:root {
  --bg: #0c0f12;
  --panel: #141a20;
  --panel2: #1c252e;
  --line: #283340;
  --text: #d6e1ec;
  --dim: #7a8896;
  --accent: #4ab8ff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 ui-monospace, "JetBrains Mono", Menlo, monospace;
}

body {
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: 44px 1fr;
  grid-template-areas:
    "top top"
    "side stage";
  height: 100vh;
}

.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.topbar .title { font-weight: bold; color: var(--accent); }
.topbar .meta { color: var(--text); }
.dim { color: var(--dim); }

.sidebar {
  grid-area: side;
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 12px;
}

.sidebar section { margin-bottom: 18px; }
.sidebar h3 {
  margin: 0 0 8px 0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.fields { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  gap: 6px;
  font-family: inherit;
  font-size: 12px;
}
.chip[aria-selected="true"] {
  border-color: var(--accent);
  background: #102333;
}

.btn {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
}
.btn:hover { border-color: var(--accent); }

.row { display: flex; align-items: center; gap: 8px; margin: 6px 0; }
.row label { color: var(--dim); flex: 0 0 auto; }
.row input[type=range] { flex: 1; accent-color: var(--accent); }

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 3px 0;
  cursor: pointer;
}
.check input { accent-color: var(--accent); }
.sw {
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 2px;
  background: var(--c);
}

.kv {
  display: flex;
  justify-content: space-between;
  padding: 2px 0;
}
.kv span { color: var(--dim); }

.stage {
  grid-area: stage;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #06080a;
  overflow: hidden;
  padding: 16px;
}
#canvas {
  max-width: 100%;
  max-height: 100%;
  background: #000;
  border: 1px solid var(--line);
  border-radius: 4px;
  image-rendering: pixelated;
}