* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: sans-serif;
  font-size: 14px;
  background: #f5f5f5;
  color: #333;
}

.container {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 16px;
}

.layout {
  display: flex;
  gap: 16px;
  align-items: stretch;
}

.left-col {
  flex: 1;
  min-width: 0;
}

.response-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
h1 {
  font-size: 20px;
  margin-bottom: 24px;
}
h2 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 4px;
  color: #555;
}
input,
textarea {
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
}
input:focus,
textarea:focus {
  border-color: #4caf50;
}
.field {
  margin-bottom: 12px;
}

button {
  width: 100%;
  padding: 9px;
  background: #4caf50;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
}
button:hover {
  background: #43a047;
}
button:disabled {
  background: #aaa;
  cursor: default;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

#response {
  width: 100%;
  flex: 1;
  min-height: 200px;
  font-family: monospace;
  font-size: 13px;
  background: #fafafa;
  resize: none;
}