:root {
  --bg: #ffffff;
  --fg: #1a1d23;
  --muted: #5b6472;
  --accent: #1d4ed8;
  --accent-fg: #ffffff;
  --card: #f5f7fa;
  --border: #dfe3e9;
  --ok: #15803d;
  --err: #b91c1c;
  --warn: #a16207;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1218;
    --fg: #e6e9ee;
    --muted: #9aa4b2;
    --accent: #7ba3ff;
    --accent-fg: #0f1218;
    --card: #171c25;
    --border: #2a3140;
    --ok: #4ade80;
    --err: #f87171;
    --warn: #facc15;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
a { color: var(--accent); }
main, .wrap { max-width: 62rem; margin: 0 auto; padding: 0 1.25rem; }
header.site {
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 0;
}
header.site .wrap { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
header.site .logo { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--fg); }
header.site .logo span { color: var(--accent); }
header.site nav { margin-left: auto; display: flex; gap: 1.1rem; }
header.site nav a { text-decoration: none; color: var(--muted); }
header.site nav a:hover, header.site nav a[aria-current="page"] { color: var(--fg); }
h1 { font-size: 2rem; line-height: 1.2; margin: 2.2rem 0 0.6rem; letter-spacing: -0.02em; }
.sub { color: var(--muted); font-size: 1.12rem; max-width: 44rem; margin: 0 0 1.6rem; }
.badges { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.8rem 0 1.4rem; padding: 0; list-style: none; font-size: 0.85rem; }
.badges li { background: var(--card); border: 1px solid var(--border); border-radius: 99px; padding: 0.15rem 0.7rem; color: var(--muted); }
.drop {
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: var(--card);
  padding: 2.2rem 1.5rem;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.drop.hover { border-color: var(--accent); }
.drop p { margin: 0.35rem 0; }
.drop .hintline { color: var(--muted); font-size: 0.92rem; }
.privacy { text-align: center; color: var(--muted); font-size: 0.9rem; margin: 0.8rem 0 2rem; }
button, .btn {
  font: inherit;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  border-radius: 8px;
  padding: 0.5rem 1.1rem;
  cursor: pointer;
}
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); font-weight: 600; }
button:hover { filter: brightness(1.06); }
.row { display: flex; gap: 0.7rem; justify-content: center; flex-wrap: wrap; margin-top: 1rem; }
#result { margin: 1.5rem 0 3rem; }
.verdict { display: flex; align-items: baseline; gap: 0.8rem; flex-wrap: wrap; margin: 1rem 0; }
.verdict .pill { font-weight: 700; border-radius: 8px; padding: 0.25rem 0.9rem; font-size: 1.05rem; }
.pill.ok { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.pill.err { background: color-mix(in srgb, var(--err) 15%, transparent); color: var(--err); }
.meta { color: var(--muted); }
ul.findings { list-style: none; padding: 0; margin: 1rem 0; display: grid; gap: 0.6rem; }
ul.findings li { border: 1px solid var(--border); border-left: 4px solid var(--err); border-radius: 8px; padding: 0.6rem 0.9rem; background: var(--card); }
ul.findings li.warn { border-left-color: var(--warn); }
ul.findings .rule { font-family: var(--mono); font-size: 0.85rem; color: var(--muted); }
ul.findings .hint { color: var(--muted); font-size: 0.95rem; margin-top: 0.2rem; }
details.official { margin-top: 0.3rem; }
details.official summary { cursor: pointer; color: var(--muted); font-size: 0.88rem; }
.einvoice { border: 1px solid var(--border); border-radius: 12px; padding: 1.4rem 1.6rem; background: var(--card); overflow-x: auto; }
.einvoice h2 { margin-top: 0; }
.einvoice table { border-collapse: collapse; width: 100%; margin: 0.8rem 0; }
.einvoice th, .einvoice td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.einvoice td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.einvoice .totals td:first-child { color: var(--muted); }
.einvoice .parties { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 1rem; }
.einvoice h3 { margin: 0.4rem 0 0.3rem; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
section.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; margin: 2.5rem 0; }
section.features article { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem 1.2rem; }
section.features h3 { margin: 0 0 0.4rem; font-size: 1.02rem; }
section.features p { margin: 0; color: var(--muted); font-size: 0.95rem; }
pre { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 1rem 1.2rem; overflow-x: auto; font-family: var(--mono); font-size: 0.88rem; line-height: 1.55; }
code { font-family: var(--mono); font-size: 0.92em; background: var(--card); border-radius: 4px; padding: 0.08em 0.35em; }
pre code { background: none; padding: 0; }
h2 { margin-top: 2.6rem; letter-spacing: -0.01em; }
table.plain { border-collapse: collapse; width: 100%; margin: 1rem 0; }
table.plain th, table.plain td { text-align: left; padding: 0.45rem 0.6rem; border-bottom: 1px solid var(--border); }
table.plain th { color: var(--muted); font-size: 0.88rem; }
footer.site { border-top: 1px solid var(--border); margin-top: 4rem; padding: 1.5rem 0 2.5rem; color: var(--muted); font-size: 0.92rem; }
footer.site .wrap { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: space-between; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip { position: absolute; left: -9999px; top: 0; background: var(--accent); color: var(--accent-fg); padding: 0.5rem 1rem; border-radius: 0 0 8px 0; z-index: 10; }
.skip:focus { left: 0; }
@media (max-width: 40rem) {
  h1 { font-size: 1.55rem; }
  .einvoice { padding: 1rem; }
}

.rule-card { border: 1px solid var(--border); border-radius: 10px; padding: 0.8rem 1.1rem; margin: 0.7rem 0; background: var(--card); }
.rule-card h3 { margin: 0 0 0.4rem; font-family: var(--mono); font-size: 1rem; }
.rule-card h3 a { text-decoration: none; }
.rule-card .official { color: var(--muted); font-size: 0.93rem; margin: 0.2rem 0; }
.rule-card .fix { margin: 0.4rem 0 0.1rem; }
.rule-card:target { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 30%, transparent); }