body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: #f5f7fb;
  color: #1d2433;
  margin: 0;
  padding: 0;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: #0b3d91;
  color: #fff;
}

header .brand {
  font-weight: 700;
  letter-spacing: 0.5px;
}

header nav a {
  color: #dce6ff;
  margin-left: 12px;
  text-decoration: none;
}

main {
  max-width: 900px;
  margin: 20px auto;
  padding: 0 16px 40px;
}

.panel {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.06);
  padding: 16px 18px;
  margin-bottom: 16px;
}

.auth {
  max-width: 400px;
  margin: 80px auto;
  background: #fff;
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
}

form label {
  display: block;
  margin-bottom: 8px;
}

input[type="text"],
input[type="password"],
input[type="number"] {
  width: 100%;
  padding: 8px;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  margin-top: 4px;
}

button {
  background: #0b3d91;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 8px 12px;
  cursor: pointer;
}

button:hover {
  background: #0a2f71;
}

.flash {
  list-style: none;
  padding: 0;
}

.flash li {
  padding: 10px;
  margin-bottom: 8px;
  border-radius: 4px;
}

.flash li.success {
  background: #e6ffed;
  color: #1d5d39;
  border: 1px solid #b7f7c1;
}

.flash li.error {
  background: #ffecec;
  color: #b11a1a;
  border: 1px solid #ffc2c2;
}

.list {
  list-style: none;
  padding: 0;
}

.list li {
  padding: 8px 0;
  border-bottom: 1px solid #e4e7ec;
}

.list li:last-child {
  border-bottom: none;
}

.muted {
  color: #6b7280;
  margin-left: 8px;
}

pre {
  background: #0c1222;
  color: #e5e7eb;
  padding: 10px;
  border-radius: 6px;
  overflow-x: auto;
}

.inline {
  display: inline-block;
  margin-left: 8px;
}