/* ============================================================
   nagi -凪- ｜ 瀬戸内クラフトジャム LP
   Design tokens
   ============================================================ */
:root {
  /* colors */
  --c-base: #FBF8F2;       /* offwhite / 生成り */
  --c-base-2: #F3ECDF;     /* やや濃い生成り */
  --c-navy: #1F3A4D;       /* main / 瀬戸内の海 */
  --c-navy-2: #162B39;
  --c-orange: #E8902B;     /* accent / 柑橘 */
  --c-yellow: #F2C14E;     /* sub accent */
  --c-ink: #2A2A28;        /* text */
  --c-ink-60: rgba(42, 42, 40, 0.62);
  --c-line: rgba(31, 58, 77, 0.16);

  /* fonts */
  --f-mincho: "Zen Old Mincho", serif;
  --f-gothic: "Zen Kaku Gothic New", sans-serif;
  --f-en: "Cormorant Garamond", serif;

  /* layout */
  --maxw: 1180px;
  --gut: clamp(20px, 5vw, 64px);
  --header-h: 76px;

  /* motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============================================================
   Reset
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--f-gothic);
  color: var(--c-ink);
  background: var(--c-base);
  line-height: 1.85;
  font-size: 16px;
  letter-spacing: 0.02em;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
h1, h2, h3 { font-weight: 500; line-height: 1.4; }

/* ============================================================
   Utilities
   ============================================================ */
.section { padding: clamp(72px, 12vw, 140px) var(--gut); }
.section__en {
  font-family: var(--f-en);
  font-size: 0.95rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 18px;
}
.section__en.light { color: var(--c-yellow); }
.section__title {
  font-family: var(--f-mincho);
  font-size: clamp(1.7rem, 4.4vw, 2.8rem);
  letter-spacing: 0.04em;
  color: var(--c-navy);
}
.section__desc { margin-top: 20px; color: var(--c-ink-60); max-width: 40ch; }
.section__head { max-width: var(--maxw); margin: 0 auto clamp(40px, 6vw, 72px); }

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.95em 2.2em;
  font-family: var(--f-gothic);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.4s var(--ease), background 0.3s, color 0.3s, border-color 0.3s;
}
.btn:hover { transform: translateY(-2px); }
.btn--shop { background: var(--c-navy); color: #fff; }
.btn--shop:hover { background: var(--c-navy-2); }
.btn--light { background: #fff; color: var(--c-navy); }
.btn--light:hover { background: var(--c-base); }
.btn--ghost { background: transparent; color: var(--c-navy); border-color: var(--c-line); }
.btn--ghost:hover { border-color: var(--c-navy); }

/* ---- media placeholder ---- */
.media {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(232,144,43,0.20), rgba(242,193,78,0.30)),
    var(--c-base-2);
  isolation: isolate;
}
.media::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1em;
  text-align: center;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: rgba(31, 58, 77, 0.5);
  z-index: 0;
}
.media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.media--portrait { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 16 / 7; }

/* ---- reveal animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  transition: background 0.4s var(--ease), box-shadow 0.4s, height 0.4s;
}
.header__inner {
  max-width: var(--maxw);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--gut);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header.is-scrolled {
  background: rgba(251, 248, 242, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--c-line);
  height: 64px;
}

.logo { display: flex; align-items: baseline; gap: 0.5em; color: #fff; transition: color 0.4s; }
.logo__mark { font-family: var(--f-mincho); font-size: 1.6rem; font-weight: 700; }
.logo__text { font-family: var(--f-en); font-size: 1.2rem; letter-spacing: 0.22em; }
.header.is-scrolled .logo { color: var(--c-navy); }

.nav { display: flex; align-items: center; gap: clamp(20px, 3vw, 44px); }
.nav__list { display: flex; gap: clamp(16px, 2.4vw, 34px); }
.nav__link {
  position: relative;
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  transition: color 0.4s;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav__link:hover::after { transform: scaleX(1); }
.header.is-scrolled .nav__link { color: var(--c-navy); }
.header.is-scrolled .nav__shop { background: var(--c-navy); color: #fff; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px; height: 40px;
  background: none; border: none; cursor: pointer;
  z-index: 110;
}
.hamburger span {
  display: block;
  width: 26px; height: 2px;
  background: #fff;
  margin: 0 auto;
  transition: transform 0.4s var(--ease), opacity 0.3s, background 0.4s;
}
.header.is-scrolled .hamburger span { background: var(--c-navy); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: var(--header-h) var(--gut) 0;
  color: #fff;
}
.hero__media { position: absolute; inset: 0; aspect-ratio: auto; }
.hero__media::after { color: rgba(255,255,255,0.7); }
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(22,43,57,0.45) 0%, rgba(22,43,57,0.30) 40%, rgba(22,43,57,0.55) 100%);
  z-index: 2;
}
.hero__inner { position: relative; z-index: 3; max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero__en {
  font-family: var(--f-en);
  letter-spacing: 0.4em;
  font-size: 1rem;
  text-transform: uppercase;
  margin-bottom: 24px;
  opacity: 0.92;
}
.hero__copy {
  font-family: var(--f-mincho);
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-shadow: 0 2px 24px rgba(0,0,0,0.25);
}
.hero__lead { margin-top: 28px; font-size: clamp(0.95rem, 2vw, 1.1rem); line-height: 2; text-shadow: 0 1px 12px rgba(0,0,0,0.3); }
.hero__cta { margin-top: 40px; }
.hero__scroll {
  position: absolute;
  left: 50%; bottom: 32px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-family: var(--f-en); font-size: 0.8rem; letter-spacing: 0.28em;
}
.hero__scroll-line { width: 1px; height: 48px; background: rgba(255,255,255,0.7); animation: scrollLine 2.2s var(--ease) infinite; transform-origin: top; }
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  40% { transform: scaleY(1); transform-origin: top; }
  60% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   Story
   ============================================================ */
.story__grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.story__media { transform: translateY(0); }
.story__media:hover img { transform: scale(1.04); }
.story__text { margin-top: 22px; color: var(--c-ink-60); }
.story__text + .story__text { margin-top: 16px; }
.story__sign { margin-top: 32px; font-family: var(--f-en); letter-spacing: 0.16em; color: var(--c-navy); font-size: 0.9rem; }

/* ============================================================
   Products
   ============================================================ */
.products { background: var(--c-base-2); }
.products__grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 3vw, 36px);
}
.product { cursor: pointer; }
.product .media { border-radius: 2px; }
.product:hover .media img { transform: scale(1.06); }
.product__tag {
  margin-top: 18px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--c-orange);
}
.product__tag.season { color: #fff; background: var(--c-navy); display: inline-block; padding: 0.25em 0.9em; border-radius: 999px; }
.product__name { margin-top: 8px; font-family: var(--f-mincho); font-size: 1.18rem; color: var(--c-navy); }
.product__price { margin-top: 10px; font-family: var(--f-en); font-size: 1.15rem; color: var(--c-ink); }
.product__price span { font-size: 0.8rem; color: var(--c-ink-60); }

/* ============================================================
   Process
   ============================================================ */
.process__grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vw, 56px);
}
.process__num { font-family: var(--f-en); font-size: 2.4rem; color: var(--c-yellow); display: block; }
.process__title { margin-top: 10px; font-family: var(--f-mincho); font-size: 1.3rem; color: var(--c-navy); }
.process__text { margin-top: 14px; color: var(--c-ink-60); font-size: 0.95rem; }
.process__media {
  max-width: var(--maxw);
  margin: clamp(48px, 7vw, 88px) auto 0;
  border-radius: 3px;
}

/* ============================================================
   Voice / Maker
   ============================================================ */
.voice { background: var(--c-navy); color: var(--c-base); }
.voice .section__title { color: #fff; }
.voice__grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.voice__text { margin-top: 24px; font-family: var(--f-mincho); font-size: clamp(1.05rem, 2.2vw, 1.3rem); line-height: 2.1; color: rgba(251,248,242,0.92); }
.voice__name { margin-top: 28px; font-family: var(--f-en); letter-spacing: 0.16em; color: var(--c-yellow); }

/* ============================================================
   Gift
   ============================================================ */
.gift {
  position: relative;
  padding: clamp(96px, 16vw, 200px) var(--gut);
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.gift__media { position: absolute; inset: 0; aspect-ratio: auto; }
.gift__media::after { color: rgba(255,255,255,0.7); }
.gift__overlay { position: absolute; inset: 0; background: rgba(22,43,57,0.5); z-index: 2; }
.gift__inner { position: relative; z-index: 3; max-width: 620px; margin: 0 auto; }
.gift__title { font-family: var(--f-mincho); font-size: clamp(1.8rem, 5vw, 3rem); margin-top: 6px; text-shadow: 0 2px 18px rgba(0,0,0,0.3); }
.gift__text { margin: 22px 0 36px; color: rgba(255,255,255,0.92); }

/* ============================================================
   Contact
   ============================================================ */
.contact__head { max-width: var(--maxw); margin: 0 auto; text-align: center; }
.contact__head .section__desc { margin-left: auto; margin-right: auto; }
.contact__actions { margin-top: 36px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.contact__info { max-width: var(--maxw); margin: clamp(56px, 8vw, 96px) auto 0; }
.info { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(24px, 4vw, 48px); border-top: 1px solid var(--c-line); padding-top: clamp(40px, 5vw, 56px); }
.info dt { font-family: var(--f-en); letter-spacing: 0.18em; color: var(--c-orange); font-size: 0.9rem; margin-bottom: 12px; }
.info dd { color: var(--c-ink-60); font-size: 0.92rem; line-height: 1.9; }
.info a { color: var(--c-navy); border-bottom: 1px solid var(--c-line); }

/* ============================================================
   Footer
   ============================================================ */
.footer { background: var(--c-navy-2); color: rgba(251,248,242,0.8); padding: clamp(48px, 7vw, 72px) var(--gut); }
.footer__inner { max-width: var(--maxw); margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 24px; text-align: center; }
.logo--footer { color: #fff; }
.footer__nav { display: flex; gap: clamp(16px, 3vw, 32px); flex-wrap: wrap; justify-content: center; }
.footer__nav a { font-size: 0.88rem; letter-spacing: 0.08em; color: rgba(251,248,242,0.8); transition: color 0.3s; }
.footer__nav a:hover { color: var(--c-yellow); }
.footer__copy { font-size: 0.78rem; color: rgba(251,248,242,0.5); letter-spacing: 0.04em; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .products__grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}
@media (max-width: 768px) {
  .nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 36px;
    background: rgba(31, 58, 77, 0.98);
    backdrop-filter: blur(8px);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease);
    z-index: 105;
  }
  .nav.is-open { transform: translateX(0); }
  .nav__list { flex-direction: column; text-align: center; gap: 28px; }
  .nav__link { color: #fff; font-size: 1.1rem; }
  .header.is-scrolled .nav__link { color: #fff; }
  .nav__shop { color: #fff; border: 1px solid rgba(255,255,255,0.4); }
  .header.is-scrolled .nav__shop { background: transparent; color: #fff; }
  .hamburger { display: flex; }
  .hamburger.is-active span { background: #fff; }
  .hamburger.is-active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .hamburger.is-active span:nth-child(2) { opacity: 0; }
  .hamburger.is-active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  .story__grid { grid-template-columns: 1fr; gap: 36px; }
  .voice__grid { grid-template-columns: 1fr; gap: 36px; }
  .voice__media { order: -1; }
  .process__grid { grid-template-columns: 1fr; gap: 36px; }
  .info { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .products__grid { grid-template-columns: 1fr; gap: 32px; max-width: 360px; }
  .product .media { max-width: 360px; }
  .contact__actions { flex-direction: column; align-items: stretch; }
  .info { grid-template-columns: 1fr; }
}