    4px;
  --r-lg: 8px;
  --transition: 0.22s ease;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-jp);
  background: var(--black);
  color: var(--text);
  font-size: 15px;
  line-height: 2.0;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body:not(.loaded) { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--ff-jp); }
ul, ol { list-style: none; }

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section     { padding: var(--sec-v) 0; }
.bg-black    { background: var(--black); }
.bg-dark     { background: var(--dark); }
.bg-dark2    { background: var(--dark-2); }
.bg-gunmetal { background: var(--gunmetal); }

/* ── Section Label System ──
   Usage: <p class="sec-tag">English Label</p>
          <h2 class="sec-title">日本語見出し</h2>
─────────────────────────────────────────────── */
.sec-tag {
  font-family: var(--ff-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: .40em;
  text-transform: uppercase;
  color: var(--silver);
  display: block;
  margin-bottom: 20px;
}
.sec-title {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(20px, 2.8vw, 28px);
  letter-spacing: .12em;
  color: var(--white);
  line-height: 1.7;
}

/* Legacy alias */
.sec-label {
  font-family: var(--ff-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: .40em;
  text-transform: uppercase;
  color: var(--silver);
  display: block;
  margin-bottom: 20px;
}

/* ── Inner page section labels (alias for sec-tag / sec-title) ── */
.section-header { margin-bottom: 48px; }
.section-en {
  font-family: var(--ff-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: .40em;
  text-transform: uppercase;
  color: var(--silver);
  display: block;
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(20px, 2.8vw, 28px);
  letter-spacing: .12em;
  color: var(--white);
  line-height: 1.7;
}
.accent-line {
  width: 28px;
  height: 1px;
  background: var(--orange);
}
.accent-line.center { margin: 0 auto; }

/* Inner page hero EN label */
.inner-hero-en {
  font-family: var(--ff-en);
  font-size: 10px;
  letter-spacing: .40em;
  color: var(--silver);
  text-transform: uppercase;
  display: block;
  margin-bottom: 32px;
}

/* ── Typography ── */
.h-display {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(32px, 5.5vw, 64px);
  letter-spacing: .14em;
  line-height: 1.75;
  color: var(--white);
}
.h-section {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: .12em;
  line-height: 1.8;
  color: var(--white);
}
.body-text {
  font-size: 14px;
  line-height: 2.3;
  letter-spacing: .06em;
  color: var(--muted);
}
.o-rule {
  width: 28px;
  height: 1px;
  background: var(--orange);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-family: var(--ff-en);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .26em;
  text-transform: uppercase;
  padding: 17px 44px;
  border: 1px solid rgba(244,112,0,0.45);
  color: var(--orange);
  background: transparent;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
  cursor: pointer;
}
.btn::after { content: '→'; font-size: 14px; letter-spacing: 0; }
.btn:hover  { background: var(--orange); color: var(--black); border-color: var(--orange); }
.btn:hover::after { transform: none; }

.btn-steel  { border-color: var(--steel-l); color: var(--silver-l); }
.btn-steel:hover { background: var(--steel); color: var(--white); border-color: var(--steel); }

.btn-solid,
.btn-orange { background: var(--orange); color: var(--black); border-color: var(--orange); }
.btn-solid:hover,
.btn-orange:hover { background: var(--orange-d); border-color: var(--orange-d); color: var(--white); }

.btn-outline { /* inherits base .btn (orange outline) */ }
.btn-sm { font-size: 10px; padding: 12px 28px; gap: 10px; }

/* ── Image Placeholder ── */
.img-ph, .img-placeholder {
  background: var(--panel);
  border: 1px solid var(--gunmetal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--chrome);
  font-size: 10px;
  font-family: var(--ff-en);
  letter-spacing: .14em;
  text-transform: uppercase;
  text-align: center;
  padding: 40px;
}
.img-ph-icon, .img-placeholder .ph-icon { font-size: 24px; opacity: .20; }

/* ══════════════════════════════════════
   HEADER
══════════════════════════════════════ */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--header-h);
  transition: background 0.5s var(--ease), border-color 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}
#header.scrolled {
  background: rgba(7,8,12,0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom-color: var(--rule);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
  display: grid;
  grid-template-columns: 180px 1fr 180px;
  align-items: center;
}
.header-logo { display: flex; align-items: center; }
.header-logo img { height: 28px; width: auto; }

.header-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}
.header-nav a {
  font-family: var(--ff-en);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .20em;
  text-transform: uppercase;
  color: var(--silver);
  transition: color 0.24s;
  padding: 4px 0;
  position: relative;
}
.header-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}
.header-nav a:hover,
.header-nav a.active { color: var(--white); }
.header-nav a:hover::after,
.header-nav a.active::after { transform: scaleX(1); }

.header-nav .nav-cta {
  font-family: var(--ff-en);
  color: var(--orange);
  border: 1px solid rgba(244,112,0,0.36);
  padding: 8px 20px;
  transition: background 0.26s, color 0.26s, border-color 0.26s;
}
.header-nav .nav-cta::after { display: none; }
.header-nav .nav-cta:hover { background: var(--orange); color: var(--black); border-color: var(--orange); }

.header-right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}
.header-contact {
  font-family: var(--ff-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--orange);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.22s;
}
.header-contact:hover { border-color: var(--orange); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 14px;
  padding: 0;
  z-index: 1001;
}
.hamburger span {
  display: block;
  height: 1px;
  background: var(--silver-l);
  transition: all .34s ease;
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* SP Nav */
.sp-nav {
  position: fixed;
  inset: 0;
  z-index: 850;
  background: var(--black);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 var(--gutter);
  transform: translateX(100%);
  transition: transform .48s cubic-bezier(0.77,0,0.175,1);
}
.sp-nav.open { transform: translateX(0); }
.sp-nav a {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: 28px;
  letter-spacing: .12em;
  color: var(--white);
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
  transition: color 0.24s;
  display: block;
}
.sp-nav a:first-child { border-top: 1px solid var(--rule); }
.sp-nav a:hover { color: var(--orange); }
.sp-nav .nav-cta-sp {
  color: var(--orange);
  font-size: 24px;
  margin-top: 32px;
  border-bottom: 1px solid var(--rule);
}

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
#footer {
  background: var(--dark);
  border-top: 1px solid var(--rule);
  padding: 96px 0 52px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 240px 1fr 200px;
  gap: 80px;
  align-items: start;
}
.footer-logo   { height: 26px; width: auto; margin-bottom: 24px; }
.footer-tagline {
  font-family: var(--ff-serif);
  font-size: 12px;
  color: var(--silver);
  line-height: 2.0;
  letter-spacing: .08em;
}
.footer-nav-heading, .footer-info-heading {
  font-family: var(--ff-en);
  font-size: 9px;
  letter-spacing: .38em;
  color: var(--orange);
  text-transform: uppercase;
  margin-bottom: 24px;
  font-weight: 400;
}
.footer-nav-list { display: grid; grid-template-columns: 1fr 1fr; }
.footer-nav-list a {
  font-size: 12px;
  color: var(--silver);
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  letter-spacing: .04em;
  transition: color 0.22s;
}
.footer-nav-list a:hover { color: var(--white); }

.footer-info address {
  font-style: normal;
  font-size: 12px;
  color: var(--silver);
  line-height: 2.3;
  letter-spacing: .04em;
}
.footer-info a:hover { color: var(--white); }

.footer-sns { display: flex; gap: 16px; margin-top: 24px; }
.footer-sns-link {
  color: var(--chrome);
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--ff-en);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  transition: color 0.22s;
}
.footer-sns-link:hover { color: var(--orange); }
.sns-icon {
  flex-shrink: 0;
  width: 15px;
  height: 15px;
  transition: opacity 0.22s;
}
.footer-sns-link:hover .sns-icon { opacity: 1; }

.footer-bottom {
  max-width: var(--max-w);
  margin: 64px auto 0;
  padding: 28px var(--gutter) 0;
  border-top: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy {
  font-family: var(--ff-en);
  font-size: 10px;
  color: var(--silver);
  letter-spacing: .10em;
}
.footer-bottom-nav { display: flex; gap: 28px; }
.footer-bottom-nav a {
  font-size: 10px;
  color: var(--silver);
  letter-spacing: .08em;
  transition: color 0.22s;
}
.footer-bottom-nav a:hover { color: var(--white); }

/* Footer column classes (index.html layout) */
.footer-top-line { display: none; }
.footer-nav-col h4, .footer-info-col h4 {
  font-family: var(--ff-en);
  font-size: 9px;
  letter-spacing: .38em;
  color: var(--orange);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 400;
}
.footer-nav-col a {
  display: block;
  font-size: 12px;
  color: var(--silver);
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  letter-spacing: .04em;
  transition: color 0.22s;
}
.footer-nav-col a:first-of-type { border-top: 1px solid var(--rule); }
.footer-nav-col a:hover { color: var(--white); }
.footer-info-col address {
  font-style: normal;
  font-size: 12px;
  color: var(--silver);
  line-height: 2.3;
  letter-spacing: .04em;
}
.footer-info-col a:hover { color: var(--white); }

/* ══════════════════════════════════════
   SCROLL REVEAL
   Refined — barely perceptible lift
══════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.26s; }
.reveal-delay-3 { transition-delay: 0.40s; }
.reveal-delay-4 { transition-delay: 0.54s; }

/* ══════════════════════════════════════
   INNER PAGE HERO
══════════════════════════════════════ */
.inner-hero {
  padding: calc(var(--header-h) + 100px) 0 100px;
  background: var(--black);
  border-bottom: 1px solid var(--rule);
}
.inner-hero-label {
  font-family: var(--ff-en);
  font-size: 10px;
  letter-spacing: .40em;
  color: var(--silver);
  text-transform: uppercase;
  margin-bottom: 32px;
}
.inner-hero-title {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(28px, 4.8vw, 52px);
  letter-spacing: .12em;
  line-height: 1.7;
  color: var(--white);
}
.inner-hero-sub {
  font-size: 13px;
  color: var(--muted);
  margin-top: 24px;
  line-height: 2.2;
  letter-spacing: .06em;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--silver);
  letter-spacing: .06em;
  margin-bottom: 40px;
}
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: var(--steel-l); }

/* ══════════════════════════════════════
   INSTAGRAM
══════════════════════════════════════ */
.ig-section { background: var(--gunmetal); }
.ig-follow-wrap {
  display: flex; align-items: center; gap: 20px;
  justify-content: center; flex-wrap: wrap; margin-bottom: 40px;
}
.ig-icon-wrap { color: var(--orange); display: flex; align-items: center; }
.ig-handle { font-size: 16px; color: var(--white); letter-spacing: .06em; }
.ig-follow-btn { min-width: 140px; text-align: center; }
.ig-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 2px; }
.ig-tile { aspect-ratio: 1; overflow: hidden; display: block; }
.ig-tile-inner { width: 100%; height: 100%; background: var(--steel); transition: opacity 0.26s; }
.ig-tile:hover .ig-tile-inner { opacity: 0.55; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 1024px) {
  :root { --gutter: 36px; --sec-v: 120px; }
  .header-inner { grid-template-columns: 160px 1fr 160px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --gutter: 24px; --sec-v: 80px; --header-h: 60px; }
  .hamburger { display: flex; }
  .header-nav, .header-right { display: none; }
  .header-inner { grid-template-columns: 1fr auto; }
  .footer-inner { grid-template-columns: 1fr; gap: 44px; }
  .footer-nav-list { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
  .footer-bottom-nav { flex-wrap: wrap; justify-content: center; }
  .ig-grid { grid-template-columns: repeat(3,1fr); }
}