:root {
  --bg: #0f1216; --card: #171c22; --line: #2a323c; --fg: #e6edf3; --muted: #9aa7b4;
  --accent: #3b82f6; --ok: #22c55e; --bad: #ef4444; --warn: #f59e0b;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
a { color: var(--accent); }
.topbar { display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; border-bottom: 1px solid var(--line); background: #12161b; }
.brand { font-weight: 700; font-size: 18px; }
.brand span { color: var(--accent); }
.who { color: var(--muted); font-size: 13px; }
.wrap { max-width: 920px; margin: 22px auto; padding: 0 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 18px 20px; margin-bottom: 18px; }
h2 { margin: 0 0 4px; font-size: 17px; }
h3 { margin: 18px 0 8px; font-size: 14px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.muted { color: var(--muted); }
.hidden { display: none !important; }
label { display: block; font-size: 13px; color: var(--muted); margin: 8px 0 2px; }
input, select { width: 100%; padding: 8px 10px; background: #0d1116; color: var(--fg);
  border: 1px solid var(--line); border-radius: 7px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; }
button { padding: 9px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: #222b35; color: var(--fg); cursor: pointer; font-weight: 600; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button:disabled { opacity: .5; cursor: not-allowed; }
.actions { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.row { display: flex; align-items: center; justify-content: space-between;
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 8px; }
.pill { font-size: 12px; padding: 2px 8px; border-radius: 999px; font-weight: 700; }
.pill.ok { background: rgba(34,197,94,.15); color: var(--ok); }
.pill.bad { background: rgba(239,68,68,.15); color: var(--bad); }
.pill.warn { background: rgba(245,158,11,.15); color: var(--warn); }
.verdict { padding: 10px 14px; border-radius: 8px; font-weight: 700; margin: 10px 0; }
.verdict.ok { background: rgba(34,197,94,.12); color: var(--ok); }
.verdict.bad { background: rgba(239,68,68,.12); color: var(--bad); }
.verdict.warn { background: rgba(245,158,11,.12); color: var(--warn); }
.kv { display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.kv .k { color: var(--muted); }
pre { background: #0d1116; border: 1px solid var(--line); border-radius: 7px; padding: 10px; overflow: auto; font-size: 12px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.split > div { min-width: 0; }
@media (max-width: 780px) { .split { grid-template-columns: 1fr; } }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--line); }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
td input { width: 100%; padding: 5px 7px; text-align: right; }
.drop { display: block; border: 2px dashed var(--line); border-radius: 10px; padding: 22px; text-align: center; color: var(--muted); cursor: pointer; }
.drop input { display: none; }
.banner { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; }
.banner.error { background: rgba(239,68,68,.12); color: var(--bad); border: 1px solid rgba(239,68,68,.3); }
.spinner { display: inline-block; width: 13px; height: 13px; border: 2px solid var(--line);
  border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin-right: 7px; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }
/* anchors styled as buttons (downloads) */
a.btn { display: inline-block; padding: 9px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: #222b35; color: var(--fg); text-decoration: none; font-weight: 600; }
a.btn:hover { border-color: var(--accent); }
/* off-boarding danger zone */
summary { cursor: pointer; }
summary.danger { font-weight: 700; color: var(--bad); }
button.danger { background: rgba(239,68,68,.15); border-color: rgba(239,68,68,.4); color: var(--bad); }
button.danger:hover:not(:disabled) { background: rgba(239,68,68,.25); }
/* long hashes (manifest / certificate) must wrap, not overflow */
#offboardBody .kv > div:last-child, #manifestBody .kv > div:last-child { word-break: break-all; margin-left: 14px; }