:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f6f8f7;
  --color-border: #dfe5e2;
  --color-text: #1f2a26;
  --color-text-muted: #5b6a63;
  --color-accent: #2f9e63;
  --color-accent-dark: #24804f;
  --color-accent-soft: #e6f5ee;
  --color-danger: #c0392b;
  --color-danger-soft: #fbeae7;
  --color-warning: #b8860b;
  --color-warning-soft: #fff6e0;
  --radius-md: 8px;
  --radius-lg: 14px;
  --shadow-md: 0 4px 16px rgba(31, 42, 38, 0.12);
  --font-base: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Segoe UI", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.hidden {
  display: none !important;
}

a {
  color: var(--color-accent-dark);
}

h1, h2, h3 {
  line-height: 1.4;
}

/* ===== Header ===== */
.site-header {
  background: var(--color-accent-soft);
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-accent-dark);
}

.pro-badge {
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.catch {
  max-width: 960px;
  margin: 8px auto 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== Layout ===== */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.zone {
  margin-bottom: 32px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: opacity 0.15s ease;
}

.btn:hover {
  opacity: 0.85;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-secondary {
  background: var(--color-bg-soft);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

.btn-danger {
  background: var(--color-danger-soft);
  color: var(--color-danger);
  border-color: var(--color-danger);
}

.btn-small {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-text);
}

.icon-btn:hover {
  background: var(--color-bg-soft);
}

/* ===== Drop zone ===== */
.drop-zone {
  border: 2px dashed var(--color-accent);
  border-radius: var(--radius-lg);
  background: var(--color-accent-soft);
  padding: 48px 20px;
  text-align: center;
  cursor: pointer;
}

.drop-zone.drag-over {
  background: #d3ecdf;
}

.drop-zone .drop-icon {
  font-size: 2.5rem;
  margin: 0 0 8px;
}

.drop-zone p {
  margin: 4px 0;
}

.file-select-label {
  margin-top: 8px;
}

.safe-note {
  margin-top: 16px;
  color: var(--color-accent-dark);
  font-size: 0.9rem;
  font-weight: 600;
}

.error-text {
  color: var(--color-danger);
  background: var(--color-danger-soft);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  margin-top: 12px;
}

.warning-text {
  color: var(--color-warning);
  background: var(--color-warning-soft);
  border-radius: var(--radius-md);
  padding: 10px 14px;
}

.note-text {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ===== Mapping zone ===== */
.banner {
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.mapping-controls {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.amount-mode-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  font-size: 0.92rem;
}

.checkbox-label, .radio-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  cursor: pointer;
}

.select-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
}

select, input[type="text"] {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--color-text);
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.data-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 480px;
  font-size: 0.85rem;
}

.data-table th, .data-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 8px 10px;
  text-align: left;
  white-space: nowrap;
}

.data-table thead th {
  background: var(--color-bg-soft);
  position: sticky;
  top: 0;
}

.data-table tbody tr:hover {
  background: var(--color-bg-soft);
}

.data-table tr.row-error {
  background: var(--color-danger-soft);
}

.format-fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 16px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.format-fieldset legend {
  font-weight: 600;
  padding: 0 6px;
}

.action-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.inline-save {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.result-summary {
  font-weight: 600;
  margin-bottom: 4px;
}

/* ===== Pro promo ===== */
.promo-zone {
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.promo-zone p {
  margin: 4px 0;
}

.promo-price {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-accent-dark);
}

/* ===== SEO zone ===== */
.seo-zone {
  border-top: 1px solid var(--color-border);
  padding-top: 32px;
  margin-top: 32px;
  color: var(--color-text-muted);
}

.seo-zone h2 {
  color: var(--color-text);
  font-size: 1.15rem;
  margin-top: 32px;
}

.faq-list dt {
  font-weight: 700;
  color: var(--color-text);
  margin-top: 14px;
}

.faq-list dd {
  margin-left: 0;
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 24px 20px 40px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-link {
  color: var(--color-text-muted);
  text-decoration: underline;
}

.copyright {
  margin-top: 8px;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(31, 42, 38, 0.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  overflow-y: auto;
  z-index: 100;
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 620px;
  max-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-section {
  margin-bottom: 28px;
}

.modal-section h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.inline-form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.form-message {
  margin-top: 8px;
  font-size: 0.88rem;
}

.form-message.success {
  color: var(--color-accent-dark);
}

.form-message.error {
  color: var(--color-danger);
}

.pro-active-text {
  color: var(--color-accent-dark);
  font-weight: 600;
}

.item-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.item-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.empty-text {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.lock-text {
  color: var(--color-text-muted);
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 0.9rem;
}

.rules-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 10px;
}

.rules-table th, .rules-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 6px;
  text-align: left;
}

.rules-table input[type="text"] {
  width: 100%;
}

.legal-list dt {
  font-weight: 700;
  margin-top: 12px;
}

.legal-list dd {
  margin-left: 0;
  color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 8px;
  }

  .action-row {
    flex-direction: column;
    align-items: stretch;
  }

  .action-row .btn {
    width: 100%;
  }

  .inline-save {
    width: 100%;
  }

  .inline-save input[type="text"] {
    flex: 1;
  }
}