:root {
  --bg: #eef3f7;
  --panel: #ffffff;
  --line: #d4dce5;
  --text: #17202a;
  --muted: #607182;
  --primary: #0f5ea8;
  --primary-hover: #0b4b86;
  --ghost-bg: #dde7f2;
  --ghost-text: #22425f;
  --danger-bg: #fff2f2;
  --danger-text: #b42318;
  --success-bg: #ecfdf3;
  --success-text: #027a48;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Yu Gothic UI", "Meiryo", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(15, 94, 168, 0.08), transparent 26%),
    linear-gradient(180deg, #f8fbfd 0%, var(--bg) 100%);
  color: var(--text);
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.page-wide {
  max-width: 1440px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.lead {
  margin: 10px 0 0;
  color: var(--muted);
}

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.auth-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.auth-user {
  color: var(--muted);
  font-weight: 700;
}

.nav-link,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 110px;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}

.nav-link {
  background: #fff;
  color: var(--primary);
  border: 1px solid rgba(15, 94, 168, 0.16);
}

.nav-link.is-current,
.button-link {
  background: var(--primary);
  color: #fff;
  border: none;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(212, 220, 229, 0.9);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 14px;
}

.toolbar-between {
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.search-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.search-form input {
  width: min(420px, 100%);
}

.search-form button {
  min-width: 96px;
}

.master-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.master-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.master-actions input {
  width: min(320px, 100%);
}

select {
  width: 100%;
  height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.95rem;
  color: var(--text);
  background: #fff;
}

.message-box {
  display: none;
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-line;
}

.message-box.is-error {
  display: block;
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid rgba(180, 35, 24, 0.16);
}

.message-box.is-success {
  display: block;
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid rgba(2, 122, 72, 0.16);
}

.setup-guide {
  margin-bottom: 16px;
  padding: 16px 18px;
  border: 1px solid rgba(15, 94, 168, 0.16);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(15, 94, 168, 0.04), rgba(15, 94, 168, 0.01)),
    #f8fbff;
}

.setup-guide__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.setup-guide__header h2 {
  margin: 0;
  font-size: 1rem;
}

.setup-guide__lead {
  margin: 10px 0 0;
  color: var(--muted);
}

.setup-guide__list {
  margin: 12px 0 0;
  padding-left: 20px;
}

.setup-guide__list li + li {
  margin-top: 8px;
}

.list-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.list-summary__text {
  margin: 0;
}

.page-size-field {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}

.page-size-field select {
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}

.grid-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.stack-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.two-column-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 20px;
}

.section-title {
  margin: 0 0 14px;
  color: var(--primary);
  font-size: 1rem;
}

.form-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px;
  border: 1px solid #e3eaf1;
  border-radius: 16px;
  background: #fbfdff;
}

.form-section__title {
  margin: 0;
  font-size: 1rem;
  color: var(--primary);
}

.master-field-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.checkbox-field label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.checkbox-field input {
  width: auto;
  height: auto;
}

label {
  font-size: 0.94rem;
  font-weight: 700;
}

small {
  color: var(--muted);
  font-size: 0.8rem;
}

input {
  width: 100%;
  height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.95rem;
  color: var(--text);
  background: #fff;
}

input[readonly] {
  background: #f6f8fb;
}

input:focus {
  outline: 2px solid rgba(15, 94, 168, 0.16);
  border-color: var(--primary);
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 8px;
}

button {
  min-width: 120px;
  height: 44px;
  padding: 0 18px;
  border: none;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

button.ghost {
  background: var(--ghost-bg);
  color: var(--ghost-text);
}

.small-button {
  min-width: 0;
  height: 36px;
  padding: 0 14px;
  font-size: 0.85rem;
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1180px;
}

.data-table th,
.data-table td {
  padding: 12px 10px;
  border-bottom: 1px solid #e6edf4;
  text-align: left;
  vertical-align: middle;
  font-size: 0.92rem;
}

.data-table th {
  background: #f5f8fb;
  font-weight: 700;
  white-space: nowrap;
}

.cell-number {
  text-align: right;
  white-space: nowrap;
}

.cell-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  white-space: nowrap;
}

.table-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

.table-delete {
  min-width: 0;
  height: auto;
  padding: 8px 12px;
  background: #f04438;
}

.empty-state {
  margin: 16px 0 0;
  color: var(--muted);
}

.pagination {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
}

.pagination__status {
  min-width: 120px;
  text-align: center;
  color: var(--muted);
  font-weight: 700;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
  margin: 0;
}

.detail-row {
  padding: 14px;
  border: 1px solid #e3eaf1;
  border-radius: 12px;
  background: #fbfdff;
}

.detail-row dt {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.detail-row dd {
  margin: 0;
  font-size: 1rem;
}

.lookup-popup {
  position: absolute;
  z-index: 20;
  background: #fff;
  border: 1px solid #d8e2ec;
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
  overflow: hidden;
}

.lookup-popup__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px 8px;
  border-bottom: 1px solid #edf2f7;
}

.lookup-popup__close {
  min-width: 36px;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
}

.lookup-popup__hint {
  padding: 0 14px 10px;
  color: var(--muted);
  font-size: 0.85rem;
}

.lookup-popup__table-wrap {
  max-height: 280px;
  overflow: auto;
}

.lookup-popup__table {
  width: 100%;
  border-collapse: collapse;
}

.lookup-popup__table th,
.lookup-popup__table td {
  padding: 10px 12px;
  border-top: 1px solid #edf2f7;
  text-align: left;
  white-space: nowrap;
  font-size: 0.9rem;
}

.lookup-popup__table th {
  position: sticky;
  top: 0;
  background: #f8fbfd;
}

.lookup-popup__row {
  cursor: pointer;
}

.lookup-popup__row:hover {
  background: #f3f8fc;
}

.lookup-popup__empty {
  color: var(--muted);
}

.invoice-form {
  margin-bottom: 18px;
}

.invoice-radio-label {
  font-size: 0.94rem;
  font-weight: 700;
}

.invoice-radio-group {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.invoice-radio-group label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
}

.invoice-radio-group input {
  width: auto;
  height: auto;
  margin: 0;
}

.invoice-preview {
  border: 1px solid #d9e4ee;
  border-radius: 18px;
  padding: 20px;
  background:
    linear-gradient(180deg, rgba(15, 94, 168, 0.04), rgba(15, 94, 168, 0.01)),
    #ffffff;
}

.invoice-preview__header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.invoice-preview__actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.invoice-preview__badge {
  padding: 8px 12px;
  border-radius: 999px;
  background: #eff6ff;
  color: var(--primary);
  font-weight: 700;
}

.invoice-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
  margin-bottom: 18px;
}

.invoice-table {
  min-width: 980px;
}

.invoice-nontaxable {
  color: #0b6b4b;
  font-weight: 700;
}

.invoice-totals {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px 18px;
  margin-top: 18px;
}

.invoice-note {
  margin: 16px 0 0;
  color: var(--muted);
}

.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: min(460px, 100%);
  background: var(--panel);
  border: 1px solid rgba(212, 220, 229, 0.9);
  border-radius: 20px;
  padding: 26px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.auth-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

@media print {
  body {
    background: #fff;
  }

  .app-shell,
  #messageBox,
  #invoiceForm {
    display: none !important;
  }

  .page,
  .page-wide {
    max-width: none;
    margin: 0;
    padding: 0;
  }

  .panel {
    border: none;
    box-shadow: none;
    padding: 0;
  }

  .invoice-preview {
    border: none;
    border-radius: 0;
    padding: 0;
    background: #fff;
  }

  .invoice-preview__badge,
  #invoicePdfButton {
    display: none !important;
  }

  .invoice-table {
    min-width: 0;
  }
}

@media (max-width: 960px) {
  .page-header {
    flex-direction: column;
  }
}

@media (max-width: 680px) {
  .page {
    padding: 20px 14px 32px;
  }

  .panel {
    padding: 18px;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .two-column-grid {
    grid-template-columns: 1fr;
  }

  .invoice-summary-grid,
  .invoice-totals {
    grid-template-columns: 1fr;
  }

  .actions,
  .page-nav,
  .pagination,
  .search-form,
  .master-actions {
    flex-direction: column;
  }

  button,
  .nav-link,
  .button-link,
  .search-form input,
  .master-actions input,
  .page-size-field,
  .page-size-field select {
    width: 100%;
  }
}