/* ==========================================================================
   SPUMOTE MART — デモ EC サイトのスタイル
   依存ゼロ / 外部 CDN・外部フォント禁止（GCS 静的ホスティングで完全自己完結）
   ========================================================================== */

:root {
  --mart-green: #0f7a5a;
  --mart-green-dark: #0a5b43;
  --mart-green-soft: #e6f4ef;
  --mart-ice: #1f7a99;
  --mart-ice-soft: #e8f3f7;
  --mart-accent: #e2683c;
  --mart-ink: #1c2b26;
  --mart-ink-soft: #5b6b65;
  --mart-line: #dfe6e3;
  --mart-bg: #f6f8f7;
  --mart-card: #ffffff;
  --mart-radius: 14px;
  --mart-shadow:
    0 1px 2px rgba(16, 40, 32, 0.06), 0 8px 24px rgba(16, 40, 32, 0.06);
  --mart-font:
    system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Hiragino Sans",
    "Yu Gothic UI", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--mart-font);
  color: var(--mart-ink);
  background: var(--mart-bg);
  line-height: 1.7;
  font-size: 15px;
}

a {
  color: inherit;
}

img,
svg {
  max-width: 100%;
}

.container {
  width: min(1080px, 100% - 32px);
  margin-inline: auto;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--mart-card);
  border-bottom: 1px solid var(--mart-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--mart-green), var(--mart-ice));
  color: #fff;
  font-size: 18px;
}

.logo-text {
  font-size: 18px;
  color: var(--mart-green-dark);
}

.logo-text em {
  font-style: normal;
  color: var(--mart-accent);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  position: relative;
  padding: 8px 12px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--mart-ink-soft);
}

.site-nav a:hover {
  background: var(--mart-green-soft);
  color: var(--mart-green-dark);
}

.site-nav a[aria-current="page"] {
  background: var(--mart-green-soft);
  color: var(--mart-green-dark);
}

.cart-badge {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  margin-left: 6px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--mart-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
}

.cart-badge[hidden] {
  display: none;
}

/* ---------- 汎用 ---------- */
main {
  padding: 28px 0 56px;
}

.page-title {
  margin: 0 0 4px;
  font-size: 24px;
  letter-spacing: 0.02em;
}

.page-lead {
  margin: 0 0 24px;
  color: var(--mart-ink-soft);
  font-size: 14px;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 40px 0 16px;
}

.section-head h2 {
  margin: 0;
  font-size: 19px;
}

.section-head a {
  font-size: 13px;
  font-weight: 600;
  color: var(--mart-green);
  text-decoration: none;
}

.section-head a:hover {
  text-decoration: underline;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 9px 16px;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: var(--mart-green);
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
  transition:
    background 0.15s ease,
    transform 0.05s ease;
}

.btn:hover {
  background: var(--mart-green-dark);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  background: #b7c4bf;
  cursor: not-allowed;
}

.btn-lg {
  width: 100%;
  padding: 13px 20px;
  font-size: 15px;
}

.btn-ghost {
  background: transparent;
  color: var(--mart-green-dark);
  border: 1px solid var(--mart-line);
}

.btn-ghost:hover {
  background: var(--mart-green-soft);
}

.link-btn {
  appearance: none;
  border: 0;
  background: none;
  padding: 4px;
  font: inherit;
  font-size: 12px;
  color: var(--mart-ink-soft);
  text-decoration: underline;
  cursor: pointer;
}

.link-btn:hover {
  color: var(--mart-accent);
}

/* ---------- ヒーロー ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: center;
  padding: 32px;
  border-radius: 22px;
  background: linear-gradient(135deg, #0f7a5a 0%, #14907a 55%, #1f7a99 100%);
  color: #fff;
  box-shadow: var(--mart-shadow);
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 30px;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.hero p {
  margin: 0 0 20px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.hero-badges span {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 12px;
  font-weight: 600;
}

.hero .btn {
  background: #fff;
  color: var(--mart-green-dark);
}

.hero .btn:hover {
  background: #eafaf3;
}

.hero-art {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  width: min(100%, 300px);
  margin-inline: auto;
}

.hero-art span {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 54px;
}

/* ---------- 商品グリッド ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--mart-card);
  border: 1px solid var(--mart-line);
  border-radius: var(--mart-radius);
  overflow: hidden;
  transition:
    box-shadow 0.15s ease,
    border-color 0.15s ease;
}

.product-card:hover {
  /* transform で浮かせると、カード端でカーソルが hover 領域を出入りして
     振動するので、影の強調だけにする ( 当たり判定を動かさない ) */
  box-shadow: var(--mart-shadow);
  border-color: var(--mart-green);
}

.product-thumb {
  display: grid;
  place-items: center;
  height: 132px;
  font-size: 46px;
  position: relative;
}

.product-thumb::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--mart-line);
}

.thumb-a {
  background: linear-gradient(140deg, #dff3e6, #b8e6cd);
}
.thumb-b {
  background: linear-gradient(140deg, #dceff7, #b7dcee);
}
.thumb-c {
  background: linear-gradient(140deg, #fdeade, #f8cfae);
}
.thumb-d {
  background: linear-gradient(140deg, #f2e7fb, #d9c8f3);
}
.thumb-e {
  background: linear-gradient(140deg, #fdf0d8, #f7dda2);
}
.thumb-f {
  background: linear-gradient(140deg, #e3f0fb, #c2dbf3);
}
.thumb-g {
  background: linear-gradient(140deg, #fce8ec, #f6c6d1);
}
.thumb-h {
  background: linear-gradient(140deg, #e9f5dd, #cbe8ab);
}

.product-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 14px 16px 16px;
}

.product-cat {
  margin: 0 0 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--mart-ice);
}

.product-name {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.5;
}

.product-desc {
  margin: 0 0 14px;
  font-size: 12.5px;
  color: var(--mart-ink-soft);
  flex: 1;
}

.product-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.product-price {
  font-size: 17px;
  font-weight: 700;
  color: var(--mart-ink);
}

.product-sku {
  display: block;
  font-size: 11px;
  color: #9aa8a3;
  letter-spacing: 0.04em;
}

/* ---------- カート ---------- */
.cart-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}

.panel {
  background: var(--mart-card);
  border: 1px solid var(--mart-line);
  border-radius: var(--mart-radius);
  padding: 20px;
}

.panel h2 {
  margin: 0 0 14px;
  font-size: 16px;
}

.cart-table {
  width: 100%;
  border-collapse: collapse;
}

.cart-table thead th {
  padding: 0 8px 10px;
  font-size: 12px;
  color: var(--mart-ink-soft);
  text-align: left;
  border-bottom: 1px solid var(--mart-line);
  font-weight: 600;
}

.cart-table thead th:not(:first-child) {
  text-align: right;
}

.cart-table td {
  padding: 14px 8px;
  border-bottom: 1px solid var(--mart-line);
  vertical-align: middle;
}

.cart-col-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cart-thumb {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--mart-ice-soft);
  font-size: 22px;
  flex: none;
}

.cart-name {
  font-weight: 600;
  font-size: 14px;
}

.cart-sku {
  display: block;
  font-size: 11px;
  color: #9aa8a3;
  letter-spacing: 0.04em;
}

.cart-price,
.cart-sub {
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.cart-sub {
  font-weight: 700;
}

.cart-qty {
  text-align: right;
  white-space: nowrap;
}

.qty-box {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--mart-line);
  border-radius: 999px;
  padding: 2px;
}

.qty-btn {
  appearance: none;
  width: 26px;
  height: 26px;
  border: 0;
  border-radius: 999px;
  background: var(--mart-green-soft);
  color: var(--mart-green-dark);
  font: inherit;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
}

.qty-btn:hover {
  background: #cfe9df;
}

.js-item-qty {
  display: inline-block;
  min-width: 28px;
  text-align: center;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.cart-remove {
  text-align: right;
}

.cart-empty {
  padding: 36px 8px;
  text-align: center;
  color: var(--mart-ink-soft);
}

.cart-empty .btn {
  margin-top: 12px;
}

.summary-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 14px;
  color: var(--mart-ink-soft);
}

.summary-total {
  border-top: 1px solid var(--mart-line);
  margin-top: 10px;
  padding-top: 14px;
  font-size: 15px;
  color: var(--mart-ink);
  font-weight: 700;
}

.summary-total strong {
  font-size: 22px;
  font-variant-numeric: tabular-nums;
}

.summary-note {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--mart-ink-soft);
}

/* ---------- 識別フォーム ---------- */
.field {
  margin-bottom: 12px;
}

.field label {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--mart-ink-soft);
}

.field input {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--mart-line);
  border-radius: 10px;
  font: inherit;
  font-size: 14px;
  background: #fff;
  color: inherit;
}

.field input:focus {
  outline: 2px solid rgba(15, 122, 90, 0.35);
  outline-offset: 1px;
  border-color: var(--mart-green);
}

.identified {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--mart-green-soft);
  color: var(--mart-green-dark);
  font-size: 13px;
  font-weight: 600;
}

.identified[hidden] {
  display: none;
}

/* ---------- 購入完了 ---------- */
.complete-card {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
}

.complete-mark {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 999px;
  background: var(--mart-green-soft);
  color: var(--mart-green);
  font-size: 30px;
}

.order-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
  margin: 16px 0 20px;
  padding: 16px;
  border-radius: 12px;
  background: var(--mart-bg);
}

.order-meta div {
  text-align: center;
}

.order-meta dt {
  font-size: 11px;
  color: var(--mart-ink-soft);
  font-weight: 600;
}

.order-meta dd {
  margin: 2px 0 0;
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.order-items {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  text-align: left;
}

.order-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--mart-line);
  font-size: 14px;
}

.order-item:last-child {
  border-bottom: 0;
}

.order-items + .btn {
  margin-top: 8px;
}

.order-item .js-item-name {
  flex: 1;
}

.order-item .js-item-price {
  font-variant-numeric: tabular-nums;
  color: var(--mart-ink-soft);
}

.empty-note {
  color: var(--mart-ink-soft);
  font-size: 14px;
}

/* ---------- フッター ---------- */
.site-footer {
  border-top: 1px solid var(--mart-line);
  background: var(--mart-card);
  padding: 24px 0 32px;
}

.footer-note {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--mart-ink-soft);
}

.copyright {
  margin: 16px 0 0;
  font-size: 11px;
  color: #9aa8a3;
}

/* ---------- デモ設定パネル ---------- */
.demo-panel {
  border: 1px dashed var(--mart-line);
  border-radius: 12px;
  background: var(--mart-bg);
  padding: 10px 14px;
}

.demo-panel > summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  color: var(--mart-ink-soft);
  list-style: none;
}

.demo-panel > summary::before {
  content: "⚙ ";
}

.demo-panel[open] > summary {
  margin-bottom: 12px;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  align-items: end;
}

.demo-grid .field {
  margin: 0;
}

.demo-status {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--mart-ink-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
}

.demo-log {
  margin-top: 14px;
}

.demo-log h4 {
  margin: 0 0 6px;
  font-size: 12px;
  color: var(--mart-ink-soft);
}

.event-log {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.event-log li {
  display: flex;
  gap: 10px;
  padding: 4px 0;
  border-bottom: 1px dotted var(--mart-line);
  color: var(--mart-ink-soft);
}

.event-log li:last-child {
  border-bottom: 0;
}

.event-log .ev-time {
  color: #9aa8a3;
  flex: none;
}

.event-log .ev-name {
  font-weight: 700;
  color: var(--mart-green-dark);
  flex: none;
}

.event-log .ev-detail {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- トースト ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 12px);
  z-index: 50;
  padding: 11px 20px;
  border-radius: 999px;
  background: var(--mart-ink);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .cart-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-nav a {
    padding: 8px 9px;
    font-size: 13px;
  }

  .logo-text {
    font-size: 16px;
  }

  .cart-table thead {
    display: none;
  }

  .cart-table tr {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4px 10px;
    padding: 12px 0;
    border-bottom: 1px solid var(--mart-line);
  }

  .cart-table td {
    border: 0;
    padding: 0;
  }

  .cart-col-item {
    grid-column: 1 / -1;
  }

  .cart-price {
    text-align: left;
    font-size: 13px;
    color: var(--mart-ink-soft);
  }

  .order-meta {
    gap: 12px;
  }
}

/* ---------- ユーティリティ ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}