body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  margin: 0;
}

header {
  background: #1f2937;
  color: #fff;
  padding: 10px 20px;
}

nav a {
  color: #fff;
  margin-right: 15px;
  text-decoration: none;
}

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

.container {
  max-width: 960px;
  margin: 20px auto;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
}

input[type="text"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: 8px;
  margin: 4px 0 12px;
  border-radius: 4px;
  border: 1px solid #ddd;
  box-sizing: border-box;
}

button {
  padding: 8px 16px;
  border-radius: 4px;
  border: none;
  background: #2563eb;
  color: #fff;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

th,
td {
  border: 1px solid #ddd;
  padding: 8px;
}

th {
  background: #eee;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  color: #fff;
}

.badge-ok {
  background: #16a34a;
}

.badge-wait {
  background: #f97316;
}

.badge-error {
  background: #dc2626;
}

.qr-img {
  max-width: 280px;
  border: 1px solid #ddd;
  padding: 6px;
  border-radius: 6px;
}