/* ── MergenHub tanıtım sitesi ───────────────────────────────────────── */
:root{
  --bg:#0b1220; --bg2:#0f172a; --panel:#141d31; --panel2:#1a2540;
  --line:#24304d; --txt:#e6ecf7; --mut:#94a3b8; --mut2:#64748b;
  --blue:#3e6bc9; --blue2:#5b8af0; --gold:#e5a93a; --green:#22c55e; --red:#e5484d;
  --rad:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--txt);
  font-family:'Segoe UI',system-ui,-apple-system,Roboto,Arial,sans-serif;
  font-size:16px; line-height:1.65; overflow-x:hidden;
}
a{color:var(--blue2);text-decoration:none}
img,svg{max-width:100%}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}

/* Nav */
.nav{position:sticky;top:0;z-index:50;background:#0b1220e6;backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--txt)}
.brand img{width:30px;height:30px}
.brand .beta{font-size:10.5px;font-weight:800;letter-spacing:.06em;color:#b45309;background:#f59e0b1f;border:1px solid #f59e0b;border-radius:999px;padding:1px 8px}
.brand .byline{font-size:11px;font-weight:600;color:var(--mut2);margin-left:-4px;align-self:flex-end;padding-bottom:2px}
.nav nav{display:flex;gap:22px;margin-left:auto}
.nav nav a{color:var(--mut);font-size:14.5px;font-weight:600}
.nav nav a:hover{color:var(--txt)}
.btn{display:inline-block;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;font-weight:700;font-size:15px;padding:11px 24px;border-radius:10px;border:0;cursor:pointer;transition:.2s;box-shadow:0 4px 18px #3e6bc955}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 24px #3e6bc977}
.btn.ghost{background:transparent;border:1px solid var(--line);box-shadow:none;color:var(--txt)}
.btn.ghost:hover{border-color:var(--blue2)}
.btn.sm{padding:8px 16px;font-size:13.5px;white-space:nowrap}

/* Hero */
.hero{position:relative;padding:88px 0 70px;background:
  radial-gradient(700px 380px at 78% -10%, #3e6bc92e, transparent),
  radial-gradient(520px 300px at 12% 110%, #e5a93a17, transparent)}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:44px;line-height:1.14;font-weight:850;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--blue2),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin:18px 0 28px;color:var(--mut);font-size:18px;max-width:520px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .mini{margin-top:20px;color:var(--mut2);font-size:13px}

/* Hero görsel — akış + panel + AI sohbet kompozisyonu */
.hero-vis{display:flex;flex-direction:column;gap:14px}
.flowcard{display:grid;grid-template-columns:1fr auto 1.35fr auto 1fr;gap:10px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--rad);padding:14px 18px}
.fnode{text-align:center;font-size:13px;font-weight:750;line-height:1.3}
.fnode small{display:block;color:var(--mut2);font-weight:500;font-size:10.5px;margin-top:2px}
.fnode.hub{display:flex;align-items:center;justify-content:center;gap:7px;background:#0d1526;border:1px solid #3e6bc977;border-radius:11px;padding:10px 8px;font-size:14px;box-shadow:0 0 22px #3e6bc933}
.fline{position:relative;height:2px;min-width:46px;background:linear-gradient(90deg,#3e6bc944,#5b8af077);border-radius:2px}
.fdot{position:absolute;top:-3px;left:0;width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 8px #e5a93acc;animation:flow 2.4s linear infinite}
.fdot.d2{animation-delay:.8s}.fdot.d3{animation-delay:1.6s}
@keyframes flow{0%{left:0;opacity:0}12%{opacity:1}88%{opacity:1}100%{left:calc(100% - 8px);opacity:0}}
.aicard{background:linear-gradient(160deg,var(--panel2),var(--panel));border:1px solid #5b8af055;border-radius:var(--rad);padding:14px 16px}
.ai-head{font-size:12px;font-weight:750;color:var(--mut);display:flex;gap:8px;align-items:center;margin-bottom:10px;letter-spacing:.02em}
.bub{max-width:88%;width:fit-content;padding:9px 13px;border-radius:12px;font-size:13px;margin:7px 0;line-height:1.5}
.bub.u{background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;margin-left:auto;border-bottom-right-radius:4px}
.bub.a{background:#0d1526;border:1px solid var(--line);border-bottom-left-radius:4px;color:var(--txt)}
.cur{display:inline-block;width:7px;height:13px;background:var(--blue2);margin-left:4px;vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* Hero görsel — stilize kontrol paneli */
.shot{background:linear-gradient(160deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:var(--rad);padding:16px;box-shadow:0 24px 60px #00000066}
.shot .bar{display:flex;gap:6px;margin-bottom:12px;align-items:center}
.shot .bar i{width:10px;height:10px;border-radius:50%;background:var(--line);display:block}
.shot .bar i:first-child{background:var(--red)}.shot .bar i:nth-child(2){background:var(--gold)}.shot .bar i:nth-child(3){background:var(--green)}
.shot .bar .bt{margin-left:8px;font-size:11.5px;font-weight:700;color:var(--mut2);letter-spacing:.03em}
.shot .grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.tile{background:#0d1526;border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.tile b{font-size:12px;color:var(--mut);font-weight:600;display:block;margin-bottom:4px}
.tile .v{font-size:21px;font-weight:800}
.tile .v.ok{color:var(--green)}.tile .v.au{color:var(--gold)}.tile .v.bl{color:var(--blue2)}
.tile.wide{grid-column:1/-1}
.tile .u{font-size:12px;font-weight:600;color:var(--mut2);margin-left:2px}
.svcs{display:flex;flex-direction:column;gap:8px;padding:10px 14px}
.svc{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:650}
.svc small{color:var(--mut2);font-weight:500;font-size:11px;margin-left:4px}
.svc em{margin-left:auto;font-style:normal;color:var(--mut);font-weight:500;font-size:12px;text-align:right}
.dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;display:block}
.dot.ok{background:var(--green);box-shadow:0 0 6px #22c55e88}
.dot.bl{background:var(--blue2);box-shadow:0 0 6px #5b8af088}
.dot.au{background:var(--gold)}
.spark{display:flex;align-items:flex-end;gap:3px;height:44px;margin-top:6px}
.spark i{flex:1;background:linear-gradient(180deg,var(--blue2),#3e6bc933);border-radius:2px 2px 0 0;display:block}

/* Metrik şeridi */
.stats{border-block:1px solid var(--line);background:var(--bg2)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:26px 22px}
.stat{text-align:center}
.stat b{display:block;font-size:30px;font-weight:850;color:var(--txt)}
.stat b span{color:var(--blue2)}
.stat small{color:var(--mut);font-size:13.5px}

/* Bölümler */
section{padding:76px 0}
.sec-h{max-width:640px;margin:0 auto 44px;text-align:center}
.kicker{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:10px}
.sec-h h2{font-size:32px;font-weight:800;letter-spacing:-.3px}
.sec-h p{color:var(--mut);margin-top:10px}

/* Özellik kartları */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{background:var(--panel);border:1px solid var(--line);border-radius:var(--rad);padding:24px;transition:.25s}
.feat:hover{border-color:#3e6bc9aa;transform:translateY(-3px)}
.feat .ic{width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:22px;background:#3e6bc922;margin-bottom:14px}
.feat h3{font-size:17.5px;font-weight:750;margin-bottom:8px}
.feat p{color:var(--mut);font-size:14.5px}

/* Protokoller */
.protos{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:860px;margin:0 auto}
.proto{background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:9px 18px;font-size:14px;font-weight:650;color:var(--txt)}
.proto span{color:var(--mut2);font-weight:500;font-size:12.5px;margin-left:6px}
.proto.hl{border-color:#e5a93a88;color:var(--gold)}

/* Mimari */
.arch{background:var(--bg2);border-block:1px solid var(--line)}
.arch-d{display:grid;grid-template-columns:1fr auto 1.25fr auto 1fr;gap:14px;align-items:stretch;max-width:1000px;margin:0 auto}
.acol{display:flex;flex-direction:column;gap:10px;justify-content:center}
.abox{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 16px;font-size:13.5px;font-weight:600;text-align:center}
.abox small{display:block;color:var(--mut2);font-weight:500;font-size:11.5px;margin-top:2px}
.acore{background:linear-gradient(160deg,#1a2540,#141d31);border:1px solid #3e6bc966;border-radius:var(--rad);padding:18px;display:flex;flex-direction:column;gap:10px;justify-content:center}
.acore .t{text-align:center;font-weight:800;font-size:16px;margin-bottom:2px}
.acore .t small{display:block;color:var(--gold);font-size:11px;font-weight:700;letter-spacing:.08em}
.acore .abox{background:#0d1526}
.arr{display:flex;align-items:center;color:var(--mut2);font-size:22px}

/* Beta */
.beta-box{max-width:760px;margin:0 auto;background:linear-gradient(160deg,var(--panel2),var(--panel));border:1px solid #f59e0b55;border-radius:var(--rad);padding:36px;text-align:center}
.beta-box h2{font-size:26px;margin-bottom:12px}
.beta-box p{color:var(--mut);margin-bottom:8px}
.beta-box .note{font-size:13px;color:var(--mut2);margin:14px auto 22px;max-width:560px}

/* İletişim */
.contact{display:grid;grid-template-columns:1fr 1.2fr;gap:36px;max-width:960px;margin:0 auto}
.cinfo h3{font-size:20px;margin-bottom:10px}
.cinfo p{color:var(--mut);font-size:15px;margin-bottom:18px}
.cinfo .line{display:flex;gap:10px;align-items:center;margin:10px 0;font-size:15px}
.cform{background:var(--panel);border:1px solid var(--line);border-radius:var(--rad);padding:26px}
.cform label{display:block;font-size:13px;font-weight:650;color:var(--mut);margin:12px 0 5px}
.cform input,.cform textarea{width:100%;background:#0d1526;border:1px solid var(--line);border-radius:9px;color:var(--txt);padding:11px 13px;font:inherit;font-size:14.5px}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--blue2)}
.cform .ok{background:#22c55e22;border:1px solid #22c55e77;color:#4ade80;border-radius:9px;padding:10px 14px;font-size:14px;margin-bottom:6px}
.cform .err{background:#e5484d22;border:1px solid #e5484d77;color:#f87171;border-radius:9px;padding:10px 14px;font-size:14px;margin-bottom:6px}
.hp{position:absolute;left:-9999px;opacity:0}

/* Sektörler şeridi */
.sectors{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px 14px;justify-content:center;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:13px 26px;font-size:14px}
.sectors span{color:var(--mut2);font-size:12.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.sectors b{font-weight:700}
.sectors i{color:var(--mut2);font-style:normal}

/* Footer */
footer{border-top:1px solid var(--line);padding:40px 0 0;background:var(--bg2)}
.fcols{display:grid;grid-template-columns:1.4fr 1fr 1.3fr;gap:34px;padding-bottom:28px}
.fcol h4{font-size:12.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--mut);margin-bottom:12px}
.fcol p{color:var(--mut2);font-size:13.5px;margin-top:10px;max-width:300px}
.fcol a,.fcol span{display:block;color:var(--mut);font-size:14px;margin:7px 0}
.fcol a:hover{color:var(--txt)}
footer .brand{font-size:16px}
.fbottom{display:flex;align-items:center;gap:14px;color:var(--mut2);font-size:13px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:16px;padding-bottom:16px}
.fbottom .sp{margin-left:auto}
@media(max-width:700px){.fcols{grid-template-columns:1fr;gap:24px}}

/* Ekran görüntüleri galerisi + lightbox */
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.gshot{margin:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;cursor:zoom-in;transition:.25s}
.gshot:hover{border-color:#3e6bc9aa;transform:translateY(-3px)}
.gshot img{display:block;width:100%;height:auto;border-bottom:1px solid var(--line)}
.gshot figcaption{padding:12px 16px;font-size:13.5px;color:var(--mut)}
.lb{position:fixed;inset:0;background:#050a14e6;backdrop-filter:blur(5px);display:none;flex-direction:column;align-items:center;justify-content:center;z-index:120;padding:26px;cursor:zoom-out;gap:12px}
.lb.open{display:flex}
.lb img{max-width:96%;max-height:86vh;border-radius:12px;border:1px solid var(--line);box-shadow:0 30px 90px #000c}
.lbcap{color:var(--mut);font-size:14px}
@media(max-width:700px){.gallery{grid-template-columns:1fr}}

/* İndirme modalı */
.dlwrap{position:fixed;inset:0;background:#050a14cc;backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.dlwrap.open{display:flex}
.dlbox{position:relative;width:100%;max-width:420px;background:linear-gradient(160deg,var(--panel2),var(--panel));border:1px solid #3e6bc966;border-radius:var(--rad);padding:28px;box-shadow:0 30px 80px #000a;max-height:92vh;overflow:auto}
.dlbox h3{font-size:20px;margin-bottom:6px}
.dlsub{color:var(--mut);font-size:13.5px;margin-bottom:14px}
.dlbox label{display:block;font-size:13px;font-weight:650;color:var(--mut);margin:11px 0 5px}
.dlbox label em{color:var(--gold);font-style:normal}
.dlbox input{width:100%;box-sizing:border-box;background:#0d1526;border:1px solid var(--line);border-radius:9px;color:var(--txt);padding:10px 13px;font:inherit;font-size:14.5px}
.dlbox input:focus{outline:none;border-color:var(--blue2)}
.dlx{position:absolute;top:12px;right:12px;background:transparent;border:0;color:var(--mut2);font-size:17px;cursor:pointer;padding:6px;border-radius:8px}
.dlx:hover{color:var(--txt);background:#ffffff12}
.dlnote{margin-top:12px;font-size:11.5px;color:var(--mut2);text-align:center;line-height:1.6}
.dlerr{background:#e5484d22;border:1px solid #e5484d77;color:#f87171;border-radius:9px;padding:10px 14px;font-size:14px;margin:0 auto 16px;max-width:420px}

/* Animasyon */
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
.rv.in{opacity:1;transform:none}

/* Mobil */
@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .feats{grid-template-columns:1fr 1fr}
  .stats .wrap{grid-template-columns:1fr 1fr}
  .arch-d{grid-template-columns:1fr}
  .arr{justify-content:center;transform:rotate(90deg)}
  .contact{grid-template-columns:1fr}
  .nav nav{display:none}
}
@media(max-width:560px){
  .feats{grid-template-columns:1fr}
  .hero{padding:56px 0 44px}
  .hero h1{font-size:29px}
}