/* ============================================================
   Selous Biotechnology — stylesheet
   Design tokens: clinical teal + calibration amber, tuned for
   diagnostic-instrumentation brand (MAICO authorized dealer).
   ============================================================ */
:root{
  --ink:#0A2A30;
  --teal:#12707E;
  --teal-deep:#0B4C57;
  --teal-pale:#E4F0EF;
  --amber:#E8A33D;
  --amber-deep:#C87F1F;
  --bg:#F5F8F7;
  --surface:#FFFFFF;
  --line:#DCE6E4;
  --muted:#4F6D71;
  --radius:10px;
  --shadow-sm:0 1px 2px rgba(10,42,48,.06),0 1px 1px rgba(10,42,48,.04);
  --shadow-md:0 8px 24px -8px rgba(10,42,48,.18);
  --maxw:1180px;
  --ff-display:'Montserrat',sans-serif;
  --ff-body:'Montserrat',sans-serif;
  --ff-mono:'IBM Plex Mono',monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
body{
  margin:0;
  font-family:var(--ff-body);
  background:var(--bg);
  color:var(--ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--ff-display);line-height:1.12;margin:0 0 .5em;letter-spacing:-.01em}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--amber-deep);outline-offset:3px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{
  font-family:var(--ff-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--teal-deep);
  display:inline-flex;
  align-items:center;
  gap:.5em;
}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--amber);display:inline-block}

.section{padding:88px 0}
.section--tight{padding:56px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:640px;margin-bottom:48px}
.section-head h2{font-size:clamp(1.7rem,3vw,2.4rem)}
.section-head p{color:var(--muted);font-size:1.05rem}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  padding:13px 26px;border-radius:6px;
  font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--teal);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--teal-deep);box-shadow:var(--shadow-md)}
.btn-amber{background:var(--amber);color:var(--ink)}
.btn-amber:hover{background:var(--amber-deep);color:#fff}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:inherit}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber)}
.btn-outline{background:transparent;border-color:var(--teal);color:var(--teal-deep)}
.btn-outline:hover{background:var(--teal-pale)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:rgba(245,248,247,.88);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--ff-display);font-weight:700;font-size:1.15rem;color:var(--ink)}
.brand-mark{width:34px;height:34px;flex:none}
.brand small{display:block;font-family:var(--ff-mono);font-weight:400;font-size:.6rem;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-size:.92rem;font-weight:500;color:var(--muted);position:relative;padding:4px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--amber);transition:width .2s ease}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink)}
.nav-links a[aria-current="page"]::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-phone{font-family:var(--ff-mono);font-size:.85rem;color:var(--teal-deep)}
.nav-toggle{
  display:none;position:relative;z-index:70;flex:none;
  width:44px;height:44px;padding:0;margin-left:auto;
  border:none;border-radius:50%;background:var(--teal-pale);
  cursor:pointer;transition:background .2s ease;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--teal);}
.nav-toggle:hover span{background:#fff;}
.nav-toggle span{
  display:block;position:absolute;left:13px;
  width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .28s ease,opacity .2s ease,top .28s ease,background .2s ease;
}
.nav-toggle span:nth-child(1){top:16px}
.nav-toggle span:nth-child(2){top:22px}
.nav-toggle span:nth-child(3){top:28px}
.nav-toggle[aria-expanded="true"]{background:var(--teal-deep)}
.nav-toggle[aria-expanded="true"] span{background:#fff}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:22px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){top:22px;transform:rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--ink) 0%,var(--teal-deep) 100%);
  color:#fff;
}
.hero .wrap{padding-top:80px;padding-bottom:56px;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.2rem,4.2vw,3.4rem);color:#fff}
.hero h1 em{color:var(--amber);font-style:normal}
.hero-lead{font-size:1.1rem;color:rgba(255,255,255,.78);max-width:46ch}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;margin-top:44px;flex-wrap:wrap}
.hero-stats div strong{display:block;font-family:var(--ff-display);font-size:1.6rem;color:#fff}
.hero-stats div span{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.08em;color:rgba(255,255,255,.6);text-transform:uppercase}

/* signature: animated diagnostic waveform */
.scope{position:relative;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:22px 20px 16px;backdrop-filter:blur(4px)}
.scope-top{display:flex;justify-content:space-between;align-items:center;font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:10px}
.scope-dot{width:8px;height:8px;border-radius:50%;background:var(--amber);display:inline-block;margin-right:6px;box-shadow:0 0 0 0 rgba(232,163,61,.6);animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(232,163,61,.5)}70%{box-shadow:0 0 0 8px rgba(232,163,61,0)}100%{box-shadow:0 0 0 0 rgba(232,163,61,0)}}
.scope svg{width:100%;height:auto;display:block}
.scope-trace{fill:none;stroke:var(--amber);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:900;stroke-dashoffset:900;animation:draw 3.6s ease-in-out infinite}
.scope-trace.trace-b{stroke:#6FD6C9;opacity:.55;animation-delay:.4s}
@keyframes draw{
  0%{stroke-dashoffset:900}
  55%{stroke-dashoffset:0}
  100%{stroke-dashoffset:-900}
}
.scope-grid line{stroke:rgba(255,255,255,.08);stroke-width:1}
.scope-caption{display:flex;justify-content:space-between;margin-top:12px;font-family:var(--ff-mono);font-size:.68rem;color:rgba(255,255,255,.7)}

/* ---------- Marquee / trust bar ---------- */
.trust-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.trust-bar .wrap{display:flex;flex-wrap:wrap;gap:28px 40px;align-items:center;justify-content:space-between;padding-top:20px;padding-bottom:20px}
.trust-item{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--muted);font-weight:500}
.trust-item strong{color:var(--ink)}
.tick{width:16px;height:16px;flex:none;color:var(--teal)}

/* ---------- Category / product grid ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:22px}
.cat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--teal)}
.cat-media{aspect-ratio:4/3;overflow:hidden;background:var(--teal-pale);position:relative}
.cat-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .cat-media img{transform:scale(1.06)}
.cat-code{position:absolute;top:12px;left:12px;background:rgba(10,42,48,.72);color:#fff;font-family:var(--ff-mono);font-size:.66rem;letter-spacing:.1em;padding:4px 8px;border-radius:4px}
.cat-body{padding:20px 20px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.cat-body h3{font-size:1.12rem}
.cat-body p{color:var(--muted);font-size:.92rem;margin-bottom:0;flex:1}
.cat-link{margin-top:10px;font-size:.85rem;font-weight:600;color:var(--teal-deep);display:inline-flex;align-items:center;gap:6px}
.cat-link svg{width:14px;height:14px;transition:transform .2s ease}
.cat-card:hover .cat-link svg{transform:translateX(3px)}

/* ---------- Feature list w/ tick markers ---------- */
.tick-list li{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.tick-list li:last-child{border-bottom:none}
.tick-list svg{width:18px;height:18px;flex:none;color:var(--amber-deep);margin-top:2px}

/* ---------- Two column split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow-md)}
.split.reverse{direction:rtl}
.split.reverse > *{direction:ltr}

/* ---------- Stats strip ---------- */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat-cell{background:var(--surface);padding:28px 20px;text-align:center}
.stat-cell strong{display:block;font-family:var(--ff-display);font-size:2rem;color:var(--teal-deep)}
.stat-cell span{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* ---------- Spec table ---------- */
.spec-block{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:24px 26px;margin-top:18px}
.spec-block h3{font-family:var(--ff-mono);font-size:.75rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-deep);margin:0 0 14px}
.spec-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--line);font-size:.9rem}
.spec-row:last-child{border-bottom:none}
.spec-row span:first-child{color:var(--muted)}
.spec-row span:last-child{font-family:var(--ff-mono)}

/* ---------- Testimonial / quote ---------- */
.quote-block{background:var(--teal-deep);color:#fff;border-radius:var(--radius);padding:44px;position:relative}
.quote-block p{font-family:var(--ff-display);font-size:1.4rem;line-height:1.4;margin-bottom:18px}
.quote-block cite{font-style:normal;font-family:var(--ff-mono);font-size:.78rem;color:var(--amber);letter-spacing:.04em}

/* ---------- CTA band ---------- */
.cta-band{
  background:radial-gradient(circle at 20% 20%,var(--teal) 0%,var(--teal-deep) 60%,var(--ink) 100%);
  color:#fff;border-radius:16px;padding:56px;
  display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2rem);max-width:32ch;margin-bottom:0}

/* ---------- Timeline (about page — genuine chronology) ---------- */
.timeline{border-left:2px solid var(--line);margin-left:8px}
.timeline li{position:relative;padding:0 0 34px 28px}
.timeline li::before{content:"";position:absolute;left:-7px;top:2px;width:12px;height:12px;border-radius:50%;background:var(--amber);border:2px solid var(--bg)}
.timeline .yr{font-family:var(--ff-mono);font-size:.78rem;color:var(--teal-deep);display:block;margin-bottom:4px}
.timeline h3{font-size:1.05rem;margin:0 0 .3em}

/* ---------- Team ---------- */
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:22px}
.team-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.team-photo{aspect-ratio:1/1;overflow:hidden}
.team-photo img{width:100%;height:100%;object-fit:cover}
.team-info{padding:16px 18px}
.team-info h3{font-size:1rem;margin:0 0 2px}
.team-info span{font-family:var(--ff-mono);font-size:.72rem;color:var(--muted)}

/* ---------- Contact page ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px}
.contact-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.contact-card + .contact-card{margin-top:16px}
.contact-card h2{font-family:var(--ff-mono);font-size:.72rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-deep);margin:0 0 8px}
.contact-card a{color:var(--ink);font-weight:600}
.contact-card a:hover{color:var(--teal)}

.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:6px;
  font-family:inherit;font-size:.95rem;background:var(--surface);color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(18,112,126,.14);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:.8rem;color:var(--muted);margin-top:-4px}
.form-status{margin-top:14px;font-size:.9rem;padding:12px 14px;border-radius:6px;display:none}
.form-status.ok{display:block;background:var(--teal-pale);color:var(--teal-deep)}
.form-status.err{display:block;background:#FBE7E1;color:#9A3412}

/* ---------- Map placeholder ---------- */
.map-frame{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{color:rgba(255,255,255,.55);font-size:.9rem;max-width:32ch}
.footer-col h3{font-family:var(--ff-mono);font-size:.72rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.65);margin:0 0 14px}
.footer-col ul li{margin-bottom:10px;font-size:.9rem}
.footer-col a:hover{color:var(--amber)}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem;color:rgba(255,255,255,.7)}

/* ---------- Reveal-on-scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{background:linear-gradient(180deg,var(--ink),var(--teal-deep));color:#fff;padding:64px 0 56px}
.page-hero h1{color:#fff;font-size:clamp(1.9rem,3.6vw,2.8rem)}
.page-hero p{color:rgba(255,255,255,.75);max-width:60ch;font-size:1.05rem}
.breadcrumb{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.75);margin-bottom:14px}
.breadcrumb a{color:rgba(255,255,255,.75)}

/* ---------- Product detail sections ---------- */
.product-section{padding:72px 0;border-bottom:1px solid var(--line)}
.product-section:last-of-type{border-bottom:none}
.product-section .split{align-items:start}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.pill{font-family:var(--ff-mono);font-size:.72rem;padding:6px 12px;border-radius:20px;background:var(--teal-pale);color:var(--teal-deep);border:1px solid rgba(18,112,126,.18)}

/* ---------- Responsive ---------- */
@media (max-width:920px){
  .hero .wrap{grid-template-columns:1fr;padding-top:48px}
  .split{grid-template-columns:1fr}
  .split.reverse{direction:ltr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-strip{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .brand-mark{width:26px;height:26px}
  .brand{font-size:1rem;gap:8px}
  .brand small{font-size:.54rem}
  .nav-cta{display:none}
  .nav-toggle{display:flex}

  .nav-links{
    position:fixed;inset:0;z-index:60;
    background:rgba(10,42,48,.9);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    flex-direction:column;align-items:center;justify-content:center;
    padding:32px;gap:8px;
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .32s ease,visibility 0s linear .32s;
  }
  .nav-links.open{
    opacity:1;visibility:visible;pointer-events:auto;
    transition:opacity .32s ease;
  }
  .nav-links li{width:100%;max-width:320px;text-align:center}
  .nav-links a{
    display:block;padding:16px 0;font-size:1.35rem;font-weight:600;
    color:#fff;font-family:var(--ff-display);
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .nav-links a[aria-current="page"],.nav-links a:hover{color:var(--amber)}
  .nav-links a[aria-current="page"]::after,.nav-links a::after{display:none}
  .nav-links li:last-child a{border-bottom:none}

  .cta-band{flex-direction:column;text-align:center;padding:40px 28px}
  .form-row{grid-template-columns:1fr}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .stats-strip{grid-template-columns:1fr}
  .quote-block{padding:28px}
  .section{padding:64px 0}
}