:root{
  --primary:#0f4c81;
  --primary-dark:#0a3760;
  --accent:#f2a71b;
  --text:#22303f;
  --muted:#66788c;
  --bg-light:#f5f8fb;
  --border:#e4eaf1;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Segoe UI',Arial,sans-serif;color:var(--text);line-height:1.6;background:#fff;}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
.container{max-width:1180px;margin:0 auto;padding:0 20px;}
.section{padding:70px 0;}
.section-bg{background:var(--bg-light);}
.section-head{text-align:center;max-width:640px;margin:0 auto 44px;}
.section-head .tag{color:var(--accent);font-weight:700;font-size:13px;letter-spacing:1.5px;text-transform:uppercase;}
.section-head h2{font-size:32px;margin:8px 0 12px;color:var(--primary-dark);}
.section-head p{color:var(--muted);font-size:15.5px;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:8px;font-weight:600;font-size:14.5px;border:2px solid transparent;transition:.2s;}
.btn-accent{background:var(--accent);color:#20140a;}
.btn-accent:hover{background:#e0960f;}
.btn-outline{border-color:#fff;color:#fff;}
.btn-outline:hover{background:#fff;color:var(--primary-dark);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);}

/* Topbar */
.topbar{background:var(--primary-dark);color:#dce6f2;font-size:13px;padding:8px 0;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px;}
.topbar a{color:#dce6f2;}
.topbar .top-contacts{display:flex;gap:20px;flex-wrap:wrap;}
.topbar .top-social a{margin-left:12px;font-size:14px;}

/* Header */
header.site-header{background:#fff;box-shadow:0 2px 14px rgba(15,76,129,.07);position:sticky;top:0;z-index:100;}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--primary-dark);max-width:70%;}
.logo img{height:52px;width:auto;max-width:100%;object-fit:contain;}
nav.main-nav ul{display:flex;gap:6px;}
nav.main-nav a{padding:10px 16px;font-weight:600;font-size:14.5px;color:var(--text);border-radius:6px;}
nav.main-nav a:hover, nav.main-nav a.active{color:var(--primary);background:var(--bg-light);}
.header-cta{display:flex;align-items:center;gap:14px;}
.header-cta .phone{font-weight:700;color:var(--primary-dark);font-size:15px;}
.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--primary-dark);}

/* Mobil menü backdrop + close butonu */
/* KRİTİK: z-index header'ın (100) ALTINDA olmalı, aksi halde header stacking context'i
   içindeki nav (z-index 200) linklerini backdrop örter ve tıklama yenmez.
   Header (100) > backdrop (90) → header her zaman üstte → nav'ın linkleri erişilebilir. */
.menu-backdrop{position:fixed;inset:0;background:rgba(10,20,30,.55);z-index:90;opacity:0;pointer-events:none;transition:opacity .25s;}
.menu-backdrop.open{opacity:1;pointer-events:auto;}
.menu-close{display:none;position:absolute;top:12px;right:14px;background:none;border:none;font-size:32px;color:var(--primary-dark);cursor:pointer;line-height:1;padding:6px 12px;}

@media(max-width:960px){
  nav.main-nav{position:fixed;top:0;right:-320px;width:280px;max-width:75vw;height:100vh;background:#fff;box-shadow:-4px 0 20px rgba(0,0,0,.15);transition:right .3s ease;padding:60px 0 20px;z-index:200;overflow-y:auto;display:block;}
  nav.main-nav.open{right:0;}
  nav.main-nav ul{display:flex !important;flex-direction:column;gap:0;padding:0;margin:0;list-style:none;width:100%;}
  nav.main-nav ul li{display:block;width:100%;margin:0;padding:0;}
  nav.main-nav ul li a{display:block !important;padding:16px 22px;font-size:16px;font-weight:600;color:#22303f !important;background:#fff;border-radius:0;border-bottom:1px solid var(--border);text-decoration:none;line-height:1.3;cursor:pointer;pointer-events:auto;-webkit-tap-highlight-color:rgba(15,76,129,.15);touch-action:manipulation;position:relative;z-index:1;}
  nav.main-nav ul li a:hover,
  nav.main-nav ul li a.active{background:var(--bg-light);color:var(--primary) !important;}
  .menu-close{display:block;}
  .menu-toggle{display:block;padding:6px 10px;margin-left:4px;}
  .header-cta .phone{display:none;}
}

/* Mobil (<=768px): slider mobil görsele geçer + boyutu değişir, topbar sadeleşir */
@media(max-width:768px){
  /* Slider mobil: portre görsel, daha kısa yükseklik, alttan hizalı içerik */
  .hero-slide{background-image:var(--bg-mobile,var(--bg-desktop));min-height:500px;align-items:flex-end;background-position:center;}
  .hero-slide::after{background:linear-gradient(180deg,rgba(10,55,96,.15) 0%,rgba(10,55,96,.35) 55%,rgba(10,55,96,.85) 100%);}
  .hero-content{max-width:100%;padding:0 20px 40px;text-align:center;margin:0 auto;}
  .hero-content h1{font-size:26px;line-height:1.25;margin-bottom:10px;}
  .hero-content p{font-size:14px;margin-bottom:18px;}
  .hero-content .btn{padding:11px 22px;font-size:14px;}
  .hero-dots{bottom:14px;}
  .hero-nav{width:34px;height:34px;font-size:16px;}
  .hero-nav.prev{left:10px;} .hero-nav.next{right:10px;}

  .topbar{font-size:12px;padding:6px 0;}
  .topbar .container{justify-content:center;gap:8px;}
  .topbar .top-social{display:none;}
  .topbar .top-contacts{gap:12px;justify-content:center;flex-wrap:wrap;}

  .container{padding:0 20px;}
  .header-inner{padding:12px 0;gap:12px;}
  .logo{max-width:55%;flex-shrink:0;}
  .logo img{height:auto;max-height:40px;}
  .header-cta{gap:10px;flex-shrink:0;}
  .header-cta .btn{padding:9px 14px;font-size:13px;}
  .menu-toggle{font-size:24px;background:var(--bg-light);border-radius:8px;width:40px;height:40px;padding:0;display:flex;align-items:center;justify-content:center;}

  .section{padding:36px 0;}
  .section-head{margin-bottom:24px;}
  .section-head .tag{font-size:11.5px;letter-spacing:1.2px;}
  .section-head h2, h2{font-size:22px;line-height:1.25;}
  .section-head p{font-size:14px;}
  .page-banner{padding:32px 0 24px;}
  .page-banner h1{font-size:22px;}
  .cta-banner{padding:32px 0;}
  .cta-banner h2{font-size:20px;}

  .grid,.feature-grid,.gallery-grid{gap:14px;}
  .feature-card{padding:20px 18px;}
  .feature-card .ico{font-size:28px;margin-bottom:10px;}
  .feature-card h3{font-size:16px;}
  .feature-card p{font-size:13px;}
  .card-item .body{padding:14px 16px;}

  .contact-grid,.about-grid,.detail-grid{gap:24px;}
  .map-frame iframe{height:260px;}

  footer.site-footer{padding:36px 0 0;}
  .footer-grid{gap:20px;padding-bottom:24px;}
}

@media(max-width:480px){
  .container{padding:0 16px;}
  .topbar .top-contacts a[href^="mailto"]{display:none;}
  .topbar .top-contacts span{display:none;}
  .header-cta .btn{display:none;}
  .logo{max-width:calc(100% - 60px);}
  .logo img{max-height:36px;}
  .header-inner{gap:8px;}
  .menu-toggle{width:38px;height:38px;font-size:22px;}
  .section-head h2, h2{font-size:20px;}
  .feature-grid{grid-template-columns:1fr;}
  .hero-slide{min-height:440px;}
  .hero-content h1{font-size:22px;}
  .hero-content p{font-size:13px;}
  nav.main-nav{width:260px;max-width:80vw;}
}

/* Hero / Slider */
.hero{position:relative;overflow:hidden;background:var(--primary-dark);}
.hero-slide{position:relative;min-height:520px;display:flex;align-items:center;background-size:cover;background-position:center;background-image:var(--bg-desktop);}
.hero-slide::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,55,96,.55) 0%,rgba(10,55,96,.15) 45%,rgba(10,55,96,0) 70%);pointer-events:none;}
.hero-content{position:relative;z-index:2;color:#fff;max-width:560px;padding:0 20px;text-shadow:0 2px 8px rgba(0,0,0,.55);}
.hero-content h1{font-size:40px;line-height:1.2;margin-bottom:14px;}
.hero-content p{font-size:16px;color:#dbe6f2;margin-bottom:26px;}
.hero-dots{position:absolute;bottom:20px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:3;}
.hero-dots button{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4);border:none;cursor:pointer;}
.hero-dots button.active{background:var(--accent);}
.hero-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:3;background:rgba(255,255,255,.15);color:#fff;border:none;width:42px;height:42px;border-radius:50%;font-size:20px;cursor:pointer;}
.hero-nav.prev{left:16px;} .hero-nav.next{right:16px;}
.hero-nav:hover{background:rgba(255,255,255,.3);}

/* Features */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:24px;}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;text-align:center;transition:.2s;}
.feature-card:hover{box-shadow:0 14px 34px rgba(15,76,129,.1);transform:translateY(-4px);}
.feature-card .ico{font-size:34px;margin-bottom:14px;}
.feature-card h3{font-size:17px;margin-bottom:8px;color:var(--primary-dark);}
.feature-card p{color:var(--muted);font-size:14px;}

/* Product cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:26px;}
.card-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.2s;}
.card-item:hover{box-shadow:0 16px 36px rgba(15,76,129,.12);transform:translateY(-4px);}
.card-item .img-wrap{aspect-ratio:4/3;overflow:hidden;background:var(--bg-light);}
.card-item .img-wrap img{width:100%;height:100%;object-fit:cover;transition:.3s;}
.card-item:hover .img-wrap img{transform:scale(1.06);}
.card-item .body{padding:18px 20px;}
.card-item h3{font-size:16.5px;margin-bottom:6px;color:var(--primary-dark);}
.card-item p{color:var(--muted);font-size:14px;margin-bottom:12px;}
.card-item .more{font-size:13.5px;font-weight:700;color:var(--primary);}

/* Category pills */
.cat-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px;justify-content:center;}
.cat-pills a{padding:9px 18px;border-radius:30px;border:1.5px solid var(--border);font-size:13.5px;font-weight:600;color:var(--text);}
.cat-pills a.active,.cat-pills a:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

/* About */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;}
.about-grid img{border-radius:var(--radius);}
@media(max-width:860px){.about-grid{grid-template-columns:1fr;}}

/* CTA banner */
.cta-banner{background:linear-gradient(120deg,var(--primary),var(--primary-dark));color:#fff;padding:56px 0;text-align:center;}
.cta-banner h2{font-size:28px;margin-bottom:10px;}
.cta-banner p{color:#dbe6f2;margin-bottom:22px;}

/* Gallery */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;}
.gallery-grid .g-item{border-radius:12px;overflow:hidden;aspect-ratio:1/1;background:var(--bg-light);position:relative;cursor:pointer;}
.gallery-grid .g-item img,
.gallery-grid .g-item video{width:100%;height:100%;object-fit:cover;transition:.3s;display:block;}
.gallery-grid .g-item:hover img,
.gallery-grid .g-item:hover video{transform:scale(1.08);}
/* Video karesi: dark overlay + play butonu */
.gallery-grid .g-item.g-video::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.15) 0%,rgba(0,0,0,.35) 100%);z-index:1;pointer-events:none;transition:.25s;}
.gallery-grid .g-item.g-video:hover::before{background:linear-gradient(180deg,rgba(0,0,0,.05) 0%,rgba(0,0,0,.25) 100%);}
.gallery-grid .g-item.g-video .play-icon{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:68px;height:68px;border-radius:50%;background:rgba(255,255,255,.95);
  color:var(--primary-dark);font-size:26px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 28px rgba(0,0,0,.4);
  padding-left:6px;pointer-events:none;z-index:2;transition:.25s;
}
.gallery-grid .g-item.g-video:hover .play-icon{background:#fff;transform:translate(-50%,-50%) scale(1.1);}
@media(max-width:768px){
  .gallery-grid .g-item.g-video .play-icon{width:54px;height:54px;font-size:22px;}
}

/* Referanslar — kayan bant */
.references-strip{background:var(--primary-dark);color:#fff;padding:38px 0;overflow:hidden;position:relative;}
.references-strip::before,
.references-strip::after{content:'';position:absolute;top:0;bottom:0;width:120px;z-index:2;pointer-events:none;}
.references-strip::before{left:0;background:linear-gradient(90deg,var(--primary-dark),transparent);}
.references-strip::after{right:0;background:linear-gradient(-90deg,var(--primary-dark),transparent);}
.references-track{display:flex;gap:80px;white-space:nowrap;animation:refsScroll 120s linear infinite;width:max-content;}
.ref-item{font-size:40px;font-weight:800;display:inline-flex;align-items:center;gap:16px;letter-spacing:.4px;text-transform:uppercase;}
.ref-item::before{content:'★';color:var(--accent);font-size:34px;}
.references-strip:hover .references-track{animation-play-state:paused;}
@keyframes refsScroll{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}
@media(max-width:768px){
  .references-strip{padding:26px 0;}
  .references-track{gap:50px;animation-duration:80s;}
  .ref-item{font-size:28px;gap:12px;}
  .ref-item::before{font-size:22px;}
}

/* İş Ortakları */
.partners-section{background:var(--bg-light);}
.partners-grid{display:flex;flex-wrap:wrap;gap:22px;justify-content:center;align-items:stretch;}
.partner-item{background:#fff;border:1px solid var(--border);border-radius:14px;width:240px;height:200px;display:flex;align-items:center;justify-content:center;padding:22px;transition:.25s;overflow:hidden;}
.partner-item img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;transition:.25s;}
.partner-item:hover{box-shadow:0 14px 32px rgba(15,76,129,.12);transform:translateY(-3px);border-color:var(--primary);}
/* Tek eleman varsa büyük göster (has() gerektirmez, her tarayıcıda çalışır) */
.partner-item:only-child{width:min(520px,100%);height:340px;padding:28px;}
@media(max-width:768px){
  .partners-grid{gap:14px;}
  .partner-item{width:calc(50% - 14px);height:150px;padding:16px;}
  .partner-item:only-child{width:100%;height:280px;padding:20px;}
}
@media(max-width:480px){
  .partner-item{width:100%;height:170px;}
}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(10,20,30,.92);display:none;align-items:center;justify-content:center;z-index:1000;padding:20px;}
.lightbox.open{display:flex;}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:8px;}
.lightbox .close-btn{position:absolute;top:20px;right:26px;color:#fff;font-size:32px;cursor:pointer;background:none;border:none;}

/* Product detail */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;}
@media(max-width:860px){.detail-grid{grid-template-columns:1fr;}}
.detail-grid .main-img{border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:var(--bg-light);margin-bottom:12px;}
.detail-grid .main-img img{width:100%;height:100%;object-fit:cover;}
.thumb-row{display:flex;gap:10px;flex-wrap:wrap;}
.thumb-row img{width:76px;height:76px;object-fit:cover;border-radius:8px;cursor:pointer;border:2px solid transparent;}
.thumb-row img.active{border-color:var(--primary);}
.breadcrumb{font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.breadcrumb a{color:var(--primary);}

/* Page banner */
.page-banner{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;padding:60px 0 46px;text-align:center;}
.page-banner h1{font-size:32px;}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:44px;}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;}}
.contact-info-item{display:flex;gap:14px;margin-bottom:22px;}
.contact-info-item .ico{width:44px;height:44px;background:var(--bg-light);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:19px;flex-shrink:0;}
.contact-info-item h4{font-size:14.5px;margin-bottom:3px;}
.contact-info-item p, .contact-info-item a{color:var(--muted);font-size:14px;}
.contact-form .form-row{margin-bottom:16px;}
.contact-form label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;}
.contact-form input,.contact-form textarea{width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:8px;font-family:inherit;font-size:14.5px;}
.contact-form textarea{min-height:130px;resize:vertical;}
.map-frame{border-radius:var(--radius);overflow:hidden;margin-top:30px;}
.map-frame iframe{width:100%;height:340px;border:0;display:block;}

/* Footer */
footer.site-footer{background:#0a1c2e;color:#a9bbcf;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;}}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-grid ul li{margin-bottom:10px;font-size:13.5px;}
.footer-grid ul li a:hover{color:#fff;}
.footer-logo{color:#fff;font-size:20px;font-weight:800;margin-bottom:12px;}
.footer-logo img{height:44px;margin-bottom:12px;}
.footer-social a{display:inline-flex;width:36px;height:36px;background:rgba(255,255,255,.08);border-radius:50%;align-items:center;justify-content:center;margin-right:8px;margin-top:14px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:13px;color:#6d84a0;}

/* Alerts */
.alert{padding:13px 16px;border-radius:8px;margin-bottom:18px;font-size:14px;}
.alert-success{background:#e6f7ea;color:#1b6b30;border:1px solid #b8e6c4;}
.alert-danger{background:#fdeaea;color:#a12a2a;border:1px solid #f3bcbc;}

.wa-float{position:fixed;bottom:22px;right:22px;background:#25D366;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;box-shadow:0 8px 20px rgba(0,0,0,.25);z-index:500;color:#fff;}