html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Inter", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

.canvas-shell {
  width: min(100%, 920px);
  min-height: auto;
}

.canvas-viewport {
  width: min(100%, 760px);
  height: 560px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 1.5rem;
  border: 1px dashed #d6d3d1;
  background:
    linear-gradient(45deg, #f5f5f4 25%, transparent 25%),
    linear-gradient(-45deg, #f5f5f4 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #f5f5f4 75%),
    linear-gradient(-45deg, transparent 75%, #f5f5f4 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

.canvas-viewport canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  box-shadow: 0 12px 30px rgba(28, 25, 23, 0.12);
}

@media (max-width: 1024px) {
  .canvas-viewport {
    width: min(100%, 680px);
    height: 500px;
  }
}

@media (max-width: 768px) {
  .canvas-viewport {
    width: 100%;
    height: min(70vh, 420px);
    min-height: 320px;
  }
}