:root {
  --bg-body: #fff;
  --bg-controls: #f3f3f3;
  --bg-input: #fff;
  --bg-outputs: #d2e3e6;
  --bg-right: #fffbe6;
  --bg-canvas: #fff;
  --color-text: #000;
  --border-color: #ccc;
  --pre-bg: #fff;
}

body.dark-mode {
  --bg-body: #1f1f1f;
  --bg-controls: #242424;
  --bg-input: #4e4e4e;
  --bg-outputs: #383838;
  --bg-right: #1e1e1e;
  --bg-canvas: #181818;
  --color-text: #e4e4e4;
  --border-color: #555;
  --pre-bg: #222;
}

body {
  margin: 0;
  display: flex;
  height: 100vh;
  font-family: sans-serif;
  background: var(--bg-body);
  color: var(--color-text);
}

#controls {
  width: 25%;
  min-width: 200px;
  padding: 1em;
  background: var(--bg-controls);
  display: flex;
  flex-direction: column;
  gap: 1em;
  overflow-y: auto;
}

#outputs {
  width: 25%;
  min-width: 250px;
  padding: 1em;
  background: var(--bg-outputs);
  display: flex;
  flex-direction: column;
  gap: 1em;
  overflow-y: auto;
}

#right-panel {
  flex: 1;
  background: var(--bg-right);
  padding: 1em;
  padding-bottom: 4em;
  display: flex;
  flex-direction: column;
  overflow-y: hidden;
}

#canvas-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1em;
  margin-bottom: 4em;
}

#canvas {
  background: var(--bg-canvas);
  border: 1px solid var(--border-color);
  width: 80%;
  max-width: 80%;
  aspect-ratio: 1 / 1;
  display: block;
}

label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5em 1em;
  align-items: center;
}

input, select {
background: var(--bg-input);
  color: var(--color-text);
  border: 1px solid var(--border-color);
  padding: 0.25em;
  border-radius: 3px;
  width: 100%;
  margin: 0.25em 0;
}

pre {
  background: var(--pre-bg);
  padding: 0.5em;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  margin: 0.25em 0;
}

#darkModeToggle {
  position: fixed;
  bottom: 1em;
  left: 1em;
  z-index: 1000;
  padding: 0.5em 1em;
  background: var(--bg-controls);
  color: var(--color-text);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  cursor: pointer;
}

#footer {
  position: fixed;
  bottom: 0.5em;
  right: 0.5em;
  font-size: 0.8em;
  color: #666;
  background: transparent;
}

#footer a {
  color: inherit;
  text-decoration: underline;
}