body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0; padding: 0;
}
nav {
  background: #333; padding: 0.5em;
}
nav a {
  color: #fff; text-decoration: none; margin-right: 1em;
}
.container {
  max-width: 600px;
  margin: 2em auto;
  background: #fff;
  padding: 1.5em;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
h1 {
  color: #333;
}
form input, form button {
  display: block;
  width: 100%;
  padding: 0.5em;
  margin-bottom: 1em;
  border: 1px solid #ccc;
  border-radius: 4px;
}
form button {
  background: #007BFF; color: white; border: none; cursor: pointer;
}
form button:hover {
  background: #0056b3;
}
.table { width:100%; border-collapse:collapse; }
.table th, .table td {
  padding:0.5em; border:1px solid #ddd;
}
.actions a {
  margin-right:0.5em; color:#007BFF; text-decoration:none;
}
.alert {
  padding:0.75em; background:#f8d7da; color:#721c24; border-radius:4px;
  margin-bottom:1em;
}
.site-footer {
  background:#333; color:#fff; text-align:center; padding:1em 0; margin-top:2em;
}
.site-footer p { margin:0; font-size:0.9em; }