/* =====================================================
   layout.css — container, header, footer, sections
   ===================================================== */

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--content-pad-x);
  padding-right: var(--content-pad-x);
}

main { display: block; }

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  transition: box-shadow var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--border-warm);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo { display: flex; align-items: center; }
.logo-img { width: 180px; height: auto; }

.nav-list { display: flex; align-items: center; gap: 1.75rem; }
.nav-list a {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}
.nav-list a:hover { color: var(--primary); opacity: 1; }

.header-cta { padding: 0.55rem 1.25rem; font-size: 0.9rem; }

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none; border: none; cursor: pointer;
}
.menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text-main); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* spacer so fixed header doesn't overlap content */
body { padding-top: var(--header-h); }

/* ---- Sections ---- */
.section { padding: var(--sp-2xl) 0; }
.section-sm { padding: var(--sp-xl) 0; }
.section-alt { background: var(--bg-cream); }

.section-head { text-align: center; margin-bottom: var(--sp-lg); }
.section-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 800;
  line-height: 1.4;
}
.section-lead {
  margin: 0.75rem auto 0;
  max-width: 640px;
  color: var(--text-light);
  font-size: 1rem;
}

/* ---- Footer ---- */
.footer { background: var(--footer-bg); color: #fff; margin-top: var(--sp-2xl); }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-xl);
  justify-content: space-between;
  padding-top: var(--sp-xl);
  padding-bottom: var(--sp-lg);
}
.footer-brand { max-width: 360px; }
.footer-logo-img { width: 200px; height: auto; }
.footer-tagline { margin-top: 1rem; font-size: 0.85rem; line-height: 1.9; color: rgba(255,255,255,0.75); }
.footer-slogan { margin-top: 0.5rem; font-size: 1.5rem; color: var(--primary); }

.footer-nav { display: flex; flex-wrap: wrap; gap: var(--sp-xl); }
.footer-nav-label {
  font-weight: 700; font-size: 0.8rem; letter-spacing: 0.08em;
  color: rgba(255,255,255,0.55); margin-bottom: 0.85rem; text-transform: uppercase;
}
.footer-nav-list li { margin-bottom: 0.6rem; }
.footer-nav-list a { font-size: 0.9rem; color: rgba(255,255,255,0.9); }
.footer-nav-list a:hover { color: var(--primary); opacity: 1; }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); }
.footer-bottom-inner {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem;
  justify-content: space-between; align-items: center;
  padding-top: 1.25rem; padding-bottom: 1.5rem;
}
.footer-copy, .footer-trademark { color: rgba(255,255,255,0.6); font-size: 0.75rem; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav { display: none; }
  .header-cta { display: none; }
  .menu-toggle { display: flex; }

  /* Mobile drawer when toggled open */
  .nav.is-open {
    display: block;
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-warm);
    box-shadow: var(--shadow-md);
  }
  .nav.is-open .nav-list {
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 0.5rem var(--content-pad-x) 1rem;
  }
  .nav.is-open .nav-list li { border-bottom: 1px solid var(--border-warm); }
  .nav.is-open .nav-list a { display: block; padding: 0.9rem 0; }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .footer-inner { flex-direction: column; gap: var(--sp-lg); }
  .footer-nav { gap: var(--sp-lg); }
}