* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 16px;
}

h1 {
  margin-top: 0;
  font-size: 28px;
}

.panel {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 12px 14px;
  margin: 14px 0;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.btn {
  border: 0;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  cursor: pointer;
}

.btn-primary {
  background: #2563eb;
  color: #fff;
}

.btn-secondary {
  background: #334155;
  color: #fff;
}

.muted {
  opacity: 0.8;
}

.small {
  font-size: 13px;
  line-height: 1.5;
}

code {
  display: inline-block;
  margin-top: 6px;
  background: #020617;
  border-radius: 6px;
  padding: 4px 6px;
}