/* ============================================================
   Lilart Teknoloji A.Ş. — deep-tech visual system
   Dark, atmospheric, restrained. Glass + fine lines + motion.
   No neon glow, no big gradients-as-decoration.
   ============================================================ */

:root{
  --bg:#06080F;
  --bg-2:#0A0E1A;
  --ink:#E9ECF4;
  --muted:#8B93A7;
  --faint:#565E72;
  --line:rgba(233,236,244,.09);
  --line-2:rgba(233,236,244,.16);
  --blue:#3B6BFF;
  --blue-soft:#7C9CFF;
  --cyan:#56D6FF;
  --glass:rgba(255,255,255,.035);
  --glass-2:rgba(255,255,255,.06);

  --display:"Sora",-apple-system,system-ui,sans-serif;
  --sans:"Inter",-apple-system,system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",monospace;

  --maxw:1180px;
  --gut:clamp(20px,5vw,56px);
  --r:16px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.62;
  letter-spacing:-0.01em;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg,canvas{display:block;max-width:100%}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.04;letter-spacing:-0.025em;margin:0}
p{margin:0 0 1.05em}
.mono{font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;text-transform:uppercase}

/* fixed atmosphere */
#bg-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;opacity:.55}
.bg-tint{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(120% 80% at 78% -10%, rgba(59,107,255,.16), transparent 55%),
    radial-gradient(90% 70% at 10% 110%, rgba(86,214,255,.07), transparent 50%),
    linear-gradient(180deg, #06080F 0%, #070A13 60%, #06080F 100%);
}
.bg-grid{position:fixed;inset:0;z-index:0;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;
  -webkit-mask-image:radial-gradient(120% 100% at 50% 0%, #000 0%, transparent 75%);
          mask-image:radial-gradient(120% 100% at 50% 0%, #000 0%, transparent 75%);
}
main,.topbar,.foot{position:relative;z-index:2}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.section{padding:clamp(80px,12vw,150px) 0}
.muted{color:var(--muted)}

/* scroll progress */
#progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:90;
  background:linear-gradient(90deg,var(--blue),var(--cyan));box-shadow:0 0 12px rgba(59,107,255,.5)}

/* cursor glow (desktop) */
#glow{position:fixed;width:420px;height:420px;border-radius:50%;z-index:1;pointer-events:none;
  background:radial-gradient(circle, rgba(59,107,255,.14), transparent 65%);
  transform:translate(-50%,-50%);opacity:0;transition:opacity .3s;mix-blend-mode:screen}

/* topbar */
.topbar{position:sticky;top:0;z-index:80;
  background:rgba(6,8,15,.6);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line)}
.topbar .row{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:600;font-size:19px;letter-spacing:-.02em}
.brand img{width:32px;height:32px;filter:drop-shadow(0 0 10px rgba(59,107,255,.35))}
.nav{display:flex;gap:26px;margin-left:auto;font-size:14.5px;color:var(--muted)}
.nav a{transition:color .15s}.nav a:hover{color:var(--ink)}
.lang{display:inline-flex;border:1px solid var(--line-2);border-radius:999px;overflow:hidden;font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.06em}
.lang button{border:0;background:transparent;padding:7px 13px;cursor:pointer;color:var(--muted);font-family:var(--mono);font-weight:500}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.lang .sep{width:1px;background:var(--line-2)}
.menu-btn{display:none;background:none;border:0;cursor:pointer;margin-left:auto;color:var(--ink)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:999px;
  font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;
  transition:transform .12s,background .15s,border-color .15s,color .15s;will-change:transform}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{background:#fff}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 8px 30px -12px rgba(59,107,255,.7)}
.btn-blue:hover{background:#2f5cf0}
.btn-ghost{border-color:var(--line-2);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--ink)}
.btn .arr{transition:transform .15s}.btn:hover .arr{transform:translateX(3px)}

/* hero */
.hero{position:relative;padding:clamp(70px,11vw,140px) 0 clamp(50px,8vw,90px);overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center 38%;opacity:.5;z-index:0}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,8,15,.55),rgba(6,8,15,.92) 62%,var(--bg))}
.hero .inner{position:relative;z-index:2;max-width:920px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--blue-soft);margin-bottom:30px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.hero h1{font-size:clamp(40px,7.6vw,86px);max-width:15ch}
.hero .lede{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:52ch;margin:30px 0 38px;line-height:1.55}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .meta{margin-top:60px;display:flex;flex-wrap:wrap;gap:30px 60px;border-top:1px solid var(--line);padding-top:32px}
.metric .n{font-family:var(--display);font-size:clamp(30px,4vw,44px);font-weight:600;line-height:1;letter-spacing:-.02em}
.metric .n .accent{color:var(--blue-soft)}
.metric .l{font-size:13.5px;color:var(--muted);margin-top:9px;max-width:24ch}

/* section heads */
.head{max-width:60ch;margin-bottom:clamp(40px,5vw,64px)}
.kick{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--blue-soft);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.kick::before{content:"";width:22px;height:1px;background:var(--blue-soft);opacity:.6}
.head h2{font-size:clamp(28px,4.6vw,50px)}
.head p{color:var(--muted);font-size:18px;margin-top:20px;line-height:1.55}

/* what-is */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,5vw,72px);align-items:start}
.cards2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.card{border:1px solid var(--line);border-radius:var(--r);padding:24px;background:var(--glass);backdrop-filter:blur(8px);transition:border-color .2s,transform .2s,background .2s}
.card:hover{border-color:var(--line-2);transform:translateY(-3px);background:var(--glass-2)}
.card h4{font-size:18.5px;margin-bottom:8px;font-family:var(--display)}
.card p{font-size:14.5px;color:var(--muted);margin:0}
.card .ix{font-family:var(--mono);color:var(--blue-soft);font-size:12.5px;font-weight:500;display:block;margin-bottom:12px;letter-spacing:.1em}

/* portfolio */
.portfolio-wrap{position:relative}
.portfolio{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pf{border:1px solid var(--line);border-radius:var(--r);padding:0;background:var(--glass);backdrop-filter:blur(8px);
  display:flex;flex-direction:column;gap:14px;min-height:210px;transition:border-color .2s,transform .2s,background .2s;overflow:hidden}
.pf-img{width:100%;height:150px;object-fit:cover;display:block;border-bottom:1px solid var(--line)}
.pf .pf-body{padding:0 22px 24px;display:flex;flex-direction:column;gap:14px;flex:1}
.pf .tag{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.pf h3{font-size:25px;margin-top:2px}
.pf p{font-size:14.5px;color:var(--muted);margin:0;flex:1}
.pf .more{font-size:13.5px;font-weight:600;color:var(--blue-soft);display:inline-flex;align-items:center;gap:7px}

/* products */
.product{border-top:1px solid var(--line);padding-top:clamp(50px,6vw,80px);margin-top:clamp(50px,6vw,80px)}
.product:first-of-type{border-top:0;margin-top:0;padding-top:0}
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4vw,64px);align-items:start}
.prod-name{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.prod-name h3{font-size:clamp(30px,4.8vw,52px)}
.prod-name .pill{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 11px}
.prod-lede{font-size:clamp(18px,2.2vw,23px);color:var(--ink);margin:22px 0 16px;line-height:1.42;font-family:var(--display);font-weight:500}
.prod-body{color:var(--muted);font-size:16px}
.feats{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px}
.feats li{display:flex;gap:13px;font-size:15px;color:var(--ink)}
.feats .dot{flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--blue);margin-top:9px;box-shadow:0 0 10px rgba(59,107,255,.5)}
.prod-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.factbox{border:1px solid var(--line);border-radius:var(--r);padding:26px;background:var(--glass);backdrop-filter:blur(8px)}
.factbox h5{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 16px}
.factbox .row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-top:1px solid var(--line);font-size:14.5px}
.factbox .row:first-of-type{border-top:0}
.factbox .row span:first-child{color:var(--muted)}
.factbox .row span:last-child{font-weight:600;text-align:right}

/* bilisim vadisi */
.bv{position:relative;border:1px solid var(--line-2);border-radius:22px;overflow:hidden;background:
  radial-gradient(120% 140% at 85% 0%, rgba(59,107,255,.18), transparent 55%), rgba(10,14,26,.7);
  backdrop-filter:blur(10px)}
.bv .inner{display:grid;grid-template-columns:1.1fr .9fr;gap:0}
.bv .l{padding:clamp(40px,5vw,64px)}
.bv .r{padding:clamp(40px,5vw,64px);border-left:1px solid var(--line)}
.bv .kick{color:var(--blue-soft)}
.bv h2{font-size:clamp(26px,3.6vw,44px);max-width:18ch}
.bv p{color:var(--muted);margin-top:18px}
.bv .stamp{display:inline-flex;align-items:center;gap:12px;margin-bottom:26px;padding:9px 15px;border:1px solid var(--line-2);border-radius:999px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink)}
.bv .stamp .badge{width:13px;height:13px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.bv .frow{display:flex;justify-content:space-between;gap:14px;padding:13px 0;border-top:1px solid var(--line);font-size:14.5px}
.bv .frow:first-of-type{border-top:0}
.bv .frow span:first-child{color:var(--muted)}
.bv .frow span:last-child{font-weight:600;text-align:right;max-width:60%}
.bv .l{display:flex;flex-direction:column;gap:0}
.bv-img{width:100%;max-width:420px;margin-top:28px;border-radius:16px;border:1px solid var(--line-2);align-self:flex-start}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px)}
.about-grid p{color:var(--muted);font-size:16.5px}
.values{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:6px}
.value{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:var(--glass);backdrop-filter:blur(8px)}
.value h4{font-size:17.5px;margin-bottom:7px;font-family:var(--display)}
.value p{font-size:14px;color:var(--muted);margin:0}
.value .ix{font-family:var(--mono);color:var(--blue-soft);font-weight:500;font-size:12px;letter-spacing:.1em;display:block;margin-bottom:9px}

/* brand film */
.film{position:relative;border:1px solid var(--line-2);border-radius:20px;overflow:hidden;background:#05070D;aspect-ratio:16/9;min-height:340px}
.film-stages{position:absolute;inset:0}
.film-stages .fs{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.1s ease}
.film-stages .fs.on{opacity:1}
.film video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2;background:#05070D}
.film.video-on .film-stages{display:none}
.film::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,8,15,.2),rgba(6,8,15,.86) 78%);z-index:3;pointer-events:none}
.film .cap{position:absolute;left:clamp(22px,4vw,52px);bottom:clamp(54px,7vw,72px);right:22px;z-index:4;color:#fff}
.film .cap .k{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--blue-soft);margin-bottom:12px}
.film .cap h3{font-size:clamp(20px,3vw,34px);max-width:22ch}
.film-steps{position:absolute;top:clamp(18px,3vw,28px);left:clamp(22px,4vw,52px);z-index:4;display:flex;gap:18px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--ink);text-transform:uppercase}
.film-steps span{opacity:.5}
.film-steps span:nth-child(1),.film-steps span:nth-child(2){opacity:1;color:var(--cyan)}
.film-foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:18px;color:var(--muted);font-size:14px}

/* contact */
.contact{background:var(--glass);border:1px solid var(--line);border-radius:22px;padding:clamp(40px,5vw,64px);backdrop-filter:blur(10px)}
.contact .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(30px,4vw,56px)}
.contact h2{font-size:clamp(26px,4vw,44px);max-width:16ch}
.contact p{color:var(--muted);margin-top:16px;max-width:46ch}
.cform{display:grid;gap:13px}
.cform input,.cform textarea{border:1px solid var(--line-2);border-radius:10px;padding:13px 15px;font-family:var(--sans);font-size:15px;background:rgba(5,7,13,.5);color:var(--ink)}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--blue)}
.cform textarea{resize:vertical;min-height:110px}
.cform .note{font-size:12.5px;color:var(--faint)}
.contact .channels{display:grid;gap:10px;margin-top:8px}
.contact .channels a{display:flex;align-items:center;gap:12px;font-size:15px;font-weight:500;border:1px solid var(--line);border-radius:10px;padding:13px 15px;background:rgba(5,7,13,.4);transition:border-color .15s}
.contact .channels a:hover{border-color:var(--ink)}
.contact .channels .ic{width:18px;height:18px;color:var(--blue-soft)}

/* footer */
.foot{border-top:1px solid var(--line);padding:56px 0 42px;font-size:14.5px;color:var(--muted);margin-top:clamp(40px,6vw,80px)}
.foot .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:42px}
.foot .brand{margin-bottom:14px}
.foot h6{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);margin:0 0 14px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.foot ul a:hover{color:var(--ink)}
.foot .fine{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--faint)}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* mobile nav overlay */
.mobile-nav{position:fixed;inset:0;z-index:85;background:rgba(6,8,15,.96);backdrop-filter:blur(20px);
  display:flex;flex-direction:column;justify-content:center;gap:6px;padding:var(--gut);transform:translateY(-100%);transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.mobile-nav.open{transform:none}
.mobile-nav a{font-family:var(--display);font-size:30px;font-weight:600;padding:12px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.mobile-nav .close{position:absolute;top:22px;right:var(--gut);background:none;border:0;color:var(--ink);cursor:pointer}

/* responsive */
@media (max-width:960px){
  .split,.prod-grid,.bv .inner,.contact .grid,.about-grid{grid-template-columns:1fr}
  .bv .r{border-left:0;border-top:1px solid var(--line)}
  .portfolio{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  body{font-size:16px}
  .nav{display:none}
  .menu-btn{display:inline-flex}
  .portfolio,.cards2,.values{grid-template-columns:1fr}
  .foot .top{grid-template-columns:1fr 1fr}
  #glow{display:none}
  .hero .meta{gap:22px 36px}
  .film{min-height:300px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{scroll-behavior:auto}
}