/* =========================================
   Base Settings & Variables
   ========================================= */
:root {
  /* Palette: チャコールブラウン x 生成り x 金茶 */
  --c-primary: #3E3A36;
  /* 濃い焦げ茶（ほぼ黒に近い） */
  --c-secondary: #8C7B6D;
  /* 落ち着いたグレージュ */
  --c-accent: #C7A26B;
  /* 彩度を抑えたゴールド */
  --c-bg: #F9F8F4;
  /* 温かみのあるオフホワイト */
  --c-white: #FFFFFF;

  --font-serif: 'Zen Old Mincho', serif;
  --font-sans: 'Shippori Antique B1', sans-serif;

  --ease-out: cubic-bezier(0.215, 0.61, 0.355, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  color: var(--c-primary);
  background-color: var(--c-bg);
  line-height: 1.8;
  letter-spacing: 0.05em;
  overflow-x: hidden;
  position: relative;
}

/* ノイズテクスチャ（紙のような質感） */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.container {
  width: 90%;
  max-width: 1080px;
  margin: 0 auto;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* =========================================
   Typography
   ========================================= */
h1,
h2,
h3,
.logo,
.section-label {
  font-family: var(--font-serif);
}

/* =========================================
   Header
   ========================================= */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 0;
  transition: padding 0.3s ease, background 0.3s ease;
}

/* スクロール時に背景を白くする処理はJSでクラス付与推奨だが、
   ここでは簡易的にbackdrop-filterを使用 */
.header {
  background: rgba(249, 248, 244, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(62, 58, 54, 0.05);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.nav-desktop {
  display: none;
  gap: 40px;
}

.nav-link {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  color: var(--c-secondary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--c-primary);
  transition: width 0.3s var(--ease-out);
}

.nav-link:hover {
  color: var(--c-primary);
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile Menu Button */
.menu-button {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 102;
}

.menu-button span {
  width: 24px;
  height: 1px;
  background-color: var(--c-primary);
  transition: all 0.3s ease;
}

.menu-button.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-button.active span:nth-child(2) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-mobile {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--c-bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 101;
}

.nav-mobile.show {
  opacity: 1;
  pointer-events: auto;
}

.nav-mobile .nav-link {
  font-size: 1.5rem;
  font-family: var(--font-serif);
}

@media (min-width: 768px) {

  .menu-button,
  .nav-mobile {
    display: none;
  }

  .nav-desktop {
    display: flex;
  }
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.hero-subtitle {
  font-size: 0.9rem;
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.2;
  margin-bottom: 24px;
  font-feature-settings: "palt";
  word-break: keep-all;
  overflow-wrap: break-word;
}

.hero-desc {
  color: var(--c-secondary);
  margin-bottom: 32px;
}

.hero-visual {
  position: relative;
}

.hero-img {
  border-radius: 4px;
  /* あえて角丸を小さくしてシックに */
  box-shadow: 20px 20px 0 rgba(199, 162, 107, 0.1);
  /* 影ではなく色面をずらす */
  width: 100%;
  max-height: 60vh;
  object-fit: cover;
}

@media (min-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
  }

  .hero-visual {
    order: 2;
  }

  .hero-content {
    order: 1;
    max-width: 600px;
  }
}

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

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

.section-header.center {
  text-align: center;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.section-subtitle {
  color: var(--c-secondary);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

/* =========================================
   Info Section
   ========================================= */
.info-section {
  padding: 80px 0;
  background-color: #F2F0EB;
  /* わずかに濃い背景 */
}

.info-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.info-visual {
  position: relative;
}

.map-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  filter: grayscale(20%);
  /* 少し彩度を落とす */
}

.floating-tag {
  position: absolute;
  top: 0;
  left: 0;
  background: var(--c-primary);
  color: var(--c-white);
  padding: 8px 16px;
  font-size: 0.8rem;
  font-family: var(--font-serif);
  letter-spacing: 0.1em;
}

.section-label {
  font-size: 1.2rem;
  border-bottom: 1px solid var(--c-accent);
  display: inline-block;
  margin-bottom: 30px;
  padding-bottom: 8px;
}

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

.info-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  align-items: baseline;
}

.info-item dt {
  font-family: var(--font-serif);
  color: var(--c-accent);
  font-weight: 600;
}

.info-item ul {
  list-style: none;
}

.info-item ul li::before {
  content: '・';
  color: var(--c-accent);
}

@media (min-width: 768px) {
  .info-wrapper {
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }
}

/* =========================================
   Features (About)
   ========================================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-card {
  padding: 40px;
  border: 1px solid #E5E0D8;
  background: var(--c-white);
  text-align: center;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
  border-color: var(--c-accent);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--c-accent);
}

.feature-card h3 {
  margin-bottom: 16px;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--c-secondary);
  line-height: 1.8;
}

/* =========================================
   Menu Section
   ========================================= */
.menu-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 60px;
  margin-bottom: 40px;
}

.menu-card {
  position: relative;
  /* ホバー検知用 */
}

.menu-thumb {
  overflow: hidden;
  margin-bottom: 20px;
  aspect-ratio: 1/1;
}

.menu-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.menu-card:hover .menu-thumb img {
  transform: scale(1.05);
}

.menu-name-price {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
  border-bottom: 1px dotted #ccc;
  padding-bottom: 4px;
}

.menu-name-price h3 {
  font-size: 1.1rem;
}

.menu-name-price .price {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.1rem;
}

.menu-detail .desc {
  font-size: 0.9rem;
  color: var(--c-secondary);
}

.menu-note {
  text-align: center;
  margin-top: 40px;
  font-family: var(--font-serif);
}

.highlight {
  color: #B64848;
  /* 赤みを入れて強調 */
  font-weight: bold;
  font-size: 1.2em;
}

/* =========================================
   Class Info (Footer area)
   ========================================= */
.class-banner {
  background: var(--c-primary);
  color: var(--c-white);
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
}

.class-text {
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.class-name {
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--c-accent);
}

.class-img-wrapper {
  height: 300px;
}

.class-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 768px) {
  .class-banner {
    grid-template-columns: 1fr 1fr;
  }

  .class-img-wrapper {
    height: auto;
  }
}

/* =========================================
   Footer
   ========================================= */
.footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid #E5E0D8;
}

.copyright {
  font-size: 0.8rem;
  color: var(--c-secondary);
  letter-spacing: 0.1em;
}

/* =========================================
   Animations
   ========================================= */
/* 基本のフェードイン（下から上） */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}

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

/* 左からスライドイン */
.slide-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}

.slide-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 右からスライドイン */
.slide-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}

.slide-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* スケールアップ */
.scale-up {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}

.scale-up.visible {
  opacity: 1;
  transform: scale(1);
}

/* ディレイバリエーション */
.delay-1 {
  transition-delay: 0.15s;
}

.delay-2 {
  transition-delay: 0.3s;
}

.delay-3 {
  transition-delay: 0.45s;
}

.delay-4 {
  transition-delay: 0.6s;
}

/* Language Button */
.lang-button {
  background: transparent;
  border: 1px solid var(--c-primary);
  color: var(--c-primary);
  padding: 6px 12px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: 20px;
  border-radius: 2px;
}

.lang-button:hover {
  background: var(--c-primary);
  color: var(--c-white);
}

@media (max-width: 767px) {
  .lang-button {
    margin-left: auto;
    margin-right: 16px;
    font-size: 0.8rem;
    padding: 4px 10px;
  }
}

/* =========================================
   Loading Overlay
   ========================================= */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--c-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--c-secondary);
  border-top-color: var(--c-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* =========================================
   Scroll to Top Button
   ========================================= */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--c-primary);
  color: var(--c-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 99;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  background-color: var(--c-accent);
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.scroll-to-top svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 767px) {
  .scroll-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
}