/* ===== リセット & 基本 ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black: #1c1c1c;
  --white: #ffffff;
  --cream: #faf8f5;
  --cream-dark: #f0ece6;
  --warm-gray: #8a8480;
  --mid-gray: #5a5754;
  --border: #e4e0da;
  --font-sans: 'Montserrat', sans-serif;
  --font-serif: 'Cormorant Garamond', serif;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--black);
  color: var(--white);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 3rem;
}

/* ===== スクロールアニメーション ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.85s cubic-bezier(0.16,1,0.3,1),
              transform 0.85s cubic-bezier(0.16,1,0.3,1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ===== ナビゲーション ===== */
.navbar {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 100;
  padding: 1.8rem 3rem;
  transition: background 0.4s, padding 0.4s;
}

.navbar.scrolled {
  background: rgba(28,28,28,0.9);
  padding: 1.1rem 3rem;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--white);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.6);
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--white); }

/* ===== ヒーロー ===== */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--black);
  background-image: url('https://images.unsplash.com/photo-1545241047-6083a3684587?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
  z-index: 1;
}

.hero-line {
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.35), transparent);
  z-index: 2;
}

.hero-content { position: relative; z-index: 2; }

.hero-tagline {
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  color: rgba(255,255,255,0.55);
  margin-bottom: 2rem;
}

.hero-logo {
  font-family: var(--font-serif);
  font-size: clamp(4.5rem, 12vw, 10rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1;
  margin-bottom: 1.8rem;
}

.hero-sub {
  font-size: 1.3rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.55);
  margin-bottom: 4rem;
}

.btn-hero {
  display: inline-block;
  padding: 0.85rem 3rem;
  border: 1px solid rgba(255,255,255,0.45);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  transition: all 0.3s;
  border-radius: 2px;
}
.btn-hero:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

/* ===== セクション共通 ===== */
.section-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  color: var(--warm-gray);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 4rem;
}

/* ===== フィロソフィー ===== */
.philosophy {
  padding: 10rem 0;
  background: var(--cream);
  border-top: 1px solid var(--border);
}

.philosophy .section-label { color: var(--warm-gray); }

.philosophy-poetic {
  max-width: 680px;
}

.philosophy-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--black);
  line-height: 1.3;
  margin: 1.2rem 0 3rem;
}

.philosophy-body {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.philosophy-body p {
  font-size: 1.45rem;
  font-weight: 300;
  color: var(--mid-gray);
  line-height: 2.2;
  letter-spacing: 0.04em;
}

/* ===== カテゴリー ===== */
.categories {
  padding: 9rem 0;
  background: var(--cream);
}

.categories-header { margin-bottom: 2.5rem; }
.categories .section-label { color: var(--warm-gray); }
.categories .section-title { color: var(--black); margin-bottom: 2rem; }

/* 上2枚・下3枚のグリッド */
.category-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: auto auto;
  gap: 8px;
}

.cat-card:nth-child(1) { grid-column: span 3; }
.cat-card:nth-child(2) { grid-column: span 3; }
.cat-card:nth-child(3) { grid-column: span 2; }
.cat-card:nth-child(4) { grid-column: span 2; }
.cat-card:nth-child(5) { grid-column: span 2; }

.cat-card {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4/5;
  cursor: pointer;
}

.cat-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.7s cubic-bezier(0.16,1,0.3,1);
}
.cat-card:hover .cat-img { transform: scale(1.06); }

/* 暗めのグラデーションオーバーレイ */
.cat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.0) 0%,
    rgba(0,0,0,0.68) 100%
  );
  z-index: 1;
  transition: background 0.4s;
}
.cat-card:hover::before {
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.1) 0%,
    rgba(0,0,0,0.65) 100%
  );
}

.cat-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1.8rem;
  z-index: 2;
}

.cat-num {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.85);
  margin-bottom: 0.5rem;
}

.cat-name {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.cat-jp {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.8);
}

/* ===== 注目商品 ===== */
.featured {
  padding: 9rem 0;
  background: var(--white);
}

.featured-header { margin-bottom: 4rem; }
.featured .section-label { color: var(--warm-gray); }

.section-title-dark {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--black);
  line-height: 1.2;
  margin-bottom: 4rem;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.featured-card {
  background: var(--cream);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.35s, box-shadow 0.35s;
}
.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.featured-img {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--cream-dark);
  overflow: hidden;
}

.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.6s cubic-bezier(0.16,1,0.3,1);
}
.featured-card:hover .featured-img img { transform: scale(1.04); }

.featured-cat-label {
  position: absolute;
  top: 1rem; left: 1rem;
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mid-gray);
  background: rgba(255,255,255,0.85);
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}

.featured-info {
  padding: 1.5rem 1.5rem 0.5rem;
}

.featured-cat {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--warm-gray);
  margin-bottom: 0.4rem;
}

.featured-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--black);
  margin-bottom: 0;
}

.featured-desc {
  font-size: 1.4rem;
  color: var(--warm-gray);
  line-height: 1.6;
  margin: 0.6rem 0 0;
}

.btn-amazon {
  display: block;
  margin: 1rem 1.5rem 1.5rem;
  padding: 0.75rem 1rem;
  background: var(--black);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-align: center;
  border-radius: 2px;
  transition: background 0.3s;
}
.btn-amazon:hover { background: #333; }

/* ===== コンタクト ===== */
.contact {
  padding: 9rem 0;
  background: var(--cream);
  text-align: center;
}

.contact .section-label { color: var(--warm-gray); }
.contact .section-title { color: var(--black); margin-bottom: 1.5rem; }

.contact-text {
  font-size: 0.85rem;
  color: var(--mid-gray);
  letter-spacing: 0.05em;
  margin-bottom: 3rem;
  font-weight: 300;
}

.btn-contact {
  display: inline-block;
  padding: 0.9rem 3rem;
  background: var(--black);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  border-radius: 2px;
  transition: background 0.3s;
}
.btn-contact:hover { background: #333; }

/* ===== フッター ===== */
.footer {
  padding: 3.5rem 0;
  background: var(--black);
  text-align: center;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.8rem;
}

.footer-copy {
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.3);
}

.footer-legal {
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-top: 0.4rem;
}
.footer-legal a {
  color: rgba(255,255,255,0.25);
  text-decoration: none;
  transition: color 0.3s;
}
.footer-legal a:hover {
  color: rgba(255,255,255,0.55);
}

/* ===== 規約ページ ===== */
.legal-container {
  max-width: 780px;
  margin: 0 auto;
  padding: 7rem 1.5rem 5rem;
  color: var(--black);
  line-height: 1.9;
  background: #fff;
}
body.privacy-page { background: #fff; }
body.privacy-page .footer { background: var(--black); }
.legal-title {
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  text-align: center;
}
.legal-updated {
  font-size: 0.75rem;
  color: rgba(0,0,0,0.4);
  text-align: center;
  margin-bottom: 3rem;
  letter-spacing: 0.05em;
}
.legal-section {
  margin-bottom: 2.2rem;
}
.legal-section h2 {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}
.legal-section p,
.legal-section ul {
  font-size: 0.85rem;
  color: rgba(0,0,0,0.75);
}
.legal-section ul {
  padding-left: 1.3rem;
  margin-top: 0.5rem;
}
.legal-section li {
  margin-bottom: 0.3rem;
}

/* ===== 商品ページ（白背景） ===== */
body.product-page {
  background-color: var(--cream);
  color: var(--black);
}

body.product-page .navbar.scrolled {
  background: rgba(250,248,245,0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

body.product-page .nav-logo { color: var(--black); }
body.product-page .nav-links a { color: rgba(0,0,0,0.45); }
body.product-page .nav-links a:hover { color: var(--black); }

.page-hero {
  padding: 10rem 0 6rem;
  text-align: center;
  background: var(--black);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 2.5rem;
  transition: color 0.3s;
}
.back-link:hover { color: var(--white); }

.products-section {
  padding: 6rem 0;
  background: var(--cream);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.product-card {
  background: var(--white);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.35s, box-shadow 0.35s;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.product-img {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--cream-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  overflow: hidden;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.6s cubic-bezier(0.16,1,0.3,1);
}
.product-card:hover .product-img img { transform: scale(1.04); }

.product-info {
  padding: 1.5rem 1.5rem 0.5rem;
  border-top: 1px solid var(--border);
}

.product-info h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.product-info p {
  font-size: 0.8rem;
  color: var(--mid-gray);
  line-height: 1.9;
  font-weight: 300;
  margin-bottom: 0;
}

body.product-page .btn-amazon {
  margin: 1rem 1.5rem 1.5rem;
  display: block;
  text-align: center;
  border-radius: 2px;
}

body.product-page .footer { background: var(--black); }

/* ===== レスポンシブ ===== */
@media (max-width: 900px) {
  .philosophy-grid { grid-template-columns: 1fr; gap: 2px; }
  .featured-grid, .products-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-name { font-size: 2rem; }
  .cat-jp { display: none; }
}

@media (max-width: 600px) {
  .container { padding: 0 1.5rem; }
  .navbar { padding: 0.8rem 1.5rem; }
  .navbar.scrolled { padding: 0.6rem 1.5rem; }
  .nav-inner {
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
  }
  .nav-links {
    gap: 1.8rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero-logo { font-size: 3.8rem; }
  .cat-name { font-size: 1.6rem; }
  .cat-tag { display: none; }
  .featured-grid, .products-grid { grid-template-columns: 1fr; }
}