:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1b1f23;
  --muted: #5c6670;
  --panel: #f6f7f8;
  --border: #d5d9de;
  --accent: #1f5fa8;
  --accent-fg: #ffffff;
  --ok-bg: #e6f4ea;
  --ok-fg: #166534;
  --ok-border: #7fc48f;
  --fail-bg: #fdecec;
  --fail-fg: #9f1d1d;
  --fail-border: #e79a9a;
  --notice-bg: #fff6e0;
  --notice-fg: #7a5200;
  --notice-border: #e8c979;
  --code-bg: #eceef1;
  --unknown-bg: #fff6e0;
  --unknown-fg: #7a5200;
  --unknown-border: #e8c979;
  --outside-bg: #eef1f5;
  --outside-fg: #3d4a5a;
  --outside-border: #aab4c2;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --fg: #e6e8eb;
    --muted: #9aa4ae;
    --panel: #1d2126;
    --border: #353b42;
    --accent: #6ea8e8;
    --accent-fg: #0f1419;
    --ok-bg: #16311f;
    --ok-fg: #9be0ad;
    --ok-border: #2f6b41;
    --fail-bg: #3a1a1a;
    --fail-fg: #f1a4a4;
    --fail-border: #7d3434;
    --notice-bg: #3a2e12;
    --notice-fg: #f0d28a;
    --notice-border: #7a6224;
    --code-bg: #262b31;
    --unknown-bg: #3a2e12;
    --unknown-fg: #f0d28a;
    --unknown-border: #7a6224;
    --outside-bg: #252b33;
    --outside-fg: #b9c4d2;
    --outside-border: #4a5563;
  }
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0 auto;
  padding: 1.25rem 1rem 2.5rem;
  max-width: 58rem;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.5;
}

h1 { font-size: 1.6rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.05rem; margin: 1.5rem 0 0.5rem; }
p { margin: 0.5rem 0; }
code, pre { font-family: var(--mono); font-size: 0.9em; }
code { background: var(--code-bg); padding: 0.05em 0.3em; border-radius: 3px; }
pre {
  background: var(--code-bg);
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
a { color: var(--accent); }
.muted { color: var(--muted); font-weight: normal; }
.lede { margin: 0; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.panel {
  margin-top: 1.25rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.panel > h2:first-child { margin-top: 0; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  background: var(--bg);
}
.dropzone:focus-visible, .dropzone.dragover {
  border-color: var(--accent);
  outline: none;
}
.dropzone-title { font-weight: 600; margin: 0; }
.dropzone-hint { margin: 0.25rem 0 0; color: var(--muted); }
.file-note { margin: 0.5rem auto 0; max-width: 40rem; font-size: 0.9rem; color: var(--muted); }
.link-like { color: var(--accent); text-decoration: underline; cursor: pointer; }
.file-info { margin: 0.75rem 0 0; font-family: var(--mono); font-size: 0.85rem; overflow-wrap: anywhere; }
.file-info:empty { display: none; }

.field { margin-top: 1rem; }
.field label { display: block; font-weight: 600; margin-bottom: 0.25rem; }
.field input[type="text"] {
  width: 100%;
  padding: 0.5rem 0.6rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.field input[type="text"]:focus { border-color: var(--accent); outline: none; }
.field-inline { display: flex; align-items: flex-start; gap: 0.5rem; }
.field-inline label { font-weight: normal; margin: 0; }
.field-inline input { margin-top: 0.3rem; }
.field-error { color: var(--fail-fg); margin: 0.25rem 0 0; font-size: 0.9rem; }
.field-error:empty { display: none; }

.actions { margin-top: 1rem; display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
button {
  font: inherit;
  padding: 0.5rem 1.1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
}
button.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); font-weight: 600; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.secondary { font-size: 0.9rem; padding: 0.3rem 0.8rem; margin-bottom: 0.5rem; }
.status { color: var(--muted); }

.verdict {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.verdict.ok { background: var(--ok-bg); color: var(--ok-fg); border-color: var(--ok-border); }
.verdict.fail { background: var(--fail-bg); color: var(--fail-fg); border-color: var(--fail-border); }
.verdict.valid { background: var(--ok-bg); color: var(--ok-fg); border-color: var(--ok-border); }
.verdict.invalid { background: var(--fail-bg); color: var(--fail-fg); border-color: var(--fail-border); }
.verdict.incomplete { background: var(--unknown-bg); color: var(--unknown-fg); border-color: var(--unknown-border); }
.verdict-label { font-size: 1.4rem; font-weight: 700; letter-spacing: 0.02em; }
.verdict-summary { font-family: var(--mono); font-size: 0.9rem; word-break: break-word; }

.note {
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  background: var(--notice-bg);
  color: var(--notice-fg);
  border: 1px solid var(--notice-border);
}

.coverage { margin: 0; display: grid; gap: 0.5rem; }
.coverage div {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
}
.coverage dt { font-weight: 600; margin: 0 0 0.15rem; }
.coverage dd { margin: 0; color: var(--muted); font-size: 0.92rem; line-height: 1.5; }

.counters {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
  gap: 0.5rem;
}
.counters li {
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
}
.counters .count { font-size: 1.3rem; font-weight: 700; display: block; }
.counters .label { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); display: block; word-break: break-all; }
.counters li.hit.error { border-color: var(--fail-border); background: var(--fail-bg); color: var(--fail-fg); }
.counters li.hit.notice { border-color: var(--notice-border); background: var(--notice-bg); color: var(--notice-fg); }
.counters li.hit .label { color: inherit; }

.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.cards li {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: 6px;
  background: var(--bg);
}
.cards li.error { border-left-color: var(--fail-fg); }
.cards li.notice { border-left-color: var(--notice-fg); }
.cards .head { display: flex; flex-wrap: wrap; gap: 0.25rem 0.75rem; font-size: 0.85rem; color: var(--muted); }
.cards .head .cls { font-family: var(--mono); font-weight: 700; color: var(--fg); }
.cards li.error .head .cls { color: var(--fail-fg); }
.cards li.notice .head .cls { color: var(--notice-fg); }
.cards .msg { margin: 0.25rem 0 0; word-break: break-word; }
.cards dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 0.15rem 0.75rem; font-size: 0.9rem; }
.cards dt { color: var(--muted); }
.cards dd { margin: 0; font-family: var(--mono); word-break: break-all; }

.small { font-size: 0.9rem; }
.field select {
  font: inherit;
  font-size: 0.9rem;
  padding: 0.25rem 0.4rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  max-width: 100%;
}
.field-inline select { min-width: 0; flex: 0 1 auto; }

.badge {
  display: inline-block;
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}
.st-valid { --st-bg: var(--ok-bg); --st-fg: var(--ok-fg); --st-border: var(--ok-border); }
.st-invalid { --st-bg: var(--fail-bg); --st-fg: var(--fail-fg); --st-border: var(--fail-border); }
.st-unknown { --st-bg: var(--unknown-bg); --st-fg: var(--unknown-fg); --st-border: var(--unknown-border); }
.st-outside_scope { --st-bg: var(--outside-bg); --st-fg: var(--outside-fg); --st-border: var(--outside-border); }
.st-none { --st-bg: var(--bg); --st-fg: var(--muted); --st-border: var(--border); }
.badge[class*="st-"] { background: var(--st-bg); color: var(--st-fg); border-color: var(--st-border); }
.counters li.state-count.hit { background: var(--st-bg); color: var(--st-fg); border-color: var(--st-border); }
.counters li.state-count .label { font-family: var(--sans); font-weight: 600; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); }
table.records { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
table.records th, table.records td { padding: 0.35rem 0.6rem; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.records thead th { font-weight: 600; color: var(--muted); background: var(--panel); position: sticky; top: 0; }
table.records tbody tr:last-child td { border-bottom: none; }
table.records td.mono { font-family: var(--mono); word-break: break-all; }
table.records tr.row-invalid td:first-child { box-shadow: inset 4px 0 0 var(--fail-fg); }
table.records tr.row-unknown td:first-child { box-shadow: inset 4px 0 0 var(--unknown-fg); }
table.records tr.row-outside_scope td:first-child { box-shadow: inset 4px 0 0 var(--outside-fg); }

.raw-report { margin-top: 1.5rem; }
.raw-report summary { cursor: pointer; font-weight: 600; }

.explain p { color: var(--fg); }

.site-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 480px) {
  h1 { font-size: 1.35rem; }
  .cards dl { grid-template-columns: 1fr; }
  .cards dt { margin-top: 0.3rem; }
}