/* =========================================================
   akaulu — Luxury Skincare Brand (NaruTech Group)
   Global Stylesheet
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --color-bg: #faf8f5;
  --color-bg-alt: #f1ece4;
  --color-ink: #1c1a17;
  --color-ink-soft: #6b6760;
  --color-line: #e3ddd3;
  --color-accent: #8a7456;      /* warm taupe-gold */
  --color-accent-deep: #6a573e;
  --color-white: #ffffff;

  --font-serif: "Cormorant Garamond", "Noto Serif JP", "Times New Roman", serif;
  --font-sans: "Jost", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;

  --maxw: 1280px;
  --gutter: clamp(20px, 5vw, 64px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.8;
  font-size: 15px;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 { font-weight: 400; margin: 0; line-height: 1.25; }

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: inline-block;
  margin-bottom: 18px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.5vw, 52px);
  letter-spacing: 0.02em;
  font-weight: 400;
}

.section {
  padding-block: clamp(72px, 11vw, 150px);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 17px 38px;
  border: 1px solid var(--color-ink);
  background: var(--color-ink);
  color: var(--color-white);
  transition: background 0.4s var(--ease), color 0.4s var(--ease), border-color 0.4s var(--ease);
}
.btn:hover { background: transparent; color: var(--color-ink); }

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
}
.btn--ghost:hover { background: var(--color-ink); color: var(--color-white); }

.link-arrow {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: relative;
}
.link-arrow::after {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
  transition: width 0.4s var(--ease);
}
.link-arrow:hover::after { width: 48px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--gutter);
  transition: background 0.5s var(--ease), padding 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(10px);
  padding-block: 14px;
  box-shadow: 0 1px 0 var(--color-line);
}

.brand {
  font-family: var(--font-serif);
  font-size: 26px;
  letter-spacing: 0.34em;
  padding-left: 0.34em;
  font-weight: 500;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 44px);
}
.nav__list {
  display: flex;
  gap: clamp(18px, 2.5vw, 40px);
}
.nav__list a {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  position: relative;
  padding-block: 4px;
}
.nav__list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: currentColor;
  transition: width 0.4s var(--ease);
}
.nav__list a:hover::after,
.nav__list a.is-active::after { width: 100%; }

.nav__icons { display: flex; gap: 18px; align-items: center; }
.nav__icons svg { width: 19px; height: 19px; stroke: currentColor; fill: none; stroke-width: 1.3; }

.nav-toggle { display: none; width: 30px; height: 18px; position: relative; }
.nav-toggle span {
  position: absolute; left: 0; width: 100%; height: 1.5px; background: var(--color-ink);
  transition: transform 0.4s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle span:nth-child(3) { bottom: 0; }
body.nav-open .nav-toggle span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  color: var(--color-white);
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(20,17,13,0.35) 0%, rgba(20,17,13,0.05) 35%, rgba(20,17,13,0.55) 100%),
    url("https://images.unsplash.com/photo-1556228720-195a672e8a03?auto=format&fit=crop&w=1900&q=80") center/cover no-repeat;
  transform: scale(1.05);
  animation: heroZoom 14s var(--ease) forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }

.hero__inner {
  position: relative;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 0 var(--gutter) clamp(70px, 12vh, 130px);
}
.hero__eyebrow {
  font-size: 12px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  margin-bottom: 26px;
  opacity: 0.85;
}
.hero__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(40px, 8vw, 104px);
  line-height: 1.05;
  letter-spacing: 0.01em;
}
.hero__lead {
  margin-top: 26px;
  max-width: 30ch;
  font-size: 15px;
  line-height: 2;
  opacity: 0.9;
}
.hero__cta { margin-top: 40px; display: flex; gap: 18px; flex-wrap: wrap; }
.hero .btn { border-color: var(--color-white); background: var(--color-white); color: var(--color-ink); }
.hero .btn:hover { background: transparent; color: var(--color-white); }
.hero .btn--ghost { background: transparent; color: var(--color-white); }
.hero .btn--ghost:hover { background: var(--color-white); color: var(--color-ink); }

.hero__scroll {
  position: absolute;
  right: var(--gutter); bottom: clamp(70px, 12vh, 130px);
  writing-mode: vertical-rl;
  font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase;
  display: flex; align-items: center; gap: 16px;
}
.hero__scroll::after { content: ""; width: 1px; height: 56px; background: currentColor; }

/* ---------- Marquee ---------- */
.marquee {
  border-block: 1px solid var(--color-line);
  overflow: hidden;
  padding-block: 20px;
}
.marquee__track {
  display: flex;
  gap: 60px;
  white-space: nowrap;
  width: max-content;
  animation: marquee 32s linear infinite;
}
.marquee span {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.16em;
  color: var(--color-ink-soft);
}
.marquee span::before { content: "—"; margin-right: 60px; color: var(--color-accent); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Pickup ---------- */
.pickup__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 28px);
}
.pickup__card {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}
.pickup__card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.pickup__card:hover img { transform: scale(1.06); }
.pickup__card figcaption {
  position: absolute; left: 0; bottom: 0; right: 0;
  padding: 26px;
  color: var(--color-white);
  background: linear-gradient(180deg, transparent, rgba(20,17,13,0.6));
}
.pickup__card .cap-en { font-family: var(--font-serif); font-size: 26px; }
.pickup__card .cap-jp { font-size: 12px; letter-spacing: 0.16em; opacity: 0.88; margin-top: 4px; }

/* ---------- Philosophy ---------- */
.philosophy { background: var(--color-bg-alt); }
.philosophy__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(36px, 6vw, 96px);
  align-items: center;
}
.philosophy__media { aspect-ratio: 4/5; overflow: hidden; }
.philosophy__media img { width: 100%; height: 100%; object-fit: cover; }
.philosophy__body p {
  color: var(--color-ink-soft);
  margin: 22px 0 0;
  max-width: 46ch;
}
.philosophy__title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.4;
}
.philosophy__cta { margin-top: 40px; }

/* ---------- Products ---------- */
.products__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(36px, 5vw, 64px);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(18px, 2.2vw, 36px);
}
.product-card { display: block; }
.product-card__media {
  position: relative;
  aspect-ratio: 4/5;
  background: var(--color-white);
  overflow: hidden;
  border: 1px solid var(--color-line);
}
.product-card__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.9s var(--ease), opacity 0.6s var(--ease);
}
.product-card:hover .product-card__media img { transform: scale(1.05); }
.product-card__tag {
  position: absolute; top: 14px; left: 14px;
  font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase;
  background: var(--color-ink); color: var(--color-white);
  padding: 6px 12px;
}
.product-card__cat {
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--color-accent); margin-top: 20px;
}
.product-card__name {
  font-family: var(--font-serif);
  font-size: 23px; margin-top: 6px;
}
.product-card__desc { font-size: 13px; color: var(--color-ink-soft); margin-top: 6px; }
.product-card__price { margin-top: 12px; font-size: 14px; letter-spacing: 0.06em; }

/* ---------- Feature ---------- */
.feature { background: var(--color-ink); color: var(--color-bg); overflow: hidden; }
.feature__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  min-height: 80vh;
}
.feature__media { position: relative; overflow: hidden; }
.feature__media img { width: 100%; height: 100%; object-fit: cover; }
.feature__body {
  display: flex; flex-direction: column; justify-content: center;
  padding: clamp(48px, 7vw, 110px);
}
.feature .eyebrow { color: #c9b48f; }
.feature__title {
  font-family: var(--font-serif);
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.1;
}
.feature__text { color: rgba(250,248,245,0.72); margin: 24px 0 0; max-width: 42ch; }
.feature__meta { display: flex; gap: 40px; margin-top: 40px; }
.feature__meta dt { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: #c9b48f; }
.feature__meta dd { font-family: var(--font-serif); font-size: 22px; margin: 6px 0 0; }
.feature__cta { margin-top: 44px; }
.feature .btn { background: var(--color-bg); color: var(--color-ink); border-color: var(--color-bg); }
.feature .btn:hover { background: transparent; color: var(--color-bg); }

/* ---------- Ingredients / Values ---------- */
.values__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vw, 64px);
  margin-top: clamp(40px, 5vw, 70px);
}
.value__num {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-accent);
}
.value__line { height: 1px; background: var(--color-line); margin: 18px 0 22px; }
.value h3 { font-family: var(--font-serif); font-size: 26px; }
.value p { color: var(--color-ink-soft); margin-top: 12px; font-size: 14px; }

/* ---------- Topics ---------- */
.topics { background: var(--color-bg-alt); }
.topics__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(36px, 5vw, 60px);
}
.topic__media { aspect-ratio: 16/11; overflow: hidden; }
.topic__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.9s var(--ease); }
.topic:hover .topic__media img { transform: scale(1.06); }
.topic__meta { display: flex; gap: 16px; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-ink-soft); margin-top: 18px; }
.topic__meta .cat { color: var(--color-accent); }
.topic__title { font-family: var(--font-serif); font-size: 22px; line-height: 1.4; margin-top: 10px; }

/* ---------- Newsletter ---------- */
.newsletter { text-align: center; }
.newsletter__inner { max-width: 620px; margin-inline: auto; }
.newsletter p { color: var(--color-ink-soft); margin: 18px 0 36px; }
.newsletter__form {
  display: flex; gap: 0; border-bottom: 1px solid var(--color-ink);
  max-width: 480px; margin-inline: auto;
}
.newsletter__form input {
  flex: 1; border: none; background: transparent; padding: 16px 4px;
  font-family: inherit; font-size: 14px; letter-spacing: 0.06em; color: var(--color-ink);
}
.newsletter__form input:focus { outline: none; }
.newsletter__form button {
  font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; padding: 0 8px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: rgba(250,248,245,0.78);
  padding-block: clamp(56px, 8vw, 96px) 36px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: clamp(28px, 4vw, 60px);
}
.footer__brand .brand { color: var(--color-bg); }
.footer__brand p { margin: 20px 0 0; max-width: 32ch; font-size: 13px; color: rgba(250,248,245,0.6); }
.footer__col h4 { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: #c9b48f; margin-bottom: 18px; }
.footer__col li { margin-bottom: 12px; }
.footer__col a { font-size: 13px; transition: color 0.3s var(--ease); }
.footer__col a:hover { color: var(--color-bg); }
.footer__social { display: flex; gap: 16px; margin-top: 6px; }
.footer__social svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.3; }
.footer__bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: 24px;
  border-top: 1px solid rgba(250,248,245,0.14);
  font-size: 11px; letter-spacing: 0.14em; color: rgba(250,248,245,0.5);
}

/* ---------- Page Hero (sub pages) ---------- */
.page-hero {
  padding-top: clamp(150px, 20vh, 220px);
  padding-bottom: clamp(48px, 7vw, 90px);
  border-bottom: 1px solid var(--color-line);
}
.page-hero .breadcrumb { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-ink-soft); margin-bottom: 22px; }
.page-hero .breadcrumb a:hover { color: var(--color-accent); }
.page-hero h1 { font-family: var(--font-serif); font-size: clamp(40px, 7vw, 84px); }
.page-hero p { color: var(--color-ink-soft); margin-top: 18px; max-width: 52ch; }

/* ---------- Filter bar ---------- */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.filter-bar button {
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  padding: 11px 24px; border: 1px solid var(--color-line); border-radius: 999px;
  transition: all 0.35s var(--ease); color: var(--color-ink-soft);
}
.filter-bar button:hover { border-color: var(--color-ink); color: var(--color-ink); }
.filter-bar button.is-active { background: var(--color-ink); color: var(--color-white); border-color: var(--color-ink); }

/* ---------- About blocks ---------- */
.about-statement {
  font-family: var(--font-serif);
  font-size: clamp(26px, 4vw, 48px);
  line-height: 1.5;
  max-width: 22ch;
}
.about-split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 96px); align-items: center;
}
.about-split:nth-child(even) .about-split__media { order: 2; }
.about-split__media { aspect-ratio: 4/5; overflow: hidden; }
.about-split__media img { width: 100%; height: 100%; object-fit: cover; }
.about-split h3 { font-family: var(--font-serif); font-size: clamp(24px, 3vw, 36px); }
.about-split p { color: var(--color-ink-soft); margin-top: 18px; max-width: 46ch; }
.about-stack { display: grid; gap: clamp(56px, 9vw, 130px); }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 4vw, 56px);
  border-top: 1px solid var(--color-line);
  padding-top: clamp(40px, 5vw, 64px);
}
.stat__num { font-family: var(--font-serif); font-size: clamp(40px, 6vw, 76px); line-height: 1; }
.stat__num small { font-size: 0.4em; color: var(--color-accent); }
.stat__label { font-size: 12px; letter-spacing: 0.14em; color: var(--color-ink-soft); margin-top: 14px; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid; grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(40px, 7vw, 110px);
}
.contact-info h3 { font-family: var(--font-serif); font-size: 30px; }
.contact-info dl { margin-top: 36px; }
.contact-info dt { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--color-accent); margin-top: 26px; }
.contact-info dd { margin: 6px 0 0; font-size: 15px; }
.form-row { display: grid; gap: 8px; margin-bottom: 26px; }
.form-row.two { grid-template-columns: 1fr 1fr; gap: 26px; }
.form-row label { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-ink-soft); }
.form-row label .req { color: var(--color-accent); }
.form-row input,
.form-row textarea,
.form-row select {
  font-family: inherit; font-size: 15px; color: var(--color-ink);
  background: transparent; border: none; border-bottom: 1px solid var(--color-line);
  padding: 12px 2px; transition: border-color 0.35s var(--ease);
}
.form-row textarea { resize: vertical; min-height: 130px; }
.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus { outline: none; border-color: var(--color-accent); }
.form-consent { display: flex; gap: 12px; align-items: flex-start; font-size: 13px; color: var(--color-ink-soft); margin-bottom: 30px; }
.form-consent input { margin-top: 5px; accent-color: var(--color-accent); }
.form-msg {
  margin-top: 20px; font-size: 14px; color: var(--color-accent-deep);
  opacity: 0; transition: opacity 0.4s var(--ease);
}
.form-msg.show { opacity: 1; }

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .feature__grid { grid-template-columns: 1fr; }
  .feature__media { aspect-ratio: 16/10; }
}

@media (max-width: 860px) {
  .nav__list, .nav__icons { display: none; }
  .nav-toggle { display: block; }
  .nav.is-open .nav__list {
    display: flex; flex-direction: column; gap: 26px;
    position: fixed; inset: 0; z-index: 90;
    background: var(--color-bg);
    align-items: center; justify-content: center;
  }
  .nav.is-open .nav__list a { font-size: 18px; }
  .pickup__grid { grid-template-columns: 1fr; }
  .philosophy__grid,
  .about-split,
  .contact-grid { grid-template-columns: 1fr; }
  .about-split:nth-child(even) .about-split__media { order: 0; }
  .values__grid, .topics__grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .product-grid { grid-template-columns: 1fr; }
  .form-row.two { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .hero__scroll { display: none; }
}