* {
  box-sizing: border-box;
}

:root {
  --bg: #eef1fa;
  --bg-accent1: #dfe7fb;
  --bg-accent2: #fde8f3;
  --surface: #ffffff;
  --text: #1f2333;
  --text-muted: #6b7280;
  --border: #e6e8f0;
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #eef0ff;
  --accent-green: #10b981;
  --accent-green-light: #ecfdf5;
  --accent-amber: #f59e0b;
  --accent-amber-light: #fffbeb;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --shadow: 0 4px 16px rgba(76, 81, 148, 0.08);
  --shadow-hover: 0 8px 24px rgba(76, 81, 148, 0.14);
  --radius: 14px;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", -apple-system, sans-serif;
  background:
    radial-gradient(1200px 500px at 10% -10%, var(--bg-accent1), transparent),
    radial-gradient(1000px 500px at 100% 0%, var(--bg-accent2), transparent),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
}

.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.header-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  border-radius: 14px;
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

header h1 {
  font-size: 26px;
  font-weight: 800;
  margin: 0;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, var(--primary-dark), #7c3aed);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.header-sub {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 720px) {
  .columns {
    grid-template-columns: 1fr;
  }
  header h1 {
    font-size: 22px;
  }
}

.panel {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.panel h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 0;
  font-size: 17px;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.panel h2.summary-heading {
  margin-top: 24px;
}

.panel-icon {
  font-size: 18px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.field input,
.field select {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  background: #fafbff;
  color: var(--text);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
}

.row2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.hint {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 4px;
}

.field input.from-master {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-dark);
  font-weight: 700;
}

.cp-hint {
  color: var(--primary-dark);
}

.err {
  font-size: 11.5px;
  color: var(--danger);
  margin-top: 4px;
  display: none;
}

.field.invalid input,
.field.invalid select {
  border-color: var(--danger);
  background: var(--danger-light);
}

.field.invalid .err {
  display: block;
}

.radio-group {
  display: flex;
  gap: 10px;
}

.radio-opt {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  text-align: center;
  cursor: pointer;
  font-weight: 700;
  font-size: 13.5px;
  user-select: none;
  background: #fafbff;
  transition: 0.15s ease;
  line-height: 1.4;
}

.radio-opt .radio-en {
  font-weight: 500;
  font-size: 11px;
  color: var(--text-muted);
}

.radio-opt input {
  display: none;
}

.radio-opt.lend.active {
  background: var(--accent-green-light);
  border-color: var(--accent-green);
  color: #047857;
}

.radio-opt.borrow.active {
  background: var(--accent-amber-light);
  border-color: var(--accent-amber);
  color: #b45309;
}

.banner {
  display: none;
  background: var(--danger-light);
  color: var(--danger);
  border: 1px solid var(--danger);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  font-weight: 700;
}

.banner.show {
  display: block;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 480px) {
  .result-grid {
    grid-template-columns: 1fr;
  }
}

.result-box {
  background: var(--primary-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.result-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.result-value {
  font-size: 21px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: 0.02em;
  word-break: break-word;
}

.meta {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.confirm-actions {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.btn-confirm,
.btn-cancel {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.15s ease;
}

.btn-confirm {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-confirm:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.btn-confirm:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-cancel {
  background: #f1f2f6;
  color: var(--text-muted);
}

.btn-cancel:hover {
  background: #e5e7f0;
}

.save-banner {
  display: none;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  font-weight: 700;
}

.save-banner.show {
  display: block;
}

.save-banner.success {
  background: var(--accent-green-light);
  color: #047857;
  border: 1px solid var(--accent-green);
}

.save-banner.error {
  background: var(--danger-light);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.footnote {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 28px;
}

.history-link-wrap {
  display: flex;
  justify-content: flex-end;
  margin-top: 16px;
}

.btn-history,
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn-history:hover,
.btn-back:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
  color: #fff;
}

.history-header-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 16px;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

table.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background: var(--surface);
  white-space: nowrap;
}

table.history-table th,
table.history-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

table.history-table th {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  position: sticky;
  top: 0;
}

table.history-table th .sort-indicator {
  margin-left: 4px;
  opacity: 0.5;
  font-size: 11px;
}

table.history-table th.sorted .sort-indicator {
  opacity: 1;
}

table.history-table tbody tr:nth-child(even) {
  background: #fafbff;
}

table.history-table tbody tr:hover {
  background: var(--primary-light);
}

table.history-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.history-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  padding: 40px 0;
}