/* ========================================
   杜の栖 - たい焼き専門店
   スタイルシート
======================================== */

/* リセット・基本設定 */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* カラー */
  --color-primary: #D4A574;
  --color-primary-dark: #B8895A;
  --color-primary-light: #E8C9A8;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-bg: #FFFFFF;
  --color-bg-alt: #FAF7F4;
  --color-border: #E5E5E5;

  /* フォント */
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;

  /* サイズ */
  --max-width: 1200px;
  --header-height: 70px;

  /* トランジション */
  --transition: 0.3s ease;
}

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

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

img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
}

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

ul {
  list-style: none;
}

/* コンテナ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* セクション共通 */
.section {
  padding: 80px 0;
}

.section__title {
  font-family: var(--font-serif);
  font-size: 2rem;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section__title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--color-primary);
  margin: 15px auto 0;
}

.section__lead {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

/* SP専用改行 */
.sp-only {
  display: none;
}

/* ========================================
   ヘッダー
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo a {
  display: block;
}

.header__logo-img {
  height: 50px;
  width: auto;
  transition: var(--transition);
}

.header__logo a:hover .header__logo-img {
  opacity: 0.8;
}

/* ナビゲーション */
.nav__list {
  display: flex;
  gap: 40px;
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition);
}

.nav__link:hover::after {
  width: 100%;
}

/* ハンバーガーメニュー */
.hamburger {
  display: none;
  width: 30px;
  height: 25px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1001;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  position: absolute;
  left: 0;
  transition: var(--transition);
}

.hamburger__line:nth-child(1) {
  top: 0;
}

.hamburger__line:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger__line:nth-child(3) {
  bottom: 0;
}

/* ハンバーガー開いた状態 */
.hamburger.is-active .hamburger__line:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active .hamburger__line:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* ========================================
   ヒーローセクション
======================================== */
.hero {
  height: 100vh;
  min-height: 600px;
  background: linear-gradient(135deg, #E8C9A8 0%, #D4A574 100%);
  background-image: url('../images/main-visual.jpg');
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0.4) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  padding: 20px;
}

.hero__subtitle {
  font-size: 1rem;
  letter-spacing: 0.3em;
  margin-bottom: 20px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 25px;
  text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.hero__text {
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 40px;
}

.hero__btn {
  display: inline-block;
  padding: 15px 40px;
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 500;
  border-radius: 50px;
  transition: var(--transition);
}

.hero__btn:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(212, 165, 116, 0.4);
}

/* ========================================
   当店について
======================================== */
.about {
  background-color: var(--color-bg);
}

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

.about__content--vertical {
  grid-template-columns: 1fr;
  gap: 40px;
  text-align: center;
}

.about__content--vertical .about__image {
  max-width: 600px;
  margin: 0 auto;
}

.about__content--vertical .calligraphy__content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about__content--vertical .calligraphy__text {
  justify-content: center;
}

.about__image {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.about__image:hover img {
  transform: scale(1.05);
}

.about__heading {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 25px;
  color: var(--color-primary-dark);
}

.about__text p {
  margin-bottom: 15px;
  color: var(--color-text-light);
}

.about__text p:last-child {
  margin-bottom: 0;
}

/* ========================================
   メニュー
======================================== */
.menu {
  background-color: var(--color-bg-alt);
}

.menu__category {
  margin-bottom: 60px;
}

.menu__category:last-child {
  margin-bottom: 0;
}

.menu__category-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background-color: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
}

.menu__category-header--reverse {
  direction: rtl;
}

.menu__category-header--reverse > * {
  direction: ltr;
}

.menu__category-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-primary-light);
}

.menu__category-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.menu__category-image--zoom img {
  transform: scale(1.3);
  object-position: center 30%;
}

.menu__category-image--zoom-out {
  aspect-ratio: auto;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #fff;
}

.menu__category-image--zoom-out img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 350px;
  object-fit: contain;
}

.menu__category-header:hover .menu__category-image img {
  transform: scale(1.05);
}

.menu__category-info {
  padding: 30px 40px 30px 0;
}

.menu__category-header--reverse .menu__category-info {
  padding: 30px 0 30px 40px;
}

.menu__category-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  margin-bottom: 10px;
  color: var(--color-primary-dark);
}

.menu__category-desc {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.menu__list {
  border-top: 1px solid var(--color-border);
}

.menu__list--2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 20px;
}

.menu__list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.menu__list-name {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.menu__list-badge {
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}

.menu__list-price {
  color: var(--color-primary-dark);
  font-weight: 700;
  white-space: nowrap;
}

.menu__list-note {
  margin-top: 15px;
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 以下は使用しないが互換性のため残す */
.menu__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.menu__card {
  background-color: #fff;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
  position: relative;
}

.menu__image {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

.menu__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.menu__card:hover .menu__image img {
  transform: scale(1.1);
}

.menu__body {
  padding: 20px;
}

.menu__name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.menu__desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 15px;
  line-height: 1.6;
}

.menu__price {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.menu__price span {
  font-size: 1.5rem;
  margin-right: 2px;
}

/* ========================================
   店舗情報
======================================== */
.shop {
  background-color: var(--color-bg);
}

.shop__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.shop__list {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.shop__item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 20px;
  padding-bottom: 25px;
  border-bottom: 1px solid var(--color-border);
}

.shop__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.shop__item dt {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.shop__item dd {
  color: var(--color-text-light);
}

.shop__item dd a {
  color: var(--color-primary-dark);
}

.shop__item dd a:hover {
  text-decoration: underline;
}

.shop__item dd small {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.shop__map {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.shop__map iframe {
  display: block;
}

.shop__map-note {
  font-size: 0.8rem;
  color: var(--color-text-light);
  text-align: center;
  padding: 10px;
  background-color: var(--color-bg-alt);
}

/* ========================================
   フッター
======================================== */
.footer {
  background-color: #333;
  color: #fff;
  padding: 40px 0;
}

.footer__inner {
  text-align: center;
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--color-primary-light);
}

.footer__copy {
  font-size: 0.8rem;
  color: #999;
}

/* ========================================
   レスポンシブ（タブレット）
======================================== */
@media (max-width: 1024px) {
  .menu__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   レスポンシブ（モバイル）
======================================== */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .sp-only {
    display: inline;
  }

  .section {
    padding: 60px 0;
  }

  .section__title {
    font-size: 1.6rem;
    margin-bottom: 40px;
  }

  /* ヘッダー・ナビ */
  .hamburger {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--color-bg);
    padding: 100px 40px 40px;
    transition: var(--transition);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
  }

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

  .nav__list {
    flex-direction: column;
    gap: 30px;
  }

  .nav__link {
    font-size: 1.1rem;
  }

  /* ヒーロー */
  .hero {
    min-height: 500px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 0.85rem;
  }

  .hero__text {
    font-size: 0.9rem;
  }

  .hero__btn {
    padding: 12px 30px;
    font-size: 0.9rem;
  }

  /* About */
  .about__content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about__heading {
    font-size: 1.3rem;
  }

  /* Menu */
  .menu__category {
    margin-bottom: 40px;
  }

  .menu__category-header {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .menu__category-header--reverse {
    direction: ltr;
  }

  .menu__category-image {
    aspect-ratio: 16 / 9;
  }

  .menu__category-image--zoom-out {
    aspect-ratio: auto;
    min-height: auto;
    padding: 20px;
    background-color: #fff;
  }

  .menu__category-image--zoom-out img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 250px;
    object-fit: contain;
  }

  .menu__category-info {
    padding: 25px 20px;
  }

  .menu__category-header--reverse .menu__category-info {
    padding: 25px 20px;
  }

  .menu__category-title {
    font-size: 1.3rem;
  }

  .menu__category-desc {
    font-size: 0.85rem;
  }

  .menu__list--2col {
    grid-template-columns: 1fr;
  }

  .menu__list-item {
    padding: 10px 0;
  }

  .menu__list-name {
    font-size: 0.9rem;
  }

  .menu__list-price {
    font-size: 0.9rem;
  }

  .menu__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .menu__card {
    display: grid;
    grid-template-columns: 120px 1fr;
  }

  .menu__badge {
    top: 10px;
    left: 10px;
    font-size: 0.65rem;
    padding: 3px 8px;
  }

  .menu__image {
    aspect-ratio: 1 / 1;
    border-radius: 10px 0 0 10px;
  }

  .menu__body {
    padding: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .menu__name {
    font-size: 1rem;
    margin-bottom: 5px;
  }

  .menu__desc {
    font-size: 0.8rem;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .menu__price span {
    font-size: 1.2rem;
  }

  /* Shop */
  .shop__content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .shop__item {
    grid-template-columns: 80px 1fr;
    gap: 15px;
  }

  /* フッター */
  .footer {
    padding: 30px 0;
  }
}

/* オーバーレイ（モバイルメニュー用） */
.overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

/* 画像プレースホルダー */
.menu__image img[src*="images/"],
.about__image img[src*="images/"],
.hero {
  background-color: var(--color-primary-light);
}

/* ========================================
   筆文字ブロック
======================================== */
.calligraphy__content {
  font-family: 'Yuji Syuku', 'Noto Serif JP', serif;
}

.calligraphy__title {
  font-size: 2.5rem;
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--color-primary-dark);
  letter-spacing: 0.1em;
}

.calligraphy__date {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
  letter-spacing: 0.05em;
}

.calligraphy__text {
  font-size: 1.4rem;
  line-height: 2.2;
  color: var(--color-text);
  writing-mode: vertical-rl;
  text-orientation: upright;
  height: 400px;
}

.calligraphy__text p {
  margin-bottom: 0;
  margin-left: 20px;
}

.calligraphy__text p:last-child {
  margin-left: 0;
}

.calligraphy__text .accent {
  color: #C41E3A;
  font-size: 1.5em;
  font-weight: 500;
}

/* 筆文字ブロック レスポンシブ */
@media (max-width: 768px) {
  .calligraphy__title {
    font-size: 1.8rem;
  }

  .calligraphy__text {
    font-size: 0.85rem;
    line-height: 1.8;
    height: 280px;
  }

  .calligraphy__text .accent {
    font-size: 1.3em;
  }

  .about__content--vertical .calligraphy__text {
    overflow-x: auto;
    max-width: 100%;
  }
}