/* PennyPerHour — one stylesheet, no framework. */
/* Lexend (body, designed for easy reading) + IBM Plex Mono (receipt). Both SIL OFL, self-hosted. */
@font-face {
  font-family: 'Lexend';
  src: url('/assets/fonts/lexend-400.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Lexend';
  src: url('/assets/fonts/lexend-600.woff2') format('woff2');
  font-weight: 600 800; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('/assets/fonts/plex-mono-400.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('/assets/fonts/plex-mono-600.woff2') format('woff2');
  font-weight: 600 800; font-style: normal; font-display: swap;
}

:root {
  --ink: #17202e;
  --ink-2: #3b4656;
  --muted: #5d6878;
  --page: #eef1f4;
  --card: #ffffff;
  --line: #d3d9e1;
  --paper: #fcfcf8;
  --keep: #0b7253;
  --keep-tint: #dff1ea;
  --cost: #a8261d;
  --hivis: #ffe14d;
  --link: #1a47c4;
  --focus: #1a47c4;
  --radius-s: 6px;
  --radius-m: 10px;
  --sans: 'Lexend', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  --step--1: 0.875rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.5rem;
  --step-3: 2rem;
  --step-4: 2.625rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.6;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--link); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 2px; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 16px; }

/* Header */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: var(--step-1); letter-spacing: -0.01em; }
.brand svg { width: 30px; height: 30px; flex: none; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.site-nav a { display: block; padding: 8px 12px; border-radius: var(--radius-s); color: var(--ink-2); text-decoration: none; font-size: var(--step--1); font-weight: 700; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: var(--page); color: var(--ink); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: var(--radius-s); padding: 8px 12px; font: inherit; font-size: var(--step--1); font-weight: 700; color: var(--ink); }
@media (max-width: 860px) {
  .nav-toggle { display: inline-block; }
  .site-nav { display: none; position: absolute; left: 0; right: 0; top: 64px; background: var(--card); border-bottom: 1px solid var(--line); z-index: 5; }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; padding: 8px 16px 16px; }
  .site-header { position: relative; }
}

/* Page intro */
.crumbs { font-size: var(--step--1); color: var(--muted); margin: 20px 0 0; }
.crumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs li + li::before { content: '/'; margin-right: 6px; color: var(--line); }
.crumbs a { color: var(--muted); }
.intro { padding: 16px 0 24px; max-width: 46rem; }
h1 { font-size: clamp(1.875rem, 4.6vw, var(--step-4)); line-height: 1.12; letter-spacing: -0.02em; margin: 8px 0 14px; text-wrap: balance; }
.answer { font-size: var(--step-1); line-height: 1.5; color: var(--ink-2); margin: 0; }
.answer strong { color: var(--ink); }
.byline { font-size: var(--step--1); color: var(--muted); margin-top: 12px; }

/* Calculator */
.calc-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 400px; gap: 24px; align-items: start; padding-bottom: 40px; }
@media (max-width: 960px) { .calc-wrap { grid-template-columns: 1fr; } }
.calc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-m); padding: 8px 20px 20px; }
.calc fieldset { border: 0; margin: 0; padding: 16px 0 4px; border-top: 1px solid var(--line); min-width: 0; }
.calc fieldset:first-of-type { border-top: 0; }
.calc legend { float: left; width: 100%; font-weight: 700; font-size: var(--step-1); padding: 0; margin-bottom: 4px; }
.calc legend + * { clear: both; }
.keep-bar { display: none; }
@media (max-width: 960px) {
  .keep-bar {
    position: sticky; bottom: 0; z-index: 4;
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    margin: 16px -20px -20px; padding: 12px 20px;
    background: var(--ink); color: #fff; text-decoration: none;
    border-radius: 0 0 var(--radius-m) var(--radius-m);
  }
  .keep-bar strong { font-family: var(--mono); font-size: 1.35rem; color: #9ff0cf; }
  .keep-bar span:first-child { white-space: nowrap; }
  .keep-bar span:last-child { white-space: nowrap; font-size: var(--step--1); text-decoration: underline; text-underline-offset: 0.2em; }
}
.calc .legend-note { color: var(--muted); font-size: var(--step--1); margin: 0 0 12px; }
.fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px 16px; }
.field label { display: block; font-weight: 700; font-size: 0.95rem; line-height: 1.3; margin-bottom: 6px; }
.field .hint { display: block; color: var(--muted); font-size: var(--step--1); font-weight: 400; line-height: 1.4; margin-top: 4px; }
.input { display: flex; align-items: stretch; border: 1.5px solid #a9b3c1; border-radius: var(--radius-s); background: var(--card); overflow: hidden; }
.input:focus-within { border-color: var(--focus); box-shadow: 0 0 0 3px rgba(26, 71, 196, 0.18); }
.input span { display: flex; align-items: center; padding: 0 10px; background: var(--page); color: var(--ink-2); font-size: 0.95rem; white-space: nowrap; }
.input input, .input select { flex: 1; min-width: 0; border: 0; padding: 11px 12px; font: inherit; font-size: 1rem; color: var(--ink); background: transparent; font-variant-numeric: tabular-nums; }
.input input:focus, .input select:focus { outline: none; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 700; margin: 4px 0 12px; }
.check input { width: 20px; height: 20px; margin-top: 3px; accent-color: var(--keep); }
.calc-actions { display: flex; gap: 12px; flex-wrap: wrap; padding-top: 16px; border-top: 1px solid var(--line); margin-top: 12px; }
.btn { font: inherit; font-weight: 700; font-size: 0.95rem; border-radius: var(--radius-s); padding: 10px 16px; cursor: pointer; border: 1.5px solid var(--ink); background: var(--ink); color: #fff; }
.btn-quiet { background: transparent; color: var(--ink); }
[hidden] { display: none !important; }

/* Receipt — the one loud element on the page */
.receipt-col { position: sticky; top: 16px; }
@media (max-width: 960px) { .receipt-col { position: static; } }
.receipt {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.95rem;
  padding: 22px 20px 26px;
  box-shadow: 0 1px 0 var(--line), 0 10px 24px -14px rgba(23, 32, 46, 0.45);
  --tooth: 9px;
  -webkit-mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / calc(2 * var(--tooth)) 100%;
          mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / calc(2 * var(--tooth)) 100%;
  padding-bottom: calc(26px + var(--tooth));
}
.receipt h2 { font-family: var(--sans); font-size: var(--step-1); margin: 0 0 4px; }
.rc-head { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: var(--step--1); padding-bottom: 10px; border-bottom: 1.5px dashed #b9c1cc; margin-bottom: 8px; }
.rc-line { display: flex; justify-content: space-between; gap: 12px; padding: 5px 0; }
.rc-num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.rc-cost .rc-num { color: var(--cost); }
.rc-zero .rc-num { color: var(--muted); }
.rc-gross { font-weight: 700; }
.rc-sub { border-top: 1px solid #c9d0d9; margin-top: 4px; padding-top: 8px; font-weight: 700; }
.rc-total { border-top: 1.5px dashed #b9c1cc; margin-top: 6px; padding-top: 10px; font-weight: 700; }
.rc-big { display: grid; gap: 2px; background: var(--keep-tint); border-radius: var(--radius-s); padding: 14px 14px 12px; margin: 14px 0 10px; font-family: var(--sans); }
.rc-big-label { font-weight: 700; color: var(--keep); }
.rc-big-num { font-family: var(--mono); font-weight: 700; font-size: clamp(2.5rem, 9vw, 3.25rem); line-height: 1.05; color: var(--keep); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.rc-big-sub { font-size: var(--step--1); color: var(--ink-2); }
.rc-scale { padding: 34px 0 6px; }
.rc-track { position: relative; height: 12px; border-radius: 6px; background: #e3e7ec; }
.rc-fill { position: absolute; inset: 0 auto 0 0; border-radius: 6px; background: var(--keep); }
.rc-fill.is-below { background: var(--cost); }
.rc-mark { position: absolute; top: -6px; bottom: -6px; width: 2px; background: var(--ink); }
.rc-mark span { position: absolute; bottom: calc(100% + 4px); transform: translateX(-50%); white-space: nowrap; font-size: 0.75rem; font-family: var(--sans); color: var(--ink-2); background: var(--paper); padding: 0 3px; }
.rc-mark-next { background: var(--muted); top: -2px; bottom: -2px; }
.rc-mark-next span { bottom: auto; top: calc(100% + 6px); color: var(--muted); }
.rc-scale { padding-bottom: 26px; }
.rc-verdict { font-family: var(--sans); margin: 4px 0 8px; font-size: 0.98rem; line-height: 1.5; }
.rc-tax { font-family: var(--sans); font-size: var(--step--1); color: var(--ink-2); border-top: 1px solid #dde2e8; padding-top: 8px; }
.rc-tax summary { cursor: pointer; font-weight: 700; color: var(--ink); padding: 4px 0; }
.receipt-note { font-size: var(--step--1); color: var(--muted); margin: 14px 4px 0; }

/* Article */
.article { background: var(--card); border-top: 1px solid var(--line); padding: 40px 0 56px; }
.prose { max-width: 42rem; }
.prose h2 { font-size: var(--step-3); line-height: 1.2; letter-spacing: -0.015em; margin: 44px 0 12px; text-wrap: balance; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: var(--step-1); margin: 28px 0 8px; }
.prose p, .prose ul, .prose ol { margin: 0 0 16px; }
.prose li { margin-bottom: 6px; }
.prose table { width: 100%; border-collapse: collapse; margin: 8px 0 20px; font-size: 0.97rem; }
.prose .table-scroll { overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { background: var(--page); font-weight: 700; }
.prose td.n, .prose th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.callout { border-left: 4px solid var(--hivis); background: #fffbe1; padding: 12px 16px; border-radius: 0 var(--radius-s) var(--radius-s) 0; margin: 0 0 20px; }
.faq details { border-bottom: 1px solid var(--line); padding: 12px 0; }
.faq summary { font-weight: 700; cursor: pointer; font-size: 1.05rem; }
.faq details p { margin: 8px 0 0; }
.sources { font-size: 0.95rem; }
.sources li { margin-bottom: 4px; }
.meta-box { border: 1px solid var(--line); border-radius: var(--radius-m); padding: 16px 18px; margin-top: 36px; font-size: 0.95rem; color: var(--ink-2); background: var(--page); }
.meta-box p { margin: 0 0 8px; }
.meta-box p:last-child { margin: 0; }
.tool-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; padding: 0; list-style: none; margin: 8px 0 24px; }
.tool-list a { display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius-m); text-decoration: none; color: var(--ink); background: var(--card); }
.tool-list a:hover { border-color: var(--ink); }
.tool-list strong { display: block; }
.tool-list span { color: var(--muted); font-size: var(--step--1); }

/* Plain pages (about, privacy...) */
.page-plain { background: var(--card); border-top: 1px solid var(--line); padding: 32px 0 56px; }

/* Footer */
.site-footer { background: var(--ink); color: #d7dde6; padding: 36px 0 44px; font-size: 0.95rem; }
.site-footer a { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h2 { font-size: 1rem; color: #fff; margin: 0 0 8px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 6px; }
.footer-note { color: #aeb8c6; font-size: var(--step--1); margin-top: 24px; max-width: 46rem; }

/* 404 */
.not-found { padding: 48px 0 72px; }