/* ==========================================================================
   Merchant Mock — shared shell for industry demo pages.
   Industries override the --m-* tokens to retint the same template.
   ========================================================================== */

.m {
  --m-bg: #fafafa;
  --m-bg-deep: #f0ede6;
  --m-surface: #ffffff;
  --m-ink: #1a1814;
  --m-ink-soft: #4a463f;
  --m-ink-faint: #8a8278;
  --m-line: rgba(0,0,0,0.08);
  --m-line-strong: rgba(0,0,0,0.18);
  --m-accent: #1A1814;
  --m-accent-fg: #ffffff;
  --m-tag-bg: #f0ede6;
  --m-display: "Noto Serif JP", "Yu Mincho", serif;
  --m-body: "Noto Sans JP", system-ui, sans-serif;

  background: var(--m-bg);
  color: var(--m-ink);
  font-family: var(--m-body);
  min-height: 100vh;
}

/* ---- merchant header ---- */
.m__topnav {
  background: var(--jbi-paper);
  border-bottom: 1px solid var(--aurora-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--jbi-ink-muted);
}
.m__topnav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 8px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.m__topnav .powered {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--aurora-ink);
}
.m__topnav .powered em {
  font-family: var(--font-serif-jp);
  font-style: normal;
  font-weight: 700;
  font-size: 13px;
  color: var(--aurora-orange);
  margin: 0 2px;
}
.m__topnav .back { color: var(--jbi-ink-muted); }
.m__topnav .back:hover { color: var(--aurora-orange); }

.m__header {
  background: var(--m-surface);
  border-bottom: 1px solid var(--m-line);
}
.m__header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
}
.m__brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.m__brand-name {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--m-ink);
}
.m__brand-tagline {
  font-size: 11px;
  color: var(--m-ink-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.m__nav {
  display: flex;
  gap: 28px;
  align-items: center;
}
.m__nav a {
  font-size: 13px;
  color: var(--m-ink-soft);
  font-weight: 500;
}
.m__nav a:hover { color: var(--m-accent); }
.m__cart-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--m-line-strong);
  background: var(--m-surface);
  font-size: 13px;
  font-weight: 600;
  color: var(--m-ink);
  cursor: pointer;
  transition: all 160ms var(--ease-out);
}
.m__cart-btn:hover { background: var(--m-ink); color: var(--m-surface); }
.m__cart-count {
  background: var(--m-accent);
  color: var(--m-accent-fg);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  font-weight: 600;
}

/* ---- merchant hero ---- */
.m__hero {
  padding: 64px 32px 56px;
  background: var(--m-bg-deep);
  position: relative;
  overflow: hidden;
}
.m__hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: end;
}
.m__hero-tag {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--m-accent);
  text-transform: uppercase;
  font-weight: 500;
}
.m__hero-title {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: clamp(36px, 4.6vw, 64px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--m-ink);
  margin: 16px 0 0;
}
.m__hero-sub {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--m-ink-soft);
  max-width: 540px;
}
.m__hero-meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--m-ink-faint);
  letter-spacing: 0.04em;
}
.m__hero-meta .row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--m-line);
  align-items: baseline;
}
.m__hero-meta .row strong {
  color: var(--m-ink);
  font-weight: 600;
  font-size: 14px;
}
.m__hero-meta .row em {
  font-style: normal;
  color: var(--m-accent);
}

/* ---- product grid ---- */
.m__section {
  padding: 64px 32px;
}
.m__section-inner { max-width: 1280px; margin: 0 auto; }
.m__section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--m-line);
  margin-bottom: 32px;
}
.m__section-title {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: -0.01em;
  margin: 0;
}
.m__section-sub {
  font-size: 12.5px;
  color: var(--m-ink-faint);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.m__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--m-line);
}
.m__product {
  background: var(--m-surface);
  padding: 0;
  cursor: pointer;
  transition: background 200ms var(--ease-out);
  display: flex;
  flex-direction: column;
}
.m__product:hover { background: var(--m-bg-deep); }
.m__product:hover .m__product-name { color: var(--m-accent); }
.m__product__image {
  aspect-ratio: 4 / 3;
  background: var(--m-bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--m-line);
  position: relative;
  overflow: hidden;
}
.m__product__body {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.m__product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--m-ink-faint);
  text-transform: uppercase;
}
.m__product-name {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--m-ink);
  margin: 0;
  transition: color 160ms;
}
.m__product-spec {
  font-size: 12.5px;
  color: var(--m-ink-soft);
  line-height: 1.6;
  margin: 0;
}
.m__product-price {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px dashed var(--m-line);
}
.m__product-price .jpy {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--m-ink);
}
.m__product-price .btc {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--m-ink-faint);
}
.m__product-tag {
  display: inline-block;
  padding: 4px 8px;
  background: var(--m-tag-bg);
  color: var(--m-ink-soft);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---- product detail ---- */
.m__detail {
  padding: 56px 32px;
  background: var(--m-surface);
}
.m__detail-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}
.m__detail__image {
  aspect-ratio: 1 / 1;
  background: var(--m-bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--m-line);
  position: relative;
  overflow: hidden;
}
.m__detail__info {
  padding: 8px 0;
}
.m__detail-back {
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--m-ink-faint);
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  cursor: pointer;
  margin-bottom: 28px;
  text-transform: uppercase;
}
.m__detail-back:hover { color: var(--m-accent); }
.m__detail__sku {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--m-ink-faint);
  text-transform: uppercase;
}
.m__detail__name {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 16px 0 12px;
}
.m__detail__sub {
  font-size: 14px;
  color: var(--m-ink-soft);
  line-height: 1.9;
  margin: 0 0 24px;
}
.m__detail__specs {
  border-top: 1px solid var(--m-line);
  border-bottom: 1px solid var(--m-line);
  padding: 20px 0;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.m__detail__specs .row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  align-items: baseline;
}
.m__detail__specs .row span:first-child {
  color: var(--m-ink-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.m__detail__price {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--m-line);
  margin-bottom: 28px;
}
.m__detail__price .jpy {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: 40px;
  line-height: 1;
  color: var(--m-ink);
  letter-spacing: -0.02em;
}
.m__detail__price .alt {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--m-ink-faint);
  text-align: right;
  line-height: 1.7;
}
.m__detail__actions { display: flex; flex-direction: column; gap: 12px; }

.m__btn {
  width: 100%;
  padding: 18px 24px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: all 200ms var(--ease-out);
  font-family: inherit;
}
.m__btn--aurora {
  background: var(--aurora-ink);
  color: var(--jbi-paper-warm);
  position: relative;
}
.m__btn--aurora .au-brand__mark {
  width: 20px;
  height: 20px;
}
.m__btn--aurora:hover {
  background: var(--aurora-orange);
  color: #fff;
}
.m__btn--aurora .price-after {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.04em;
}
.m__btn--aurora:hover .price-after { color: rgba(255,255,255,0.85); }
.m__btn--ghost {
  background: transparent;
  color: var(--m-ink);
  border: 1px solid var(--m-line-strong);
}
.m__btn--ghost:hover { background: var(--m-ink); color: var(--m-surface); }

.m__pay-explainer {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 20px;
  padding: 16px;
  background: var(--m-bg-deep);
  border: 1px solid var(--m-line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--m-ink-soft);
}
.m__pay-explainer strong { color: var(--m-ink); }

/* ---- success overlay ---- */
.m__success {
  position: fixed;
  inset: 0;
  background: rgba(244,237,224,0.96);
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  animation: au-fade 280ms ease-out;
}
.m__success__card {
  max-width: 620px;
  background: var(--m-surface);
  border: 1px solid var(--aurora-line);
  padding: 56px 56px 48px;
  text-align: center;
  box-shadow: var(--shadow-3);
}
.m__success__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  background: var(--aurora-live);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.m__success h2 {
  font-family: var(--m-display);
  font-weight: 700;
  font-size: 36px;
  margin: 0 0 12px;
  letter-spacing: -0.015em;
}
.m__success p {
  font-size: 14px;
  color: var(--m-ink-soft);
  line-height: 1.9;
  margin: 0 0 28px;
}
.m__success__details {
  background: var(--m-bg-deep);
  padding: 20px;
  margin-bottom: 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: left;
  border: 1px solid var(--m-line);
}
.m__success__details .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--m-ink-faint);
}
.m__success__details .val {
  font-family: var(--m-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--m-ink);
  margin-top: 4px;
}
.m__success__actions { display: flex; gap: 12px; justify-content: center; }
.m__success__hash {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--m-ink-faint);
  margin: 16px 0 0;
  word-break: break-all;
}

/* Responsive */
@media (max-width: 900px) {
  .m__hero-inner, .m__detail-inner { grid-template-columns: 1fr; gap: 32px; }
  .m__grid { grid-template-columns: 1fr 1fr; }
  .m__nav { display: none; }
  .m__success__details { grid-template-columns: 1fr; }
  .m__success__card { padding: 40px 28px; }
}
@media (max-width: 600px) {
  .m__grid { grid-template-columns: 1fr; }
}