/* ==========================================================================
   緑匠 × 抹茶飴 — RYOKU-SHO
   ========================================================================== */

:root {
  --green: #7aad3a;
  --bg: #0c0f0a;
  --bg-alt: #0e120b;
  --bg-hover: #141810;
  --fg: #f0ebe0;
  --fg-muted: #7a7a68;
  --fg-dim: #3a4a2a;
  --fg-soft: #c8c4b4;
  --gold: #c9a84c;
  --border: rgba(122, 173, 58, 0.15);
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

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

a {
  cursor: pointer;
}

::-webkit-scrollbar {
  width: 4px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: #3a4a2a;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Fade in on scroll ─────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s ease, transform .9s ease;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Shared typography primitives ──────────────────────────────────────── */
.label {
  font-family: var(--font-mono);
  color: var(--green);
  font-size: .65rem;
  letter-spacing: .3em;
  margin: 0 0 1.5rem;
}

.section-title {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  line-height: 1.45;
  letter-spacing: .05em;
  margin: 0;
}

.divider {
  width: 40px;
  height: 1px;
  background: var(--green);
  margin: 2.5rem 0;
}

.body-text {
  font-family: var(--font-sans);
  color: var(--fg-muted);
  font-size: .875rem;
  line-height: 2.2;
  letter-spacing: .08em;
  margin: 0;
}
.body-text.mt {
  margin-top: 1.5rem;
}

/* ── Nav ────────────────────────────────────────────────────────────────── */
#site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 4rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 2rem;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background .5s, border-color .5s, backdrop-filter .5s;
}
#site-nav.scrolled {
  border-bottom: 1px solid var(--border);
  background: rgba(12, 15, 10, .95);
  backdrop-filter: blur(12px);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  margin-right: auto;
}

.logo-img {
  height: 48px;
  width: auto;
}

.logo-text {
  font-family: var(--font-serif);
  color: var(--gold);
  font-size: .82rem;
  letter-spacing: .2em;
  line-height: 1.4;
}

.nav-desktop {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .68rem;
  letter-spacing: .14em;
  text-decoration: none;
  transition: color .3s;
}
.nav-link:hover {
  color: var(--green);
}

.nav-cta {
  border: 1px solid rgba(201, 168, 76, 0.5);
  color: var(--gold) !important;
  padding: .625rem 1.25rem;
  transition: background .3s ease, color .3s ease;
}

.nav-cta:hover {
  background: var(--gold);
  color: var(--bg) !important;
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger-bar {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--fg);
  transition: transform .3s, opacity .3s;
}
.nav-burger.open .burger-bar-1 {
  transform: rotate(45deg) translate(4px, 4px);
}
.nav-burger.open .burger-bar-2 {
  opacity: 0;
}
.nav-burger.open .burger-bar-3 {
  transform: rotate(-45deg) translate(4px, -4px);
}

.mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(12, 15, 10, .98);
  border-top: 1px solid var(--border);
  padding: 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.mobile-menu[hidden] {
  display: none;
}
.mobile-link {
  font-family: var(--font-mono);
  color: var(--fg-soft);
  font-size: .85rem;
  letter-spacing: .12em;
  text-decoration: none;
}

/* ── Hero ───────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  background: var(--bg);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .35;
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg) 45%, rgba(12, 15, 10, .5) 80%, rgba(12, 15, 10, .2) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 4rem 7rem;
  max-width: 860px;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  color: var(--green);
  font-size: .68rem;
  letter-spacing: .3em;
  margin: 0 0 2rem;
}
.hero-title {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: .05em;
  margin: 0;
}
.hero-title-accent {
  color: var(--green);
}
.hero-desc {
  font-family: var(--font-sans);
  color: var(--fg-muted);
  font-size: .9rem;
  line-height: 2.1;
  margin-top: 2.5rem;
  max-width: 38ch;
  letter-spacing: .08em;
}
.hero-buttons {
  display: flex;
  gap: 1.5rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .2em;
  padding: .85rem 2.2rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: opacity .3s, border-color .3s;
}
.btn-primary {
  color: var(--bg);
  background: var(--green);
}
.btn-primary:hover {
  opacity: .8;
}
.btn-secondary {
  color: var(--fg-soft);
  border: 1px solid rgba(200, 196, 180, .3);
}
.btn-secondary:hover {
  border-color: rgba(122, 173, 58, .5);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  right: 4rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
  font-family: var(--font-mono);
  font-size: .6rem;
  color: var(--fg-muted);
  letter-spacing: .2em;
}
.scroll-line {
  width: 1px;
  height: 60px;
  background: rgba(122, 173, 58, .3);
}

/* ── Story ──────────────────────────────────────────────────────────────── */
.story {
  background: var(--bg);
  padding: 8rem 4rem;
}
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}
.story-image-wrap {
  position: relative;
}
.story-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  filter: brightness(.8) contrast(1.1);
}
.story-image-border {
  position: absolute;
  bottom: -16px;
  left: -16px;
  width: 60%;
  height: 30%;
  border: 1px solid rgba(122, 173, 58, .2);
  pointer-events: none;
}
.story-stats {
  margin-top: 2.5rem;
  display: flex;
  gap: 3rem;
}
.stat-num {
  font-family: var(--font-serif);
  color: var(--green);
  font-size: 1.8rem;
  font-weight: 300;
  letter-spacing: .05em;
  margin: 0;
}
.stat-label {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .6rem;
  letter-spacing: .2em;
  margin: .3rem 0 0;
}

/* ── Products ───────────────────────────────────────────────────────────── */
.products {
  background: var(--bg-alt);
  padding: 8rem 4rem;
}
.products-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 4rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.products-link {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .2em;
  color: var(--fg-muted);
  border-bottom: 1px solid rgba(122, 173, 58, .3);
  padding-bottom: .25rem;
  text-decoration: none;
  transition: color .3s;
}
.products-link:hover {
  color: var(--green);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(122, 173, 58, .1);
}

.product-card {
  background: var(--bg-alt);
  transition: background .4s;
  cursor: pointer;
}
.product-card:hover {
  background: var(--bg-hover);
}
.product-image-wrap {
  overflow: hidden;
  position: relative;
  height: 360px;
}
.product-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(.75);
  transform: scale(1);
  transition: transform .7s;
}
.product-card:hover .product-image {
  transform: scale(1.06);
}
.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .2em;
  color: var(--bg);
  background: var(--green);
  padding: .2rem .65rem;
}
.product-info {
  padding: 1.75rem;
}
.product-num {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .6rem;
  letter-spacing: .2em;
  margin: 0 0 .5rem;
}
.product-name {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: .08em;
  margin: 0 0 .25rem;
}
.product-name-en {
  font-family: var(--font-mono);
  color: #4a7c2a;
  font-size: .6rem;
  letter-spacing: .1em;
  margin: 0 0 1rem;
}
.product-desc {
  font-family: var(--font-sans);
  color: #5a5a4a;
  font-size: .8rem;
  line-height: 1.9;
  letter-spacing: .05em;
  margin: 0 0 1.75rem;
}
.product-footer {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.price {
  font-family: var(--font-mono);
  color: var(--fg);
  font-size: 1.05rem;
  letter-spacing: .05em;
}
.unit {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .6rem;
  letter-spacing: .1em;
}

/* ── Origin ─────────────────────────────────────────────────────────────── */
.origin {
  position: relative;
  padding: 8rem 4rem;
  background: var(--bg);
}
.origin-intro {
  max-width: 560px;
}
.tenets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-top: 5rem;
}
.tenet {
  border-top: 1px solid rgba(122, 173, 58, .2);
  padding-top: 2.5rem;
}
.tenet-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.tenet-char {
  font-family: var(--font-serif);
  color: var(--green);
  font-size: 2.8rem;
  font-weight: 300;
  line-height: 1;
}
.tenet-num {
  font-family: var(--font-mono);
  color: var(--fg-dim);
  font-size: .58rem;
  letter-spacing: .25em;
  margin-top: .5rem;
}
.tenet-en {
  font-family: var(--font-mono);
  color: #4a7c2a;
  font-size: .62rem;
  letter-spacing: .2em;
  margin: 0 0 .75rem;
}
.tenet-jp {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: .08em;
  margin: 0 0 1rem;
}

/* ── Partnership ────────────────────────────────────────────────────────── */
.partnership {
  background: var(--bg-alt);
  padding: 8rem 4rem;
}
.partnership-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}
.partner-box {
  margin-top: 3rem;
  padding: 1.75rem;
  border: 1px solid rgba(122, 173, 58, .15);
  background: rgba(122, 173, 58, .04);
}
.partner-label {
  font-family: var(--font-mono);
  color: #4a7c2a;
  font-size: .58rem;
  letter-spacing: .25em;
  margin: 0 0 .75rem;
}
.partner-name {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: .1em;
  margin: 0;
}
.partner-sub {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .6rem;
  letter-spacing: .12em;
  margin: .4rem 0 0;
}

.partnership-image-wrap {
  background: var(--bg-hover);
  padding: 2px;
  position: relative;
}
.partnership-image {
  width: 100%;
  height: 520px;
  object-fit: cover;
  filter: brightness(.85) saturate(.9);
}
.partnership-image-border {
  position: absolute;
  top: -16px;
  right: -16px;
  width: 50%;
  height: 25%;
  border: 1px solid rgba(122, 173, 58, .15);
  pointer-events: none;
}
.partnership-stats {
  margin-top: 1.5rem;
  display: flex;
  gap: 2rem;
}
.pstat {
  flex: 1;
  border-top: 1px solid rgba(122, 173, 58, .15);
  padding-top: 1rem;
}
.pstat-label {
  font-family: var(--font-mono);
  color: #4a7c2a;
  font-size: .58rem;
  letter-spacing: .2em;
  margin: 0;
}
.pstat-num {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: 1.5rem;
  font-weight: 300;
  margin: 0;
}

/* ── Ingredients ────────────────────────────────────────────────────────── */
.ingredients {
  background: var(--bg);
  padding: 8rem 4rem;
}
.ingredients-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 5rem;
  flex-wrap: wrap;
  gap: 2rem;
}
.ingredients-intro {
  max-width: 36ch;
}
.ingredients-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: rgba(122, 173, 58, .08);
}
.ingredient-row {
  background: var(--bg);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 80px 1fr 2fr 60px;
  gap: 2rem;
  align-items: center;
  transition: background .3s;
  cursor: default;
}
.ingredient-row:hover {
  background: var(--bg-hover);
}
.ingredient-index {
  font-family: var(--font-mono);
  color: var(--fg-dim);
  font-size: .62rem;
  letter-spacing: .2em;
  margin: 0;
}
.ingredient-name {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: .08em;
  margin: 0;
}
.ingredient-sub {
  font-family: var(--font-mono);
  color: #4a7c2a;
  font-size: .58rem;
  letter-spacing: .15em;
  margin: .3rem 0 0;
}
.ingredient-icon {
  font-family: var(--font-serif);
  color: var(--fg-dim);
  font-size: 2rem;
  font-weight: 300;
  text-align: right;
  transition: color .4s;
}
.ingredient-row:hover .ingredient-icon {
  color: var(--green);
}

/* ── Gift ───────────────────────────────────────────────────────────────── */
.gift {
  position: relative;
  padding: 8rem 4rem;
  background: var(--bg-alt);
}
.gift-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}
.gift-list {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.gift-item {
  display: flex;
  gap: 1.5rem;
  border-bottom: 1px solid rgba(122, 173, 58, .1);
  padding-bottom: 1rem;
}
.gift-label {
  font-family: var(--font-mono);
  color: #4a7c2a;
  font-size: .6rem;
  letter-spacing: .15em;
  min-width: 80px;
  margin: 0;
}
.gift-value {
  font-family: var(--font-sans);
  color: var(--fg-soft);
  font-size: .82rem;
  letter-spacing: .06em;
  margin: 0;
}

.gift-image-wrap {
  position: relative;
}
.gift-image {
  width: 100%;
  height: 600px;
  object-fit: cover;
  filter: brightness(.8) contrast(1.05);
}
.gift-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14, 18, 11, .8) 0%, transparent 50%);
}
.gift-quote-wrap {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
}
.gift-quote {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.7;
  letter-spacing: .1em;
  margin: 0;
}
.gift-quote-author {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .62rem;
  letter-spacing: .2em;
  margin: .75rem 0 0;
}

/* ── Quote ──────────────────────────────────────────────────────────────── */
.quote {
  background: var(--bg);
  border-top: 1px solid rgba(122, 173, 58, .1);
  padding: 6rem 4rem;
  text-align: center;
}
.quote-text {
  font-family: var(--font-serif);
  color: var(--fg);
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: .12em;
  margin: 0;
}
.quote-sub {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .62rem;
  letter-spacing: .3em;
  margin: 1.5rem 0 0;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-logo {
  height: 40px;
  width: auto;
}

.footer-brand-jp {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--fg);
  margin: 0;
}

.footer-brand-en {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--fg-muted);
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.footer-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--green);
}

.footer-copyright {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  margin: 0;
  width: 100%;
  text-align: center;
}

@media (min-width: 768px) {
  .site-footer {
    padding: 3rem 4rem;
    justify-content: space-between;
    text-align: left;
  }

  .footer-copyright {
    width: auto;
    text-align: left;
  }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
  .nav-desktop {
    display: none !important;
  }
  .nav-burger {
    display: flex !important;
  }
  #site-nav {
    padding: 1.25rem 1.5rem;
  }
  section, .story, .products, .origin, .partnership, .ingredients, .gift {
    padding: 5rem 1.5rem !important;
  }
  .hero-content {
    padding: 0 1.5rem 5rem;
  }
  .scroll-indicator {
    right: 1.5rem;
  }
  .story-grid,
  .partnership-grid,
  .gift-grid {
    grid-template-columns: 1fr !important;
    gap: 3rem !important;
  }
  .tenets-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
}

@media (min-width: 901px) {
  .mobile-menu {
    display: none !important;
  }
}

@media (max-width: 700px) {
  .ingredient-row {
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
  }
  .ingredient-icon {
    text-align: left;
  }
}

@media (max-width: 600px) {
  .products-grid {
    grid-template-columns: 1fr !important;
  }
  .story-image,
  .gift-image {
    height: 340px;
  }
  .partnership-image {
    height: 320px;
  }
}

/* -------------------- LANG SWITCHER -------------------- */
.lang-switcher {
  position: relative;
  display: flex;
  align-items: center;
}

.lang-details {
  position: relative;
}

.lang-current {
  display: flex;
  align-items: center;
  gap: .4rem;
  list-style: none;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--fg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .42rem .85rem;
  transition: color .3s, border-color .3s;
}
.lang-current::-webkit-details-marker { display: none; }
.lang-current::marker { content: ""; }

.lang-current:hover,
.lang-details[open] .lang-current {
  color: var(--green);
  border-color: var(--green);
}

.lang-current-arrow {
  font-size: .55rem;
  transition: transform .3s;
}
.lang-details[open] .lang-current-arrow {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + .6rem);
  right: 0;
  min-width: 140px;
  list-style: none;
  margin: 0;
  padding: .4rem;
  background: rgba(12, 15, 10, .98);
  border: 1px solid var(--border);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  z-index: 200;
}

.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  padding: .55rem .7rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--fg-muted);
  text-decoration: none;
  transition: background .25s, color .25s;
}
.lang-option:hover {
  background: rgba(122, 173, 58, .14);
  color: var(--fg);
}
.lang-option.is-active {
  color: var(--gold);
}
.lang-option.is-active::after {
  content: "\2713";
  font-size: .65rem;
}

@media (max-width: 640px) {
  .lang-current {
    padding: .32rem .6rem;
    font-size: .6rem;
  }
}