:root { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial; }
body { margin: 0; background: #0b0f14; color: #e6edf3; }
a { color: #7dd3fc; }
.container { max-width: 980px; margin: 0 auto; padding: 18px; }
.card { background: #111827; border: 1px solid #1f2937; border-radius: 12px; padding: 14px; margin: 14px 0; }
label { display:block; margin: 8px 0 6px; color:#cbd5e1; }
input { width: 100%; padding: 12px; border-radius: 10px; border: 1px solid #334155; background: #0b1220; color:#e6edf3; font-size: 16px; }
button { padding: 10px 12px; border-radius: 10px; border: 1px solid #334155; background: #0b1220; color: #e6edf3; cursor:pointer; }
button.primary { background:#1d4ed8; border-color:#1d4ed8; }
.row { display:flex; align-items:center; gap:10px; }
.spacer { flex:1; }
.grid { display:grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 800px){ .grid{ grid-template-columns: 1fr; } }
.muted { color: #94a3b8; }
.warn { margin-top: 10px; color: #fbbf24; }
.pre { background:#0b1220; padding:12px; border-radius:10px; border:1px solid #334155; overflow:auto; }