body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: #0b0b0b;
  overflow: hidden;
  color: #fff;
}

.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 260px;
  height: 100vh;
  background: #111;
  padding: 20px;
  box-sizing: border-box;
}

h2 {
  margin-top: 0;
  font-size: 18px;
}

input, button {
  width: 100%;
  margin-top: 8px;
}

button {
  background: #6d5efc;
  border: none;
  padding: 10px;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
}

details {
  margin-top: 14px;
}

summary {
  cursor: pointer;
  font-size: 13px;
  opacity: 0.9;
}

.row {
  display: flex;
  gap: 8px;
}

.export {
  margin-top: 20px;
}

canvas {
  display: block;
}