/* AI Field Guide — shared styles */

:root{
  --paper:#F1F3EC;
  --paper-card:#FBFBF8;
  --ink:#1F2B22;
  --ink-soft:#3E4A3F;
  --forest:#2F5233;
  --forest-deep:#1E3A22;
  --ochre:#A85A22;
  --gold:#B8912B;
  --line:#D8DBC9;
  --max:1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Source Sans 3',sans-serif;
  font-size:17px;
  line-height:1.6;
}
img{max-width:100%;display:block;}
a{color:var(--forest-deep);text-decoration:none;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px;}

h1,h2,h3,h4{
  font-family:'Fraunces',serif;
  font-weight:600;
  color:var(--forest-deep);
  margin:0 0 .5em;
  line-height:1.15;
}
h1{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:500;}
h2{font-size:clamp(1.6rem,3vw,2.2rem);}
h3{font-size:1.3rem;}
p{margin:0 0 1em;}

.tag{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ochre);
  border:1px solid var(--ochre);
  padding:3px 10px;border-radius:2px;
  background:rgba(168,90,34,0.06);
}

/* header */
header.site{
  border-bottom:2px solid var(--ink);
  background:var(--paper);
  position:sticky;top:0;z-index:50;
}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:16px 0;
}
.nav .brand{flex:0 0 auto;}
.nav > ul{
  flex:1 1 auto;
  justify-content:flex-end;
  align-items:center;
  flex-wrap:wrap;
  row-gap:10px;
}
.brand{
  font-family:'Fraunces',serif;font-weight:600;font-size:1.3rem;
  color:var(--forest-deep);display:flex;align-items:baseline;gap:8px;
}
.brand small{
  font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ochre);
  letter-spacing:.1em;
}
.nav ul{list-style:none;display:flex;column-gap:20px;margin:0;padding:0;}
.nav a{
  font-family:'IBM Plex Mono',monospace;font-size:13px;letter-spacing:.03em;
  color:var(--ink-soft);text-transform:uppercase;
}
.nav a:hover, .nav a.active{color:var(--ochre);}
.nav-toggle{display:none;background:none;border:none;font-size:1.6rem;cursor:pointer;color:var(--ink);}

/* hero */
.hero{padding:70px 0 50px;border-bottom:1px solid var(--line);}
.hero .tag{margin-bottom:22px;}
.hero p.lead{font-size:1.2rem;color:var(--ink-soft);max-width:640px;}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}

.btn{
  font-family:'IBM Plex Mono',monospace;font-size:13px;letter-spacing:.03em;
  text-transform:uppercase;padding:12px 22px;border-radius:2px;
  display:inline-block;border:1.5px solid var(--forest-deep);
  transition:background .15s,color .15s;
}
.btn-primary{background:var(--forest-deep);color:var(--paper-card);}
.btn-primary:hover{background:var(--forest);}
.btn-outline{color:var(--forest-deep);background:transparent;}
.btn-outline:hover{background:var(--forest-deep);color:var(--paper-card);}

.signup-form{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;}
.signup-form input[type="email"]{
  flex:1;min-width:220px;padding:12px 16px;border:1px solid var(--line);border-radius:6px;
  font-family:inherit;font-size:1rem;background:var(--paper-card);color:var(--ink);
}
.signup-form input[type="email"]:focus{outline:2px solid var(--forest);outline-offset:1px;}
.signup-form .btn{padding:12px 22px;border:none;border-radius:6px;cursor:pointer;font-size:1rem;}

.level-complete-btn{margin-top:22px;}
.level-complete-btn.is-complete{background:var(--forest-deep);color:var(--paper-card);border-color:var(--forest-deep);}
.level-badge-done{
  display:inline-block;margin-left:10px;font-family:'IBM Plex Mono',monospace;font-size:11px;
  text-transform:uppercase;letter-spacing:.03em;color:var(--forest-deep);border:1px solid var(--forest-deep);
  border-radius:20px;padding:2px 10px;vertical-align:middle;
}

/* section */
section{padding:56px 0;}
.section-head{max-width:640px;margin-bottom:36px;}
.section-head .tag{margin-bottom:16px;}

/* specimen card grid — signature element */
.specimens{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:22px;
}
.specimen{
  background:var(--paper-card);
  border:1px solid var(--line);
  padding:22px 20px 20px;
  position:relative;
}
.specimen::before{
  content:attr(data-no);
  position:absolute;top:-11px;right:14px;
  background:var(--paper);
  font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--gold);
  padding:0 6px;letter-spacing:.05em;
}
.specimen h3{font-size:1.15rem;margin-bottom:6px;}
.specimen .kind{
  font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ochre);
  text-transform:uppercase;letter-spacing:.06em;display:block;margin-bottom:10px;
}
.specimen p{font-size:.96rem;color:var(--ink-soft);margin-bottom:0;}
.specimen-rule{border-top:1px dashed var(--line);margin:12px 0;}

/* steps (real sequence only) */
.steps{border-left:2px solid var(--line);margin-left:6px;}
.step{position:relative;padding:0 0 30px 30px;}
.step::before{
  content:attr(data-step);
  position:absolute;left:-15px;top:0;
  width:30px;height:30px;border-radius:50%;
  background:var(--forest-deep);color:var(--paper-card);
  font-family:'IBM Plex Mono',monospace;font-size:12px;
  display:flex;align-items:center;justify-content:center;
}
.step h3{margin-bottom:4px;font-size:1.1rem;}
.step p{color:var(--ink-soft);margin-bottom:0;}

/* two-col */
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:36px;}
@media (max-width:760px){.cols-2{grid-template-columns:1fr;}}

/* callout / faq */
.faq-item{border-bottom:1px solid var(--line);padding:18px 0;}
.faq-item h3{font-size:1.05rem;margin-bottom:6px;color:var(--ink);font-family:'Source Sans 3',sans-serif;font-weight:700;}
.faq-item p{color:var(--ink-soft);margin-bottom:0;}

.callout{
  background:var(--forest-deep);color:var(--paper-card);
  padding:48px 0;text-align:center;
}
.callout h2{color:var(--paper-card);}
.callout p{color:#CFE0CE;max-width:520px;margin:0 auto 24px;}
.callout .btn-primary{background:var(--gold);border-color:var(--gold);color:var(--ink);}
.callout .btn-primary:hover{background:#CFA23C;}

/* footer */
footer{border-top:2px solid var(--ink);padding:36px 0;font-size:.9rem;color:var(--ink-soft);}
footer .foot-row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;}
footer a{color:var(--ink-soft);}
footer .flinks{display:flex;gap:18px;flex-wrap:wrap;list-style:none;padding:0;margin:0;}
footer .flinks a:hover{color:var(--ochre);}

/* tools grid */
.tool-card{
  background:var(--paper-card);border:1px solid var(--line);
  padding:20px;display:flex;gap:14px;align-items:flex-start;
}
.tool-icon{
  width:44px;height:44px;border-radius:6px;background:var(--forest-deep);
  color:var(--paper-card);display:flex;align-items:center;justify-content:center;
  font-family:'Fraunces',serif;font-weight:600;flex-shrink:0;
}
.tool-card h3{margin-bottom:4px;font-size:1.05rem;}
.tool-card p{color:var(--ink-soft);font-size:.92rem;margin-bottom:8px;}
.tool-card a.try{font-family:'IBM Plex Mono',monospace;font-size:12px;text-transform:uppercase;color:var(--ochre);}

/* lesson page */
.lesson-body{max-width:700px;}
.lesson-body h2{margin-top:1.6em;}
.lesson-body ul{padding-left:1.3em;}
.lesson-meta{
  font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-soft);
  display:flex;gap:18px;margin-bottom:18px;text-transform:uppercase;letter-spacing:.04em;
}
.example-box{
  background:var(--paper-card);border-left:3px solid var(--gold);
  padding:16px 18px;margin:20px 0;font-size:.96rem;
}
.example-box strong{color:var(--forest-deep);}

/* contact form */
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-family:'IBM Plex Mono',monospace;font-size:12px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px;color:var(--ink-soft);}
.form-field input,.form-field textarea{
  width:100%;padding:11px 12px;border:1px solid var(--line);background:var(--paper-card);
  font-family:'Source Sans 3',sans-serif;font-size:1rem;color:var(--ink);
}
.form-field input:focus,.form-field textarea:focus{outline:2px solid var(--forest);outline-offset:1px;}

@media (max-width:720px){
  .nav{padding:18px 0;}
  .nav ul{display:none;}
  .nav-toggle{display:block;}
  .nav ul.open{
    display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;
    background:var(--paper);border-bottom:2px solid var(--ink);padding:16px 28px;gap:14px;
    max-height:calc(100vh - 64px);overflow-y:auto;
  }
}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto;}}

/* extracted from inline styles (index.html) for SEO/performance cleanliness */
.hero-updated{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.04em;margin-top:20px;}
.section-alt{background:var(--paper-card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.list-muted{color:var(--ink-soft);padding-left:1.2em;}
.lead-muted{max-width:62ch;color:var(--ink-soft);}


/* Highly visible content links. Navigation/buttons/footer keep their own styles. */
section .wrap p a:not(.btn),
section .wrap li a:not(.btn),
.lesson-body a:not(.btn),
.example-box a:not(.btn),
.lead-muted a:not(.btn){
  color:#b42318;
  text-decoration:underline !important;
  text-decoration-thickness:2px !important;
  text-underline-offset:3px;
  font-weight:700;
  background:#fff1e8;
  padding:1px 3px;
  border-radius:3px;
}
section .wrap p a:not(.btn):hover,
section .wrap li a:not(.btn):hover,
.lesson-body a:not(.btn):hover,
.example-box a:not(.btn):hover,
.lead-muted a:not(.btn):hover{
  color:#7a271a;
  background:#ffdcc7;
  text-decoration-thickness:3px !important;
}

section .wrap a.important-link{color:#9f1239 !important;background:#ffe4e6 !important;text-decoration:underline !important;text-decoration-thickness:2.5px !important;font-weight:800 !important;padding:2px 5px;border-radius:4px;}
section .wrap a.important-link:hover{color:#881337 !important;background:#fecdd3 !important;}

/* Primary nav: More opens consistently by click/tap/keyboard.
   A flush desktop submenu avoids the non-hoverable gap in the old menu. */
.nav li.more{position:relative;}
.nav .more-toggle{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:none;min-height:34px;padding:4px 0;
  cursor:pointer;font-family:'IBM Plex Mono',monospace;font-size:13px;
  letter-spacing:.03em;color:var(--ink-soft);text-transform:uppercase;
}
.nav .more-toggle:hover,.nav li.more.open > .more-toggle{color:var(--ochre);}
.nav .more-toggle:focus-visible,.nav-toggle:focus-visible{
  outline:2px solid var(--forest);outline-offset:4px;
}
.nav li.more > ul.more-menu{
  display:none;position:absolute;right:0;top:100%;margin:0;
  flex-direction:column;gap:0;min-width:235px;
  padding:10px 18px;background:var(--paper);border:1px solid var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.08);z-index:60;
  max-height:min(70vh,560px);overflow-y:auto;overscroll-behavior:contain;
}
.nav li.more.open > ul.more-menu{display:flex;}
.nav li.more > ul.more-menu a{display:block;padding:7px 0;line-height:1.4;}
@media (max-width:720px){
  .nav > ul.open{
    flex-wrap:nowrap;align-items:flex-start;justify-content:flex-start;
    max-height:calc(100vh - 64px);max-height:calc(100dvh - 64px);
    overflow-x:hidden;overflow-y:auto;
  }
  .nav > ul.open > li{width:100%;}
  .nav li.more{width:100%;}
  .nav .more-toggle{
    display:flex;min-height:42px;width:100%;padding:8px 0;text-align:left;
  }
  .nav li.more > ul.more-menu{
    display:none;position:static;width:100%;min-width:0;max-height:none;
    margin:0 0 8px;padding:2px 0 2px 16px;
    border:none;border-left:2px solid var(--line);
    box-shadow:none;background:transparent;overflow:visible;
  }
  .nav li.more.open > ul.more-menu{display:flex;}
  .nav li.more > ul.more-menu a{padding:10px 0;}
}
.whats-new .specimen h3 a{color:inherit;}
@media (max-width:720px){
  .nav > ul.open{flex-wrap:nowrap;align-items:flex-start;justify-content:flex-start;}
  .nav li.more{width:100%;}
}


/* Video hub — complements the existing editorial field-guide design. */
.nav > ul{column-gap:clamp(10px,1.2vw,17px);}
.video-feature{padding:48px 0 58px;}
.video-feature .section-head{margin-bottom:24px;}
.video-intro{color:var(--ink-soft);max-width:66ch;line-height:1.6;}
.video-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.video-card{background:var(--paper-card);border:1px solid var(--line);min-width:0;overflow:hidden;}
.video-card-image{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--forest-deep);}
.video-card-image img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .18s ease;}
.video-card-image:hover img{transform:scale(1.03);}
.video-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:grid;place-items:center;
  width:60px;height:45px;background:rgba(28,44,32,.90);color:white;border-radius:10px;font-size:22px;padding-left:3px;
  box-shadow:0 6px 18px rgba(0,0,0,.26);}
.video-card-image:hover .video-play{background:var(--ochre);}
.video-card-body{padding:22px 24px 26px;}
.video-card-body .kind{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ochre);}
.video-card-body h3{margin:8px 0;line-height:1.3;}
.video-card-body h3 a{color:var(--forest-deep);}
.video-card-body h3 a:hover{color:var(--ochre);}
.video-card-body p{color:var(--ink-soft);margin:0 0 15px;}
.video-text-link{font-weight:700;text-decoration:underline;text-underline-offset:3px;}
.video-feature-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.video-page-hero{padding:65px 0 54px;border-bottom:1px solid var(--line);}
.video-page-hero .tag{margin-bottom:20px;}
.video-page-hero .lead{max-width:800px;color:var(--ink-soft);font-size:1.2rem;}
.video-library{padding:50px 0 64px;}
.video-library .section-head{margin-bottom:32px;}
.video-lessons{display:flex;flex-direction:column;gap:26px;}
.video-lesson{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:30px;padding:26px;
  background:var(--paper-card);border:1px solid var(--line);scroll-margin-top:110px;}
.video-lesson-media{min-width:0;}
.video-embed{width:100%;aspect-ratio:16/9;background:#1d2a21;overflow:hidden;position:relative;}
.video-embed iframe{width:100%;height:100%;border:0;position:absolute;inset:0;}
.video-fallback{font-size:.89rem;line-height:1.45;color:var(--ink-soft);margin:10px 0 0;}
.video-fallback a{text-decoration:underline;text-underline-offset:3px;}
.video-lesson-copy .tag{margin-bottom:12px;}
.video-lesson-copy h3{font-size:clamp(1.5rem,2.4vw,2rem);}
.video-lesson-copy p{color:var(--ink-soft);}
.video-lesson-copy h4{font-size:1.05rem;margin:22px 0 10px;}
.video-lesson-copy ul{padding-left:22px;color:var(--ink-soft);margin:0 0 20px;}
.video-lesson-copy li{margin:0 0 8px;}
.video-lesson-copy .related-reading{padding-top:15px;border-top:1px dashed var(--line);margin-bottom:0;}
.video-lesson-copy .related-reading a{text-decoration:underline;text-underline-offset:3px;}
.video-page-next{padding:56px 0;}
.video-page-next-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:32px;align-items:start;}
.video-page-next-grid > div:first-child p{max-width:58ch;color:var(--ink-soft);}
.video-page-next-grid .tag{margin-bottom:16px;}
@media (max-width:850px){
 .video-lesson{grid-template-columns:1fr;}
 .video-page-next-grid{grid-template-columns:1fr;}
}
@media (max-width:720px){
 .video-grid{grid-template-columns:1fr;gap:16px;}
 .video-feature,.video-library,.video-page-next{padding:36px 0 44px;}
 .video-page-hero{padding:40px 0 36px;}
 .video-lesson{gap:18px;padding:16px;}
 .video-card-body{padding:18px 20px 22px;}
 .video-play{width:54px;height:42px;}
}
@media (prefers-reduced-motion:reduce){.video-card-image img{transition:none;}}