:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #1f2933;
  --muted: #66707a;
  --line: #dfe3e8;
  --accent: #005293;
  --error: #b42318;
  --error-bg: #fef3f2;
  --warning: #b54708;
  --warning-bg: #fffaeb;
  --ok: #067647;
  --ok-bg: #ecfdf3;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d;
    --panel: #1b2027;
    --ink: #e6e9ed;
    --muted: #97a1ac;
    --line: #2c333c;
    --accent: #6aa9e0;
    --error: #fda29b;
    --error-bg: #2a1614;
    --warning: #fdb022;
    --warning-bg: #2a1f0f;
    --ok: #75e0a7;
    --ok-bg: #0f2a1c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

.masthead { background: var(--panel); border-bottom: 1px solid var(--line); padding: 22px 0 18px; }
.masthead h1 { margin: 0 0 4px; font-size: 21px; letter-spacing: -0.01em; }
.lede { margin: 0; color: var(--muted); max-width: 70ch; }
.lede a { color: var(--accent); }

.layout { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 20px; padding-top: 20px; padding-bottom: 60px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }

.row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
label, .label { font-weight: 600; font-size: 13px; }
select { flex: 1; min-width: 0; padding: 7px 9px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); color: var(--ink); font: inherit; }

.sample-buttons { display: flex; gap: 6px; flex-wrap: wrap; }
button {
  font: inherit; cursor: pointer; border-radius: 7px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); padding: 6px 11px;
}
button:hover { border-color: var(--accent); }
button[type="submit"] { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; padding: 9px 20px; }
button[type="submit"]:disabled { opacity: 0.6; cursor: progress; }

textarea {
  width: 100%; min-height: 340px; resize: vertical; padding: 12px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink);
  font: 12.5px/1.55 var(--mono); tab-size: 2;
}

.actions { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.hint, .muted { color: var(--muted); font-size: 13px; }
kbd { font: 11px var(--mono); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; padding: 1px 4px; }

.api { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.api summary { cursor: pointer; color: var(--muted); font-size: 13px; }
.api pre { overflow-x: auto; background: var(--bg); border: 1px solid var(--line); border-radius: 7px; padding: 10px; font: 12px var(--mono); }
.api p { color: var(--muted); font-size: 13px; }

.empty { color: var(--muted); text-align: center; padding: 60px 20px; }
.empty p { margin: 4px 0; }

.verdict { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; }
.verdict h2 { margin: 0; font-size: 16px; }
.verdict.pass { background: var(--ok-bg); color: var(--ok); }
.verdict.fail { background: var(--error-bg); color: var(--error); }
.verdict .detail { color: inherit; opacity: 0.85; font-size: 13px; }

.totals { display: flex; gap: 18px; flex-wrap: wrap; padding: 0 0 14px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.total { display: flex; flex-direction: column; }
.total .n { font-size: 19px; font-weight: 700; }
.total .k { font-size: 12px; color: var(--muted); }

h3.section { font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin: 18px 0 8px; }

.findings { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.finding { border: 1px solid var(--line); border-left-width: 3px; border-radius: 7px; padding: 9px 11px; }
.finding.error { border-left-color: var(--error); background: var(--error-bg); }
.finding.warning { border-left-color: var(--warning); background: var(--warning-bg); }
.finding .path { font: 11.5px var(--mono); color: var(--muted); display: block; margin-bottom: 2px; word-break: break-all; }
.finding .msg { display: block; }
.finding .docs { font-size: 12px; color: var(--accent); }

.stops { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.stop { border: 1px solid var(--line); border-radius: 7px; padding: 10px 12px; }
.stop-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.stop-head .n { font-weight: 700; color: var(--muted); font-family: var(--mono); font-size: 12px; }
.stop-head .name { font-weight: 600; }
.stop-head .state { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.stop dl { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; margin: 8px 0 0; font-size: 13px; }
.stop dt { color: var(--muted); }
.stop dd { margin: 0; }
.stop .flag { color: var(--warning); }
.activity { font-size: 13px; padding: 4px 0 0; }
.activity code { font: 12px var(--mono); }