/* ============================================================
   Neuropathy.blog — shared stylesheet
   BRAND SWAP: edit the variables in :root below (only these ~10 lines)
   and every page updates. Audience is 55+, so type is large & high-contrast.
   ============================================================ */

:root {
  /* --- BRAND (swap these) --- */
  --color-brand:      #1c6b5a;   /* primary (links, headings accents) */
  --color-brand-dark: #124b3f;   /* hover / darker */
  --color-accent:     #c8792b;   /* CTA / highlights */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-head: Georgia, "Times New Roman", serif;

  /* --- system (usually leave as-is) --- */
  --color-text:   #1f2933;
  --color-muted:  #52606d;
  --color-bg:     #ffffff;
  --color-soft:   #f4f6f5;
  --color-border: #d9e0dd;
  --measure: 720px;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 19px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-brand); }
a:hover { color: var(--color-brand-dark); }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--measure); margin: 0 auto; padding: 0 20px; }
main { padding: 8px 0 40px; }

/* ---------- Header / nav ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1080px; padding-top: 14px; padding-bottom: 14px; gap: 16px;
}
.brand { font-family: var(--font-head); font-weight: 700; font-size: 1.35rem;
  color: var(--color-brand); text-decoration: none; }
.site-nav a { color: var(--color-text); text-decoration: none; margin-left: 18px; font-size: .95rem; }
.site-nav a:hover { color: var(--color-brand); }
@media (max-width: 640px){ .site-nav a { margin-left: 12px; font-size: .85rem; } .brand{font-size:1.15rem;} }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: .85rem; color: var(--color-muted); margin: 18px 0 6px; }
.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:hover { color: var(--color-brand); }

/* ---------- Typography ---------- */
h1 { font-family: var(--font-head); font-size: 2.1rem; line-height: 1.2; margin: .3em 0 .5em; }
h2 { font-family: var(--font-head); font-size: 1.55rem; line-height: 1.25; margin: 1.8em 0 .5em; }
h3 { font-size: 1.2rem; margin: 1.4em 0 .4em; }
p, li { font-size: 1.05rem; }
@media (max-width: 640px){ h1{font-size:1.7rem;} h2{font-size:1.35rem;} body{font-size:18px;} }

/* ---------- Answer-first block ---------- */
.answer {
  background: var(--color-soft);
  border-left: 4px solid var(--color-brand);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 0 0 24px;
  font-size: 1.12rem;
}
.answer p { margin: 0; font-weight: 500; }

/* ---------- Stat callout ---------- */
.stat {
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 16px 18px; margin: 22px 0;
}
.stat .num { font-family: var(--font-head); font-weight: 700; color: var(--color-accent); }
.stat .src { display:block; font-size: .8rem; color: var(--color-muted); margin-top: 6px; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; margin: 20px 0; }
table { border-collapse: collapse; width: 100%; font-size: .98rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
thead th { background: var(--color-soft); }

/* ---------- Figures ---------- */
figure { margin: 24px 0; }
figure img { width: 100%; border-radius: var(--radius); background: var(--color-soft); }
figcaption { font-size: .85rem; color: var(--color-muted); margin-top: 8px; text-align: center; }

/* ---------- CTA box (bridge link) ---------- */
.cta {
  background: var(--color-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px; margin: 28px 0; text-align: center;
}
.cta a.btn, a.btn {
  display: inline-block; background: var(--color-accent); color: #fff;
  text-decoration: none; font-weight: 700; font-size: 1.08rem;
  padding: 14px 26px; border-radius: 999px; margin-top: 6px;
}
.cta a.btn:hover, a.btn:hover { background: #a5631f; color:#fff; }
.cta .sub { font-size: .85rem; color: var(--color-muted); margin-top: 10px; }

/* ---------- FAQ ---------- */
.faq h3 { margin-top: 1.2em; }
.faq p { margin-top: .2em; color: var(--color-text); }

/* ---------- Sources / disclaimer / byline ---------- */
.sources { font-size: .9rem; color: var(--color-muted); }
.sources ol { padding-left: 20px; }
.byline {
  font-size: .92rem; color: var(--color-muted);
  border: 1px dashed var(--color-border); border-radius: var(--radius);
  padding: 10px 14px; margin: 10px 0 24px; background: var(--color-soft);
}
.disclaimer {
  font-size: .85rem; color: var(--color-muted); font-style: italic;
  border-top: 1px solid var(--color-border); padding-top: 16px; margin-top: 32px;
}
.internal-links { background: var(--color-soft); border-radius: var(--radius); padding: 16px 20px; margin: 26px 0; }
.internal-links ul { margin: .3em 0; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border); background: var(--color-soft);
  margin-top: 40px; padding: 26px 0; font-size: .88rem; color: var(--color-muted);
}
.site-footer .container { max-width: 1080px; }
.site-footer a { color: var(--color-muted); text-decoration: none; margin-right: 16px; }
.site-footer a:hover { color: var(--color-brand); }

/* ============================================================
   VSL PAGES (body class="vsl") — video sales pages.
   Minimal, distraction-free: no nav, centered player, CTA below.
   ============================================================ */
body.vsl { background: #0f1417; color: #eef2f1; }
body.vsl .site-header { background: #0f1417; border-bottom: 1px solid #23303a; }
body.vsl .site-nav { display: none; }
body.vsl .brand { color: #eef2f1; }
body.vsl main { padding: 24px 0 48px; }
body.vsl .container { max-width: 860px; text-align: center; }
body.vsl h1 {
  color: #fff; font-size: 1.6rem; line-height: 1.3;
  margin: 0 0 22px; font-family: var(--font-body); font-weight: 700;
}
@media (max-width: 640px){ body.vsl h1 { font-size: 1.25rem; } }
body.vsl .player-wrap { margin: 0 auto 28px; }
body.vsl .vsl-cta { margin: 26px auto 0; max-width: 560px; }
body.vsl .vsl-cta a.btn { font-size: 1.15rem; padding: 18px 32px; width: 100%; box-sizing: border-box; }
body.vsl .vsl-note { font-size: .9rem; color: #9fb0ad; margin-top: 14px; }
body.vsl .site-footer {
  background: #0f1417; border-top: 1px solid #23303a; color: #8b9a97;
}
body.vsl .site-footer a { color: #8b9a97; }
body.vsl .site-footer a:hover { color: #fff; }
body.vsl .disclaimer { color: #8b9a97; border-top-color: #23303a; }

/* ============================================================
   BRIDGE PAGES (body class="bridge") — one-way valve:
   hide nav, no internal links, center the CTA.
   ============================================================ */
body.bridge .site-nav,
body.bridge .breadcrumb { display: none; }
body.bridge .disclosure {
  font-size: .82rem; color: var(--color-muted);
  background: var(--color-soft); border-radius: var(--radius);
  padding: 10px 14px; margin: 14px 0;
}
body.bridge h1 { font-size: 1.9rem; }
body.bridge main { text-align: left; }
body.bridge .cta { border-color: var(--color-accent); }