/* NeuroScope - one stylesheet. Colours are tokens so light/dark swap in one place. */
:root {
  color-scheme: light;
  --page: #f3f3f0;
  --card: #ffffff;
  --surface: #fcfcfb;
  --sunken: #f0efeb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --border-strong: rgba(11, 11, 11, 0.18);
  --accent: #2a78d6;
  --accent-ink: #1c5cab;
  --accent-wash: rgba(42, 120, 214, 0.10);
  --good: #0ca30c;
  --good-ink: #006300;
  --warn: #fab219;
  --serious: #ec835a;
  --bad: #d03b3b;
  --neg: #2a78d6;
  --pos: #e34948;
  --mid: #f0efec;
  --c1: #2a78d6; --c2: #eb6834; --c3: #1baf7a; --c4: #eda100;
  --c5: #e87ba4; --c6: #008300; --c7: #4a3aa7; --c8: #e34948;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.05);
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d; --card: #1a1a19; --surface: #1a1a19; --sunken: #232321;
    --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781; --grid: #2c2c2a; --axis: #383835;
    --border: rgba(255,255,255,.10); --border-strong: rgba(255,255,255,.18);
    --accent: #3987e5; --accent-ink: #86b6ef; --accent-wash: rgba(57,135,229,.16);
    --good-ink: #0ca30c; --mid: #383835; --neg: #3987e5; --pos: #e66767;
    --c1: #3987e5; --c2: #d95926; --c3: #199e70; --c4: #c98500;
    --c5: #d55181; --c6: #008300; --c7: #9085e9; --c8: #e66767;
    --shadow: 0 1px 2px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --card: #1a1a19; --surface: #1a1a19; --sunken: #232321;
  --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781; --grid: #2c2c2a; --axis: #383835;
  --border: rgba(255,255,255,.10); --border-strong: rgba(255,255,255,.18);
  --accent: #3987e5; --accent-ink: #86b6ef; --accent-wash: rgba(57,135,229,.16);
  --good-ink: #0ca30c; --mid: #383835; --neg: #3987e5; --pos: #e66767;
  --c1: #3987e5; --c2: #d95926; --c3: #199e70; --c4: #c98500;
  --c5: #d55181; --c6: #008300; --c7: #9085e9; --c8: #e66767;
  --shadow: 0 1px 2px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--page); color: var(--ink); font: 14px/1.45 var(--sans); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent-ink); }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; }
h1 { font-size: 22px; font-weight: 650; }
h2 { font-size: 17px; font-weight: 650; }
h3 { font-size: 14px; font-weight: 650; }
h4 { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
p { margin: 0; }
code, .mono { font-family: var(--mono); font-size: 12.5px; }
.muted { color: var(--muted); }
.ink2 { color: var(--ink-2); }
.small { font-size: 12px; }
.tnum { font-variant-numeric: tabular-nums; }
.hidden { display: none !important; }
.grow { flex: 1; min-width: 0; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.nowrap { flex-wrap: nowrap; }
.col { display: flex; flex-direction: column; gap: 10px; }
.between { justify-content: space-between; }
.gap-lg { gap: 18px; }
.mt { margin-top: 12px; } .mt-lg { margin-top: 20px; } .mb { margin-bottom: 12px; }

/* ---------- top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 18px; padding: 0 18px;
  height: 56px; background: var(--card); border-bottom: 1px solid var(--border); }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; letter-spacing: -.01em; white-space: nowrap; }
.steps { display: flex; gap: 2px; flex: 1; overflow-x: auto; scrollbar-width: none; }
.steps::-webkit-scrollbar { display: none; }
.step { display: flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 8px; border: 0; background: none;
  color: var(--ink-2); cursor: pointer; white-space: nowrap; font-weight: 500; }
.step:hover { background: var(--sunken); color: var(--ink); }
.step .n { width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; font-size: 11px; font-weight: 700;
  border: 1.5px solid var(--axis); color: var(--muted); }
.step.done .n { background: var(--good); border-color: var(--good); color: #fff; }
.step.active { background: var(--accent-wash); color: var(--accent-ink); }
.step.active .n { border-color: var(--accent); color: var(--accent-ink); }
.step.done.active .n { background: var(--accent); border-color: var(--accent); color: #fff; }
.top-actions { display: flex; gap: 6px; }
.statusline { display: flex; gap: 8px; padding: 8px 18px; font-size: 12px; color: var(--ink-2); flex-wrap: wrap; min-height: 34px;
  border-bottom: 1px solid var(--border); background: var(--surface); }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 2px 9px; border-radius: 99px; background: var(--sunken);
  border: 1px solid var(--border); white-space: nowrap; font-size: 12px; }
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); }
.pill.good .dot { background: var(--good); } .pill.warn .dot { background: var(--warn); } .pill.run .dot { background: var(--accent); animation: pulse 1s infinite; }
.pill.bad .dot { background: var(--bad); }
@keyframes pulse { 50% { opacity: .3; } }

main { max-width: 1480px; margin: 0 auto; padding: 18px 18px 60px; }
.page { display: none; }
.page.show { display: block; animation: fade .18s ease-out; }
@keyframes fade { from { opacity: 0; transform: translateY(3px); } }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.page-head p { color: var(--ink-2); margin-top: 4px; max-width: 760px; }

/* ---------- cards / layout ---------- */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); min-width: 0; }
.card.flat { box-shadow: none; }
.card.pad-sm { padding: 12px; }
.card > h3, .card > .card-head { margin-bottom: 12px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.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)); }
.split { display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 16px; align-items: start; }
.split.wide-left { grid-template-columns: minmax(0, 1fr) 380px; }
.sticky { position: sticky; top: 104px; }
@media (max-width: 1100px) { .split, .split.wide-left { grid-template-columns: 1fr; } .sticky { position: static; } .g4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 760px) { .g2, .g3, .g4 { grid-template-columns: 1fr; } main { padding: 12px 12px 60px; } .topbar { gap: 8px; padding: 0 10px; } .brand span { display: none; } .step { padding: 6px 8px; } .step .lbl { display: none; } }

.empty { padding: 36px 20px; text-align: center; color: var(--muted); border: 1.5px dashed var(--border-strong); border-radius: var(--radius); }
.empty h3 { color: var(--ink-2); margin-bottom: 6px; }
.empty .btn { margin-top: 12px; }
.note { padding: 10px 12px; border-radius: 8px; background: var(--accent-wash); color: var(--ink); font-size: 13px; }
.note.warn { background: rgba(250, 178, 25, .14); }
.note.bad { background: rgba(208, 59, 59, .10); }
.note.good { background: rgba(12, 163, 12, .10); }
.notes { display: flex; flex-direction: column; gap: 6px; }

/* ---------- buttons & inputs ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 14px; border-radius: 8px;
  border: 1px solid var(--border-strong); background: var(--card); cursor: pointer; font-weight: 550; white-space: nowrap;
  transition: background .12s, border-color .12s; line-height: 1.2; }
.btn:hover { background: var(--sunken); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { color: var(--bad); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--sunken); }
.btn.sm { padding: 5px 10px; font-size: 13px; }
.btn.xs { padding: 2px 7px; font-size: 12px; border-radius: 6px; }
.btn.icon { width: 32px; padding: 5px 0; }
.btn.lg { padding: 11px 20px; font-size: 15px; }
.seg { display: inline-flex; background: var(--sunken); border-radius: 9px; padding: 3px; gap: 2px; border: 1px solid var(--border); flex-wrap: wrap; }
.seg button { border: 0; background: none; padding: 6px 12px; border-radius: 7px; cursor: pointer; color: var(--ink-2); font-weight: 550; }
.seg button.on { background: var(--card); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.12); }
.seg.sm button { padding: 3px 9px; font-size: 12.5px; }
input[type=text], input[type=number], input:not([type]), select, textarea {
  border: 1px solid var(--border-strong); background: var(--surface); border-radius: 7px; padding: 6px 9px; min-width: 0; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
textarea { width: 100%; resize: vertical; }
select { padding-right: 6px; }
input[type=number] { width: 90px; }
input[type=range] { accent-color: var(--accent); }
input[type=checkbox], input[type=radio] { accent-color: var(--accent); width: 15px; height: 15px; margin: 0; }
label.chk { display: flex; gap: 8px; align-items: flex-start; cursor: pointer; padding: 3px 0; }
label.chk > input { margin-top: 2px; flex: none; }
label.chk small { display: block; color: var(--muted); font-size: 12px; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field > span { font-size: 12px; color: var(--ink-2); font-weight: 550; }
.field > small { color: var(--muted); font-size: 11.5px; }
.fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
.form-sec { padding: 12px 0; border-top: 1px solid var(--border); }
.form-sec:first-child { border-top: 0; padding-top: 0; }
.form-sec > h4 { margin-bottom: 8px; }
.form-sec > select, .field > select, .field > input:not([type=checkbox]):not([type=radio]) { max-width: 100%; }
.form-sec > select { width: 100%; }
.radios { display: flex; flex-direction: column; gap: 2px; }

/* ---------- tables ---------- */
.tbl-wrap { overflow: auto; max-width: 100%; border: 1px solid var(--border); border-radius: 8px; }
table.tbl { border-collapse: collapse; width: 100%; font-size: 12.5px; }
.tbl th, .tbl td { padding: 6px 10px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.tbl th { background: var(--sunken); font-weight: 600; color: var(--ink-2); position: sticky; top: 0; }
.tbl td.num, .tbl th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td.wrap { white-space: normal; min-width: 240px; }
.tbl tr.sel td { background: var(--accent-wash); }
.tbl tr.click { cursor: pointer; } .tbl tr.click:hover td { background: var(--sunken); }

/* ---------- dataset picker ---------- */
.ds-group { margin-bottom: 18px; }
.ds-group > h4 { margin-bottom: 8px; }
.ds-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.ds-card { text-align: left; padding: 12px 13px; border: 1px solid var(--border); border-radius: 9px; background: var(--card); cursor: pointer;
  display: flex; flex-direction: column; gap: 4px; transition: border-color .12s, transform .12s; }
.ds-card:hover { border-color: var(--accent); }
.ds-card.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; background: var(--accent-wash); }
.ds-card b { font-weight: 600; }
.ds-card span { color: var(--ink-2); font-size: 12.5px; }
.kind-tag { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.drop { border: 1.5px dashed var(--border-strong); border-radius: 10px; padding: 22px; text-align: center; cursor: pointer; color: var(--ink-2); }
.drop.over { border-color: var(--accent); background: var(--accent-wash); }
.gallery { display: flex; flex-direction: column; gap: 8px; }
.gallery .g-row { display: flex; gap: 6px; align-items: center; }
.gallery .g-row > b { width: 110px; font-size: 12px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gallery img, .thumb { width: 44px; height: 44px; image-rendering: pixelated; border-radius: 4px; border: 1px solid var(--border); object-fit: cover; background: #000; }

/* ---------- text pipeline trace ---------- */
.trace-ex { border: 1px solid var(--border); border-radius: 9px; overflow: hidden; margin-bottom: 12px; }
.trace-ex .ex-head { padding: 8px 12px; background: var(--sunken); display: flex; justify-content: space-between; gap: 8px; font-size: 12px; }
.tstep { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 10px; padding: 7px 12px; border-top: 1px solid var(--border); }
.tstep.same { opacity: .55; }
.tstep .sname { font-size: 12px; font-weight: 600; color: var(--ink-2); }
.tstep .sname small { display: block; font-weight: 400; color: var(--muted); font-size: 11px; line-height: 1.3; }
.tstep .sval { font-family: var(--mono); font-size: 12px; word-break: break-word; }
.tok { display: inline-block; padding: 1px 6px; margin: 2px 3px 2px 0; border-radius: 5px; background: var(--sunken); border: 1px solid var(--border); font-family: var(--mono); font-size: 12px; }
.tok.gone { text-decoration: line-through; color: var(--bad); border-color: rgba(208,59,59,.3); background: rgba(208,59,59,.07); }
.tok.chg { border-color: var(--c2); background: rgba(235,104,52,.10); }
.tok.pad { opacity: .35; }

/* ---------- model builder ---------- */
.layer-stack { display: flex; flex-direction: column; gap: 0; }
.lcard { border: 1px solid var(--border); border-radius: 10px; background: var(--card); padding: 10px 12px; position: relative; }
.lcard.err { border-color: var(--bad); box-shadow: 0 0 0 1px var(--bad) inset; }
.lcard.io { background: var(--sunken); }
.lcard .lhead { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lcard .lhead .idx { width: 22px; height: 22px; border-radius: 6px; background: var(--sunken); display: grid; place-items: center; font-size: 11px; font-weight: 700; color: var(--ink-2); }
.lcard .lhead select.ltype { font-weight: 600; }
.lcard .shape { margin-left: auto; font-family: var(--mono); font-size: 12px; color: var(--ink-2); display: flex; gap: 8px; align-items: center; }
.lcard .lparams { display: flex; flex-wrap: wrap; gap: 10px 14px; margin-top: 9px; align-items: flex-end; }
.lcard .lparams .field input[type=number] { width: 78px; }
.lcard .ldoc { font-size: 12px; color: var(--muted); margin-top: 6px; }
.lcard .lerr { color: var(--bad); font-size: 12.5px; margin-top: 6px; font-weight: 550; }
.lcard .lacts { display: flex; gap: 2px; }
.lcard .lacts .btn { padding: 2px 6px; }
.connector { height: 18px; display: flex; justify-content: center; position: relative; }
.connector::before { content: ""; width: 2px; background: var(--axis); }
.connector .ins { position: absolute; top: 0; height: 18px; width: 18px; border-radius: 50%; border: 1px solid var(--border-strong); background: var(--card);
  font-size: 13px; line-height: 15px; text-align: center; cursor: pointer; opacity: 0; transition: opacity .1s; color: var(--ink-2); padding: 0; }
.connector:hover .ins { opacity: 1; }
.auto-badge { font-size: 10.5px; background: var(--sunken); border: 1px solid var(--border); border-radius: 5px; padding: 0 5px; color: var(--muted); }
.act-pick { display: flex; align-items: center; gap: 6px; }
.act-pick svg { flex: none; }
.neuron-acts { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; width: 100%; }
.neuron-acts select { font-size: 11.5px; padding: 2px 3px; }
.neuron-acts .na { display: flex; flex-direction: column; align-items: center; gap: 1px; font-size: 10px; color: var(--muted); }
.add-menu { display: flex; flex-direction: column; gap: 10px; }
.add-menu .grp { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.add-menu .grp > span { width: 100px; font-size: 12px; color: var(--muted); font-weight: 600; }
.preset-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { padding: 6px 11px; border-radius: 99px; border: 1px solid var(--border-strong); background: var(--card); cursor: pointer; font-size: 12.5px; font-weight: 550; }
.chip:hover { border-color: var(--accent); color: var(--accent-ink); }
.chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.zoo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.zoo-card { border: 1px solid var(--border); border-radius: 10px; padding: 13px; background: var(--card); display: flex; flex-direction: column; gap: 8px; }
.zoo-card .facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 3px 10px; font-size: 12px; color: var(--ink-2); }
.zoo-card .facts b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.tree { font-size: 12.5px; max-height: 560px; overflow: auto; }
.tree .tn { display: grid; grid-template-columns: minmax(0,1fr) 110px 70px; gap: 8px; padding: 3px 4px; border-radius: 5px; align-items: center; }
.tree .tn:hover { background: var(--sunken); }
.tree .tn .nm { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tree .tn .nm .tg { cursor: pointer; display: inline-block; width: 14px; color: var(--muted); }
.tree .tn .shp { font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); }
.tree .tn .prm { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.code-area { font-family: var(--mono); font-size: 12.5px; min-height: 360px; line-height: 1.5; tab-size: 4; background: var(--sunken); }
pre.code { background: var(--sunken); padding: 12px; border-radius: 8px; overflow: auto; font-size: 12px; max-height: 420px; margin: 0; }

/* ---------- visualize ---------- */
.viz-bar { display: flex; gap: 10px 16px; align-items: center; flex-wrap: wrap; }
.viz-bar .grpbox { display: flex; gap: 6px; align-items: center; }
.viz-bar .lbl { font-size: 12px; color: var(--muted); font-weight: 600; }
.viz-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr) 320px; gap: 14px; align-items: start; margin-top: 14px; }
@media (max-width: 1250px) { .viz-layout { grid-template-columns: 230px minmax(0,1fr); } .viz-layout > .viz-right { grid-column: 1 / -1; } }
@media (max-width: 800px) { .viz-layout { grid-template-columns: 1fr; } }
.flow { position: relative; display: flex; gap: 0; overflow-x: auto; padding: 6px 2px 12px; align-items: stretch; scroll-behavior: smooth; }
.fcard { flex: none; width: 128px; border: 1px solid var(--border); border-radius: 10px; background: var(--card); padding: 8px; cursor: pointer;
  display: flex; flex-direction: column; gap: 5px; transition: border-color .15s, box-shadow .2s, opacity .2s; position: relative; }
.fcard:hover { border-color: var(--border-strong); }
.fcard.sel { border-color: var(--accent); box-shadow: 0 0 0 1.5px var(--accent) inset; }
.fcard.pending { opacity: .38; }
.fcard.fwd-now { box-shadow: 0 0 0 3px rgba(42,120,214,.35); border-color: var(--accent); }
.fcard.bwd-now { box-shadow: 0 0 0 3px rgba(227,73,72,.35); border-color: var(--pos); }
.fcard .fname { font-weight: 650; font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fcard .ftype { font-size: 11px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fcard .fshape { font-family: var(--mono); font-size: 10.5px; color: var(--ink-2); }
.fcard .fimg { width: 100%; height: 76px; object-fit: contain; image-rendering: pixelated; background: var(--sunken); border-radius: 5px; }
.fcard .fimg.empty { display: grid; place-items: center; font-size: 11px; color: var(--muted); }
.fcard .fstat { font-size: 10.5px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.fcard .fbar { height: 4px; border-radius: 2px; background: var(--sunken); overflow: hidden; }
.fcard .fbar > i { display: block; height: 100%; background: var(--pos); }
.fcard .expand { position: absolute; top: 5px; right: 5px; font-size: 10px; padding: 0 4px; }
.fcard.child { width: 112px; background: var(--surface); }
.fcard.group-open { border-style: dashed; }
.farrow { flex: none; width: 22px; display: flex; align-items: center; justify-content: center; color: var(--axis); font-size: 14px; }
.farrow.lit-f { color: var(--accent); } .farrow.lit-b { color: var(--pos); }
.phase-legend { display: flex; gap: 14px; font-size: 12px; color: var(--ink-2); align-items: center; }
.phase-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 4px; vertical-align: -1px; }
.detail-tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin: 0 -16px 14px; padding: 0 12px; overflow-x: auto; }
.detail-tabs button { border: 0; background: none; padding: 9px 12px; cursor: pointer; color: var(--ink-2); font-weight: 550; border-bottom: 2px solid transparent; white-space: nowrap; }
.detail-tabs button.on { color: var(--accent-ink); border-bottom-color: var(--accent); }
.detail-tabs button:disabled { opacity: .35; cursor: default; }
.maps-img { max-width: 100%; image-rendering: pixelated; border-radius: 6px; cursor: crosshair; display: block; }
.stat-row { display: flex; gap: 6px 14px; flex-wrap: wrap; font-size: 12px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.stat-row b { color: var(--ink); font-weight: 600; }
.math { background: var(--sunken); border-radius: 8px; padding: 12px 14px; font-size: 13.5px; line-height: 1.7; }
.math .eq { font-family: "Cambria Math", "STIX Two Math", Georgia, serif; font-size: 15px; display: block; margin: 4px 0; }
.math .eq.fwd { color: var(--accent-ink); } .math .eq.bwd { color: var(--pos); }
.nterm-tbl td, .nterm-tbl th { padding: 4px 8px; }
.input-view img { width: 100%; image-rendering: pixelated; border-radius: 8px; border: 1px solid var(--border); }
.tokens-hl { display: flex; flex-wrap: wrap; gap: 3px 2px; line-height: 1.9; font-size: 13px; }
.tokens-hl span { padding: 2px 4px; border-radius: 4px; margin-right: 2px; }
.pbar { display: grid; grid-template-columns: minmax(60px, 120px) minmax(0,1fr) 54px; gap: 6px; align-items: center; font-size: 12px; margin: 3px 0; }
.pbar .nm { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pbar .track { height: 14px; background: var(--sunken); border-radius: 3px; position: relative; overflow: hidden; }
.pbar .track > i { position: absolute; top: 0; bottom: 0; left: 0; background: var(--axis); border-radius: 0 3px 3px 0; }
.pbar.pred .track > i { background: var(--accent); }
.pbar.tgt .nm { font-weight: 700; }
.pbar .v { text-align: right; font-variant-numeric: tabular-nums; }
.dbar { display: grid; grid-template-columns: minmax(60px, 130px) minmax(0,1fr) 64px; gap: 6px; align-items: center; font-size: 12px; margin: 3px 0; }
.dbar .track { height: 12px; position: relative; }
.dbar .track::before { content: ""; position: absolute; left: 50%; top: -2px; bottom: -2px; width: 1px; background: var(--axis); }
.dbar .track > i { position: absolute; top: 0; bottom: 0; border-radius: 2px; }
.dbar .nm { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dbar .v { text-align: right; font-variant-numeric: tabular-nums; }
.netgraph { width: 100%; overflow-x: auto; }
.netgraph svg { display: block; }
.netgraph .neuron { cursor: pointer; }
.netgraph .neuron:hover circle, .netgraph .neuron:hover rect { stroke: var(--ink); stroke-width: 2; }

/* ---------- charts ---------- */
.chart { position: relative; width: 100%; }
.chart svg { display: block; overflow: visible; }
.chart text { fill: var(--muted); font-size: 11px; font-family: var(--sans); }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .axisline { stroke: var(--axis); stroke-width: 1; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; color: var(--ink-2); margin-bottom: 6px; }
.legend i { display: inline-block; width: 12px; height: 3px; border-radius: 2px; margin-right: 5px; vertical-align: 3px; }
.legend i.dash { background-image: linear-gradient(90deg, currentColor 50%, transparent 50%) !important; background-size: 5px 3px; }
.chart-title { font-size: 12.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 4px; display: flex; justify-content: space-between; gap: 8px; }
.tooltip { position: fixed; z-index: 100; pointer-events: none; background: var(--card); color: var(--ink); border: 1px solid var(--border-strong);
  border-radius: 7px; padding: 6px 9px; font-size: 12px; box-shadow: 0 4px 16px rgba(0,0,0,.14); opacity: 0; transition: opacity .08s; max-width: 320px; font-variant-numeric: tabular-nums; }
.tooltip.show { opacity: 1; }
.tooltip .tt-row { display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.tooltip .sw { width: 9px; height: 9px; border-radius: 2px; display: inline-block; margin-right: 5px; }
.stat-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.tile { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.tile .k { font-size: 12px; color: var(--ink-2); font-weight: 550; }
.tile .v { font-size: 26px; font-weight: 650; letter-spacing: -.01em; margin-top: 2px; }
.tile .s { font-size: 11.5px; color: var(--muted); }
.cm-cell { cursor: pointer; }
.cm-cell:hover { stroke: var(--ink); stroke-width: 1.5; }
.sample-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.sample { border: 1px solid var(--border); border-radius: 8px; padding: 7px; cursor: pointer; display: flex; gap: 8px; align-items: flex-start; font-size: 12px; background: var(--card); }
.sample:hover { border-color: var(--accent); }
.sample .st { flex: 1; min-width: 0; }
.sample .st .txt { color: var(--ink-2); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.sample .bad { color: var(--bad); font-weight: 600; }
.sample .ok { color: var(--good-ink); font-weight: 600; }
.progress { height: 8px; background: var(--sunken); border-radius: 4px; overflow: hidden; }
.progress > i { display: block; height: 100%; background: var(--accent); transition: width .25s; }
.boundary-wrap { position: relative; width: 100%; aspect-ratio: 1; max-width: 420px; }
.boundary-wrap img { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: 8px; image-rendering: auto; }
.boundary-wrap svg { position: absolute; inset: 0; }
.drawpad { border: 1px solid var(--border-strong); border-radius: 8px; touch-action: none; cursor: crosshair; background: #000; display: block; }
.diag { display: flex; gap: 10px; align-items: flex-start; padding: 9px 11px; border-radius: 8px; background: var(--sunken); font-size: 13px; }
.diag .ic { font-weight: 800; width: 18px; text-align: center; flex: none; }
.diag.warn .ic { color: #b07a00; } .diag.bad .ic { color: var(--bad); } .diag.good .ic { color: var(--good-ink); } .diag.info .ic { color: var(--accent-ink); }

/* ---------- modal & toasts ---------- */
.modal-back { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 60; display: grid; place-items: center; padding: 16px; animation: fade .12s; }
.modal { background: var(--card); border-radius: 12px; width: min(760px, 100%); max-height: 88vh; display: flex; flex-direction: column; box-shadow: 0 16px 48px rgba(0,0,0,.25); border: 1px solid var(--border); }
.modal.wide { width: min(1100px, 100%); }
.modal .m-head { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.modal .m-body { padding: 16px 18px; overflow: auto; }
.modal .m-foot { padding: 12px 18px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 120; }
.toast { background: var(--ink); color: var(--card); padding: 10px 14px; border-radius: 9px; max-width: 420px; box-shadow: 0 6px 20px rgba(0,0,0,.2); font-size: 13px; animation: fade .15s; }
.toast.bad { background: var(--bad); color: #fff; }
.toast.good { background: var(--good-ink); color: #fff; }
.menu { position: absolute; z-index: 70; background: var(--card); border: 1px solid var(--border-strong); border-radius: 9px; box-shadow: 0 8px 28px rgba(0,0,0,.16); padding: 5px; min-width: 200px; }
.menu button { display: block; width: 100%; text-align: left; border: 0; background: none; padding: 7px 10px; border-radius: 6px; cursor: pointer; }
.menu button:hover { background: var(--sunken); }
.spinner { width: 16px; height: 16px; border: 2px solid var(--border-strong); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; vertical-align: -3px; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-over { display: flex; align-items: center; gap: 10px; color: var(--ink-2); padding: 20px; justify-content: center; }
kbd { font-family: var(--mono); font-size: 11px; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 4px; padding: 0 4px; }