/* AI Footprint Calculator (/tools/ai-footprint-calculator/). Loads only on
   tool pages, after base.css + site.css, and uses their tokens. */

.js-only { display: none; }
html.js .js-only { display: revert; }

.calc { display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 2rem; align-items: start; padding: .5rem 0 2.5rem; }

/* ---- inputs ---- */
.calc-inputs {
  background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius-lg);
  padding: 1.5rem; position: sticky; top: 6rem;
  box-shadow: 0 16px 34px -18px rgba(24, 27, 33, .25);
}
.calc-inputs .cf { border: 0; margin: 0 0 1.35rem; padding: 0; min-width: 0; }
.calc-inputs .cf:last-of-type { margin-bottom: 0; }
.calc-inputs label[for], .calc-inputs legend {
  display: flex; justify-content: space-between; gap: .5rem;
  font-family: var(--mono); font-size: .7rem; font-weight: 500; letter-spacing: .05em;
  text-transform: uppercase; color: var(--muted); margin-bottom: .55rem; padding: 0; line-height: 1.5;
}
.calc-inputs output { color: var(--accent-deep); font-weight: 600; }
.cf-pair { display: flex; flex-direction: column; gap: .6rem; }
.calc-inputs input[type="number"] {
  width: 100%; font-family: var(--body); font-size: 1.05rem; color: var(--ink);
  padding: .65rem .85rem; border: 1px solid var(--rule); border-radius: 10px; background: var(--card);
}
.calc-inputs input[type="number"]:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.calc-inputs input[type="range"] { width: 100%; accent-color: var(--accent); margin: 0; }

.chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span {
  display: inline-block; font-size: .84rem; color: var(--ink-2); padding: .38rem .75rem;
  border: 1px solid var(--rule); border-radius: 999px; background: var(--paper-2);
  transition: background .15s, border-color .15s, color .15s;
}
.chip:hover span { border-color: var(--hair); }
.chip input:checked + span { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-deep); font-weight: 600; }
.chip input:focus-visible + span { outline: 2px solid var(--accent-deep); outline-offset: 2px; }

/* ---- results ---- */
.calc-head {
  border-radius: var(--radius-lg); padding: 1.6rem 1.75rem; margin-bottom: 1.25rem; color: #fff;
  background:
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .08) 1px, transparent 0) 0 0 / 22px 22px,
    linear-gradient(135deg, var(--accent-deep) 0%, #0b3f39 100%);
}
.ch-k { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; opacity: .8; margin: 0; }
.ch-n { font-family: var(--display); font-size: clamp(2.8rem, 7vw, 4.4rem); line-height: 1; margin: .35rem 0 .7rem; letter-spacing: -.02em; }
.ch-s { margin: 0; font-size: 1rem; line-height: 1.6; max-width: 640px; opacity: .92; }
.ch-s b { color: var(--teal-bright); }

.calc-planes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.cp { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 1.1rem 1.15rem; }
.cp h3 { font-family: var(--mono); font-size: .72rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--accent-deep); margin: 0 0 .6rem; }
.cp ul { list-style: none; margin: 0; padding: 0; }
.cp li { display: flex; justify-content: space-between; align-items: baseline; gap: .75rem; padding: .45rem 0; border-top: 1px solid var(--rule-2); font-size: .9rem; color: var(--ink-2); }
.cp li:first-child { border-top: 0; }
.cp li b { font-family: var(--mono); font-size: 1rem; color: var(--ink); white-space: nowrap; }
.cr-l small { display: block; color: var(--faint); font-size: .76rem; }

.calc-cov { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 1.1rem 1.15rem; }
.calc-cov h3 { font-family: var(--display); font-weight: 500; font-size: 1.2rem; margin: 0 0 .2rem; }
.calc-note { color: var(--muted); font-size: .84rem; margin: 0 0 .8rem; }
.calc-cov table, .calc-coef { width: 100%; border-collapse: collapse; font-size: .9rem; }
.calc-cov th, .calc-cov td { text-align: left; padding: .55rem .4rem; border-top: 1px solid var(--rule-2); vertical-align: top; }
.calc-cov thead th, .calc-coef thead th { font-family: var(--mono); font-size: .68rem; font-weight: 500; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); border-top: 0; }
.calc-cov tbody th { font-weight: 500; color: var(--ink); }
.calc-cov tbody th small { display: block; font-weight: 400; color: var(--faint); font-size: .78rem; line-height: 1.45; margin-top: .15rem; }
.calc-cov td { white-space: nowrap; width: 1%; }
.cov { display: inline-block; font-family: var(--mono); font-size: .72rem; font-weight: 600; padding: .2rem .55rem; border-radius: 999px; }
.cov-0 { background: var(--danger-soft); color: var(--danger); }
.cov-1 { background: var(--warn-soft); color: var(--warn); }
.cov-2 { background: var(--accent-soft); color: var(--accent-deep); }

.calc-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: 1.25rem; }

/* ---- lead form, method, faq ---- */
.calc-cta { max-width: 640px; margin: 0 auto; padding: 1rem 0 2rem; }
.calc-cta .lead-form-wrap { position: static; }
.calc-method { max-width: 900px; }
.calc-table-wrap { overflow-x: auto; }
.calc-coef th, .calc-coef td { text-align: left; padding: .6rem .5rem; border-top: 1px solid var(--rule-2); vertical-align: top; color: var(--ink-2); }
.calc-coef td.num { font-family: var(--mono); white-space: nowrap; color: var(--ink); }
.calc-coef small { display: block; color: var(--faint); font-size: .8rem; line-height: 1.5; margin-top: .2rem; }
.calc-coef a { color: var(--accent-deep); }
.assume { font-family: var(--mono); font-size: .72rem; padding: .15rem .5rem; border-radius: 999px; background: var(--paper-3); color: var(--muted); }

/* FAQ: renderFaq() markup, styled in blog.css, which tool pages do not load.
   Kept in step with the .adv-faq / .faq-item rules there. */
.calc-page .adv-faq { max-width: 820px; margin: 0 auto; }
.calc-page .adv-faq > h2 { font-family: var(--display); font-weight: 500; font-size: 1.5rem; color: var(--ink); margin: 0 0 1.25rem; }
.calc-page .faq-item { border-top: 1px solid var(--rule); padding: 1.1rem 0; }
.calc-page .faq-item:last-child { border-bottom: 1px solid var(--rule); }
.calc-page .faq-item > .faq-q { font-family: var(--display); font-weight: 500; font-size: 1.08rem; color: var(--ink); margin: 0; list-style: none; cursor: pointer; display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.calc-page .faq-item > .faq-q::-webkit-details-marker { display: none; }
.calc-page .faq-item > .faq-q::marker { content: ""; }
.calc-page .faq-item > .faq-q::after { content: ""; flex: none; width: 9px; height: 9px; margin-top: .4em; border-right: 2px solid var(--faint); border-bottom: 2px solid var(--faint); transform: rotate(45deg); transition: transform .18s ease; }
.calc-page .faq-item[open] > .faq-q::after { transform: rotate(-135deg); }
.calc-page .faq-item > .faq-q:hover { color: var(--accent-deep); }
.calc-page .faq-item[open] > .faq-q { margin-bottom: .6rem; }
.calc-page .faq-a { padding-right: 22px; }
.calc-page .faq-a p { font-size: 1rem; line-height: 1.7; color: var(--ink-2); margin: 0; }

@media (max-width: 1100px) {
  .calc-planes { grid-template-columns: 1fr 1fr; }
  .calc-planes .cp:first-child { grid-row: span 2; }
}
@media (max-width: 900px) {
  .calc { grid-template-columns: 1fr; }
  .calc-inputs { position: static; }
}
@media (max-width: 640px) {
  .calc-planes { grid-template-columns: 1fr; }
  .calc-planes .cp:first-child { grid-row: auto; }
  .calc-head { padding: 1.3rem 1.2rem; }
  .calc-cov td { white-space: normal; }
}