/* ===========================
   CSS Variables
=========================== */
:root {
  --color-bg: #0a0a0a;
  --color-bg-dark: #111111;
  --color-bg-section: #f8f6f3;
  --color-gold: #c9a96e;
  --color-gold-light: #e0c898;
  --color-white: #ffffff;
  --color-text: #1a1a1a;
  --color-text-light: #666666;
  --color-text-on-dark: #cccccc;
  --font-en: 'Cormorant Garamond', serif;
  --font-ja: 'Noto Sans JP', sans-serif;
  --transition: 0.3s ease;
  --radius: 4px;
  --shadow: 0 4px 24px rgba(0,0,0,0.12);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

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

img { display: block; width: 100%; height: auto; object-fit: cover; }

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

ul { list-style: none; }

/* ===========================
   Utility
=========================== */
.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.section { padding: 100px 0; }

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header__en {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.section-header__ja {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
}

.section--dark .section-header__ja { color: var(--color-white); }

/* ===========================
   Buttons
=========================== */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  font-family: var(--font-en);
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  border-radius: var(--radius);
}

.btn:hover {
  background: var(--color-gold);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--header {
  padding: 10px 24px;
  font-size: 0.75rem;
}

.btn--hero {
  border-color: var(--color-white);
  color: var(--color-white);
  margin-top: 32px;
}

.btn--hero:hover {
  background: var(--color-white);
  color: var(--color-bg);
}

.btn--submit {
  width: 100%;
  padding: 16px;
  background: var(--color-gold);
  color: var(--color-white);
  border: none;
  font-size: 1rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.btn--submit:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

/* ===========================
   Header
=========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 5%;
}

.header__logo {
  font-family: var(--font-en);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.2em;
}

.header__nav ul {
  display: flex;
  gap: 32px;
}

.header__nav a {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-white);
  transition: color var(--transition);
}

.header__nav a:hover { color: var(--color-gold); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* SP Nav */
.sp-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: rgba(10,10,10,0.98);
  padding: 20px 0 32px;
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition), opacity var(--transition);
}

.sp-nav.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.sp-nav ul { text-align: center; }
.sp-nav li { padding: 12px 0; }

.sp-nav__link {
  font-family: var(--font-en);
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--color-white);
}

.sp-nav__link--cta {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 40px;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  border-radius: var(--radius);
}

/* ===========================
   Hero
=========================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1585747860715-2ba37e788b70?w=1600&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  filter: brightness(0.35);
  transform: scale(1.05);
  transition: transform 8s ease;
}

.hero:hover .hero__bg { transform: scale(1); }

.hero__content {
  position: relative;
  text-align: center;
  color: var(--color-white);
  z-index: 1;
}

.hero__sub {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.4em;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.hero__title {
  font-family: var(--font-en);
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 300;
  letter-spacing: 0.3em;
  line-height: 1;
  margin-bottom: 20px;
}

.hero__catch {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.85);
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===========================
   Concept
=========================== */
.concept { background: var(--color-bg-section); }

.concept__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.concept__img {
  border-radius: 2px;
  overflow: hidden;
  aspect-ratio: 4/5;
}

.concept__img img {
  height: 100%;
  transition: transform 0.6s ease;
}

.concept__img:hover img { transform: scale(1.04); }

.concept__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 300;
  line-height: 1.5;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.concept__desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

.concept__tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tag {
  padding: 6px 16px;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-radius: 20px;
}

/* ===========================
   Menu
=========================== */
.menu__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.menu-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,169,110,0.2);
  padding: 36px 24px;
  text-align: center;
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}

.menu-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-6px);
  background: rgba(201,169,110,0.06);
}

.menu-card__icon {
  font-size: 2rem;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.menu-card__name {
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 12px;
  color: var(--color-white);
}

.menu-card__desc {
  font-size: 0.82rem;
  color: var(--color-text-on-dark);
  margin-bottom: 20px;
  line-height: 1.7;
}

.menu-card__price {
  font-family: var(--font-en);
  font-size: 1.4rem;
  color: var(--color-gold);
}

.menu-card__price span {
  font-size: 0.9rem;
  margin-left: 2px;
}

.menu__note {
  text-align: center;
  margin-top: 40px;
  font-size: 0.8rem;
  color: var(--color-text-on-dark);
}

/* ===========================
   Gallery
=========================== */
.gallery { overflow: hidden; }

.gallery__slider {
  margin-top: 20px;
  padding: 0 60px;
}

.swiper-slide {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
}

.swiper-slide img {
  height: 100%;
  transition: transform 0.5s ease;
}

.swiper-slide:hover img { transform: scale(1.04); }

.swiper-button-prev,
.swiper-button-next {
  color: var(--color-gold) !important;
  width: 44px !important;
  height: 44px !important;
}

.swiper-button-prev::after,
.swiper-button-next::after {
  font-size: 1.2rem !important;
}

.swiper-pagination-bullet {
  background: var(--color-gold) !important;
  opacity: 0.4 !important;
}

.swiper-pagination-bullet-active { opacity: 1 !important; }

/* ===========================
   Q&A Accordion
=========================== */
.accordion { max-width: 760px; margin: 0 auto; }

.accordion__item {
  border-bottom: 1px solid rgba(201,169,110,0.25);
}

.accordion__q {
  width: 100%;
  background: none;
  border: none;
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  color: var(--color-white);
  font-family: var(--font-ja);
  font-size: 0.95rem;
  text-align: left;
  transition: color var(--transition);
}

.accordion__q:hover { color: var(--color-gold); }

.accordion__icon {
  flex-shrink: 0;
  font-size: 0.9rem;
  color: var(--color-gold);
  transition: transform var(--transition);
}

.accordion__item.open .accordion__icon {
  transform: rotate(45deg);
}

.accordion__a {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.accordion__item.open .accordion__a {
  max-height: 300px;
}

.accordion__a p {
  padding: 0 0 24px;
  color: var(--color-text-on-dark);
  font-size: 0.9rem;
  line-height: 1.9;
}

/* ===========================
   Access
=========================== */
.access { background: var(--color-bg-section); }

.access__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: stretch;
}

.access__dl { display: flex; flex-direction: column; gap: 0; }

.access__row {
  padding: 18px 0;
  border-bottom: 1px solid #e0e0e0;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  align-items: start;
}

.access__row dt {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-gold);
}

.access__row dd {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.access__row dd a {
  color: var(--color-gold);
  text-decoration: underline;
}

.access__map {
  min-height: 360px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.access__map iframe { width: 100%; height: 100%; min-height: 360px; }

/* ===========================
   Contact
=========================== */
.contact {
  position: relative;
  background: var(--color-bg);
  color: var(--color-white);
}

.contact__bg {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1600948836101-f9ffda59d250?w=1200&q=80');
  background-size: cover;
  background-position: center;
  opacity: 0.08;
}

.contact__inner {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.contact__title {
  font-size: 1.8rem;
  font-weight: 300;
  margin: 12px 0 16px;
}

.contact__desc {
  font-size: 0.9rem;
  color: var(--color-text-on-dark);
  margin-bottom: 48px;
}

.contact__form { text-align: left; }

.form-group { margin-bottom: 24px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: rgba(255,255,255,0.8);
}

.required {
  display: inline-block;
  background: var(--color-gold);
  color: var(--color-white);
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 2px;
  margin-left: 8px;
  vertical-align: middle;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: var(--color-white);
  font-family: var(--font-ja);
  font-size: 0.9rem;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.3); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-gold);
}

.form-group select option { background: var(--color-bg-dark); }

/* ===========================
   Footer
=========================== */
.footer {
  background: #050505;
  padding: 48px 0 32px;
  color: rgba(255,255,255,0.5);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer__logo {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.3em;
}

.footer__nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__nav a {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer__nav a:hover { color: var(--color-gold); }

.footer__copy { font-size: 0.75rem; }

/* ===========================
   Page Top
=========================== */
.pagetop {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-gold);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 90;
}

.pagetop.visible {
  opacity: 1;
  pointer-events: all;
}

.pagetop:hover { transform: translateY(-4px); }

/* ===========================
   Responsive — Tablet
=========================== */
@media (max-width: 960px) {
  .header__nav { display: none; }
  .btn--header { display: none; }
  .hamburger { display: flex; }

  .concept__body { grid-template-columns: 1fr; gap: 40px; }
  .concept__img { max-width: 480px; margin: 0 auto; }

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

  .access__body { grid-template-columns: 1fr; }
  .access__map { min-height: 280px; }
}

/* ===========================
   Responsive — Mobile
=========================== */
@media (max-width: 600px) {
  .section { padding: 70px 0; }

  .section-header { margin-bottom: 40px; }
  .section-header__ja { font-size: 1.5rem; }

  .hero__title { font-size: clamp(3rem, 14vw, 5rem); }

  .menu__grid { grid-template-columns: 1fr; gap: 16px; }

  .gallery__slider { padding: 0 40px; }

  .access__row { grid-template-columns: 100px 1fr; }

  .pagetop { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}