:root {
  color-scheme: light dark;
  --ca-bg: #f8fafc;
  --ca-text: #0f172a;
  --ca-subtext: #334155;
  --ca-panel-bg: #ffffff;
  --ca-panel-border: #cbd5e1;
  --ca-canvas-bg: #ffffff;
  --ca-canvas-border: #94a3b8;
  --ca-input-bg: #ffffff;
  --ca-input-border: #94a3b8;
  --ca-button-bg: #e2e8f0;
  --ca-button-hover: #cbd5e1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ca-bg: #020617;
    --ca-text: #e2e8f0;
    --ca-subtext: #cbd5e1;
    --ca-panel-bg: #111827;
    --ca-panel-border: #1f2937;
    --ca-canvas-bg: #020617;
    --ca-canvas-border: #334155;
    --ca-input-bg: #0f172a;
    --ca-input-border: #475569;
    --ca-button-bg: #1e293b;
    --ca-button-hover: #334155;
  }
}

body {
  margin: 0;
  background: var(--ca-bg);
  color: var(--ca-text);
}

.ca-rule-container {
  max-width: 1260px;
  margin: 0 auto;
  padding: 20px;
  color: var(--ca-text);
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

.ca-rule-header {
  margin-bottom: 14px;
}

.ca-rule-subtitle {
  color: var(--ca-subtext);
}

.ca-rule-main {
  display: grid;
  grid-template-columns: minmax(460px, 1.4fr) minmax(340px, 1fr);
  gap: 14px;
}

.ca-rule-canvas-panel,
.ca-rule-controls,
.ca-rule-formula-card {
  background: var(--ca-panel-bg);
  border: 1px solid var(--ca-panel-border);
  border-radius: 12px;
  padding: 14px;
}

#caCanvas {
  width: 100%;
  max-height: 72vh;
  background: var(--ca-canvas-bg);
  border: 1px solid var(--ca-canvas-border);
  border-radius: 8px;
  display: block;
  image-rendering: pixelated;
}

.ca-rule-stats {
  display: flex;
  gap: 14px;
  margin-top: 10px;
  flex-wrap: wrap;
  font-size: 14px;
}

.ca-rule-controls h2 {
  margin-top: 0;
}

.ca-rule-control-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.ca-rule-inline {
  display: grid;
  grid-template-columns: 1fr 90px;
  gap: 8px;
}

.ca-rule-control-grid input,
.ca-rule-control-grid select {
  width: 100%;
  box-sizing: border-box;
  background: var(--ca-input-bg);
  color: var(--ca-text);
  border: 1px solid var(--ca-input-border);
  border-radius: 8px;
  padding: 7px;
}

.ca-rule-actions {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ca-rule-actions button {
  border: 1px solid var(--ca-input-border);
  background: var(--ca-button-bg);
  color: var(--ca-text);
  padding: 7px 12px;
  border-radius: 8px;
  cursor: pointer;
}

.ca-rule-actions button:hover {
  background: var(--ca-button-hover);
}

.ca-rule-formula-card {
  margin-top: 14px;
}

.ca-rule-formula {
  margin-top: 10px;
  padding: 10px;
  border-radius: 8px;
  background: color-mix(
    in oklab,
    var(--ca-panel-bg) 86%,
    var(--ca-panel-border)
  );
  overflow-x: auto;
}

.ca-rule-tip {
  margin-top: 10px;
  color: var(--ca-subtext);
}

@media (max-width: 980px) {
  .ca-rule-main {
    grid-template-columns: 1fr;
  }
}