/* Ladabo — one stylesheet, no framework, no web fonts. */

:root {
  --ink: #14181d;
  --ink-soft: #4d5661;
  --ink-faint: #78828e;
  --bg: #fbfaf8;
  --surface: #ffffff;
  --line: #e4e1db;
  --line-soft: #efede8;
  --accent: #0f6b5c;
  --accent-soft: #e6f1ee;
  --accent-ink: #0b4f44;
  --warn: #8a5a00;
  --radius: 10px;
  --wrap: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eceef1;
    --ink-soft: #a7b0ba;
    --ink-faint: #7d8791;
    --bg: #12161a;
    --surface: #1a1f25;
    --line: #2b3239;
    --line-soft: #232931;
    --accent: #56c9b1;
    --accent-soft: #16302c;
    --accent-ink: #8fe0ce;
    --warn: #e0b060;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

a { color: var(--accent-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent); }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 .5em; }
h1 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.6rem); }
h2 { font-size: clamp(1.3rem, 1.1rem + 1vw, 1.65rem); }
h3 { font-size: 1.1rem; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-inline: 20px; }
.narrow { max-width: 660px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: -9999px; top: 0; background: var(--accent);
  color: #fff; padding: 10px 16px; z-index: 20;
}
.skip:focus { left: 8px; top: 8px; }

/* ---------- header ---------- */

.site-head {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top: 0; z-index: 10;
}
.head-inner {
  display: flex; align-items: center; gap: 16px;
  min-height: 62px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark {
  width: 20px; height: 20px; border-radius: 5px;
  background: var(--accent);
  box-shadow: inset 0 0 0 3px var(--surface), 0 0 0 1px var(--accent);
}
.brand-name { font-weight: 660; letter-spacing: -0.02em; font-size: 1.12rem; }

.nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: .93rem; }
.nav a { color: var(--ink-soft); text-decoration: none; padding: 6px 0; }
.nav a:hover { color: var(--accent); }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line);
  border-radius: 7px; width: 38px; height: 34px; cursor: pointer; position: relative;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  position: absolute; left: 9px; width: 18px; height: 2px; background: var(--ink);
  border-radius: 2px; content: "";
}
.nav-toggle-bar { top: 16px; }
.nav-toggle-bar::before { top: -6px; left: 0; }
.nav-toggle-bar::after { top: 6px; left: 0; }

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav { display: none; width: 100%; flex-direction: column; gap: 0; padding-bottom: 10px; }
  .nav.open { display: flex; }
  .nav a { padding: 10px 0; border-top: 1px solid var(--line-soft); }
}

/* ---------- hero ---------- */

.hero { padding: 56px 0 44px; border-bottom: 1px solid var(--line-soft); }
.hero-grid {
  display: grid; gap: 34px; align-items: start;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
}
@media (max-width: 820px) { .hero-grid { grid-template-columns: 1fr; gap: 26px; } }

.hero-panel {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px;
}
.hero-panel h2 {
  font-size: .78rem; text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink-faint); margin-bottom: 10px;
}
.hero-panel ul { list-style: none; padding: 0; margin: 0; }
.hero-panel li { border-top: 1px solid var(--line-soft); }
.hero-panel li:first-child { border-top: 0; }
.hero-panel a { display: block; padding: 9px 0; text-decoration: none; font-weight: 540; font-size: .95rem; }
.hero-panel-note { margin: 14px 0 0; font-size: .8rem; color: var(--ink-faint); }
.eyebrow {
  margin: 0 0 10px; font-size: .78rem; letter-spacing: .09em; text-transform: uppercase;
  color: var(--accent); font-weight: 640;
}
.hero h1 { max-width: 16ch; }
.lede { font-size: 1.08rem; color: var(--ink-soft); max-width: 58ch; margin: 0 0 20px; }

.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 30px; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 11px 20px; border-radius: 8px; font-weight: 560; font-size: .95rem;
}
.btn:hover { background: var(--accent-ink); color: #fff; }
.btn-quiet { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }
.btn-quiet:hover { background: var(--accent-soft); color: var(--ink); }

.hero-facts {
  list-style: none; padding: 0; margin: 0; display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  font-size: .93rem; color: var(--ink-soft);
}
.hero-facts strong { color: var(--ink); font-weight: 600; display: block; }

/* ---------- sections ---------- */

.section { padding: 40px 0; }
.section-title { font-size: 1.15rem; letter-spacing: -0.01em; margin-bottom: 18px; }
.group-head { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-faint); margin: 26px 0 8px; }

.cat-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.cat-card {
  display: block; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px; text-decoration: none; color: var(--ink);
}
.cat-card:hover { border-color: var(--accent); color: var(--ink); }
.cat-count { display: block; font-size: 1.5rem; font-weight: 660; color: var(--accent); letter-spacing: -0.02em; }
.cat-name { display: block; font-weight: 600; margin-top: 2px; }
.cat-blurb { display: block; font-size: .88rem; color: var(--ink-soft); margin-top: 4px; }

.calc-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line-soft); }
.calc-list li { border-bottom: 1px solid var(--line-soft); }
.calc-list li a { display: block; padding: 12px 0 4px; font-weight: 560; text-decoration: none; }
.calc-list li span { display: block; padding-bottom: 12px; font-size: .89rem; color: var(--ink-soft); }
.calc-list.big li a { font-size: 1.05rem; }

/* ---------- breadcrumbs + calculator ---------- */

.crumbs { font-size: .84rem; color: var(--ink-faint); padding: 18px 0 0; }
.crumbs a { color: var(--ink-faint); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.crumbs span { margin: 0 4px; }

.calc-head { padding: 18px 0 26px; }
.calc-head h1 { margin-bottom: 8px; }

.calc {
  display: grid; gap: 18px; align-items: start;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
}
@media (max-width: 780px) { .calc { grid-template-columns: 1fr; } }

.calc-form {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px;
}
.field { margin-bottom: 16px; }
.field:last-of-type { margin-bottom: 8px; }
.field label { display: block; font-size: .88rem; font-weight: 560; margin-bottom: 5px; }
.field-currency { padding-bottom: 16px; border-bottom: 1px solid var(--line-soft); }

.input-shell { display: flex; align-items: stretch; }
.affix {
  display: flex; align-items: center; padding: 0 11px;
  background: var(--bg); border: 1px solid var(--line); color: var(--ink-faint);
  font-size: .9rem; white-space: nowrap;
}
.affix-pre { border-right: 0; border-radius: 8px 0 0 8px; }
.affix-post { border-left: 0; border-radius: 0 8px 8px 0; }

input[type="number"], input[type="search"], select {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; min-width: 0;
}
.input-shell .affix-pre + input { border-radius: 0 8px 8px 0; }
.input-shell input:has(+ .affix-post) { border-radius: 8px 0 0 8px; }
.input-shell .affix-pre + input:has(+ .affix-post) { border-radius: 0; }

input:focus, select:focus {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent);
}
.hint { margin: 5px 0 0; font-size: .82rem; color: var(--ink-faint); }
.form-note { margin: 14px 0 0; font-size: .8rem; color: var(--ink-faint); }

.calc-results { display: grid; gap: 10px; position: sticky; top: 82px; }
@media (max-width: 780px) { .calc-results { position: static; } }

.result {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 18px;
}
.result-label { display: block; font-size: .85rem; color: var(--ink-soft); }
.result-value {
  display: block; font-size: 1.4rem; font-weight: 660; letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums; margin-top: 2px;
}
.result-hint { display: block; font-size: .8rem; color: var(--ink-faint); margin-top: 3px; }
.result-primary { background: var(--accent-soft); border-color: var(--accent); }
.result-primary .result-value { font-size: 2rem; color: var(--accent-ink); }
.result-primary .result-label { color: var(--accent-ink); }

.calc-error {
  margin: 0; padding: 12px 16px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--warn);
  color: var(--warn); font-size: .88rem;
}

/* ---------- prose ---------- */

.prose { color: var(--ink-soft); }
.prose h2 { color: var(--ink); margin-top: 1.9em; }
.prose h3 { color: var(--ink); margin-top: 1.5em; }
.prose p, .prose li { font-size: 1rem; }
.prose ul, .prose ol { padding-left: 1.15em; }
.prose li { margin-bottom: .4em; }
.prose code {
  font-family: var(--mono); font-size: .88em; background: var(--surface);
  border: 1px solid var(--line); border-radius: 5px; padding: 1px 5px;
}
.prose pre {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; overflow-x: auto;
}
.prose pre code { border: 0; padding: 0; background: none; }
.prose table { width: 100%; border-collapse: collapse; font-size: .93rem; }
.prose th, .prose td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line-soft); }
.prose th { color: var(--ink); font-weight: 600; }
.prose blockquote {
  margin: 1.4em 0; padding: 2px 0 2px 16px; border-left: 3px solid var(--accent);
  color: var(--ink-soft);
}
.calc-body { padding-top: 8px; }
.page-body { padding: 10px 0 50px; }
.page-body h1 { color: var(--ink); }

.faq details {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); padding: 0 16px; margin-bottom: 8px;
}
.faq summary { cursor: pointer; padding: 13px 0; font-weight: 560; color: var(--ink); }
.faq details[open] summary { border-bottom: 1px solid var(--line-soft); margin-bottom: 8px; }
.faq p { margin-top: 0; }

.filter { margin-bottom: 8px; max-width: 420px; }
.filter-empty { color: var(--ink-faint); font-size: .9rem; }

/* ---------- footer ---------- */

.site-foot {
  margin-top: 50px; border-top: 1px solid var(--line);
  background: var(--surface); padding: 40px 0 30px; font-size: .9rem;
}
.foot-grid { display: grid; gap: 28px; grid-template-columns: 1.6fr 1fr 1fr; }
@media (max-width: 700px) { .foot-grid { grid-template-columns: 1fr; } }
.foot-about p { color: var(--ink-soft); margin: 8px 0 0; max-width: 42ch; }
.foot-note { font-size: .82rem; color: var(--ink-faint); }
.site-foot h2 { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-faint); }
.site-foot ul { list-style: none; padding: 0; margin: 0; }
.site-foot li { margin-bottom: 7px; }
.site-foot a { color: var(--ink-soft); text-decoration: none; }
.site-foot a:hover { color: var(--accent); }
.copyright { margin: 32px 0 0; color: var(--ink-faint); font-size: .82rem; }

@media print {
  .site-head, .site-foot, .crumbs, .hero-actions { display: none; }
}