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

:root {
  --color-bg: #f8f5f0;
  --color-dark: #1a1a1a;
  --color-accent: #7c5c2d;
  --color-accent-light: #c9a96e;
  --color-text: #2d2d2d;
  --color-text-light: #888;
  --color-border: #e0dbd4;
  --color-white: #ffffff;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --header-h: 72px;
  --transition: 0.4s ease;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.7;
}

ul {
  list-style: none;
}

/* ===========================
   Utility
=========================== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
}

.btn {
  display: inline-block;
  padding: 14px 40px;
  border: 1px solid var(--color-white);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  background: transparent;
}

.btn:hover {
  background: var(--color-white);
  color: var(--color-dark);
  opacity: 1;
}

.btn--dark {
  border-color: var(--color-dark);
  color: var(--color-dark);
}

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

/* ===========================
   Fade-in animation
=========================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

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

.header.scrolled {
  background: rgba(26, 26, 26, 0.96);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 40px;
}

.header__logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-white);
  letter-spacing: 0.1em;
}

.header__nav-list {
  display: flex;
  gap: 36px;
}

.header__nav-list a {
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition);
}

.header__nav-list a:hover {
  color: var(--color-accent-light);
  opacity: 1;
}

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

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.header__menu-btn.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.header__menu-btn.open span:nth-child(2) {
  opacity: 0;
}

.header__menu-btn.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ===========================
   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: var(--color-dark);
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 0 20px;
}

.hero__sub {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  font-weight: 300;
  margin-bottom: 16px;
  color: var(--color-accent-light);
  transition-delay: 0.1s;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  margin-bottom: 24px;
  transition-delay: 0.25s;
}

.hero__desc {
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 2;
  margin-bottom: 48px;
  transition-delay: 0.4s;
}

.hero .btn {
  transition-delay: 0.55s;
}

.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-size: 0.65rem;
  letter-spacing: 0.2em;
}

.hero__scroll-line {
  width: 1px;
  height: 50px;
  background: rgba(255, 255, 255, 0.4);
  animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===========================
   Section Common
=========================== */
.section {
  padding: 100px 0;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__label {
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  color: var(--color-accent);
  font-weight: 400;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.section__desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 300;
  line-height: 2;
}

/* ===========================
   What's New
=========================== */
.news {
  background: var(--color-white);
}

.news__list {
  max-width: 800px;
  margin: 0 auto;
}

.news__item {
  display: grid;
  grid-template-columns: 110px auto 1fr;
  gap: 16px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}

.news__item:first-child {
  border-top: 1px solid var(--color-border);
}

.news__date {
  font-size: 0.8rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  padding-top: 2px;
}

.news__tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 3px 10px;
  border: 1px solid var(--color-accent-light);
  color: var(--color-accent);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.news__text {
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.8;
}

/* ===========================
   Interior
=========================== */
.interior {
  background: var(--color-bg);
}

.interior__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 320px);
  gap: 8px;
  margin-top: 0;
}

.interior__item {
  position: relative;
  overflow: hidden;
  background: #d5cfc8;
}

.interior__item--large {
  grid-column: 1 / 2;
  grid-row: 1 / 3;
}

.interior__img {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}

.interior__item:hover .interior__img {
  transform: scale(1.05);
}

.interior__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.1em;
  background: rgba(0,0,0,0.2);
}

/* 画像が読み込まれたら placeholder を非表示 */
.interior__img[src]:not([src=""]) ~ .interior__placeholder {
  display: none;
}

/* ===========================
   Menu
=========================== */
.menu {
  background: var(--color-dark);
  color: var(--color-white);
}

.menu .section__label {
  color: var(--color-accent-light);
}

.menu .section__title {
  color: var(--color-white);
}

.menu__tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.menu__tab {
  background: none;
  border: none;
  color: rgba(255,255,255,0.5);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  padding: 14px 36px;
  cursor: pointer;
  position: relative;
  transition: color var(--transition);
}

.menu__tab::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-accent-light);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.menu__tab--active {
  color: var(--color-white);
}

.menu__tab--active::after {
  transform: scaleX(1);
}

.menu__panel {
  display: none;
}

.menu__panel--active {
  display: block;
}

.menu__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

.menu__item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.menu__item:nth-child(odd) {
  border-right: 1px solid rgba(255,255,255,0.08);
}

.menu__item-name {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 400;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.menu__item-desc {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.45);
  font-weight: 300;
}

.menu__item-price {
  font-size: 0.875rem;
  color: var(--color-accent-light);
  white-space: nowrap;
  letter-spacing: 0.05em;
}

.menu__note {
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
  margin-top: 48px;
  font-weight: 300;
}

/* ===========================
   Gallery
=========================== */
.gallery {
  background: var(--color-bg);
  padding-bottom: 0;
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 320px;
  gap: 8px;
  margin-top: 0;
}

.gallery__item {
  position: relative;
  overflow: hidden;
  background: #cdc7be;
  cursor: pointer;
}

.gallery__img {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}

.gallery__item:hover .gallery__img {
  transform: scale(1.06);
}

.gallery__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.1em;
  background: rgba(0,0,0,0.15);
  transition: background var(--transition);
}

.gallery__item:hover .gallery__placeholder {
  background: rgba(0,0,0,0.35);
}

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

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

.access__map {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.access__map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.access__map-placeholder {
  width: 100%;
  height: 100%;
  background: #e8e4de;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--color-text-light);
  font-size: 0.875rem;
  aspect-ratio: 4/3;
}

.access__map-note {
  font-size: 0.75rem;
  color: #aaa;
}

.access__detail {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px 32px;
  font-size: 0.9rem;
}

.access__detail dt {
  font-weight: 500;
  color: var(--color-accent);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  padding-top: 2px;
  white-space: nowrap;
}

.access__detail dd {
  font-weight: 300;
  line-height: 1.8;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 16px;
}

.access__detail dd a {
  color: var(--color-accent);
}

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

.contact__form {
  max-width: 640px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: 28px;
}

.form__label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  color: var(--color-text);
}

.form__required {
  font-size: 0.65rem;
  color: #c0392b;
  margin-left: 6px;
  font-weight: 400;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--color-text);
  transition: border-color var(--transition);
  outline: none;
  border-radius: 0;
  -webkit-appearance: none;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-accent);
}

.form__textarea {
  resize: vertical;
  min-height: 160px;
  line-height: 1.8;
}

.form__submit {
  text-align: center;
  margin-top: 40px;
}

.form__message {
  margin-top: 24px;
  text-align: center;
  font-size: 0.875rem;
  min-height: 24px;
}

.form__message.success {
  color: #27ae60;
}

.form__message.error {
  color: #c0392b;
}

/* ===========================
   Footer
=========================== */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 32px;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 48px;
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-white);
  letter-spacing: 0.1em;
}

.footer__nav {
  display: flex;
  gap: 28px;
}

.footer__nav a {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: var(--color-accent-light);
  opacity: 1;
}

.footer__copy {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.3);
}

/* ===========================
   Responsive
=========================== */
@media (max-width: 900px) {
  .container {
    padding: 0 24px;
  }

  .header__nav {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.98);
    padding: 32px 24px 40px;
  }

  .header__nav.open {
    display: block;
  }

  .header__nav-list {
    flex-direction: column;
    gap: 24px;
  }

  .header__nav-list a {
    font-size: 0.95rem;
  }

  .header__menu-btn {
    display: flex;
  }

  .header.scrolled,
  .header.menu-open {
    background: rgba(26, 26, 26, 0.98);
  }

  .interior__grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: repeat(2, 240px);
  }

  .interior__item--large {
    grid-column: 1 / 3;
    grid-row: 1 / 2;
  }

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

  .menu__item:nth-child(odd) {
    border-right: none;
  }

  .gallery__grid {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: 220px;
  }

  .access__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer__inner {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }

  .footer__nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 72px 0;
  }

  .news__item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .interior__grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .interior__item {
    height: 240px;
  }

  .interior__item--large {
    grid-column: 1;
    grid-row: auto;
    height: 280px;
  }

  .gallery__grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 240px;
  }

  .menu__tab {
    padding: 12px 20px;
    font-size: 0.8rem;
  }
}