body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f6f8;
  margin: 0;
  color: #222;
}

.container {
  max-width: 900px;
  margin: 30px auto;
  background: #fff;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,.08);
}

.login-box {
  max-width: 420px;
}

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

h2 {
  font-size: 18px;
  margin-top: 28px;
}

label {
  display: block;
  margin-top: 14px;
  font-weight: 600;
}

input, textarea, select {
  width: 100%;
  box-sizing: border-box;
  padding: 10px;
  margin-top: 6px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
}

button, .button {
  display: inline-block;
  margin-top: 18px;
  background: #0b63ce;
  color: #fff;
  padding: 10px 16px;
  border: 0;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  font-size: 15px;
}

.button.secondary, button.secondary {
  background: #555;
}

.button.danger, button.danger {
  background: #b00020;
}

.error {
  background: #ffe8e8;
  color: #9b0000;
  padding: 10px;
  border-radius: 8px;
  margin: 12px 0;
}

.success {
  background: #e6f7ea;
  color: #116b2f;
  padding: 10px;
  border-radius: 8px;
  margin: 12px 0;
}

.nav {
  margin-bottom: 18px;
}

.nav a {
  margin-right: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

th, td {
  border-bottom: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}

.small {
  color: #666;
  font-size: 13px;
}