@import url('https://fonts.googleapis.com/css2?family=Jost:wght@300;400;500;600;700&display=swap');
/* ============================================================
   Spectra Analytical Lab — design system
   Home = data-theme="hybrid" (light/airy) | Subpages = data-theme="sleek" (dark/glass)
   ============================================================ */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
:root{
  --accent:#86cc21;--accent-dark:#6ba81a;
  /* defaults (hybrid / light) */
  --bg:#ffffff;--bg-alt:#f4f7f1;--text:#17201b;--muted:#586159;
  --card-bg:#ffffff;--card-border:#e8ece3;--card-blur:0px;--card-radius:18px;--card-shadow:0 16px 44px rgba(18,40,24,.10);
  --nav-bg:#ffffff;--nav-text:#17201b;--role:var(--accent-dark);
  --input-bg:#ffffff;--input-border:#d8ddd0;
  --hero-text:#ffffff;--hero-accent:#86cc21;
  --max:1150px;
}
body{font-family:'Jost',"Segoe UI",Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.65}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
[id]{scroll-margin-top:110px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.narrow{max-width:820px}

/* ================= NAV ================= */
.nav{background:var(--nav-bg);border-bottom:1px solid var(--card-border);position:sticky;top:0;z-index:100;transition:.3s}
.nav .row{display:flex;align-items:center;justify-content:space-between;padding:12px 22px;max-width:var(--max);margin:0 auto;gap:16px}
.brand img{height:50px}
.logo-dark{display:none}
.menu-toggle{display:none;background:none;border:0;font-size:1.6rem;cursor:pointer;color:var(--nav-text)}
.nav ul{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:2px 4px;list-style:none;align-items:center}
.nav ul>li{position:relative}
.nav a{display:block;padding:9px 11px;font-size:.82rem;text-transform:uppercase;letter-spacing:.02em;font-weight:600;color:var(--nav-text);border-radius:8px}
.nav a:hover{color:var(--accent)}
.dropdown{position:absolute;top:100%;left:0;min-width:220px;background:var(--nav-bg);border:1px solid var(--card-border);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.18);padding:6px;display:none;list-style:none;margin-top:0}
.has-dd.open>.dropdown{display:block}
.dropdown a{text-transform:none;font-weight:500;font-size:.9rem;letter-spacing:0}

/* ================= HERO SLIDESHOW (home) ================= */
.hero{position:relative;height:600px;overflow:hidden;background:#0d1512}
.hero .bg{position:absolute;inset:0;background:url('assets/hero.jpg') center 45%/cover;transform:scale(1.05);animation:kb 20s ease-in-out infinite alternate}
@keyframes kb{to{transform:scale(1.14)}}
.slides{position:absolute;inset:0;z-index:3}
.slide{position:absolute;inset:0;display:flex;align-items:center;opacity:0;transform:translateX(70px);transition:opacity .9s ease,transform .9s ease;pointer-events:none}
.slide.active{opacity:1;transform:translateX(0);pointer-events:auto}
.slide.exit{opacity:0;transform:translateX(-70px)}
.slide .inner{padding:0 22px;max-width:var(--max);margin:0 auto;width:100%;text-shadow:0 2px 18px rgba(0,0,0,.55)}
.slide h1{font-size:4rem;font-weight:300;letter-spacing:1px;color:var(--hero-text);line-height:1.04}
.slide h1 .accent{color:var(--hero-accent);font-weight:500}
.slide p{color:var(--hero-text);opacity:.94;font-size:1.2rem;margin:16px 0 28px;max-width:540px;font-weight:300}
.hero-btn{display:inline-flex;align-items:center;gap:12px;background:var(--accent);color:#0d1512;padding:14px 30px;border-radius:30px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;font-size:.8rem;transition:.2s}
.hero-btn:hover{background:#fff;transform:translateY(-2px)}
.hero-btn .ln{width:26px;height:1px;background:currentColor;display:inline-block}
.dots{position:absolute;bottom:28px;left:0;right:0;z-index:4;display:flex;gap:9px;justify-content:center}
.dot{width:34px;height:4px;border-radius:3px;background:rgba(255,255,255,.4);cursor:pointer;border:0;transition:.3s}
.dot.active{background:var(--accent);width:48px}
@media(max-width:720px){.hero{height:500px}.slide h1{font-size:2.5rem}}

/* ================= PAGE BANNER (subpages) ================= */
.banner{position:relative;height:320px;overflow:hidden;background:#0d1512;display:flex;align-items:center}
.banner .bg{position:absolute;inset:0;background:url('assets/hero.jpg') center 45%/cover;transform:scale(1.05);animation:kb 20s ease-in-out infinite alternate}
.banner .inner{position:relative;z-index:2;max-width:var(--max);margin:0 auto;padding:0 22px;width:100%;text-shadow:0 2px 16px rgba(0,0,0,.6)}
.banner h1{font-size:3.1rem;font-weight:300;letter-spacing:1px;color:#fff}
.banner h1 .accent{color:var(--accent);font-weight:500}
.banner .crumb{color:#fff;opacity:.85;font-size:.9rem;margin-top:6px}
@media(max-width:720px){.banner{height:250px}.banner h1{font-size:2.1rem}}

/* ================= SECTIONS ================= */
.section{padding:72px 0}
.section.soft{background:var(--bg-alt)}
.head{text-align:center;max-width:660px;margin:0 auto 48px}
.head span{color:var(--role);font-weight:600;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem}
.head h2{font-size:2.3rem;font-weight:400;margin:8px 0 10px}
.head p{color:var(--muted)}
.kicker{display:flex;align-items:center;gap:16px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;margin-bottom:12px}
.kicker::before{content:"";width:56px;height:2px;background:currentColor}

/* prose */
.prose h2{font-size:1.9rem;font-weight:400;margin:0 0 14px}
.prose h3{font-size:1.25rem;font-weight:500;margin:26px 0 8px}
.prose p{margin-bottom:16px;color:var(--text)}
.prose ul{padding-left:22px;margin-bottom:16px;color:var(--text)}
.prose li{margin:5px 0}
.hr{border:0;border-top:1px solid var(--card-border);margin:44px 0}
.tag-list{display:flex;flex-wrap:wrap;gap:9px;list-style:none;padding:0;margin:14px 0}
.tag-list li{background:var(--bg-alt);border:1px solid var(--card-border);border-radius:30px;padding:7px 15px;font-size:.85rem;margin:0}

/* ================= CARDS ================= */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--card-radius);padding:28px;box-shadow:var(--card-shadow);backdrop-filter:blur(var(--card-blur));-webkit-backdrop-filter:blur(var(--card-blur));transition:transform .2s,box-shadow .2s}
a.card:hover{transform:translateY(-6px)}
.card .ico{width:54px;height:54px;border-radius:12px;background:rgba(134,204,33,.15);color:var(--accent-dark);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:16px}
.card h3{font-size:1.2rem;font-weight:500;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem}
@media(max-width:720px){.cards,.cards.two{grid-template-columns:1fr}}

/* ================= STATS ================= */
.stats{padding:46px 0;background:radial-gradient(circle at 80% 20%,rgba(134,204,33,.28),transparent 55%),linear-gradient(120deg,#0f2417,#1c3a26)}
.stats .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat .n{font-size:2.7rem;font-weight:600;color:var(--accent)}
.stat .l{color:#c7d3c2;font-size:.86rem;text-transform:uppercase;letter-spacing:.05em}
@media(max-width:720px){.stats .grid{grid-template-columns:repeat(2,1fr);gap:28px 20px}}

/* ================= TEAM ================= */
.team{display:flex;flex-wrap:wrap;justify-content:center;gap:56px 46px;max-width:1080px;margin:0 auto}
.tmember{width:300px;text-align:center}
.tmember img{width:158px;height:158px;border-radius:50%;object-fit:cover;object-position:center top;margin:0 auto 20px;filter:grayscale(1)}
.tmember h3{font-size:1.02rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.tmember .role{color:var(--muted);font-weight:400;font-size:.95rem;margin:3px 0 16px}
.tmember p{color:var(--muted);font-size:.9rem;text-align:center}
@media(max-width:720px){.tmember{width:100%}}

/* ================= FAQ ================= */
.faq-item{border:1px solid var(--card-border);border-radius:14px;margin-bottom:14px;overflow:hidden;background:var(--card-bg);backdrop-filter:blur(var(--card-blur));-webkit-backdrop-filter:blur(var(--card-blur))}
.faq-item summary{cursor:pointer;padding:20px 24px;font-weight:600;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--accent);font-size:1.5rem;line-height:1}
.faq-item[open] summary::after{content:"\2013"}
.faq-item .body{padding:0 24px 22px;color:var(--muted)}

/* ================= CONTACT ================= */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.contact-info .label{font-weight:600;color:var(--text);margin-top:18px;text-transform:uppercase;letter-spacing:.05em;font-size:.8rem}
.contact-info p{color:var(--muted);margin:2px 0}
form label{display:block;font-weight:600;margin:14px 0 6px;font-size:.88rem}
form input,form textarea{width:100%;padding:13px;border:1px solid var(--input-border);border-radius:10px;font-family:inherit;font-size:1rem;background:var(--input-bg);color:var(--text)}
form textarea{min-height:140px;resize:vertical}
.map{border:0;width:100%;height:290px;border-radius:16px;margin-top:22px}
.btn{display:inline-block;background:var(--accent);color:#0d1512;padding:14px 30px;border-radius:30px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;font-size:.82rem;border:0;cursor:pointer;transition:.2s}
.btn:hover{background:var(--accent-dark);color:#fff}

/* ================= CTA ================= */
.cta{background:radial-gradient(circle at 80% 20%,rgba(134,204,33,.35),transparent 55%),linear-gradient(120deg,#0f2417,#1c3a26);color:#fff;text-align:center;padding:66px 22px}
.cta h2{font-size:2rem;font-weight:400;margin-bottom:12px}
.cta p{opacity:.9;margin-bottom:24px}
.cta .btn{background:#fff;color:var(--accent-dark)}
.cta .btn:hover{background:#0d1512;color:#fff}

/* ================= FOOTER ================= */
.foot{background:#101613;color:#aab4a8;padding:54px 0 26px;font-size:.92rem}
.foot .grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;margin-bottom:30px}
.foot h4{color:#fff;margin-bottom:14px;font-size:1rem;font-weight:500}
.foot ul{list-style:none}
.foot li{margin:7px 0}
.foot a:hover{color:var(--accent)}
.foot-accred{display:flex;justify-content:flex-end;margin-bottom:26px}
.foot-accred img{background:#fff;border-radius:10px;padding:12px 16px;max-width:320px;width:100%}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#8f998f;font-size:.85rem}
@media(max-width:720px){.foot .grid{grid-template-columns:1fr}.foot-accred{justify-content:center}}

/* ================= THEME: SLEEK / GLASS (subpages) ================= */
body[data-theme="sleek"]{--bg:#0e1512;--bg-alt:#121b16;--text:#eaf1e7;--muted:#9fb09b;
  --card-bg:rgba(255,255,255,.055);--card-border:rgba(255,255,255,.13);--card-blur:14px;--card-shadow:0 10px 40px rgba(0,0,0,.45);
  --nav-bg:rgba(14,21,18,.9);--nav-text:#eaf1e7;--role:#9ada4b;
  --input-bg:rgba(255,255,255,.06);--input-border:rgba(255,255,255,.2)}
body[data-theme="sleek"] .nav{backdrop-filter:blur(12px)}
body[data-theme="sleek"] .logo-light{display:none}
body[data-theme="sleek"] .logo-dark{display:block}
body[data-theme="sleek"] .tag-list li{background:rgba(255,255,255,.06)}

/* ================= MOBILE NAV ================= */
@media(max-width:900px){
  .menu-toggle{display:block}
  .nav ul{display:none;position:absolute;top:100%;left:0;right:0;background:var(--nav-bg);flex-direction:column;align-items:stretch;padding:10px 16px;border-bottom:1px solid var(--card-border)}
  .nav ul.open{display:flex}
  .dropdown{position:static;display:block;box-shadow:none;border:0;padding-left:14px;margin:0;background:transparent}
  .contact-grid{grid-template-columns:1fr}
}

/* ================= CERTIFICATES & BADGES ================= */
.cert-doc{max-width:900px;margin:0 auto}
.cert-doc img{width:100%;display:block;margin:0 auto 22px;border-radius:8px;box-shadow:0 10px 30px rgba(0,0,0,.35);background:#fff}
.badges-wrap{max-width:1040px;margin:26px auto 0}
.badges-wrap img{width:100%;display:block;border-radius:8px}