:root {
  --bg: #f6f7f8; --surface: #fff; --text: #1a1c1e; --muted: #5f6670; --border: #d8dce0;
  --accent: #3a7d44; --accent-text: #fff; --danger: #b3261e; --warn-bg: #fff4d6; --ok: #2e7d32; --bad: #b3261e;
  --flash-bg: #e7f3e9;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121416; --surface: #1c1f22; --text: #e6e8ea; --muted: #9aa1a9; --border: #33383d;
    --accent: #5aa065; --accent-text: #0d1a10; --danger: #ef6b62; --warn-bg: #3a3020; --ok: #7bc47f; --bad: #ef6b62;
    --flash-bg: #1f3324;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }  /* the display rules below would otherwise show hidden fields */
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); }
header nav { display: flex; flex-wrap: wrap; gap: 4px 14px; flex: 1; }
header nav a { color: var(--muted); text-decoration: none; }
header nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
.brand { margin-right: 8px; }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.5rem; margin: 8px 0 16px; }
h2 { font-size: 1.1rem; margin: 0 0 10px; }
dl + h2, dl + table, details { margin-top: 16px; }
details { margin-bottom: 12px; }
form button + a { margin-left: 12px; }
a { color: var(--accent); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 16px; }
.narrow { max-width: 420px; margin-left: auto; margin-right: auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-bottom: 16px; }
.grid .card { margin: 0; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; overflow-wrap: anywhere; }
label { display: block; margin-bottom: 12px; }
input, select, textarea { display: block; width: 100%; margin-top: 4px; padding: 7px 9px; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 6px; }
textarea { font-family: ui-monospace, monospace; }
button { font: inherit; padding: 7px 14px; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-text); cursor: pointer; }
button.secondary { background: transparent; color: var(--text); border-color: var(--border); }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.link { background: none; border: none; color: var(--accent); padding: 0; text-decoration: underline; }
form.inline { display: inline; }
form.inline input, form.inline select, .row-actions select, .toolbar input, .toolbar select { display: inline-block; width: auto; margin: 0 4px 0 0; }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 12px; }
.toolbar label { margin: 0; }
.spacer { flex: 1; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 8px; }
.row-actions form { display: flex; flex-wrap: wrap; gap: 6px; }
.row-actions button { padding: 4px 9px; font-size: 0.9em; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--border); }
thead th { color: var(--muted); font-weight: 600; font-size: 0.9em; }
table.compact { width: auto; }
table.config th { width: 30%; font-weight: 500; }
tr.readonly { color: var(--muted); }
tr.bad-row td { color: var(--bad); }
.grid-marks { margin: 0; line-height: 1.1; font-size: 0.8em; }
.status.verified { color: var(--ok); }
.status.mismatch, .status.no_starter { color: var(--bad); }
.status.pending { color: var(--muted); }
.ok { color: var(--ok); }
.bad { color: var(--bad); }
.muted { color: var(--muted); }
.error { background: var(--warn-bg); border-left: 4px solid var(--danger); padding: 8px 12px; border-radius: 4px; }
.flash { background: var(--flash-bg); border-left: 4px solid var(--accent); padding: 8px 12px; border-radius: 4px; }
.spoiler { background: var(--text); color: transparent; border-radius: 3px; padding: 0 4px; cursor: pointer; }
.spoiler:hover, .spoiler:focus { background: transparent; color: inherit; }
.qr { display: flex; justify-content: center; margin: 12px 0; }
.qr svg { background: #fff; padding: 8px; border-radius: 6px; max-width: 100%; height: auto; }
.secret { overflow-wrap: anywhere; }
ul.plain { list-style: none; padding: 0; margin: 0 0 8px; }
code { font-family: ui-monospace, monospace; }