/* ========================================
   竹タオルサイト 共通CSS
   12ページで重複していたルールを集約
   生成日: 2026-05-02
======================================== */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Serif JP', serif;
  background: var(--linen);
  color: var(--sumi);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }

img { display: block; max-width: 100%; height: auto; }

:root {
  --bamboo:      #3D6B4F;
  --bamboo-dark: #2A4D38;
  --linen:       #FAF7F2;
  --washi:       #F2EDE3;
  --terra:       #C47A4A;
  --sumi:        #2B2520;
  --sumi-light:  #5C5550;
  --gold:        rgba(196, 122, 74, 0.25);
  --washi-line:  rgba(43, 37, 32, 0.08);

  --space-xs:  8px;
  --space-sm:  16px;
  --space-md:  32px;
  --space-lg:  56px;
  --space-xl:  80px;
  --space-2xl: 120px;
  --max-width: 1100px;
  --container-padding: 56px;
  --container-padding-sp: 20px;
}

.container { max-width: var(--max-width); margin: 0 auto; }

.section { padding: var(--space-2xl) var(--container-padding); }

@media (max-width: 768px) {
  .section { padding: var(--space-xl) var(--container-padding-sp); }
}

.section--linen  { background: var(--linen); }

.section--washi  { background: var(--washi); }

.section--bamboo { background: var(--bamboo); color: var(--washi); }

.en-label {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 12px;
  color: var(--terra);
  letter-spacing: 0.25em;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(22px, 2.8vw, 36px);
  font-weight: 300;
  letter-spacing: 0.12em;
  line-height: 1.8;
  margin-bottom: 10px;
}

.section-lead {
  font-size: 14px;
  font-weight: 300;
  color: var(--sumi-light);
  line-height: 2.4;
  letter-spacing: 0.04em;
}

.divider-line {
  width: 36px;
  height: 1px;
  background: var(--terra);
  margin: 12px auto;
}

.section-head { text-align: center; margin-bottom: var(--space-lg); }

.btn-primary {
  display: inline-block;
  background: var(--bamboo);
  color: var(--washi);
  font-family: 'Noto Serif JP', serif;
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 0.18em;
  padding: 16px 48px;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: background 0.2s ease;
}

.btn-primary:hover { background: var(--bamboo-dark); }

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--bamboo);
  font-family: 'Noto Serif JP', serif;
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 0.15em;
  padding: 15px 47px;
  border: 1px solid var(--bamboo);
  border-radius: 0;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-outline:hover { background: var(--bamboo); color: var(--washi); }

.site-nav {
  background: var(--linen);
  border-bottom: 1px solid var(--gold);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 16px var(--container-padding);
  gap: var(--space-md);
}

.site-nav-links { display: flex; gap: var(--space-md); align-items: center; }

.site-nav-links a {
  font-size: 12px;
  font-weight: 300;
  color: var(--sumi-light);
  letter-spacing: 0.12em;
  transition: color 0.2s;
  white-space: nowrap;
}

.site-nav-links a:hover,
.site-nav-links a[aria-current="page"] { color: var(--bamboo); }

.site-nav-logo { text-align: center; }

.site-nav-logo-jp {
  display: block;
  font-size: 17px;
  font-weight: 500;
  color: var(--sumi);
  letter-spacing: 0.3em;
  line-height: 1;
}

.site-nav-logo-en {
  display: block;
  font-family: 'Playfair Display', serif;
  font-size: 10px;
  font-style: italic;
  color: var(--sumi-light);
  letter-spacing: 0.2em;
  margin-top: 4px;
}

.site-nav-cta { display: flex; justify-content: flex-end; align-items: center; }

.site-nav-cta a {
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--washi);
  background: var(--bamboo);
  padding: 9px 20px;
  transition: background 0.2s;
  white-space: nowrap;
}

.site-nav-cta a:hover { background: var(--bamboo-dark); }

.hamburger-btn { display: none; }

.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(43, 37, 32, 0.45);
  z-index: 200;
}

.drawer-overlay.open { display: block; }

.drawer {
  position: fixed;
  top: 0;
  right: -280px;
  width: 280px;
  height: 100%;
  background: var(--linen);
  z-index: 201;
  transition: right 0.3s ease;
  padding: var(--space-lg) var(--space-md);
  overflow-y: auto;
}

.drawer.open { right: 0; }

.drawer-close { display: flex; justify-content: flex-end; margin-bottom: var(--space-lg); }

.drawer-close-btn { background: none; border: none; font-size: 20px; color: var(--sumi-light); cursor: pointer; }

.drawer-nav a {
  display: block;
  font-size: 14px;
  font-weight: 300;
  color: var(--sumi);
  letter-spacing: 0.15em;
  padding: 14px 0;
  border-bottom: 1px solid var(--washi-line);
  transition: color 0.2s;
}

.drawer-nav a:hover,
.drawer-nav a[aria-current="page"] { color: var(--bamboo); }

.drawer-cta { margin-top: var(--space-md); }

.drawer-cta a {
  display: block;
  text-align: center;
  background: var(--bamboo);
  color: var(--washi);
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0.15em;
  padding: 14px;
  transition: background 0.2s;
}

.drawer-cta a:hover { background: var(--bamboo-dark); }

.nav-item { position: relative; display: inline-flex; align-items: center; }

.nav-item--has-submenu > a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.nav-item--has-submenu > a::after {
  content: "▾";
  font-size: 9px;
  opacity: 0.55;
  transform: translateY(1px);
}

.nav-submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--linen, #FAF7F2);
  border: 1px solid rgba(43, 37, 32, 0.08);
  box-shadow: 0 8px 24px rgba(43, 37, 32, 0.10);
  padding: 8px 0;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0.18s;
  z-index: 1000;
}

.nav-item--has-submenu:hover .nav-submenu,
.nav-item--has-submenu:focus-within .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0s;
}

.nav-submenu a {
  display: block;
  padding: 8px 20px;
  font-size: 12px;
  font-weight: 300;
  color: var(--sumi-light, #5a5a5a);
  letter-spacing: 0.10em;
  white-space: nowrap;
}

.nav-submenu a:hover,
.nav-submenu a[aria-current="page"] { color: var(--bamboo); }

.drawer-nav a.drawer-nav-sub {
  font-size: 12px;
  padding-left: 18px;
  color: var(--sumi-light, #6e6e6e);
  letter-spacing: 0.12em;
}

@media (max-width: 768px) {
  .site-nav-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 14px var(--container-padding-sp);
    position: relative;
  }
  .site-nav-links, .site-nav-cta { display: none; }
  .hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: absolute;
    right: var(--container-padding-sp);
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 18px;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
  }
  .hamburger-btn span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--sumi);
  }
}

.breadcrumb {
  background: var(--washi);
  padding: 12px var(--container-padding);
  border-bottom: 1px solid var(--gold);
}

.breadcrumb-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  gap: var(--space-xs);
  align-items: center;
  font-size: 11px;
  font-weight: 300;
  color: var(--sumi-light);
  letter-spacing: 0.08em;
}

.breadcrumb-inner a { color: var(--sumi-light); transition: color 0.2s; }

.breadcrumb-inner a:hover { color: var(--bamboo); }

.breadcrumb-sep { color: var(--gold); }

@media (max-width: 768px) {
  .breadcrumb { padding: 12px var(--container-padding-sp); }
}

.page-hero {
  padding: var(--space-xl) var(--container-padding);
  background: var(--washi);
  text-align: center;
}

.page-hero-inner { max-width: 720px; margin: 0 auto; }

.page-hero h1 {
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 300;
  color: var(--sumi);
  letter-spacing: 0.24em;
  line-height: 1.8;
  margin-bottom: 8px;
}

.page-hero-sub {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--terra);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-xs);
}

.page-hero .divider-line { margin: 18px auto; }

.page-hero .hero-lead {
  font-size: 14px;
  font-weight: 300;
  color: var(--sumi-light);
  line-height: 2.2;
  letter-spacing: 0.06em;
  margin-top: var(--space-sm);
}

@media (max-width: 768px) {
  .page-hero { padding: var(--space-lg) var(--container-padding-sp); }
  .page-hero h1 { font-size: clamp(22px, 7vw, 32px); }
}

.site-footer { background: var(--sumi); padding: var(--space-2xl) var(--container-padding) var(--space-lg); color: var(--washi); }

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-xl);
}

.footer-brand-logo-jp { font-size: 18px; font-weight: 400; letter-spacing: 0.3em; color: var(--washi); margin-bottom: 6px; }

.footer-brand-logo-en { font-family: 'Playfair Display', serif; font-style: italic; font-size: 10px; color: rgba(242,237,227,0.4); letter-spacing: 0.2em; margin-bottom: var(--space-md); }

.footer-brand-desc { font-size: 12px; font-weight: 300; color: rgba(242,237,227,0.5); line-height: 2.0; letter-spacing: 0.04em; }

.footer-col-title { font-family: 'Playfair Display', serif; font-style: italic; font-size: 11px; color: var(--terra); letter-spacing: 0.2em; margin-bottom: var(--space-md); }

.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.footer-links a { font-size: 12px; font-weight: 300; color: rgba(242,237,227,0.35); letter-spacing: 0.08em; transition: color 0.2s; }

.footer-links a:hover { color: rgba(242,237,227,0.8); }

.footer-divider { border: none; border-top: 1px solid rgba(242,237,227,0.06); margin-bottom: var(--space-md); }

.footer-bottom { max-width: var(--max-width); margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }

.footer-copy { font-size: 10px; color: rgba(242,237,227,0.18); letter-spacing: 0.06em; }

.footer-address { font-size: 10px; color: rgba(242,237,227,0.18); letter-spacing: 0.05em; font-style: normal; }

@media (max-width: 768px) {
  .site-footer { padding: var(--space-xl) var(--container-padding-sp) var(--space-lg); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

.reveal.is-visible { opacity: 1; transform: translateY(0); }

.reveal-left {
  opacity: 0;
  transform: translateX(-36px);
  transition:
    opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal-left.is-visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(36px);
  transition:
    opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal-right.is-visible { opacity: 1; transform: translateX(0); }

.reveal-scale {
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity 1.0s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 1.0s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal-scale.is-visible { opacity: 1; transform: scale(1); }

.reveal[data-reveal-delay="1"], .reveal-scale[data-reveal-delay="1"], .reveal-left[data-reveal-delay="1"], .reveal-right[data-reveal-delay="1"] { transition-delay: 0.08s; }

.reveal[data-reveal-delay="2"], .reveal-scale[data-reveal-delay="2"], .reveal-left[data-reveal-delay="2"], .reveal-right[data-reveal-delay="2"] { transition-delay: 0.16s; }

.reveal[data-reveal-delay="3"], .reveal-scale[data-reveal-delay="3"], .reveal-left[data-reveal-delay="3"], .reveal-right[data-reveal-delay="3"] { transition-delay: 0.24s; }

.reveal[data-reveal-delay="4"], .reveal-scale[data-reveal-delay="4"], .reveal-left[data-reveal-delay="4"], .reveal-right[data-reveal-delay="4"] { transition-delay: 0.32s; }

.reveal[data-reveal-delay="5"], .reveal-scale[data-reveal-delay="5"], .reveal-left[data-reveal-delay="5"], .reveal-right[data-reveal-delay="5"] { transition-delay: 0.40s; }

.reveal[data-reveal-delay="6"], .reveal-scale[data-reveal-delay="6"], .reveal-left[data-reveal-delay="6"], .reveal-right[data-reveal-delay="6"] { transition-delay: 0.48s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right, .reveal-scale {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}