.customer-details-container {
  padding: 20px;
  max-width: 1400px;
  margin: 0 auto;
  background: #f8fafc;
  min-height: 100vh;
}

/* Header Section */
.customer-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  margin-bottom: 24px;
}

.header-left {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.back-btn {
  background: #e2e8f0;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  color: #64748b;
  font-weight: 500;
  transition: all 0.2s;
}

.back-btn:hover {
  background: #cbd5e1;
  color: #475569;
}

.customer-basic-info h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1e293b;
  margin: 0 0 8px 0;
}

.status-badge {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.active { background: #dcfce7; color: #166534; }
.status-badge.inactive { background: #fef3c7; color: #92400e; }
.status-badge.suspended { background: #fecaca; color: #991b1b; }
.status-badge.pending { background: #dbeafe; color: #1d4ed8; }

.customer-id {
  color: #64748b;
  font-size: 14px;
  margin: 4px 0 0 0;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.status-dropdown, .edit-btn {
  padding: 8px 16px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: white;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.edit-btn {
  background: #3b82f6;
  color: white;
  border-color: #3b82f6;
}

.edit-btn:hover {
  background: #2563eb;
}

/* Summary Cards */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.summary-card {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  border-left: 4px solid;
}

.summary-card.earnings { border-left-color: #10b981; }
.summary-card.referrals { border-left-color: #3b82f6; }
.summary-card.level { border-left-color: #8b5cf6; }
.summary-card.orders { border-left-color: #f59e0b; }

.summary-card h3 {
  font-size: 14px;
  font-weight: 600;
  color: #64748b;
  margin: 0 0 8px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.summary-card .amount,
.summary-card .count,
.summary-card .level-number {
  font-size: 32px;
  font-weight: 700;
  color: #1e293b;
  margin: 0 0 4px 0;
}

.summary-card .period,
.summary-card .growth,
.summary-card .position,
.summary-card .value {
  font-size: 14px;
  color: #64748b;
}

.summary-card .growth {
  color: #10b981;
  font-weight: 500;
}

/* Tab Navigation */
.tab-navigation {
  display: flex;
  background: white;
  border-radius: 12px 12px 0 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  overflow: hidden;
}

.tab-btn {
  flex: 1;
  padding: 16px 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-weight: 500;
  color: #64748b;
  transition: all 0.2s;
  position: relative;
}

.tab-btn.active {
  color: #3b82f6;
  background: #f8fafc;
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: #3b82f6;
}

.tab-btn:hover:not(.active) {
  background: #f1f5f9;
  color: #475569;
}

/* Tab Content */
.tab-content {
  background: white;
  border-radius: 0 0 12px 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  min-height: 500px;
}

/* Overview Tab */
.overview-tab {
  padding: 32px;
}

.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.info-section h3 {
  font-size: 18px;
  font-weight: 600;
  color: #1e293b;
  margin: 0 0 20px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid #e2e8f0;
}

.info-grid {
  display: grid;
  gap: 16px;
}

.info-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid #f1f5f9;
}

.info-item label {
  font-weight: 500;
  color: #64748b;
  min-width: 140px;
}

.info-item span {
  color: #1e293b;
  font-weight: 500;
}

.referral-code {
  background: #dbeafe;
  color: #1d4ed8;
  padding: 4px 8px;
  border-radius: 6px;
  font-family: monospace;
  font-size: 14px;
}

/* Commissions Tab */
.commissions-tab {
  padding: 32px;
}

.commissions-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.commissions-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: #1e293b;
  margin: 0;
}

.commission-filters {
  display: flex;
  gap: 12px;
}

.filter-select, .date-filter {
  padding: 8px 12px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: white;
}

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

.commissions-table table {
  width: 100%;
  border-collapse: collapse;
}

.commissions-table th,
.commissions-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #f1f5f9;
}

.commissions-table th {
  background: #f8fafc;
  font-weight: 600;
  color: #374151;
  font-size: 14px;
}

.commission-type {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.commission-type.type-0 { background: #dcfce7; color: #166534; }
.commission-type.type-1 { background: #dbeafe; color: #1d4ed8; }
.commission-type.type-2 { background: #fef3c7; color: #92400e; }

.positive { color: #10b981; font-weight: 600; }
.negative { color: #ef4444; font-weight: 600; }

/* Genealogy Tab */
.genealogy-tab {
  padding: 32px;
}

.tree-visualization {
  max-width: 800px;
  margin: 0 auto;
}

.upline-section, .current-user-section, .downline-section {
  margin: 32px 0;
}

.upline-section h4, .downline-section h4 {
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  color: #64748b;
  margin-bottom: 20px;
}

.tree-node {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  padding: 16px;
  margin: 8px 0;
  transition: all 0.2s;
}

.tree-node.current {
  border-color: #3b82f6;
  background: #f0f9ff;
}

.tree-node.upline {
  border-color: #10b981;
  background: #f0fdf4;
}

.tree-node.downline {
  border-color: #f59e0b;
  background: #fffbeb;
}

.node-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.level-badge {
  background: #1e293b;
  color: white;
  padding: 4px 8px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  min-width: 32px;
  text-align: center;
}

.node-name {
  font-weight: 600;
  color: #1e293b;
}

.node-email {
  color: #64748b;
  font-size: 14px;
}

.current-indicator {
  background: #3b82f6;
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.referrals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.connector {
  text-align: center;
  font-size: 20px;
  color: #64748b;
  margin: 8px 0;
}

/* Referrals Tab */
.referrals-tab {
  padding: 32px;
}

.referrals-header {
  margin-bottom: 32px;
}

.referrals-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: #1e293b;
  margin: 0 0 16px 0;
}

.network-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.network-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.network-stats .label {
  font-size: 14px;
  color: #64748b;
  font-weight: 500;
}

.network-stats .value {
  font-size: 24px;
  font-weight: 700;
  color: #1e293b;
}

.referrals-list {
  display: grid;
  gap: 16px;
}

.referral-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  transition: all 0.2s;
}

.referral-card:hover {
  border-color: #3b82f6;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.referral-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.referral-avatar {
  width: 48px;
  height: 48px;
  background: #3b82f6;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 16px;
}

.referral-details h4 {
  font-size: 16px;
  font-weight: 600;
  color: #1e293b;
  margin: 0 0 4px 0;
}

.referral-details p {
  color: #64748b;
  margin: 0 0 4px 0;
  font-size: 14px;
}

.join-date {
  font-size: 12px;
  color: #94a3b8;
}

.referral-stats {
  display: flex;
  gap: 24px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-item span {
  font-size: 12px;
  color: #64748b;
  font-weight: 500;
}

.stat-item strong {
  font-size: 16px;
  font-weight: 600;
  color: #1e293b;
}

.referral-actions .view-btn {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.referral-actions .view-btn:hover {
  background: #2563eb;
}

/* Loading & Error States */
.loading-container, .error-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  text-align: center;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #e2e8f0;
  border-top: 4px solid #3b82f6;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .customer-header {
    flex-direction: column;
    gap: 16px;
  }
  
  .overview-grid {
    grid-template-columns: 1fr;
  }
  
  .referrals-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .customer-details-container {
    padding: 16px;
  }
  
  .summary-cards {
    grid-template-columns: 1fr;
  }
  
  .tab-navigation {
    flex-wrap: wrap;
  }
  
  .tab-btn {
    flex: none;
    min-width: 120px;
  }
  
  .referral-stats {
    flex-direction: column;
    gap: 12px;
  }
  
  .network-stats {
    justify-content: center;
    text-align: center;
  }
}