/* retainr: narrow-first, dark-mode by media query, no framework. */
:root {
  --bg: #fbfbfd; --fg: #16181d; --muted: #6a7080; --line: #dcdde3;
  --panel: #ffffff; --accent: #2f6feb; --warn: #a15c00; --bad: #b3261e;
  --sel: #e8effd;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171c; --fg: #e6e7ea; --muted: #9aa0ad; --line: #2c2f37;
    --panel: #1b1e24; --accent: #78a9ff; --warn: #e0b061; --bad: #ff8a80;
    --sel: #22304a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.45 ui-sans-serif, system-ui, "Segoe UI", Roboto, sans-serif;
}
header {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: .8rem 1rem; border-bottom: 1px solid var(--line);
}
h1 { font-size: 1.05rem; margin: 0; letter-spacing: .02em; }
h2 { font-size: 1rem; margin: 0 0 .4rem; word-break: break-all; }
.who { color: var(--muted); font-size: .9rem; }
main { padding: 1rem; max-width: 1100px; margin: 0 auto; }
button {
  font: inherit; padding: .4rem .7rem; border: 1px solid var(--line);
  border-radius: 6px; background: var(--panel); color: var(--fg); cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.link { border: 0; background: none; color: var(--accent); padding: 0; }
label { display: block; margin: .55rem 0; }
label.check { display: flex; gap: .45rem; align-items: center; }
input, select { font: inherit; padding: .35rem .45rem; border: 1px solid var(--line);
  border-radius: 5px; background: var(--panel); color: var(--fg); }
input[type=number] { width: 6.5rem; }
form { max-width: 24rem; }
.toolbar { display: flex; gap: .8rem; align-items: center; margin-bottom: .6rem; }
.toolbar #logout { margin-left: auto; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 20rem; gap: 1rem;
  align-items: start; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; } }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: .3rem .45rem; border-bottom: 1px solid var(--line);
  word-break: break-word; }
th { color: var(--muted); font-weight: 600; font-size: .8rem;
  text-transform: uppercase; letter-spacing: .04em; }
td.num, th.num { text-align: right; }
tr.folder { cursor: pointer; }
tr.folder:hover td { background: var(--sel); }
tr.sel td { background: var(--sel); }
tr.parent td { color: var(--muted); font-style: italic; }
tr.skipped td { color: var(--warn); font-size: .85rem; }
td.rule { font-size: .85rem; color: var(--muted); }
td.rule.ceiling, td.rule.ceiling\+user { color: var(--warn); }
aside { background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: .8rem; position: sticky; top: 1rem; }
aside .row { display: flex; gap: .6rem; align-items: center; margin-top: .7rem; }
.error { color: var(--bad); }
.note { color: var(--muted); font-size: .85rem; }
#samples td { font-size: .85rem; }