/* Shared stylesheet for the ToolNetwork calculator sites.
 * Plain on purpose: one font, white cards, clear inputs, a big result.
 * Each site sets only its accent in theme.css (loaded after this file). */
@import url("./fonts.css");

:root {
  --bg: oklch(97.5% 0.004 250);
  --card: oklch(100% 0 0);
  --text: oklch(24% 0.015 250);
  --text-2: oklch(42% 0.015 250);
  --line: oklch(89% 0.008 250);
  --line-strong: oklch(78% 0.01 250);
  --field: oklch(100% 0 0);
  --accent: oklch(50% 0.16 255);
  --accent-dark: oklch(42% 0.15 255);
  --accent-soft: oklch(95% 0.03 255);
  --on-accent: oklch(99% 0.005 250);
  --font: "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px oklch(20% 0.02 250 / 0.06), 0 1px 1px oklch(20% 0.02 250 / 0.04);
  --wrap: 1120px;
  --pad: 24px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { scroll-padding-top: 24px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 1.0625rem/1.6 var(--font); -webkit-font-smoothing: antialiased; }
h1, h2, h3 { margin: 0; line-height: 1.2; font-weight: 700; color: var(--text); overflow-wrap: break-word; min-width: 0; text-wrap: balance; }
h1 { font-size: clamp(2rem, 3.2vw, 2.75rem); letter-spacing: -0.015em; }
h2 { font-size: clamp(1.5rem, 2.2vw, 1.875rem); letter-spacing: -0.01em; }
h3 { font-size: 1.125rem; }
p { margin: 0; text-wrap: pretty; }
a { color: var(--accent-dark); text-underline-offset: 0.15em; }
a:hover { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
img { max-width: 100%; height: auto; display: block; }
table, input, select, output, .num { font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
.skip { position: absolute; left: 16px; top: -64px; z-index: 50; padding: 8px 16px; background: var(--text); color: var(--card); border-radius: var(--radius-sm); }
.skip:focus-visible { top: 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: 24px; min-height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.25rem; color: var(--text); text-decoration: none; }
.logo__mark { min-width: 34px; height: 34px; padding: 0 8px; border-radius: 8px; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-size: 0.9rem; font-weight: 700; }
.logo:hover { color: var(--text); }
.site-nav ul { list-style: none; display: flex; gap: 24px; margin: 0; padding: 0; }
.site-nav a { color: var(--text-2); text-decoration: none; font-weight: 600; font-size: 0.9375rem; white-space: nowrap; }
.site-nav a:hover { color: var(--accent-dark); text-decoration: underline; }

/* intro + flagship calculator */
.intro { padding: 48px 0 56px; }
.intro__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: start; }
.intro__text { display: grid; gap: 16px; padding-top: 8px; }
.lead { font-size: 1.1875rem; color: var(--text-2); max-width: 40ch; }
.intro__text ul { margin: 4px 0 0; padding-left: 20px; color: var(--text-2); display: grid; gap: 4px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.calc { padding: 28px; display: grid; gap: 20px; }
.calc__title { font-size: 1.25rem; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 16px; }
.field { display: grid; gap: 6px; min-width: 0; }
.field label, .label { font-size: 0.9375rem; font-weight: 600; color: var(--text); }
.fields.term { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
.input { display: flex; align-items: center; width: 100%; min-width: 0; min-height: 48px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: var(--field); }
.input:hover { border-color: var(--text-2); }
.input:focus-within { outline: 3px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.input input, .input select { flex: 1; width: 100%; min-width: 0; height: 46px; padding: 0 12px; border: 0; background: transparent; color: var(--text); font: 400 1.0625rem/1 var(--font); outline: 0; }
.input input:disabled, .input select:disabled { opacity: 0.55; cursor: not-allowed; }
.input .affix { padding: 0 12px; color: var(--text-2); font-size: 0.9375rem; white-space: nowrap; }
.input .affix:first-child { padding-right: 0; }

.result { background: var(--accent-soft); border-radius: var(--radius-sm); padding: 20px; display: grid; gap: 6px; }
.result__label { font-size: 0.9375rem; font-weight: 600; color: var(--text-2); }
.result__value { font-size: clamp(2.25rem, 4vw, 3rem); font-weight: 700; line-height: 1.1; color: var(--text); }
.result__value small { font-size: 1.125rem; font-weight: 600; color: var(--text-2); margin-left: 6px; }
.result__work { font-size: 0.9375rem; color: var(--text-2); }
.result__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; margin-top: 8px; padding-top: 12px; border-top: 1px solid color-mix(in oklab, var(--accent) 25%, transparent); }
.result__grid dt { font-size: 0.875rem; color: var(--text-2); }
.result__grid dd { margin: 0; font-size: 1.25rem; font-weight: 700; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: var(--radius-sm); border: 1px solid var(--accent); background: var(--accent); color: var(--on-accent); font: 600 1rem/1 var(--font); text-decoration: none; white-space: nowrap; cursor: pointer; transition: background-color 160ms ease-out; }
.btn:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: var(--on-accent); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn--ghost { background: var(--card); color: var(--accent-dark); border-color: var(--line-strong); }
.btn--ghost:hover { background: var(--accent-soft); color: var(--accent-dark); border-color: var(--accent); }
.calc__more { justify-self: start; }

/* sections */
.section { padding: 56px 0; }
.section--alt { background: var(--card); border-block: 1px solid var(--line); }
.section__head { display: grid; gap: 8px; margin-bottom: 28px; }
.section__head p { color: var(--text-2); max-width: 60ch; }

/* calculator directory */
.cat + .cat { margin-top: 32px; }
.cat h3 { margin-bottom: 12px; color: var(--text-2); font-size: 1rem; font-weight: 700; }
.tools { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.tool { display: grid; gap: 4px; height: 100%; padding: 18px 20px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--text); transition: border-color 160ms ease-out; }
.section--alt .tool { background: var(--bg); }
.tool strong { font-size: 1.0625rem; color: var(--accent-dark); }
.tool span { font-size: 0.9375rem; color: var(--text-2); }
.tool:hover { border-color: var(--accent); color: var(--text); }
.tool:hover strong { text-decoration: underline; }

/* reference tables */
.ref { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: start; }
.ref__text { display: grid; gap: 12px; }
.ref__text p { color: var(--text-2); }
.table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.table thead th { font-size: 0.875rem; font-weight: 600; color: var(--text-2); background: var(--bg); }
.table tbody tr:last-child th, .table tbody tr:last-child td { border-bottom: 0; }
.table .num { text-align: right; font-weight: 600; }
.table tbody th { font-weight: 600; }
.figure { margin: 0; }
.figure img { border-radius: var(--radius); aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.figure figcaption { margin-top: 8px; font-size: 0.875rem; color: var(--text-2); }

/* questions */
.faq { max-width: 760px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.faq details + details { margin-top: 12px; }
.faq summary { display: flex; justify-content: space-between; gap: 16px; padding: 18px 20px; font-weight: 600; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.25rem; line-height: 1; color: var(--accent-dark); }
.faq details[open] summary::after { content: "−"; }
.faq summary:hover { color: var(--accent-dark); }
.faq details p { padding: 0 20px 18px; color: var(--text-2); max-width: 65ch; }

/* footer */
.site-footer { margin-top: 24px; padding: 40px 0 48px; background: var(--card); border-top: 1px solid var(--line); font-size: 0.9375rem; color: var(--text-2); }
.site-footer .wrap { display: grid; gap: 16px; }
.site-footer ul { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 0; padding: 0; }
.site-footer a { color: var(--text); white-space: nowrap; }
.site-footer p { max-width: 80ch; }
.fine { font-size: 0.875rem; }

/* tool and text pages */
.crumbs { padding-top: 20px; font-size: 0.875rem; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 0; margin: 0; padding: 0; color: var(--text-2); }
.crumbs li + li::before { content: "/"; margin: 0 8px; color: var(--line-strong); }
.crumbs a { color: var(--text-2); }
.intro--tool { padding-top: 20px; }
.updated { font-size: 0.875rem; color: var(--text-2); }
.prose > * { max-width: 820px; }
.prose > * + * { margin-top: 16px; }
.prose h2 { margin-top: 0; }
.prose h3 { margin-top: 28px; }
.prose p, .prose li { color: var(--text); max-width: 72ch; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li + li { margin-top: 6px; }
.prose .table { margin-top: 20px; }
.steps { counter-reset: step; list-style: none; padding-left: 0 !important; }
.steps li { counter-increment: step; position: relative; padding-left: 44px; min-height: 30px; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-dark); font-weight: 700; display: grid; place-items: center; font-size: 0.9375rem; }
.formula { padding: 16px 20px; background: var(--accent-soft); border-radius: var(--radius-sm); font-size: 1.125rem; font-weight: 600; overflow-x: auto; }
.sources a { word-break: break-word; }
.cat h3 a { color: inherit; text-decoration: none; }
.cat h3 a:hover { color: var(--accent-dark); text-decoration: underline; }
.result__value[data-error] { font-size: 1.125rem; color: var(--text-2); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.check { display: flex; align-items: center; gap: 10px; font-size: 0.9375rem; font-weight: 600; }
.check input { width: 20px; height: 20px; accent-color: var(--accent); }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); overflow: hidden; }
.seg input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.seg label { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; cursor: pointer; font-weight: 600; font-size: 0.9375rem; color: var(--text-2); }
.seg label:not(:first-of-type) { border-left: 1px solid var(--line-strong); }
.seg input:checked + label { background: var(--accent); color: var(--on-accent); }
.seg input:focus-visible + label { outline: 3px solid var(--accent); outline-offset: -3px; }
.rows-table { width: 100%; border-collapse: collapse; }
.rows-table th { font-size: 0.875rem; font-weight: 600; color: var(--text-2); text-align: left; padding: 0 8px 6px 0; }
.rows-table td { padding: 4px 8px 4px 0; }
.rows-table td:last-child { padding-right: 0; }
.link-btn { background: none; border: 0; padding: 8px 0; color: var(--accent-dark); font: 600 0.9375rem/1 var(--font); cursor: pointer; text-decoration: underline; }
.link-btn:hover { color: var(--accent); }
.rows-wrap { overflow-x: auto; }
.input select.unit { flex: 0 0 auto; width: auto; border-left: 1px solid var(--line); }
.input textarea { flex: 1; width: 100%; min-width: 0; min-height: 96px; padding: 12px; border: 0; background: transparent; color: var(--text); font: 400 1.0625rem/1.5 var(--font); outline: 0; resize: vertical; }
.result details { margin-top: 8px; }
.result summary { cursor: pointer; font-weight: 600; font-size: 0.9375rem; color: var(--accent-dark); }
.result .table { margin-top: 8px; font-size: 0.9375rem; }
.result__work strong { color: var(--text); }
.calc .fine { color: var(--text-2); }
.rows-table .link-btn { min-width: 36px; min-height: 44px; padding: 0 8px; text-decoration: none; font-size: 1rem; color: var(--text-2); }
.rows-table .link-btn:hover { color: var(--accent-dark); }

@media (max-width: 860px) {
  .intro__grid, .ref { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .tools { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .intro { padding-top: 32px; }
}
@media (max-width: 560px) {
  :root { --pad: 16px; }
  .tools { grid-template-columns: minmax(0, 1fr); }
  .site-nav { display: none; }
  .calc { padding: 20px; }
  .table th, .table td { padding: 10px 12px; }
  .rows-table { display: block; overflow-x: auto; }
  .rows-table td { min-width: 64px; }
  .rows-table .input input { padding: 0 6px; }
}
@media print {
  .site-header, .site-footer, .crumbs, .skip, main > section:not(.intro), .intro__text, .calc__more, .btn-row, .link-btn { display: none !important; }
  body { background: #fff; }
  .intro__grid { display: block; }
  .card { border: 0; box-shadow: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }