* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans",
    "Helvetica Neue", sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 28rem;
  overflow: hidden;
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid #eee;
}

.card-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-header p {
  color: #666;
  font-size: 0.875rem;
}

.card-content {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 0.375rem;
  font-size: 1rem;
  transition: border-color 0.15s ease-in-out;
}

input:focus {
  outline: none;
  border-color: #4f46e5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

button {
  display: block;
  width: 100%;
  padding: 0.75rem;
  background-color: #4f46e5;
  color: white;
  border: none;
  border-radius: 0.375rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease-in-out;
}

button:hover {
  background-color: #4338ca;
}

button:disabled {
  background-color: #a5a5a5;
  cursor: not-allowed;
}

.error-message {
  margin-top: 1rem;
  padding: 0.75rem;
  background-color: #fee2e2;
  border: 1px solid #fecaca;
  border-radius: 0.375rem;
  color: #b91c1c;
}

.card-footer {
  padding: 1.5rem;
  border-top: 1px solid #eee;
}

.card-footer h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.result-box {
  padding: 0.75rem;
  background-color: #f9fafb;
  border-radius: 0.375rem;
  overflow-x: auto;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: monospace;
  font-size: 0.875rem;
}

.hidden {
  display: none;
}

#loading {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1rem;
}

.spinner {
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  border-top: 3px solid #4f46e5;
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
  margin-right: 0.5rem;
}

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