/* PlanProof Insights — shared by the index and every article page.
   Same tokens, fonts and menu as plan-proof.com (index.html). The menu bar is
   always dark, as on the home page; the page follows the visitor's light or
   dark setting. */
:root{
  --bg: #10151b; --panel: #1a222c; --border: #2b3642;
  --text: #e7eaee; --text-muted: #9aa5b1; --red: #d84a3a; --red-text: #e8705f;
  --measure: 68ch;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg: #f3f4f6; --panel: #ffffff; --border: #dde1e6;
    --text: #1a222c; --text-muted: #56606b; --red-text: #b33a2b;
  }
}
:root[data-theme="light"]{ --bg: #f3f4f6; --panel: #ffffff; --border: #dde1e6; --text: #1a222c; --text-muted: #56606b; --red-text: #b33a2b; }
:root[data-theme="dark"]{ --bg: #10151b; --panel: #1a222c; --border: #2b3642; --text: #e7eaee; --text-muted: #9aa5b1; --red-text: #e8705f; }

*{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; }
body{
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "IBM Plex Sans", system-ui, sans-serif; line-height: 1.7;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
a{ color: inherit; }
:focus-visible{ outline: 2px solid var(--red); outline-offset: 3px; border-radius: 3px; }
.skip{ position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--red); color: #fff; padding: 8px 14px; border-radius: 6px; text-decoration: none; }
.skip:focus{ left: 12px; }

/* ---- menu (copied from the home page) ---- */
.sitenav{ position: sticky; top: 0; z-index: 50; background: #10151b; border-bottom: 1px solid rgba(255,255,255,0.08); padding-top: env(safe-area-inset-top, 0px); }
.nav-inner{ max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: minmax(190px,auto) 1fr minmax(190px,auto); align-items: center; padding: 18px 24px; gap: 16px; }
.nav-links{ display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; }
.nav-links a{ color: #f2f3f5; text-decoration: none; font: 700 16px "Space Grotesk", sans-serif; }
.nav-links a:hover{ color: #fff; }
.nav-links a[aria-current="page"]{ color: #fff; box-shadow: inset 0 -2px 0 #d84a3a; }
.nav-toggle{ display: none; }
.brand{ font: 700 22px "Space Grotesk", sans-serif; color: #f2f3f5; text-decoration: none; display: flex; align-items: center; gap: 10px; }
.brand-mark{ width: 36px; height: 36px; flex-shrink: 0; color: #f2f3f5; }
.brand-plan{ color: #f2f3f5; } .brand-proof{ color: #d84a3a; }
@media (max-width: 1100px){ .nav-inner{ grid-template-columns: auto 1fr; } }
@media (max-width: 780px){
  .nav-inner{ grid-template-columns: 1fr auto; padding: 10px 16px; gap: 0; position: relative; }
  .brand{ font-size: 20px; } .brand-mark{ width: 32px; height: 32px; }
  .nav-toggle{
    display: inline-flex; align-items: center; gap: 8px; justify-self: end;
    font: 700 15px "Space Grotesk", sans-serif; color: #f2f3f5; background: transparent;
    border: 1px solid rgba(255,255,255,0.28); border-radius: 999px; padding: 0 14px; min-height: 40px; cursor: pointer;
  }
  .nav-toggle-bars{ display: inline-flex; flex-direction: column; gap: 3px; }
  .nav-toggle-bars span{ display: block; width: 16px; height: 2px; background: currentColor; border-radius: 2px; }
  .nav-links{
    display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: #10151b; padding: 4px 16px 10px; border-top: 1px solid rgba(255,255,255,0.10); box-shadow: 0 16px 30px rgba(0,0,0,.45);
  }
  .sitenav.open .nav-links{ display: flex; }
  .nav-links a{ padding: 12px 4px; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-links a[aria-current="page"]{ box-shadow: inset 3px 0 0 #d84a3a; padding-left: 12px; }
  .sitenav.open .nav-toggle{ border-color: #d84a3a; }
}

/* ---- page frame ---- */
.wrap{ max-width: calc(var(--measure) + 48px); margin: 0 auto; padding: 28px 24px 72px; }
.wrap-index{ max-width: 1040px; }
.crumbs{ font-size: 14px; color: var(--text-muted); display: flex; gap: 8px; margin-bottom: 28px; }
.crumbs a{ color: var(--text-muted); text-decoration: none; }
.crumbs a:hover{ color: var(--text); text-decoration: underline; }

.topic{ margin: 0 0 8px; font: 600 14px "IBM Plex Sans", sans-serif; color: var(--red-text); letter-spacing: .01em; }
.meta{ margin: 0; font-size: 14px; color: var(--text-muted); }

/* ---- article ---- */
.article-head h1{
  font: 700 clamp(30px, 5.2vw, 44px)/1.12 "Space Grotesk", sans-serif; letter-spacing: -0.015em;
  margin: 0 0 14px; text-wrap: balance;
}
.article-head{ margin-bottom: 26px; }

/* The one bold element: the answer, set like a finding in a PlanProof report. */
.short-answer{
  background: var(--panel); border: 1px solid var(--border); border-left: 4px solid var(--red);
  border-radius: 0 10px 10px 0; padding: 18px 22px 20px; margin: 0 0 38px;
}
.short-answer h2{ margin: 0 0 6px; font: 700 15px "Space Grotesk", sans-serif; color: var(--red-text); }
.short-answer p{ margin: 0; font-size: 18px; line-height: 1.6; color: var(--text); }

.prose{ font-size: 18px; }
.prose p, .prose li{ color: var(--text); }
.prose p{ margin: 0 0 1.1em; }
.prose h2{ font: 700 clamp(22px, 3.2vw, 27px)/1.25 "Space Grotesk", sans-serif; margin: 1.9em 0 .6em; scroll-margin-top: 90px; text-wrap: balance; }
.prose h3{ font: 700 20px/1.3 "Space Grotesk", sans-serif; margin: 1.6em 0 .5em; }
.prose ul, .prose ol{ padding-left: 1.3em; margin: 0 0 1.2em; }
.prose li{ margin-bottom: .55em; padding-left: .2em; }
.prose li::marker{ color: var(--red-text); font-weight: 600; }
.prose strong{ font-weight: 600; }
.prose a{ color: var(--red-text); text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose a:hover{ text-decoration-thickness: 2px; }
/* The sources list at the end reads smaller. */
.prose h2#sources{ font-size: 19px; margin-top: 2.4em; padding-top: 1.4em; border-top: 1px solid var(--border); }
.prose h2#sources + ul{ font-size: 15px; }
.prose h2#sources + ul li{ color: var(--text-muted); }

.share{ display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 34px 0 0; padding-top: 22px; border-top: 1px solid var(--border); }
.share span{ font-size: 14px; color: var(--text-muted); margin-right: 4px; }
/* Phones: "Share this article" on its own line, both buttons together below it. */
@media (max-width: 600px){
  .share span{ flex-basis: 100%; margin: 0; }
  .share .btn-small{ flex: 1 1 0; }
}

/* ---- buttons ---- */
.btn{
  display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 22px;
  border-radius: 999px; font: 700 15.5px "Space Grotesk", sans-serif; text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: background-color .15s, border-color .15s, color .15s;
}
.btn-primary{ background: #d84a3a; color: #fff; }
.btn-primary:hover{ background: #c13e2f; }
.btn-outline{ background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover{ border-color: #d84a3a; }
.btn-small{ min-height: 38px; padding: 0 16px; font-size: 14px; background: transparent; color: var(--text); border-color: var(--border); }
.btn-small:hover{ border-color: #d84a3a; }

/* ---- closing box ---- */
.cta{
  margin: 56px 0 0; padding: 28px 26px; border-radius: 12px; background: #10151b; color: #e7eaee;
  border: 1px solid #2b3642; box-shadow: inset 0 3px 0 #d84a3a;
}
.cta h2{ margin: 0 0 8px; font: 700 clamp(22px, 3vw, 26px)/1.25 "Space Grotesk", sans-serif; color: #fff; }
.cta p{ margin: 0 0 20px; color: #b8c0c9; font-size: 16px; max-width: 60ch; }
.cta-buttons{ display: flex; flex-wrap: wrap; gap: 12px; }
/* Laptops and tablets: the closing box is centred (Ahmed, 26 October 2026). */
@media (min-width: 601px){
  .cta{ text-align: center; }
  .cta p{ margin-left: auto; margin-right: auto; }
  .cta-buttons{ justify-content: center; }
}
.cta .btn-outline{ color: #f2f3f5; border-color: rgba(255,255,255,0.3); }
.cta .btn-outline:hover{ border-color: #d84a3a; }

/* ---- lists of articles (index and related) ---- */
.index-head{ max-width: var(--measure); margin: 18px 0 34px; }
.index-head h1{ font: 700 clamp(36px, 6vw, 52px)/1.05 "Space Grotesk", sans-serif; letter-spacing: -0.02em; margin: 0 0 14px; }
.lede{ font-size: 19px; color: var(--text-muted); margin: 0; }
.entry-list{ list-style: none; margin: 0; padding: 0; }
.entry{ position: relative; padding: 24px 0; border-top: 1px solid var(--border); }
.entry h2, .entry h3{ margin: 0 0 8px; font: 700 21px/1.3 "Space Grotesk", sans-serif; text-wrap: balance; }
.entry h2 a, .entry h3 a{ text-decoration: none; }
.entry h2 a::after, .entry h3 a::after{ content: ""; position: absolute; inset: 0; }   /* whole entry is the link */
.entry:hover h2 a, .entry:hover h3 a{ color: var(--red-text); }
.entry-summary{ margin: 0 0 10px; color: var(--text-muted); font-size: 16px; line-height: 1.6; }
.entry-grid{ display: grid; grid-template-columns: 1fr; column-gap: 48px; }
@media (min-width: 860px){
  .entry-grid{ grid-template-columns: 1fr 1fr; }
  .entry-grid .entry{ padding: 28px 0; }
}
.related{ margin-top: 56px; }
.related > h2{ font: 700 20px "Space Grotesk", sans-serif; margin: 0 0 6px; }
.related .entry h3{ font-size: 18px; }

/* ---- footer ---- */
.sitefooter{ border-top: 1px solid var(--border); padding: 30px 0; }
.footer-inner{ max-width: 1180px; margin: 0 auto; padding: 0 24px; display: flex; flex-wrap: wrap; gap: 14px 24px; justify-content: space-between; align-items: center; font-size: 14px; color: var(--text-muted); }
.footer-email a{ color: #d84a3a; text-decoration: underline; text-underline-offset: 3px; }
.footer-links{ display: flex; gap: 8px 20px; flex-wrap: wrap; }
.footer-links a{ color: var(--text); text-decoration: none; font-weight: 700; font-size: 15px; }
.footer-links a:hover{ color: #d84a3a; }

@media (max-width: 600px){
  .wrap{ padding: 18px 16px 56px; }
  .prose, .short-answer p{ font-size: 17px; }
  .short-answer{ padding: 16px 16px 18px; }
  .cta{ padding: 22px 18px; }
  .cta-buttons .btn{ flex: 1 1 100%; }
  .footer-inner{ padding: 0 16px; flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce){ *{ transition: none !important; } }
@media print{ .sitenav, .share, .cta, .related, .sitefooter, .crumbs{ display: none; } body{ background: #fff; color: #000; } }