/*
Theme Name: Purdum
Theme URI: https://andrewpurdum.com
Author: Andrew Purdum
Description: Editorial theme for AndrewPurdum.com. Direct response and digital marketing, taught as systems.
Version: 2.0
License: GNU General Public License v2 or later
Text Domain: purdum
*/

/* ============================================================
   TOKENS
   ============================================================ */
:root{
  --ink:#141210;
  --ink-2:#38332D;
  --ink-3:#6B635A;
  --ink-4:#9A9188;
  --rule:#E5E0D6;
  --rule-2:#EFEBE3;
  --paper:#FBFAF6;
  --paper-2:#F4F1EA;
  --paper-3:#EDE9E0;
  --accent:#C83A1B;
  --accent-ink:#A62D12;
  --accent-wash:#FBEDE8;
  --gold:#8A6A2F;

  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --measure:36rem;
  --wide:79rem;
  --gutter:clamp(1.15rem,5vw,3.25rem);
  --shadow:0 1px 2px rgba(20,18,16,.04),0 8px 24px -12px rgba(20,18,16,.10);
  --shadow-lg:0 2px 4px rgba(20,18,16,.05),0 24px 56px -20px rgba(20,18,16,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}

@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ink:#F4F0E8; --ink-2:#CFC8BC; --ink-3:#978E82; --ink-4:#6F6759;
    --rule:#332E27; --rule-2:#262220;
    --paper:#121110; --paper-2:#1A1816; --paper-3:#221F1C;
    --accent:#F2724C; --accent-ink:#FF8A63; --accent-wash:#2A1C16;
    --gold:#C9A465;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
    --shadow-lg:0 2px 4px rgba(0,0,0,.5),0 24px 56px -20px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"]{
  --ink:#F4F0E8; --ink-2:#CFC8BC; --ink-3:#978E82; --ink-4:#6F6759;
  --rule:#332E27; --rule-2:#262220;
  --paper:#121110; --paper-2:#1A1816; --paper-3:#221F1C;
  --accent:#F2724C; --accent-ink:#FF8A63; --accent-wash:#2A1C16;
  --gold:#C9A465;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-lg:0 2px 4px rgba(0,0,0,.5),0 24px 56px -20px rgba(0,0,0,.7);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:var(--sans);font-size:1.0625rem;line-height:1.65;
  font-optical-sizing:auto;text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
::selection{background:var(--accent);color:#fff}

.wrap{max-width:var(--wide);margin-inline:auto;padding-inline:var(--gutter)}
.measure{max-width:var(--measure);margin-inline:auto}
.skip{position:absolute;left:-9999px}
.skip:focus{left:1rem;top:1rem;background:var(--ink);color:var(--paper);padding:.7rem 1.1rem;z-index:99;border-radius:.3rem}

/* ============================================================
   TYPE
   ============================================================ */
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;letter-spacing:-.021em;line-height:1.1;color:var(--ink);margin:0 0 .5em;font-variation-settings:"opsz" 96}
h1{font-size:clamp(2.2rem,5.4vw,3.75rem);letter-spacing:-.028em}
h2{font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.14}
h3{font-size:clamp(1.18rem,2vw,1.42rem);line-height:1.25;font-variation-settings:"opsz" 36}
.kicker{font-family:var(--mono);font-size:.695rem;letter-spacing:.17em;text-transform:uppercase;color:var(--accent);font-weight:500;margin:0 0 1.1rem}
.dek{font-size:clamp(1.06rem,1.75vw,1.3rem);line-height:1.5;color:var(--ink-2);font-family:var(--serif);font-weight:400;font-variation-settings:"opsz" 30}

/* ============================================================
   MASTHEAD
   ============================================================ */
.masthead{border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:60;
  background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:saturate(1.4) blur(14px)}
.masthead__in{display:flex;align-items:center;gap:1.5rem;height:4.4rem}
.brand{font-family:var(--serif);font-weight:600;font-size:1.32rem;letter-spacing:-.025em;
  text-decoration:none;white-space:nowrap;display:flex;align-items:center;gap:.6rem;color:var(--ink);
  font-variation-settings:"opsz" 40}
.brand em{font-style:normal;color:var(--accent)}
.brand__mark{width:1.55rem;height:1.55rem;border-radius:.36rem;flex:none}
.nav{display:flex;gap:1.5rem;margin-left:auto;align-items:center}
.nav a{text-decoration:none;font-size:.79rem;font-weight:550;letter-spacing:.045em;
  text-transform:uppercase;color:var(--ink-3);padding:.35rem 0;position:relative;transition:color .16s var(--ease)}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1.5px;background:var(--accent);transition:right .22s var(--ease)}
.nav a:hover{color:var(--ink)}
.nav a:hover::after,.nav a[aria-current]::after{right:0}
.nav a[aria-current]{color:var(--ink)}
.nav__cta{background:var(--ink);color:var(--paper)!important;padding:.55rem 1rem!important;border-radius:2rem;
  font-size:.75rem!important;transition:transform .16s var(--ease),background .16s var(--ease)}
.nav__cta::after{display:none}
.nav__cta:hover{transform:translateY(-1px);background:var(--accent)}
.themetoggle{background:none;border:1px solid var(--rule);border-radius:2rem;width:2.1rem;height:2.1rem;
  cursor:pointer;color:var(--ink-3);font-size:.85rem;line-height:1;display:grid;place-items:center;flex:none;
  transition:border-color .16s var(--ease),color .16s var(--ease)}
.themetoggle:hover{border-color:var(--ink-3);color:var(--ink)}
.navtoggle{display:none;margin-left:auto;background:none;border:1px solid var(--rule);border-radius:.4rem;
  padding:.45rem .7rem;color:var(--ink);font:inherit;font-size:.8rem;cursor:pointer}
@media(max-width:900px){
  .nav{position:fixed;inset:4.4rem 0 auto 0;background:var(--paper);flex-direction:column;align-items:flex-start;
    gap:0;padding:1rem var(--gutter) 1.6rem;border-bottom:1px solid var(--rule);display:none;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:.75rem 0;font-size:.95rem;width:100%;text-transform:none;letter-spacing:0}
  .nav__cta{margin-top:.6rem;text-align:center}
  .navtoggle{display:block}
  .themetoggle{position:absolute;right:calc(var(--gutter) + 5rem);top:-3.25rem}
}

/* reading progress */
.progress{position:fixed;top:0;left:0;height:2px;background:var(--accent);width:0;z-index:70;transition:width .1s linear}

/* ============================================================
   HERO
   ============================================================ */
.hero{padding:clamp(3.75rem,9vw,7.5rem) 0 clamp(2.75rem,6vw,4.75rem);border-bottom:1px solid var(--rule)}
.hero h1{max-width:17ch;text-wrap:balance}
.hero .dek{max-width:54ch;margin-top:1.5rem}
.hero__meta{display:flex;flex-wrap:wrap;gap:.65rem 2.25rem;margin-top:2.4rem;
  font-family:var(--mono);font-size:.73rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3)}
.hero__meta span{display:flex;align-items:center;gap:.55rem}
.hero__meta span::before{content:"";width:5px;height:5px;background:var(--accent);border-radius:50%;flex:none}
.hero__actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:2.5rem}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--sans);font-size:.88rem;font-weight:600;
  letter-spacing:.005em;text-decoration:none;padding:.82rem 1.5rem;border-radius:2rem;border:1px solid transparent;
  transition:transform .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease);cursor:pointer}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--ink);color:var(--paper)}
.btn--primary:hover{background:var(--accent)}
.btn--ghost{border-color:var(--rule);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:var(--paper-2)}

/* ============================================================
   CARDS
   ============================================================ */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(19.5rem,1fr));
  border-top:1px solid var(--rule)}
.card{background:var(--paper);padding:1.9rem 1.75rem 2.1rem;display:flex;flex-direction:column;gap:.7rem;
  text-decoration:none;transition:background .2s var(--ease);position:relative;
  border-bottom:1px solid var(--rule);border-right:1px solid var(--rule)}
.card:hover{background:var(--paper-2)}
.card__silo{font-family:var(--mono);font-size:.655rem;letter-spacing:.155em;text-transform:uppercase;color:var(--accent);font-weight:500}
.card__title{font-family:var(--serif);font-size:1.26rem;line-height:1.22;font-weight:600;letter-spacing:-.017em;
  text-wrap:balance;margin:0;color:var(--ink);font-variation-settings:"opsz" 36;transition:color .16s var(--ease)}
.card:hover .card__title{color:var(--accent-ink)}
.card__dek{font-size:.92rem;color:var(--ink-3);line-height:1.56;margin:0}
.card__date{margin-top:auto;padding-top:1rem;font-family:var(--mono);font-size:.675rem;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-4)}
.card__figure{background:var(--paper-3);aspect-ratio:3/2;overflow:hidden;margin:-.3rem 0 .4rem;border-radius:.2rem}
.card__figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card__figure img{transform:scale(1.03)}
.card--lead{grid-column:1/-1}
@media(min-width:62rem){
  .card--lead{display:grid;grid-template-columns:1.05fr 1fr;gap:3rem;align-items:center;padding:3rem 1.75rem}
  .card--lead .card__figure{margin:0;aspect-ratio:4/3}
  .card--lead .card__title{font-size:clamp(1.85rem,3.4vw,2.7rem);font-variation-settings:"opsz" 72}
  .card--lead .card__dek{font-size:1.03rem}
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.sechead{display:flex;align-items:baseline;gap:1rem;padding:3.75rem 0 1.5rem}
.sechead h2{margin:0}
.sechead a{margin-left:auto;font-family:var(--mono);font-size:.71rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-3);text-decoration:none;white-space:nowrap;transition:color .16s var(--ease)}
.sechead a:hover{color:var(--accent)}

/* ============================================================
   BREADCRUMBS
   ============================================================ */
.crumbs{font-family:var(--mono);font-size:.69rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-4);
  padding:1.6rem 0 0;display:flex;gap:.55rem;flex-wrap:wrap}
.crumbs a{text-decoration:none;color:var(--ink-3)}
.crumbs a:hover{color:var(--accent)}

/* ============================================================
   ARTICLE
   ============================================================ */
.article{padding:clamp(1.5rem,4vw,2.5rem) 0 4rem}
.article__head{max-width:46rem;margin:0 auto 2.75rem}
.article__head h1{text-wrap:balance;margin-bottom:0}
.article__meta{display:flex;flex-wrap:wrap;gap:.5rem 1.6rem;margin-top:1.9rem;padding-top:1.3rem;
  border-top:1px solid var(--rule);font-family:var(--mono);font-size:.715rem;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-3)}
.article__hero{margin:0 0 3.25rem;background:var(--paper-3);border-radius:.25rem;overflow:hidden}
.article__hero img{width:100%;aspect-ratio:3/2;object-fit:cover}

.prose{max-width:var(--measure);margin-inline:auto;font-size:1.13rem;line-height:1.73;color:var(--ink-2)}
.prose > *{margin:0 0 1.38em}
.prose h2{margin:2.7em 0 .62em;color:var(--ink);font-size:clamp(1.48rem,2.6vw,1.9rem);scroll-margin-top:6rem}
.prose h3{margin:2.15em 0 .5em;color:var(--ink);scroll-margin-top:6rem}
.prose strong{color:var(--ink);font-weight:650}
.prose em{font-style:italic}
.prose a{color:var(--accent-ink);text-decoration-thickness:1px;text-underline-offset:.17em;
  transition:background .14s var(--ease)}
.prose a:hover{background:var(--accent-wash)}
.prose img{margin:2.5em 0;width:100%;border-radius:.25rem}
.prose figure{margin:2.5em 0}
.prose figcaption{font-family:var(--mono);font-size:.7rem;color:var(--ink-4);margin-top:.65rem;letter-spacing:.045em;line-height:1.5}
.prose blockquote{margin:2.4em 0;padding:0 0 0 1.5rem;border-left:2px solid var(--accent);
  font-family:var(--serif);font-size:1.26rem;line-height:1.44;color:var(--ink);font-variation-settings:"opsz" 40}
.prose hr{border:0;border-top:1px solid var(--rule);margin:3.2em 0}

/* first paragraph after the answer box gets a refined lead-in */
.prose > .answer + p{font-size:1.2rem;line-height:1.62;color:var(--ink)}

/* the extractable answer */
.answer{background:var(--paper-2);border-left:3px solid var(--accent);padding:1.6rem 1.7rem;
  margin:0 auto 2.7em;max-width:var(--measure);font-size:1.06rem;line-height:1.6;color:var(--ink);border-radius:0 .25rem .25rem 0}
.answer p{margin:0}
.answer__label{font-family:var(--mono);font-size:.655rem;letter-spacing:.155em;text-transform:uppercase;
  color:var(--accent);display:block;margin-bottom:.65rem;font-weight:500}

/* FAQ */
.prose h3.faq-q{font-size:1.1rem;margin:2em 0 .4em;font-variation-settings:"opsz" 30}
.prose .faq-a{color:var(--ink-3);font-size:1.03rem}
.prose .faq-a p{margin:0}

/* P.S. */
.ps{max-width:var(--measure);margin:3.6rem auto 0;padding-top:1.7rem;border-top:1px solid var(--rule);
  font-size:1.02rem;color:var(--ink-3);line-height:1.64}
.ps strong{color:var(--ink)}

/* table of contents */
.toc{max-width:var(--measure);margin:0 auto 2.8em;padding:1.35rem 1.5rem;border:1px solid var(--rule);
  border-radius:.3rem;background:var(--paper-2)}
.toc__label{font-family:var(--mono);font-size:.655rem;letter-spacing:.155em;text-transform:uppercase;
  color:var(--ink-4);font-weight:500;margin:0 0 .8rem}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:toc}
.toc li{counter-increment:toc;margin:0 0 .5rem;padding-left:2rem;position:relative;font-size:.97rem;line-height:1.45}
.toc li:last-child{margin-bottom:0}
.toc li::before{content:counter(toc,decimal-leading-zero);position:absolute;left:0;top:.12em;
  font-family:var(--mono);font-size:.7rem;color:var(--accent)}
.toc a{text-decoration:none;color:var(--ink-2);border-bottom:1px solid transparent}
.toc a:hover{color:var(--ink);border-bottom-color:var(--accent)}

/* author card */
.author{max-width:var(--measure);margin:4rem auto 0;padding:1.9rem;border:1px solid var(--rule);
  border-radius:.35rem;background:var(--paper-2);display:flex;gap:1.4rem;align-items:flex-start}
.author__mark{width:3.4rem;height:3.4rem;border-radius:.5rem;flex:none}
.author__name{font-family:var(--serif);font-weight:600;font-size:1.12rem;color:var(--ink);margin:0 0 .35rem;
  font-variation-settings:"opsz" 30}
.author__bio{margin:0;font-size:.95rem;color:var(--ink-3);line-height:1.6}
.author__bio a{color:var(--accent-ink)}
@media(max-width:34rem){.author{flex-direction:column;gap:1rem}}

/* prev / next */
.pagenav{max-width:var(--measure);margin:3rem auto 0;display:grid;gap:1px;background:var(--rule);
  border:1px solid var(--rule);border-radius:.35rem;overflow:hidden;grid-template-columns:1fr 1fr}
.pagenav a{background:var(--paper);padding:1.4rem 1.5rem;text-decoration:none;display:block;transition:background .18s var(--ease)}
.pagenav a:hover{background:var(--paper-2)}
.pagenav__dir{font-family:var(--mono);font-size:.655rem;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-4);display:block;margin-bottom:.5rem}
.pagenav__title{font-family:var(--serif);font-size:1rem;line-height:1.3;color:var(--ink);font-variation-settings:"opsz" 24}
.pagenav a:last-child{text-align:right}
@media(max-width:34rem){.pagenav{grid-template-columns:1fr}.pagenav a:last-child{text-align:left}}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta{background:var(--ink);color:#F4F0E8;margin-top:5rem;padding:clamp(3.5rem,8vw,5.5rem) 0}
.cta h2{color:#FBFAF6;max-width:20ch;text-wrap:balance;margin-bottom:.6rem}
.cta p{max-width:48ch;color:#B8B0A4;font-size:1.06rem;line-height:1.62;margin:0 0 2rem}
.cta .kicker{color:#F2724C}
.cta .btn--primary{background:#FBFAF6;color:#141210}
.cta .btn--primary:hover{background:#F2724C;color:#fff}
.cta .btn--ghost{border-color:#3A342C;color:#F4F0E8}
.cta .btn--ghost:hover{border-color:#F4F0E8;background:transparent}
.cta__actions{display:flex;flex-wrap:wrap;gap:.8rem}

/* proof strip */
.proof{border-bottom:1px solid var(--rule);padding:2.5rem 0}
.proof__grid{display:grid;gap:2.5rem;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr))}
.proof__n{font-family:var(--serif);font-size:clamp(1.9rem,3.4vw,2.5rem);font-weight:600;color:var(--ink);
  line-height:1;letter-spacing:-.03em;font-variation-settings:"opsz" 60}
.proof__l{font-family:var(--mono);font-size:.69rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3);margin-top:.6rem;line-height:1.5}

/* topic index */
.topics{display:grid;grid-template-columns:repeat(auto-fit,minmax(13.2rem,1fr));border-top:1px solid var(--rule)}
.topic{background:var(--paper);padding:2rem 1.75rem;text-decoration:none;display:block;
  transition:background .2s var(--ease);border-bottom:1px solid var(--rule);border-right:1px solid var(--rule)}
.topic:hover{background:var(--paper-2)}
.topic__n{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;color:var(--ink-4);display:block;margin-bottom:.9rem}
.topic__t{font-family:var(--serif);font-size:1.14rem;font-weight:600;color:var(--ink);margin:0 0 .5rem;
  font-variation-settings:"opsz" 30;transition:color .16s var(--ease)}
.topic:hover .topic__t{color:var(--accent-ink)}
.topic__d{font-size:.9rem;color:var(--ink-3);line-height:1.55;margin:0}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{border-top:1px solid var(--rule);padding:4rem 0 4.5rem;background:var(--paper-2)}
.footer__grid{display:grid;gap:2.75rem;grid-template-columns:1.4fr repeat(auto-fit,minmax(10rem,1fr))}
.footer h4{font-family:var(--mono);font-size:.685rem;letter-spacing:.155em;text-transform:uppercase;
  color:var(--ink-4);font-weight:500;margin:0 0 1.1rem}
.footer nav{display:flex;flex-direction:column;gap:.6rem}
.footer nav a{text-decoration:none;font-size:.94rem;color:var(--ink-2);transition:color .16s var(--ease)}
.footer nav a:hover{color:var(--accent)}
.footer__brand{font-family:var(--serif);font-size:1.2rem;font-weight:600;color:var(--ink);margin:0 0 .8rem;
  font-variation-settings:"opsz" 36}
.footer__brand em{font-style:normal;color:var(--accent)}
.footer__blurb{margin:0;color:var(--ink-3);font-size:.94rem;line-height:1.62;max-width:34ch}
.footer__base{margin-top:3.25rem;padding-top:1.7rem;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;
  gap:1rem;align-items:center;font-family:var(--mono);font-size:.69rem;letter-spacing:.06em;color:var(--ink-4)}

/* ============================================================
   PAGER
   ============================================================ */
.pager{display:flex;gap:.55rem;justify-content:center;padding:3.25rem 0;flex-wrap:wrap;list-style:none}
.pager ul{display:flex;gap:.55rem;list-style:none;padding:0;margin:0;flex-wrap:wrap}
.pager a,.pager span{font-family:var(--mono);font-size:.79rem;padding:.6rem .9rem;border:1px solid var(--rule);
  text-decoration:none;color:var(--ink-3);border-radius:.25rem;display:block;transition:all .16s var(--ease)}
.pager a:hover{border-color:var(--ink);color:var(--ink)}
.pager .current{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* Grids draw bottom+right rules on each cell; the container is 1px wider than its
   box and clips, so the final column never shows a hanging vertical rule and short
   final rows leave clean paper instead of a shaded empty cell. */
.grid,.topics{overflow:hidden;width:calc(100% + 1px)}
.proof__grid{align-items:start}