* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: #ffffff;
  color: #111;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
}

h1 {
  margin-bottom: 8px;
  font-size: 28px;
}

.subtitle {
  margin-bottom: 20px;
  color: #555;
}

textarea {
  width: 100%;
  min-height: 180px;
  padding: 14px;
  font-size: 15px;
  line-height: 1.5;
  border: 1px solid #ccc;
  border-radius: 6px;
  resize: vertical;
  margin-bottom: 16px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 14px;
}

button {
  padding: 10px 18px;
  font-size: 15px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background: #111;
  color: #fff;
}

button:hover {
  opacity: 0.9;
}

#copyBtn {
  margin-top: 10px;
}