body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f9faf9;
  color: #333;
}

header {
  background: #1f5f4a; /* your green */
  color: #fff;
  padding: 20px;
  text-align: center;
}

main {
  max-width: 420px;
  margin: 30px auto;
  padding: 0 15px;
}

.card {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
}

input {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

button {
  width: 100%;
  padding: 12px;
  background: #1f5f4a;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background: #174a3a;
}

.result {
  margin-top: 20px;
  padding: 15px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.hidden {
  display: none;
}

.status {
  font-weight: bold;
  margin-bottom: 10px;
}

footer {
  text-align: center;
  font-size: 12px;
  color: #777;
  margin-top: 40px;
}