:root {
  --bg: #0b0c10;
  --panel: #121318;
  --text: #e6e6e6;
  --muted: #a0a3ad;
  --primary: #6ea8fe;
  --accent: #7be495;
  --warning: #ffd166;
  --danger: #ff6b6b;
  --border: #1e2230;
  --shadow: rgba(0,0,0,.25);
}
html.light {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --text: #1a1b1e;
  --muted: #636a76;
  --primary: #0d6efd;
  --accent: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #e6e8ee;
  --shadow: rgba(0,0,0,.08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: ui-sans-serif, system-ui, Segoe UI, Roboto, Arial; background: var(--bg); color: var(--text); }
.app-header, .app-footer { display:flex; align-items:center; justify-content:space-between; padding:16px 20px; background:var(--panel); border-bottom:1px solid var(--border); }
.app-footer { border-top:1px solid var(--border); border-bottom:none; }
.header-actions { display:flex; gap:10px; }
.container { display:grid; gap:16px; padding:16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 900px) { .container { grid-template-columns: 1fr; } }
.panel { background:var(--panel); border:1px solid var(--border); border-radius:12px; box-shadow:0 10px 30px var(--shadow); padding:16px; }
.label { display:block; margin-bottom:8px; color:var(--muted); }
textarea { width:100%; min-height:180px; resize:vertical; color:var(--text); background:#0f1117; border:1px solid var(--border); border-radius:10px; padding:12px 14px; line-height:1.5; }
html.light textarea { background:#f5f7fb; }
.controls { display:flex; gap:12px; margin-top:12px; flex-wrap:wrap; }
.control { display:grid; gap:6px; min-width:180px; }
select, input[type="range"] { padding:8px 10px; border-radius:8px; border:1px solid var(--border); background:transparent; color:var(--text); }
.ticks { display:flex; justify-content:space-between; font-size:12px; color:var(--muted); }
.actions { display:flex; gap:10px; margin-top:12px; }
button { border:1px solid var(--border); background:transparent; color:var(--text); padding:10px 14px; border-radius:10px; cursor:pointer; }
button.primary { background:var(--primary); color:white; border-color:transparent; }
#status { min-height:22px; margin-top:10px; color:var(--muted); }
#status.ok { color:var(--accent); } #status.warn { color:var(--warning); } #status.err { color:var(--danger); }
.output-header { display:flex; align-items:center; justify-content:space-between; }
.output-actions { display:flex; gap:8px; }
.variants { display:grid; gap:12px; margin-top:10px; }
.variant { border:1px dashed var(--border); border-radius:10px; padding:12px; background: radial-gradient(1200px 50px at 0% 0%, rgba(110,168,254,0.06), transparent); }
.variant .meta { display:flex; gap:10px; color:var(--muted); font-size:12px; margin-bottom:6px; }