/* oneground teaser — style.css
   ---------------------------------------------------------------------------
   Design tokens are docs/design/tokens.css, copied verbatim into :root below.
   They are copied rather than @import-ed because this page has to open from
   file:// with no requests of any kind, and because site/teaser/ merges as a
   directory add and must not reach up into the repo at runtime.

   Type: docs/design/tokens.md loads both families from the system only. No
   webfont is bundled here (site/teaser/fonts/README.md says why), so the two
   stacks below are the fallbacks tokens.css already defines, and the layout is
   built to survive them rather than to depend on a face.

   The three outcome colours carry meaning and appear only where an outcome is
   being stated. The copies ramp is a separate, derived scale; --ochre itself
   is the accent and never fills a verdict cell.
*/

:root {
  --slate:  #1B2432;
  --panel:  #243040;
  --ink:    #E7EAEF;
  --muted:  #8B96A5;
  --ochre:  #C99A3B;

  --teal:   #4FC1AD;   /* meets */
  --coral:  #E36C5E;   /* fails */
  --amber:  #D9A441;   /* couldnt_check */

  --font-ui:   "Space Grotesk", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  /* Derived, not tokens: the closure ramp. Ordered cool -> warm so more
     copies reads as more, and deliberately not any of the outcome colours.
     Kept in one place because app.js reads these same four values. */
  --copies-1: #3D7EB8;
  --copies-2: #7FA3B0;
  --copies-3: #B79C63;
  --copies-4: #E0A83A;

  --edge: #33415580;
  --rule: #2F3D50;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--slate);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.55;
  overflow-x: hidden;
  /* Config strings like semantic_sharded[M=32,centroids=256,...] are single
     unbreakable words wider than a phone. break-word wraps exactly those and
     leaves ordinary prose alone. */
  overflow-wrap: break-word;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------------------------------------------------------------- sections */

section {
  min-height: 100vh;
  min-height: 100svh;
  padding: 3.5rem clamp(1rem, 4vw, 3.5rem) 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border-bottom: 1px solid var(--rule);
  position: relative;
}

/* A flex item defaults to min-width:auto and refuses to shrink below its
   content, which is how one <pre> of unwrappable text widens the page. */
section > *, footer > *, .panel > *, figure > * { min-width: 0; max-width: 100%; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ochre);
  margin: 0 0 0.6rem;
}

h1, h2 {
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 0.5rem;
  line-height: 1.12;
  text-wrap: balance;
}

h1 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); max-width: 24ch; }
h2 { font-size: clamp(1.4rem, 2.8vw, 2.1rem); max-width: 26ch; }

h1 em, h2 em { font-style: normal; color: var(--ochre); }

h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: 0.01em;
}

.lede {
  color: var(--muted);
  max-width: 58ch;
  margin: 0;
  font-size: clamp(0.92rem, 1.05vw, 1rem);
}

.lede strong { color: var(--ink); font-weight: 500; }

/* A source line: what field, in what file, this number came from. Every
   figure on the page has one, because a number without its source is the
   thing this project exists not to publish. */
.source {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0;
  overflow-wrap: anywhere;
}

.source a { color: var(--muted); }

a { color: var(--ochre); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 2px;
}

/* ------------------------------------------------------------------ canvas */

.stage {
  position: relative;
  flex: 1 1 auto;
  min-height: 15rem;
  max-height: 34rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: #161D28;
  overflow: hidden;
}

.stage canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: pan-y;
}

.stage figcaption {
  position: absolute;
  left: 0.75rem;
  bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  background: #161D28C8;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  pointer-events: none;
}

figure { margin: 0; display: flex; flex-direction: column; flex: 1 1 auto; min-height: 0; }

/* ------------------------------------------------------- hero: the ground */

.ground-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 21rem;
  gap: 1.25rem;
  flex: 1 1 auto;
  min-height: 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1rem 1.1rem;
}

.readout { display: flex; flex-direction: column; gap: 0.7rem; }

.slider-row label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.slider-row output {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--ochre);
}

input[type="range"] {
  width: 100%;
  margin: 0;
  accent-color: var(--ochre);
  height: 2rem;               /* a touch target, not a hairline */
}

.counters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.counter { min-width: 0; }

.counter .value {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.5vw, 1.2rem);
  color: var(--ink);
  display: block;
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.counter .label {
  font-size: 0.63rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: block;
}

.legend { display: flex; flex-direction: column; gap: 0.15rem; }

.legend-row {
  display: grid;
  grid-template-columns: 0.8rem 1fr auto;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.76rem;
  line-height: 1.5;
  font-family: var(--font-mono);
}

.legend-row .swatch { width: 0.8rem; height: 0.8rem; border-radius: 2px; }
.legend-row .pct { color: var(--muted); font-variant-numeric: tabular-nums; }

.bar {
  height: 3px;
  background: var(--rule);
  border-radius: 2px;
  overflow: hidden;
}
.bar > i { display: block; height: 100%; }

/* Wide enough that the sentence at the reference epsilon sits on one line;
   it grows to three at epsilon 0, where it says something longer and the
   section simply gets taller. min-height keeps that from being a jump. */
.caption {
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  line-height: 1.35;
  margin: 0;
  max-width: 78ch;
  min-height: 2.7em;
  text-wrap: pretty;
}

.caption b { color: var(--ochre); font-weight: 600; }

.modes { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.modes-row { display: flex; align-items: baseline; justify-content: space-between; gap: 0.6rem; }
.modes-row h3 { margin: 0; }

button, .chip {
  font: inherit;
  font-size: 0.78rem;
  color: var(--ink);
  background: #2C3A4D;
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
}

button:hover { border-color: var(--ochre); }
button[aria-pressed="true"] { background: var(--ochre); color: #17202C; border-color: var(--ochre); }

/* --------------------------------------------------- one query, every hop */

.query-grid {
  display: grid;
  grid-template-columns: 22rem minmax(0, 1fr);
  gap: 1.25rem;
  flex: 1 1 auto;
  min-height: 0;
}
.query-grid > .stage { min-height: 0; }

/* The picker panel is a column: heading, the scrolling list, then the
   surprise button pinned under it. Only the list scrolls. */
.query-grid > .panel { display: flex; flex-direction: column; min-height: 0; }

.query-list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 5rem;
  max-height: 15rem;
  margin: 0.5rem -0.35rem 0;
  padding: 0 0.35rem;
}

/* The line and the trace under the picture keep their height; the picture
   above them gives up space instead. A squeezed flex row was overlapping. */
.query-readout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 21rem;
  gap: 1.25rem;
  flex: 0 0 auto;
  align-items: start;
}

.query-list button {
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  border-left: 2px solid var(--rule);
  border-radius: 0 3px 3px 0;
  padding: 0.4rem 0.55rem;
  line-height: 1.3;
  color: var(--muted);
  display: block;
  width: 100%;
}

.query-list button:hover { color: var(--ink); border-left-color: var(--ochre); }

.query-list button[aria-pressed="true"] {
  background: #2C3A4D;
  color: var(--ink);
  border-left-color: var(--ochre);
}

.query-list .miss {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  display: block;
}

/* The trace: score -> route -> neighbours. Steps light in order as the
   animation reaches them; each one names the field it is reading. */
.trace { display: flex; flex-direction: column; gap: 0.35rem; margin: 0; padding: 0.7rem 0.85rem; list-style: none; }

.trace li {
  display: grid;
  grid-template-columns: 1.3rem minmax(0, 1fr);
  gap: 0.5rem;
  align-items: start;
  opacity: 0.32;
  transition: opacity 220ms ease;
}

.trace li[data-on="1"] { opacity: 1; }

.trace .n {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ochre);
  border: 1px solid var(--rule);
  border-radius: 50%;
  width: 1.3rem;
  height: 1.3rem;
  display: grid;
  place-items: center;
}

.trace li[data-on="1"] .n { border-color: var(--ochre); }
.trace .what { font-size: 0.8rem; line-height: 1.35; }
.trace .detail { font-family: var(--font-mono); font-size: 0.68rem; color: var(--muted); display: block; }

.verdict-line {
  font-size: clamp(1rem, 2vw, 1.3rem);
  margin: 0;
  text-wrap: balance;
}
.verdict-line b { color: var(--ochre); font-weight: 600; }

/* ------------------------------------------------------------- the verdict */

.summary-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.chip {
  font-family: var(--font-mono);
  cursor: default;
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
}
.chip::before { content: ""; width: 0.55rem; height: 0.55rem; border-radius: 50%; background: currentColor; }
.chip.meets { color: var(--teal); }
.chip.fails { color: var(--coral); }
.chip.couldnt_check { color: var(--amber); }

.families { display: grid; grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); gap: 1rem; }

.family h3 { display: flex; justify-content: space-between; gap: 0.5rem; align-items: baseline; }
.family h3 .fam { font-family: var(--font-mono); font-size: 0.9rem; }
.family .blurb { color: var(--muted); font-size: 0.78rem; margin: 0 0 0.7rem; }

/* A configuration is one row until you ask for more. The four columns are
   the same on the header and on every row, so the card reads as a table. */
.opt-head, .opt > summary {
  display: grid;
  grid-template-columns: 0.9rem minmax(0, 1fr) 4.2rem 3.2rem 5.4rem;
  gap: 0.4rem;
  align-items: baseline;
}

.opt-head {
  font-size: 0.63rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-bottom: 0.3rem;
}

.opt { border-top: 1px solid var(--rule); }

.opt > summary {
  cursor: pointer;
  padding: 0.45rem 0;
  list-style: none;
  font-size: 0.76rem;
}
.opt > summary::-webkit-details-marker { display: none; }
.opt > summary:hover .cfg { color: var(--ink); }
.opt[open] > summary .cfg { color: var(--ink); }

/* The caret is its own column, not a ::before on the config name: the name
   wraps, and a marker inside a wrapping run ends up on a line of its own. */
.opt > summary .caret {
  color: var(--ochre);
  transition: transform 120ms ease;
  line-height: 1;
}
.opt[open] > summary .caret { transform: rotate(90deg); }

.opt .cfg {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  overflow-wrap: break-word;   /* the params string wraps at its separators */
  min-width: 0;
}

.opt > summary .m,
.opt-head .m {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--ink);
}
.opt-head .m { color: var(--muted); }

.opt > summary .chip {
  padding: 0.1rem 0.4rem;
  font-size: 0.66rem;
  justify-self: end;
  background: transparent;
  border-color: transparent;
}

.cells { display: flex; flex-direction: column; gap: 0.2rem; padding: 0.2rem 0 0.7rem 0.8rem; }

.cell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.1rem;
  font-size: 0.76rem;
  padding-bottom: 0.3rem;
}
.cell .k { color: var(--muted); min-width: 0; }
.cell .v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
  min-width: 0;
}
.cell.meets .v { color: var(--teal); }
.cell.fails .v { color: var(--coral); }
.cell.couldnt_check .v { color: var(--amber); }
/* Source fields are file paths and config strings with no spaces in them, so
   they need `anywhere` (not `break-word`) to count as narrow when the grid
   works out its track sizes -- otherwise one long config string sets the
   width of the whole card and the page scrolls sideways on a phone. */
.src {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--muted);
  overflow-wrap: anywhere;
  min-width: 0;
}
.cell .src { grid-column: 1 / -1; }

/* The recommendation and the latency panel: two lifted blocks between the
   summary chips and the family tables. */
.rec, .settle { display: flex; flex-direction: column; gap: 0.6rem; }

.rec-config { margin: 0; font-size: 1rem; }
.rec-config .mono { color: var(--teal); overflow-wrap: anywhere; }

.rec-measured {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.8rem;
  margin: 0.2rem 0;
}

.rec-num .value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  color: var(--ink);
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.rec-num .label {
  display: block;
  font-size: 0.63rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.15rem;
}

.runner-up {
  margin: 0;
  font-size: 0.85rem;
  border-top: 1px solid var(--rule);
  padding-top: 0.6rem;
}
.runner-up .mono { color: var(--ink); }

.settle table { margin-top: 0.2rem; }
.settle td:first-child { color: var(--muted); font-size: 0.78rem; }
td.nowrap { white-space: nowrap; }

/* Same pairing as the receipt's value rows: the note belongs to the row above
   it, so the rule goes under the pair. */
.settle-table tr:not(.dnote) td { border-bottom: none; padding-bottom: 0.1rem; }
.settle-table .dnote td { padding-top: 0; padding-bottom: 0.5rem; }
.settle-rule {
  margin: 0;
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  color: var(--ink);
  text-wrap: balance;
}

.log { display: flex; flex-direction: column; gap: 0.8rem; margin: 0; }
.log blockquote {
  margin: 0;
  padding-left: 0.85rem;
  border-left: 2px solid var(--ochre);
  font-size: 0.92rem;
  max-width: 78ch;
}
.log .src { display: block; margin-top: 0.25rem; }

/* ------------------------------------------------------------- the receipt */

.receipt-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); gap: 1rem; }

table { border-collapse: collapse; width: 100%; font-size: 0.76rem; }
th, td { text-align: left; padding: 0.35rem 0.5rem 0.35rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em; }
td.mono, .mono { font-family: var(--font-mono); overflow-wrap: anywhere; }
td.same { color: var(--teal); }
td.differs { color: var(--ochre); }
td.couldnt_check { color: var(--amber); }

/* A value row and its delta line are one row of the table, so the rule goes
   under the pair rather than between them. */
#receipt-values tr:not(.dnote) td { border-bottom: none; padding-bottom: 0.1rem; }
#receipt-values .dnote td { padding-top: 0; padding-bottom: 0.4rem; }
#receipt-values td:first-child { padding-right: 0.6rem; }

pre {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: #161D28;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.9rem 1rem;
  margin: 0;
  max-width: 100%;
  overflow-x: auto;
  color: var(--ink);
}
pre .c { color: var(--muted); }

/* ------------------------------------------------------------- the promise */

#promise { justify-content: center; align-items: flex-start; }

.promise-text {
  font-size: clamp(1.05rem, 2.2vw, 1.5rem);
  line-height: 1.35;
  max-width: 46ch;
  margin: 0;
  text-wrap: pretty;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.promise-text p { margin: 0; }

/* What is shipped reads at full weight; what is dated but not yet true reads
   quieter. The distinction is the point of the block. */
.promise-text .later { color: var(--muted); font-size: 0.82em; }
.promise-text a { color: var(--ochre); }
.promise-text .mono { font-family: var(--font-mono); font-size: 0.92em; }

.suite {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  margin: 1.6rem 0 0;
}

footer {
  padding: 2rem clamp(1rem, 4vw, 3.5rem) 3rem;
  color: var(--muted);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-width: 84ch;
}

/* --------------------------------------------------------------- loading */

#boot {
  position: fixed;
  inset: 0;
  background: var(--slate);
  display: grid;
  place-items: center;
  z-index: 10;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
  padding: 2rem;
}
#boot[hidden] { display: none; }

.err { color: var(--coral); }

@media (min-width: 901px) {
  /* Value names are single words with underscores; anywhere-wrapping splits
     them mid-word, which reads as a typo. There is room not to, above 900px.
     Not the delta line: it is a colspan cell and so also a first child, and
     nowrap on it drags the whole table wider than its panel. */
  #receipt-values tr:not(.dnote) td:first-child { white-space: nowrap; }

  /* Sized from what the viewport has left after the copy, not from a flat
     fraction of it, so the sections still fit a short window. */
  .ground-grid, .query-grid {
    height: clamp(15rem, calc(100svh - 30rem), 30rem);
    flex: 0 0 auto;
  }
  /* The query section carries a trace panel where the hero carries a two-line
     caption, so it has less room for its picture. */
  .query-grid { height: clamp(14rem, calc(100svh - 33.5rem), 28rem); }
  .readout { overflow-y: auto; }
  .stage { max-height: none; min-height: 0; }
}

/* ---------------------------------------------------------------- mobile
   Tested at 390 px. The two side-by-side grids stack, the canvas keeps a
   fixed share of the viewport rather than fighting the panel for it, and the
   slider keeps its 2rem touch target. */

@media (max-width: 900px) {
  .ground-grid, .query-grid, .query-readout { grid-template-columns: minmax(0, 1fr); }
  .query-list { max-height: 15rem; flex: 0 0 auto; }
  /* Four columns do not fit a phone: the config name wraps to three lines and
     the numbers lose their header. Two rows instead, and each number carries
     its own label since the header row is gone. */
  .opt-head { display: none; }
  /* Flex, not grid: fixed tracks on a 390 px card squeezed "recall@10" into a
     column one character wide. Here the config takes the first line and the
     numbers wrap onto the second, each carrying its own label. */
  .opt > summary {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.15rem 0.75rem;
  }
  .opt > summary > .caret { flex: 0 0 auto; }
  .opt > summary > .cfg { flex: 1 1 8rem; }
  .opt > summary > .m { flex: 0 0 auto; text-align: left; }
  .opt > summary > .m:first-of-type { margin-left: 1.35rem; }
  .opt > summary > .chip { flex: 0 0 auto; }
  .opt > summary .m::before {
    content: attr(data-l) " ";
    color: var(--muted);
    font-size: 0.66rem;
  }

  .query-grid > .stage { order: -1; }
  .stage, .query-grid > .stage { min-height: 42vh; max-height: 52vh; flex: 0 0 auto; }
  section { min-height: auto; padding-top: 3rem; }
  .counters { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .readout { overflow: visible; }
}

@media (max-width: 420px) {
  body { font-size: 15px; }
  .counter .value { font-size: 1.05rem; }
  .counters { gap: 0.4rem; }
}