/* ════════════════════════════════════════════════
   layout.css — ヘッダー・フッター・コンテナ・グリッド
   ════════════════════════════════════════════════ */

/* ── Body base ─────────────────────────────────── */
html {
  overflow-x: hidden;
}

body {
  font-family: var(--f-sans);
  font-size: var(--fs-base);
  font-weight: var(--fw-light);
  color: var(--c-text);
  background-color: var(--c-bg);
  line-height: var(--lh-normal);
  overflow-x: hidden;
}

/* ── Container ──────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--page-side); /* 48px desktop */
}

.container--narrow { max-width: var(--container-narrow); }
.container--wide   { max-width: var(--container-wide); }

@media (max-width: 768px) {
  .container { padding-inline: var(--sp-6); }
  .section { padding-block: var(--sp-14); }
}

@media (max-width: 480px) {
  .section { padding-block: var(--sp-12); }
}

/* ── Section ────────────────────────────────────── */
.section {
  padding-block: var(--section-gap);
  position: relative;
}

.section .container {
  position: relative;
  z-index: 1;
}

.section--alt {
  background-color: var(--c-bg-alt);
  border-top: 1px solid rgba(42, 39, 35, 0.06);
  border-bottom: 1px solid rgba(42, 39, 35, 0.06);
}

.section--panel {
  background-color: var(--c-bg-panel);
}

.section--warm {
  background-color: var(--c-bg-alt);
  border-top: 1px solid rgba(42, 39, 35, 0.06);
  border-bottom: 1px solid rgba(42, 39, 35, 0.06);
}

.section--dark {
  background-color: var(--c-dark);
  color: var(--c-on-dark);
  position: relative;
  overflow: hidden;
}

/* 水引ディバイダー / Mizuhiki divider */
.mizuhiki-divider {
  padding-inline: var(--page-side);
  max-width: var(--container-max);
  margin-inline: auto;
  overflow: hidden;
}

.mizuhiki-divider img,
.mizuhiki-divider svg {
  display: block;
  width: 100%;
  height: 34px;
}

/* ── Grid ───────────────────────────────────────── */
.grid           { display: grid; gap: var(--sp-6); }
.grid--2        { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3        { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4        { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 768px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ── Flex utilities ─────────────────────────────── */
.flex           { display: flex; }
.flex--center   { align-items: center; justify-content: center; }
.flex--between  { align-items: center; justify-content: space-between; }
.flex--gap      { gap: var(--sp-4); }


/* ════════════════════════════════════════════════
   HEADER
   ════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  border-bottom: 1px solid rgba(42, 39, 35, 0.10);
  transition: box-shadow var(--tr-base);
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(244, 238, 226, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: -1;
  pointer-events: none;
}

.site-header.scrolled {
  box-shadow: 0 1px 16px rgba(42, 39, 35, 0.07);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

/* Logo */
.header-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.logo-crane {
  width: 42px;
  height: 34px;
  flex-shrink: 0;
}

.logo-full {
  height: 84px;
  width: auto;
  display: block;
  flex-shrink: 0;
  margin-block: -6px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 3px;
}

.logo-ja {
  font-family: var(--f-serif);
  font-size: 19px;
  font-weight: var(--fw-medium);
  color: var(--c-dark);
  letter-spacing: 0.16em;
}

.logo-en {
  font-family: var(--f-accent);
  font-size: 10px;
  font-weight: var(--fw-normal);
  color: var(--c-gold-dark);
  letter-spacing: var(--ls-accent);
  text-transform: uppercase;
}

/* Navigation */
.header-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-link {
  display: block;
  padding: var(--sp-2) var(--sp-4);
  font-family: var(--f-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-normal);
  color: var(--c-text);
  letter-spacing: var(--ls-wide);
  transition: color var(--tr-fast);
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--sp-4);
  right: var(--sp-4);
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transition: transform var(--tr-base);
  transform-origin: left;
}

.nav-link:hover { color: var(--c-dark); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link.active { color: var(--c-dark); }

.nav-cta { margin-left: var(--sp-5); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 13px 26px;
  font-family: var(--f-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-normal);
  letter-spacing: 0.14em;
  border-radius: var(--r-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--tr-base), color var(--tr-base),
              border-color var(--tr-base), box-shadow var(--tr-base),
              transform var(--tr-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }

/* Dark (墨) fill — primary CTA */
.btn-dark {
  background: var(--c-dark);
  color: var(--c-on-dark);
  border-color: var(--c-dark);
}
.btn-dark:hover {
  background: color-mix(in srgb, var(--c-dark) 80%, #000);
  border-color: color-mix(in srgb, var(--c-dark) 80%, #000);
  box-shadow: 0 14px 30px rgba(42, 39, 35, 0.32);
}

/* Gold fill */
.btn-gold {
  background: var(--c-gold);
  color: var(--c-bg);
  border-color: var(--c-gold);
}
.btn-gold:hover {
  background: var(--c-gold-dark);
  border-color: var(--c-gold-dark);
  box-shadow: 0 14px 30px rgba(156, 127, 69, 0.35);
}

/* Gold outline */
.btn-outline {
  background: transparent;
  color: var(--c-dark);
  border-color: var(--c-gold);
}
.btn-outline:hover {
  background: var(--c-gold-pale);
  box-shadow: 0 12px 26px rgba(156, 127, 69, 0.22);
}

/* Light outline (on dark bg) */
.btn-outline-light {
  background: transparent;
  color: var(--c-on-dark);
  border-color: rgba(251, 248, 240, 0.6);
}
.btn-outline-light:hover {
  background: rgba(251, 248, 240, 0.10);
  border-color: var(--c-gold-light);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
}

/* Beni fill (CTA section) */
.btn-beni-fill {
  background: var(--c-bg-alt);
  color: var(--c-beni);
  border-color: transparent;
}
.btn-beni-fill:hover {
  background: #ffffff;
  box-shadow: 0 14px 30px rgba(176, 72, 79, 0.28);
}

/* Legacy aliases */
.btn-primary   { background: var(--c-dark); color: var(--c-on-dark); border-color: var(--c-dark); }
.btn-primary:hover { background: color-mix(in srgb, var(--c-dark) 80%, #000); border-color: color-mix(in srgb, var(--c-dark) 80%, #000); box-shadow: 0 14px 30px rgba(42, 39, 35, 0.32); }
.btn-secondary { background: transparent; color: var(--c-dark); border-color: var(--c-gold); }
.btn-secondary:hover { background: var(--c-gold-pale); box-shadow: 0 12px 26px rgba(156, 127, 69, 0.22); }
.btn-ghost     { background: transparent; color: var(--c-on-dark); border-color: rgba(251, 248, 240, 0.6); }
.btn-ghost:hover { background: rgba(251, 248, 240, 0.10); border-color: var(--c-gold-light); box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22); }

/* LINE CTA */
.btn-line {
  background: #06C755;
  color: #fff;
  border-color: #06C755;
  gap: var(--sp-2);
}
.btn-line:hover {
  background: #05a847;
  border-color: #05a847;
  box-shadow: 0 14px 30px rgba(6, 199, 85, 0.35);
}
.btn-line svg { flex-shrink: 0; }

/* Diagnosis CTA — gradient fill, lifts further + scales on hover */
.btn-diag {
  background: linear-gradient(100deg, var(--c-gold) 0%, var(--c-beni) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 10px 26px rgba(176, 72, 79, 0.32);
}
.btn-diag:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 18px 38px rgba(176, 72, 79, 0.44);
  background: linear-gradient(100deg, var(--c-gold-dark) 0%, var(--c-beni) 100%);
}
.btn-diag:active {
  transform: translateY(-1px) scale(0.98);
}

/* Sizes */
.btn-sm  { padding: 9px 20px; font-size: var(--fs-sm); letter-spacing: 0.14em; }
.btn-lg  { padding: 17px 42px; font-size: var(--fs-base); letter-spacing: 0.16em; }
.btn-xl  { padding: 17px 46px; font-size: var(--fs-base); letter-spacing: 0.16em; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  transition: background var(--tr-fast);
}

.hamburger:hover { background: var(--c-gold-pale); }

.hamburger-bar {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--c-dark);
  border-radius: 1px;
  transition: transform var(--tr-base), opacity var(--tr-base);
}

.hamburger.is-open .hamburger-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.is-open .hamburger-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.is-open .hamburger-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile nav overlay */
@media (max-width: 900px) {
  .hamburger { display: flex; }

  .header-nav {
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0; bottom: 0;
    background: rgba(244, 238, 226, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    justify-content: center;
    transform: translateX(100%);
    transition: transform var(--tr-slow);
    z-index: var(--z-overlay);
  }

  .header-nav.is-open { transform: translateX(0); }

  .nav-list {
    flex-direction: column;
    gap: 0;
    width: 100%;
    padding: var(--sp-8) var(--sp-6);
    text-align: center;
  }

  .nav-list li { width: 100%; }

  .nav-link {
    font-size: var(--fs-lg);
    padding: var(--sp-4);
    display: block;
    text-align: center;
  }

  .nav-cta { margin-left: 0; margin-top: var(--sp-4); width: 100%; text-align: center; }
  .nav-cta .btn { width: 100%; max-width: 280px; }
}


/* ════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════ */
.site-footer {
  background-color: var(--c-dark);
  color: var(--c-on-dark-muted);
  padding-top: var(--sp-20);
  padding-bottom: var(--sp-8);
  position: relative;
  overflow: hidden;
}

.footer-crane-deco {
  position: absolute;
  right: -40px;
  bottom: -20px;
  width: 380px;
  opacity: 0.06;
  pointer-events: none;
  z-index: 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--sp-12);
  padding-bottom: var(--sp-10);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
  z-index: 1;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: var(--sp-5);
}

.footer-logo--brand {
  display: inline-block;
  background: var(--c-bg);
  padding: 6px 14px 6px 10px;
  margin-bottom: var(--sp-5);
}

.logo-full-footer {
  height: 56px;
  width: auto;
  display: block;
}

.footer-logo .logo-crane {
  width: 44px;
  height: 35px;
}

.footer-logo .logo-ja {
  font-family: var(--f-serif);
  font-size: 20px;
  font-weight: var(--fw-medium);
  letter-spacing: 0.16em;
  color: var(--c-on-dark);
}

.footer-logo .logo-en {
  font-family: var(--f-accent);
  font-size: 10px;
  letter-spacing: var(--ls-accent);
  color: var(--c-gold-light);
  margin-top: 3px;
}

.footer-tagline {
  font-size: var(--fs-sm);
  color: var(--c-on-dark-muted);
  line-height: 2;
  font-weight: var(--fw-light);
}

.footer-badge {
  display: inline-block;
  margin-top: var(--sp-4);
  font-family: var(--f-accent);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-accent);
  color: var(--c-gold-light);
  border: 1px solid rgba(218, 201, 161, 0.3);
  padding: 4px var(--sp-4);
  border-radius: var(--r-sm);
}

.footer-nav-title {
  font-family: var(--f-serif);
  font-size: var(--fs-sm);
  color: var(--c-on-dark);
  letter-spacing: 0.10em;
  margin-bottom: var(--sp-5);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer-nav a {
  font-size: var(--fs-sm);
  color: var(--c-on-dark-muted);
  letter-spacing: var(--ls-wide);
  font-weight: var(--fw-light);
  transition: color var(--tr-fast);
}

.footer-nav a:hover { color: var(--c-on-dark); }

.footer-cta {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.footer-cta p {
  font-size: var(--fs-sm);
  line-height: var(--lh-snug);
  font-weight: var(--fw-light);
}

.footer-bottom {
  padding-top: var(--sp-8);
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-bottom p {
  font-family: var(--f-accent);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--c-on-dark-subtle);
}

.footer-legal-links {
  margin-top: var(--sp-2);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--sp-3);
}

.footer-legal-links a {
  color: var(--c-on-dark-subtle);
  text-decoration: none;
  transition: color var(--tr-base);
}

.footer-legal-links a:hover {
  color: var(--c-gold-light);
}

.footer-legal-links span {
  opacity: 0.4;
}

main { padding-top: var(--header-height); }

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }
}


/* ── Scroll reveal ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--tr-slow), transform var(--tr-slow);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }


/* ════════════════════════════════════════════════
   PAGE HERO — inner pages
   ════════════════════════════════════════════════ */
.page-hero {
  background-color: var(--c-bg);
  padding: var(--sp-16) 0 var(--sp-10);
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(42, 39, 35, 0.08);
}

.page-hero__en {
  display: inline-block;
  font-family: var(--f-serif);
  font-size: 15px;
  font-weight: var(--fw-normal);
  letter-spacing: 0.16em;
  color: var(--c-gold-dark);
  margin-bottom: var(--sp-4);
  border: 1px solid rgba(184, 154, 91, 0.4);
  padding: 5px 22px;
  border-radius: var(--r-sm);
}

.page-hero__title {
  font-family: var(--f-serif);
  font-size: var(--fs-5xl);
  font-weight: var(--fw-medium);
  color: var(--c-dark);
  letter-spacing: 0.08em;
  line-height: var(--lh-tight);
  margin-bottom: var(--sp-5);
}

.page-hero__line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  width: 200px;
  height: 20px;
  margin-inline: auto;
  margin-bottom: var(--sp-6);
  position: relative;
}

.page-hero__line::before {
  content: '';
  position: absolute;
  top: 50%; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent 0%, var(--c-gold) 20%, var(--c-gold) 80%, transparent 100%);
  transform: translateY(-50%);
  opacity: 0.5;
}

.page-hero__line::after {
  content: '◈';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.55rem;
  color: var(--c-gold);
  background: var(--c-bg);
  padding: 0 4px;
}

.page-hero__desc {
  font-size: var(--fs-md);
  font-weight: var(--fw-light);
  color: var(--c-text-muted);
  max-width: 560px;
  margin-inline: auto;
  line-height: var(--lh-loose);
}

@media (max-width: 768px) {
  .page-hero { padding: var(--sp-12) 0 var(--sp-8); }
  .page-hero__title { font-size: var(--fs-4xl); }
  .page-hero__desc { padding-inline: var(--sp-6); }
}