:root {
  --ground: #f5f6f8; --surface: #ffffff; --ink: #15171c; --muted: #5b6270;
  --line: #e2e5ea; --line-strong: #c9ced6; --accent: #1f4fd8; --accent-ink: #ffffff;
  --accent-soft: #e9eefc; --accent-deep: #163ba6; --ok: #0f6b3e; --ok-soft: #e3f4ea;
  --warn: #7a4700; --warn-soft: #fff4dc; --danger: #a12b1f; --danger-soft: #fbe9e7;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #111317; --surface: #1a1d23; --ink: #eceef2; --muted: #a3aab8;
    --line: #2a2e37; --line-strong: #3d4350; --accent: #7da2ff; --accent-ink: #0b1020;
    --accent-soft: #1c2a52; --accent-deep: #b9cbff; --ok: #6fd3a0; --ok-soft: #143325;
    --warn: #f2c574; --warn-soft: #3a2c10; --danger: #ff9a8f; --danger-soft: #3d1b17;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body { background: var(--ground); color: var(--ink); font: 14px/1.45 var(--sans); }
a { color: var(--accent); }
h1 { margin: 0; font-size: 26px; font-weight: 650; letter-spacing: -0.01em; }
h2 { margin: 0; font-size: 16px; font-weight: 600; }
h3 { margin: 0; font-size: 14px; font-weight: 600; }
p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); font-weight: 600; }
.loading { padding: 48px; text-align: center; color: var(--muted); }
.wrap { overflow-wrap: anywhere; }

.shell { min-height: 100vh; display: flex; flex-wrap: wrap; }
.nav { flex: 1 1 220px; padding: 24px 16px; background: var(--surface); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 4px; }
.brand { font-size: 20px; font-weight: 650; padding: 0 12px 20px; }
.logo { vertical-align: -6px; margin-right: 10px; border-radius: 7px; }
.nav a { display: flex; justify-content: space-between; align-items: center; min-height: 44px; padding: 0 12px;
  border-radius: 8px; color: var(--ink); text-decoration: none; }
.nav a:hover { background: var(--ground); }
.nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-deep); font-weight: 600; }
.nav .who { margin-top: auto; padding: 16px 12px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.main { flex: 999 1 560px; min-width: 0; display: flex; flex-wrap: wrap; align-content: flex-start; }
.page { flex: 999 1 420px; min-width: 0; padding: 24px; display: flex; flex-direction: column; gap: 20px; }
.aside { flex: 1 1 380px; min-width: 0; padding: 24px; background: var(--surface); border-left: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 16px; min-height: 100vh; }
@media (max-width: 760px) {
  .shell { flex-direction: column; flex-wrap: nowrap; }
  .main { flex: 1 1 auto; }
  .nav { flex: none; flex-direction: row; flex-wrap: nowrap; align-items: center; overflow-x: auto; padding: 8px;
    border-right: 0; border-bottom: 1px solid var(--line); }
  .brand { padding: 0 12px; font-size: 18px; }
  .nav a { flex: none; }
  .nav .who { display: none; }
  .page, .aside { padding: 16px; }
  .aside { min-height: 0; border-left: 0; border-top: 1px solid var(--line); }
  .code-big { font-size: 38px; }
}

.card { padding: 20px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 12px; }
.card.fresh { border: 2px solid var(--accent); }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.row.between { justify-content: space-between; }
.row.end { align-items: flex-end; }
.grow { flex: 1 1 auto; min-width: 0; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.tile { padding: 12px; border-radius: 8px; background: var(--ground); }
.columns { display: flex; flex-wrap: wrap; gap: 20px; align-items: flex-start; }
.columns > * { flex: 1 1 320px; min-width: 0; }

button, .button { min-height: 44px; padding: 0 16px; border: 1px solid var(--line-strong); border-radius: 8px;
  background: var(--surface); color: var(--ink); font: inherit; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }
button:hover, .button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.danger { color: var(--danger); }
button.plain { border: 0; background: transparent; color: var(--accent); padding: 0 4px; }
button:disabled { opacity: 0.55; cursor: default; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

label.field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); flex: 1 1 160px; }
input[type="text"], input[type="search"], input[type="number"], select {
  min-height: 44px; padding: 0 12px; border: 1px solid var(--line-strong); border-radius: 8px;
  font: inherit; font-size: 14px; background: var(--surface); color: var(--ink); width: 100%; }
label.check { display: flex; align-items: center; gap: 10px; min-height: 44px; }
label.check input { width: 18px; height: 18px; flex: none; }
fieldset { margin: 0; padding: 0; border: 0; }
legend { padding: 0 0 4px; color: var(--muted); font-size: 13px; }

.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; white-space: nowrap; }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.off { background: var(--line); color: var(--muted); }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.notice { padding: 12px 14px; border-radius: 8px; font-size: 13px; }
.notice.warn { background: var(--warn-soft); color: var(--warn); }
.notice.danger { background: var(--danger-soft); color: var(--danger); }
.notice.ok { background: var(--ok-soft); color: var(--ok); }

.code-big { font-family: var(--mono); font-weight: 600; font-size: 44px; letter-spacing: 0.06em; overflow-wrap: anywhere; }
.code-mid { font-family: var(--mono); font-weight: 600; font-size: 20px; color: var(--muted); white-space: nowrap; }
.section-label { font-size: 13px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.list { border-radius: 12px; background: var(--surface); border: 1px solid var(--line); overflow: hidden; }
.item { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.item:last-child { border-bottom: 0; }
.item.selected { background: var(--accent-soft); }
.item.stale .code-mid, .item.stale .title { color: var(--muted); }
.item .open { all: unset; cursor: pointer; flex: 1 1 200px; min-width: 0; }
.item .open:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.title { font-weight: 600; }
.empty { padding: 32px 16px; text-align: center; color: var(--muted); }

dl.facts { margin: 0; display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 6px 12px; font-size: 13px; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; overflow-wrap: anywhere; }
.body { padding: 16px; border-radius: 8px; background: var(--ground); max-height: 480px; overflow: auto; }
.md { font-size: 14px; line-height: 1.55; overflow-wrap: anywhere; }
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p, .md ul, .md ol, .md blockquote, .md pre { margin: 0 0 12px; }
.md h3, .md h4, .md h5, .md h6 { margin: 16px 0 8px; font-weight: 600; line-height: 1.3; }
.md h3 { font-size: 18px; } .md h4 { font-size: 16px; } .md h5, .md h6 { font-size: 14px; }
.md ul, .md ol { padding-left: 22px; }
.md li { margin: 2px 0; }
.md blockquote { padding-left: 12px; border-left: 3px solid var(--line-strong); color: var(--muted); }
.md code { font-family: var(--mono); font-size: 13px; background: var(--surface); padding: 1px 4px; border-radius: 4px; }
.md pre { padding: 12px; border-radius: 8px; background: var(--surface); overflow-x: auto; }
.md pre code { padding: 0; background: none; }
.md hr { border: 0; border-top: 1px solid var(--line-strong); margin: 16px 0; }

.tablebox { overflow-x: auto; }
table { width: 100%; min-width: 520px; border-collapse: collapse; }
th { text-align: left; padding: 8px; font-size: 12px; font-weight: 600; color: var(--muted); }
td { padding: 10px 8px; border-top: 1px solid var(--line); vertical-align: middle; }
th:first-child, td:first-child { padding-left: 0; }
td.actions { text-align: right; white-space: nowrap; }
td.actions button { margin-left: 6px; }

.auth { min-height: 100vh; padding: 48px 24px; display: flex; flex-direction: column; align-items: center; gap: 32px; }
.auth .cards { width: 100%; max-width: 760px; display: flex; flex-wrap: wrap; gap: 20px; align-items: flex-start; }
.auth .cards > * { flex: 1 1 300px; min-width: 0; padding: 24px; }
.codes-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding: 16px;
  border-radius: 8px; background: var(--ground); font-family: var(--mono); font-weight: 600; }
.qr { width: 240px; height: 240px; border-radius: 8px; background: #ffffff; padding: 8px; align-self: center; }

dialog { border: 1px solid var(--line-strong); border-radius: 12px; padding: 24px; background: var(--surface);
  color: var(--ink); width: min(560px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(10, 12, 16, 0.5); }
#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 10; }
.toast { padding: 12px 16px; border-radius: 10px; background: var(--ink); color: var(--ground); font-weight: 600;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25); max-width: 340px; }
.toast.error { background: var(--danger); color: #ffffff; }