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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  color: #333;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 40px;
  text-align: center;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
}

.tabs {
  display: flex;
  background: #f5f5f5;
  border-bottom: 2px solid #ddd;
}

.tab-button {
  flex: 1;
  padding: 15px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s;
}

.tab-button:hover {
  background: #e0e0e0;
}

.tab-button.active {
  background: white;
  border-bottom: 3px solid #667eea;
}

.tab-content {
  display: none;
  padding: 40px;
}

.tab-content.active {
  display: block;
}

.section {
  margin-bottom: 30px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.section h2 {
  color: #333;
  font-size: 1.8rem;
}

.description {
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s;
}

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

.btn-primary:hover {
  background: #5568d3;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: #e0e0e0;
  color: #333;
}

.btn-secondary:hover {
  background: #d0d0d0;
}

.btn-danger {
  background: #f44336;
  color: white;
}

.btn-danger:hover {
  background: #da190b;
}

.btn-success {
  background: #4caf50;
  color: white;
}

.btn-large {
  padding: 15px 30px;
  font-size: 1.1rem;
}

/* Config Cards */
.configs-list {
  display: grid;
  gap: 20px;
}

.config-card {
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px;
  transition: all 0.3s;
  position: relative;
}

.config-card:hover {
  border-color: #667eea;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.config-card.active {
  border-color: #4caf50;
  background: #f1f8f4;
}

.config-card.active::before {
  content: '✓ 当前激活';
  position: absolute;
  top: 10px;
  right: 10px;
  background: #4caf50;
  color: white;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
}

.config-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.config-name {
  font-size: 1.3rem;
  font-weight: 600;
  color: #333;
}

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

.config-actions button {
  padding: 6px 12px;
  font-size: 0.9rem;
}

.config-details {
  display: grid;
  gap: 10px;
  color: #666;
  font-size: 0.95rem;
}

.config-detail {
  display: flex;
  align-items: center;
}

.config-detail strong {
  min-width: 150px;
  color: #333;
}

.config-detail code {
  background: #f5f5f5;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

/* Modal */
.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: 600px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid #e0e0e0;
}

.modal-header h3 {
  font-size: 1.5rem;
}

.close-btn {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: #999;
  line-height: 1;
}

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

/* Forms */
.form-group {
  margin-bottom: 20px;
  padding: 0 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #333;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

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

.form-group small {
  display: block;
  margin-top: 5px;
  color: #999;
  font-size: 0.85rem;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 20px;
  border-top: 1px solid #e0e0e0;
}

/* Results */
.results-container {
  margin-top: 30px;
  padding: 20px;
  background: #f9f9f9;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
}

.results-container h3 {
  margin-bottom: 15px;
  color: #333;
}

.result-success {
  background: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 15px;
}

.result-error {
  background: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 15px;
}

.result-info {
  background: #d1ecf1;
  border: 1px solid #bee5eb;
  color: #0c5460;
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 15px;
}

/* Tips */
.tips-list {
  background: #fff8e1;
  border-left: 4px solid #ffc107;
  padding: 20px 20px 20px 40px;
  border-radius: 4px;
}

.tips-list li {
  margin-bottom: 10px;
  color: #856404;
  line-height: 1.6;
}

.tips-list ul {
  margin-top: 10px;
  margin-left: 20px;
}

.tips-list code {
  background: #ffecb3;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
}

/* Footer */
footer {
  background: #f5f5f5;
  padding: 20px;
  text-align: center;
  color: #666;
  border-top: 1px solid #e0e0e0;
}

footer a {
  color: #667eea;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Loading Spinner */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: #999;
}

.empty-state h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}