/* Deliberately one small stylesheet with no build step. The single-binary goal
   rules out a JS toolchain, and nothing here needs one. */
:root {
  color-scheme: light dark;
  --bg: #fbfbfa;
  --fg: #1c1c1a;
  --muted: #6b6b66;
  --line: #e3e3df;
  --card: #ffffff;
  --accent: #2f5d50;
  --ok: #2f7a4f;
  --warn: #9a6b1f;
  --bad: #a33a32;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181a; --fg: #e8e8e4; --muted: #9a9a93; --line: #2c2e31;
    --card: #1e2022; --accent: #7fb3a2; --ok: #6fbd8c; --warn: #d6a44e; --bad: #e07b72;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.55 ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }
header { border-bottom: 1px solid var(--line); margin-bottom: 2rem; padding-bottom: 1.25rem; }
h1 { font-size: 1.5rem; margin: 0 0 .25rem; letter-spacing: -.01em; }
h2 { font-size: 1.05rem; margin: 2.25rem 0 .75rem; letter-spacing: -.005em; }
.sub { color: var(--muted); margin: 0; }
nav { margin-top: .75rem; display: flex; gap: 1rem; flex-wrap: wrap; }
nav a { color: var(--accent); text-decoration: none; font-size: .9rem; }
nav a:hover { text-decoration: underline; }
table { width: 100%; border-collapse: collapse; font-size: .875rem; background: var(--card);
        border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
th, td { text-align: left; padding: .5rem .7rem; border-bottom: 1px solid var(--line); }
th { font-weight: 600; color: var(--muted); font-size: .78rem; text-transform: uppercase;
     letter-spacing: .04em; }
tr:last-child td { border-bottom: none; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85em; }
pre { background: var(--card); border: 1px solid var(--line); border-radius: 6px;
      padding: .9rem 1rem; overflow-x: auto; }
.state { font-weight: 600; font-size: .8rem; }
.state-ready, .state-active { color: var(--ok); }
.state-pending, .state-starting, .state-draining, .state-cordoned { color: var(--warn); }
.state-failed, .state-lost, .state-unreachable, .state-revoked { color: var(--bad); }
.empty { color: var(--muted); font-style: italic; padding: .9rem 0; }
.note { color: var(--muted); font-size: .85rem; margin: .4rem 0 0; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line);
         color: var(--muted); font-size: .8rem; display: flex; justify-content: space-between; gap: 1rem; }
button {
  font: inherit; font-weight: 600; cursor: pointer;
  background: var(--accent); color: var(--bg); border: none;
  border-radius: 6px; padding: .55rem 1.1rem;
}
button:hover { filter: brightness(1.1); }
ul { padding-left: 1.2rem; }
li { margin: .25rem 0; }
a { color: var(--accent); }
.wrap.narrow { max-width: 30rem; }
label { display: block; margin: .9rem 0; font-size: .9rem; font-weight: 600; }
input[type=text], input[type=email], input[type=password] {
  display: block; width: 100%; margin-top: .3rem; font: inherit; font-weight: 400;
  padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 6px;
  background: var(--card); color: var(--fg);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.error { color: var(--bad); border: 1px solid var(--bad); border-radius: 6px;
         padding: .6rem .8rem; background: var(--card); }
form.inline { display: inline; }
button.link { background: none; color: var(--accent); padding: 0;
              text-decoration: underline; font-weight: 400; font-size: .9rem; }
button.link.danger { color: var(--bad); }
.ok { color: var(--ok); border: 1px solid var(--ok); border-radius: 6px;
      padding: .6rem .8rem; background: var(--card); }
select { font: inherit; padding: .35rem .4rem; border: 1px solid var(--line);
         border-radius: 6px; background: var(--card); color: var(--fg); }
.chart-wrap { position: relative; margin: .5rem 0 1.5rem; }
.chart { width: 100%; height: 120px; display: block;
         background: var(--card); border: 1px solid var(--line); border-radius: 6px; }
.chart rect { transition: opacity .1s; }
.chart rect:hover { opacity: .65; }
.chart .axis { stroke: var(--line); stroke-width: 1; }
.chart-peak { position: absolute; top: .4rem; right: .6rem;
              font-size: .72rem; color: var(--muted); }
.chart-row { display: grid; gap: 1rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 720px) { .chart-row { grid-template-columns: 1fr; } }
.chat-bar { display: flex; align-items: center; gap: 1rem; margin-bottom: .75rem; }
.inline-label { font-size: .85rem; font-weight: 600; margin: 0; }
.inline-label select { margin-left: .4rem; font-weight: 400; }
.chat-log { min-height: 16rem; max-height: 55vh; overflow-y: auto; padding: .5rem;
            background: var(--card); border: 1px solid var(--line); border-radius: 6px; }
.bubble { white-space: pre-wrap; word-wrap: break-word; padding: .55rem .75rem;
          margin: .4rem 0; border-radius: 8px; max-width: 46rem; }
.bubble.you { background: var(--accent); color: var(--bg); margin-left: auto; }
.bubble.assistant { background: var(--bg); border: 1px solid var(--line); }
.bubble.failed { color: var(--bad); border-color: var(--bad); }
.chat-composer { display: flex; gap: .6rem; margin-top: .75rem; align-items: flex-end; }
.chat-composer textarea { flex: 1; font: inherit; padding: .5rem .6rem; resize: vertical;
    border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--fg); }

/* KaTeX sits inside a bubble that sets white-space: pre-wrap for plain text;
   display maths needs to escape that or every fraction gets the newlines in
   its own source. */
.bubble .katex-display { white-space: normal; margin: .6rem 0; overflow-x: auto; }
.bubble .katex { white-space: normal; }
.bubble.you .katex { color: inherit; }
/* A reply that stopped because it ran out of room, not because it was done. */
.note.truncated { color: var(--warn, #a15c00); margin: .2rem 0 .8rem; }
/* Offered under a reply that contains files worth keeping. */
.link.download { display: inline-block; margin: .3rem 0 .8rem; }

/* A usage bar inside a table cell. Drawn with two elements rather than a
   gradient so the number stays selectable and readable by a screen reader. */
.meter { position: relative; min-width: 9rem; }
.meter > span {
  display: block; height: .75rem; border-radius: 2px;
  background: var(--accent); opacity: .55;
}
.meter > em { font-style: normal; font-size: .8rem; color: var(--muted); }
.bad { color: var(--bad); }

/* Chart palette.
 *
 * Roles rather than raw colours, so light and dark swap in one place and the
 * charts are written against meaning. The values are a validated categorical
 * set: every adjacent pair clears the colour-vision-deficiency separation
 * threshold, and the dark column is the same hues re-stepped for the dark
 * surface rather than an automatic flip of the light one.
 *
 * Checked with a validator rather than by eye, which is the only way anyone
 * can honestly claim a palette is colourblind-safe. */
:root {
  --viz-1: #2a78d6;   /* blue */
  --viz-2: #eb6834;   /* orange */
  --viz-3: #1baf7a;   /* aqua */
  --viz-4: #eda100;   /* yellow */
  --viz-grid: #e6e5e1;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --viz-1: #3987e5;
    --viz-2: #d95926;
    --viz-3: #199e70;
    --viz-4: #c98500;
    --viz-grid: #2e2e2c;
  }
}
:root[data-theme="dark"] {
  --viz-1: #3987e5;
  --viz-2: #d95926;
  --viz-3: #199e70;
  --viz-4: #c98500;
  --viz-grid: #2e2e2c;
}

/* Stat tiles: the headline figures, which are numbers rather than charts. */
.tiles { display: flex; flex-wrap: wrap; gap: .75rem; margin: .5rem 0 1.25rem; }
.tile {
  flex: 1 1 8.5rem; min-width: 8.5rem; padding: .6rem .75rem;
  border: 1px solid var(--viz-grid); border-radius: 6px; background: var(--card);
}
.tile .v { font-size: 1.5rem; line-height: 1.1; font-variant-numeric: tabular-nums; }
.tile .k { font-size: .8rem; color: var(--muted); }
.tile svg { display: block; margin-top: .35rem; }
.chart { margin: .25rem 0 1rem; }
.chart svg { display: block; max-width: 100%; height: auto; }