:root { --bg:#0b1220; --card:#121c2e; --bd:#1f2d44; --fg:#e2e8f0; --muted:#94a3b8; --accent:#38bdf8; }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg); font:14px/1.6 system-ui, sans-serif; }
header { display:flex; align-items:center; justify-content:space-between; padding:14px 22px; border-bottom:1px solid var(--bd); }
h1 { font-size:18px; margin:0; }
h1 .sub { font-size:12px; color:var(--muted); font-weight:400; margin-left:8px; }
main { display:grid; grid-template-columns:repeat(auto-fit,minmax(360px,1fr)); gap:16px; padding:20px; max-width:1100px; margin:0 auto; }
.card { background:var(--card); border:1px solid var(--bd); border-radius:10px; padding:16px 18px; }
.card h2 { font-size:14px; margin:0 0 8px; color:var(--accent); }
.muted { color:var(--muted); font-size:12px; margin:4px 0 10px; }
code { background:#0a1424; padding:1px 5px; border-radius:4px; color:#7dd3fc; }
button { background:#1e293b; color:var(--fg); border:1px solid #334155; border-radius:6px; padding:6px 14px; cursor:pointer; font-size:13px; margin-right:6px; }
button:hover { background:#243246; }
button.mini { padding:2px 8px; font-size:11px; }
input[type=text] { background:#0a1424; border:1px solid #334155; color:var(--fg); border-radius:6px; padding:6px 10px; width:60%; }
.out { background:#0a1424; border:1px solid var(--bd); border-radius:6px; padding:10px; margin-top:10px; max-height:200px; overflow:auto; white-space:pre-wrap; font-size:12px; color:#cbd5e1; }
.list { list-style:none; padding:0; margin:0; max-height:240px; overflow:auto; font-size:12px; }
.list li { padding:4px 8px; border-bottom:1px solid var(--bd); font-family:monospace; }
.badge { padding:4px 12px; border-radius:999px; font-size:12px; font-weight:600; }
.badge-on { background:#064e3b; color:#6ee7b7; }
.badge-off { background:#3f3f46; color:#d4d4d8; }
.badge-err { background:#7f1d1d; color:#fca5a5; }
footer { text-align:center; color:var(--muted); font-size:11px; padding:18px; border-top:1px solid var(--bd); }
.span2 { grid-column: span 2; }
#viewer { width:100%; height:420px; border-radius:8px; overflow:hidden; background:#0a1424; }
#viewer canvas { display:block; }
.slider-row { display:grid; grid-template-columns:90px 1fr 44px; align-items:center; gap:8px; margin-bottom:5px; }
.slider-row label { font-size:11px; font-family:monospace; color:#cbd5e1; }
.slider-row input[type=range] { width:100%; }
.slider-row .val { font-size:11px; font-family:monospace; color:#7dd3fc; text-align:right; }
.kv { display:flex; justify-content:space-between; border-bottom:1px solid var(--bd); padding:3px 0; font-size:12px; }
.kv b { color:#6ee7b7; font-family:monospace; }
@media (max-width:900px){ .span2{ grid-column:span 1; } }
.presets { display:flex; flex-wrap:wrap; gap:6px; margin-bottom:6px; }
.presets button { background:#173a2e; border-color:#225c47; color:#a7f3d0; }
.presets button:hover { background:#1e5040; }