body {
  font-family: Arial, sans-serif;
  background: #f6f9fc;
  margin: 0;
  padding: 0;
  color: #333;
  text-align: center;
}

header {
  background-color: #205182;
  color: white;
  padding: 20px;
}

h1, h2, h3 {
  margin: 0.5em 0;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 30px auto;
  max-width: 800px;
}

.card {
  background: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  border-radius: 12px;
  padding: 20px;
  margin: 15px;
  width: 90%;
  max-width: 350px;
}

input {
  display: block;
  width: 90%;
  margin: 8px auto;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  background-color: #205182;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 10px 15px;
  cursor: pointer;
  width: 95%;
}

button:hover {
  background-color: #1a3e66;
}

.hidden {
  display: none;
}

footer {
  background-color: #205182;
  color: white;
  padding: 10px;
  position: fixed;
  bottom: 0;
  width: 100%;
}