body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f5f7fb;
  color: #222;
}

.container {
  max-width: 980px;
  margin: 24px auto;
  background: #fff;
  border: 1px solid #dfe4ee;
  border-radius: 8px;
  padding: 20px;
}

h1, h2 {
  margin-top: 0;
}

form {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 10px;
}

input[type="text"],
input[type="password"],
input[type="email"] {
  width: 100%;
  max-width: 420px;
  padding: 8px;
  border: 1px solid #bfc8d6;
  border-radius: 4px;
}

button {
  padding: 8px 14px;
  border: 1px solid #4b6cb7;
  background: #4b6cb7;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}

button.secondary {
  background: #fff;
  color: #4b6cb7;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.card {
  border: 1px solid #dfe4ee;
  border-radius: 8px;
  padding: 16px;
}

.alert {
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.alert.error {
  background: #ffe8e8;
  border: 1px solid #f2bbbb;
}

.alert.ok {
  background: #e9f9ef;
  border: 1px solid #b8e7c7;
}

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

th, td {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid #e8edf5;
}