main {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

body {
  background-color: #f0f0f0;
  height: 100vh;
}

.card {
  max-width: 400px;
  padding: 20px;
  background-color: #ffffff;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
}

textarea {
  width: 100%;
  padding: 10px;
  box-sizing: border-box;
  margin-bottom: 10px;
  resize: vertical;
  max-height: 250px;
  min-height: 50px;
}

#result, #loading {
  margin-top: 20px;
}

footer {
  margin-top: 30px;
  text-align: center;
  color: #888;
  margin-top: auto;
}

.credits {
  display: flex;
  justify-content: space-between;
  margin: 20px;
}

.credit-cards {
  display: flex;
  justify-content: center;
}

header {
  padding: 16px;
}

.hidden {
  display: none;
}