:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f1f3f6;
  --border: #e2e5ea;
  --text: #15181d;
  --muted: #646b76;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --ok: #15803d;
  --ok-bg: #dcfce7;
  --warn: #a16207;
  --warn-bg: #fef9c3;
  --bad: #b91c1c;
  --bad-bg: #fee2e2;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 2px 8px rgba(0, 0, 0, .04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a20;
    --surface-2: #1f232b;
    --border: #2b3039;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --accent: #5b8cff;
    --accent-text: #0b1020;
    --ok: #4ade80;
    --ok-bg: #12301f;
    --warn: #facc15;
    --warn-bg: #33290b;
    --bad: #f87171;
    --bad-bg: #3a1515;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
[hidden] { display: none !important; }
h1, h2, h3 { margin: 0; line-height: 1.25; }
h1 { font-size: 22px; }
h2 { font-size: 17px; }
h3 { font-size: 14px; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12.5px; }
.muted { color: var(--muted); }
.error { color: var(--bad); margin: 0; }
a { color: var(--accent); }

button, input, select, textarea { font: inherit; color: inherit; }
button {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  white-space: nowrap;
}
button:hover { background: var(--surface-2); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.primary:hover { filter: brightness(1.08); }
button.danger { color: var(--bad); }
button.ghost { border-color: transparent; background: transparent; }
button.small { padding: 3px 9px; font-size: 13px; }
button:disabled { opacity: .55; cursor: default; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  padding: 7px 10px;
}
textarea { min-height: 72px; resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
label { display: block; font-weight: 500; margin-bottom: 12px; }
label > input, label > select, label > textarea { margin-top: 4px; font-weight: 400; }
.hint { font-weight: 400; font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.check { display: flex; align-items: center; gap: 8px; font-weight: 400; margin-bottom: 6px; }
.check input { width: auto; margin: 0; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(360px, 100%); padding: 28px; }
.login-card h1 { margin-bottom: 2px; }
.login-card .muted { margin: 0 0 18px; }
.login-card button { width: 100%; margin-top: 6px; }

.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 15px; }
.tabs { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.tabs button { border-color: transparent; background: transparent; color: var(--muted); font-weight: 500; }
.tabs button.active { background: var(--surface-2); color: var(--text); }
main { max-width: 1180px; margin: 0 auto; padding: 22px 20px 60px; }

.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 14px; flex-wrap: wrap; }
.section-head .actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.section-head select { width: auto; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.stack > * + * { margin-top: 20px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.stat { padding: 14px 16px; }
.stat .label { color: var(--muted); font-size: 12.5px; }
.stat .value { font-size: 24px; font-weight: 650; font-variant-numeric: tabular-nums; }

.pc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }
.pc { padding: 16px; }
.pc .row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.pc .models { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 4px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.actions { white-space: nowrap; text-align: right; }
td.actions button + button { margin-left: 4px; }
.empty { padding: 28px; text-align: center; color: var(--muted); }

.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-2); color: var(--muted); }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.chip { display: inline-block; padding: 1px 7px; border-radius: 6px; background: var(--surface-2); border: 1px solid var(--border); font-size: 12px; }
button.chip { cursor: pointer; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--muted); margin-right: 6px; }
.dot.ok { background: var(--ok); }
.dot.bad { background: var(--bad); }

dialog {
  border: 1px solid var(--border); border-radius: 14px; padding: 0;
  background: var(--surface); color: var(--text);
  width: min(560px, calc(100vw - 32px)); max-height: calc(100vh - 40px);
}
dialog::backdrop { background: rgba(0, 0, 0, .45); }
.dlg { padding: 22px; }
.dlg h2 { margin-bottom: 16px; }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px 6px; margin: 0 0 12px; }
legend { font-weight: 500; padding: 0 4px; }

.secret {
  display: flex; gap: 8px; align-items: stretch;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 8px;
}
.secret code { flex: 1; word-break: break-all; align-self: center; }
.callout { padding: 10px 12px; border-radius: 8px; background: var(--warn-bg); color: var(--warn); margin: 12px 0; font-size: 13px; }
.howto { padding: 16px; }
.howto pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; overflow-x: auto; margin: 8px 0 0; }

.pager { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; border-top: 1px solid var(--border); }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 9px 16px; border-radius: 8px; z-index: 50; box-shadow: var(--shadow);
}

@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; padding: 10px 16px; gap: 8px; }
  .tabs { order: 3; width: 100%; flex: none; }
  main { padding: 16px 16px 48px; }
  .grid-2 { grid-template-columns: 1fr; }
  th, td { padding: 8px; }
}

button.primary.danger-bg { background: var(--bad); border-color: var(--bad); color: #fff; }