:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1c2128;
  --muted: #646d78;
  --border: #d9dde3;
  --accent: #3366cc;
  --ok: #2ea043;
  --warn: #d4952a;
  --crit: #d83c3e;
  --offline: #8a3ffc;
  --new: #6e7781;
  --bar: #c5ccd6;
  --shadow: 0 1px 2px rgba(0, 0, 0, .06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --text: #e3e6ea;
    --muted: #8b949e;
    --border: #2b313a;
    --accent: #6c9cff;
    --bar: #39414d;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
h1 { font-size: 1.5rem; margin: 0 0 .5rem; }
h2 { font-size: 1.1rem; margin: 0 0 .5rem; }
h3 { font-size: .95rem; margin: 1rem 0 .25rem; color: var(--muted); font-weight: 600; }
code { font-size: .9em; }

.top {
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
  padding: .6rem 16px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.top nav { display: flex; gap: 1rem; }
.top nav a { text-decoration: none; color: var(--muted); }
.top nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.order-setting { margin-bottom: .75rem; }
th.order, td.order { width: 4.5rem; white-space: nowrap; }
form.move { display: inline-flex; gap: .2rem; }
form.move button { padding: .1rem .45rem; line-height: 1.2; }
form.move button:disabled { opacity: .35; cursor: default; }
.who { margin-left: auto; display: flex; gap: .6rem; align-items: center; color: var(--muted); font-size: .9rem; }
main { max-width: 1400px; margin: 0 auto; padding: 1rem 16px 3rem; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 1rem; margin-bottom: 1rem; box-shadow: var(--shadow);
}
.narrow { max-width: 520px; margin: 3rem auto; }
.wide-ish { max-width: 760px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.error { color: var(--crit); }

button, .button, select, input, textarea {
  font: inherit; color: inherit; background: var(--surface);
  border: 1px solid var(--border); border-radius: 6px; padding: .35rem .7rem;
}
button, .button { cursor: pointer; text-decoration: none; display: inline-block; }
button:hover, .button:hover { border-color: var(--accent); }
.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.danger { color: var(--crit); }
button.link { border: 0; background: none; color: var(--accent); padding: 0; }
form.inline { display: inline-flex; gap: .3rem; align-items: center; margin: .1rem 0; }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }

.badge {
  display: inline-block; padding: .05rem .5rem; border-radius: 999px; font-size: .75rem;
  font-weight: 600; text-transform: uppercase; letter-spacing: .03em; color: #fff; background: var(--new);
}
.badge.ok { background: var(--ok); }
.badge.warn { background: var(--warn); }
.badge.crit { background: var(--crit); }
.badge.offline { background: var(--offline); }
.badge.revoked { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.badge.muted-badge { background: transparent; color: var(--muted); border: 1px dashed var(--muted); }

.summary { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin-bottom: .75rem; }
/* 230 px minimum: five cards per row from about 1280 px wide, fewer on smaller screens. */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); gap: .75rem; }
.machine { display: block; color: inherit; text-decoration: none; margin: 0; padding: .6rem .75rem; border-left: 4px solid var(--new); }
.machine:hover { border-color: var(--accent); }
.machine.status-ok { border-left-color: var(--ok); }
.machine.status-warn { border-left-color: var(--warn); }
.machine.status-crit { border-left-color: var(--crit); }
.machine.status-offline { border-left-color: var(--offline); opacity: .85; }
.machine .head { display: flex; gap: .4rem; align-items: center; }
.machine .head h2 { margin: 0; margin-right: auto; overflow-wrap: anywhere; font-size: 1rem; }
.machine .sub { font-size: .78rem; margin-top: .1rem; }
.machine .readings { margin: .35rem 0 .3rem; gap: .5rem; }
.machine .readings dd { font-size: 1rem; display: flex; align-items: center; gap: .4rem; }
.machine .readings dd .spark { flex: 1; min-width: 0; height: 18px; }
.machine .disk { margin: .1rem 0; font-size: .82rem; grid-template-columns: 1.6rem 1fr auto; gap: .4rem; }
.machine .disk .bar { height: 6px; }
.machine .alerts { font-size: .78rem; margin-top: .35rem; }
.machine .alerts li { padding: .1rem 0 .1rem .5rem; margin-bottom: .1rem; }

.readings { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; margin: .6rem 0; }
.readings.wide { grid-template-columns: repeat(3, 1fr); }
.readings dt { font-size: .72rem; color: var(--muted); text-transform: uppercase; }
.readings dd { margin: 0; font-size: 1.2rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.spark { width: 100%; height: 28px; display: block; }
.spark polyline { fill: none; stroke: var(--accent); stroke-width: 1.5; vector-effect: non-scaling-stroke; }

.disk { display: grid; grid-template-columns: 2rem 1fr auto; gap: .5rem; align-items: center; margin: .3rem 0; font-size: .9rem; }
.disk .drive { font-weight: 600; }
.disk .bar { height: 8px; background: var(--bar); border-radius: 4px; overflow: hidden; }
.disk .bar span { display: block; height: 100%; background: var(--ok); }
.disk.level-warn .bar span { background: var(--warn); }
.disk.level-crit .bar span { background: var(--crit); }
.disk .free { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.disk .missing { color: var(--crit); grid-column: span 2; }

.alerts { list-style: none; padding: 0; margin: .5rem 0 0; font-size: .88rem; }
.alerts li { padding: .2rem 0 .2rem .6rem; border-left: 3px solid var(--warn); margin-bottom: .2rem; }
.alerts li.level-crit { border-left-color: var(--crit); }

.page-head { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.page-head h1 { margin: 0; }
.page-head form { margin-left: auto; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.cols .card { margin: 0; }
.charts { margin-top: 1rem; }
.chart { position: relative; height: 220px; }
.ranges { display: flex; gap: .3rem; flex-wrap: wrap; }
.ranges button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }

table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; }
td.actions { white-space: normal; }
.rename summary { color: var(--muted); cursor: pointer; }

.copyrow { display: flex; gap: .5rem; align-items: stretch; margin: .3rem 0 1rem; }
.copyrow input, .copyrow textarea { flex: 1; min-width: 0; font-family: ui-monospace, Consolas, monospace; font-size: .85rem; }
.copyrow textarea { resize: vertical; }

.notice { color: var(--ok); }
.notice-warn { color: var(--warn); margin: 0 0 .75rem; }
.limit-groups { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 1rem; margin: .75rem 0; }
fieldset.limits { border: 1px solid var(--border); border-radius: 6px; padding: .5rem .75rem; margin: 0; min-width: 0; }
fieldset.limits.customised { border-color: var(--accent); }
fieldset.limits legend { font-weight: 600; padding: 0 .3rem; }
table.limits th { color: var(--text); font-weight: normal; font-size: .88rem; }
table.limits td, table.limits th { border: 0; padding: .2rem .3rem; vertical-align: middle; }
table.limits td.value { white-space: nowrap; }
table.limits input { width: 6.5rem; text-align: right; }
table.limits input::placeholder { color: var(--muted); opacity: .8; }
table.limits .unit { color: var(--muted); font-size: .85rem; }
table.limits tr.invalid input { border-color: var(--crit); }

@media (max-width: 760px) {
  .cols { grid-template-columns: 1fr; }
  .readings.wide { grid-template-columns: 1fr 1fr; }
  .page-head form { margin-left: 0; }
  table.admin thead { display: none; }
  table.admin tr { display: block; border-bottom: 1px solid var(--border); padding: .5rem 0; }
  table.admin td { display: block; border: 0; padding: .15rem 0; }
  table.history td:nth-child(4) { display: none; }
}