/* The Math Says — shared styles
 * Publication-feel, math-forward, anti-marketing aesthetic.
 * Distinct from affiliate-ships (which is bright/conversational/orange).
 * No framework, no build step. */

:root {
  --ink: #0a0a0a;
  --ink-soft: #2c2c2c;
  --ink-mute: #6b6b6b;
  --ink-faint: #a3a3a3;
  --bg: #ffffff;
  --bg-alt: #fafaf8;
  --rule: #d4d0c8;
  --rule-soft: #ebe7df;
  --good: #1f6a3f;
  --good-bg: #f0f7f1;
  --warn: #8a5a00;
  --warn-bg: #fdf6dd;
  --bad: #8b2a14;
  --bad-bg: #fbeee9;
  --max: 740px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Crimson Pro", Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  font-feature-settings: "kern", "liga";
}

/* Numbers always tabular and mono — this is a math site */
.num, output, [data-num], .verdict-amt, .calc-output * {
  font-family: "JetBrains Mono", "SF Mono", Consolas, "Liberation Mono", monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* UI text is sans — labels, buttons, nav */
.ui, label, button, input, select, .eyebrow, .meta, nav, footer, .badge {
  font-family: -apple-system, "Inter", BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

main, header, footer, nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Top nav — minimal */
nav.site {
  padding-top: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule-soft);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-size: 14px;
}
nav.site .brand {
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
nav.site .brand em { font-style: italic; color: var(--good); font-weight: 600; }
nav.site .nav-links a {
  color: var(--ink-mute);
  text-decoration: none;
  margin-left: 18px;
}
nav.site .nav-links a:hover { color: var(--ink); }

header {
  padding-top: 40px;
  padding-bottom: 18px;
}

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 14px;
  font-weight: 600;
}

h1 {
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 700;
  font-size: 40px;
  line-height: 1.12;
  margin: 0 0 14px;
  letter-spacing: -0.015em;
}

h2 {
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 700;
  font-size: 24px;
  line-height: 1.2;
  margin: 44px 0 14px;
  letter-spacing: -0.01em;
}

h3 {
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 700;
  font-size: 19px;
  margin: 28px 0 10px;
}

.lede {
  font-size: 22px;
  line-height: 1.45;
  color: var(--ink-soft);
  margin: 0 0 18px;
  font-style: italic;
}

p { margin: 0 0 16px; }

ul, ol { margin: 0 0 18px; padding-left: 22px; }
li { margin-bottom: 6px; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule);
}
a:hover { text-decoration-color: var(--ink); }

hr {
  border: 0;
  border-top: 1px solid var(--rule-soft);
  margin: 32px 0;
}

/* Calculator form */
.calc {
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 28px 24px;
  margin: 24px 0;
}
.calc h3 { margin-top: 0; }

.calc label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  margin-top: 16px;
}
.calc label:first-of-type { margin-top: 0; }

.calc input[type=number],
.calc select {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  font-variant-numeric: tabular-nums;
  width: 100%;
  padding: 11px 14px;
  font-size: 17px;
  border: 1px solid var(--rule);
  background: #fff;
  border-radius: 0;
}
.calc input:focus,
.calc select:focus {
  outline: none;
  border-color: var(--ink);
}

.calc .hint {
  font-family: -apple-system, "Inter", sans-serif;
  font-size: 13px;
  color: var(--ink-mute);
  margin-top: 4px;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.calc button {
  font-family: -apple-system, "Inter", sans-serif;
  margin-top: 22px;
  width: 100%;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--ink);
  color: #fff;
  border: 0;
  cursor: pointer;
  border-radius: 0;
}
.calc button:hover { background: #000; }

/* Calculator output */
.verdict {
  margin-top: 24px;
  display: none;
}
.verdict.show { display: block; }

.verdict-banner {
  padding: 22px 24px;
  border: 1px solid var(--rule);
  margin-bottom: 14px;
  background: #fff;
}
.verdict-banner.good { background: var(--good-bg); border-color: var(--good); }
.verdict-banner.warn { background: var(--warn-bg); border-color: var(--warn); }
.verdict-banner.bad { background: var(--bad-bg); border-color: var(--bad); }

.verdict-label {
  font-family: -apple-system, "Inter", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 6px;
}
.verdict-amt {
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
  margin: 0 0 6px;
  color: var(--ink);
}
.verdict-sub {
  font-family: -apple-system, "Inter", sans-serif;
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}
.verdict-banner.good .verdict-sub,
.verdict-banner.warn .verdict-sub,
.verdict-banner.bad .verdict-sub { font-weight: 500; }

.verdict-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-bottom: 14px;
}
.verdict-stats > div {
  background: #fff;
  padding: 14px 16px;
}
.verdict-stats .label {
  font-family: -apple-system, "Inter", sans-serif;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 4px;
  font-weight: 600;
}
.verdict-stats .value {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 600;
  margin: 0;
}

.verdict-text {
  font-family: "Crimson Pro", Georgia, serif;
  font-size: 17px;
  line-height: 1.5;
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-style: italic;
}

/* Callouts */
.note {
  border-left: 3px solid var(--ink);
  padding: 10px 0 10px 18px;
  margin: 22px 0;
  font-size: 17px;
  color: var(--ink-soft);
}
.note.good { border-color: var(--good); }
.note.warn { border-color: var(--warn); }
.note.bad { border-color: var(--bad); }
.note strong { color: var(--ink); }
.note p:last-child { margin-bottom: 0; }

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 26px;
  font-size: 15px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
}
th {
  font-family: -apple-system, "Inter", sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom-color: var(--ink);
}
td.num, td:nth-child(n+2):not(.name) {
  font-family: "JetBrains Mono", monospace;
  font-variant-numeric: tabular-nums;
}

/* FAQ */
.faq {
  border-top: 1px solid var(--rule);
  margin-top: 32px;
  padding-top: 8px;
}
.faq details {
  border-bottom: 1px solid var(--rule-soft);
  padding: 16px 0;
}
.faq summary {
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 700;
  font-size: 18px;
  cursor: pointer;
  outline: none;
  list-style: none;
  position: relative;
  padding-right: 28px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: -2px;
  font-size: 24px;
  font-weight: 400;
  color: var(--ink-mute);
  font-family: -apple-system, "Inter", sans-serif;
}
.faq details[open] summary::after { content: "−"; }
.faq details[open] summary { margin-bottom: 10px; }
.faq details p { font-size: 17px; color: var(--ink-soft); }

/* Calculator list (homepage) */
.calc-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
}
.calc-list li {
  border-bottom: 1px solid var(--rule-soft);
  padding: 18px 0;
}
.calc-list a {
  text-decoration: none;
  color: var(--ink);
  display: block;
}
.calc-list a:hover .name { text-decoration: underline; }
.calc-list .num-prefix {
  font-family: "JetBrains Mono", monospace;
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  display: inline-block;
  width: 32px;
}
.calc-list .name {
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
}
.calc-list .meta {
  font-size: 13px;
  color: var(--ink-mute);
  margin: 4px 0 0 32px;
}
.calc-list .badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--good-bg);
  color: var(--good);
  padding: 2px 6px;
  margin-left: 8px;
  vertical-align: middle;
}

/* CTAs (affiliate links live here, but visually understated — this is not a marketing site) */
.cta-row {
  margin: 28px 0;
  padding: 20px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.cta-row p {
  font-family: -apple-system, "Inter", sans-serif;
  font-size: 13px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
}
.cta {
  font-family: -apple-system, "Inter", sans-serif;
  display: inline-block;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 600;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
  margin-right: 8px;
  margin-bottom: 6px;
}
.cta:hover { background: var(--ink); color: #fff; text-decoration: none; }

/* Footer */
footer {
  margin-top: 60px;
  padding-top: 26px;
  padding-bottom: 50px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--ink-mute);
}
footer p { margin-bottom: 10px; }
footer .disclosure {
  font-size: 12px;
  font-style: italic;
  background: var(--bg-alt);
  padding: 12px 16px;
  border-left: 2px solid var(--rule);
  margin-bottom: 16px;
}
footer a { color: var(--ink-mute); }

/* Cookie consent banner (only renders if GA4 is on) */
.consent-banner {
  position: fixed;
  bottom: 14px;
  left: 14px;
  right: 14px;
  max-width: 680px;
  margin: 0 auto;
  background: var(--ink);
  color: #fff;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-family: -apple-system, "Inter", sans-serif;
  font-size: 13px;
  z-index: 9999;
  border: 1px solid #000;
}
.consent-banner p { margin: 0; flex: 1 1 240px; }
.consent-banner button {
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 7px 14px;
  border: 1px solid #555;
  background: transparent;
  color: #fff;
  cursor: pointer;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.consent-banner button.primary { background: var(--good); border-color: var(--good); }
.consent-banner button:hover { background: #333; }

/* Print — for screenshotting / sharing calculator results */
@media print {
  body { background: #fff; font-size: 11pt; }
  nav.site, .calc button, footer .disclosure, .consent-banner { display: none !important; }
  h1 { font-size: 22pt; }
  h2 { font-size: 14pt; page-break-after: avoid; }
  .verdict-banner, .verdict-stats { page-break-inside: avoid; }
}

/* Small screens */
@media (max-width: 520px) {
  body { font-size: 17px; }
  h1 { font-size: 32px; }
  h2 { font-size: 21px; }
  .lede { font-size: 19px; }
  main, header, footer, nav { padding: 0 18px; }
  .verdict-stats { grid-template-columns: 1fr; }
  .verdict-amt { font-size: 30px; }
}