/* ============================================================
   OCA Japan - Main Stylesheet
   Design: Natural / Eco / Organic Cacao Brand
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;600;700&family=Noto+Sans+JP:wght@300;400;500;700&family=Cormorant+Garamond:ital,wght@0,400;0,600;1,400&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  --color-bg:          #ffffff;
  --color-main:        #4CAF50;
  --color-accent:      #8BC34A;
  --color-dark-green:  #2e7d32;
  --color-light-green: #f1f8e9;
  --color-earth:       #795548;
  --color-sand:        #fafaf7;
  --color-text:        #333333;
  --color-text-muted:  #666666;
  --color-border:      #e8e8e4;

  --font-serif:        'Cormorant Garamond', 'Noto Serif JP', serif;
  --font-sans:         'Noto Sans JP', sans-serif;

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   16px;
  --radius-pill: 999px;

  --shadow-soft: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.07);

  --transition: 0.3s ease;
}

/* ---------- Reset / Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-main); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-dark-green); }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.section-title-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-main);
  display: block;
  margin-bottom: 0.5rem;
}
.section-lead {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.9;
  max-width: 680px;
}

/* ---------- Buttons ---------- */
.btn-oca {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.8rem;
  background: var(--color-main);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 2px solid var(--color-main);
  border-radius: var(--radius-pill);
  transition: all var(--transition);
  cursor: pointer;
}
.btn-oca:hover {
  background: var(--color-dark-green);
  border-color: var(--color-dark-green);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(76,175,80,0.3);
}
.btn-oca-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.8rem;
  background: transparent;
  color: var(--color-main);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 2px solid var(--color-main);
  border-radius: var(--radius-pill);
  transition: all var(--transition);
}
.btn-oca-outline:hover {
  background: var(--color-main);
  color: #fff;
  transform: translateY(-2px);
}
.btn-oca-white {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.8rem;
  background: #fff;
  color: var(--color-main);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 2px solid #fff;
  border-radius: var(--radius-pill);
  transition: all var(--transition);
}
.btn-oca-white:hover {
  background: transparent;
  color: #fff;
  transform: translateY(-2px);
}

/* ---------- Header / Navbar ---------- */
#main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
#main-header.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
#main-header .navbar {
  padding: 0.9rem 0;
}
#main-header.scrolled .navbar {
  padding: 0.6rem 0;
}

/* Logo */
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.navbar-brand img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  transition: transform var(--transition);
}
.navbar-brand:hover img { transform: scale(1.05); }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text .brand-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
}
.brand-text .brand-sub {
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--color-main);
}

/* TOP page: white nav on hero */
body.hero-page #main-header:not(.scrolled) .brand-text .brand-name,
body.hero-page #main-header:not(.scrolled) .nav-link { color: #fff; }
body.hero-page #main-header:not(.scrolled) .brand-text .brand-sub { color: rgba(255,255,255,0.8); }
body.hero-page #main-header:not(.scrolled) .navbar-toggler { border-color: rgba(255,255,255,0.6); }
body.hero-page #main-header:not(.scrolled) .navbar-toggler-icon { filter: invert(1); }

/* Nav links */
.navbar-nav .nav-link {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
  padding: 0.4rem 0.85rem !important;
  position: relative;
  transition: color var(--transition);
}
.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0.85rem;
  right: 0.85rem;
  height: 2px;
  background: var(--color-main);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}
.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after { transform: scaleX(1); }
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active { color: var(--color-main); }

/* CTA link in nav */
.nav-cta {
  background: var(--color-main) !important;
  color: #fff !important;
  border-radius: var(--radius-pill) !important;
  padding: 0.38rem 1.1rem !important;
  font-size: 0.78rem !important;
  margin-left: 0.4rem;
}
.nav-cta:hover { background: var(--color-dark-green) !important; color: #fff !important; }
.nav-cta::after { display: none !important; }

/* ---------- Hero (TOP) ---------- */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}
.hero-carousel,
.hero-carousel .carousel-inner,
.hero-carousel .carousel-item { height: 100%; }
.hero-carousel .carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-carousel .carousel-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.45) 60%, rgba(0,0,0,0.62) 100%);
}
.hero-content {
  position: absolute;
  bottom: 12%;
  left: 0;
  right: 0;
  z-index: 10;
  color: #fff;
  padding: 0 1.5rem;
}
.hero-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(0.9rem, 2vw, 1.15rem);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.82);
  display: block;
  margin-bottom: 0.75rem;
  animation: fadeInUp 0.9s ease forwards;
  opacity: 0;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 600;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 1.2rem;
  animation: fadeInUp 0.9s ease 0.2s forwards;
  opacity: 0;
}
.hero-desc {
  font-size: clamp(0.82rem, 1.3vw, 0.93rem);
  color: rgba(255,255,255,0.88);
  line-height: 2;
  max-width: 520px;
  margin-bottom: 2rem;
  animation: fadeInUp 0.9s ease 0.4s forwards;
  opacity: 0;
}
.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.9s ease 0.6s forwards;
  opacity: 0;
}
.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  color: rgba(255,255,255,0.7);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  animation: bounceScroll 2s infinite;
}
.hero-scroll .scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
}
@keyframes bounceScroll {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(7px); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Page Hero (sub pages) ---------- */
.page-hero {
  position: relative;
  height: 360px;
  overflow: hidden;
  margin-top: 70px;
}
.page-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.18), rgba(0,0,0,0.55));
}
.page-hero-content {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
  padding: 1rem;
}
.page-hero-content .page-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.78);
  margin-bottom: 0.5rem;
}
.page-hero-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: #fff;
}

/* Breadcrumb */
.breadcrumb-bar {
  background: var(--color-sand);
  border-bottom: 1px solid var(--color-border);
  padding: 0.55rem 0;
}
.breadcrumb { margin: 0; font-size: 0.78rem; }
.breadcrumb-item a { color: var(--color-text-muted); }
.breadcrumb-item.active { color: var(--color-main); }

/* ---------- Sections ---------- */
.section-oca { padding: 5rem 0; }
.section-oca-sm { padding: 3rem 0; }
.section-bg-light { background: var(--color-light-green); }
.section-bg-sand { background: var(--color-sand); }
.section-bg-dark { background: var(--color-dark-green); color: #fff; }
.section-bg-dark .section-title,
.section-bg-dark h2,
.section-bg-dark h3 { color: #fff; }
.section-bg-dark .section-lead,
.section-bg-dark p { color: rgba(255,255,255,0.85); }

/* ---------- Feature Cards ---------- */
.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
  height: 100%;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
}
.feature-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.feature-card-body { padding: 1.5rem; }
.feature-card-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.4rem;
  opacity: 0.55;
}
.feature-card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.feature-card-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.85;
}

/* ---------- Product Cards ---------- */
.product-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}
.product-card-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}
.product-card-body { padding: 1.25rem; }
.product-card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.product-card-text {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ---------- Split Layout ---------- */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.split-section.reverse { direction: rtl; }
.split-section.reverse > * { direction: ltr; }
.split-img { overflow: hidden; min-height: 320px; }
.split-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.split-img:hover img { transform: scale(1.04); }
.split-text {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fff;
}
@media (max-width: 767px) {
  .split-section { grid-template-columns: 1fr; }
  .split-section.reverse { direction: ltr; }
  .split-img { height: 250px; min-height: auto; }
  .split-text { padding: 2rem 1.5rem; }
}

/* ---------- Icon List ---------- */
.icon-list { list-style: none; padding: 0; margin: 0; }
.icon-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
}
.icon-list li:last-child { border-bottom: none; }
.icon-list li .icon {
  color: var(--color-main);
  font-size: 1rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

/* ---------- Number Sections ---------- */
.num-section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}
.num-section:last-child { border-bottom: none; }
.num-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-main);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.3rem;
  flex-shrink: 0;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-dark-green), var(--color-main) 55%, var(--color-accent));
  padding: 4.5rem 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  left: -10%;
  width: 420px;
  height: 420px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}
.cta-banner h2 { color: #fff; font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 0.75rem; }
.cta-banner p { color: rgba(255,255,255,0.88); font-size: 0.9rem; margin-bottom: 2rem; }

/* ---------- Media Cards ---------- */
.media-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: #fff;
  transition: transform var(--transition), box-shadow var(--transition);
}
.media-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}
.media-card img { width: 100%; height: 200px; object-fit: cover; }
.media-card-body { padding: 1.1rem; }
.media-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  background: var(--color-light-green);
  color: var(--color-main);
  padding: 0.18rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.5rem;
}

/* ---------- Contact ---------- */
.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 2.5rem;
}
.form-label { font-size: 0.82rem; font-weight: 500; margin-bottom: 0.3rem; }
.form-control, .form-select {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  padding: 0.55rem 0.85rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: var(--font-sans);
}
.form-control:focus, .form-select:focus {
  border-color: var(--color-main);
  box-shadow: 0 0 0 3px rgba(76,175,80,0.15);
  outline: none;
}

/* ---------- Store Cards ---------- */
.store-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  border-left: 4px solid var(--color-main);
  transition: transform var(--transition);
}
.store-card:hover { transform: translateX(4px); }
.store-card h5 { font-family: var(--font-serif); font-size: 1rem; margin-bottom: 0.4rem; }
.store-card .store-info { font-size: 0.82rem; color: var(--color-text-muted); line-height: 1.75; }

/* ---------- Table ---------- */
.oca-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.oca-table th, .oca-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.oca-table th {
  background: var(--color-light-green);
  font-weight: 500;
  width: 200px;
  color: var(--color-dark-green);
  white-space: nowrap;
}

/* ---------- Certifications ---------- */
.cert-badges { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1rem; }
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.85rem;
  background: var(--color-light-green);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  font-size: 0.73rem;
  font-weight: 500;
  color: var(--color-dark-green);
}

/* ---------- Stats Strip ---------- */
.stats-strip { background: var(--color-main); padding: 2.5rem 0; color: #fff; }
.stat-item { text-align: center; padding: 0.5rem; }
.stat-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.6rem;
  font-weight: 600;
  line-height: 1;
}
.stat-unit { font-size: 1rem; opacity: 0.85; }
.stat-label { font-size: 0.78rem; opacity: 0.88; margin-top: 0.2rem; }

/* ---------- Footer ---------- */
#main-footer {
  background: #1a2a1b;
  color: rgba(255,255,255,0.8);
  padding: 3rem 0 0;
}
.footer-brand .footer-logo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.75rem;
}
.footer-brand-name { font-family: var(--font-serif); font-size: 1.15rem; color: #fff; margin-bottom: 0.2rem; }
.footer-brand-sub { font-size: 0.65rem; letter-spacing: 0.2em; color: var(--color-accent); }
.footer-desc { font-size: 0.82rem; color: rgba(255,255,255,0.6); line-height: 1.85; margin-top: 0.75rem; }
.footer-address { font-size: 0.8rem; color: rgba(255,255,255,0.55); line-height: 1.85; margin-top: 0.75rem; }
.footer-address a { color: rgba(255,255,255,0.55); }
.footer-heading {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
  font-weight: 500;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { padding: 0.22rem 0; }
.footer-links a {
  font-size: 0.84rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.footer-links a::before { content: '›'; color: var(--color-accent); }
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1.2rem 0;
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.77rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.5); font-size: 0.77rem; }
.footer-bottom a:hover { color: var(--color-accent); }

/* ---------- Scroll to Top ---------- */
.scroll-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: var(--color-main);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 16px rgba(76,175,80,0.35);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  z-index: 999;
}
.scroll-top-btn.visible { opacity: 1; visibility: visible; }
.scroll-top-btn:hover { background: var(--color-dark-green); transform: translateY(-3px); }

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
  .navbar-collapse {
    background: rgba(255,255,255,0.98);
    border-radius: var(--radius-md);
    margin-top: 0.5rem;
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-soft);
  }
  body.hero-page #main-header:not(.scrolled) .navbar-collapse .nav-link { color: var(--color-text); }
  .section-oca { padding: 3.5rem 0; }
  .page-hero { height: 280px; }
}
@media (max-width: 767px) {
  .hero-content { bottom: 15%; }
  .hero-btns { flex-direction: column; align-items: flex-start; }
  .contact-form-wrap { padding: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .oca-table th { width: 110px; font-size: 0.8rem; }
}