:root {
  --bg-color: #ffffff;
  --text-color: #222;
  --highlight-color: #f0f0f0;
  --button-color: #007bff;
}

body.dark {
  --bg-color: #1e1e1e;
  --text-color: #f5f5f5;
  --highlight-color: #333;
  --button-color: #4a90e2;
}

body {
  font-family: Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 20px;
  line-height: 1.5;
}

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

#textInput {
  width: 100%;
  height: 220px;
  padding: 12px;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #ccc;
  resize: none;
  background-color: var(--highlight-color);
  color: var(--text-color);
  transition: border-color 0.3s;
}

.stats {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.stat {
  flex: 1 1 200px;
  background-color: var(--highlight-color);
  padding: 12px;
  border-radius: 8px;
  font-weight: bold;
}

.buttons {
  margin-top: 15px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

button {
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background-color: var(--button-color);
  color: white;
  font-size: 16px;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #0056b3;
}