/* AI sample size assistant. Builds on the colour tokens in site.css and the form and sheet styles in calculator.css.
   The answer band is the one bold element: the sample size beside the sentence from the paper it came from. */

.ai { padding-block: 28px 48px; }

/* intro */
.ai-intro { max-width: 760px; display: grid; gap: 8px; margin-bottom: 20px; }
.ai-intro h1 { margin: 0; font-family: var(--f-display); font-weight: 600; font-size: clamp(28px, 4.4vw, 40px); line-height: 1.1; letter-spacing: -0.01em; display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; }
.beta { font-family: var(--f-ui); font-size: 13px; font-weight: 600; letter-spacing: 0; color: var(--next-ink); background: var(--next-soft); border-radius: 999px; padding: 2px 10px; }
.ai-intro p { margin: 0; color: var(--ink-2); max-width: 68ch; font-size: 16px; }

/* banners: last result, guide question */
.banner { max-width: 860px; margin: 0 0 14px; padding: 12px 16px; border: 1px solid var(--line); border-left: 3px solid var(--gold); border-radius: 10px; background: var(--surface); display: grid; gap: 8px; font-size: 14.5px; }
.banner p { margin: 0; }
.banner .row { gap: 8px; }

/* the question */
.ask { max-width: 860px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px 20px; }
.ask form { display: grid; gap: 14px; }
.ask-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 12px; }
.ask-head h2 { margin: 0; font-family: var(--f-display); font-size: 20px; font-weight: 600; }
.ask-head label { cursor: text; }
.calc.ai #aiText { min-height: 210px; padding: 12px 14px; font-size: 15.5px; line-height: 1.55; }
.ask-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.ask-tools label.btn { cursor: pointer; }
#fileIn:focus-visible + .btn, .ask-tools label.btn:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.ask-more { border-top: 1px solid var(--line); padding-top: 12px; }
.ask-more summary { cursor: pointer; font-size: 14.5px; font-weight: 500; }
.ask-more[open] summary { margin-bottom: 10px; }
.ask-more p { margin: 8px 0 0; }
.consent, .check { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; cursor: pointer; }
.consent input, .check input { flex: none; width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--accent); }
.ask .hint { margin: 0; }
.ask-go { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.quota { font-size: 14px; color: var(--muted); }
.form-msg { margin: 0; padding: 10px 12px; border-radius: 8px; border-left: 3px solid var(--bad); background: var(--bad-soft); font-size: 14.5px; }
.form-msg.info { border-left-color: var(--warn); background: var(--warn-soft); }
.form-msg a { font-weight: 500; }

/* progress: a real sequence, so the steps are numbered */
.progress { max-width: 860px; margin-top: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; display: grid; gap: 10px; }
.prog-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.prog-head h2 { margin: 0; font-family: var(--f-display); font-size: 20px; font-weight: 600; }
.timer { font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.prog-steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.prog-steps li { counter-increment: step; display: grid; grid-template-columns: 26px minmax(0, 1fr); gap: 12px; padding: 7px 0; color: var(--muted); }
.prog-steps .mark { width: 24px; height: 24px; border-radius: 50%; border: 1.5px solid var(--line-strong); background: var(--surface); display: inline-flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; line-height: 1; }
.prog-steps .mark::before { content: counter(step); }
.prog-steps .txt { display: grid; gap: 1px; padding-top: 2px; }
.prog-steps .txt b { font-weight: 500; }
.prog-steps .sub { font-size: 13.5px; color: var(--muted); }
.prog-steps li.is-active, .prog-steps li.is-done, .prog-steps li.is-error { color: var(--ink); }
.prog-steps li.is-active .mark { border: 2px solid var(--accent); border-right-color: transparent; animation: ai-spin .9s linear infinite; }
.prog-steps li.is-active .mark::before { content: ""; }
.prog-steps li.is-done .mark { background: var(--good); border-color: var(--good); color: var(--surface); }
.prog-steps li.is-done .mark::before { content: "✓"; }
.prog-steps li.is-error .mark { background: var(--bad); border-color: var(--bad); color: var(--surface); }
.prog-steps li.is-error .mark::before { content: "!"; }
@keyframes ai-spin { to { transform: rotate(360deg); } }
.progress .hint { margin: 0; }

/* ---------- the answer ---------- */
.answer { margin-top: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); overflow: hidden; }
.ans-main { padding: 22px 24px 24px; display: grid; gap: 14px; align-content: start; min-width: 0; }
.ans-label { margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; font-size: 15px; color: var(--ink-2); }
.ans-label h2 { margin: 0; font: inherit; font-weight: 500; }
.ans-fig { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
.ans-num { font-family: var(--f-display); font-weight: 600; font-size: clamp(60px, 9vw, 92px); line-height: .92; letter-spacing: -0.02em; color: var(--brand-2); font-variant-numeric: lining-nums tabular-nums; }
.ans-unit { font-size: 18px; }
.ans-groups { margin: -6px 0 0; font-size: 15px; color: var(--ink-2); }
.kv { margin: 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 5px 18px; font-size: 14.5px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
@media (max-width: 420px) { .kv { grid-template-columns: minmax(0, 1fr); gap: 0; } .kv dd { margin-bottom: 6px; } }
.ans-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.ans-main .act-status:empty, .qa-tools .act-status:empty { display: none; }
.ans-main .act-status { margin: -4px 0 0; }
.ans-simple { margin: 0; color: var(--ink-2); font-size: 15px; max-width: 64ch; }
.ans-why { margin: 0; font-size: 14px; color: var(--ink-2); }
.ans-why b { color: var(--ink); font-weight: 600; }
.ans-msgs { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.ans-msgs li { font-size: 13.5px; padding: 8px 10px 8px 12px; border-radius: 8px; border-left: 3px solid var(--warn); background: var(--warn-soft); }
.ans-msgs li.err { border-left-color: var(--bad); background: var(--bad-soft); }

.ans-source { background: var(--surface-2); border-left: 1px solid var(--line); padding: 22px 24px 24px; display: grid; gap: 12px; align-content: start; min-width: 0; }
.src-label { margin: 0; font-size: 14px; color: var(--muted); }
.quote { margin: 0; font-family: var(--f-display); font-size: 19px; line-height: 1.5; color: var(--ink); overflow-wrap: anywhere; }
.quote::before { content: "“"; }
.quote::after { content: "”"; }
.quote mark { color: inherit; background: var(--next-soft); border-radius: 3px; padding: 0 2px; box-shadow: inset 0 -2px 0 var(--gold); }
.quote-group { margin: 0 0 2px; font-size: 13.5px; color: var(--muted); }
.src-cite { margin: 0; font-size: 14px; color: var(--ink-2); overflow-wrap: anywhere; }
.src-cite b { color: var(--ink); font-weight: 600; }
.src-ok { margin: 0; display: flex; align-items: flex-start; gap: 8px; font-size: 13.5px; color: var(--good); font-weight: 500; }
.src-ok svg { flex: none; width: 16px; height: 16px; margin-top: 2px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.src-links { margin: 0; display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 14px; }
.pool-list { margin: 0; padding-left: 18px; display: grid; gap: 4px; font-size: 14.5px; color: var(--ink-2); }
.pool-est { margin: 0; font-family: var(--f-display); font-size: 19px; line-height: 1.4; }
.ans-empty { padding: 22px 24px 24px; display: grid; gap: 12px; grid-column: 1 / -1; max-width: 760px; }
.ans-empty h2 { margin: 0; font-family: var(--f-display); font-size: 24px; font-weight: 600; line-height: 1.2; color: var(--ink); }
.ans-empty p { margin: 0; color: var(--ink-2); }
.ans-empty ul { margin: 0; padding-left: 20px; color: var(--ink-2); display: grid; gap: 4px; }
@media (max-width: 900px) {
  .answer { grid-template-columns: minmax(0, 1fr); }
  .ans-source { border-left: 0; border-top: 1px solid var(--line); }
}

/* ---------- details below the answer ---------- */
.res-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 540px); gap: 24px; align-items: start; margin-top: 24px; }
.res-layout:has(> .side[hidden]) { grid-template-columns: minmax(0, 860px); }
.side { position: sticky; top: 16px; max-height: calc(100vh - 32px); overflow: auto; min-width: 0; border-radius: 12px; }
@media (max-width: 1100px) {
  .res-layout { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; max-height: none; overflow: visible; }
}
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; min-width: 0; }
.sec { padding: 20px 22px; display: grid; gap: 12px; min-width: 0; }
.sec + .sec { border-top: 1px solid var(--line); }
.sec-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 12px; }
.sec-head h2 { margin: 0; font-family: var(--f-display); font-size: 20px; font-weight: 600; }
.sec-lead { margin: 0; color: var(--ink-2); font-size: 14.5px; max-width: 70ch; }
.sec h3 { margin: 4px 0 0; font-size: 15px; font-weight: 600; }
.sec p { margin: 0; }
@media (max-width: 480px) { .sec { padding: 18px 16px; } .ans-main, .ans-source { padding: 18px 16px 20px; } }

/* options */
.opts { display: grid; gap: 8px; }
.opt { border: 1px solid var(--line); border-radius: 10px; background: var(--surface); min-width: 0; }
.opt:has(input:checked) { border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); background: var(--accent-soft); }
.opt-pick { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; padding: 12px 14px; cursor: pointer; align-items: start; }
.opt-pick input { margin: 3px 0 0; width: 17px; height: 17px; accent-color: var(--accent); }
.opt-body { display: grid; gap: 2px; min-width: 0; }
.opt-title { font-weight: 600; font-size: 15px; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.opt-sub { font-size: 13.5px; color: var(--muted); overflow-wrap: anywhere; }
.opt-val { font-size: 14px; color: var(--ink); margin-top: 2px; }
.opt-n { text-align: right; font-family: var(--f-display); font-weight: 600; font-size: 26px; line-height: 1; font-variant-numeric: lining-nums tabular-nums; color: var(--ink); }
.opt-n small { display: block; margin-top: 4px; font-family: var(--f-ui); font-size: 12px; font-weight: 400; color: var(--muted); }
.opt.is-error .opt-n { font-family: var(--f-ui); font-size: 13px; font-weight: 500; color: var(--bad); }
.opt.is-error .opt-pick { cursor: default; }
.opt-extra { display: flex; flex-wrap: wrap; gap: 2px 16px; padding: 0 14px 10px 43px; }
.opt .quote-box { margin: 0 14px 12px 43px; padding: 10px 12px; background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; display: grid; gap: 8px; }
.opt .quote { font-size: 16px; }
@media (max-width: 520px) { .opt-extra { padding-left: 14px; } .opt .quote-box { margin-left: 14px; } .opt-n { font-size: 22px; } }
.tag { font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 999px; white-space: nowrap; }
.tag.rec { background: var(--good-soft); color: var(--good); }
.tag.kind { background: var(--accent-soft); color: var(--accent); }
.tag.often { background: var(--next-soft); color: var(--next-ink); }
.tag.plain { background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--line); }
.linkbtn { background: none; border: 0; padding: 3px 0; font-size: 13.5px; color: var(--accent); cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.linkbtn.quiet { color: var(--muted); }
.linkbtn[disabled] { text-decoration: none; cursor: default; color: var(--good); }
.opts-empty { display: grid; gap: 10px; }

/* assumptions */
.adjust { display: grid; gap: 16px; }
.adj { display: grid; gap: 6px; min-width: 0; }
.adj-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; font-size: 14px; }
.adj-top label, .adj-top .lbl { font-weight: 500; }
.adj-top output { font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.adj input[type="range"] { width: 100%; accent-color: var(--accent); margin: 2px 0; }
.adj .seg { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.adj .seg.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.adj-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px 14px; }
.calc.ai .adj select, .calc.ai .adj input[type="number"] { max-width: 100%; }

/* recruitment */
.rec-out { display: grid; gap: 8px; font-size: 14.5px; }
.rec-out p { margin: 0; }
.rec-out .ok { color: var(--good); font-weight: 500; }
.rec-out .short { padding: 10px 12px; border-radius: 8px; border-left: 3px solid var(--warn); background: var(--warn-soft); }
.rec-out ul { margin: 0; padding-left: 20px; display: grid; gap: 3px; color: var(--ink-2); }

/* review of the topic */
.design-box { display: grid; gap: 8px; }
.design-name { font-family: var(--f-display); font-size: 18px; font-weight: 600; margin: 0; }
.issues { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.issues li { padding: 10px 12px; border-radius: 8px; border-left: 3px solid var(--warn); background: var(--warn-soft); font-size: 14px; display: grid; gap: 2px; }
.issues li b { font-weight: 600; }
.improved { display: grid; gap: 8px; padding: 12px 14px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--line); }
.improved h3 { margin: 0; }
.improved ol { margin: 0; padding-left: 20px; display: grid; gap: 4px; }
.redo { display: grid; gap: 8px; padding: 12px 14px; border-radius: 10px; border: 1px dashed var(--line-strong); }

/* viva questions */
.qa { display: grid; gap: 6px; }
.qa details { border: 1px solid var(--line); border-radius: 10px; padding: 0 14px; background: var(--surface); }
.qa summary { cursor: pointer; padding: 11px 0; font-weight: 500; font-size: 14.5px; }
.qa details[open] summary { padding-bottom: 4px; }
.qa details p { margin: 0 0 12px; color: var(--ink-2); font-size: 14.5px; }
.qa-tools { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }

/* feedback */
.fb-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chipbtn { border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); border-radius: 999px; padding: 6px 13px; font-size: 14px; cursor: pointer; }
.chipbtn:hover { border-color: var(--accent); }
.chipbtn[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); font-weight: 500; }
.fb-more { display: grid; gap: 10px; }
.calc.ai #fbComment { min-height: 60px; }
.fb-done { color: var(--good); font-weight: 500; }

/* papers not used */
#exSec summary { cursor: pointer; font-weight: 500; }
.excluded { margin: 12px 0 0; padding-left: 20px; display: grid; gap: 10px; font-size: 14px; color: var(--ink-2); }
.excluded b { color: var(--ink); font-weight: 600; }

/* write-up sheet (layout from calculator.css) */
.side .sheet { border-radius: 12px; }
.side .page { max-width: 100%; }
.page .d-tablewrap { overflow-x: auto; }
.page .d-table { width: 100%; border-collapse: collapse; font-size: .86em; line-height: 1.3; }
.page .d-table th, .page .d-table td { border: 1px solid var(--paper-line); padding: 3px 6px; text-align: left; vertical-align: top; }
.page .d-table th { background: #EDEDED; font-weight: 700; }
.page .d-bullet { display: grid; grid-template-columns: 1.2em minmax(0, 1fr); }

.again { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.ai-foot { max-width: 860px; }
.ai-foot a { color: var(--accent); }

/* no published value: base the number on the patients available */
.avail-box { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.avail-box h3 { margin: 0; font-family: var(--f-display); font-size: 18px; font-weight: 600; }
.avail-box p { margin: 0; }
.prev-now { max-width: 520px; }