/* ===================================
   さかなや 水嶋鮮魚店 - スタイルシート
   和風・伝統的デザイン
   =================================== */

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

:root {
  --color-indigo: #1B3A5C;
  --color-indigo-dark: #0F2440;
  --color-indigo-light: #2A5A8C;
  --color-white: #FFFFFF;
  --color-ink: #333333;
  --color-ink-light: #666666;
  --color-gold: #C5A55A;
  --color-gold-light: #D4BC7C;
  --color-bg: #FAFAF7;
  --color-bg-warm: #F5F0E8;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
}

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

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

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

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- セクションヘッダー --- */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header__en {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-header__title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-indigo);
  letter-spacing: 0.1em;
}

.section-header__line {
  width: 60px;
  height: 2px;
  background: var(--color-gold);
  margin: 14px auto 0;
}

/* --- ボタン --- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 4px;
  transition: all 0.3s ease;
  cursor: pointer;
  letter-spacing: 0.05em;
}

.btn--primary {
  background: var(--color-gold);
  color: var(--color-white);
  border: 2px solid var(--color-gold);
}

.btn--primary:hover {
  background: var(--color-gold-light);
  border-color: var(--color-gold-light);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

/* ===================================
   ヘッダー
   =================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 36, 64, 0.95);
  backdrop-filter: blur(8px);
  transition: background 0.3s ease;
}

.header__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.header__logo {
  display: flex;
  flex-direction: column;
  color: var(--color-white);
}

.header__logo-sub {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  opacity: 0.8;
}

.header__logo-main {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.header__nav-list {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 8px;
}

.header__nav-link {
  display: block;
  padding: 8px 16px;
  color: var(--color-white);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

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

.header__nav-link--tel {
  background: var(--color-gold);
  border-radius: 4px;
  font-weight: 700;
}

.header__nav-link--tel:hover {
  background: var(--color-gold-light);
  color: var(--color-white);
}

/* ハンバーガーメニュー */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.header__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  transition: all 0.3s ease;
  transform-origin: center;
}

.header__hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.header__hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===================================
   ヒーロー
   =================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-indigo);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(42, 90, 140, 0.4) 0%, transparent 70%),
    radial-gradient(ellipse at 80% 20%, rgba(197, 165, 90, 0.15) 0%, transparent 50%);
  overflow: hidden;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 36, 64, 0.3) 0%, rgba(15, 36, 64, 0.6) 100%);
}

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

.hero__sub {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.3em;
  margin-bottom: 16px;
  color: var(--color-gold-light);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

.hero__desc {
  font-size: 1rem;
  line-height: 2;
  opacity: 0.9;
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 波模様（ヒーロー下部） */
.hero__wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 3;
  background: var(--color-bg);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C200,120 400,0 600,60 C800,120 1000,0 1200,60 L1200,120 L0,120 Z' fill='%23fff'/%3E%3C/svg%3E");
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C200,120 400,0 600,60 C800,120 1000,0 1200,60 L1200,120 L0,120 Z' fill='%23fff'/%3E%3C/svg%3E");
  mask-size: cover;
  -webkit-mask-size: cover;
}

/* ===================================
   店舗紹介
   =================================== */
.about {
  padding: 100px 0 80px;
  background: var(--color-bg);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 70px;
}

.about__image-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-warm);
  border: 2px dashed var(--color-gold-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-light);
  font-family: var(--font-serif);
  font-size: 1.1rem;
}

.about__heading {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-indigo);
  line-height: 1.7;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.about__desc {
  margin-bottom: 16px;
  color: var(--color-ink-light);
  line-height: 2;
}

.about__features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.about__feature {
  text-align: center;
  padding: 30px 20px;
  background: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
}

.about__feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.about__feature-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-indigo);
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}

.about__feature-desc {
  font-size: 0.9rem;
  color: var(--color-ink-light);
  line-height: 1.8;
}

/* ===================================
   取扱商品
   =================================== */
.products {
  padding: 90px 0;
  background: var(--color-bg-warm);
}

.products__lead {
  text-align: center;
  color: var(--color-ink-light);
  margin-top: -30px;
  margin-bottom: 50px;
  font-size: 1rem;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 30px;
}

.products__card {
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.products__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.products__card-image {
  width: 100%;
  aspect-ratio: 3 / 2;
  background: var(--color-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

.products__card-body {
  padding: 20px;
}

.products__card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-indigo);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.products__card-desc {
  font-size: 0.85rem;
  color: var(--color-ink-light);
  line-height: 1.8;
}

.products__note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-ink-light);
}

/* ===================================
   アクセス・店舗情報
   =================================== */
.access {
  padding: 90px 0;
  background: var(--color-bg);
}

.access__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.access__table {
  width: 100%;
  border-collapse: collapse;
}

.access__table th,
.access__table td {
  padding: 14px 16px;
  border-bottom: 1px solid #e0ddd5;
  text-align: left;
  vertical-align: top;
  font-size: 0.95rem;
}

.access__table th {
  width: 110px;
  font-family: var(--font-serif);
  color: var(--color-indigo);
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.05em;
}

.access__table td a {
  color: var(--color-indigo-light);
  text-decoration: underline;
}

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

.access__map iframe {
  border-radius: 8px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

/* ===================================
   フッター
   =================================== */
.footer {
  position: relative;
  background: var(--color-indigo-dark);
  color: var(--color-white);
  padding: 70px 0 0;
}

.footer__wave {
  position: absolute;
  top: -79px;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--color-indigo-dark);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C200,120 400,0 600,60 C800,120 1000,0 1200,60 L1200,120 L0,120 Z' fill='%23fff'/%3E%3C/svg%3E");
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C200,120 400,0 600,60 C800,120 1000,0 1200,60 L1200,120 L0,120 Z' fill='%23fff'/%3E%3C/svg%3E");
  mask-size: cover;
  -webkit-mask-size: cover;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.footer__address {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-bottom: 8px;
}

.footer__tel a {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-gold-light);
}

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

.footer__shipping-title,
.footer__sns-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 10px;
  color: var(--color-gold-light);
  letter-spacing: 0.05em;
}

.footer__shipping-desc {
  font-size: 0.85rem;
  opacity: 0.8;
  line-height: 1.8;
}

.footer__sns-links {
  display: flex;
  gap: 16px;
}

.footer__sns-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: var(--color-white);
  transition: all 0.3s ease;
}

.footer__sns-link:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
}

.footer__bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.8rem;
  opacity: 0.6;
}

/* ===================================
   レスポンシブ（タブレット）
   =================================== */
@media (max-width: 768px) {
  .header__nav {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(15, 36, 64, 0.98);
    padding: 20px;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .header__nav.is-open {
    transform: translateY(0);
  }

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

  .header__nav-link {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    text-align: center;
  }

  .header__nav-link--tel {
    border-bottom: none;
    margin-top: 10px;
  }

  .header__hamburger {
    display: flex;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__desc {
    font-size: 0.9rem;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

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

  .access__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }

  .footer__sns-links {
    justify-content: center;
  }
}

/* ===================================
   レスポンシブ（スマートフォン）
   =================================== */
@media (max-width: 480px) {
  .hero {
    min-height: 90vh;
  }

  .hero__title {
    font-size: 1.6rem;
  }

  .hero__sub {
    font-size: 0.8rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .section-header__title {
    font-size: 1.4rem;
  }

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

  .about__heading {
    font-size: 1.2rem;
  }
}

/* ===================================
   フェードインアニメーション
   =================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* カードに遅延をつける */
.products__card.fade-in:nth-child(2) { transition-delay: 0.1s; }
.products__card.fade-in:nth-child(3) { transition-delay: 0.2s; }
.products__card.fade-in:nth-child(4) { transition-delay: 0.3s; }
.products__card.fade-in:nth-child(5) { transition-delay: 0.4s; }
.products__card.fade-in:nth-child(6) { transition-delay: 0.5s; }

.about__feature.fade-in:nth-child(2) { transition-delay: 0.15s; }
.about__feature.fade-in:nth-child(3) { transition-delay: 0.3s; }