/*
  karenfrith.com — category leadership site
  Editorial register. Serif headings. Deep green accent as ecosystem nod.
  Shared stylesheet used across all pages.
*/

:root{
  --bg:#FDFCF8;
  --bg-warm:#F5F1E8;
  --ink:#1A1A1A;
  --ink-soft:#3B3B3B;
  --mut:#666;
  --dim:#8A8A82;
  --line:#E5E1D5;
  --line-soft:#EFEBDF;
  --green:#2D5F1F;
  --green-soft:#4A7D3A;
  --gold:#8A6D2A;
  --serif:"Cormorant Garamond","EB Garamond",Georgia,"Times New Roman",serif;
  --sans:"Inter","Helvetica Neue",Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}

/* NAV */
.nav{
  border-bottom:1px solid var(--line);
  background:var(--bg);
  position:sticky;top:0;z-index:20;
}
.nav-inner{
  max-width:1120px;margin:0 auto;
  padding:20px 32px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-brand{
  font-family:var(--serif);
  font-size:22px;font-weight:600;letter-spacing:0.3px;
  color:var(--ink);text-decoration:none;
}
.nav-brand .rt{color:var(--green);font-size:14px;vertical-align:super}
.nav-links{
  display:flex;gap:32px;
  font-size:14px;font-weight:500;letter-spacing:0.2px;
}
.nav-links a{
  color:var(--ink-soft);text-decoration:none;
  transition:color .15s;padding:4px 0;
  border-bottom:1px solid transparent;
}
.nav-links a:hover, .nav-links a.active{color:var(--green);border-bottom-color:var(--green)}
@media(max-width:640px){
  .nav-inner{padding:16px 20px;flex-direction:column;gap:14px;align-items:flex-start}
  .nav-links{width:100%;gap:20px;flex-wrap:wrap}
}

/* LAYOUT */
.container{max-width:1120px;margin:0 auto;padding:0 32px}
.container-narrow{max-width:780px;margin:0 auto;padding:0 32px}
.container-reading{max-width:680px;margin:0 auto;padding:0 32px}
@media(max-width:640px){
  .container,.container-narrow,.container-reading{padding:0 20px}
}

/* TYPOGRAPHY */
h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:600;
  color:var(--ink);
  letter-spacing:-0.5px;
  line-height:1.15;
}
h1{font-size:64px;font-weight:600;letter-spacing:-1.5px;line-height:1.05}
h2{font-size:38px;font-weight:600;margin-bottom:24px}
h3{font-size:26px;font-weight:600;margin-bottom:14px}
h4{font-size:20px;font-weight:600;margin-bottom:10px}
@media(max-width:640px){
  h1{font-size:44px}
  h2{font-size:30px}
  h3{font-size:22px}
}
p{
  color:var(--ink-soft);
  font-size:17px;
  line-height:1.7;
  margin-bottom:1em;
}
p.lead{
  font-size:22px;
  color:var(--ink);
  line-height:1.5;
  font-weight:400;
  margin-bottom:1.5em;
}
p.eyebrow{
  font-size:12px;
  font-family:var(--sans);
  font-weight:600;
  letter-spacing:3px;
  text-transform:uppercase;
  color:var(--green);
  margin-bottom:14px;
}
p.dropcap::first-letter{
  font-family:var(--serif);
  font-size:72px;
  font-weight:600;
  line-height:1;
  float:left;
  margin:6px 12px 0 0;
  color:var(--green);
}
strong,b{color:var(--ink);font-weight:600}
a{color:var(--green);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--ink)}

/* SECTIONS */
section{padding:80px 0}
section.tight{padding:60px 0}
section.spacious{padding:120px 0}
.section-divider{
  width:60px;height:1px;background:var(--green);
  margin:60px 0;
}
.section-divider.center{margin:60px auto}

/* HERO / MASTHEAD */
.masthead{
  padding:80px 0 100px;
  border-bottom:1px solid var(--line);
}
.masthead-inner{
  display:grid;
  grid-template-columns:1fr 300px;
  gap:80px;align-items:center;
}
@media(max-width:900px){
  .masthead-inner{grid-template-columns:1fr;gap:40px}
}
.masthead h1{margin-bottom:20px}
.masthead .title-line{color:var(--green);font-family:var(--sans);font-size:15px;font-weight:500;letter-spacing:2px;text-transform:uppercase;margin-bottom:14px}
.masthead .lede{
  font-family:var(--serif);
  font-size:26px;font-weight:400;
  line-height:1.45;color:var(--ink-soft);
  margin-top:30px;max-width:600px;
}
.masthead .lede em{font-style:italic;color:var(--green-soft)}
.masthead-portrait{
  width:100%;max-width:280px;justify-self:end;
  border:1px solid var(--line);
  aspect-ratio:1/1;overflow:hidden;
}
@media(max-width:900px){.masthead-portrait{justify-self:start;max-width:200px}}
.masthead-portrait img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(1);
  display:block;
}

/* PULL QUOTE */
.pull-quote{
  border-left:2px solid var(--green);
  padding:0 0 0 32px;
  margin:40px 0;
}
.pull-quote p{
  font-family:var(--serif);
  font-size:26px;font-weight:400;font-style:italic;
  line-height:1.4;color:var(--ink);
}

/* DOCTRINE CARDS */
.doctrine-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:40px;
}
@media(max-width:820px){.doctrine-grid{grid-template-columns:1fr;gap:24px}}
.doctrine-card{
  padding:36px 32px;
  border-top:2px solid var(--green);
  background:var(--bg);
}
.doctrine-card .n{
  font-family:var(--sans);font-size:12px;font-weight:600;
  letter-spacing:2px;color:var(--green);text-transform:uppercase;
  margin-bottom:14px;
}
.doctrine-card h3{margin-bottom:12px}
.doctrine-card p{font-size:16px;line-height:1.6;margin:0}

/* WORK / SECTION LIST */
.work-list{display:grid;gap:40px;margin-top:32px}
.work-item{
  padding:32px 0;border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:200px 1fr;gap:40px;align-items:baseline;
}
@media(max-width:640px){.work-item{grid-template-columns:1fr;gap:16px}}
.work-item:last-child{border-bottom:none}
.work-item .cat{
  font-family:var(--sans);font-size:12px;font-weight:600;
  letter-spacing:2.5px;color:var(--green);text-transform:uppercase;
}
.work-item h3{font-size:24px;margin-bottom:10px}
.work-item p{font-size:16px;margin-bottom:12px}
.work-item .learn{
  font-family:var(--sans);font-size:14px;font-weight:500;
  color:var(--green);text-decoration:none;
  border-bottom:1px solid var(--green);padding-bottom:2px;
}
.work-item .learn:hover{color:var(--ink);border-color:var(--ink)}

/* BOOK card */
.book-list{display:grid;gap:60px;margin-top:40px}
.book-item{
  display:grid;grid-template-columns:200px 1fr;gap:48px;
  align-items:start;padding-bottom:60px;
  border-bottom:1px solid var(--line);
}
.book-item:last-child{border-bottom:none}
@media(max-width:720px){.book-item{grid-template-columns:1fr;gap:24px}}
.book-cover{
  width:200px;aspect-ratio:2/3;
  background:linear-gradient(180deg,var(--bg-warm),#EDE7D6);
  border:1px solid var(--line);
  display:flex;flex-direction:column;justify-content:space-between;
  padding:24px 22px;position:relative;
  box-shadow:0 8px 30px -12px rgba(0,0,0,0.15);
}
.book-cover .imprint{
  font-family:var(--sans);font-size:9px;font-weight:600;
  letter-spacing:2.5px;color:var(--green);text-transform:uppercase;
}
.book-cover .book-title{
  font-family:var(--serif);
  font-size:22px;font-weight:600;
  line-height:1.15;color:var(--ink);
  letter-spacing:-0.3px;
}
.book-cover .book-author{
  font-family:var(--sans);font-size:11px;font-weight:600;
  letter-spacing:2px;color:var(--ink-soft);text-transform:uppercase;
}
.book-item h3{margin-bottom:8px}
.book-item .subtitle{
  font-family:var(--serif);font-size:19px;font-weight:400;font-style:italic;
  color:var(--ink-soft);margin-bottom:16px;
}

/* APPLIED WORK strip */
.applied-strip{
  background:var(--bg-warm);
  padding:60px 0;margin:80px 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.applied-strip .container{text-align:left}
.applied-strip .eyebrow{color:var(--green)}
.applied-strip h2{font-size:32px;margin-bottom:14px}
.applied-strip p{font-size:16px;max-width:640px;margin-bottom:20px}
.applied-strip .learn{
  font-family:var(--sans);font-size:14px;font-weight:500;
  color:var(--green);text-decoration:none;
  border-bottom:1px solid var(--green);padding-bottom:2px;
}
.applied-strip .learn:hover{color:var(--ink);border-color:var(--ink)}

/* Instrument list on applied-work page */
.instrument{
  padding:40px 0;border-bottom:1px solid var(--line);
}
.instrument:last-child{border-bottom:none}
.instrument h3{margin-bottom:6px}
.instrument .url{
  font-family:"SF Mono","Courier New",monospace;
  font-size:13px;color:var(--dim);margin-bottom:12px;
  display:block;
}
.instrument p{font-size:16px;margin-bottom:10px}

/* CONSTRAINT BLOCK on doctrine page */
.constraint-block{
  padding:60px 0;border-top:1px solid var(--line);
}
.constraint-block:first-child{border-top:none;padding-top:40px}
.constraint-block .n{
  font-family:var(--sans);font-size:12px;font-weight:600;
  letter-spacing:3px;color:var(--green);text-transform:uppercase;
  margin-bottom:12px;
}
.constraint-block h2{font-size:44px;margin-bottom:20px}
.constraint-block p{font-size:18px;line-height:1.7;margin-bottom:16px}
.constraint-block .lead{font-size:22px;margin-bottom:24px}

/* CONTACT strip */
.contact-strip{
  background:var(--bg-warm);
  padding:80px 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.contact-strip h2{margin-bottom:20px}
.contact-strip .email-list{
  display:grid;gap:14px;margin-top:32px;
}
.contact-strip .email-item{
  display:grid;grid-template-columns:160px 1fr;gap:24px;align-items:baseline;
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
@media(max-width:640px){.contact-strip .email-item{grid-template-columns:1fr;gap:4px}}
.contact-strip .email-cat{
  font-family:var(--sans);font-size:12px;font-weight:600;
  letter-spacing:2px;color:var(--green);text-transform:uppercase;
}
.contact-strip .email-item a{
  font-family:var(--serif);font-size:22px;font-weight:500;
  color:var(--ink);text-decoration:none;
}
.contact-strip .email-item a:hover{color:var(--green)}

/* FOOTER */
.site-footer{
  border-top:1px solid var(--line);
  padding:60px 0 40px;margin-top:100px;
  color:var(--mut);font-size:13px;
}
.site-footer .footer-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:40px;
}
@media(max-width:640px){.site-footer .footer-grid{grid-template-columns:1fr;gap:24px}}
.site-footer .footer-brand{
  font-family:var(--serif);font-size:20px;font-weight:600;
  color:var(--ink);margin-bottom:6px;letter-spacing:-0.2px;
}
.site-footer .footer-brand .rt{color:var(--green);font-size:12px;vertical-align:super}
.site-footer .footer-tag{
  font-family:var(--sans);font-size:13px;color:var(--mut);
  letter-spacing:0.3px;
}
.site-footer .footer-links{display:flex;flex-direction:column;gap:8px}
.site-footer .footer-links a{
  color:var(--ink-soft);text-decoration:none;font-size:14px;
  border-bottom:1px solid transparent;padding-bottom:2px;
  align-self:flex-start;
}
.site-footer .footer-links a:hover{color:var(--green);border-color:var(--green)}
.site-footer .copy{
  padding-top:32px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;font-size:12px;
  color:var(--dim);
}
@media(max-width:640px){.site-footer .copy{flex-direction:column;gap:8px}}

/* PAGE HEADERS */
.page-header{
  padding:60px 0 40px;border-bottom:1px solid var(--line);
}
.page-header h1{font-size:52px;margin-bottom:16px}
.page-header .lead{max-width:640px}

/* Utility */
.mt-lg{margin-top:60px}
.mt-md{margin-top:40px}
.mb-md{margin-bottom:40px}