/* Calcatrice design system — trustworthy, quick, number-forward. */
:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --card: #f6f4ef;
  --ink: #17181c;
  --ink-soft: #4b4f57;
  --ink-faint: #6c7079;
  --line: #e5e1d8;
  --line-soft: #efece4;
  --brand: #0f6e63;      /* calcatrice teal */
  --brand-deep: #0a4f47;
  --brand-soft: #d7ebe7;
  --accent: #c2571f;     /* warm CTA */
  --accent-deep: #9c4416;
  --good: #1f7a4d;
  --radius: 14px;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "Instrument Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14151a; --surface: #1b1d23; --card: #20232b;
    --ink: #f2f0ec; --ink-soft: #c3c6cd; --ink-faint: #9699aa;
    --line: #2c2f38; --line-soft: #24262e;
    --brand: #4fbfb0; --brand-deep: #79d3c6; --brand-soft: #1e3a37;
    --accent: #e57b41; --accent-deep: #f0966a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.container { width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 760px; }
a { color: var(--brand-deep); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; color: var(--ink); }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 12px; }
h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); margin: 2.2rem 0 0.8rem; }
h3 { font-size: 1.1rem; margin: 1.4rem 0 0.5rem; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* header */
.nav { border-bottom: 1px solid var(--line); background: var(--surface); position: sticky; top: 0; z-index: 20; }
.nav-inner { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 600; text-decoration: none; color: var(--ink); font-size: 1.12rem; letter-spacing: -0.02em; }
.brand-mark { width: 26px; height: 26px; flex: 0 0 auto; }
.nav-links { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a { color: var(--ink-soft); text-decoration: none; font-size: 0.92rem; padding: 6px 10px; border-radius: 8px; }
.nav-links a:hover { background: var(--card); color: var(--ink); }

/* breadcrumbs */
.crumbs { font-size: 0.85rem; color: var(--ink-faint); margin: 20px 0 6px; }
.crumbs a { color: var(--ink-faint); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

/* hero */
.lede { font-size: 1.12rem; color: var(--ink-soft); margin: 0 0 8px; max-width: 60ch; }

/* calculator layout */
.calc-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin: 24px 0 8px; align-items: start; }
@media (max-width: 820px) { .calc-wrap { grid-template-columns: 1fr; } }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.panel-title { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 14px; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 0.92rem; font-weight: 500; margin-bottom: 5px; }
.field .help { font-size: 0.82rem; color: var(--ink-faint); margin-top: 4px; line-height: 1.4; }
.field input, .field select {
  width: 100%; font-family: var(--sans); font-size: 1rem; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px;
}
.field input:focus, .field select:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: var(--brand); }
.field-money { position: relative; }
.field-money input { padding-left: 26px; }
.field-money::before { content: "$"; position: absolute; left: 12px; top: 34px; color: var(--ink-faint); font-family: var(--mono); }

/* result */
.result { position: sticky; top: 76px; }
.result-headline { font-size: 0.8rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.1em; font-family: var(--mono); }
.result-total { font-family: var(--mono); font-weight: 600; font-size: clamp(2rem, 6vw, 3rem); color: var(--brand-deep); line-height: 1; margin: 6px 0 2px; }
.result-range { color: var(--ink-soft); font-size: 0.95rem; margin-bottom: 16px; }
.result-range .num { color: var(--ink); }
.breakdown { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-soft); }
.breakdown li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line-soft); font-size: 0.95rem; }
.breakdown li .amt { font-family: var(--mono); color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.result-actions { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 7px; text-decoration: none; font-weight: 600; font-size: 0.95rem; padding: 11px 16px; border-radius: 10px; border: 1.5px solid transparent; cursor: pointer; }
.btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-deep); border-color: var(--accent-deep); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink-faint); }

/* affiliate blocks */
.recs { margin: 8px 0; }
.recs-note { font-size: 0.95rem; color: var(--ink-soft); background: var(--brand-soft); border-radius: 10px; padding: 10px 14px; margin: 0 0 14px; }
.recs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.rec {
  display: block; text-decoration: none; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px;
  transition: border-color .15s ease, transform .15s ease;
}
.rec:hover { border-color: var(--brand); transform: translateY(-1px); }
.rec .cat { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--brand-deep); }
.rec .name { font-weight: 600; margin: 3px 0 2px; display: flex; align-items: center; gap: 6px; }
.rec .name::after { content: "↗"; color: var(--ink-faint); font-size: 0.85em; }
.rec .blurb { font-size: 0.85rem; color: var(--ink-faint); line-height: 1.4; }

/* disclosure */
.disclosure { font-size: 0.82rem; color: var(--ink-faint); background: var(--card); border: 1px solid var(--line-soft); border-radius: 10px; padding: 10px 14px; margin: 14px 0; }

/* prose sections */
.prose { max-width: 68ch; }
.prose ul { padding-left: 1.1rem; }
.prose li { margin: 6px 0; color: var(--ink-soft); }
details.faq { border-bottom: 1px solid var(--line-soft); padding: 14px 0; }
details.faq summary { font-weight: 600; cursor: pointer; list-style: none; padding-right: 24px; position: relative; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; position: absolute; right: 2px; top: 0; color: var(--brand); font-size: 1.3rem; line-height: 1; }
details.faq[open] summary::after { content: "−"; }
details.faq .faq-a { color: var(--ink-soft); margin-top: 8px; font-size: 0.97rem; }

/* related + hub cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 14px 0; }
.tile { display: block; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; transition: border-color .15s ease, transform .15s ease; }
.tile:hover { border-color: var(--brand); transform: translateY(-1px); }
.tile .tile-title { font-weight: 600; margin-bottom: 3px; }
.tile .tile-sub { font-size: 0.86rem; color: var(--ink-faint); }
.tile.soon { opacity: 0.62; pointer-events: none; }
.tile.soon .tile-sub::after { content: " · coming soon"; }

/* home hero */
.home-hero { padding: 48px 0 24px; text-align: center; }
.home-hero .lede { margin: 0 auto 8px; }

/* email capture */
.emailbox { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 24px 0; }
.emailbox form { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.emailbox input[type=email] { flex: 1; min-width: 200px; padding: 11px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--ink); }

/* footer */
.footer { border-top: 1px solid var(--line); margin-top: 48px; padding: 28px 0 40px; color: var(--ink-faint); font-size: 0.9rem; }
.footer a { color: var(--ink-faint); }
.footer-cols { display: flex; gap: 40px; flex-wrap: wrap; margin-bottom: 20px; }
.footer-cols h4 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); margin: 0 0 8px; }
.footer-cols ul { list-style: none; margin: 0; padding: 0; }
.footer-cols li { margin: 4px 0; }
.footer-cols a { text-decoration: none; }
.footer-cols a:hover { color: var(--ink); text-decoration: underline; }

/* consent banner */
.consent { position: fixed; left: 16px; right: 16px; bottom: 16px; max-width: 560px; margin: 0 auto; background: var(--ink); color: #f2f0ec; border-radius: 12px; padding: 14px 16px; font-size: 0.88rem; z-index: 60; box-shadow: 0 20px 50px -20px rgba(0,0,0,.5); }
.consent.hidden { display: none; }
.consent-actions { display: flex; gap: 8px; margin-top: 10px; }
.consent button { border: 1px solid #55585f; background: transparent; color: #f2f0ec; border-radius: 8px; padding: 7px 14px; font-weight: 600; cursor: pointer; }
.consent button.accept { background: var(--brand); border-color: var(--brand); color: #fff; }