.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

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

.card {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.left, .right {
  background: #fff;
  border-radius: 16px;
  padding: 20px;
  flex: 1;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.input-group {
  margin-bottom: 20px;
}

label {
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
}

.value {
  float: right;
  color: #6c63ff;
}

input[type="range"] {
  width: 100%;
}

.toggle {
  display: flex;
  gap: 10px;
}

.toggle button {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: #eee;
  cursor: pointer;
}

.toggle button.active {
  background: #6c63ff;
  color: white;
}

.result {
  margin-top: 20px;
}

.result div {
  margin: 10px 0;
  font-size: 16px;
}

canvas {
  max-width: 250px;
  margin: auto;
  display: block;
}

@media(max-width: 768px){
  .card {
    flex-direction: column;
  }
}