:root {
  --bg: #0a0c11;
  --bg-2: #10141c;
  --bg-3: #161b26;
  --line: #232a38;
  --line-2: #2e3748;
  --fg: #e6ebf5;
  --fg-2: #9aa7bd;
  --fg-3: #66748c;
  --acc: #6ee7c8;
  --acc-2: #7aa2ff;
  --warn: #ffcf6e;
  --bad: #ff8095;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--acc-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
header {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #0d1119, #0a0c11);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(6px);
}
.brand { display: flex; align-items: baseline; gap: 10px; padding: 16px 0 10px; flex-wrap: wrap; }
.brand h1 { font-size: 20px; margin: 0; letter-spacing: -0.02em; }
.brand h1 span { color: var(--acc); }
.brand p { margin: 0; color: var(--fg-2); font-size: 13px; }

nav { display: flex; gap: 4px; flex-wrap: wrap; padding-bottom: 10px; }
nav button {
  background: none; border: 1px solid transparent; color: var(--fg-2);
  font: inherit; font-size: 13.5px; padding: 7px 13px; border-radius: 8px;
  cursor: pointer; white-space: nowrap;
}
nav button:hover { color: var(--fg); background: var(--bg-3); }
nav button[aria-selected="true"] {
  color: var(--bg); background: var(--acc); font-weight: 600; border-color: var(--acc);
}

/* ---------- layout ---------- */
main { padding: 26px 0 80px; }
.panel[hidden] { display: none; }
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 880px) { .grid.cols-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 12px; padding: 16px 18px;
}
.card > h2, .card > h3 { margin: 0 0 4px; font-size: 15px; letter-spacing: -0.01em; }
.card .sub { color: var(--fg-3); font-size: 12.5px; margin: 0 0 14px; }

h2.section { font-size: 18px; margin: 34px 0 4px; letter-spacing: -0.01em; }
p.section-sub { color: var(--fg-2); margin: 0 0 16px; font-size: 14px; }

/* ---------- controls ---------- */
label.field { display: block; font-size: 12px; color: var(--fg-2); margin: 0 0 6px; text-transform: uppercase; letter-spacing: 0.06em; }

textarea, input[type="text"], input[type="number"], select {
  width: 100%; background: var(--bg); color: var(--fg);
  border: 1px solid var(--line-2); border-radius: 9px;
  padding: 10px 12px; font: inherit; font-size: 14px;
}
textarea { font-family: var(--mono); font-size: 13.5px; min-height: 130px; resize: vertical; line-height: 1.6; }
textarea:focus, input:focus, select:focus { outline: 2px solid var(--acc); outline-offset: -1px; border-color: var(--acc); }

.btn {
  background: var(--bg-3); color: var(--fg); border: 1px solid var(--line-2);
  border-radius: 8px; padding: 7px 13px; font: inherit; font-size: 13px; cursor: pointer;
}
.btn:hover { border-color: var(--acc); color: var(--acc); }
.btn.primary { background: var(--acc); color: #06110d; border-color: var(--acc); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); color: #06110d; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.sm { padding: 4px 9px; font-size: 12px; }

.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--line-2); background: var(--bg-3); color: var(--fg-2);
  border-radius: 999px; padding: 5px 12px; font-size: 12.5px; cursor: pointer;
  transition: border-color .12s, color .12s;
}
.chip:hover { color: var(--fg); border-color: var(--fg-3); }
.chip[aria-pressed="true"] { background: rgba(110, 231, 200, 0.12); border-color: var(--acc); color: var(--acc); }
.chip .size { color: var(--fg-3); font-size: 11px; font-family: var(--mono); }
.chip[aria-pressed="true"] .size { color: var(--acc); opacity: .7; }
.chip.busy { opacity: .6; }

/* ---------- stats ---------- */
.statrow { display: flex; gap: 26px; flex-wrap: wrap; margin: 2px 0 4px; }
.stat { min-width: 90px; }
.stat .k { font-size: 11px; color: var(--fg-3); text-transform: uppercase; letter-spacing: 0.07em; }
.stat .v { font-size: 26px; font-family: var(--mono); letter-spacing: -0.02em; }
.stat .v small { font-size: 13px; color: var(--fg-2); }

/* ---------- table ---------- */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--fg-3); font-size: 11px; text-transform: uppercase; letter-spacing: 0.07em; font-weight: 600; }
th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
th.sortable:hover { color: var(--fg-2); }
th.sorted { color: var(--acc); }
td.num, th.num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
tbody tr:hover { background: var(--bg-3); }
tr.hl { background: rgba(110, 231, 200, 0.06); }

/* ---------- token visualiser ---------- */
.tokens { display: flex; flex-wrap: wrap; gap: 3px; max-height: 320px; overflow-y: auto; padding: 4px 2px; }
.tok {
  font-family: var(--mono); font-size: 12.5px; padding: 2px 5px; border-radius: 5px;
  cursor: default; white-space: pre; line-height: 1.7;
}
.tok:hover { outline: 1px solid var(--fg); }
.tok.wb { border-left: 1px solid var(--line-2); border-radius: 0 5px 5px 0; }
.tokinfo { font-family: var(--mono); font-size: 12px; color: var(--fg-2); margin-top: 10px; min-height: 18px; }
.tokinfo b { color: var(--acc); font-weight: 600; }

/* ---------- bars ---------- */
.bars { display: grid; gap: 9px; }
.bar-row { display: grid; grid-template-columns: 170px 1fr 86px; gap: 10px; align-items: center; font-size: 13px; }
.bar-row .name { color: var(--fg-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { background: var(--bg-3); border-radius: 5px; height: 16px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 5px; background: linear-gradient(90deg, var(--acc-2), var(--acc)); transition: width .25s; }
.bar-val { font-family: var(--mono); text-align: right; font-size: 12.5px; }
@media (max-width: 620px) { .bar-row { grid-template-columns: 110px 1fr 70px; } }

/* ---------- misc ---------- */
.muted { color: var(--fg-3); }
.small { font-size: 12.5px; }
code, .code { font-family: var(--mono); font-size: 12.5px; }
pre {
  background: var(--bg); border: 1px solid var(--line); border-radius: 9px;
  padding: 12px 14px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px;
  line-height: 1.6; margin: 10px 0; color: #cfd8ea;
}
.pill {
  display: inline-block; font-size: 10.5px; padding: 2px 8px; border-radius: 999px;
  border: 1px solid var(--line-2); color: var(--fg-2); text-transform: uppercase; letter-spacing: 0.06em;
}
.pill.laptop { color: var(--acc); border-color: rgba(110,231,200,.4); }
.pill.colab { color: var(--acc-2); border-color: rgba(122,162,255,.4); }
.pill.kaggle { color: var(--warn); border-color: rgba(255,207,110,.4); }
.pill.local-gpu { color: var(--bad); border-color: rgba(255,128,149,.4); }
.pill.frontier { color: var(--bad); border-color: rgba(255,128,149,.35); }
.pill.mid { color: var(--acc-2); border-color: rgba(122,162,255,.35); }
.pill.budget { color: var(--acc); border-color: rgba(110,231,200,.35); }

.notice {
  background: rgba(122,162,255,.07); border: 1px solid rgba(122,162,255,.28);
  border-radius: 10px; padding: 11px 14px; font-size: 13px; color: var(--fg-2); margin: 0 0 16px;
}
.notice b { color: var(--fg); }
.error {
  background: rgba(255,128,149,.08); border: 1px solid rgba(255,128,149,.35);
  color: #ffb3c0; border-radius: 10px; padding: 11px 14px; font-size: 13px; margin: 10px 0;
}

.loading { color: var(--fg-3); font-size: 13px; font-family: var(--mono); }

/* ---------- playground ---------- */
canvas { display: block; border-radius: 9px; background: var(--bg); border: 1px solid var(--line); }
.pg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 880px) { .pg-grid { grid-template-columns: 1fr; } }
.slider-row { display: grid; grid-template-columns: 116px 1fr 66px; gap: 10px; align-items: center; font-size: 12.5px; margin-bottom: 7px; }
.slider-row output { font-family: var(--mono); text-align: right; color: var(--acc); font-size: 12px; }
input[type="range"] { width: 100%; accent-color: var(--acc); }

.recipe { border: 1px solid var(--line); border-radius: 11px; padding: 15px 17px; background: var(--bg-2); }
.recipe h3 { margin: 0 0 3px; font-size: 15px; }
.recipe .tagline { color: var(--fg-2); font-size: 13.5px; margin: 0 0 10px; }
.recipe .meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; font-size: 11.5px; color: var(--fg-3); margin-bottom: 10px; }
.recipe ul { margin: 8px 0 0; padding-left: 18px; color: var(--fg-2); font-size: 13px; }
.recipe .gotcha { border-left: 2px solid var(--warn); padding-left: 10px; color: var(--fg-2); font-size: 12.5px; margin-top: 10px; }
.recipe .gotcha b { color: var(--warn); }

footer { border-top: 1px solid var(--line); padding: 22px 0 40px; color: var(--fg-3); font-size: 12.5px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- diff view ---------- */
.diffbox {
  font-family: var(--mono); font-size: 13px; line-height: 2;
  background: var(--bg); border: 1px solid var(--line); border-radius: 9px;
  padding: 12px 14px; white-space: pre-wrap; word-break: break-word;
}
.segtext { border-radius: 3px; }
.seg-a { box-shadow: inset 2px 0 0 var(--acc); background: rgba(110,231,200,.10); }
.seg-b { box-shadow: inset 2px 0 0 var(--acc-2); background: rgba(122,162,255,.10); }
.seg-both { box-shadow: inset 2px 0 0 var(--fg-3); }
span.seg { padding: 1px 6px; border-radius: 4px; font-family: var(--mono); font-size: 12px; }
span.seg.a { box-shadow: inset 2px 0 0 var(--acc); background: rgba(110,231,200,.10); }
span.seg.b { box-shadow: inset 2px 0 0 var(--acc-2); background: rgba(122,162,255,.10); }
span.seg.both { box-shadow: inset 2px 0 0 var(--fg-3); }
.pill.meas { color: var(--acc); border-color: rgba(110,231,200,.4); }
.pill.est { color: var(--fg-3); border-color: var(--line-2); }