/* Answer block: ```calc - a live calculator and data checker.
   Tokens in blocks.css; nothing here names a raw colour, so a palette
   (body[data-ab-palette]) and both themes restyle it for free.

   One quiet card in the reading column: labeled boxes on top, a hairline,
   then each result as its formula (typeset, measured symbols red, results
   blue) over a large tabular number, then a good / fix chip per check.

   Buttons and fields carry doubled classes: styles.css shapes every button
   at (0,3,1) !important and every text field's corner at (0,2,1) !important,
   and this block keeps its own shape. */

.ab-calc {
  position: relative;
  margin: 18px 0;
  padding: 14px 16px 16px;
  border: 1px solid var(--ab-hair);
  border-radius: var(--ab-radius);
  background: var(--ab-card);
  color: var(--ab-ink);
  font-family: var(--ab-font-ui);
  font-size: 14px;
  line-height: 1.45;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}
.ab-calc *, .ab-calc *::before, .ab-calc *::after { box-sizing: border-box; }
.ab-calc [hidden] { display: none !important; }
.ab-calc-sr {
  position: absolute !important;
  width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

/* ── head: title, Reset, Copy ─────────────────────────────────────────── */
.ab-calc-head {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 6px 12px; margin: 0 0 14px;
}
.ab-calc-title {
  flex: 1 1 180px; min-width: 0;
  font: 600 15px/1.35 var(--ab-font-ui);
  color: var(--ab-ink);
  overflow-wrap: anywhere;
}
.ab-calc-title.is-quiet {
  font: 500 11.5px/1.3 var(--ab-font-mono);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ab-muted);
}
.ab-calc-tools { display: flex; gap: 6px; flex: 0 0 auto; }
.ab-calc .ab-calc-tools button.ab-calc-btn.ab-calc-btn {
  appearance: none;
  height: 30px; min-height: 0 !important; min-width: 0;
  padding: 0 12px !important;
  border: 1px solid var(--ab-hair) !important;
  border-radius: 999px !important;
  background: transparent !important;
  box-shadow: none !important;
  color: var(--ab-muted) !important;
  font: 500 12.5px/1 var(--ab-font-ui) !important;
  letter-spacing: 0 !important; text-transform: none !important;
  opacity: 1 !important;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}
.ab-calc .ab-calc-tools button.ab-calc-btn.ab-calc-btn:hover {
  color: var(--ab-ink) !important;
  border-color: var(--ab-rule) !important;
  background: var(--ab-paper) !important;
}
.ab-calc .ab-calc-tools button.ab-calc-btn.ab-calc-btn:focus-visible {
  outline: 2px solid var(--ab-accent) !important;
  outline-offset: 2px;
}
.ab-calc .ab-calc-tools button.ab-calc-btn.ab-calc-btn.is-done {
  color: var(--ab-good) !important;
  border-color: var(--ab-good) !important;
}

/* "Example numbers. Type your own." */
.ab-calc-tag {
  display: block;
  width: fit-content; max-width: 100%;
  margin: -4px 0 14px !important;
  padding: 4px 9px;
  border-radius: var(--ab-radius-sm);
  background: var(--ab-warn-soft);
  color: var(--ab-warn);
  font: 600 11.5px/1.35 var(--ab-font-ui);
  letter-spacing: 0.01em;
}

/* ── inputs ───────────────────────────────────────────────────────────── */
.ab-calc-ins {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 136px), 1fr));
  gap: 12px 14px;
}
.ab-calc-in { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.ab-calc-in.has-range { grid-column: 1 / -1; }
.ab-calc-label {
  display: flex; align-items: baseline; gap: 7px; min-width: 0;
  color: var(--ab-ink);
  cursor: pointer;
}
.ab-calc-sym {
  flex: 0 0 auto;
  font-family: var(--ab-font-math);
  font-style: italic;
  font-size: 18px;
  line-height: 1;
  color: var(--ab-given);
}
.ab-calc-sym.is-word { font-style: normal; }
.ab-calc-sym sub { font-size: 0.62em; font-style: normal; line-height: 0; vertical-align: -0.28em; }
.ab-calc-in.is-measure .ab-calc-sym { color: var(--ab-measure); }
.ab-calc-in.is-calc .ab-calc-sym { color: var(--ab-calc); }
.ab-calc-in.is-ignore .ab-calc-sym { color: var(--ab-ignore); }
.ab-calc-name {
  min-width: 0;
  font-size: 12.5px; line-height: 1.3;
  color: var(--ab-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.ab-calc-row { display: flex; align-items: center; gap: 14px; min-width: 0; }
.ab-calc-box {
  display: flex; align-items: center;
  flex: 1 1 auto; min-width: 0;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--ab-rule);
  border-radius: 10px;
  background: var(--ab-paper);
  cursor: text;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.ab-calc-in.has-range .ab-calc-box { flex: 0 0 132px; }
.ab-calc .ab-calc-box input.ab-calc-field.ab-calc-field {
  flex: 1 1 auto; min-width: 0; width: 100%; height: 100%;
  margin: 0; padding: 0;
  border: 0 !important; border-radius: 0 !important;
  background: transparent !important; box-shadow: none !important;
  outline: none !important;
  color: var(--ab-ink);
  /* 16px: iOS zooms the page into any field set smaller */
  font: 500 16px/1.2 var(--ab-font-ui);
  letter-spacing: 0;
}
.ab-calc .ab-calc-box input.ab-calc-field.ab-calc-field { font-variant-numeric: tabular-nums lining-nums; }
.ab-calc .ab-calc-box input.ab-calc-field.ab-calc-field::placeholder { color: var(--ab-muted); opacity: 0.75; font-weight: 400; }
.ab-calc-unit {
  flex: 0 0 auto;
  margin-left: 8px;
  max-width: 50%;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: 13.5px;
  color: var(--ab-muted);
}
.ab-calc-unit.is-prefix { margin: 0 4px 0 0; font-size: 15px; color: var(--ab-ink); }
.ab-calc-box:focus-within {
  border-color: var(--ab-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ab-accent) 22%, transparent);
}
.ab-calc-in.is-measure .ab-calc-box:focus-within {
  border-color: var(--ab-measure);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ab-measure) 22%, transparent);
}
.ab-calc-in.is-bad .ab-calc-box { border-color: var(--ab-warn); }
.ab-calc-msg { font-size: 12px; line-height: 1.35; color: var(--ab-warn); }

/* the slider: a hairline track that fills blue up to the thumb */
.ab-calc .ab-calc-range {
  -webkit-appearance: none; appearance: none;
  flex: 1 1 auto; min-width: 0;
  height: 28px; margin: 0; padding: 0;
  background: transparent;
  cursor: pointer;
  --abc-fill: 50%;
}
.ab-calc .ab-calc-range:focus { outline: none; }
.ab-calc .ab-calc-range::-webkit-slider-runnable-track {
  height: 4px; border-radius: 999px;
  background: linear-gradient(to right, var(--ab-calc) var(--abc-fill), var(--ab-rule) var(--abc-fill));
}
.ab-calc .ab-calc-range::-moz-range-track { height: 4px; border-radius: 999px; background: var(--ab-rule); }
.ab-calc .ab-calc-range::-moz-range-progress { height: 4px; border-radius: 999px; background: var(--ab-calc); }
.ab-calc .ab-calc-range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; margin-top: -8px;
  border-radius: 50%;
  border: 2px solid var(--ab-calc);
  background: var(--ab-card);
  box-shadow: 0 1px 3px color-mix(in srgb, var(--ab-ink) 22%, transparent);
}
.ab-calc .ab-calc-range::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid var(--ab-calc);
  background: var(--ab-card);
}
.ab-calc .ab-calc-range:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px color-mix(in srgb, var(--ab-calc) 28%, transparent); }
.ab-calc .ab-calc-range:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 4px color-mix(in srgb, var(--ab-calc) 28%, transparent); }

/* ── results ──────────────────────────────────────────────────────────── */
.ab-calc-outs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
  gap: 18px 28px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--ab-hair);
}
.ab-calc-ins:empty + .ab-calc-outs, .ab-calc-head + .ab-calc-outs { margin-top: 0; padding-top: 0; border-top: 0; }
.ab-calc-out { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.ab-calc-olabel {
  /* the model's own words, case kept: "n" and "N" are different things */
  font: 500 12.5px/1.35 var(--ab-font-ui);
  color: var(--ab-muted);
  overflow-wrap: anywhere;
}
.ab-calc-formula {
  min-width: 0;
  overflow-x: auto; overflow-y: hidden;
  padding: 3px 0;
  font-size: 15px;
  color: var(--ab-ink);
  scrollbar-width: thin;
}
.ab-calc-formula .katex { font-size: 1.12em; }
.ab-calc-formula.is-plain { font: italic 17px/1.4 var(--ab-font-math); }
.ab-calc-formula.is-source {
  font: 12.5px/1.45 var(--ab-font-mono);
  color: var(--ab-muted);
  white-space: pre-wrap; overflow-wrap: anywhere;
}
.ab-calc .ab-r-measure { color: var(--ab-measure); }
.ab-calc .ab-r-calc { color: var(--ab-calc); }
.ab-calc .ab-r-given { color: var(--ab-given); }
.ab-calc .ab-r-ignore { color: var(--ab-ignore); }

.ab-calc-res {
  display: flex; flex-wrap: wrap; align-items: baseline;
  gap: 0 8px; min-width: 0;
}
.ab-calc-eq { font: 400 22px/1 var(--ab-font-math); color: var(--ab-muted); }
.ab-calc-val {
  font: 650 30px/1.15 var(--ab-font-ui);
  letter-spacing: -0.01em;
  color: var(--ab-calc);
  overflow-wrap: anywhere;
  min-width: 0;
}
.ab-calc-val { font-variant-numeric: tabular-nums lining-nums; }
.ab-calc-ounit { font-size: 15px; font-weight: 500; color: var(--ab-muted); }
.ab-calc-money { margin-right: -6px; font: 600 22px/1.15 var(--ab-font-ui); color: var(--ab-calc); }
.ab-calc-out.is-unknown .ab-calc-money { color: var(--ab-muted); }
.ab-calc-out.is-unknown .ab-calc-val { color: var(--ab-muted); font-weight: 500; }
.ab-calc-why { font-size: 12.5px; line-height: 1.4; color: var(--ab-muted); }
.ab-calc-out.is-error .ab-calc-why { color: var(--ab-warn); }

/* ── checks ───────────────────────────────────────────────────────────── */
/* The chat's own list rules are (0,3,2) and indent every <ul> in a reply. */
.ab-calc ul.ab-calc-checks {
  list-style: none !important;
  display: flex; flex-direction: column; gap: 6px;
  margin: 16px 0 0 !important; padding: 0 !important;
}
.ab-calc ul.ab-calc-checks > li.ab-calc-check {
  display: flex; align-items: flex-start; gap: 9px;
  margin: 0 !important; padding: 8px 12px 8px 9px;
  border-radius: 10px;
  font: 500 13.5px/1.4 var(--ab-font-ui);
  color: var(--ab-ink);
  background: var(--ab-paper);
  transition: background-color 0.2s ease;
}
.ab-calc ul.ab-calc-checks > li.ab-calc-check::marker { content: none; }
.ab-calc-chk-ico {
  flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px; margin-top: 0.5px;
  border-radius: 50%;
  color: var(--ab-muted);
}
.ab-calc-ico { width: 14px; height: 14px; display: block; }
.ab-calc-chk-txt { min-width: 0; overflow-wrap: anywhere; }
.ab-calc-check.is-good { background: var(--ab-good-soft); }
.ab-calc-check.is-good .ab-calc-chk-ico { background: var(--ab-good); color: var(--ab-card); }
.ab-calc-check.is-warn { background: var(--ab-warn-soft); }
.ab-calc-check.is-warn .ab-calc-chk-ico { background: var(--ab-warn); color: var(--ab-card); }
.ab-calc-check.is-wait, .ab-calc-check.is-error { color: var(--ab-muted); font-weight: 400; }
.ab-calc ul.ab-calc-checks > li.ab-calc-check.is-error { background: transparent; border: 1px dashed var(--ab-rule); }

/* ── colour key and notes ─────────────────────────────────────────────── */
.ab-calc-key {
  display: flex; flex-wrap: wrap; gap: 4px 16px;
  margin-top: 14px;
  font-size: 12px; line-height: 1.4;
  color: var(--ab-muted);
}
.ab-calc-key-item { display: inline-flex; align-items: center; gap: 6px; }
.ab-calc-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--ab-given); }
.ab-calc-key-item.is-measure .ab-calc-dot { background: var(--ab-measure); }
.ab-calc-key-item.is-calc .ab-calc-dot { background: var(--ab-calc); }
.ab-calc-key-item.is-ignore .ab-calc-dot { background: var(--ab-ignore); }
.ab-calc p.ab-calc-note {
  margin: 10px 0 0 !important;
  font: 400 12.5px/1.5 var(--ab-font-ui);
  color: var(--ab-muted);
  overflow-wrap: anywhere;
}
.ab-calc p.ab-calc-note.is-skipped { font-style: italic; }

/* ── phones ───────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .ab-calc { padding: 12px 12px 14px; }
  /* two short number boxes side by side on a phone */
  .ab-calc-ins { grid-template-columns: repeat(auto-fill, minmax(min(100%, 112px), 1fr)); gap: 10px 10px; }
  .ab-calc-in.has-range .ab-calc-box { flex-basis: 108px; }
  .ab-calc-row { gap: 10px; }
  .ab-calc-val { font-size: 27px; }
}

@media (prefers-reduced-motion: reduce) {
  .ab-calc .ab-calc-tools button.ab-calc-btn.ab-calc-btn,
  .ab-calc-box,
  .ab-calc ul.ab-calc-checks > li.ab-calc-check { transition: none !important; }
}