:root {
  color-scheme: light;
  --page: #f9f9f7; --surface: #fcfcfb; --surface-2: #f3f2ee; --ink: #0b0b0b; --ink-2: #52514e; --muted: #898781;
  --grid: #e1e0d9; --axis: #c3c2b7; --border: rgba(11,11,11,0.10);
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100;
  --good: #0ca30c; --good-text: #006300; --warn: #fab219; --serious: #ec835a; --crit: #d03b3b;
  --accent: #2a78d6; --accent-ink: #fff; --window: rgba(42,120,214,0.09); --warmup: rgba(237,161,0,0.10); --code: #f0efec;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --surface-2: #222220; --ink: #fff; --ink-2: #c3c2b7; --muted: #898781;
    --grid: #2c2c2a; --axis: #383835; --border: rgba(255,255,255,0.10);
    --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --good-text: #0ca30c;
    --accent: #3987e5; --window: rgba(57,135,229,0.12); --warmup: rgba(237,161,0,0.12); --code: #262624;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --surface-2: #222220; --ink: #fff; --ink-2: #c3c2b7; --muted: #898781;
  --grid: #2c2c2a; --axis: #383835; --border: rgba(255,255,255,0.10);
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --good-text: #0ca30c;
  --accent: #3987e5; --window: rgba(57,135,229,0.12); --warmup: rgba(237,161,0,0.12); --code: #262624;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--page); color: var(--ink); font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }
pre { background: var(--code); padding: 10px 12px; border-radius: 8px; overflow-x: auto; white-space: pre-wrap; word-break: break-word; margin: 6px 0; }
code { background: var(--code); padding: 1px 5px; border-radius: 4px; }
pre code { background: none; padding: 0; }
.top { display: flex; align-items: center; gap: 16px; padding: 10px 24px; border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 650; color: var(--ink); display: flex; align-items: center; gap: 8px; font-size: 15px; }
.brand:hover { text-decoration: none; }
.logo { width: 26px; height: 26px; display: inline-block; }
.hero-logo { width: 112px; height: 112px; display: block; margin: 0 0 10px -8px; }
#nav { display: flex; gap: 14px; flex: 1; flex-wrap: wrap; }
#nav a { color: var(--ink-2); }
#nav a.on { color: var(--ink); font-weight: 600; }
#nav .right { margin-left: auto; color: var(--muted); }
main { max-width: 1280px; margin: 0 auto; padding: 20px 24px 60px; }
h1 { font-size: 22px; margin: 4px 0 4px; font-weight: 650; }
h2 { font-size: 16px; margin: 26px 0 10px; font-weight: 650; }
h3 { font-size: 14px; margin: 14px 0 6px; font-weight: 600; }
.sub { color: var(--ink-2); margin: 0 0 14px; }
.muted { color: var(--muted); }
.crumbs { color: var(--muted); font-size: 13px; margin-bottom: 4px; }
.crumbs a { color: var(--ink-2); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.grid { display: grid; gap: 14px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.tile .k { color: var(--ink-2); font-size: 12px; }
.tile .v { font-size: 22px; font-weight: 600; margin-top: 2px; }
.tile .d { font-size: 12px; margin-top: 2px; color: var(--ink-2); }
.up, .tile .d.up { color: var(--good-text); } .down, .tile .d.down { color: var(--crit); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--grid); vertical-align: top; }
th { color: var(--ink-2); font-weight: 600; font-size: 12px; white-space: nowrap; }
td.num, th.num { text-align: right; }
tr.click { cursor: pointer; } tr.click:hover td { background: var(--surface-2); }
.tablewrap { overflow-x: auto; }
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); white-space: nowrap; color: var(--ink-2); background: var(--surface-2); }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--muted); }
.badge.good::before { background: var(--good); } .badge.warn::before { background: var(--warn); }
.badge.bad::before { background: var(--crit); } .badge.info::before { background: var(--accent); }
.badge.plain::before { display: none; }
button, .btn { font: inherit; border: 1px solid var(--border); background: var(--surface); color: var(--ink); padding: 6px 12px; border-radius: 8px; cursor: pointer; display: inline-block; }
button.primary, .btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
button.ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
button.danger { color: var(--crit); }
button:disabled { opacity: .5; cursor: default; }
input, textarea, select { font: inherit; padding: 7px 10px; border-radius: 8px; border: 1px solid var(--axis); background: var(--surface); color: var(--ink); width: 100%; }
label { display: block; margin: 10px 0 4px; color: var(--ink-2); font-size: 13px; }
.form { max-width: 380px; margin: 40px auto; }
.err { color: var(--crit); margin-top: 8px; min-height: 1.2em; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.hero { padding: 30px 0 10px; }
.hero h1 { font-size: 30px; }
.chart { position: relative; }
.chart svg { display: block; width: 100%; overflow: visible; }
.chart .title { font-weight: 600; font-size: 13px; margin-bottom: 2px; }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--ink-2); margin: 2px 0 4px; }
.legend i { display: inline-block; width: 12px; height: 3px; border-radius: 2px; margin-right: 5px; vertical-align: middle; }
.tip { position: fixed; z-index: 50; pointer-events: none; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 7px 9px; font-size: 12px; box-shadow: 0 4px 14px rgba(0,0,0,.12); max-width: 320px; }
.tip .t { color: var(--ink-2); margin-bottom: 3px; }
.tip i { display: inline-block; width: 10px; height: 3px; border-radius: 2px; margin-right: 5px; vertical-align: middle; }
.tip b { font-weight: 600; float: right; margin-left: 14px; font-variant-numeric: tabular-nums; }
.diff-old { color: var(--muted); text-decoration: line-through; }
.diff-new { font-weight: 600; }
.reason { color: var(--ink-2); font-size: 12.5px; }
.rec { border-top: 1px solid var(--grid); padding: 10px 0; }
.rec:first-child { border-top: none; }
.rec .h { display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.rec .id { font-family: ui-monospace, monospace; font-size: 12px; color: var(--muted); }
.ev { display: grid; grid-template-columns: 130px 110px 1fr; gap: 8px; padding: 5px 0; border-bottom: 1px solid var(--grid); font-size: 13px; }
details summary { cursor: pointer; color: var(--ink-2); margin: 6px 0; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--grid); margin: 18px 0 12px; flex-wrap: wrap; }
.tabs button { border: none; border-bottom: 2px solid transparent; border-radius: 0; background: none; color: var(--ink-2); padding: 8px 12px; }
.tabs button.on { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.diag { padding: 8px 10px; border-radius: 8px; background: var(--surface-2); margin: 6px 0; }
.kv { display: grid; grid-template-columns: minmax(150px, max-content) 1fr; gap: 4px 12px; font-size: 13px; }
.kv div:nth-child(odd) { color: var(--ink-2); }
.note { background: var(--surface-2); border-radius: 8px; padding: 10px 12px; color: var(--ink-2); }
.key { font-family: ui-monospace, monospace; background: var(--code); padding: 8px 10px; border-radius: 8px; word-break: break-all; }
@media (max-width: 900px) { .g3, .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) {
  main { padding: 14px 16px 50px; } .top { padding: 10px 16px; gap: 6px 12px; flex-wrap: wrap; } #nav { order: 3; flex-basis: 100%; gap: 12px; } #nav .right { display: none; }
  .g2, .g3, .g4 { grid-template-columns: minmax(0, 1fr); }
  .ev { grid-template-columns: 1fr; gap: 0; } .kv { grid-template-columns: 1fr; }
}
.itip { display: inline-flex; align-items: center; justify-content: center; width: 15px; height: 15px; border-radius: 50%; border: 1px solid var(--axis); color: var(--muted); font: italic 600 10px/1 Georgia, serif; cursor: help; vertical-align: 2px; margin-left: 4px; user-select: none; }
.itip:hover, .itip:focus { color: var(--accent); border-color: var(--accent); outline: none; }
.diag .mono, .kv .mono { overflow-wrap: anywhere; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-right: 8px; }
.seg button { border: none; border-radius: 0; padding: 6px 12px; background: var(--surface); color: var(--ink-2); }
.seg button.on { background: var(--surface-2); color: var(--ink); font-weight: 600; }
table.runs td.chg { max-width: 260px; overflow-wrap: anywhere; font-size: 12.5px; }
table.runs td, table.runs th { padding: 7px 6px; }
details.livesec { margin: 6px 0 14px; }
details.livesec > summary { cursor: pointer; padding: 4px 0; list-style-position: outside; }
details.livesec > summary h3 { margin: 0; }
details.livesec > .grid { margin-top: 8px; }
.cfgsplit { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 14px; align-items: start; }
@media (max-width: 760px) { .cfgsplit { grid-template-columns: minmax(0, 1fr); } }
table.kvt { width: 100%; }
table.kvt td { padding: 3px 6px; border: 0; }
table.kvt td:first-child { color: var(--ink-2); }
.waitbar { display: flex; height: 14px; border-radius: 4px; overflow: hidden; background: var(--grid); }
.waitbar span { display: block; height: 100%; }
i.dot { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; }
.rolled { color: var(--muted); }
.rolled b { font-weight: 500; }
.undo-tag { font-family: var(--font, inherit); font-size: 11px; color: var(--muted); border: 1px solid var(--grid); border-radius: 4px; padding: 0 4px; white-space: nowrap; }
table.runs td.chg { font-size: 12px; overflow-wrap: anywhere; }
/* read-only shared view: hide every control that changes something */
body.ro #share, body.ro #rename, body.ro #del, body.ro #edit, body.ro #addSess, body.ro a.detach, body.ro #savenotes, body.ro #savesn,
body.ro #studySel, body.ro #expf, body.ro [data-cancel], body.ro .study-line, body.ro #newStudy, body.ro #range + .ro-hide, body.ro .owner-only { display: none !important; }
body.ro a.cost { pointer-events: none; color: inherit; }
body.ro textarea { pointer-events: none; background: transparent; border-color: transparent; resize: none; }
/* responsive: nothing may push the page wider than the viewport */
main select, main input, main textarea, main pre, main svg, main img { max-width: 100%; }
main pre { overflow-x: auto; }
.chg-line { display: inline-block; }
@media (max-width: 760px) {
  .opt { display: none !important; }        /* secondary table columns (marked per table with data-opt) */
  table td.chg { min-width: 9em; }
  h1 { font-size: 22px; }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .row { flex-wrap: wrap; }
}
/* long unbreakable values (allocator / filesystem option strings, statement texts) wrap instead of widening the page */
.card { overflow-wrap: break-word; }
table.kvt td.mono, #recs .mono, #recs b { word-break: break-all; }
td.flags { white-space: nowrap; word-break: normal; }
td.flags details { white-space: normal; max-width: 420px; }
details.fullval { margin-top: 6px; font-size: 11.5px; color: var(--muted); word-break: break-all; }
details.fullval summary { cursor: pointer; font-family: var(--font, inherit); }
.diff-old { text-decoration: none !important; color: var(--muted); }
.foot { max-width: 1280px; margin: 0 auto 24px; padding: 12px 16px 0; border-top: 1px solid var(--border); display: flex; gap: 8px;
  justify-content: center; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.foot a { color: var(--ink-2); }
.swatch { display: inline-block; width: 12px; height: 10px; border-radius: 2px; margin: 0 4px 0 2px; vertical-align: -1px; border: 1px solid var(--border); }
.swatch.warm { background: var(--warmup); } .swatch.win { background: var(--window); }
/* stars, feedback, model advice */
button.star { background: none; border: none; padding: 0 4px; font-size: 16px; line-height: 1; color: var(--muted); }
button.star.on { color: var(--s4); }
button.star:hover { color: var(--s4); }
.fbmark { display: inline-block; font-size: 11.5px; padding: 0 6px; border-radius: 9px; margin-left: 4px; background: var(--surface-2); color: var(--ink-2); white-space: nowrap; }
.fbmark.bad { background: color-mix(in srgb, var(--crit) 16%, transparent); color: var(--crit); }
.fbmark.warn { background: color-mix(in srgb, var(--warn) 22%, transparent); }
.fbmark.good { background: color-mix(in srgb, var(--good) 14%, transparent); color: var(--good-text); }
.fb { border-left: 3px solid var(--grid); padding: 4px 10px; margin: 6px 0; }
.fb.bad { border-color: var(--crit); } .fb.warn { border-color: var(--warn); } .fb.good { border-color: var(--good); }
.fbform { display: grid; gap: 8px; margin-top: 8px; }
.fbform .seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; width: fit-content; max-width: 100%; }
.advice { border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; margin: 8px 0; background: var(--surface-2); }
.advice .h { display: flex; flex-wrap: wrap; gap: 6px; align-items: baseline; }
.advice .acts { display: inline-flex; gap: 4px; margin-left: auto; }
.advice .acts button { padding: 2px 8px; font-size: 12px; }
.fbform[hidden] { display: none; }
.badge.wrap { white-space: normal; max-width: 100%; align-items: baseline; }