:root {
  --bg: #f4f5f7; --card: #fff; --text: #1f2933; --muted: #5f6b7a; --line: #dde1e6; --head: #1f2a37; --head-text: #e8edf3;
  --primary: #2563eb; --success: #15803d; --info: #0e7490; --danger: #b91c1c; --warn-bg: #fef3c7; --warn: #78350f;
  --ok-bg: #dcfce7; --ok: #14532d; --err-bg: #fee2e2; --err: #7f1d1d; --badge: #4b5563; --focus: #2563eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141a; --card: #171d25; --text: #e6eaef; --muted: #9aa5b1; --line: #2a333e; --head: #0b0f14; --head-text: #e6eaef;
    --primary: #3b82f6; --success: #16a34a; --info: #0891b2; --danger: #dc2626; --warn-bg: #3a2c0b; --warn: #fcd34d;
    --ok-bg: #0f2e1b; --ok: #86efac; --err-bg: #3b1212; --err: #fca5a5; --badge: #6b7280; --focus: #60a5fa;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--primary); }
code { font: 13px ui-monospace, SFMono-Regular, Menlo, monospace; }
h1 { font-size: 24px; font-weight: 600; margin: 0 0 12px; }
h2 { font-size: 16px; font-weight: 600; margin: 0 0 12px; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 24px; padding-bottom: 48px; }
.top { background: var(--head); color: var(--head-text); }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; flex-wrap: wrap; }
.brand { color: var(--head-text); text-decoration: none; font-size: 19px; font-weight: 600; }
.brand span { color: #60a5fa; }
nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
nav a, nav .link { color: var(--head-text); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-size: 14px; opacity: .85; }
nav a:hover, nav a.on, nav .link:hover { opacity: 1; background: rgba(255, 255, 255, .08); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin-bottom: 20px; }
.card.narrow { max-width: 440px; margin: 40px auto; }
.head-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.stack { display: grid; gap: 12px; }
.stack label { display: grid; gap: 4px; font-weight: 500; }
.grow { flex: 1 1 220px; }
.inline { display: inline; margin: 0; }
input, select { font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; min-height: 38px; }
input.search { max-width: 640px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.btn { font: inherit; font-size: 14px; display: inline-block; border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 6px; padding: 8px 14px; cursor: pointer; text-decoration: none; min-height: 38px; }
.btn.small { padding: 4px 10px; font-size: 13px; min-height: 30px; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.success { background: var(--success); border-color: var(--success); color: #fff; }
.btn.info { background: var(--info); border-color: var(--info); color: #fff; }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn:hover { filter: brightness(1.08); }
button.link { background: none; border: 0; font: inherit; cursor: pointer; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.ok-text { color: var(--success); }
.bad-text { color: var(--danger); }
.flash { border-radius: 6px; padding: 10px 14px; margin-bottom: 16px; }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.flash.error { background: var(--err-bg); color: var(--err); }
.flash.warn { background: var(--warn-bg); color: var(--warn); }
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
th { font-size: 13px; font-weight: 600; white-space: nowrap; }
th[data-sort] { cursor: pointer; }
th[data-sort]::after { content: " ↕"; color: var(--muted); }
th[data-dir="asc"]::after { content: " ↑"; }
th[data-dir="desc"]::after { content: " ↓"; }
td.actions { white-space: nowrap; }
td.actions > * { margin-right: 4px; }
.badge { display: inline-block; font-size: 12px; font-weight: 600; color: #fff; background: var(--badge); border-radius: 4px; padding: 1px 7px; }
.badge.on { background: var(--success); }
.badge.off { background: #92400e; }
.badge.bad { background: var(--danger); }
details.note summary { cursor: pointer; color: var(--muted); font-size: 13px; }
details.note[open] summary { margin-bottom: 6px; }
@media (max-width: 640px) { h1 { font-size: 20px; } .card.narrow { margin: 16px auto; } }