/* FairBillCheck: itemized receipt. White paper, black ink, one clinical teal.
   IBM Plex Sans Condensed for text, IBM Plex Mono for codes and money. */

:root {
  --paper: #ffffff;
  --ink: #101418;
  --ink-2: #3a4148;
  --ink-3: #555d65;
  --rule: #d7dbdf;
  --dash: #9aa1a8;
  --teal: #0b6464;        /* text-safe on white (6.9:1) */
  --teal-bright: #0e7c7b; /* decoration and large text */
  --teal-wash: #f3f8f7;
  --tint: #f6f7f8;
  --sans: 'IBM Plex Sans Condensed', 'Arial Narrow', Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --wrap: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 18px; line-height: 1.55;
  font-feature-settings: "tnum" 1;
}
img { max-width: 100%; height: auto; }
a { color: var(--teal); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--ink); }
h1, h2, h3 { line-height: 1.12; margin: 0 0 .5em; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.25rem); }
h2 { font-size: clamp(1.4rem, 2.4vw, 1.85rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
code, .mono { font-family: var(--mono); font-size: .92em; }
[hidden] { display: none !important; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) { .wrap { padding: 0 16px; } body { font-size: 17px; } }

/* accessibility kit */
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 8px; top: -60px; z-index: 1000; background: var(--ink); color: #fff; padding: 10px 16px; font-weight: 600; text-decoration: none; transition: top .15s ease; }
.skip-link:focus { top: 8px; color: #fff; outline: 3px solid var(--teal-bright); outline-offset: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--teal-bright); outline-offset: 2px;
}

/* ---------- masthead: minimal, left-aligned ---------- */
.mast { border-bottom: 1px solid var(--ink); background: var(--paper); }
.mast-row { display: flex; align-items: center; gap: 36px; min-height: 64px; flex-wrap: wrap; }
.wordmark {
  font-family: var(--mono); font-weight: 600; font-size: 1.05rem; color: var(--ink);
  text-decoration: none; display: inline-flex; align-items: center; gap: 10px; letter-spacing: -0.02em;
}
.wm-mark {
  width: 14px; height: 18px; border: 2px solid var(--ink); border-bottom-style: dashed;
  display: inline-block; position: relative;
}
.wm-mark::after { content: ""; position: absolute; left: 2px; right: 2px; top: 4px; height: 2px; background: var(--teal-bright); box-shadow: 0 4px 0 var(--ink); }
.nav { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: .98rem; padding: 6px 0; }
.nav a:hover { color: var(--ink); text-decoration: underline; }
.nav a.nav-cta { color: var(--teal); font-weight: 600; text-decoration: underline; }
.nav-toggle {
  display: none; margin-left: auto; font: 600 .95rem var(--sans); color: var(--ink);
  background: none; border: 1px solid var(--ink); padding: 7px 14px; cursor: pointer;
}
@media (max-width: 860px) {
  .mast-row { gap: 12px; padding-top: 10px; padding-bottom: 10px; }
  .nav-toggle { display: inline-block; }
  .nav { display: none; width: 100%; flex-direction: column; align-items: flex-start; gap: 0; padding: 6px 0 10px; border-top: 1px dashed var(--dash); }
  .nav.is-open { display: flex; }
  .nav a { padding: 10px 0; width: 100%; font-size: 1.05rem; }
}

/* ---------- buttons and small type ---------- */
.btn {
  display: inline-block; background: var(--ink); color: #fff; text-decoration: none;
  font: 600 1.05rem var(--sans); padding: 14px 22px; border: 2px solid var(--ink); cursor: pointer;
}
.btn:hover { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn:disabled { opacity: .6; cursor: progress; }
.textlink { font-weight: 600; }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 46em; }
.fine { font-size: .9rem; color: var(--ink-3); }

/* ---------- hero: copy + receipt ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 56px; padding-top: 56px; padding-bottom: 56px; align-items: start; }
.hero h1 { max-width: 13em; }
.hero-actions { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; margin-top: 26px; }
.hero-list { list-style: none; padding: 0; margin: 28px 0 0; border-top: 1px dashed var(--dash); }
.hero-list li { padding: 9px 0; border-bottom: 1px dashed var(--dash); color: var(--ink-2); }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; gap: 36px; padding-top: 36px; } }

.receipt {
  margin: 0; border: 1px solid var(--ink); border-top-width: 3px; background: var(--paper);
  padding: 20px 22px 18px; font-family: var(--mono);
}
.rc { width: 100%; border-collapse: collapse; font-size: .92rem; }
.rc caption { text-align: left; font-family: var(--sans); font-weight: 600; font-size: 1rem; padding-bottom: 12px; color: var(--ink); }
.rc th, .rc td { padding: 9px 4px; border-bottom: 1px dashed var(--dash); text-align: left; vertical-align: top; font-weight: 400; }
.rc thead th { font-family: var(--sans); font-weight: 600; font-size: .9rem; color: var(--ink-2); border-bottom: 1px solid var(--ink); }
.rc .n { text-align: right; white-space: nowrap; }
.rc-code { display: block; font-weight: 600; }
.rc-cat { display: block; font-family: var(--sans); font-size: .82rem; color: var(--ink-3); }
.rc tfoot th, .rc tfoot td { font-weight: 600; border-top: 1px solid var(--ink); border-bottom: 3px double var(--ink); }
.rc tbody td:last-child, .rc tfoot td:last-child { color: var(--teal); font-weight: 600; }
.receipt figcaption { font-family: var(--sans); font-size: .86rem; color: var(--ink-3); margin-top: 14px; line-height: 1.45; }
@media (max-width: 480px) { .receipt { padding: 14px 12px; } .rc { font-size: .84rem; } }

/* ---------- ledger sections ---------- */
.ledger-sec { border-top: 1px solid var(--ink); }
.ledger-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 40px; padding-top: 40px; padding-bottom: 48px; }
.ledger-grid > .l-head p { color: var(--ink-2); }
.l-rows { border-top: 1px dashed var(--dash); }
.l-row { display: grid; grid-template-columns: minmax(0, 14em) minmax(0, 1fr); gap: 24px; padding: 16px 0; border-bottom: 1px dashed var(--dash); }
.l-row h3 { margin: 0; font-size: 1.12rem; }
.l-row p { margin: 0; color: var(--ink-2); }
.l-row p + p { margin-top: .6em; }
@media (max-width: 860px) {
  .ledger-grid { grid-template-columns: 1fr; gap: 16px; padding-top: 30px; padding-bottom: 34px; }
  .l-row { grid-template-columns: 1fr; gap: 4px; }
}

/* leader rows: label ........ value */
.leaders { margin: 0 0 1em; padding: 0; }
.leaders > div { display: flex; align-items: baseline; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--dash); }
.leaders dt { flex: 0 1 auto; color: var(--ink-2); }
.leaders dd { margin: 0 0 0 auto; font-family: var(--mono); font-weight: 600; white-space: nowrap; text-align: right; }
.leaders dd.dd-text { font-family: var(--sans); font-weight: 500; white-space: normal; max-width: 60%; }
@media (max-width: 560px) {
  .leaders > div { flex-direction: column; align-items: flex-start; gap: 2px; }
  .leaders dd, .leaders dd.dd-text { margin: 0; max-width: 100%; text-align: left; }
}

/* ---------- entity pages ---------- */
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 18px 0 0; margin: 0; font-size: .9rem; color: var(--ink-3); }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--dash); }
.entity { padding-top: 26px; padding-bottom: 20px; }
.entity > h1 { margin-top: 6px; max-width: 18em; }
.entity-sub { display: flex; gap: 12px; flex-wrap: wrap; align-items: baseline; margin-bottom: 14px; }
.tag { font-family: var(--mono); font-size: .85rem; border: 1px solid var(--ink); padding: 2px 8px; }
.l2desc { color: var(--ink-2); }
.ledger { border-top: 1px solid var(--ink); margin-top: 34px; padding-top: 22px; }
.ledger h2 { font-size: 1.35rem; }
.prose .ledger p, .prose > p { max-width: 46em; }

.table-scroll { overflow-x: auto; max-width: 100%; margin: 8px 0 14px; }
.data { width: 100%; border-collapse: collapse; font-size: .95rem; }
.data th, .data td { text-align: left; padding: 9px 10px 9px 0; border-bottom: 1px dashed var(--dash); vertical-align: top; font-weight: 400; }
.data thead th { font-weight: 600; color: var(--ink-2); border-bottom: 1px solid var(--ink); font-size: .88rem; }
.data tbody th { font-weight: 500; }
.data .n { text-align: right; font-family: var(--mono); white-space: nowrap; }
.data thead .n { font-family: var(--sans); }

.codelist { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 0; border-top: 1px dashed var(--dash); }
.codelist.wide { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.codelist li { border-bottom: 1px dashed var(--dash); }
.codelist a { display: block; padding: 9px 0; font-family: var(--mono); }
.codelist.wide a { font-family: var(--sans); }
.jump ul { list-style: none; padding: 0; margin: 10px 0 0; display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: .95rem; }

.cta-strip {
  display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap;
  border: 1px solid var(--ink); border-top-width: 3px; padding: 22px 24px; margin: 40px auto 56px;
}
.cta-strip p { margin: 0; max-width: 40em; }
@media (max-width: 640px) { .cta-strip { margin-left: 16px; margin-right: 16px; padding: 18px 16px; } }

/* ---------- home: code lookup ---------- */
.lookup { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; margin: 6px 0 12px; }
.lookup label { display: block; font-weight: 600; margin-bottom: 6px; }
.lookup input { font: 500 1.1rem var(--mono); padding: 11px 12px; border: 1px solid var(--ink); width: 11em; text-transform: uppercase; }
.lookup .btn { padding: 11px 18px; }
.lookup-msg { min-height: 1.5em; color: var(--ink-2); }

/* ---------- forms ---------- */
.form-wrap { padding-top: 28px; padding-bottom: 60px; }
.form-wrap > h1 { max-width: 16em; }
.order { max-width: 860px; }
.order fieldset { border: 0; border-top: 1px solid var(--ink); margin: 0 0 8px; padding: 22px 0 18px; min-width: 0; }
.order legend { font-weight: 700; font-size: 1.3rem; padding: 0 12px 6px 0; }
.order fieldset fieldset { border: 0; padding: 0; margin: 0 0 16px; }
.order .sub-legend { font-size: 1.02rem; font-weight: 600; padding: 0 0 4px; }
.field { margin: 0 0 16px; }
.field > label, .f > span, .choice-q { display: block; font-weight: 600; margin-bottom: 5px; }
.hint { font-size: .92rem; color: var(--ink-3); margin: 4px 0 0; }
.order input[type=text], .order input[type=email], .order input[type=month], .order input[type=date],
.order input[type=number], .order input[inputmode] {
  font: 400 1.02rem var(--sans); padding: 10px 11px; border: 1px solid var(--ink-2); background: #fff; color: var(--ink);
  width: 100%; max-width: 26em; border-radius: 0;
}
.order input.mono-in { font-family: var(--mono); text-transform: uppercase; }
.order input:focus { border-color: var(--ink); }
.choices { display: grid; gap: 8px; margin: 6px 0 4px; }
.choice { display: flex; gap: 10px; align-items: flex-start; border: 1px dashed var(--dash); padding: 10px 12px; cursor: pointer; }
.choice input { margin-top: 5px; width: 18px; height: 18px; flex: none; accent-color: var(--teal); }
.choice strong { display: block; }
.choice span span { display: block; font-size: .92rem; color: var(--ink-3); }
.choice:has(input:checked) { border-style: solid; border-color: var(--ink); background: var(--teal-wash); }

.lines { border-top: 1px dashed var(--dash); margin: 10px 0 12px; }
.line-row {
  display: grid; grid-template-columns: 2.2em 7.5em 5.5em 5em 9em minmax(0, 1fr) auto; gap: 10px; align-items: end;
  padding: 12px 0; border-bottom: 1px dashed var(--dash);
}
.line-row .ln-num { font-family: var(--mono); color: var(--ink-3); padding-bottom: 10px; }
.line-row .f { display: block; min-width: 0; }
.line-row .f > span { font-size: .85rem; font-weight: 600; color: var(--ink-2); margin-bottom: 3px; }
.line-row input { max-width: none !important; }
.line-remove { background: none; border: 1px solid var(--dash); color: var(--ink-2); font: 500 .9rem var(--sans); padding: 10px 10px; cursor: pointer; }
.line-remove:hover { border-color: var(--ink); color: var(--ink); }
.add-line { background: none; border: 1px solid var(--ink); font: 600 .98rem var(--sans); padding: 9px 14px; cursor: pointer; color: var(--ink); }
.add-line:hover { background: var(--teal-wash); }
@media (max-width: 760px) {
  .line-row { grid-template-columns: 1fr 1fr; }
  .line-row .ln-num { grid-column: 1 / -1; padding: 0; }
  .line-row .f-note { grid-column: 1 / -1; }
  .line-row .line-remove { grid-column: 1 / -1; justify-self: start; }
}
.submit-row { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; border-top: 1px solid var(--ink); padding-top: 22px; }
.order-status { padding: 12px 14px; border: 1px solid var(--ink); margin-top: 16px; }
.order-status.err { border-color: #8a1c1c; color: #8a1c1c; background: #fdf3f3; }
.order-status.err::before { content: "Problem: "; font-weight: 700; }

/* ---------- success ---------- */
.status-box { border: 1px solid var(--ink); border-top-width: 3px; padding: 22px 24px; margin: 20px 0 30px; max-width: 42em; }
.status-box h1 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }

/* ---------- prose pages (guide, legal) ---------- */
.prose { padding-top: 28px; padding-bottom: 40px; }
.prose h1 { max-width: 18em; }
.prose h2 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; max-width: 46em; }
.prose li { margin-bottom: .45em; }
.asat { font-family: var(--mono); font-size: .9rem; border-left: 3px solid var(--teal-bright); padding: 6px 0 6px 12px; color: var(--ink-2); }

/* ---------- footer: one ruled strip ---------- */
.foot { border-top: 3px double var(--ink); margin-top: 20px; }
.foot-row { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 20px 48px; padding-top: 26px; padding-bottom: 34px; }
.foot-note { font-size: .92rem; color: var(--ink-2); margin: 0; }
.foot-links { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 20px; font-size: .95rem; }
.foot-links a { color: var(--ink); }
.foot-contact { grid-column: 1 / -1; font-family: var(--mono); font-size: .9rem; border-top: 1px dashed var(--dash); padding-top: 14px; margin: 0; }
@media (max-width: 760px) { .foot-row { grid-template-columns: 1fr; } }