/* ============================================================
   CORE D3 — Design Tokens
   Subject: vitamin D deficiency at the equator. The signature
   device is "the equator line" — a thin gold rule with a 0°
   marker that recurs as a section divider throughout the site,
   echoing the actual line that runs through Kenya.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  --ink:#16213E;        /* equatorial night — headers, footer, deep sections */
  --ink-soft:#26365c;
  --sun:#E8A33D;         /* sun gold — primary accent, from the pack */
  --sun-deep:#C97A2B;    /* hover / pressed */
  --mist:#EEF1EA;        /* pale sage base — not cream, not stark white */
  --paper:#FFFFFF;
  --teal:#2C7A7B;        /* clinical / evidence accent */
  --teal-soft:#e4f0ef;
  --text:#191914;
  --text-soft:#54544c;
  --line:#d9ddcf;
  --radius:2px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--mist);
  color:var(--text);
  font-family:'Inter',sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{
  font-family:'Fraunces',serif;
  font-weight:600;
  line-height:1.08;
  letter-spacing:-0.01em;
  color:var(--ink);
  margin:0 0 .5em;
}
h1{font-size:clamp(2.1rem,5vw,3.4rem); font-optical-sizing:auto;}
h2{font-size:clamp(1.5rem,3vw,2.2rem);}
h3{font-size:1.15rem;}
p{margin:0 0 1em; color:var(--text-soft); max-width:64ch;}
a{color:var(--teal);}
.mono{font-family:'IBM Plex Mono',monospace; letter-spacing:.02em;}
img{max-width:100%; display:block;}

.wrap{max-width:1080px; margin:0 auto; padding:0 24px;}
.section{padding:64px 0;}
.section--tight{padding:40px 0;}
.section--ink{background:var(--ink); color:#fff;}
.section--ink h1,.section--ink h2,.section--ink h3{color:#fff;}
.section--ink p{color:#c9cedd;}
.section--paper{background:var(--paper);}

/* --- equator line: the signature device --- */
.equator{
  position:relative;
  display:flex; align-items:center; gap:14px;
  margin:36px 0;
}
.equator::before,.equator::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--sun),transparent);}
.equator span{
  font-family:'IBM Plex Mono',monospace;
  font-size:.72rem; font-weight:600; letter-spacing:.12em;
  color:var(--sun-deep); background:var(--paper);
  border:1px solid var(--sun); border-radius:999px;
  padding:4px 12px; white-space:nowrap;
}
.section--ink .equator span{background:var(--ink); color:var(--sun);}

/* --- nav --- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(22,33,62,.97); backdrop-filter:blur(6px);
  border-bottom:1px solid rgba(232,163,61,.25);
}
.nav{display:flex; align-items:center; justify-content:space-between; padding:16px 24px; max-width:1080px; margin:0 auto;}
.brand{display:flex; align-items:center; gap:10px; color:#fff; text-decoration:none; font-family:'Fraunces',serif; font-weight:700; font-size:1.2rem;}
.brand .dot{width:9px;height:9px;border-radius:50%; background:var(--sun);}
.navlinks{display:flex; gap:26px; align-items:center; list-style:none; margin:0; padding:0;}
.navlinks a{color:#dfe3ee; text-decoration:none; font-size:.92rem; font-weight:500;}
.navlinks a:hover{color:var(--sun);}
.navlinks .cta{background:var(--sun); color:var(--ink); padding:9px 18px; border-radius:999px; font-weight:600;}
.navlinks .cta:hover{background:#fff; color:var(--ink);}
.has-dropdown{position:relative;}
.submenu-toggle{display:none;}
.dropdown{
  display:none; position:absolute; top:130%; left:0; min-width:260px;
  background:var(--paper); border:1px solid var(--line); border-radius:6px; padding:8px;
  box-shadow:0 12px 28px rgba(0,0,0,.18);
}
.has-dropdown:hover .dropdown{display:block;}
.dropdown a{display:block; color:var(--text); padding:9px 12px; border-radius:4px; font-size:.88rem;}
.dropdown a:hover{background:var(--teal-soft); color:var(--teal);}
.mobile-toggle{display:none;}

/* --- breadcrumb --- */
.crumb{font-family:'IBM Plex Mono',monospace; font-size:.75rem; color:var(--text-soft); padding:18px 0 0;}
.crumb a{color:var(--text-soft); text-decoration:none;}
.crumb a:hover{color:var(--teal);}

/* --- hero --- */
.hero{padding:70px 0 50px;}
.eyebrow{font-family:'IBM Plex Mono',monospace; font-size:.75rem; letter-spacing:.14em; text-transform:uppercase; color:var(--sun-deep); margin-bottom:14px; display:inline-block;}
.section--ink .eyebrow{color:var(--sun);}
.hero-actions{display:flex; gap:14px; flex-wrap:wrap; margin-top:24px;}
.btn{
  display:inline-block; padding:13px 26px; border-radius:999px; text-decoration:none;
  font-weight:600; font-size:.94rem; border:1px solid transparent; transition:all .15s ease;
  cursor:pointer;
}
.btn--primary{background:var(--ink); color:#fff;}
.btn--primary:hover{background:var(--sun); color:var(--ink);}
.btn--ghost{border-color:var(--ink); color:var(--ink);}
.btn--ghost:hover{background:var(--ink); color:#fff;}
.section--ink .btn--ghost{border-color:var(--sun); color:var(--sun);}
.section--ink .btn--ghost:hover{background:var(--sun); color:var(--ink);}

/* --- stat / data cards (uses mono type, ties to "evidence") --- */
.stats{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:1px; background:var(--line); border:1px solid var(--line); margin:32px 0;}
.stat{background:var(--paper); padding:26px 22px;}
.stat .num{font-family:'IBM Plex Mono',monospace; font-size:2.1rem; font-weight:600; color:var(--teal);}
.stat .label{font-weight:600; margin:6px 0 4px; color:var(--ink);}
.stat .src{font-size:.78rem; color:var(--text-soft);}
.stat .src a{color:var(--teal);}

/* --- cards / grid --- */
.grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:22px; margin:28px 0;}
.card{background:var(--paper); border:1px solid var(--line); border-radius:6px; padding:24px;}
.card h3{margin-bottom:8px;}
.card .n{font-family:'IBM Plex Mono',monospace; color:var(--sun-deep); font-size:.8rem; font-weight:600;}
.card a.card-link{text-decoration:none; color:inherit; display:block;}
.card a.card-link:hover{border-color:var(--sun);}
.card a.card-link:hover h3{color:var(--teal);}

/* --- learn hub tiles --- */
.learn-tile{
  background:var(--paper); border:1px solid var(--line); border-radius:6px;
  padding:26px; text-decoration:none; display:block; transition:border-color .15s;
}
.learn-tile:hover{border-color:var(--sun);}
.learn-tile .tag{font-family:'IBM Plex Mono',monospace; font-size:.72rem; color:var(--teal); letter-spacing:.06em;}
.learn-tile h3{color:var(--ink); margin:8px 0 6px;}
.learn-tile p{margin:0; font-size:.92rem;}

/* --- callout / disclaimer --- */
.callout{background:var(--teal-soft); border-left:3px solid var(--teal); padding:16px 20px; border-radius:4px; margin:22px 0;}
.callout p{margin:0; color:var(--ink);}

/* --- coordinates table --- */
.coords{width:100%; border-collapse:collapse; margin:24px 0;}
.coords td{padding:12px 10px; border-bottom:1px solid var(--line); font-size:.94rem;}
.coords td:first-child{font-family:'IBM Plex Mono',monospace; color:var(--teal); font-weight:600; width:110px;}

/* --- FAQ --- */
.faq-item{border-bottom:1px solid var(--line); padding:20px 0;}
.faq-item h3{margin-bottom:8px; font-size:1.05rem;}

/* --- product spec table --- */
.spec{width:100%; border-collapse:collapse; margin:20px 0;}
.spec td{padding:12px 0; border-bottom:1px solid var(--line);}
.spec td:first-child{color:var(--text-soft); width:40%;}
.spec td:last-child{font-weight:600; color:var(--ink);}

/* --- product shot --- */
.shot{border-radius:6px; overflow:hidden; border:1px solid var(--line);}

/* --- contact form --- */
.form-field{margin-bottom:18px;}
.form-field label{display:block; font-weight:600; color:var(--ink); font-size:.9rem; margin-bottom:6px;}
.form-field input,.form-field select,.form-field textarea{
  width:100%; padding:11px 13px; border:1px solid var(--line); border-radius:6px;
  font-family:'Inter',sans-serif; font-size:.95rem; color:var(--text); background:var(--paper);
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none; border-color:var(--teal); box-shadow:0 0 0 3px var(--teal-soft);
}
.form-field textarea{resize:vertical; min-height:100px;}

/* --- footer --- */
footer.site{background:var(--ink); color:#c9cedd; padding:56px 0 28px;}
.footgrid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px;}
.footgrid h4{color:#fff; font-size:.82rem; letter-spacing:.08em; text-transform:uppercase; font-family:'IBM Plex Mono',monospace; margin:0 0 14px;}
.footgrid ul{list-style:none; margin:0; padding:0;}
.footgrid li{margin-bottom:9px;}
.footgrid a{color:#c9cedd; text-decoration:none; font-size:.9rem;}
.footgrid a:hover{color:var(--sun);}
.footbottom{border-top:1px solid rgba(255,255,255,.12); margin-top:40px; padding-top:22px; font-size:.78rem; color:#8a90a6;}

@media (max-width:820px){
  .navlinks{
    position:fixed; inset:0 0 0 0; z-index:200;
    background:var(--ink); flex-direction:column; align-items:stretch;
    padding:88px 24px 32px; display:none; gap:0;
    overflow-y:auto; -webkit-overflow-scrolling:touch;
  }
  .navlinks.open{display:flex;}
  .navlinks a{width:100%; padding:15px 0; border-bottom:1px solid rgba(255,255,255,.08); font-size:1.05rem;}
  .navlinks .cta{width:100%; text-align:center; margin-top:18px; padding:14px 18px;}
  body.nav-open{overflow:hidden;}

  /* "Learn" becomes a tap-to-expand accordion on mobile instead of an
     always-open submenu, so the panel doesn't read as one long cluttered list */
  .has-dropdown{display:flex; flex-direction:column;}
  .has-dropdown > a{display:flex; justify-content:space-between; align-items:center;}
  .submenu-toggle{
    display:inline-flex; align-items:center; justify-content:center;
    width:28px; height:28px; border:1px solid rgba(255,255,255,.25); border-radius:50%;
    font-size:1rem; color:var(--sun); flex-shrink:0;
  }
  .submenu-toggle::before{content:"+";}
  .has-dropdown.sub-open .submenu-toggle::before{content:"\2212";}
  .has-dropdown .dropdown{
    position:static; display:none; box-shadow:none; border:none;
    background:transparent; padding:0 0 8px 14px; min-width:0;
  }
  .has-dropdown.sub-open .dropdown{display:block;}
  .dropdown a{padding:11px 0; font-size:.95rem; color:#dfe3ee;}
  .dropdown a:hover{background:transparent; color:var(--sun);}

  .mobile-toggle{
    display:block; position:relative; z-index:210;
    background:none; border:1px solid var(--sun); color:var(--sun);
    border-radius:6px; padding:8px 12px; font-size:1rem;
  }
  .footgrid{grid-template-columns:1fr 1fr;}
}