* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f2f2f2;
  color: #333;
}

.site-header {
  background-color: #222;
  color: white;
  padding: 20px;
  text-align: center;
}

.container {
  width: min(900px, 92%);
  margin: 20px auto;
  display: grid;
  gap: 16px;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 12px;
}

label {
  display: block;
  margin-bottom: 12px;
  font-weight: bold;
}

input, textarea {
  width: 100%;
  padding: 10px;
  margin-top: 6px;
  border: 1px solid #ccc;
  border-radius: 10px;
}

button {
  background-color: #0077ff;
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

.form-message {
  margin-top: 10px;
  font-size: 14px;
}

.form-message.error {
  color: #d93025;
}

.form-message.success {
  color: #188038;
}

.site-footer {
  text-align: center;
  padding: 14px;
  font-size: 14px;
}