body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #ffffff;
  color: #000000;
}

#interface-wrapper {
  display: flex;
  min-height: 100vh;
}

#controls {
  flex: 0 0 280px;
  padding: 20px;
  background-color: #b4b4b4;
  box-sizing: border-box;
  overflow-y: auto;
}

.control-section {
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 1px solid #999;
}

.control-section:last-child {
  border-bottom: none;
}

.control-section h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 18px;
  color: #f53d06;
  border-left: 4px solid #3cfc01;
  padding-left: 10px;
}

#controls label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: #000000;
}

#controls input[type="range"] {
  width: 100%;
  margin-bottom: 10px;
}

#controls input[type="color"],
#controls input[type="text"] {
  width: 100%;
  margin-bottom: 10px;
  padding: 6px;
  border: none;
  border-radius: 4px;
  background-color: #d1d1d1;
  color: #000000;
}

#artboard {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}