/* ============ Concept Electronics — modern single-page ============ */
:root{
  --green:#2fbf87;      /* brand green */
  --green-soft:#38d69a;
  --coral:#ef5b43;      /* brand coral */
  --coral-soft:#ff7a63;
  --bg:#080b11;         /* near-black */
  --bg-2:#0c1119;
  --panel:#10161f;
  --panel-2:#141c27;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text:#eaf0f6;
  --muted:#9aa7b6;
  --muted-2:#6d7c8c;
  --radius:16px;
  --maxw:1180px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative;
}
h1,h2,h3,.brand-text{font-family:'Space Grotesk','Inter',sans-serif;line-height:1.1;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- ambient background ---------- */
.bg-mesh{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(60vw 60vw at 80% -10%,rgba(47,191,135,.16),transparent 60%),
    radial-gradient(50vw 50vw at 5% 15%,rgba(239,91,67,.13),transparent 60%),
    radial-gradient(40vw 40vw at 60% 90%,rgba(47,191,135,.10),transparent 60%),
    var(--bg);
  animation:float 22s var(--ease) infinite alternate;
}
@keyframes float{to{transform:translate3d(0,-3%,0) scale(1.05)}}
.bg-grid{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;transition:.35s var(--ease);
  border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(8,11,17,.72);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:120px;gap:20px}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{height:104px;width:auto;display:block}
.nav{display:flex;gap:28px}
.nav a{font-size:14px;color:var(--muted);font-weight:500;transition:.2s;position:relative}
.nav a:hover{color:var(--text)}
.nav a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--green);transition:.25s var(--ease)}
.nav a:hover::after{width:100%}
.header-actions{display:flex;align-items:center;gap:14px}

/* ---------- language selector ---------- */
.lang{position:relative}
.lang-btn{display:flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--line-strong);
  color:var(--text);padding:8px 12px;border-radius:10px;font-size:13px;font-weight:600;cursor:pointer;transition:.2s}
.lang-btn:hover{border-color:var(--green)}
.lang-globe{color:var(--green)}
.chev{font-size:10px;color:var(--muted)}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);background:var(--panel-2);border:1px solid var(--line-strong);
  border-radius:12px;padding:6px;display:none;min-width:140px;box-shadow:0 20px 40px rgba(0,0,0,.5)}
.lang-menu.open{display:block;animation:pop .18s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
.lang-menu button{display:block;width:100%;text-align:left;background:none;border:none;color:var(--muted);
  padding:9px 12px;border-radius:8px;font-size:14px;cursor:pointer;transition:.15s}
.lang-menu button:hover,.lang-menu button.active{background:var(--panel);color:var(--text)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;
  padding:14px 26px;border-radius:12px;cursor:pointer;border:1px solid transparent;transition:.25s var(--ease);white-space:nowrap}
.btn-sm{padding:9px 16px;font-size:13px}
.btn-full{width:100%}
.btn-solid{background:linear-gradient(135deg,var(--green),var(--green-soft));color:#04140d;box-shadow:0 8px 30px rgba(47,191,135,.25)}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(47,191,135,.4)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--green);background:rgba(47,191,135,.08)}

/* ---------- hero ---------- */
.hero{padding:clamp(70px,12vw,150px) 0 70px;text-align:center}
.hero-inner{display:flex;flex-direction:column;align-items:center;max-width:900px}
.eyebrow{text-transform:uppercase;letter-spacing:.24em;font-size:12px;font-weight:600;color:var(--green);margin-bottom:22px}
.hero-title{font-size:clamp(38px,6vw,68px);font-weight:700;
  background:linear-gradient(180deg,#fff,#b9c6d3);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(16px,2.2vw,20px);color:var(--muted);margin:26px 0 34px;max-width:680px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.trust-tags{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:40px}
.trust-tags span{font-size:12.5px;color:var(--muted-2);border:1px solid var(--line);padding:7px 14px;border-radius:100px;background:rgba(255,255,255,.02)}

/* ---------- stats ---------- */
.stats{padding:26px 0 40px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:linear-gradient(180deg,var(--panel),transparent);border:1px solid var(--line);
  border-radius:var(--radius);padding:28px 22px;text-align:center}
.stat-num{display:block;font-family:'Space Grotesk';font-size:clamp(34px,4.5vw,50px);font-weight:700;color:var(--green);line-height:1}
.stat-label{display:block;margin-top:8px;font-size:13.5px;color:var(--muted)}
.stat-link{text-decoration:none;transition:.3s var(--ease);cursor:pointer}
.stat-link:hover{transform:translateY(-4px);border-color:var(--green)}
.stat-cta{display:block;margin-top:10px;font-size:12px;font-weight:600;color:var(--coral-soft)}

/* ---------- sections ---------- */
.section{padding:clamp(70px,9vw,120px) 0}
.section-alt{background:linear-gradient(180deg,transparent,var(--bg-2),transparent)}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.kicker{text-transform:uppercase;letter-spacing:.2em;font-size:12px;font-weight:600;color:var(--coral)}
.section-head h2{font-size:clamp(28px,4vw,42px);margin:16px 0 0;font-weight:700}
.section-lead{color:var(--muted);margin-top:18px;font-size:17px}

/* ---------- certified scope ---------- */
.cap-scope{margin:30px auto 0;max-width:820px;text-align:center;color:var(--muted);font-size:14.5px;
  line-height:1.7;padding:22px 26px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02)}
.cap-scope-label{display:block;text-transform:uppercase;letter-spacing:.16em;font-size:11px;font-weight:600;
  color:var(--coral);margin-bottom:10px}

/* ---------- partner grid ---------- */
.partner-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px}
.partner-tile{display:flex;flex-direction:column;align-items:center;gap:12px;background:var(--panel);
  border:1px solid var(--line);border-radius:14px;padding:22px 16px;transition:.3s var(--ease)}
.partner-tile:hover{transform:translateY(-4px);border-color:var(--green);background:var(--panel-2)}
.partner-chip{width:56px;height:56px;border-radius:12px;background:#fff;display:grid;place-items:center;padding:9px;box-shadow:0 6px 18px rgba(0,0,0,.35)}
.partner-chip img{max-width:100%;max-height:100%;object-fit:contain;display:block}
.partner-tile span:last-child{font-size:13.5px;font-weight:600;color:var(--muted);text-align:center}
.partner-tile:hover span:last-child{color:var(--text)}

/* ---------- capabilities ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s var(--ease)}
.cap-card:hover{transform:translateY(-4px);border-color:var(--green);background:var(--panel-2)}
.cap-no{font-family:'Space Grotesk';font-size:13px;font-weight:700;color:var(--coral);letter-spacing:.1em}
.cap-card h3{font-size:19px;margin:12px 0 10px}
.cap-card p{color:var(--muted);font-size:14.5px}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:50px;align-items:center}
.about-text h2{margin:16px 0 22px;font-size:clamp(26px,3.4vw,38px)}
.about-text p{color:var(--muted);margin-bottom:16px;font-size:16px}
.certs{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.cert-badge{display:flex;flex-direction:column;gap:2px;padding:12px 16px;border-radius:10px;
  background:rgba(47,191,135,.08);border:1px solid rgba(47,191,135,.25)}
.cert-badge b{font-size:14px;font-weight:700;color:var(--green-soft)}
.cert-badge em{font-size:11px;font-style:normal;color:var(--muted);font-weight:500}
.cert-nr{font-size:10.5px;color:var(--muted-2);font-family:'Space Grotesk';letter-spacing:.02em;margin-top:2px}
.cert-note{margin-top:16px;font-size:12.5px;color:var(--muted-2)}
.about-side{display:flex;flex-direction:column;gap:2px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:10px 26px}
.fact{display:flex;justify-content:space-between;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);gap:12px}
.fact:last-child{border-bottom:none}
.fact-k{color:var(--muted-2);font-size:14px}
.fact-v{font-family:'Space Grotesk';font-weight:600;text-align:right}

/* ---------- about projects button ---------- */
.about-projects{margin-top:28px}

/* ---------- contact ---------- */
.contact-block{max-width:640px;margin:0 auto;text-align:center;background:var(--panel);
  border:1px solid var(--line);border-radius:20px;padding:48px 40px;display:flex;flex-direction:column;align-items:center;gap:16px}
.contact-email{font-family:'Space Grotesk';font-size:clamp(22px,3vw,30px);font-weight:600;color:var(--green-soft);transition:.2s}
.contact-email:hover{color:var(--green)}
.contact-address{color:var(--muted);font-size:15px;max-width:440px}
.contact-legal{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted-2);line-height:1.7}
.contact-block .btn{margin-top:12px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:44px 0;margin-top:20px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.footer-logo{height:112px;width:auto;display:block;margin-bottom:6px}
.footer-brand p{color:var(--muted-2);font-size:13px;margin-top:8px}
.footer-meta{text-align:right;color:var(--muted-2);font-size:13px;line-height:1.9}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:.7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- burger / mobile ---------- */
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--text);transition:.3s}

/* ---------- tablet & below ---------- */
@media(max-width:900px){
  .header-inner{height:82px}
  .brand-logo{height:56px}
  .nav{position:fixed;inset:82px 0 auto 0;flex-direction:column;background:rgba(8,11,17,.97);
    backdrop-filter:blur(14px);padding:20px 24px 28px;gap:2px;border-bottom:1px solid var(--line);
    transform:translateY(-130%);transition:.35s var(--ease);z-index:90}
  .nav.open{transform:none}
  .nav a{padding:16px 4px;font-size:17px;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .burger{display:flex}
  .btn-solid.btn-sm{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cap-grid{grid-template-columns:1fr 1fr}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .about-side{order:-1}
  .footer-inner{flex-direction:column;align-items:flex-start}
  .footer-meta{text-align:left}
  .footer-logo{height:88px}
}
/* ---------- phone ---------- */
@media(max-width:560px){
  .container{padding:0 18px}
  .header-inner{height:70px}
  .brand-logo{height:46px}
  .nav{inset:70px 0 auto 0}
  .lang-btn{padding:7px 10px;font-size:12px}
  .section{padding:56px 0}
  .section-head{margin-bottom:36px}
  .hero{padding:48px 0 48px}
  .hero-cta{flex-direction:column;width:100%;gap:12px}
  .hero-cta .btn{width:100%}
  .trust-tags{gap:8px}
  .trust-tags span{font-size:11.5px;padding:6px 11px}
  .stats{padding:8px 0 24px}
  .stats-grid{gap:12px}
  .stat{padding:20px 14px}
  .cap-grid{grid-template-columns:1fr}
  .cap-card{padding:24px}
  .cap-scope{padding:18px 18px}
  .partner-grid{grid-template-columns:repeat(3,1fr);gap:12px}
  .partner-tile{padding:16px 8px;gap:9px}
  .partner-chip{width:46px;height:46px}
  .partner-tile span:last-child{font-size:12px}
  .certs{gap:8px}
  .cert-badge{flex:1 1 100%}
  .contact-block{padding:32px 22px}
  .footer-logo{height:72px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important}.reveal{opacity:1;transform:none;transition:none}}