/* casterd admin UI. Deliberately plain: one stylesheet, no framework, no CDN. */
:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #1c2024;
  --muted: #6b7280;
  --line: #dfe3e8;
  --ok: #10794a;
  --warn: #9a6400;
  --bad: #b32020;
  --accent: #1c4f9c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a; --panel: #1c2024; --ink: #e6e8eb; --muted: #9aa3ad;
    --line: #2c3238; --ok: #4ac088; --warn: #d69d2c; --bad: #e06666; --accent: #6ea8fe;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 1200px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
h1 { font-size: 1.4rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 .6rem; border-bottom: 1px solid var(--line); padding-bottom: .3rem; }
a { color: var(--accent); }

.topbar {
  display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap;
  padding: .7rem 1rem; background: var(--panel); border-bottom: 1px solid var(--line);
}
.topbar .brand { font-weight: 700; text-decoration: none; color: var(--ink); }
.topbar nav { display: flex; gap: 1rem; }
.topbar nav a { text-decoration: none; color: var(--muted); }
.topbar nav a.on, .topbar nav a:hover { color: var(--ink); }
.topbar .right { margin-left: auto; display: flex; align-items: center; gap: .8rem; }
footer { max-width: 1200px; margin: 0 auto; padding: 0 1rem 2rem; font-size: .85rem; }

.muted { color: var(--muted); }
.bad { color: var(--bad); font-weight: 600; }
.note { display: block; font-size: .8rem; }

.flash { padding: .6rem .8rem; border-radius: 6px; margin-bottom: 1rem; border: 1px solid var(--line); }
.flash.ok { border-color: var(--ok); color: var(--ok); }
.flash.err { border-color: var(--bad); color: var(--bad); }
.flash.warn-box { border-color: var(--warn); color: var(--warn); }
.flash ul { margin: .4rem 0 0 1rem; padding: 0; }

.cards { display: flex; flex-wrap: wrap; gap: .7rem; margin-bottom: 1.2rem; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: .6rem .9rem; min-width: 8.5rem;
}
.card .k { display: block; font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.card .v { display: block; font-size: 1.35rem; font-variant-numeric: tabular-nums; }

table { width: 100%; border-collapse: collapse; background: var(--panel);
  border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
th, td { text-align: left; padding: .45rem .6rem; border-bottom: 1px solid var(--line);
  vertical-align: top; font-variant-numeric: tabular-nums; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
tbody tr:last-child td { border-bottom: none; }
table.small { font-size: .85rem; }
table.kv th { width: 14rem; }
tr.missing { background: color-mix(in srgb, var(--warn) 12%, transparent); }
td.warn { color: var(--warn); font-size: .82rem; }

.state { display: inline-block; padding: .05rem .45rem; border-radius: 10px;
  font-size: .78rem; border: 1px solid currentColor; }
.state.online { color: var(--ok); }
.state.stale { color: var(--warn); }
.state.offline { color: var(--muted); }
.state.disabled { color: var(--bad); }

form.inline { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .8rem;
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: .8rem; }
form.grid fieldset { background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  margin: 0 0 1rem; padding: .8rem 1rem 1rem; display: grid;
  grid-template-columns: 14rem 1fr; gap: .45rem .8rem; align-items: center; }
form.grid legend { font-weight: 600; padding: 0 .3rem; }
label { color: var(--muted); font-size: .9rem; }
input, select, button {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 6px; padding: .35rem .5rem;
}
input[type=checkbox] { width: 1rem; height: 1rem; justify-self: start; }
button { cursor: pointer; background: var(--panel); }
button:hover { border-color: var(--accent); }
button.danger { color: var(--bad); border-color: var(--bad); }
button.link { border: none; background: none; color: var(--accent); padding: 0; }
.actions form { display: inline; }
.row { display: flex; gap: .8rem; flex-wrap: wrap; margin: 1rem 0; }
ul.plain { list-style: none; padding: 0; margin: .3rem 0; }

main.login { max-width: 22rem; margin: 12vh auto; }
main.login form { display: grid; gap: .4rem; background: var(--panel);
  border: 1px solid var(--line); border-radius: 8px; padding: 1.2rem; }
main.login button { margin-top: .6rem; padding: .5rem; }