:root {
  --primary-color: #1890ff;
  --secondary-color: #52c41a;
  --danger-color: #f5222d;
  --warning-color: #faad14;
  --text-color: #333;
  --light-text: #666;
  --lighter-text: #999;
  --border-color: #e8e8e8;
  --bg-color: #f0f2f5;
  --card-bg: #fff;
  --header-bg: #001529;
  --header-text: #fff;
}

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

html,
body {
  max-width: 100vw;
  overflow-x: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-color);
  background-color: var(--bg-color);
}

a {
  color: var(--primary-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  background-color: var(--header-bg);
  color: var(--header-text);
  padding: 16px 0;
}

.header h1 {
  margin: 0;
  font-size: 24px;
}

.main {
  padding: 20px 0;
}

.card {
  background-color: var(--card-bg);
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 20px;
  margin-bottom: 20px;
}

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

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

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 16px;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.btn {
  display: inline-block;
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: #40a9ff;
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background-color: #ff4d4f;
}

.connection-link {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--primary-color);
  cursor: pointer;
  font: inherit;
}

.connection-link:hover {
  text-decoration: underline;
}

.connection-status {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lighter-text);
}

.connection-status-connected {
  background: var(--secondary-color);
}

.connection-status-connecting,
.connection-status-reconnecting {
  background: var(--warning-color);
}

.connection-status-disconnected {
  background: var(--danger-color);
}

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

.table th,
.table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  font-weight: 500;
  background-color: #fafafa;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.badge-success {
  background-color: #e6f7e6;
  color: var(--secondary-color);
}

.badge-primary {
  background-color: #e6f7ff;
  color: var(--primary-color);
}

.alert {
  padding: 12px 16px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.alert-success {
  background-color: #f6ffed;
  border: 1px solid #b7eb8f;
  color: var(--secondary-color);
}

.alert-error {
  background-color: #fff1f0;
  border: 1px solid #ffa39e;
  color: var(--danger-color);
}

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.tab {
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tab.active {
  border-bottom-color: var(--primary-color);
  color: var(--primary-color);
}

.code-block {
  background-color: #f5f5f5;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 12px;
  font-family: monospace;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
}

.log-item {
  margin-bottom: 16px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.log-header {
  padding: 8px 12px;
  background-color: #fafafa;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
}

.log-body {
  padding: 12px;
}

.log-direction {
  margin-bottom: 8px;
  font-weight: 500;
}

.log-direction.client {
  color: var(--primary-color);
}

.log-direction.server {
  color: var(--secondary-color);
}

.log-content {
  margin-bottom: 16px;
}

.log-timestamp {
  color: var(--lighter-text);
  font-size: 12px;
}

.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.spinner {
  border: 4px solid rgba(0, 0, 0, 0.1);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border-left-color: var(--primary-color);
  animation: spin 1s linear infinite;
}

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