:root {
  --color-bg: #fffaf8;
  --color-panel: #ffffff;
  --color-soft: #f8efe9;
  --color-mint: #dcefe7;
  --color-accent: #b8895b;
  --color-text: #4a3c3a;
  --color-muted: #756764;
  --color-line: #06c755;
  --shadow: 0 16px 36px rgba(102, 75, 60, 0.12);
  --radius: 8px;
  --max: 1120px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem max(1rem, calc((100vw - var(--max)) / 2));
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid #eadbd2;
}
.brand { display: flex; gap: 0.75rem; align-items: center; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-mint);
  color: #42665a;
  font-weight: 700;
  font-size: 0.78rem;
}
.brand small { display: block; color: var(--color-muted); font-size: 0.8rem; }
.site-nav { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.site-nav a {
  text-decoration: none;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius);
  background: var(--color-soft);
  font-weight: 600;
  font-size: 0.92rem;
}
.badge { display: inline-block; min-width: 1.4em; text-align: center; border-radius: 99px; background: var(--color-accent); color: #fff; }
main { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 2rem;
  align-items: end;
  padding: 3rem 0 2rem;
}
.hero h1 { margin: 0; font-size: clamp(2rem, 5vw, 4rem); line-height: 1.15; letter-spacing: 0; }
.hero p { color: var(--color-muted); }
.eyebrow { color: var(--color-accent); font-weight: 700; letter-spacing: 0; }
.hero__panel, .note-box, .admin-panel, .login-card {
  background: var(--color-panel);
  border: 1px solid #eadbd2;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.hero__actions, .action-row, .admin-actions { display: flex; gap: 0.7rem; flex-wrap: wrap; align-items: center; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  font-weight: 700;
}
.button:disabled { opacity: 0.65; cursor: progress; }
.button-primary { background: var(--color-accent); color: #fff; }
.button-secondary { background: var(--color-soft); color: var(--color-text); border-color: #eadbd2; }
.button-line { background: var(--color-line); color: #fff; }
.button-small { min-height: 34px; padding: 0.35rem 0.65rem; font-size: 0.86rem; background: var(--color-soft); }

.section { padding: 2rem 0; }
.section-head { display: flex; justify-content: space-between; gap: 1rem; align-items: end; margin-bottom: 1rem; }
.section-head h2, .section h1, .section h2 { margin: 0; letter-spacing: 0; }
.section-head p { margin: 0; color: var(--color-muted); }
.filter-bar, .form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  align-items: end;
}
.filter-bar.compact { grid-template-columns: minmax(220px, 320px) auto; }
label { display: grid; gap: 0.35rem; font-weight: 600; }
label span { color: var(--color-muted); font-size: 0.9rem; }
input, select, textarea {
  width: 100%;
  border: 1px solid #d9c8be;
  border-radius: var(--radius);
  background: #fff;
  padding: 0.7rem 0.8rem;
}
.full { grid-column: 1 / -1; }
.check, .check-row label { display: flex; align-items: center; gap: 0.45rem; }
.check input, .check-row input { width: auto; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}
.product-card {
  display: grid;
  background: #fff;
  border: 1px solid #eadbd2;
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 0;
}
.product-card__image {
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #f8efe9, #e2f0ea);
  color: var(--color-muted);
  text-decoration: none;
}
.product-card__image img { width: 100%; height: 100%; object-fit: cover; }
.product-card__body { display: grid; gap: 0.55rem; padding: 0.9rem; }
.product-card h3 { margin: 0; font-size: 1rem; line-height: 1.45; min-height: 4.35em; overflow: hidden; }
.product-card h3 a { text-decoration: none; }
.product-card__meta { margin: 0; color: var(--color-muted); font-size: 0.82rem; }
.price { margin: 0; font-weight: 800; color: #8a5e3d; }
.card-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.card-tags span { padding: 0.2rem 0.45rem; border-radius: 999px; background: var(--color-mint); color: #3e6658; font-size: 0.78rem; font-weight: 700; }
.inline-form { margin: 0; }

.product-detail { display: grid; grid-template-columns: minmax(280px, 0.85fr) 1fr; gap: 2rem; padding: 2rem 0; }
.product-gallery img, .image-placeholder { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-radius: var(--radius); background: var(--color-soft); display: grid; place-items: center; }
.product-info h1 { font-size: clamp(1.8rem, 4vw, 3rem); margin: 0; line-height: 1.2; }
.lead { color: var(--color-muted); }
.product-fields dl, .confirm-list { display: grid; grid-template-columns: 150px 1fr; gap: 0.5rem 1rem; }
.product-fields dt, .confirm-list dt { color: var(--color-muted); font-weight: 700; }
.product-fields dd, .confirm-list dd { margin: 0; }
.text-block { border-top: 1px solid #eadbd2; padding-top: 1rem; margin-top: 1rem; }

.data-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; }
.data-table th, .data-table td { padding: 0.75rem; border-bottom: 1px solid #eadbd2; text-align: left; vertical-align: top; }
.data-table th { background: var(--color-soft); white-space: nowrap; }
.qty-input { max-width: 92px; }
.customer-form, .request-list-form, .admin-form { display: grid; gap: 1rem; margin-top: 1.5rem; }
.two-column, .split { display: grid; grid-template-columns: 1fr 0.85fr; gap: 1.5rem; }
.alert { padding: 0.8rem 1rem; border-radius: var(--radius); margin: 1rem 0; }
.alert-success { background: #e7f5ec; color: #27653f; }
.alert-error { background: #fde9e3; color: #8f3d2a; }
.empty { color: var(--color-muted); background: #fff; border: 1px dashed #d9c8be; padding: 1rem; border-radius: var(--radius); }
.site-footer {
  margin-top: 3rem;
  padding: 2rem max(1rem, calc((100vw - var(--max)) / 2));
  background: #fff;
  border-top: 1px solid #eadbd2;
  color: var(--color-muted);
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1rem; }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.login-card { width: min(420px, 100%); display: grid; gap: 1rem; }
.admin-body { display: grid; grid-template-columns: 240px minmax(0, 1fr); min-height: 100vh; }
.admin-sidebar { background: #fff; border-right: 1px solid #eadbd2; padding: 1rem; position: sticky; top: 0; height: 100vh; }
.admin-sidebar nav { display: grid; gap: 0.35rem; margin-top: 1rem; }
.admin-sidebar a { text-decoration: none; padding: 0.55rem 0.65rem; border-radius: var(--radius); }
.admin-sidebar a:hover { background: var(--color-soft); }
.admin-main { width: auto; max-width: none; padding: 1.25rem; overflow-x: auto; }
.admin-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.stat-card { background: #fff; border: 1px solid #eadbd2; border-radius: var(--radius); padding: 1rem; }
.stat-card strong { display: block; font-size: 2rem; color: var(--color-accent); }
.media-grid { display: grid; grid-template-columns: repeat(4, 120px); gap: 0.75rem; }
.media-grid figure { margin: 0; }
.media-grid img { width: 120px; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius); }

@media (max-width: 900px) {
  .hero, .product-detail, .two-column, .split { grid-template-columns: 1fr; }
  .filter-bar, .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .admin-body { grid-template-columns: 1fr; }
  .admin-sidebar { position: static; height: auto; }
  .admin-sidebar nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .site-header { display: grid; }
  .site-nav { justify-content: start; }
  main { width: min(100% - 1rem, var(--max)); }
  .hero { padding-top: 1.5rem; }
  .hero h1 { font-size: 2.15rem; }
  .filter-bar, .form-grid, .filter-bar.compact { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.6rem; }
  .product-card__body { padding: 0.7rem; }
  .product-card h3 { font-size: 0.92rem; }
  .button { width: 100%; }
  .data-table { display: block; overflow-x: auto; white-space: nowrap; }
  .product-fields dl, .confirm-list { grid-template-columns: 1fr; }
  .admin-sidebar nav { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
}