/* =============================
   Reset & Base
============================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brown-dark:   #3d1f0e;
  --brown-mid:    #6b3f20;
  --brown-main:   #8b5e3c;
  --brown-light:  #c8a882;
  --brown-pale:   #e8ddd0;
  --cream:        #faf6f1;
  --white:        #ffffff;
  --text-dark:    #2c1a0e;
  --text-mid:     #5a3a22;
  --text-light:   #9a7a60;
  --font-serif:   'Playfair Display', 'Noto Serif JP', serif;
  --font-sans:    'Noto Serif JP', serif;
  --transition:   0.3s ease;
  --shadow-sm:    0 2px 8px rgba(61,31,14,.08);
  --shadow-md:    0 6px 24px rgba(61,31,14,.12);
  --shadow-lg:    0 12px 48px rgba(61,31,14,.16);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--cream);
  color: var(--text-dark);
  line-height: 1.8;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden { display: none !important; }

/* =============================
   Typography helpers
============================= */
.section-label {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--brown-light);
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--brown-dark);
  line-height: 1.4;
  margin-bottom: 32px;
}

/* =============================
   Buttons
============================= */
.btn-primary {
  display: inline-block;
  padding: 14px 40px;
  background: var(--brown-main);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  border: 2px solid var(--brown-main);
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.btn-primary:hover {
  background: transparent;
  color: var(--brown-main);
}

/* =============================
   Header
============================= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  background: rgba(250,246,241,0.96);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 32px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-en {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}
.header.scrolled .logo-en { color: var(--brown-dark); }

.logo-ja {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}
.header.scrolled .logo-ja { color: var(--text-light); }

.nav-list {
  display: flex;
  gap: 36px;
}
.nav-list a {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--white);
  position: relative;
  transition: color var(--transition);
}
.header.scrolled .nav-list a { color: var(--text-mid); }
.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--brown-light);
  transition: width var(--transition);
}
.nav-list a:hover::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.header.scrolled .hamburger span { background: var(--brown-dark); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.nav-mobile {
  display: none;
  overflow: hidden;
  max-height: 0;
  background: var(--cream);
  transition: max-height 0.4s ease;
}
.nav-mobile.open { max-height: 300px; }
.nav-mobile-list {
  display: flex;
  flex-direction: column;
  padding: 16px 32px 24px;
  gap: 16px;
}
.nav-mobile-list a {
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--text-mid);
  padding: 4px 0;
  border-bottom: 1px solid var(--brown-pale);
}

/* =============================
   Hero
============================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(61,31,14,.72) 0%, rgba(107,63,32,.45) 60%, rgba(200,168,130,.2) 100%),
    url("https://images.unsplash.com/photo-1501339847302-ac426a4a7cbb?auto=format&fit=crop&w=1800&q=80")
    center/cover no-repeat;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: 120px 32px 80px;
  margin: 0 auto;
  text-align: center;
}

.hero-sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--brown-light);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.6;
  margin-bottom: 40px;
  text-shadow: 0 2px 12px rgba(0,0,0,.2);
}

.hero-scroll {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.hero-scroll span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,.6);
}
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,.5), transparent);
  animation: scrollAnim 2s ease infinite;
}
@keyframes scrollAnim {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* =============================
   Concept
============================= */
.concept {
  padding: 100px 0;
  background: var(--cream);
}

.concept-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.concept-body {
  color: var(--text-mid);
  font-size: 0.95rem;
  line-height: 2;
}

.concept-image { display: flex; justify-content: center; }

.concept-img-frame {
  width: 340px; height: 340px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 6px solid var(--brown-pale);
}
.concept-img-placeholder svg {
  width: 100%; height: 100%;
}

/* =============================
   Menu
============================= */
.menu {
  padding: 100px 0;
  background: var(--brown-pale);
}

.menu .section-title { text-align: center; }
.menu .section-label { text-align: center; }

.menu-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
  border: 1px solid var(--brown-light);
  border-radius: 2px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
}
.tab {
  padding: 10px 36px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--brown-main);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.tab.active {
  background: var(--brown-main);
  color: var(--white);
}
.tab:hover:not(.active) { background: rgba(139,94,60,.08); }

.menu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.menu-card {
  background: var(--white);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.menu-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.menu-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--brown-pale);
}
.menu-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.menu-card:hover .menu-img img {
  transform: scale(1.06);
}

.menu-info {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.menu-info h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--brown-dark);
  margin-bottom: 6px;
}
.menu-info p {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
}
.price {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--brown-main);
  font-weight: 700;
}

/* =============================
   About
============================= */
.about {
  padding: 100px 0;
  background: var(--cream);
}

.about .section-label,
.about .section-title { text-align: center; }

.about-address-card {
  background: var(--brown-dark);
  color: var(--white);
  border-radius: 6px;
  padding: 32px 40px;
  margin-bottom: 32px;
}
.address-main {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}
.address-main svg {
  color: var(--brown-light);
  flex-shrink: 0;
  margin-top: 3px;
}
.address-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,.5);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.address-main-text {
  font-size: 1rem;
  color: var(--white);
  line-height: 1.7;
}
.access-transit {
  font-size: 0.85rem;
  color: var(--brown-light);
  padding-left: 34px;
  letter-spacing: 0.03em;
}

.about-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.about-info-card {
  background: var(--white);
  border-radius: 6px;
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--brown-pale);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.about-info-card:hover {
  border-color: var(--brown-light);
  box-shadow: var(--shadow-md);
}
.about-info-icon {
  color: var(--brown-light);
  margin-bottom: 14px;
}
.about-info-card h3 {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brown-main);
  margin-bottom: 10px;
}
.about-info-card p {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.7;
}
.about-info-sub {
  font-size: 0.75rem !important;
  color: var(--text-light) !important;
  margin-top: 4px;
}

/* =============================
   Contact
============================= */
.contact {
  padding: 100px 0;
  background: var(--brown-dark);
}
.contact .section-label { color: var(--brown-light); }
.contact .section-title { color: var(--white); }
.contact-desc {
  color: rgba(255,255,255,.65);
  font-size: 0.9rem;
  margin-top: -16px;
  margin-bottom: 40px;
  line-height: 1.9;
}

.contact-form {
  max-width: 680px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.form-group label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,.7);
}
.required { color: var(--brown-light); }
.form-group input,
.form-group textarea {
  padding: 12px 16px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(200,168,130,.3);
  border-radius: 2px;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,.25); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--brown-light);
  background: rgba(255,255,255,.1);
}
.form-group textarea { resize: vertical; }

/* =============================
   Footer
============================= */
.footer {
  background: var(--brown-dark);
  border-top: 1px solid rgba(200,168,130,.15);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 56px 0 40px;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-logo .logo-en { color: var(--white); }
.footer-logo .logo-ja { color: rgba(255,255,255,.45); }
.footer-tagline {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.8rem;
  color: var(--brown-light);
  letter-spacing: 0.1em;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,.55);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--brown-light); }

.footer-sns p {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,.4);
  margin-bottom: 14px;
}
.sns-icons {
  display: flex;
  gap: 16px;
}
.sns-icons a {
  color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.sns-icons a:hover { color: var(--brown-light); }

.footer-bottom {
  border-top: 1px solid rgba(200,168,130,.12);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,.25);
}

/* =============================
   Responsive
============================= */
@media (max-width: 900px) {
  .nav { display: none; }
  .hamburger { display: flex; }
  .nav-mobile { display: block; }

  .concept-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .concept-image { order: -1; }
  .concept-img-frame { width: 260px; height: 260px; }

  .about-info-grid { grid-template-columns: repeat(2, 1fr); }

  .menu-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .header-inner { padding: 0 20px; }

  .hero-content { padding: 100px 20px 80px; }

  .section-title { margin-bottom: 24px; }

  .concept { padding: 72px 0; }
  .menu { padding: 72px 0; }
  .about { padding: 72px 0; }
  .contact { padding: 72px 0; }

  .about-address-card { padding: 24px 20px; }
  .about-info-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .about-info-card { padding: 20px 16px; }

  .menu-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; gap: 32px; padding: 40px 0 28px; }
}