body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f7f8fb;
}

.container {
  max-width: 740px;
  margin: 48px auto;
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

h1 {
  margin-top: 0;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 600;
}

input,
textarea,
button {
  padding: 10px;
  font-size: 15px;
}

button {
  border: none;
  background: #0a63ff;
  color: white;
  cursor: pointer;
  border-radius: 8px;
}

.error {
  background: #ffe4e4;
  color: #8f1515;
  border-radius: 6px;
  padding: 8px 10px;
  margin-bottom: 12px;
}