/* It's Not Just Age — Clay & Plum, web (see design/README.md and marketing/04_site_research.md §4) */
@font-face { font-family: "Source Sans 3"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/SourceSans3-normal-400.woff") format("woff"); }
@font-face { font-family: "Source Sans 3"; font-style: italic; font-weight: 400; font-display: swap; src: url("/fonts/SourceSans3-italic-400.woff") format("woff"); }
@font-face { font-family: "Source Sans 3"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/SourceSans3-normal-600.woff") format("woff"); }
@font-face { font-family: "Fraunces"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/Fraunces-normal-400.woff") format("woff"); }
@font-face { font-family: "Fraunces"; font-style: italic; font-weight: 400; font-display: swap; src: url("/fonts/Fraunces-italic-400.woff") format("woff"); }
@font-face { font-family: "Fraunces"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/Fraunces-normal-600.woff") format("woff"); }

:root {
  --plum: #3B2238;
  --plum-soft: #5A4257;
  --clay: #A84E33;       /* large headings and decoration only */
  --clay-text: #934329;  /* links and small text: passes WCAG AA on cream, shell and white */
  --blush: #E9C9BD;
  --shell: #F3E3DA;
  --cream: #F7F1EA;
  --line: #E2D6CC;
  --white: #FFFFFF;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Source Sans 3", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --measure: 38rem;
  --page: 70rem;
  --gutter: 1.25rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; background: var(--cream); color: var(--plum);
  font-family: var(--sans); font-size: 1.1875rem; line-height: 1.6;
  min-height: 100vh; display: flex; flex-direction: column;
}
main { flex: 1 0 auto; }
@media (min-width: 48rem) { body { font-size: 1.25rem; } }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--clay-text); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--plum); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.15; color: var(--plum); text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 1.5rem + 2.6vw, 3.2rem); margin: 0.4em 0 0.35em; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 1.3rem + 0.9vw, 1.9rem); margin: 2em 0 0.5em; }
h3 { font-size: 1.25em; margin: 1.6em 0 0.4em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.4em; }
li { margin-bottom: 0.4em; }
strong { font-weight: 600; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5em 0; }

.wrap { max-width: var(--page); margin: 0 auto; padding: 0 var(--gutter); }
.wrap-text { max-width: calc(var(--measure) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.small, .byline, .crumbs, .form-note { font-size: 0.85em; }

.skip { position: absolute; left: -999px; top: 0; background: var(--plum); color: var(--cream); padding: 0.6em 1em; z-index: 10; }
.skip:focus { left: 0.5rem; top: 0.5rem; }

/* header and footer */
.site-header { background: var(--cream); border-bottom: 1px solid var(--line); }
.header-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1.5rem; padding-top: 0.75rem; padding-bottom: 0.75rem; }
.logo { display: inline-flex; min-height: 44px; align-items: center; }
.logo img { height: 40px; width: auto; }
.nav { display: flex; flex-wrap: wrap; gap: 0 1.25rem; font-size: 1rem; font-weight: 600; }
@media (max-width: 26rem) { .nav { gap: 0 0.9rem; } }
.nav a { color: var(--plum); text-decoration: none; display: inline-flex; align-items: center; min-height: 44px; }
.nav a:hover, .nav a[aria-current] { color: var(--clay-text); text-decoration: underline; }

.site-footer { margin-top: 5rem; background: var(--plum); color: var(--cream); padding: 2.5rem 0 2rem; font-size: 1rem; }
.site-footer a { color: var(--cream); }
.foot-brand { display: flex; align-items: flex-start; gap: 0.75rem; font-family: var(--serif); font-size: 1.15rem; }
.foot-brand img { flex: none; }
@media (max-width: 30rem) { .foot-brand { flex-direction: column; gap: 0.5rem; } }
.foot-nav { display: flex; flex-wrap: wrap; gap: 0 1.5rem; margin: 1rem 0; }
.foot-nav a { display: inline-flex; align-items: center; min-height: 44px; }
.foot-note { color: var(--blush); max-width: var(--measure); }

.placeholder-banner { background: var(--blush); color: var(--plum); text-align: center; font-size: 1rem; font-weight: 600; padding: 0.5rem var(--gutter); margin: 0; }

/* buttons */
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0.6em 1.4em; border-radius: 999px;
  background: var(--plum); color: var(--cream); font-weight: 600; text-decoration: none; border: 2px solid var(--plum); }
.button:hover { background: var(--plum-soft); border-color: var(--plum-soft); }
.button-quiet { background: transparent; color: var(--plum); }
.button-quiet:hover { background: var(--shell); color: var(--plum); }
.text-link { font-weight: 600; }

/* article */
.crumbs { margin: 2rem 0 0; color: var(--plum-soft); }
.page > h1:first-child { margin-top: 2.5rem; }
.page-mark { margin: 2.5rem 0 0; width: 64px; height: 64px; }
.crumbs a { color: var(--plum-soft); display: inline-block; padding: 0.15em 0; min-height: 24px; }
.lede { font-family: var(--serif); font-style: italic; font-size: 1.2em; line-height: 1.45; color: var(--plum-soft); }
.byline { color: var(--plum-soft); border-top: 1px solid var(--line); padding: 0.75em 0 0.25em; margin: 1.5em 0 0; }
.checked { font-size: 0.9em; font-weight: 600; color: var(--plum); border-bottom: 1px solid var(--line); padding: 0 0 0.75em; margin: 0 0 1.5em; }
.checked .tick { color: var(--clay-text); margin-right: 0.2em; }
.byline a { color: var(--clay-text); }
.takeaways { background: var(--shell); border-radius: 12px; padding: 1.25em 1.5em 0.5em; margin: 1.5em 0; }
.takeaways h2 { margin-top: 0; font-size: 1.3em; }
.toc { border-left: 3px solid var(--blush); padding-left: 1.25em; margin: 1.5em 0; }
.toc h2 { font-family: var(--sans); font-size: 0.85em; letter-spacing: 0.12em; text-transform: uppercase; margin: 0 0 0.4em; color: var(--plum-soft); }
.toc ol { margin: 0; }
.prose h2 { scroll-margin-top: 1rem; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.25em 0; font-size: 0.9em; display: block; overflow-x: auto; }
.prose th { background: var(--shell); text-align: left; }
.prose th, .prose td { border: 1px solid var(--line); padding: 0.5em 0.7em; vertical-align: top; }
.prose blockquote { margin: 1.5em 0; padding: 0.5em 1.25em; border-left: 3px solid var(--clay); color: var(--plum-soft); }
.cite { font-size: 0.85em; white-space: nowrap; }
.cite a { display: inline-block; min-width: 24px; min-height: 24px; padding: 0.15em 0; text-align: center; text-decoration: none; font-weight: 600; }
.cite a:hover { text-decoration: underline; }
.admonition { border-radius: 12px; padding: 1em 1.5em 0.25em; margin: 1.5em 0; background: var(--white); border: 1px solid var(--line); }
.admonition-title { font-family: var(--serif); font-weight: 600; font-size: 1.1em; margin-bottom: 0.4em; }
.admonition.clinician { border-left: 6px solid var(--clay); }

.cta { background: var(--plum); color: var(--cream); border-radius: 16px; padding: 1.5em; margin: 2.5em 0; }
.cta h2, .cta h3 { color: var(--cream); margin: 0 0 0.3em; font-size: 1.35em; }
.cta p { color: var(--cream); }
.cta .button { background: var(--cream); color: var(--plum); border-color: var(--cream); }
.cta .button:hover { background: var(--blush); border-color: var(--blush); }
.cta-soft { background: var(--shell); color: var(--plum); border-left: 6px solid var(--clay); border-radius: 12px; }
.cta-soft h2, .cta-soft h3 { color: var(--plum); font-size: 1.15em; }
.cta-soft p { color: var(--plum); }
.cta-soft .button { background: var(--plum); color: var(--cream); border-color: var(--plum); }
.cta-soft .button:hover { background: var(--plum-soft); border-color: var(--plum-soft); }

.sources { margin-top: 3rem; }
.source-list { font-size: 0.9em; padding-left: 0; list-style: none; }
.source-list li { margin-bottom: 0.9em; padding-left: 3.4em; text-indent: -3.4em; }
.source-list .code { display: inline-block; width: 3.4em; text-indent: 0; font-weight: 600; color: var(--clay-text); }
.source-list li:target { background: var(--shell); border-radius: 6px; }
.level { display: inline-block; text-indent: 0; font-size: 0.9375rem; font-weight: 600; line-height: 1.4; padding: 0.05em 0.6em; border-radius: 999px; background: var(--shell); color: var(--plum); white-space: nowrap; }
.level-a { background: var(--white); border: 1px solid var(--clay-text); color: var(--clay-text); }
.legend { margin-bottom: 1em; }
.legend .level { min-width: 1.8em; text-align: center; padding: 0.05em 0.4em; }
.back { display: inline-block; min-width: 24px; min-height: 24px; text-align: center; text-decoration: none; text-indent: 0; }
.changes { font-size: 0.9em; color: var(--plum-soft); }
.disclaimer-box { background: transparent; border: 1px solid var(--line); border-left: 4px solid var(--plum-soft); border-radius: 8px; padding: 1em 1.5em 0.1em; margin: 2.5em 0; font-size: 0.9em; }

/* lists of articles */
.cards { list-style: none; padding: 0; display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr)); }
.cards li { position: relative; margin: 0; background: var(--white); border: 1px solid var(--line); border-radius: 14px; padding: 1.25rem 1.4rem; }
.cards li:hover, .cards li:focus-within { border-color: var(--clay-text); }
.cards .card-title a::after { content: ""; position: absolute; inset: 0; border-radius: 14px; }
.cards-few { max-width: var(--measure); grid-template-columns: 1fr; }
.cards .card-title { margin: 0 0 0.4em; font-size: 1.2em; }
.cards .card-title a { color: var(--plum); text-decoration: none; }
.cards .card-title a:hover { text-decoration: underline; }
.cards p { font-size: 0.95em; margin: 0 0 0.5em; }
.cards .meta { font-size: 0.8em; color: var(--plum-soft); margin: 0; }
.empty { color: var(--plum-soft); font-style: italic; }

/* home */
.hero { position: relative; overflow: hidden; background: var(--plum); color: var(--cream); padding: 3.5rem 0 4rem; }
.hero h1 { color: var(--cream); max-width: 15em; }
.hero .lede { color: var(--blush); max-width: 30em; font-family: var(--sans); font-style: normal; font-size: 1.1em; }
.trust { font-size: 1rem; font-weight: 600; letter-spacing: 0.01em; color: var(--plum-soft); margin: 0.75rem 0 0; }
.hero .trust { color: var(--blush); margin-top: 1.25rem; }
.hero-inner { position: relative; }
.hero-motif { position: absolute; right: 2rem; bottom: -9rem; width: 22rem; }
.hero .button { background: var(--cream); color: var(--plum); border-color: var(--cream); }
.hero .button:hover { background: var(--blush); border-color: var(--blush); }
.hero .text-link { color: var(--cream); margin-left: 1rem; display: inline-flex; min-height: 48px; align-items: center; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.home-intro { margin-top: 1rem; }
.home-intro > * { max-width: var(--measure); }
.band { background: var(--shell); border-radius: 16px; padding: 2rem 2rem 1.5rem; margin: 3rem 0; }
.band h2 { margin-top: 0; }
@media (max-width: 30rem) { .band { padding: 1.5rem 1.25rem 1rem; } }
.method { list-style: none; padding: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); }
.product-card { display: grid; gap: 1.5rem; align-items: center; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
.product-card img { border-radius: 12px; }
.product-card h2 { margin-top: 0; }

/* checklist landing */
.landing-hero { background: var(--shell); padding: 2.5rem 0 3rem; margin-bottom: 2rem; }
.landing-grid { display: grid; gap: 2rem; align-items: center; grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.eyebrow { font-size: 0.9375rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--clay-text); margin: 0; }
.landing-preview { margin: 0; position: relative; }
.preview-cover { width: 46%; max-width: 15rem; border-radius: 4px; box-shadow: 0 12px 32px rgba(59, 34, 56, 0.25); transform: rotate(-4deg); margin: 0 0 -4rem 0.5rem; position: relative; }
.sample { position: relative; background: var(--white); border-radius: 6px; box-shadow: 0 12px 40px rgba(59, 34, 56, 0.18); padding: 1.25rem 1.4rem 0.75rem; margin-left: 18%; }
.sample-label { font-size: 0.9375rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--clay-text); margin: 0 0 0.3rem; }
.sample-title { font-family: var(--serif); font-weight: 600; font-size: 1.25em; margin: 0 0 0.5rem; }
.sample ul { list-style: none; padding: 0; font-size: 0.95em; }
.sample li { position: relative; padding-left: 1.7em; }
.sample .box { position: absolute; left: 0; top: 0.3em; width: 1em; height: 1em; border: 2px solid var(--plum-soft); border-radius: 3px; }
.sample-code { font-size: 0.85em; color: var(--clay-text); white-space: nowrap; }
@media (max-width: 30rem) { .sample { margin-left: 0; } .preview-cover { margin-bottom: -2.5rem; } }
.product .landing-preview img { filter: none; }
.buy-box { background: var(--white); border: 1px solid var(--line); border-radius: 14px; padding: 1.25rem 1.4rem 0.5rem; margin: 1.5rem 0; }
.buy-box .price { font-family: var(--serif); font-weight: 600; font-size: 2rem; line-height: 1; margin: 0 0 0.4rem; }
.buy-box .facts { font-size: 0.9em; color: var(--plum-soft); }
.signup { background: var(--white); border-radius: 14px; padding: 1.25rem 1.4rem 0.5rem; border: 1px solid var(--line); }
.form-note { color: var(--plum-soft); margin-top: 0.75rem; }

@media (max-width: 30rem) {
  .hero .text-link { margin-left: 0; }
}
@media (max-width: 48rem) { .hero-motif { display: none; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }
@media print {
  .site-header nav, .site-footer, .cta, .skip, .placeholder-banner { display: none; }
  body { background: #fff; font-size: 11pt; }
}