:root {
  --bg: #0f1420; --panel: #171d2b; --panel2: #1e2536; --ink: #e7ecf5;
  --muted: #8a95ad; --line: #2a3346; --accent: #5b8cff; --accent2: #3fb27f;
  --bad: #ff6b6b; --warn: #f0b849; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 14px/1.45 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
.muted { color: var(--muted); font-weight: 400; }

.topbar { display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.brand { font-size: 16px; }
.admin { display: flex; gap: 8px; }
.admin input, .admin select { min-width: 200px; }

.grid { display: grid; grid-template-columns: minmax(360px, 480px) 1fr; gap: 16px; padding: 16px; align-items: start; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.output { position: sticky; top: 64px; }

h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted);
  margin: 18px 0 8px; border-top: 1px solid var(--line); padding-top: 12px; }
h2:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }

label { display: block; margin: 8px 0; font-size: 12px; color: var(--muted); }
input, select, textarea { width: 100%; margin-top: 4px; padding: 8px 10px; color: var(--ink);
  background: var(--panel2); border: 1px solid var(--line); border-radius: 7px; font-size: 13px; }
textarea { font-family: var(--mono); resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
button { cursor: pointer; padding: 8px 14px; border-radius: 7px; border: 1px solid var(--line);
  background: var(--panel2); color: var(--ink); font-size: 13px; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }

.status { margin-top: 12px; min-height: 20px; font-size: 13px; }
.status.ok { color: var(--accent2); } .status.err { color: var(--bad); }

.tabs { display: flex; gap: 4px; margin-bottom: 10px; }
.tab { padding: 6px 12px; font-size: 12px; }
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.pane { margin: 0; background: #0b0f18; border: 1px solid var(--line); border-radius: 8px;
  padding: 14px; font-family: var(--mono); font-size: 12.5px; line-height: 1.5;
  white-space: pre; overflow: auto; max-height: calc(100vh - 160px); }
#pane-lint, #pane-trial { white-space: normal; }
#pane-trial a { color: var(--accent); }
#pane-trial code { background: var(--panel2); padding: 1px 5px; border-radius: 4px; }
.lint-ok { color: var(--accent2); font-weight: 600; }
.lint-bad { color: var(--bad); font-weight: 600; }
.lint-na { color: var(--warn); font-weight: 600; }
.lint-list { margin: 8px 0 0; padding-left: 18px; }
.lint-list li { margin: 3px 0; }