/* ================================
   案A: 深海から食卓へ ─ スクロールで沈んでいく色の物語
================================= */
:root {
  --paper: #f6f1e4;
  --ink: #101418;
  --ink-soft: #4a5258;

  --zone-color: #7fd8c8;
  --zone-color-2: #0b2e33;

  --coral: #e2543a;
  --gold: #d9a441;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  color: var(--paper);
  background: #06181c;
  line-height: 1.9;
  overflow-x: hidden;
}

h1, h2, h3, .mincho {
  font-family: "Shippori Mincho", "Hiragino Mincho ProN", serif;
}

a { color: inherit; }

/* ===== 背景の色レイヤー(スクロールでゆっくり変化) ===== */
.mood-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: radial-gradient(120% 120% at 50% -10%, var(--zone-color) 0%, var(--zone-color-2) 55%, #060f12 100%);
  transition: background 1.6s ease;
}

body[data-zone="hero"] .mood-layer { --zone-color: #7fd8c8; --zone-color-2: #0b2e33; }
body[data-zone="pick"] .mood-layer { --zone-color: #103a3f; --zone-color-2: #061417; }
body[data-zone="about"] .mood-layer { --zone-color: #234a45; --zone-color-2: #0a1c1c; }
body[data-zone="menu"] .mood-layer { --zone-color: #16323a; --zone-color-2: #060f13; }
body[data-zone="philosophy"] .mood-layer { --zone-color: #2c2118; --zone-color-2: #120c08; }
body[data-zone="access"] .mood-layer { --zone-color: #4a3216; --zone-color-2: #1c1208; }

/* ===== ヘッダー ===== */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px clamp(20px, 5vw, 56px);
  mix-blend-mode: difference;
}

.top-nav .brand {
  font-size: 15px;
  letter-spacing: 0.25em;
  font-weight: 700;
}

.top-nav nav {
  display: flex;
  gap: clamp(14px, 3vw, 32px);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.top-nav nav a { text-decoration: none; opacity: 0.85; }
.top-nav nav a:hover { opacity: 1; }

/* ===== 各ゾーン共通 ===== */
.zone {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px clamp(24px, 6vw, 100px);
  position: relative;
}

.zone-inner {
  max-width: 980px;
  width: 100%;
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 18px;
}

.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 1s cubic-bezier(.16,.84,.44,1), transform 1s cubic-bezier(.16,.84,.44,1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }

/* ===== ヒーロー ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url("images/water-ripple.jpg") center/cover no-repeat;
  opacity: 0.5;
  filter: saturate(1.1) brightness(0.75);
  transform: translateY(var(--parallax, 0));
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-content .eyebrow { display: block; }

.hero-content h1 {
  font-size: clamp(56px, 12vw, 128px);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.1;
  text-shadow: 0 4px 40px rgba(0,0,0,0.4);
}

.hero-content p.tagline {
  margin-top: 22px;
  font-size: clamp(14px, 2vw, 18px);
  letter-spacing: 0.08em;
  opacity: 0.9;
}

.scroll-cue {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  letter-spacing: 0.3em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0.75;
}

.scroll-cue .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, currentColor, transparent);
  animation: scroll-cue-move 2s ease-in-out infinite;
}

@keyframes scroll-cue-move {
  0% { transform: scaleY(0.3); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0.3); transform-origin: bottom; }
}

/* ===== 本日のおすすめ ===== */
.pick-card {
  border: 1px solid rgba(246,241,228,0.35);
  border-radius: 4px;
  padding: clamp(28px, 5vw, 56px);
  background: rgba(6, 20, 23, 0.35);
  backdrop-filter: blur(6px);
  position: relative;
}

.pick-card .stamp {
  position: absolute;
  top: -18px;
  right: clamp(20px, 5vw, 48px);
  background: var(--coral);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.15em;
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.pick-date {
  font-size: 13px;
  opacity: 0.75;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.pick-name {
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 700;
  margin-bottom: 16px;
}

.pick-desc {
  max-width: 56ch;
  opacity: 0.9;
  margin-bottom: 18px;
}

.pick-price {
  font-size: 15px;
  letter-spacing: 0.05em;
  color: var(--gold);
  font-weight: 700;
}

.pick-note {
  margin-top: 22px;
  font-size: 11.5px;
  opacity: 0.6;
  letter-spacing: 0.05em;
}

/* ===== お店について ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}

.about-photo {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 4px;
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 78% 45%;
}

.about-text h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 24px;
  line-height: 1.5;
}

.about-text p {
  opacity: 0.88;
  margin-bottom: 16px;
}

.fact-list {
  margin-top: 28px;
  display: grid;
  gap: 10px;
  font-size: 13.5px;
}

.fact-list div {
  display: flex;
  gap: 16px;
}

.fact-list dt {
  width: 6.5em;
  flex-shrink: 0;
  opacity: 0.6;
  letter-spacing: 0.05em;
}

/* ===== 商品ラインナップ ===== */
.menu-zone h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 12px;
}

.menu-zone .lead {
  opacity: 0.85;
  max-width: 60ch;
  margin-bottom: 48px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: rgba(246,241,228,0.15);
}

.product-card {
  background: #0c2226;
  padding: 40px 28px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("images/fish-ice.jpg");
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  transition: opacity 0.5s ease, transform 0.6s ease;
  transform: scale(1.05);
}

.product-card:hover::before {
  opacity: 0.32;
  transform: scale(1.12);
}

.product-card .num {
  font-size: 12px;
  opacity: 0.6;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  position: relative;
}

.product-card h3 {
  font-size: 22px;
  margin-bottom: 10px;
  position: relative;
}

.product-card p {
  font-size: 13px;
  opacity: 0.8;
  position: relative;
}

/* ===== こだわり ===== */
.philosophy {
  position: relative;
  text-align: center;
}

.philosophy-bg {
  position: absolute;
  inset: 0;
  background: url("images/sashimi.jpg") center/cover no-repeat;
  opacity: 0.28;
}

.philosophy-inner {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.philosophy h2 {
  font-size: clamp(26px, 4.5vw, 42px);
  line-height: 1.7;
  font-weight: 700;
}

.philosophy .lead {
  margin-top: 28px;
  font-size: 14px;
  opacity: 0.8;
  max-width: 56ch;
  margin-left: auto;
  margin-right: auto;
}

/* ===== アクセス ===== */
.access-zone h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 40px;
}

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 5vw, 64px);
}

.info-list {
  display: grid;
  gap: 20px;
}

.info-row dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  opacity: 0.6;
  margin-bottom: 6px;
}

.info-row dd {
  font-size: 16px;
}

.info-row .caveat {
  font-size: 11px;
  opacity: 0.55;
  margin-top: 4px;
}

.map-embed {
  border-radius: 4px;
  overflow: hidden;
  min-height: 260px;
  border: 1px solid rgba(246,241,228,0.2);
}

.map-embed iframe {
  width: 100%;
  height: 100%;
  min-height: 260px;
  border: 0;
  filter: grayscale(0.3) invert(0.92) contrast(0.9);
}

/* ===== フッター ===== */
footer {
  padding: 60px clamp(24px, 6vw, 100px) 48px;
  text-align: center;
  font-size: 12px;
  opacity: 0.6;
  letter-spacing: 0.05em;
}

/* ===== レスポンシブ ===== */
@media (max-width: 780px) {
  .about-grid,
  .access-grid {
    grid-template-columns: 1fr;
  }

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

  .top-nav nav {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none; opacity: 1; transform: none; }
  .scroll-cue .line { animation: none; }
  .mood-layer { transition: none; }
}