* {
  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;
}

.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.login-box {
  background: white;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #333;
  font-size: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: #555;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 14px;
  transition: border-color 0.3s;
}

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

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s;
}

.btn-primary {
  background: #667eea;
  color: white;
  width: 100%;
}

.btn-primary:hover {
  background: #5568d3;
}

.btn-success {
  background: #48bb78;
  color: white;
}

.btn-success:hover {
  background: #38a169;
}

.btn-secondary {
  background: #718096;
  color: white;
}

.btn-secondary:hover {
  background: #4a5568;
}

.btn-danger {
  background: #f56565;
  color: white;
}

.btn-danger:hover {
  background: #e53e3e;
}

.btn-delete {
  background: #fc8181;
  color: white;
  padding: 6px 12px;
  font-size: 12px;
}

.btn-delete:hover {
  background: #f56565;
}

.error-message {
  display: none;
  margin-top: 15px;
  padding: 12px;
  background: #fed7d7;
  color: #c53030;
  border-radius: 5px;
  font-size: 14px;
  text-align: center;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  background: white;
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  font-size: 28px;
}

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

.stats {
  padding: 30px;
  display: flex;
  gap: 20px;
}

.stat-card {
  flex: 1;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}

.stat-card-secondary {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.stat-label {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 10px;
}

.stat-value {
  font-size: 36px;
  font-weight: bold;
}

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

.modal.show {
  display: flex;
}

.modal-content {
  background: white;
  padding: 30px;
  border-radius: 10px;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-content h2 {
  margin-bottom: 20px;
  color: #333;
}

.modal-content p {
  margin-bottom: 15px;
  color: #555;
  line-height: 1.6;
}

.modal-content .warning {
  color: #e53e3e;
  font-weight: 600;
  background: #fed7d7;
  padding: 10px;
  border-radius: 5px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.modal-actions button {
  flex: 1;
}

.table-container {
  padding: 0 30px 30px;
  overflow-x: auto;
}

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

thead {
  background: #f7fafc;
}

th {
  padding: 15px;
  text-align: left;
  font-weight: 600;
  color: #4a5568;
  border-bottom: 2px solid #e2e8f0;
}

td {
  padding: 15px;
  border-bottom: 1px solid #e2e8f0;
  color: #2d3748;
}

tbody tr:hover {
  background: #f7fafc;
}

.loading {
  text-align: center;
  color: #718096;
  padding: 40px !important;
}

.session-key {
  font-family: 'Courier New', monospace;
  font-size: 12px;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-block;
  cursor: pointer;
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  padding: 20px 30px;
  border-top: 1px solid #e2e8f0;
}

.pagination button {
  padding: 8px 16px;
  border: 1px solid #e2e8f0;
  background: white;
  color: #4a5568;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s;
}

.pagination button:hover:not(:disabled) {
  background: #667eea;
  color: white;
  border-color: #667eea;
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination .page-info {
  color: #4a5568;
  font-size: 14px;
  min-width: 150px;
  text-align: center;
}

.pagination select {
  padding: 8px 12px;
  border: 1px solid #e2e8f0;
  border-radius: 5px;
  background: white;
  color: #4a5568;
  cursor: pointer;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 20px;
  }

  .header-actions {
    width: 100%;
    flex-direction: column;
  }

  .header-actions button {
    width: 100%;
  }

  .stats {
    flex-direction: column;
  }

  .table-container {
    overflow-x: scroll;
  }

  table {
    min-width: 800px;
  }
}