* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #0a0f1c;
  color: #e5f2ff;
  font-family: Inter, monospace;
}

header {
  display: flex;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid #1e293b;
}

#container {
  display: flex;
  height: calc(100vh - 60px);
}

aside {
  width: 200px;
  background: #0f172a;
  padding: 10px;
  border-right: 1px solid #1e293b;
}

aside h3 {
  margin-top: 0;
  font-size: 14px;
}

button {
  width: 100%;
  margin-bottom: 8px;
  padding: 8px;
  background: #1e293b;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background: #334155;
}

main {
  flex: 1;
  background: black;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
}