body {
  font-family: Arial, sans-serif;
  background-color: #f9fafb;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 500px;
  margin: 40px auto;
  padding: 30px;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.logo {
  display: block;
  margin: 0 auto 20px;
  max-width: 400px;
}

form label {
  display: block;
  margin-top: 15px;
  font-weight: bold;
}

form input[type="text"],
form input[type="number"],
form select {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-sizing: border-box;
}

form button {
  margin-top: 20px;
  width: 100%;
  padding: 12px;
  background-color: #008000;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

form button:hover {
  background-color: #006400;
}

a.whatsapp {
  display: block;
  margin-top: 25px;
  text-align: center;
  text-decoration: none;
  background-color: #25d366;
  color: white;
  padding: 12px;
  border-radius: 8px;
  font-weight: bold;
  transition: background-color 0.2s ease;
}

a.whatsapp:hover {
  background-color: #1ebe5d;
}
input:invalid {
  border-color: red;
}

::placeholder {
  color: #999;
}

a.whatsapp {
  max-width: 100%;
  text-align: center;
}