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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  color: #1f2937;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  padding: 30px;
}

.header {
  text-align: center;
  margin-bottom: 30px;
}

.header h1 {
  font-size: 2.5rem;
  color: #1f2937;
  margin-bottom: 8px;
}

.subtitle {
  color: #6b7280;
  font-size: 1.1rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.stat-card {
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.stat-card.pending {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

.stat-card.approved {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
}

.stat-card.rejected {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
}

.stat-value {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: #1f2937;
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: #4b5563;
  margin-top: 4px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 20px;
  background: #f9fafb;
  border-radius: 12px;
}

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

.chip {
  padding: 8px 16px;
  border: 2px solid #e5e7eb;
  background: #ffffff;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
  color: #6b7280;
}

.chip:hover {
  border-color: #667eea;
  color: #667eea;
}

.chip.active {
  background: #667eea;
  border-color: #667eea;
  color: #ffffff;
}

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

.search {
  padding: 10px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.95rem;
  width: 280px;
  transition: border-color 0.2s;
}

.search:focus {
  outline: none;
  border-color: #667eea;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: #f3f4f6;
  color: #1f2937;
  border: 2px solid #e5e7eb;
}

.btn-secondary:hover {
  background: #e5e7eb;
}

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

.table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
}

.table thead {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #ffffff;
}

.table th {
  padding: 16px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table td {
  padding: 14px 12px;
  border-bottom: 1px solid #e5e7eb;
  font-size: 0.95rem;
}

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

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

.table tbody tr:last-child td {
  border-bottom: none;
}

.status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
}

.status-pending {
  background: #fef3c7;
  color: #92400e;
}

.status-approved {
  background: #d1fae5;
  color: #065f46;
}

.status-rejected {
  background: #fee2e2;
  color: #991b1b;
}

.action-buttons {
  display: flex;
  gap: 8px;
}

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

.btn-edit {
  background: #dbeafe;
  color: #1e40af;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.btn-edit:hover {
  background: #bfdbfe;
}

.btn-delete {
  background: #fee2e2;
  color: #991b1b;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.btn-delete:hover {
  background: #fecaca;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: #ffffff;
  border-radius: 16px;
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideIn 0.3s ease;
}

.modal-large {
  max-width: 800px;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  border-bottom: 1px solid #e5e7eb;
}

.modal-header h2 {
  font-size: 1.5rem;
  color: #1f2937;
}

.close {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: #9ca3af;
  line-height: 1;
}

.close:hover {
  color: #1f2937;
}

#form {
  padding: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

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

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: #374151;
  font-size: 0.9rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

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

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
}

.log-container {
  padding: 24px;
  max-height: 60vh;
  overflow-y: auto;
}

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

.log-table thead {
  background: #f3f4f6;
  position: sticky;
  top: 0;
}

.log-table th,
.log-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
}

.log-table th {
  font-weight: 600;
  color: #374151;
}

.log-table td {
  font-size: 0.9rem;
  color: #4b5563;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: #9ca3af;
}

.empty-state svg {
  width: 80px;
  height: 80px;
  margin-bottom: 16px;
  opacity: 0.5;
}

@media (max-width: 768px) {
  .container {
    padding: 16px;
  }

  .header h1 {
    font-size: 1.8rem;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .actions {
    flex-direction: column;
  }

  .search {
    width: 100%;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .table {
    font-size: 0.85rem;
  }

  .table th,
  .table td {
    padding: 10px 8px;
  }
}