:root{
    --bg:#0a111d;
    --bg-2:#101b2d;
    --bg-3:#16243a;
    --line:rgba(255,255,255,0.08);
    --accent:#3a9bdc;
    --accent-2:#7fe6ff;
    --text:#eef3fb;
    --muted:#8ea0bd;
    --mono:'JetBrains Mono',monospace;
    --disp:'Space Grotesk',sans-serif;
    --body:'Inter',sans-serif;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--body);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}

  /* background grid texture */
  body::before{
    content:'';
    position:fixed;
    inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size:48px 48px;
    pointer-events:none;
    z-index:0;
    mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,0,0,1) 0%, rgba(0,0,0,0.2) 70%, transparent 100%);
  }

  .wrap{max-width:1180px;margin:0 auto;padding:0 28px;position:relative;z-index:1;}

  /* eyebrow / labels */
  .eyebrow{
    font-family:var(--mono);
    font-size:0.78rem;
    letter-spacing:0.18em;
    text-transform:uppercase;
    color:var(--accent-2);
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:14px;
  }
  .eyebrow::before{
    content:'';
    width:8px;height:8px;border-radius:50%;
    background:var(--accent-2);
    box-shadow:0 0 0 4px rgba(127,230,255,0.15);
    flex-shrink:0;
  }

  /* ---------- HEADER ---------- */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(10,17,29,0.75);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex;align-items:center;justify-content:space-between;
    padding:16px 0;
  }
  .brand{display:flex;align-items:center;gap:12px;font-family:var(--disp);font-weight:700;font-size:1.15rem;letter-spacing:0.04em;}
  .brand img{width:38px;height:38px;border-radius:8px;}
  .brand small{display:block;font-family:var(--mono);font-weight:400;font-size:0.62rem;letter-spacing:0.22em;color:var(--accent-2);margin-top:2px;}
  nav.links{display:flex;gap:34px;font-size:0.92rem;font-weight:500;}
  nav.links a{color:var(--muted);transition:color .2s;position:relative;}
  nav.links a:hover{color:var(--text);}
  nav.links a::after{
    content:'';position:absolute;left:0;bottom:-6px;width:0;height:1px;background:var(--accent-2);
    transition:width .2s;
  }
  nav.links a:hover::after{width:100%;}
  .nav-cta{
    font-family:var(--mono);font-size:0.82rem;letter-spacing:0.05em;
    border:1px solid var(--accent);color:var(--accent-2);
    padding:9px 18px;border-radius:999px;transition:all .2s;
    white-space:nowrap;
  }
  .nav-cta:hover{background:var(--accent);color:#04101c;}
  .burger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:6px;}
  .burger span{width:24px;height:2px;background:var(--text);border-radius:2px;}

  /* ---------- HERO ---------- */
  .hero{
    padding:100px 0 90px;
    position:relative;
    overflow:hidden;
  }
  .hero-grid{
    display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center;
  }
  .hero h1{
    font-family:var(--disp);
    font-weight:700;
    font-size:clamp(2.6rem,6.5vw,4.6rem);
    line-height:1.04;
    letter-spacing:-0.01em;
    margin-bottom:22px;
  }
  .hero h1 .accent{
    background:linear-gradient(100deg,var(--accent-2),var(--accent) 70%);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero p.lead{
    color:var(--muted);
    font-size:1.08rem;
    max-width:520px;
    margin-bottom:34px;
  }
  .hero-ctas{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px;}
  .btn{
    font-family:var(--body);font-weight:600;font-size:0.95rem;
    padding:14px 28px;border-radius:8px;display:inline-flex;align-items:center;gap:10px;
    transition:all .2s;
  }
  .btn-primary{background:var(--accent);color:#04101c;}
  .btn-primary:hover{background:var(--accent-2);transform:translateY(-2px);}
  .btn-ghost{border:1px solid var(--line);color:var(--text);}
  .btn-ghost:hover{border-color:var(--accent-2);color:var(--accent-2);}

  .hero-stats{display:flex;gap:42px;flex-wrap:wrap;}
  .hero-stats .stat-num{font-family:var(--disp);font-size:2rem;font-weight:700;color:var(--accent-2);}
  .hero-stats .stat-label{font-family:var(--mono);font-size:0.72rem;letter-spacing:0.12em;color:var(--muted);text-transform:uppercase;margin-top:4px;}

  /* ---------- NETWORK SIGNATURE DIAGRAM ---------- */
  .network-wrap{position:relative;}
  .network-wrap svg{width:100%;height:auto;}
  .net-line{
    fill:none;stroke:var(--accent);stroke-opacity:0.35;stroke-width:1.4;
  }
  .net-pulse{
    fill:none;stroke:var(--accent-2);stroke-width:2;
    stroke-dasharray:8 240;
    filter:drop-shadow(0 0 4px var(--accent-2));
    animation:travel 5s linear infinite;
  }
  .net-pulse.d2{animation-delay:-1.2s;stroke:var(--accent);}
  .net-pulse.d3{animation-delay:-2.7s;}
  .net-pulse.d4{animation-delay:-3.8s;stroke:var(--accent);}
  @keyframes travel{
    to{stroke-dashoffset:-480;}
  }
  .net-node{fill:var(--bg-3);stroke:var(--line);stroke-width:1.5;}
  .net-core{fill:var(--bg-2);stroke:var(--accent);stroke-width:1.5;}
  .net-core-ring{fill:none;stroke:var(--accent);stroke-opacity:0.3;stroke-width:1;
    animation:pulse-ring 3s ease-out infinite;
    transform-origin:center;
  }
  @keyframes pulse-ring{
    0%{transform:scale(1);opacity:0.6;}
    100%{transform:scale(1.9);opacity:0;}
  }
  .net-label{
    font-family:var(--mono);font-size:9px;fill:var(--muted);letter-spacing:0.05em;
  }
  .net-icon{stroke:var(--accent-2);stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round;}

  /* ---------- SECTION HEADINGS ---------- */
  section{padding:96px 0;border-top:1px solid var(--line);}
  .sec-head{max-width:680px;margin-bottom:56px;}
  .sec-head h2{
    font-family:var(--disp);font-weight:700;font-size:clamp(1.9rem,4vw,2.7rem);letter-spacing:-0.01em;margin-bottom:14px;
  }
  .sec-head p{color:var(--muted);font-size:1.02rem;}

  /* ---------- ABOUT ---------- */
  .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
  .about-card{
    background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:34px;
  }
  .about-card h3{font-family:var(--disp);font-size:1.25rem;margin-bottom:14px;color:var(--accent-2);}
  .about-card p{color:var(--muted);font-size:0.97rem;}
  .about-card + .about-card{margin-top:24px;}
  .info-table{
    background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:34px;
  }
  .info-row{display:flex;flex-direction:column;gap:4px;padding:16px 0;border-bottom:1px solid var(--line);}
  .info-row:last-child{border-bottom:none;padding-bottom:0;}
  .info-row:first-child{padding-top:0;}
  .info-row .k{font-family:var(--mono);font-size:0.7rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--accent-2);}
  .info-row .v{font-size:1rem;color:var(--text);font-weight:500;}

  /* ---------- SERVICES ---------- */
  .services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;}
  .service-card{
    background:var(--bg-2);padding:32px 26px;transition:background .25s;position:relative;
  }
  .service-card:hover{background:var(--bg-3);}
  .service-card .num{font-family:var(--mono);font-size:0.72rem;color:var(--muted);letter-spacing:0.1em;}
  .service-card .icon{margin:18px 0 16px;color:var(--accent-2);}
  .service-card h4{font-family:var(--disp);font-size:1.02rem;margin-bottom:10px;line-height:1.3;}
  .service-card p{font-size:0.86rem;color:var(--muted);}
  .service-card.new{background:linear-gradient(160deg, rgba(58,155,220,0.14), rgba(16,27,45,1));}
  .service-card.new .num{color:var(--accent-2);}

  .dc-gallery{
    display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px;
  }
  .dc-gallery figure{
    background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:18px;
  }
  .dc-illus{width:100%;height:auto;display:block;}
  .dc-frame{fill:var(--bg);stroke:var(--line);stroke-width:1.5;}
  .dc-rack{fill:var(--bg-3);stroke:var(--accent);stroke-opacity:0.5;stroke-width:1.2;}
  .dc-units line{stroke:var(--accent);stroke-opacity:0.35;stroke-width:1.4;}
  .dc-led{fill:var(--accent-2);filter:drop-shadow(0 0 3px var(--accent-2));}
  .dc-cable{fill:none;stroke:var(--accent-2);stroke-width:1.6;stroke-opacity:0.7;}
  .dc-cable.c2{stroke:var(--accent);stroke-opacity:0.55;}
  .dc-cable.c3{stroke:var(--muted);stroke-opacity:0.5;}
  .dc-gallery figcaption{
    font-family:var(--mono);font-size:0.74rem;letter-spacing:0.08em;color:var(--muted);
    text-align:center;margin-top:12px;
  }
  @media (max-width:980px){.dc-gallery{grid-template-columns:1fr 1fr;}}
  @media (max-width:560px){.dc-gallery{grid-template-columns:1fr;}}

  /* ---------- PROCESS / ALTYAPI ÇÖZÜMLERİ ---------- */
  .process{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:start;}
  .process-img{border-radius:14px;overflow:hidden;border:1px solid var(--line);position:sticky;top:110px;}
  .process-list{display:flex;flex-direction:column;}
  .process-item{
    display:grid;grid-template-columns:48px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);
  }
  .process-item:first-child{padding-top:0;}
  .process-item:last-child{border-bottom:none;}
  .process-item .pnum{font-family:var(--mono);font-size:0.95rem;color:var(--accent-2);}
  .process-item h4{font-family:var(--disp);font-size:1.02rem;font-weight:600;margin-bottom:4px;}
  .process-item p{font-size:0.88rem;color:var(--muted);}

  /* ---------- GALLERY / WORK ---------- */
  .gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
  .gallery figure{border-radius:12px;overflow:hidden;border:1px solid var(--line);position:relative;background:var(--bg-2);}
  .gallery img{height:230px;width:100%;object-fit:cover;display:block;transition:transform .4s;}
  .gallery figure:hover img{transform:scale(1.05);}
  .gallery figcaption{
    position:absolute;left:0;bottom:0;right:0;padding:16px;
    font-family:var(--mono);font-size:0.74rem;letter-spacing:0.06em;color:var(--text);
    background:linear-gradient(to top, rgba(10,17,29,0.92), transparent);
  }

  /* ---------- REFERENCES ---------- */
  .ref-badges{
    display:flex;flex-wrap:wrap;gap:14px;margin-bottom:48px;
  }
  .ref-badges span{
    font-family:var(--mono);font-size:0.8rem;letter-spacing:0.1em;
    border:1px solid var(--line);border-radius:999px;padding:9px 20px;color:var(--muted);
  }
  .ref-list{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;}
  .ref-item{background:var(--bg-2);padding:26px 28px;}
  .ref-item .client{font-family:var(--disp);font-weight:700;color:var(--accent-2);font-size:1rem;margin-bottom:6px;letter-spacing:0.04em;}
  .ref-item p{font-size:0.9rem;color:var(--muted);}

  /* ---------- CONTACT ---------- */
  .contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;}
  .contact-card{background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:38px;}
  .contact-card h3{font-family:var(--disp);font-size:1.4rem;margin-bottom:24px;}
  .contact-line{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start;}
  .contact-line .ico{flex-shrink:0;color:var(--accent-2);margin-top:3px;}
  .contact-line .k{font-family:var(--mono);font-size:0.68rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--muted);margin-bottom:3px;}
  .contact-line .v{font-size:1rem;}
  .contact-line .v a{color:var(--accent-2);transition:color .2s;}
  .contact-line .v a:hover{color:var(--text);}

  .form-group{margin-bottom:18px;}
  .form-group label{display:block;font-family:var(--mono);font-size:0.7rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--muted);margin-bottom:8px;}
  .form-group input,.form-group textarea,.form-group select{
    width:100%;background:var(--bg);border:1px solid var(--line);border-radius:8px;
    padding:13px 14px;color:var(--text);font-family:var(--body);font-size:0.95rem;
    transition:border-color .2s;
  }
  .form-group input:focus,.form-group textarea:focus,.form-group select:focus{
    outline:none;border-color:var(--accent);
  }
  .form-group textarea{resize:vertical;min-height:110px;}
  .form-note{font-size:0.8rem;color:var(--muted);margin-top:14px;}

  /* ---------- FOOTER ---------- */
  footer{border-top:1px solid var(--line);padding:48px 0 36px;}
  .footer-grid{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:24px;}
  .footer-brand{display:flex;align-items:center;gap:12px;font-family:var(--disp);font-weight:700;}
  .footer-brand img{width:32px;height:32px;border-radius:7px;}
  .footer-tag{font-family:var(--mono);font-size:0.7rem;letter-spacing:0.2em;color:var(--accent-2);margin-top:4px;}
  .footer-right{font-size:0.85rem;color:var(--muted);text-align:right;}
  .footer-right a{color:var(--muted);}
  .footer-right a:hover{color:var(--accent-2);}

  /* ---------- RESPONSIVE ---------- */
  @media (max-width:980px){
    nav.links{display:none;}
    .burger{display:flex;}
    .hero-grid{grid-template-columns:1fr;gap:48px;}
    .network-wrap{order:-1;max-width:420px;margin:0 auto;}
    .about-grid,.process,.contact-grid{grid-template-columns:1fr;}
    .process-img{position:static;}
    .services-grid{grid-template-columns:repeat(2,1fr);}
    .gallery{grid-template-columns:1fr 1fr;}
    .ref-list{grid-template-columns:1fr;}
  }
  @media (max-width:560px){
    .hero{padding:64px 0 56px;}
    .services-grid{grid-template-columns:1fr;}
    .gallery{grid-template-columns:1fr;}
    .hero-stats{gap:28px;}
    section{padding:64px 0;}
    .footer-grid{flex-direction:column;align-items:flex-start;}
    .footer-right{text-align:left;}
  }

  /* mobile nav panel */
  .mobile-nav{
    display:none;flex-direction:column;gap:0;background:var(--bg-2);
    border-top:1px solid var(--line);
  }
  .mobile-nav.open{display:flex;}
  .mobile-nav a{padding:16px 28px;border-bottom:1px solid var(--line);font-weight:500;color:var(--muted);}
  .mobile-nav a:hover{color:var(--text);}

  /* reduced motion */
  @media (prefers-reduced-motion: reduce){
    .net-pulse,.net-core-ring{animation:none;}
  }

/* ---------- LANGUAGE SWITCHER ---------- */
.lang-switch{
  display:flex;align-items:center;gap:2px;
  border:1px solid var(--line);border-radius:999px;padding:3px;
  font-family:var(--mono);font-size:0.74rem;letter-spacing:0.08em;
}
.lang-switch a{
  padding:6px 11px;border-radius:999px;color:var(--muted);transition:all .2s;
}
.lang-switch a:hover{color:var(--text);}
.lang-switch a.active{background:var(--accent);color:#04101c;}

/* ---------- WHY / HIGHLIGHTS STRIP ---------- */
.highlights{
  margin-top:48px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;
}
.highlight-item{background:var(--bg-2);padding:28px 24px;}
.highlight-item .icon{color:var(--accent-2);margin-bottom:14px;}
.highlight-item h4{font-family:var(--disp);font-size:0.98rem;margin-bottom:8px;line-height:1.3;}
.highlight-item p{font-size:0.85rem;color:var(--muted);}
@media (max-width:980px){.highlights{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.highlights{grid-template-columns:1fr;}}

/* ---------- RF HEATMAP ILLUSTRATION ---------- */
.heatmap-wrap{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:24px;
}
.heatmap-illus{width:100%;height:auto;display:block;border-radius:8px;}

/* ---------- SERVICES GRID: flexible for variable card counts ---------- */
.services-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}

/* ---------- RTL SUPPORT (Arabic) ---------- */
html[dir="rtl"] body::before{
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,0,0,1) 0%, rgba(0,0,0,0.2) 70%, transparent 100%);
}
html[dir="rtl"] .eyebrow{flex-direction:row-reverse;}
html[dir="rtl"] nav.links a::after{left:auto;right:0;}
html[dir="rtl"] .net-label{direction:ltr;}
html[dir="rtl"] .contact-line{flex-direction:row-reverse;text-align:right;}
html[dir="rtl"] .footer-right{text-align:left;}
html[dir="rtl"] .ref-item .client,
html[dir="rtl"] .gallery figcaption,
html[dir="rtl"] .dc-gallery figcaption,
html[dir="rtl"] .net-label,
html[dir="rtl"] .eyebrow,
html[dir="rtl"] .info-row .k,
html[dir="rtl"] .stat-label,
html[dir="rtl"] .process-item .pnum,
html[dir="rtl"] .footer-tag{direction:ltr;}
html[dir="rtl"] .footer-grid{flex-direction:row-reverse;}
@media (max-width:980px){
  html[dir="rtl"] .footer-grid{flex-direction:column;}
}

/* ---------- RF HEATMAP MINI ILLUSTRATION ---------- */
.rf-gallery{margin-top:24px;}
.rf-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;
  padding:24px;display:grid;grid-template-columns:1.3fr 1fr;gap:28px;align-items:center;
}
.rf-illus{width:100%;height:auto;display:block;border-radius:8px;background:var(--bg);}
.rf-card-text h4{font-family:var(--disp);font-size:1.1rem;margin-bottom:10px;}
.rf-card-text p{font-size:0.92rem;color:var(--muted);}
@media (max-width:980px){.rf-card{grid-template-columns:1fr;}}

/* Safety: ensure long mixed-direction text wraps within containers */
.info-row .v, .contact-line .v, p, .sec-head p {
  overflow-wrap: anywhere;
}

/* ---------- FORM RESULT MODAL ---------- */
.modal-overlay{
  position:fixed;inset:0;background:rgba(6,10,18,0.7);
  display:none;align-items:center;justify-content:center;
  z-index:100;padding:20px;
}
.modal-overlay.open{display:flex;}
.modal-box{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;
  padding:32px;max-width:420px;width:100%;text-align:center;
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
}
.modal-icon{
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;
}
.modal-icon.success{background:rgba(58,155,220,0.15);color:var(--accent-2);}
.modal-icon.error{background:rgba(220,90,58,0.15);color:#ff8a65;}
.modal-box h4{font-family:var(--disp);font-size:1.15rem;margin-bottom:10px;}
.modal-box p{font-size:0.92rem;color:var(--muted);margin-bottom:22px;}
.modal-box .btn{display:inline-flex;}