:root {
  --bg: #fbfaf7;
  --fg: #1c1b19;
  --muted: #6b675f;
  --line: #e3dfd6;
  --panel: #ffffff;
  --accent: #1f5f8b;
  --ok: #1e6b3a;
  --ok-bg: #e8f3ec;
  --bad: #a3261b;
  --bad-bg: #fbecea;
  --warn: #8a5a00;
  --warn-bg: #fbf2dd;
  --info-bg: #eef1f5;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161514;
    --fg: #ecebe7;
    --muted: #a19d94;
    --line: #34322e;
    --panel: #1f1e1c;
    --accent: #7db7e0;
    --ok: #7fd39a;
    --ok-bg: #18301f;
    --bad: #f0897e;
    --bad-bg: #3a1d1a;
    --warn: #e8c070;
    --warn-bg: #362b14;
    --info-bg: #23272d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }

.top, main, .foot { max-width: 960px; margin: 0 auto; padding: 0 16px; }
main { max-width: 760px; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding-top: 18px; padding-bottom: 18px;
}
.brand { font-size: 17px; font-weight: 650; letter-spacing: -0.01em; color: var(--fg); text-decoration: none; }
button, textarea { font: inherit; color: inherit; }

h1 { font-size: 28px; line-height: 1.2; letter-spacing: -0.015em; margin: 24px 0 8px; }
.lead { color: var(--muted); margin: 0 0 24px; max-width: 60ch; }

.field { display: block; font-weight: 600; margin-bottom: 8px; }
textarea {
  width: 100%; min-height: 220px; resize: vertical;
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: 12px; font: 13px/1.45 var(--mono);
}
textarea:focus, select:focus, button:focus-visible, .file:focus-within {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 12px; }
button {
  min-height: 44px; padding: 0 22px; border: 0; border-radius: 8px;
  background: var(--accent); color: #fff; font-weight: 600; cursor: pointer;
}
@media (prefers-color-scheme: dark) { button { color: #0f1a22; } }
button:disabled { opacity: 0.6; cursor: progress; }
.file { position: relative; color: var(--accent); cursor: pointer; text-decoration: underline; }
button.link {
  min-height: 44px; padding: 0; background: none; color: var(--accent); font-weight: 400;
  text-decoration: underline;
}
@media (prefers-color-scheme: dark) { button.link { color: var(--accent); } }
.file input { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; }

.status { min-height: 1.5em; margin: 16px 0; color: var(--muted); }
.status.error { color: var(--bad); }

.verdict {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 16px;
  padding: 14px 16px; border-radius: 8px; margin-bottom: 16px;
}
.verdict strong { font-size: 18px; }
.verdict .counts { color: var(--muted); font-size: 14px; }
.verdict.ok { background: var(--ok-bg); color: var(--ok); }
.verdict.bad { background: var(--bad-bg); color: var(--bad); }

.doc {
  display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px;
  margin: 0 0 24px; font-size: 14px;
}
.doc dt { color: var(--muted); }
.doc dd { margin: 0; overflow-wrap: anywhere; }

.issues { list-style: none; padding: 0; margin: 0 0 32px; display: grid; gap: 10px; }
.issue {
  background: var(--panel); border: 1px solid var(--line); border-left-width: 4px;
  border-radius: 8px; padding: 12px 14px;
}
.issue.fatal { border-left-color: var(--bad); }
.issue.warning { border-left-color: var(--warn); }
.issue.info { border-left-color: var(--muted); }
.issue .head { display: flex; align-items: center; gap: 10px; }
.issue .sev { font-size: 12px; font-weight: 650; text-transform: uppercase; letter-spacing: 0.04em; }
.issue.fatal .sev { color: var(--bad); }
.issue.warning .sev { color: var(--warn); }
.issue.info .sev { color: var(--muted); }
.issue .rule { font: 13px var(--mono); }
.issue .msg { margin: 6px 0 0; }
.issue .hint { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; margin: 8px 0 0; font-size: 13px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.xpath { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.none { color: var(--muted); }

.foot { padding-top: 16px; padding-bottom: 32px; font-size: 14px; }
.foot p { margin: 0 0 8px; }
.foot::before { content: ""; display: block; border-top: 1px solid var(--line); margin-bottom: 16px; }
.muted { color: var(--muted); }

@media (max-width: 520px) {
  h1 { font-size: 24px; }
  .facts { grid-template-columns: 1fr; }
}
.term { white-space: nowrap; }
.lang { position: relative; display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; }
.lang select {
  appearance: none; -webkit-appearance: none; cursor: pointer;
  font: 14px/1.2 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--fg);
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  min-height: 40px; padding: 0 34px 0 12px;
}
.lang select:hover { border-color: var(--muted); }
.lang select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.lang::after {
  content: ""; position: absolute; right: 14px; top: 50%; width: 6px; height: 6px; margin-top: -5px;
  border: solid var(--muted); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); pointer-events: none;
}