:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1d2330;
  --muted: #667085;
  --border: #e3e6eb;
  --accent: #1a5fb4;
  --accent-text: #ffffff;
  --danger: #b42318;
  --ok-bg: #ecfdf3;
  --ok-text: #05603a;
  --err-bg: #fef3f2;
  --err-text: #b42318;
  --warn-bg: #fffaeb;
  --code-bg: #f2f4f7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b;
    --card: #1b1f27;
    --text: #e6e8ec;
    --muted: #98a2b3;
    --border: #2d333d;
    --accent: #5b9bf0;
    --accent-text: #0b0d11;
    --danger: #f97066;
    --ok-bg: #0b2b1c;
    --ok-text: #75e0a7;
    --err-bg: #3a1513;
    --err-text: #fda29b;
    --warn-bg: #33270b;
    --code-bg: #252a33;
  }
}
* { box-sizing: border-box; }
/* Components set display:flex/grid, which would otherwise override the hidden attribute. */
[hidden] { display: none !important; }
body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 64px; }
a { color: var(--accent); }
h1 { font-size: 26px; margin: 8px 0 4px; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 16px 0 6px; }
.top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px; margin: 20px 0;
}
.card.narrow { max-width: 380px; margin: 12vh auto; }
.muted { color: var(--muted); }
.flash { padding: 10px 14px; border-radius: 8px; background: var(--ok-bg); color: var(--ok-text); margin: 12px 0; }
.flash.error { background: var(--err-bg); color: var(--err-text); }
.warn { padding: 10px 14px; border-radius: 8px; background: var(--warn-bg); }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; }
table.compact td, table.compact th { padding: 6px 8px; }
tr.excluded td { opacity: 0.55; }
.scroll { max-height: 480px; overflow: auto; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 600; }
label.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 400; font-size: 15px; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px; padding: 7px 9px; font-weight: 400;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
button, .button {
  font: inherit; font-weight: 600; cursor: pointer; display: inline-block; text-decoration: none;
  background: var(--accent); color: var(--accent-text); border: 0; border-radius: 6px; padding: 8px 14px;
}
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.danger { background: var(--danger); }
button.link { background: none; color: var(--accent); padding: 0; font-weight: 400; }
button.link.danger { color: var(--danger); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.grid .full { grid-column: 1 / -1; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.row { display: flex; gap: 10px; }
form.inline { margin-bottom: 12px; }
code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; font-size: 13px; word-break: break-all; }
code.copy { cursor: copy; }
pre { white-space: pre-wrap; background: var(--code-bg); padding: 10px; border-radius: 6px; font-size: 13px; }
.tag { font-size: 12px; background: var(--code-bg); border-radius: 999px; padding: 1px 8px; font-weight: 400; }
.status { font-size: 12px; border-radius: 999px; padding: 1px 8px; background: var(--code-bg); }
.status.ok { background: var(--ok-bg); color: var(--ok-text); }
.status.error, .status.partial { background: var(--err-bg); color: var(--err-text); }
.modes dt { font-weight: 600; margin-top: 10px; }
.modes dd { margin: 2px 0 0; color: var(--muted); }
.thumb { max-width: 120px; max-height: 48px; }
.editor { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 24px; }
.editor aside { display: flex; flex-direction: column; gap: 10px; }
iframe.preview { width: 100%; min-height: 220px; border: 1px solid var(--border); border-radius: 8px; background: #fff; }
.fields td { padding: 3px 6px; }
.danger-zone { border-color: var(--danger); }
@media (max-width: 800px) { .editor { grid-template-columns: 1fr; } }
button.secondary { background: var(--code-bg); color: var(--text); }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; }
legend { font-size: 13px; font-weight: 600; padding: 0 6px; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 4px 16px; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; }
@media (max-width: 800px) { .editor aside { order: -1; } }
.import-panel { border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; }
.import-panel summary { cursor: pointer; font-weight: 600; }
.import-box { display: flex; flex-direction: column; gap: 10px; margin-top: 10px; }
.paste-zone {
  border: 2px dashed var(--border); border-radius: 10px; padding: 18px; text-align: center;
  cursor: text; caret-color: transparent; outline: none; display: flex; flex-direction: column; gap: 6px;
}
.paste-zone:focus, .paste-zone.over { border-color: var(--accent); background: var(--code-bg); }
.paste-zone.busy { opacity: 0.6; }
.inline-file { display: inline; font-size: inherit; font-weight: 400; color: var(--accent); text-decoration: underline; cursor: pointer; }
.error-text { color: var(--err-text); }
ul.missing { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 8px; }
ul.missing li span { display: block; }

.top nav { display: flex; align-items: center; gap: 16px; }
.top nav a { text-decoration: none; }
.card.attention { border-color: var(--danger); }
.card.narrow.wide { max-width: 560px; }
.checklist ol { margin: 0; padding-left: 20px; }
.checklist li.done { color: var(--muted); }
.copy-block { position: relative; }
.copy-block button { position: absolute; top: 6px; right: 6px; padding: 4px 10px; font-size: 13px; }
.copy-block pre { padding-top: 36px; max-height: 360px; overflow: auto; white-space: pre; }
.inline-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px; margin-top: 12px; }
.inline-form label { flex-direction: row; align-items: center; gap: 8px; font-weight: 400; font-size: 15px; }
input.short { width: 80px; }
.wide-button { width: 100%; padding: 12px; }
details.advanced { margin-top: 14px; }
details.advanced > summary, details > summary { cursor: pointer; color: var(--accent); }