:root {
  --bg: #fafaf7; --fg: #1d2318; --muted: #66705f; --line: #dfe3d8; --card: #fff;
  --accent: #2f6b2f; --accent-fg: #fff; --warn: #a15c00; --bad: #b3261e; --ok: #2f6b2f; --hl: #fff6c9;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #141712; --fg: #e8ece3; --muted: #9aa392; --line: #2c3228; --card: #1c2019;
    --accent: #6fbf6f; --accent-fg: #0d130b; --warn: #f0b04a; --bad: #ff8a80; --ok: #8fd18f; --hl: #3a3a1c; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--fg); }
a { color: var(--accent); }
header.top { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; padding: .6rem 16px; border-bottom: 1px solid var(--line); background: var(--card); }
.brand { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--fg); }
nav { display: flex; flex-wrap: wrap; gap: .25rem .9rem; align-items: center; }
nav a { text-decoration: none; }
.banner { background: var(--hl); padding: .4rem 16px; font-size: .9rem; }
main { max-width: 1100px; margin: 0 auto; padding: 1rem 16px 3rem; }
footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 1rem; }
h1 { font-size: 1.5rem; margin: .2rem 0 1rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .5rem; }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 1rem; margin: .75rem 0; }
.grid { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: .2rem; }
input, select, textarea { font: inherit; width: 100%; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--fg); }
button, .btn { font: inherit; cursor: pointer; padding: .5rem .9rem; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-fg); text-decoration: none; display: inline-block; }
button.secondary, .btn.secondary { background: transparent; color: var(--accent); }
button.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
button.link { background: none; border: none; color: var(--accent); padding: 0; }
button.small, .btn.small { padding: .2rem .5rem; font-size: .85rem; }
form.inline { display: inline; }
.errorlist { color: var(--bad); margin: .2rem 0; padding-left: 1rem; font-size: .9rem; }
.messages { list-style: none; padding: 0; }
.messages li { padding: .5rem .8rem; border-radius: 6px; margin-bottom: .4rem; background: var(--hl); }
.messages li.error { background: #fde2df; color: #6b1510; }
.hp { position: absolute; left: -5000px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .35rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .85rem; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tablewrap { overflow-x: auto; }
tr.oncourse td { background: var(--hl); }
.tag { display: inline-block; font-size: .75rem; padding: .05rem .4rem; border-radius: 4px; border: 1px solid var(--line); color: var(--muted); }
.tag.warn { border-color: var(--warn); color: var(--warn); }
.tag.bad { border-color: var(--bad); color: var(--bad); }
.tag.ok { border-color: var(--ok); color: var(--ok); }
.tabs { display: flex; flex-wrap: wrap; gap: .3rem; margin: .5rem 0 1rem; }
.unchecked { color: var(--muted); font-style: italic; }
.tabs a.active { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
table.detail td { font-size: .9rem; }
.runcell .sub { font-size: .78rem; color: var(--muted); line-height: 1.3; }
.runcell.locked { background: color-mix(in srgb, var(--ok) 8%, transparent); }
.bad { color: var(--bad); font-weight: 600; }
.dev.excl { text-decoration: line-through; }
tr.warnrow td:first-child { box-shadow: inset 4px 0 0 var(--bad); }
body.only-warn tr.okrow { display: none; }
.tabs a { padding: .25rem .6rem; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; font-size: .9rem; }
.bigsearch { font-size: 1.3rem; padding: .7rem; }
.flash { animation: flash 2s ease-out; }
@keyframes flash { from { background: var(--hl); } to { background: transparent; } }
.dot { display: inline-block; width: .7rem; height: .7rem; border-radius: 50%; vertical-align: middle; }
.dot.green { background: #2e9e44; } .dot.yellow { background: #e0a800; } .dot.red { background: #d93025; } .dot.grey { background: #999; }
.row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: end; }
.row > * { flex: 1 1 140px; }
@media (max-width: 600px) { th.hide-sm, td.hide-sm { display: none; } }