/* ─────────────────────────────────────────────────────────────────────
   Wholesome Paper · Usage calculator
   Extends styles.css. No new palette, no new typefaces, no radii —
   everything reads off the existing --ink / --paper / --brick / --forest
   / --brass tokens so the section sits inside the page, not on top of it.
   ───────────────────────────────────────────────────────────────────── */

.calc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 27rem);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}
@media (max-width: 62rem) { .calc-grid { grid-template-columns: minmax(0, 1fr); } }

/* BLOCKS ─────────────────────────────────────────────────────────────
   A block is a titled band of controls separated by hairlines, not a card. */
.calc-block { border-top: var(--rule-strong); padding-block: clamp(1.5rem, 3vw, 2.25rem); }
.calc-block:first-child { border-top: 0; padding-top: 0; }
.calc-block-head { display: flex; align-items: baseline; gap: 0.75rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.calc-block-n {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.22em;
  color: var(--brass-ink); font-variant-numeric: tabular-nums;
}
.calc-block-t { font-family: var(--serif); font-size: 1.2rem; font-weight: 500; font-variation-settings: "opsz" 24; margin: 0; }
.calc-block-note { color: var(--ink-soft); font-size: 0.9rem; margin: -0.6rem 0 1.25rem; max-width: 58ch; }

/* CONTROLS ───────────────────────────────────────────────────────── */
.calc-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: 1.25rem 1.5rem; }
/* An author `display` beats the browser's built-in [hidden]{display:none},
   so every panel we hide with el.hidden needs this or all three segments
   render at once. */
[hidden] { display: none !important; }
.calc-seg { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.75rem; }

.calc-check { display: flex; align-items: center; gap: 0.6rem; align-self: end; padding-bottom: 0.55rem; }
.calc-check input { width: 1rem; height: 1rem; accent-color: var(--brick); flex: none; }
.calc-check label { font-size: 0.9rem; color: var(--ink-soft); }

.calc-range { display: flex; align-items: center; gap: 0.9rem; padding-block: 0.4rem 0.1rem; }
.calc-range input[type="range"] { flex: 1; min-width: 0; accent-color: var(--brick); height: 1.25rem; }
.calc-range output {
  font-family: var(--mono); font-size: 12px; font-variant-numeric: tabular-nums;
  min-width: 3ch; text-align: right;
}

/* PRODUCT PICKER ─────────────────────────────────────────────────── */
.calc-pick { display: grid; grid-template-columns: 9rem minmax(0, 1fr) 6rem; gap: 1.25rem; align-items: end;
  padding-block: 1.1rem; border-top: var(--rule); }
.calc-pick:first-child { border-top: 0; padding-top: 0; }
@media (max-width: 40rem) {
  /* One column: beside a 6rem price box the product name was cut off
     ("Cutlery Pocket Napkin · NK-") and the spec ran four lines deep. */
  .calc-pick { grid-template-columns: minmax(0, 1fr); gap: 0.85rem; }
  .calc-pick > .field { max-width: 11rem; align-items: stretch; }
  .calc-pick-cat { grid-column: 1 / -1; }
}
.calc-pick--calib { grid-template-columns: 9rem 1fr 1fr; }
@media (max-width: 40rem) { .calc-pick--calib { grid-template-columns: 1fr 1fr; } .calc-pick--calib > .field { max-width: none; } }
.calc-pick-cat { font-family: var(--serif); font-size: 1.05rem; font-weight: 500; padding-bottom: 0.55rem; }
.calc-pick-spec { font-family: var(--mono); font-size: 10.5px; line-height: 1.6; color: var(--ink-soft); margin-top: 0.5rem; }

.calc-tag {
  display: inline-block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; padding: 0.2rem 0.4rem; margin-left: 0.4rem;
  border: 1px solid color-mix(in srgb, var(--brass) 55%, transparent); color: var(--brass-ink);
}
.calc-tag--check { border-color: color-mix(in srgb, var(--brick) 45%, transparent); color: var(--brick); }
.calc-tag--good { border-color: color-mix(in srgb, var(--forest) 45%, transparent); color: var(--forest); }

/* FOLDS ──────────────────────────────────────────────────────────── */
.calc-fold { border-top: var(--rule); }
.calc-fold > summary {
  list-style: none; cursor: pointer; display: flex; align-items: baseline; gap: 0.7rem;
  padding-block: 1rem; font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-soft); transition: color 180ms ease;
}
.calc-fold > summary::-webkit-details-marker { display: none; }
.calc-fold > summary:hover { color: var(--ink); }
.calc-fold > summary::before { content: "+"; font-family: var(--mono); color: var(--brass); font-size: 13px; }
.calc-fold[open] > summary::before { content: "–"; }
.calc-fold[open] > summary { color: var(--ink); }
.calc-fold-body { padding-bottom: 1.75rem; }

/* RESULTS RAIL ───────────────────────────────────────────────────── */
.calc-out { position: sticky; top: 5.5rem; border: var(--rule-strong); background: var(--paper); }
@media (max-width: 62rem) { .calc-out { position: static; } }
.calc-out-head { padding: 1.5rem 1.5rem 1.25rem; border-bottom: var(--rule); }
.calc-out-t { font-family: var(--serif); font-size: 1.25rem; font-weight: 500; font-variation-settings: "opsz" 24; margin: 0; }
.calc-out-drivers { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.04em; color: var(--ink-soft); margin: 0.6rem 0 0; }

.calc-headline { padding: 1.5rem; background: var(--ink); color: var(--paper); }
.calc-headline-k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.24em; text-transform: uppercase; opacity: 0.62; }
.calc-headline-v {
  font-family: var(--serif); font-size: clamp(2.4rem, 6vw, 3.2rem); line-height: 1;
  font-weight: 500; font-variation-settings: "opsz" 96; margin-top: 0.35rem; font-variant-numeric: tabular-nums;
}
.calc-headline-n { font-size: 0.875rem; opacity: 0.78; margin-top: 0.5rem; }

.calc-pair { display: grid; grid-template-columns: 1fr 1fr; border-bottom: var(--rule); }
.calc-pair > div { padding: 1.1rem 1.5rem; }
.calc-pair > div + div { border-left: var(--rule); }
.calc-pair-k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-soft); }
.calc-pair-v { font-family: var(--serif); font-size: 1.5rem; font-weight: 500; margin-top: 0.3rem; font-variant-numeric: tabular-nums; }
.calc-pair-n { font-size: 0.8rem; color: var(--ink-soft); margin-top: 0.15rem; }

.calc-sec { padding: 1.35rem 1.5rem; border-bottom: var(--rule); }
.calc-sec:last-child { border-bottom: 0; }
.calc-sec-t {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-soft); margin: 0 0 0.9rem;
}

/* tables */
.calc-scroll { overflow-x: auto; margin-inline: -0.25rem; }
.calc-tbl { width: 100%; border-collapse: collapse; min-width: 19rem; }
.calc-tbl th {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft); font-weight: 500; text-align: right; padding: 0 0.3rem 0.55rem;
  border-bottom: var(--rule-strong); white-space: nowrap;
}
.calc-tbl th:first-child { text-align: left; }
.calc-tbl td {
  padding: 0.6rem 0.3rem; border-bottom: var(--rule); text-align: right;
  font-family: var(--mono); font-size: 11.5px; font-variant-numeric: tabular-nums; vertical-align: top;
}
.calc-tbl td:first-child { text-align: left; font-family: var(--sans); font-size: 0.875rem; }
.calc-tbl tbody tr:last-child td { border-bottom: 0; }
.calc-tbl tfoot td { border-top: var(--rule-strong); border-bottom: 0; padding-top: 0.7rem; font-weight: 600; }
.calc-ref { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; color: var(--ink-soft); margin-top: 0.2rem; }
.calc-dot { display: inline-block; width: 0.5rem; height: 0.5rem; margin-right: 0.55rem; vertical-align: 0.05rem; }

/* bars */
.calc-bar { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr) 3.75rem; gap: 0.6rem; align-items: center; padding-block: 0.3rem; }
.calc-bar-n { font-size: 0.8rem; color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.calc-bar-track { height: 0.75rem; background: color-mix(in srgb, var(--ink) 7%, transparent); }
.calc-bar-fill { height: 100%; }
.calc-bar-v { font-family: var(--mono); font-size: 11px; text-align: right; font-variant-numeric: tabular-nums; }
.calc-axis {
  display: flex; justify-content: space-between; font-family: var(--mono); font-size: 10.5px;
  color: var(--ink-soft); margin: 0.5rem 0 0 6.1rem; padding-right: 3.75rem;
}
@media (prefers-reduced-motion: no-preference) { .calc-bar-fill { transition: width 320ms cubic-bezier(.2,.7,.3,1); } }

/* notes + flags */
.calc-note { font-size: 0.85rem; color: var(--ink-soft); line-height: 1.6; margin: 0.9rem 0 0; }
.calc-flag {
  border-left: 2px solid var(--brass); padding: 0.75rem 0 0.75rem 1rem;
  font-size: 0.875rem; color: var(--ink-soft); margin-top: 1.5rem;
}
.calc-flag b { color: var(--ink); font-weight: 600; }

.calc-src { display: grid; grid-template-columns: 2.5rem minmax(0, 1fr); gap: 0.75rem; padding-block: 0.7rem; border-top: var(--rule); font-size: 0.8rem; line-height: 1.55; color: var(--ink-soft); }
.calc-src:first-of-type { border-top: 0; }
.calc-src b { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; color: var(--brass-ink); font-weight: 500; }
.calc-src a { border-bottom: 1px solid color-mix(in srgb, var(--ink) 25%, transparent); color: var(--ink); }
.calc-src a:hover { color: var(--brick); border-color: var(--brick); }

/* action */
.calc-act { padding: 1.35rem 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; align-items: baseline; justify-content: space-between; }
.calc-reset {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-soft); border-bottom: 1px solid transparent;
}
.calc-reset:hover { color: var(--brick); border-color: var(--brick); }

/* TC page */
html:lang(zh) .calc-block-t,
html:lang(zh) .calc-out-t,
html:lang(zh) .calc-pick-cat { font-family: var(--cjk-serif); letter-spacing: 0.06em; }
html:lang(zh) .calc-fold > summary,
html:lang(zh) .calc-sec-t,
html:lang(zh) .calc-headline-k,
html:lang(zh) .calc-pair-k { font-family: var(--cjk-sans); letter-spacing: 0.1em; text-transform: none; font-size: 11.5px; }
html:lang(zh) .calc-tbl th { font-family: var(--cjk-sans); letter-spacing: 0.06em; text-transform: none; font-size: 11px; }

/* OPTIONAL / CONFIDENCE ──────────────────────────────────────────────
   Essentials sit in the open; everything that only refines the answer
   lives behind a labelled fold that states its typical impact. */
.calc-opt-badge {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft); border: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
  padding: 0.2rem 0.45rem;
}
.calc-fold > summary { justify-content: flex-start; }
.calc-fold-imp {
  margin-left: auto; padding-left: 1rem; font-family: var(--sans); font-size: 0.75rem;
  letter-spacing: 0; text-transform: none; color: var(--ink-soft); text-align: right;
}
.calc-fold.is-edited > summary { color: var(--ink); }
.calc-fold.is-edited > summary::before { content: "+"; color: var(--brick); }
.calc-fold.is-edited[open] > summary::before { content: "–"; }
.calc-fold.is-edited > summary::after {
  content: ""; width: 0.4rem; height: 0.4rem; background: var(--brick);
  border-radius: 50%; margin-left: 0.5rem; flex: none; align-self: center;
}

.calc-conf {
  display: flex; gap: 0.8rem; align-items: flex-start;
  padding: 0.9rem 1.5rem; border-bottom: var(--rule);
  background: color-mix(in srgb, var(--brass) 7%, transparent);
  font-size: 0.8rem; line-height: 1.5; color: var(--ink-soft);
}
.calc-conf b { color: var(--ink); font-weight: 600; }
.calc-conf[data-level="2"] { background: color-mix(in srgb, var(--forest) 9%, transparent); }
.calc-conf-pips { display: inline-flex; gap: 3px; padding-top: 0.42rem; flex: none; }
.calc-conf-pips i {
  width: 0.5rem; height: 0.5rem; display: block;
  border: 1px solid color-mix(in srgb, var(--ink) 30%, transparent);
}
.calc-conf-pips i.on { background: var(--brass); border-color: var(--brass); }
.calc-conf[data-level="2"] .calc-conf-pips i.on { background: var(--forest); border-color: var(--forest); }
.calc-conf-next { display: block; color: var(--brick); margin-top: 0.15rem; }

@media (max-width: 40rem) {
  .calc-fold-imp { display: block; margin-left: 0; padding-left: 0; text-align: left; width: 100%; }
  .calc-fold > summary { flex-wrap: wrap; }
}
html:lang(zh) .calc-opt-badge,
html:lang(zh) .calc-fold-imp { font-family: var(--cjk-sans); letter-spacing: 0.06em; text-transform: none; }

/* NARROW SCREENS ─────────────────────────────────────────────────────
   The results rail sat inside containers that had no min-width:0, so a
   wide child (the figures table, and the AU$ prefix the 繁中 locale adds
   to every amount) pushed the whole page sideways instead of scrolling
   inside its own box. */
.calc-out, .calc-sec, .calc-scroll, .calc-pair > div { min-width: 0; }
.calc-scroll { max-width: 100%; }

/* Phones: the results and planner tables fit the card instead of hiding a
   column behind a sideways scroll; headings wrap, product names get the room. */
@media (max-width: 40rem) {
  .calc-sec { padding-inline: 1.1rem; }
  .calc-tbl { min-width: 0; }
  .calc-tbl th { white-space: normal; letter-spacing: 0.1em; vertical-align: bottom; }
}

@media (max-width: 24rem) {
  .calc-tbl { min-width: 16rem; }
  .calc-pair { grid-template-columns: 1fr; }
  .calc-pair > div + div { border-left: 0; border-top: var(--rule); }
  .calc-out-head, .calc-headline, .calc-sec, .calc-act { padding-inline: 1rem; }
  .calc-pair > div { padding-inline: 1rem; }
  .calc-bar { grid-template-columns: 4.5rem minmax(0, 1fr) 3.25rem; }
  .calc-axis { margin-left: 5.1rem; padding-right: 3.25rem; }
}

/* CONTAINER PLANNER ──────────────────────────────────────────────── */
.ctr-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,25rem);
  gap: clamp(2rem,4vw,3.5rem); align-items: start; }
@media (max-width: 62rem) { .ctr-grid { grid-template-columns: minmax(0,1fr); } }

.ctr-scroll { overflow-x: auto; max-width: 100%; }
.ctr-tbl { width: 100%; border-collapse: collapse; min-width: 20rem; }
.ctr-tbl th { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-soft); font-weight: 500;
  text-align: right; padding: 0 0.4rem 0.6rem; border-bottom: var(--rule-strong); white-space: nowrap; }
.ctr-tbl th:first-child { text-align: left; }
.ctr-tbl td { padding: 0.7rem 0.4rem; border-bottom: var(--rule); text-align: right; vertical-align: middle; }
.ctr-tbl td:first-child { text-align: left; }
.ctr-tbl tbody tr:last-child td { border-bottom: 0; }
.ctr-name { display: block; font-size: 0.9rem; }
.ctr-ref { display: block; font-family: var(--mono); font-size: 10.5px; color: var(--ink-soft); margin-top: 0.2rem; }
.ctr-cap { font-family: var(--mono); font-size: 11.5px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.ctr-tbl input { width: 5.5rem; text-align: right; font-family: var(--mono); font-size: 13px;
  background: transparent; border: 0; border-bottom: 1px solid color-mix(in srgb, var(--ink) 50%, transparent);
  padding: 0.35rem 0; font-variant-numeric: tabular-nums; }
.ctr-tbl input:focus { outline: none; border-bottom-color: var(--brick); box-shadow: 0 1px 0 0 var(--brick); }
.ctr-acts { display: flex; gap: 1rem; align-items: baseline; flex-wrap: wrap; margin-top: 1.25rem; }

.ctr-out { position: sticky; top: 5.5rem; border: var(--rule-strong); background: var(--paper); padding: 1.5rem; }
@media (max-width: 62rem) { .ctr-out { position: static; } }
.ctr-empty { color: var(--ink-soft); font-size: 0.9rem; padding: 2rem 0; text-align: center; }

.ctr-gauge { margin-bottom: 1.5rem; }
.ctr-gauge-bar { height: 0.85rem; background: color-mix(in srgb, var(--ink) 8%, transparent); overflow: hidden; }
.ctr-gauge-bar span { display: block; height: 100%; background: var(--ink-soft); }
.ctr-gauge[data-mood="full"] .ctr-gauge-bar span { background: var(--forest); }
.ctr-gauge[data-mood="part"] .ctr-gauge-bar span { background: var(--brass); }
.ctr-gauge[data-mood="over"] .ctr-gauge-bar span { background: var(--brick); }
.ctr-gauge-v { font-family: var(--serif); font-size: 2.4rem; font-weight: 500; line-height: 1;
  margin-top: 0.6rem; font-variant-numeric: tabular-nums; }
.ctr-gauge-v small { font-size: 1rem; margin-left: 0.1rem; }
.ctr-gauge[data-mood="full"] .ctr-gauge-v { color: var(--forest); }
.ctr-gauge[data-mood="over"] .ctr-gauge-v { color: var(--brick); }
.ctr-gauge-k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-soft); margin-top: 0.2rem; }

.ctr-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--line-soft, color-mix(in srgb, var(--ink) 10%, transparent));
  border: 1px solid color-mix(in srgb, var(--ink) 10%, transparent); margin: 0 0 1.25rem; }
.ctr-stats > div { background: var(--paper); padding: 0.8rem 0.9rem; }
.ctr-stats dt { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-soft); }
.ctr-stats dd { margin: 0.3rem 0 0; font-family: var(--serif); font-size: 1.25rem;
  font-weight: 500; font-variant-numeric: tabular-nums; }

.ctr-note { font-size: 0.82rem; color: var(--ink-soft); line-height: 1.6; margin: 0.8rem 0 0; }
.ctr-warn { color: var(--brick); }
.ctr-top { border-top: var(--rule); margin-top: 1.25rem; padding-top: 1.1rem; }
.ctr-add { list-style: none; margin: 0.7rem 0 1rem; padding: 0; }
.ctr-add li { display: flex; justify-content: space-between; gap: 1rem;
  padding: 0.45rem 0; border-bottom: var(--rule); font-size: 0.875rem; }
.ctr-add li:last-child { border-bottom: 0; }
.ctr-add b { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.ctr-how { border-top: var(--rule); margin-top: 1.25rem; padding-top: 1.1rem; }

html:lang(zh) .ctr-gauge-k,
html:lang(zh) .ctr-stats dt,
html:lang(zh) .ctr-tbl th { font-family: var(--cjk-sans); letter-spacing: 0.08em;
  text-transform: none; font-size: 11px; }
@media (max-width: 24rem) {
  .ctr-stats { grid-template-columns: 1fr; }
  .ctr-out { padding: 1rem; }
}
/* Phones: product names were squeezed to three lines by a nowrap "FULL CONTAINER"
   heading and a 20rem minimum width that pushed the cartons column out of view. */
@media (max-width: 40rem) {
  .ctr-tbl { min-width: 0; }
  .ctr-tbl th { white-space: normal; letter-spacing: 0.1em; vertical-align: bottom; }
  .ctr-tbl td { padding-inline: 0.3rem; }
  .ctr-tbl input { width: 4.25rem; }
}

/* CURRENCY SWITCHER ──────────────────────────────────────────────── */
.fx { border-top: var(--rule); padding-top: 1.1rem; margin-top: 1.25rem; }
.fx-row { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; align-items: center; }
.fx-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-soft); }
.fx-chips { display: inline-flex; gap: 0.3rem; flex-wrap: wrap; }
.fx-chip { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  padding: 0.35rem 0.6rem; border: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
  color: var(--ink-soft); background: transparent; }
.fx-chip:hover { color: var(--ink); border-color: var(--ink); }
.fx-chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.fx-note { font-size: 0.78rem; line-height: 1.6; color: var(--ink-soft); margin: 0.7rem 0 0; max-width: 68ch; }
.fx-own { border-top: 0; margin-top: 0.6rem; }
.fx-own > summary { list-style: none; cursor: pointer; font-family: var(--mono);
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft); padding: 0.45rem 0; }
.fx-own > summary::-webkit-details-marker { display: none; }
.fx-own > summary::before { content: "+ "; color: var(--brass); }
.fx-own[open] > summary::before { content: "– "; }
.fx-own > summary:hover { color: var(--ink); }
.fx-own-body { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; align-items: baseline; padding-bottom: 0.6rem; }
.fx-own-field { display: inline-flex; align-items: baseline; gap: 0.5rem; }
.fx-own-field span { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); }
.fx-own-field input { width: 7rem; font-family: var(--mono); font-size: 13px;
  background: transparent; border: 0; border-bottom: 1px solid color-mix(in srgb, var(--ink) 50%, transparent);
  padding: 0.3rem 0; font-variant-numeric: tabular-nums; }
.fx-own-field input:focus { outline: none; border-bottom-color: var(--brick); box-shadow: 0 1px 0 0 var(--brick); }
.fx-reset { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-soft); border-bottom: 1px solid transparent; }
.fx-reset:hover { color: var(--brick); border-color: var(--brick); }
.fx-own-body .fx-note { width: 100%; margin-top: 0.2rem; }
html:lang(zh) .fx-label,
html:lang(zh) .fx-own > summary,
html:lang(zh) .fx-reset { font-family: var(--cjk-sans); letter-spacing: 0.08em;
  text-transform: none; font-size: 11.5px; }

/* PRODUCT SELECTION ──────────────────────────────────────────────── */
.calc-pickbar { display: flex; gap: 1.25rem; margin-bottom: 0.5rem; }
.calc-pick-cat { display: flex; align-items: center; gap: 0.6rem; cursor: pointer; }
.calc-pick-cat input { width: 1rem; height: 1rem; accent-color: var(--brick); flex: none; }
.calc-pick.is-off { opacity: 0.42; }
.calc-pick.is-off .calc-pick-spec,
.calc-pick.is-off select,
.calc-pick.is-off input[type="number"] { pointer-events: none; }
.calc-pick.is-off .calc-pick-cat { opacity: 1; }
/* 整列淡化已表示未勾選；不再疊加瀏覽器對停用欄位的淡化 */
.calc-pick.is-off select:disabled,
.calc-pick.is-off input:disabled { opacity: 1; }
@media (prefers-reduced-motion: no-preference) { .calc-pick { transition: opacity 180ms ease; } }

/* ── 揭露型警示 ─────────────────────────────────────────────
   兩種情形會讓上方的金額被誤讀：另行報價的品項占掉大半用量，
   以及員工用量蓋過來客用量。兩者都不是錯誤，但不講就會誤導。 */
.calc-warn {
  margin: 0.9rem 0 0;
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--accent, #b4793a);
  background: color-mix(in srgb, var(--accent, #b4793a) 7%, transparent);
  border-radius: 0 6px 6px 0;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--ink, #2b2724);
  text-wrap: pretty;
}
.calc-warn--soft {
  border-left-color: color-mix(in srgb, var(--ink, #2b2724) 25%, transparent);
  background: color-mix(in srgb, var(--ink, #2b2724) 4%, transparent);
}
@supports not (background: color-mix(in srgb, red 5%, transparent)) {
  .calc-warn { background: rgba(180, 121, 58, 0.07); }
  .calc-warn--soft { background: rgba(43, 39, 36, 0.04); }
}