:root {
  --bg: #f6f7f9; --surface: #ffffff; --text: #0f172a; --muted: #5b6474; --line: #e3e6eb;
  --accent: #1d4ed8; --accent-text: #ffffff; --ok: #15803d; --warn: #b45309; --bad: #b91c1c;
  --ok-bg: #dcfce7; --warn-bg: #fef3c7; --bad-bg: #fee2e2; --code-bg: #f1f3f6;
  --radius: 10px; --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --surface: #161b22; --text: #e6e9ef; --muted: #9aa4b2; --line: #2a313c;
    --accent: #6d9eff; --accent-text: #0d1117; --ok: #4ade80; --warn: #fbbf24; --bad: #f87171;
    --ok-bg: #12301f; --warn-bg: #33270d; --bad-bg: #3a1616; --code-bg: #0f141b;
    --shadow: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
.hidden { display: none !important; }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 24px;
  background: var(--surface); border-bottom: 1px solid var(--line); }
header.top .brand { font-weight: 700; text-decoration: none; color: var(--text); }
header.top .who { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; }
main { max-width: 1040px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 0 0 12px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow); margin-bottom: 20px; }
button, .btn { font: inherit; border-radius: 8px; border: 1px solid var(--line); background: var(--surface);
  color: var(--text); padding: 8px 14px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.danger { color: var(--bad); }
button:disabled { opacity: .55; cursor: not-allowed; }
button:focus-visible, a:focus-visible, input:focus-visible, label.drop:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
input[type=text], input[type=email], input[type=password] { font: inherit; width: 100%; padding: 9px 12px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); }
label.field { display: block; margin-bottom: 14px; font-weight: 600; font-size: 14px; }
label.field input { margin-top: 6px; font-weight: 400; }
.drop { display: block; border: 2px dashed var(--line); border-radius: var(--radius); padding: 28px 16px;
  text-align: center; color: var(--muted); cursor: pointer; margin-bottom: 14px; }
.drop.over { border-color: var(--accent); color: var(--text); }
.drop strong { color: var(--text); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.files { font-size: 13px; color: var(--muted); margin: -4px 0 14px; word-break: break-all; }
.progress { font-size: 14px; color: var(--muted); margin-top: 12px; }
.error { color: var(--bad); background: var(--bad-bg); border-radius: 8px; padding: 10px 12px; margin-top: 12px; }
.preview { width: 100%; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; margin-top: 12px; height: 240px; background: #fff; }
.preview > div { transform-origin: 0 0; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
.table-wrap { overflow-x: auto; }
.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 99px; white-space: nowrap; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.stats { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 0; padding: 0; list-style: none; }
.stats li { background: var(--code-bg); border-radius: 6px; padding: 2px 8px; font-size: 13px; }
.gap { border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin-bottom: 12px; }
.gap header { display: flex; gap: 10px; align-items: flex-start; }
.gap .gap-title { font-weight: 600; flex: 1; }
.gap label.gap-title { cursor: pointer; }
.gaps-sub { font-size: 15px; margin: 20px 0 4px; }
.gap dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 10px 0 0 28px; font-size: 14px; }
.gap dt { color: var(--muted); }
.gap dd { margin: 0; }
details.code { margin: 10px 0 0 28px; }
details.code summary { cursor: pointer; font-size: 14px; color: var(--muted); }
pre { background: var(--code-bg); border-radius: 8px; padding: 12px; overflow: auto; max-height: 320px; font-size: 12px; white-space: pre-wrap; word-break: break-all; }
.risk { color: var(--bad); font-size: 13px; margin: 8px 0 0 28px; font-weight: 600; }
ul.plain { padding-left: 18px; margin: 0; }
ul.plain li { margin-bottom: 6px; }
.login { max-width: 380px; margin: 10vh auto; }
.muted { color: var(--muted); }
@media (max-width: 640px) {
  header.top { padding: 12px 16px; }
  .gap dl, details.code, .risk { margin-left: 0; }
  .gap dl { grid-template-columns: 1fr; }
}
.folder-row { margin: -4px 0 14px; }
select { font: inherit; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); margin: 6px 0 14px; max-width: 100%; }
.actions { margin-top: 8px; }
.who a { color: var(--muted); }
#refine-result p { margin: 0 0 12px; }