/* ============================================
   和み食堂 太郎 — デザインシステム & スタイル
   ============================================ */

/* --- デザイントークン（CSS変数） --- */
:root {
  /* カラーパレット */
  --color-ivory: #FAF6F0;
  --color-beige: #F0E8DA;
  --color-beige-deep: #E5D9C5;
  --color-brown-light: #A07C50;
  --color-brown: #6B4C30;
  --color-brown-dark: #3C2415;
  --color-brown-bg: #5C422E;
  --color-green: #2D5A3D;
  --color-green-hover: #3A7350;
  --color-green-light: #4A7F5E;
  --color-white: #FFFFFF;
  --color-overlay: rgba(42, 28, 16, 0.55);

  /* タイポグラフィ */
  --font-en: 'Cormorant Garamond', serif;
  --font-ja: 'Noto Serif JP', serif;
  --font-ja-gothic: 'Zen Kaku Gothic New', sans-serif;

  /* スペーシング */
  --section-padding: 140px 0;
  --section-padding-mobile: 80px 0;
  --container-max: 1200px;
  --container-padding: 0 40px;
  --container-padding-mobile: 0 20px;

  /* アニメーション */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --transition-base: 0.4s var(--ease-out);
}

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

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

body {
  font-family: var(--font-ja-gothic);
  font-weight: 300;
  color: var(--color-brown-dark);
  background-color: var(--color-ivory);
  line-height: 1.9;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* ============================================
   ヘッダー
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 40px;
  transition: background-color 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out), padding 0.5s var(--ease-out);
}

.site-header.scrolled {
  background-color: rgba(250, 246, 240, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 40px rgba(60, 36, 21, 0.08);
  padding: 0 40px;
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 90px;
  transition: height 0.5s var(--ease-out);
}

.site-header.scrolled .header-inner {
  height: 70px;
}

.header-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: color var(--transition-base);
}

.logo-sub {
  font-family: var(--font-ja-gothic);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-brown-light);
  transition: color var(--transition-base);
}

.logo-main {
  font-family: var(--font-ja);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--color-white);
  transition: color var(--transition-base);
}

.site-header.scrolled .logo-main {
  color: var(--color-brown-dark);
}

.site-header.scrolled .logo-sub {
  color: var(--color-brown-light);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

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

.nav-link {
  font-family: var(--font-ja-gothic);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-base);
}

.site-header.scrolled .nav-link {
  color: var(--color-brown-dark);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-green);
  transition: width var(--transition-base);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background-color: var(--color-green);
  color: var(--color-white);
  border-radius: 50px;
  font-family: var(--font-ja-gothic);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.nav-cta:hover {
  background-color: var(--color-green-hover);
  transform: translateY(-1px);
}

.line-icon {
  flex-shrink: 0;
}

/* ハンバーガーメニュー */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1100;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.site-header.scrolled .menu-toggle span {
  background-color: var(--color-brown-dark);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ============================================
   ヒーローセクション
   ============================================ */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('images/hero-food.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    180deg,
    rgba(42, 28, 16, 0.45) 0%,
    rgba(42, 28, 16, 0.30) 40%,
    rgba(42, 28, 16, 0.55) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 0 20px;
}

.hero-sub-en {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s var(--ease-out) 0.3s forwards;
}

.hero-title {
  font-family: var(--font-ja);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 1.7;
  margin-bottom: 28px;
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s var(--ease-out) 0.6s forwards;
}

.hero-title-line {
  display: block;
}

.hero-desc {
  font-family: var(--font-ja-gothic);
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s var(--ease-out) 0.9s forwards;
}

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ヒーローCTA */
.cta-button--hero {
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s var(--ease-out) 1.2s forwards;
}

/* スクロールヒント */
.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 2;
  color: rgba(255, 255, 255, 0.6);
}

.hero-scroll-hint span {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.4; transform: scaleY(0.6); }
}

/* ============================================
   CTAボタン共通
   ============================================ */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 40px;
  border-radius: 50px;
  font-family: var(--font-ja-gothic);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.cta-button--hero {
  background-color: var(--color-green);
  color: var(--color-white);
}

.cta-button--hero:hover {
  background-color: var(--color-green-hover);
}

.cta-button--green {
  background-color: var(--color-green);
  color: var(--color-white);
}

.cta-button--green:hover {
  background-color: var(--color-green-hover);
}

.cta-button--light {
  background-color: var(--color-white);
  color: var(--color-green);
  border: 1px solid rgba(45, 90, 61, 0.2);
}

.cta-button--light:hover {
  background-color: var(--color-green);
  color: var(--color-white);
}

.cta-button--full {
  width: 100%;
  justify-content: center;
}

.cta-button--small {
  padding: 10px 28px;
  font-size: 0.8125rem;
}

/* ============================================
   セクション共通
   ============================================ */
.section {
  padding: var(--section-padding);
}

.section--ivory {
  background-color: var(--color-ivory);
}

.section--beige {
  background-color: var(--color-beige);
}

.section--brown {
  background-color: var(--color-brown-bg);
  color: var(--color-ivory);
}

/* セクション見出し */
.section-heading {
  text-align: center;
  margin-bottom: 80px;
}

.section-heading__en {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.15em;
  color: var(--color-brown-light);
  margin-bottom: 12px;
}

.section-heading--light .section-heading__en {
  color: var(--color-beige-deep);
}

.section-heading__ja {
  font-family: var(--font-ja);
  font-size: 0.9375rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  position: relative;
  display: inline-block;
  padding-top: 20px;
}

.section-heading__ja::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 1px;
  background-color: var(--color-brown-light);
}

.section-heading--light .section-heading__ja {
  color: var(--color-beige);
}

.section-heading--light .section-heading__ja::before {
  background-color: var(--color-beige-deep);
}

/* ============================================
   コンセプトセクション
   ============================================ */
.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.concept-image {
  overflow: hidden;
  border-radius: 4px;
}

.concept-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}

.concept-image:hover img {
  transform: scale(1.04);
}

.concept-catch {
  font-family: var(--font-ja);
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.9;
  color: var(--color-brown-dark);
  margin-bottom: 32px;
}

.concept-body {
  font-size: 0.9375rem;
  line-height: 2.2;
  color: var(--color-brown);
  margin-bottom: 20px;
  letter-spacing: 0.06em;
}

.concept-body:last-of-type {
  margin-bottom: 48px;
}

/* ============================================
   メニューセクション
   ============================================ */
.menu-intro {
  text-align: center;
  font-size: 0.9375rem;
  line-height: 2.2;
  color: var(--color-beige);
  margin-top: -40px;
  margin-bottom: 80px;
  letter-spacing: 0.06em;
}

.menu-category {
  margin-bottom: 80px;
}

.menu-category:last-of-type {
  margin-bottom: 60px;
}

.menu-category__title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 48px;
  text-align: center;
}

.menu-category__en {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.15em;
  color: var(--color-beige-deep);
}

.menu-category__ja {
  font-family: var(--font-ja-gothic);
  font-size: 0.8125rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--color-beige);
  opacity: 0.8;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.menu-card {
  background-color: rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.menu-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}

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

.menu-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}

.menu-card:hover .menu-card__image img {
  transform: scale(1.06);
}

.menu-card__info {
  padding: 28px 28px 32px;
}

.menu-card__name {
  font-family: var(--font-ja);
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  color: var(--color-ivory);
}

.menu-card__desc {
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--color-beige);
  opacity: 0.8;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.menu-card__price {
  font-family: var(--font-en);
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-beige-deep);
}

.menu-cta {
  text-align: center;
  margin-top: 20px;
}

/* ============================================
   ギャラリーセクション
   ============================================ */
.gallery-intro {
  text-align: center;
  font-size: 0.9375rem;
  line-height: 2.2;
  color: var(--color-brown);
  margin-top: -40px;
  margin-bottom: 60px;
  letter-spacing: 0.06em;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 16px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
}

.gallery-item--large {
  grid-column: 1 / 3;
  grid-row: 1 / 3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 16px 16px;
  background: linear-gradient(to top, rgba(42, 28, 16, 0.7), transparent);
  color: var(--color-white);
  font-family: var(--font-ja-gothic);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.gallery-item:hover .gallery-item__caption {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   アクセスセクション
   ============================================ */
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.access-map {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 30px rgba(60, 36, 21, 0.08);
}

.access-map iframe {
  display: block;
}

.access-detail {
  margin-bottom: 40px;
}

.access-shop-name {
  font-family: var(--font-ja);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  margin-bottom: 32px;
  color: var(--color-brown-dark);
}

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

.access-list__item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(60, 36, 21, 0.1);
}

.access-list__item:first-child {
  border-top: 1px solid rgba(60, 36, 21, 0.1);
}

.access-list__item dt {
  font-family: var(--font-ja-gothic);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-brown-light);
  padding-top: 2px;
}

.access-list__item dd {
  font-size: 0.875rem;
  line-height: 1.8;
  letter-spacing: 0.06em;
}

/* ============================================
   フッター
   ============================================ */
.site-footer {
  background-color: var(--color-brown-dark);
  color: var(--color-beige);
  padding: 80px 40px 40px;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  margin-bottom: 40px;
}

.footer-logo-sub {
  display: block;
  font-family: var(--font-ja-gothic);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-brown-light);
  margin-bottom: 6px;
}

.footer-logo-main {
  display: block;
  font-family: var(--font-ja);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--color-ivory);
  margin-bottom: 16px;
}

.footer-address {
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--color-brown-light);
  letter-spacing: 0.06em;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-links a {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--color-beige);
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.footer-links a:hover {
  opacity: 1;
}

.footer-cta {
  margin-bottom: 48px;
}

.footer-copy {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--color-brown-light);
  opacity: 0.6;
}

/* ============================================
   スクロールアニメーション
   ============================================ */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   レスポンシブ（タブレット: 768px以下）
   ============================================ */
@media (max-width: 900px) {
  .concept-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .concept-image img {
    height: 360px;
  }

  .menu-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

  .gallery-item--large {
    grid-column: 1 / 3;
    grid-row: auto;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 100px 0;
    --container-padding: 0 24px;
  }

  .site-header {
    padding: 0 20px;
  }

  .site-header.scrolled {
    padding: 0 20px;
  }

  .header-inner {
    height: 70px;
  }

  .site-header.scrolled .header-inner {
    height: 60px;
  }

  .logo-main {
    font-size: 1.0625rem;
  }

  /* モバイルナビ */
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background-color: var(--color-ivory);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
    transition: right 0.5s var(--ease-out);
    box-shadow: -4px 0 40px rgba(0, 0, 0, 0.1);
  }

  .main-nav.open {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 28px;
  }

  .nav-link {
    font-size: 1rem;
    color: var(--color-brown-dark) !important;
    letter-spacing: 0.2em;
  }

  .nav-cta {
    background-color: var(--color-green);
    color: var(--color-white);
    padding: 14px 36px;
    font-size: 0.9375rem;
  }

  .menu-toggle {
    display: flex;
  }

  /* セクション見出し */
  .section-heading {
    margin-bottom: 56px;
  }

  .section-heading__en {
    font-size: 2rem;
  }

  /* メニュー */
  .menu-intro {
    margin-bottom: 56px;
  }

  .menu-category {
    margin-bottom: 56px;
  }

  /* ギャラリー */
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-item--large {
    grid-column: 1;
    grid-row: auto;
  }

  .gallery-item img {
    aspect-ratio: 4 / 3;
  }

  .gallery-item__caption {
    opacity: 1;
    transform: translateY(0);
  }

  /* アクセス */
  .access-map iframe {
    height: 300px;
  }

  .access-list__item {
    grid-template-columns: 70px 1fr;
    gap: 16px;
  }

  /* フッター */
  .site-footer {
    padding: 60px 24px 32px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 20px;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: 80px 0;
    --container-padding: 0 20px;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-desc {
    font-size: 0.8125rem;
  }

  .cta-button {
    padding: 14px 32px;
    font-size: 0.875rem;
  }

  .concept-image img {
    height: 260px;
  }

  .concept-catch {
    font-size: 1.25rem;
  }

  .menu-card__info {
    padding: 20px 20px 24px;
  }

  .access-shop-name {
    font-size: 1.25rem;
  }
}

/* モバイルメニューオーバーレイ */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(42, 28, 16, 0.4);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s var(--ease-out);
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: auto;
}