/* Botswana-Baylor Children's Clinical Centre of Excellence — site styles */
:root{
  --navy:#0d3a63;--navy-deep:#153e80;--teal:#12acc4;--blue:#1d6fae;--blue-mid:#2565a8;
  --ink:#2b2b2b;--body:#4a4a4a;--muted:#8a97a3;--soft:#f4f7f9;--gray:#f2f3f5;
  --shell:1180px;--radius:12px;--radius-lg:16px;--nav-h:108px;
  --ease:cubic-bezier(.25,.46,.45,.94);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:#fff;color:var(--ink);font-family:'Nunito Sans',system-ui,-apple-system,'Segoe UI',sans-serif;font-size:16px;line-height:1.6;text-wrap:pretty}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{font-family:'Poppins',system-ui,sans-serif;margin:0;color:var(--navy);line-height:1.2}
p{margin:0 0 16px}
a{color:var(--blue);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--teal)}
:focus-visible{outline:3px solid var(--teal);outline-offset:2px}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 24px}
.section{padding:clamp(56px,7vw,90px) 0}
.eyebrow{color:var(--teal);font-weight:700;letter-spacing:1.5px;font-size:13px;text-transform:uppercase;margin-bottom:12px}
.section-title{font-size:clamp(24px,3.2vw,32px);font-weight:700;margin:0 0 20px}
.lead{font-size:clamp(15px,1.6vw,16px);line-height:1.75;color:var(--body)}
.skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:#fff;color:var(--navy);padding:12px 18px;border-radius:0 0 8px 0;font-weight:700}
.skip-link:focus{left:0}

/* Buttons */
.btn{display:inline-block;padding:14px 30px;border-radius:8px;font-weight:700;font-size:14px;border:none;cursor:pointer;font-family:inherit;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease)}
.btn--primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(29,111,174,.3)}
.btn--primary:hover{color:#fff;transform:translateY(-3px);box-shadow:0 10px 22px rgba(29,111,174,.45)}
.btn--light{background:#fff;color:var(--blue-mid)}
.btn--light:hover{color:var(--blue-mid);transform:translateY(-3px)}
.btn--pill{padding:13px 30px;border-radius:999px;background:#22252b;color:#fff;font-size:12px;font-weight:600}
.btn--pill:hover{background:var(--teal);color:#fff;transform:scale(1.05)}

/* Nav */
.site-nav{position:fixed;inset:0 0 auto;z-index:40;background:transparent;border-bottom:1px solid rgba(255,255,255,.6);transition:background-color .35s ease,box-shadow .35s ease}
.site-nav.is-solid,.site-nav--solid{background:var(--navy);border-bottom-color:transparent;box-shadow:0 4px 16px rgba(0,0,0,.15)}
.site-nav__inner{width:100%;max-width:1440px;margin:0 auto;padding:22px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.site-nav__logo img{height:64px;width:auto;max-width:60vw}
.site-nav__links{display:flex;gap:clamp(14px,2vw,30px);font-size:13.5px;font-weight:600;letter-spacing:.3px}
.site-nav__links a{color:#bcd6ea;text-transform:uppercase;white-space:nowrap}
.site-nav__links a:hover,.site-nav__links a.is-active{color:#fff}
.site-nav__toggle{display:none;background:none;border:0;padding:8px;cursor:pointer}
.site-nav__toggle span{display:block;width:26px;height:2px;background:#fff;margin:5px 0;transition:transform .3s var(--ease),opacity .3s ease}
.site-nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.site-nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{position:relative;overflow:hidden;min-height:clamp(380px,52vw,560px);display:flex;align-items:center}
.hero__media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease),filter .6s ease}
.hero:hover .hero__media{transform:scale(1.05);filter:brightness(1.06) saturate(1.05)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,20,35,.4),rgba(10,20,35,.6))}
.hero--flat{background:var(--blue-mid)}
.hero--flat::after{background:none}
.hero__inner{position:relative;z-index:2;width:100%;max-width:820px;margin:0 auto;padding:calc(var(--nav-h) + 40px) 24px 48px;text-align:center;color:#fff}
.hero__inner h1{color:#fff;font-size:clamp(28px,4.4vw,46px);font-weight:800;margin:0 0 18px}
.hero__inner p{color:rgba(255,255,255,.92);max-width:600px;margin:0 auto}
.hero__notch{position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);width:120px;height:36px;z-index:3}
.hero--page .hero__inner{padding-block:calc(var(--nav-h) + 46px) 46px}

/* Split section */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:center}
.split img{width:100%;border-radius:var(--radius);transition:transform .5s var(--ease),filter .4s ease}
.split img:hover{transform:scale(1.02);filter:brightness(1.04)}

/* Mission */
.mission{position:relative;background-color:var(--navy);background-image:url("../img/topo-bg.png");background-size:cover;background-position:center;background-repeat:no-repeat;color:#fff;padding:clamp(56px,7vw,90px) 0;isolation:isolate}
.mission::before{content:"";position:absolute;inset:0;background:rgba(13,58,99,.82);z-index:-1}
.mission h2,.mission .eyebrow{color:#fff}
.mission .eyebrow{color:#bfe4f2}
.mission__head{text-align:center;margin-bottom:46px}
.mission__grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(28px,4vw,48px);align-items:center;max-width:1040px;margin:0 auto}
.mission__photos{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mission__photos img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:var(--radius);transition:transform .4s var(--ease),filter .4s ease}
.mission__photos img:hover{transform:scale(1.05);filter:brightness(1.06)}
.accordion{display:flex;flex-direction:column;gap:14px}
.accordion details{background:rgba(255,255,255,.14);border-radius:14px;padding:20px 26px;transition:background-color .3s ease}
.accordion details[open]{background:rgba(255,255,255,.2)}
.accordion summary{cursor:pointer;font-family:'Poppins',sans-serif;font-weight:700;font-size:16px;color:#fff;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{content:"+";font-size:22px;line-height:1;color:#bfe4f2;transition:transform .3s var(--ease)}
.accordion details[open] summary::after{content:"\2013"}
.accordion p{font-size:15px;line-height:1.7;color:#e7f2fa;margin:14px 0 0}

/* Key numbers */
.keynumbers{position:relative;background:var(--soft);padding:clamp(48px,6vw,80px) 0;text-align:center;isolation:isolate;overflow:hidden}
.keynumbers::before{content:"";position:absolute;inset:0;background:url("../img/key-numbers-bg.png") center/cover no-repeat;opacity:.14;z-index:-1}
.keynumbers h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;margin:0 0 32px;letter-spacing:.5px;color:var(--navy)}
.keynumbers img{width:100%;max-width:1000px;height:auto;margin:0 auto;animation:floatSlow 7s ease-in-out infinite}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:var(--gray);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;align-items:center;text-align:center;padding-bottom:32px;transition:transform .3s var(--ease),box-shadow .3s ease}
.card:hover{transform:translateY(-8px);box-shadow:0 16px 32px rgba(13,58,99,.16)}
.card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease),filter .4s ease}
.card:hover img{transform:scale(1.06);filter:brightness(1.05)}
.card h3{font-size:18px;font-weight:700;margin:26px 20px 22px}
.center{text-align:center}
.center .section-title{margin-bottom:0}
.mb-lg{margin-bottom:46px}

/* Divider banner */
.divider-banner img{width:100%;transition:transform .6s var(--ease)}
.divider-banner:hover img{transform:scale(1.012)}

/* Covid */
.narrow{max-width:800px;margin:0 auto;text-align:center}
.narrow img{width:min(340px,80vw);border-radius:18px;box-shadow:0 10px 24px rgba(0,0,0,.15);margin:0 auto 36px;transition:transform .5s var(--ease),box-shadow .4s ease}
.narrow img:hover{transform:scale(1.03) translateY(-4px);box-shadow:0 18px 34px rgba(0,0,0,.22)}

/* Thank you band */
.thanks{background:var(--teal);text-align:center;padding:48px 12px 0;overflow:hidden}
.thanks__rule{width:48px;height:2px;background:#fff;margin:0 auto 14px}
.thanks h2{color:#fff;margin:0 0 12px;line-height:1.15}
.thanks h2 span{display:block;font-size:clamp(24px,4vw,40px);letter-spacing:.5px}
.thanks h2 span:first-child{font-weight:400}
.thanks h2 span:last-child{font-weight:700}
.thanks p{font-family:'Poppins',sans-serif;color:rgba(255,255,255,.9);font-size:clamp(15px,1.8vw,19px);max-width:640px;margin:0 auto 20px}
.thanks__logos{width:100%}

/* Footer */
.site-footer{position:relative;background-image:url("../img/footer-bg.png");background-size:cover;background-position:center;background-repeat:no-repeat;background-color:var(--blue-mid);color:#c9def0;padding:72px 0 28px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;align-items:start}
.footer__logo{width:260px;max-width:100%}
.footer__head{display:flex;align-items:center;gap:12px;margin-bottom:22px;font-weight:700;color:#fff;font-size:16px}
.footer__head::after{content:"";width:40px;height:2px;background:var(--teal)}
.footer__list{display:flex;flex-direction:column;gap:14px;font-size:14.5px}
.footer__list a{color:#c9def0}
.footer__list a:hover{color:#fff}
.footer__icons{display:flex;flex-direction:column;gap:16px}
.footer__icons a,.footer__social a{color:#fff;display:inline-flex;align-items:center;gap:10px;font-size:14.5px;transition:transform .25s var(--ease),opacity .25s ease}
.footer__icons a:hover,.footer__social a:hover{color:#fff;transform:translateY(-2px);opacity:.8}
.footer__social{display:flex;gap:18px;font-size:19px}
.footer__bar{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18);display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.7)}

/* About page */
.doc{display:grid;grid-template-columns:220px 1fr;gap:clamp(28px,4vw,56px);padding-block:clamp(40px,5vw,60px)}
.side-index{position:sticky;top:calc(var(--nav-h) + 16px);display:flex;flex-direction:column;gap:16px;font-size:14px;font-weight:600;border-left:2px solid #e6ecf1;padding-left:18px}
.side-index a{color:#556372}
.side-index a.is-active,.side-index a:hover{color:var(--teal)}
.doc section{padding:clamp(40px,5vw,70px) 0;border-bottom:1px solid #eef1f4}
.doc section:last-child{border-bottom:0}
.quote-card{display:flex;gap:32px;align-items:center;background:var(--soft);border-radius:var(--radius-lg);padding:clamp(24px,3vw,40px);flex-wrap:wrap}
.quote-card img{width:220px;height:150px;object-fit:cover;border-radius:14px;flex:none;transition:transform .4s var(--ease)}
.quote-card img:hover{transform:scale(1.04)}
.quote-card blockquote{font-family:'Poppins',sans-serif;font-weight:600;font-size:clamp(16px,2vw,19px);line-height:1.6;color:var(--navy);margin:0;font-style:italic;flex:1 1 320px}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.duo__item{background:var(--soft);border-radius:var(--radius);padding:24px;display:flex;align-items:center;gap:16px}
.duo__bar{width:4px;height:44px;border-radius:2px;flex:none}
.duo__item h3{font-size:20px;font-weight:800;margin-bottom:4px}
.duo__item p{margin:0;font-size:14.5px;color:#556372}
.sdg{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.sdg__item{border-radius:var(--radius);aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;text-align:center;padding:14px}
.sdg__item strong{font-family:'Poppins',sans-serif;font-weight:800;font-size:26px;margin-bottom:8px}
.sdg__item span{font-size:12.5px;font-weight:600}
.sponsor-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px 32px;list-style:none;margin:0;padding:0}
.sponsor-list li{color:var(--navy);font-weight:600;font-size:14.5px;display:flex;gap:10px;align-items:flex-start}
.sponsor-list li::before{content:"\25BC";color:var(--teal);font-size:11px;line-height:1.7}

/* Programs page */
.program{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px);align-items:center;padding:clamp(36px,5vw,60px) 0;border-bottom:1px solid #eef1f4}
.program:last-child{border-bottom:0}
.program img{width:100%;height:280px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:0 10px 24px rgba(0,0,0,.12);transition:transform .5s var(--ease)}
.program img:hover{transform:scale(1.02)}
.program--flip .program__text{order:2}

/* Testimonials page */
.testimonial{background:var(--soft);border-radius:20px;padding:clamp(28px,4vw,48px);margin-bottom:40px}
.testimonial__mark{font-family:Georgia,serif;font-size:64px;font-weight:800;color:var(--blue-mid);line-height:.4;margin-bottom:22px}
.testimonial p{font-size:17px;line-height:1.85;color:#3a3a3a;white-space:pre-line;margin:0 0 28px}
.testimonial__by{display:flex;align-items:center;gap:14px;padding-top:20px;border-top:1px solid #e2e8ee}
.testimonial__avatar{width:48px;height:48px;border-radius:50%;background:var(--blue-mid);color:#fff;display:flex;align-items:center;justify-content:center;font-family:'Poppins',sans-serif;font-weight:700;flex:none}
.testimonial__by strong{display:block;font-family:'Poppins',sans-serif;color:var(--navy);font-size:15px}
.testimonial__by span{font-size:13px;color:var(--muted)}

/* Genome page */
.genome{position:relative;background:var(--blue-mid);color:#fff;overflow:hidden;padding:calc(var(--nav-h) + 48px) 0 clamp(56px,7vw,90px)}
.genome__grid{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(32px,5vw,64px);align-items:center}
.genome h1{color:#fff;font-size:clamp(26px,3.8vw,38px);font-weight:800;margin:0 0 22px}
.genome p{color:#dbeaf5;line-height:1.8}
.genome .eyebrow{color:#a9e3f0}
.chapters{display:flex;flex-direction:column;gap:16px}
.chapters a{background:#fff;border-radius:14px;padding:22px 26px;box-shadow:0 10px 24px rgba(0,0,0,.15);font-family:'Poppins',sans-serif;font-weight:700;color:var(--navy);font-size:15px;transition:transform .3s var(--ease),box-shadow .3s ease}
.chapters a:hover{transform:translateX(6px);box-shadow:0 14px 30px rgba(0,0,0,.22);color:var(--blue-mid)}
.pullquote{max-width:860px;margin:0 auto;text-align:center}
.pullquote p{font-family:'Poppins',sans-serif;font-style:italic;font-weight:600;font-size:clamp(16px,2.2vw,19px);line-height:1.7;color:var(--navy)}
.pullquote cite{font-size:14px;color:var(--muted);font-weight:600;font-style:normal}

/* Contact page */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(32px,5vw,64px)}
.contact-item{display:flex;gap:18px;align-items:flex-start;margin-bottom:28px}
.contact-item__icon{width:44px;height:44px;border-radius:50%;background:#e8f6fa;color:var(--teal);display:flex;align-items:center;justify-content:center;flex:none}
.contact-item h3{font-size:15px;font-weight:700;margin-bottom:4px}
.contact-item p{margin:0;font-size:14.5px;color:#556372;line-height:1.7}
.form{background:var(--soft);border-radius:20px;padding:clamp(24px,3vw,44px);display:flex;flex-direction:column;gap:18px}
.form input,.form textarea{padding:14px 16px;border:1px solid #dde5ec;border-radius:8px;font-size:14.5px;background:#fff;font-family:inherit;color:var(--ink);width:100%}
.form textarea{resize:vertical;min-height:130px}
.form label{font-size:13px;font-weight:700;color:var(--navy);display:block;margin-bottom:6px}
.form__note{font-size:12.5px;color:var(--muted);margin:0}
.alert{border-radius:8px;padding:14px 16px;font-size:14px;font-weight:600}
.alert--ok{background:#e6f6ec;color:#1c6b3a}
.alert--err{background:#fdeaea;color:#9b2c2c}
.socials{display:flex;gap:12px}
.socials a{width:40px;height:40px;border-radius:50%;background:var(--blue-mid);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;transition:transform .25s var(--ease),background-color .25s ease}
.socials a:hover{background:var(--teal);color:#fff;transform:translateY(-3px)}

/* Reveal + motion */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes floatSlow{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.reveal{opacity:0}
.reveal.is-in{animation:fadeUp .8s var(--ease) both}
.no-js .reveal{opacity:1}

/* Responsive */
@media (max-width:1024px){
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .sdg{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:repeat(2,1fr)}
  .sponsor-list{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  :root{--nav-h:80px}
  .site-nav__inner{padding:16px 20px}
  .site-nav__logo img{height:46px}
  .site-nav__toggle{display:block}
  .site-nav__links{position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;background:var(--navy);padding:8px 20px 20px;display:none}
  .site-nav__links.is-open{display:flex}
  .site-nav__links a{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12)}
  .split,.mission__grid,.program,.genome__grid,.contact-grid,.duo,.doc{grid-template-columns:1fr}
  .program--flip .program__text{order:0}
  .side-index{position:static;flex-direction:row;flex-wrap:wrap;gap:12px 20px;border-left:0;border-bottom:2px solid #e6ecf1;padding:0 0 16px}
  .keynumbers{background-size:cover}
}
@media (max-width:600px){
  .cards{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .sponsor-list{grid-template-columns:1fr}
  .quote-card{flex-direction:column;align-items:flex-start}
  .quote-card img{width:100%;height:200px}
  .program img{height:220px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1}
}