* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Meiryo', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.section {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.full-width {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #e5e7eb;
}

.section-header h2 {
  font-size: 20px;
  font-weight: bold;
  color: #333;
}

/* テーブルスタイル */
.customer-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.customer-table thead {
  background: #f9fafb;
}

.customer-table th {
  padding: 12px;
  text-align: left;
  font-weight: bold;
  color: #333;
  border-bottom: 2px solid #e5e7eb;
  font-size: 14px;
}

.customer-table td {
  padding: 12px;
  border-bottom: 1px solid #e5e7eb;
  font-size: 14px;
}

.customer-table tbody tr {
  cursor: pointer;
  transition: background-color 0.2s;
}

.customer-table tbody tr:hover {
  background-color: #f9fafb;
}

.customer-table .name-cell {
  font-weight: 600;
  color: #333;
}

.customer-table .contact-cell {
  color: #6b7280;
  font-size: 13px;
}

.customer-table .ticket-cell {
  text-align: center;
}

.customer-table .action-cell {
  text-align: center;
}

.ticket-badge {
  display: inline-block;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: bold;
  font-size: 16px;
}

.detail-card {
  background: #f9fafb;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.detail-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.info-item {
  display: flex;
  flex-direction: column;
}

.info-label {
  font-size: 12px;
  color: #6b7280;
  margin-bottom: 4px;
}

.info-value {
  font-size: 16px;
  color: #333;
  font-weight: 500;
}

.ticket-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.history-section {
  margin-top: 24px;
}

.history-section h3 {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 16px;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-item {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.history-info {
  flex: 1;
}

.history-date {
  font-size: 12px;
  color: #6b7280;
  margin-bottom: 4px;
}

.history-change {
  font-size: 16px;
  font-weight: bold;
}

.history-change.positive {
  color: #10b981;
}

.history-change.negative {
  color: #ef4444;
}

.history-note {
  font-size: 14px;
  color: #6b7280;
  margin-top: 4px;
}

.history-count {
  font-size: 14px;
  color: #6b7280;
  text-align: right;
}

/* ボタン */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
  background: #6b7280;
  color: white;
}

.btn-secondary:hover {
  background: #4b5563;
}

.btn-success {
  background: #10b981;
  color: white;
}

.btn-success:hover {
  background: #059669;
}

.btn-danger {
  background: #ef4444;
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-text {
  background: transparent;
  color: #6b7280;
  padding: 4px;
}

.btn-text:hover {
  color: #333;
}

/* モーダル */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: white;
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 2px solid #e5e7eb;
}

.modal-header h3 {
  font-size: 20px;
  font-weight: bold;
  color: #333;
}

/* フォーム */
form {
  padding: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: bold;
  color: #333;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
}

.loading {
  text-align: center;
  color: #6b7280;
  padding: 40px;
  font-size: 16px;
}

.empty {
  text-align: center;
  color: #6b7280;
  padding: 40px;
  font-size: 16px;
}