/* POD Seller Math — one stylesheet for every page.
   Layout idea: a shop job ticket. Inputs read as ledger lines on the left; the answer is a
   butter-yellow slip with a perforated edge on the right. Everything else stays quiet. */
:root {
  --bg: #E9EDEC;          /* chalk */
  --surface: #FFFFFF;
  --ink: #20272C;         /* pepper */
  --muted: #56626A;
  --line: #C3CBCE;
  --accent: #2B5B88;      /* blue jean */
  --accent-ink: #FFFFFF;
  --field: #FFFFFF;
  --field-line: #7C8990;
  --slip: #F4E3A1;        /* butter */
  --slip-ink: #20272C;
  --slip-line: #B89F45;
  --good: #235E3F;
  --warn: #7A560A;
  --bad: #8E2532;
  --display: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: "Atkinson Hyperlegible Next", "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #182026; --surface: #212B33; --ink: #E8ECEE; --muted: #A9B4BA; --line: #3A4750;
    --accent: #8DB6DC; --accent-ink: #10202E; --field: #1A2329; --field-line: #7E8D96;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #182026; --surface: #212B33; --ink: #E8ECEE; --muted: #A9B4BA; --line: #3A4750;
  --accent: #8DB6DC; --accent-ink: #10202E; --field: #1A2329; --field-line: #7E8D96;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--body); font-size: 1rem; line-height: 1.5;
}
img { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
[hidden] { display: none !important; }
.wrap { max-width: 70rem; margin: 0 auto; padding: 0 1rem; }
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: 0.5rem 0.75rem; z-index: 20; }
.skip:focus { left: 0.5rem; top: 0.5rem; }

/* header */
.site-head { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.25rem 1.5rem; padding-top: 0.75rem; padding-bottom: 0.6rem; }
.wordmark {
  font-family: var(--display); font-stretch: 75%; font-weight: 800; font-size: 1.5rem; line-height: 1;
  color: var(--ink); text-decoration: none; letter-spacing: -0.01em;
}
.site-nav { display: flex; gap: 0.2rem 1.1rem; flex-wrap: wrap; font-size: 0.9375rem; }
.site-nav a { color: var(--ink); text-decoration: none; padding: 0.3rem 0; border-bottom: 2px solid transparent; }
.site-nav a:hover { border-bottom-color: var(--line); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--accent); }
@media (max-width: 47.99rem) {
  .site-head .wrap { padding-bottom: 0.2rem; }
  .site-nav { flex-wrap: nowrap; overflow-x: auto; width: 100%; font-size: 0.875rem; gap: 0 1.1rem; scrollbar-width: none; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { white-space: nowrap; padding: 0.6rem 0 0.5rem; }
}

/* type */
h1, h2 { font-family: var(--display); text-wrap: balance; margin: 0; }
h1 { font-stretch: 75%; font-weight: 800; font-size: clamp(2rem, 6.2vw, 3.25rem); line-height: 1.02; letter-spacing: -0.012em; }
h2 { font-stretch: 87%; font-weight: 700; font-size: 1.5rem; line-height: 1.15; }
h3 { font-size: 1.0625rem; line-height: 1.3; margin: 0; }
p { margin: 0; }
.lede { font-size: 1.125rem; max-width: 40rem; }
.small { font-size: 0.875rem; color: var(--muted); }

main { padding: 1.75rem 0 3rem; }
.intro { display: grid; gap: 0.75rem; margin-bottom: 1.5rem; }

/* calculator layout */
.calc-grid { display: grid; gap: 1.5rem; align-items: start; }
@media (min-width: 60rem) {
  .calc-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 27rem); gap: 2rem; }
  .slip-col { position: sticky; top: 0.75rem; max-height: calc(100vh - 1.5rem); overflow: auto; border-radius: 4px; }
}

.presets { display: grid; gap: 0.5rem; margin-bottom: 1rem; }
.preset-row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.preset-row span { font-size: 0.9375rem; }
button { font: inherit; color: inherit; }
.preset {
  border: 1px solid var(--field-line); background: var(--surface); color: var(--ink);
  padding: 0.4rem 0.85rem; border-radius: 999px; cursor: pointer; font-size: 0.9375rem; min-height: 2.75rem;
}
.preset[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.group { background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 0.25rem 1rem 0.5rem; margin-bottom: 1rem; }
.group > legend, .group > summary {
  font-family: var(--display); font-stretch: 87%; font-weight: 700; font-size: 1.125rem;
  padding: 0.6rem 0 0.35rem; float: left; width: 100%;
}
.group > legend + * { clear: both; }
details.group > summary { float: none; cursor: pointer; }
.row {
  display: grid; grid-template-columns: minmax(0, 1fr) 7.25rem; gap: 0.75rem; align-items: center;
  padding: 0.55rem 0; border-top: 1px solid var(--line);
}
.row label, .row .label { display: block; font-size: 0.9688rem; line-height: 1.3; }
.hint { display: block; font-size: 0.8125rem; color: var(--muted); margin-top: 0.15rem; line-height: 1.35; }
.amount { display: flex; align-items: stretch; border: 1px solid var(--field-line); border-radius: 3px; background: var(--field); }
.amount:focus-within { outline: 3px solid var(--accent); outline-offset: 1px; }
.amount span { display: grid; place-items: center; padding: 0 0.45rem; color: var(--muted); font-size: 0.9375rem; }
.amount input {
  width: 100%; min-width: 0; border: 0; background: transparent; color: var(--ink); font: inherit;
  font-variant-numeric: tabular-nums; text-align: right; padding: 0.5rem 0.5rem 0.5rem 0; min-height: 2.75rem;
  -moz-appearance: textfield; appearance: textfield;
}
.amount input:focus { outline: none; }
.amount input::-webkit-outer-spin-button, .amount input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.amount .pre + input { padding-left: 0; }
.seg { display: flex; border: 1px solid var(--field-line); border-radius: 3px; overflow: hidden; background: var(--field); }
.seg label { flex: 1; display: grid; place-items: center; text-align: center; font-size: 0.875rem; padding: 0.4rem 0.25rem; cursor: pointer; line-height: 1.15; min-height: 2.75rem; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg input:checked + label { background: var(--ink); color: var(--bg); }
.seg input:focus-visible + label { outline: 3px solid var(--accent); outline-offset: -3px; }
.row.sides { grid-template-columns: minmax(0, 1fr) 11rem; }
.primary {
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 3px; cursor: pointer;
  padding: 0.8rem 1.1rem; font-weight: 700; font-size: 1rem; min-height: 2.75rem;
}
.quiet { background: transparent; border: 1px solid currentColor; border-radius: 3px; padding: 0.5rem 0.8rem; cursor: pointer; font-size: 0.9375rem; min-height: 2.75rem; }
.form-foot { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

/* the slip: the one loud element */
.slip {
  --r: 5px;
  background: var(--slip); color: var(--slip-ink); padding: 1.6rem 1.1rem 1.25rem; border-radius: 0 0 4px 4px;
  -webkit-mask: radial-gradient(var(--r) at 50% 0, #0000 97%, #000) 50% 0 / calc(var(--r) * 3.4) 100% repeat-x;
  mask: radial-gradient(var(--r) at 50% 0, #0000 97%, #000) 50% 0 / calc(var(--r) * 3.4) 100% repeat-x;
  display: grid; gap: 1.1rem;
}
.slip:focus { outline: none; }
.slip a { color: #1F4A72; }
.slip :focus-visible { outline-color: var(--slip-ink); }
.slip h2 { font-size: 1.125rem; font-stretch: 87%; }
.slip section { display: grid; gap: 0.5rem; border-top: 1px dashed var(--slip-line); padding-top: 0.9rem; }
.slip p, .slip li { font-size: 0.9375rem; }
.verdict { display: grid; gap: 0.6rem; }
.chip {
  justify-self: start; font-family: var(--display); font-stretch: 75%; font-weight: 800; font-size: 1.5rem; line-height: 1.05;
  padding: 0.3rem 0.6rem 0.35rem; color: #fff; background: var(--slip-ink); border-radius: 2px; transform: rotate(-1.2deg);
}
[data-tone="good"] .chip { background: var(--good); }
[data-tone="warn"] .chip { background: var(--warn); }
[data-tone="bad"] .chip { background: var(--bad); }
.headline { font-size: 1.0625rem !important; font-weight: 700; line-height: 1.35; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.slip table { font-size: 0.875rem; }
.slip th, .slip td { text-align: right; padding: 0.4rem 0.3rem; border-bottom: 1px solid var(--slip-line); vertical-align: top; }
.slip th:first-child { text-align: left; font-weight: 400; padding-left: 0; }
.slip thead th { font-weight: 700; vertical-align: bottom; line-height: 1.2; }
.slip tr.current th, .slip tr.current td { font-weight: 700; }
.sub-inline { font-weight: 400; font-size: 0.75rem; border: 1px solid currentColor; border-radius: 2px; padding: 0 0.25rem; }
.ledger { display: grid; grid-template-columns: 1fr auto; gap: 0.2rem 1rem; font-size: 0.9375rem; font-variant-numeric: tabular-nums; margin: 0; }
.ledger dt { margin: 0; }
.ledger dd { margin: 0; text-align: right; }
.ledger .total { font-weight: 700; border-top: 1px solid var(--slip-line); padding-top: 0.25rem; }
.ledger .brk { margin-top: 0.6rem; }
.pos { color: var(--good); font-weight: 700; }
.neg { color: var(--bad); font-weight: 700; }
.flips { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.3rem; }
.next p + p { margin-top: 0.5rem; }
.copy-row { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }

/* small-screen bar */
.bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; background: var(--slip); color: var(--slip-ink);
  display: flex; gap: 0.75rem; align-items: center; justify-content: space-between;
  padding: 0.55rem 1rem calc(0.55rem + env(safe-area-inset-bottom, 0px)); border-top: 2px solid var(--slip-ink);
  font-size: 0.9375rem; font-weight: 700; line-height: 1.25;
}
.bar .quiet { flex: none; font-weight: 400; background: var(--slip-ink); color: var(--slip); border-color: var(--slip-ink); }
.bar-hidden { display: none; }
@media (min-width: 60rem) { .bar { display: none; } }
@media (max-width: 59.99rem) { body.has-bar { padding-bottom: 4.5rem; } }

/* content pages */
.prose { display: grid; gap: 1rem; max-width: 42rem; }
.prose h1 { margin-bottom: 0.25rem; }
.prose h2 { margin-top: 1rem; }
.prose ul, .prose ol { margin: 0; padding-left: 1.25rem; display: grid; gap: 0.4rem; }
.prose .scroll { max-width: 100%; }
.prose table { font-size: 0.9375rem; background: var(--surface); border: 1px solid var(--line); }
.prose th, .prose td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose td.n, .prose th.n { text-align: right; white-space: nowrap; }
.callout { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); padding: 0.8rem 1rem; border-radius: 2px; display: grid; gap: 0.4rem; }
.callout.disclosure { border-left-color: var(--ink); }
.paid { font-size: 0.75rem; border: 1px solid currentColor; border-radius: 2px; padding: 0 0.3rem; white-space: nowrap; }
.below { display: grid; gap: 1.25rem; margin-top: 2.5rem; max-width: 42rem; }
.below ul { margin: 0; padding-left: 1.25rem; display: grid; gap: 0.5rem; }
.formula { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.875rem; background: var(--surface); border: 1px solid var(--line); padding: 0.7rem 0.8rem; overflow-x: auto; white-space: pre; border-radius: 2px; margin: 0; }

/* press table */
.filters { display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem; }
.filters label { display: grid; gap: 0.25rem; font-size: 0.9375rem; }
select { font: inherit; color: var(--ink); background: var(--field); border: 1px solid var(--field-line); border-radius: 3px; padding: 0.5rem 0.6rem; min-height: 2.75rem; max-width: 100%; }
.wide { max-width: 70rem; }
.press-table { font-size: 0.9375rem; background: var(--surface); border: 1px solid var(--line); }
.press-table th, .press-table td { text-align: left; padding: 0.6rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.press-table .sub { display: block; font-size: 0.8125rem; color: var(--muted); }
@media (max-width: 47.99rem) {
  .press-table thead { position: absolute; left: -999px; }
  .press-table, .press-table tbody, .press-table tr, .press-table th, .press-table td { display: block; width: 100%; }
  .press-table tr { border-bottom: 3px solid var(--line); padding: 0.4rem 0; }
  .press-table th, .press-table td { border: 0; padding: 0.25rem 0.75rem; }
  .press-table th[scope="row"] { font-size: 1.0625rem; }
  .press-table td::before { content: attr(data-label) ": "; color: var(--muted); font-size: 0.8125rem; }
}

.site-foot { border-top: 1px solid var(--line); padding: 1.25rem 0 2rem; font-size: 0.875rem; color: var(--muted); }
.site-foot .wrap { display: grid; gap: 0.4rem; }
.site-foot a { color: inherit; }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }