html, body {
  font-family: system-ui,Segoe UI,Roboto,sans-serif;
  margin: 0;
  background: #0f1419;
  color: #e6edf3;
}

a {
  color: #58a6ff;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #30363d;
}

nav a {
  margin-right: 1rem;
}

.card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  background: #238636;
  color: white;
  border: none;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
}

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

.btn-secondary {
  background: #21262d;
  border: 1px solid #30363d;
}

input, textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid #30363d;
  background: #0d1117;
  color: #e6edf3;
}

label {
  display: block;
  margin: 0.5rem 0 0.25rem;
}

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

th, td {
  border-bottom: 1px solid #30363d;
  padding: 0.5rem;
  text-align: left;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  font-size: 0.8rem;
  background: #21262d;
}