:root {
  --bg: #0f1115;
  --card: #151923;
  --text: #e7e9ee;
  --muted: #9aa3b2;
  --accent: #6ea8fe;
  --border: #242a36;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji';
  background: var(--bg); color: var(--text);
}
header { padding: 24px; border-bottom: 1px solid var(--border); }
h1 { margin: 0 0 8px; font-weight: 700; }
header p { margin: 0; color: var(--muted); }
main { padding: 16px; max-width: 1200px; margin: 0 auto; }
.inputs { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.controls { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; }
.controls input { background: #0c0f14; color: var(--text); border: 1px solid var(--border); padding: 8px 10px; border-radius: 8px; }
.controls button { cursor: pointer; background: var(--accent); color: #001233; border: none; padding: 10px 14px; border-radius: 10px; font-weight: 700; }
.controls button:disabled { opacity: 0.6; cursor: not-allowed; }
textarea#codeInput { width: 100%; height: 240px; background: #0c0f14; color: var(--text); padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }
.results { margin-top: 16px; }
.columns { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.col { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; min-height: 300px; }
.col h2 { margin-top: 0; }
pre { background: #0c0f14; border: 1px solid var(--border); border-radius: 8px; padding: 12px; overflow: auto; }
ol#explanations { margin: 0; padding-left: 22px; line-height: 1.5; }
ol#explanations li { margin: 0 0 6px; }
footer { text-align: center; color: var(--muted); padding: 16px 0 32px; }
@media (max-width: 900px) { .columns { grid-template-columns: 1fr; } }