body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f6fa;
  color: #333;
}

.container {
  max-width: 600px;
  margin: auto;
  padding: 20px;
}

h1 {
  text-align: center;
  color: #222;
  margin-bottom: 20px;
}

form {
  background: #fff;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
}

input,
select,
textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 16px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 14px;
  text-transform: uppercase;
}

textarea {
  resize: vertical;
}

button {
  background: #0066cc;
  color: #fff;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-size: 16px;
  width: 100%;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background: #004a99;
}

#submit-area {
  position: relative;
  height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#loading-spinner {
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid #fff;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  animation: spin 1s linear infinite;
  display: none;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}