/* =====================================================
   NIGHTDIJITAL / ULKUM - ANA STİL
   Tema: FULL SİYAH zemin, BEYAZ yazı, Poppins Bold
   ===================================================== */

:root{
  --siyah:#000;
  --beyaz:#fff;
  --gri-koyu:#0a0a0a;
  --gri-orta:#141414;
  --gri-acik:#1f1f1f;
  --gri-yazi:#9a9a9a;
  --kenar:rgba(255,255,255,.08);
  --gecis:cubic-bezier(.77,0,.175,1);
  --gecis-hizli:cubic-bezier(.4,0,.2,1);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;background:#000;}
body{
  font-family:'Poppins',sans-serif;
  font-weight:700;
  background:var(--siyah);
  color:var(--beyaz);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:all .3s var(--gecis);}
a:hover{opacity:.75;}
section{padding:100px 0;position:relative;background:var(--siyah);}

h1,h2,h3,h4,h5,h6{font-weight:700;letter-spacing:-.5px;line-height:1.2;color:var(--beyaz);}
p{color:var(--gri-yazi);font-weight:500;}

.bolum-baslik{text-align:center;margin-bottom:64px;}
.bolum-baslik h2{
  font-size:clamp(2rem,4vw,3.2rem);text-transform:uppercase;
  display:inline-block;position:relative;padding-bottom:22px;letter-spacing:1px;
}
.bolum-baslik h2::after{
  content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);
  width:60px;height:2px;background:var(--beyaz);
}
.bolum-baslik p{max-width:680px;margin:18px auto 0;}

/* ==================== PRELOADER (Animasyonlu Logo) ==================== */
.preloader{
  position:fixed;inset:0;z-index:99999;
  background:#000;
  display:flex;align-items:center;justify-content:center;
  transition:opacity .8s var(--gecis), visibility .8s var(--gecis);
}
.preloader.gizle{opacity:0;visibility:hidden;}
.preloader-icerik{
  display:flex;flex-direction:column;align-items:center;gap:30px;
  animation:preloaderGiris 1.2s var(--gecis) both;
}
@keyframes preloaderGiris{
  0%{opacity:0;transform:scale(.85);}
  100%{opacity:1;transform:scale(1);}
}
.preloader-logo{
  max-width:340px;width:60vw;max-height:200px;
  object-fit:contain;
  filter:brightness(0) invert(1);
  animation:preloaderNabiz 2.2s ease-in-out infinite;
}
@keyframes preloaderNabiz{
  0%, 100%{opacity:1;transform:scale(1);}
  50%{opacity:.65;transform:scale(.96);}
}
.preloader-yazi{
  font-family:'Poppins',sans-serif;font-weight:900;
  font-size:clamp(2rem,5vw,4rem);
  color:#fff;letter-spacing:6px;text-transform:uppercase;
  animation:preloaderNabiz 2.2s ease-in-out infinite;
}
.preloader-cizgi{
  width:240px;height:2px;background:rgba(255,255,255,.12);
  position:relative;overflow:hidden;border-radius:2px;
}
.preloader-cizgi span{
  position:absolute;top:0;left:0;height:100%;width:40%;
  background:linear-gradient(90deg,transparent,#fff,transparent);
  animation:preloaderKay 1.4s linear infinite;
}
@keyframes preloaderKay{
  0%{left:-40%;}
  100%{left:100%;}
}

/* ==================== TOP BAR ==================== */
.top-bar{
  background:var(--siyah);color:var(--beyaz);padding:9px 0;
  font-size:13px;font-weight:500;
  border-bottom:1px solid var(--kenar);
  position:relative;z-index:1001;
}
.top-bar a{color:var(--beyaz);}
.top-bar .iletisim-bilgi{display:flex;gap:22px;flex-wrap:wrap;}
.top-bar .iletisim-bilgi span i{margin-right:6px;opacity:.7;}
.top-bar .sosyal a{margin-left:14px;font-size:14px;opacity:.75;}
.top-bar .sosyal a:hover{opacity:1;}

/* Anasayfada top-bar transparan + slider üstünde (absolute) */
body.anasayfa .top-bar{
  background:transparent;border-bottom:1px solid rgba(255,255,255,.1);
  position:absolute;top:0;left:0;right:0;
  transition:opacity .4s, transform .4s;
}
body.anasayfa .top-bar.gizle{opacity:0;pointer-events:none;transform:translateY(-100%);}

/* İç sayfalarda top-bar fixed (header'ın hemen üstünde) */
body.ic-sayfa .top-bar{
  position:fixed;top:0;left:0;right:0;z-index:1001;
}

/* ==================== HEADER ==================== */
.site-header{
  position:fixed;left:0;width:100%;z-index:999;
  transition:background .5s var(--gecis), top .35s var(--gecis), box-shadow .4s var(--gecis);
}
/* Anasayfa: transparan + slider ile birleşik gradient (üstten siyah aşağıya saydam) */
.site-header.seffaf{
  background:linear-gradient(180deg, rgba(0,0,0,.85) 0%, rgba(0,0,0,.3) 60%, rgba(0,0,0,0) 100%);
  top:42px; /* topbar yüksekliği kadar aşağıda */
}
/* Diğer sayfalar: topbar'ın hemen altında, doğrudan siyah */
.site-header.siyah{
  background:var(--siyah);border-bottom:1px solid var(--kenar);
  top:42px; /* topbar yüksekliği */
}
/* Scroll edildiğinde sabit siyah arka plan devreye girer, en üste yapışır */
.site-header.scrolled{
  background:rgba(0,0,0,.96);backdrop-filter:blur(14px);
  top:0;
  box-shadow:0 8px 30px rgba(0,0,0,.5);
  border-bottom:1px solid var(--kenar);
}
/* İç sayfalarda scroll'da topbar yukarı kayıp gizlensin */
body.ic-sayfa .top-bar{transition:transform .35s var(--gecis), opacity .35s;}
body.ic-sayfa .top-bar.gizle{transform:translateY(-100%);opacity:0;pointer-events:none;}

.navbar{padding:18px 0;}
.navbar-brand{font-size:1.4rem;letter-spacing:2px;text-transform:uppercase;color:var(--beyaz);}
.navbar-brand img{max-height:54px;width:auto;filter:brightness(0) invert(1);}
.navbar-nav .nav-link{
  font-weight:700;color:var(--beyaz)!important;
  text-transform:uppercase;letter-spacing:1.2px;font-size:13px;
  padding:10px 18px!important;position:relative;
}
.navbar-nav .nav-link::before{
  content:'';position:absolute;bottom:6px;left:50%;width:0;height:2px;
  background:var(--beyaz);transition:all .35s var(--gecis);
}
.navbar-nav .nav-link:hover::before,
.navbar-nav .nav-link.active::before{width:60%;left:20%;}
.navbar-nav .nav-link.iletisim-btn{
  background:var(--beyaz);color:var(--siyah)!important;
  margin-left:14px;border-radius:50px;padding:10px 28px!important;
}
.navbar-nav .nav-link.iletisim-btn::before{display:none;}
.navbar-nav .nav-link.iletisim-btn:hover{background:transparent;color:var(--beyaz)!important;outline:2px solid var(--beyaz);}

.navbar-toggler{border:none;padding:0;}
.navbar-toggler:focus{box-shadow:none;}
.toggler-icon{
  display:block;width:30px;height:2px;background:var(--beyaz);
  margin:6px 0;transition:all .3s var(--gecis);
}
.navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(1){transform:rotate(45deg) translate(6px,6px);}
.navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(2){opacity:0;}
.navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(3){transform:rotate(-45deg) translate(6px,-6px);}

/* Sayfaya iç boşluk (header sabit olduğu için) */
body.ic-sayfa{padding-top:0;}

/* ==================== SLIDER (header ile birleşik, 3D scroll) ==================== */
.ana-slider{
  position:relative;height:100vh;min-height:640px;
  overflow:hidden;background:var(--siyah);
  perspective:1400px;perspective-origin:50% 50%;
  transform-style:preserve-3d;
  /* Header & topbar üstte gözüksün diye margin-top:0 */
}
.ana-slider.birlesik{
  /* JS scroll değerine göre transform & opacity değişir (3D) */
  will-change:transform, opacity, filter;
}
.ana-slider .slide{
  position:absolute;inset:0;opacity:0;
  transition:opacity 1.4s var(--gecis), transform 1.4s var(--gecis);
  background-size:cover;background-position:center;
  transform:scale(1.05);
}
.ana-slider .slide.aktif{opacity:1;transform:scale(1);}
.ana-slider .slide::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,.55) 50%, rgba(0,0,0,.85) 100%);
}
.ana-slider .slide-icerik{
  position:relative;z-index:2;height:100%;display:flex;
  align-items:center;justify-content:center;text-align:center;
  color:var(--beyaz);padding:0 20px;
}
.ana-slider .slide-icerik h1{
  font-size:clamp(2.2rem,5.5vw,5rem);
  text-transform:uppercase;letter-spacing:3px;
  opacity:0;transform:translateY(50px);
  transition:all 1.1s var(--gecis) .35s;
}
.ana-slider .slide-icerik p{
  font-size:clamp(1rem,1.4vw,1.25rem);font-weight:500;color:rgba(255,255,255,.85);
  margin:22px auto 32px;max-width:780px;
  opacity:0;transform:translateY(50px);
  transition:all 1.1s var(--gecis) .55s;
}
.ana-slider .slide-icerik .btn-slider{
  display:inline-block;background:transparent;color:var(--beyaz);
  border:2px solid var(--beyaz);padding:15px 42px;
  text-transform:uppercase;letter-spacing:3px;font-size:13px;
  border-radius:50px;
  opacity:0;transform:translateY(50px);
  transition:all 1.1s var(--gecis) .75s, background .3s, color .3s;
}
.ana-slider .slide-icerik .btn-slider:hover{background:var(--beyaz);color:var(--siyah);opacity:1;}
.ana-slider .slide.aktif .slide-icerik h1,
.ana-slider .slide.aktif .slide-icerik p,
.ana-slider .slide.aktif .slide-icerik .btn-slider{
  opacity:1;transform:translateY(0);
}

.slider-nokta{
  position:absolute;bottom:90px;left:50%;transform:translateX(-50%);
  z-index:3;display:flex;gap:10px;
}
.slider-nokta button{
  width:36px;height:3px;background:rgba(255,255,255,.35);
  border:none;cursor:pointer;transition:all .3s;
}
.slider-nokta button.aktif{background:var(--beyaz);width:60px;}
.slider-ok{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:54px;height:54px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.25);color:var(--beyaz);
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .3s;font-size:18px;
}
.slider-ok:hover{background:var(--beyaz);color:var(--siyah);}
.slider-ok.onceki{left:30px;}
.slider-ok.sonraki{right:30px;}

.slider-asagi{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  z-index:3;display:flex;flex-direction:column;align-items:center;
  color:rgba(255,255,255,.7);font-size:11px;letter-spacing:3px;
  text-transform:uppercase;font-weight:600;text-decoration:none;
}
.slider-asagi .cizgi{
  width:1px;height:50px;background:rgba(255,255,255,.5);margin-bottom:10px;
  position:relative;overflow:hidden;
}
.slider-asagi .cizgi::after{
  content:'';position:absolute;top:-100%;left:0;width:100%;height:100%;
  background:var(--beyaz);animation:asagiKay 2s var(--gecis) infinite;
}
@keyframes asagiKay{0%{top:-100%}50%{top:50%}100%{top:100%}}

/* ============ HİZMETLER (Pinned 3D Scroll) ============ */
.hizmetler-bolum{
  background:var(--gri-koyu);
  position:relative;padding:0;
  min-height:300vh;
}
.hizmetler-pin{
  position:sticky;top:0;height:100vh;
  display:flex;flex-direction:column;justify-content:center;
  overflow:hidden;perspective:1600px;
}
.hizmetler-pin .bolum-baslik{margin-bottom:32px;padding-top:30px;}
.hizmet-ilerleme{
  position:absolute;left:50%;bottom:30px;transform:translateX(-50%);
  display:flex;gap:8px;z-index:5;
}
.hizmet-ilerleme span{
  width:36px;height:3px;background:rgba(255,255,255,.2);transition:all .4s var(--gecis);
}
.hizmet-ilerleme span.aktif{background:var(--beyaz);width:60px;}
.hizmet-accordion{
  display:flex;width:100%;height:560px;overflow:hidden;gap:6px;
  transform-style:preserve-3d;
}
.hizmet-accordion .panel{
  flex:1;position:relative;cursor:pointer;overflow:hidden;
  transition:flex .7s var(--gecis);background-size:cover;background-position:center;
  min-width:60px;
  pointer-events:none; /* Hover devre dışı - sadece scroll ile kontrol */
}
.hizmet-accordion .panel.aktif{
  flex:5;pointer-events:auto; /* Sadece aktif panel tıklanabilir */
}
.hizmet-accordion .panel::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,.3) 0%,rgba(0,0,0,.92) 100%);
  transition:all .6s var(--gecis);
}
.hizmet-accordion .panel-icerik{
  position:absolute;bottom:0;left:0;right:0;padding:32px;color:var(--beyaz);z-index:2;
}
.hizmet-accordion .panel-icerik h3{
  font-size:1.4rem;text-transform:uppercase;
  writing-mode:vertical-rl;transform:rotate(180deg);
  white-space:nowrap;transition:all .55s var(--gecis);
  margin-bottom:0;letter-spacing:2px;
}
.hizmet-accordion .panel.aktif .panel-icerik h3{
  writing-mode:horizontal-tb;transform:rotate(0);
}
.hizmet-accordion .panel-icerik p,
.hizmet-accordion .panel-icerik .panel-link{
  opacity:0;transform:translateY(20px);
  transition:all .45s var(--gecis) .25s;
  margin-top:14px;font-weight:500;font-size:14px;color:rgba(255,255,255,.85);
}
.hizmet-accordion .panel.aktif .panel-icerik p,
.hizmet-accordion .panel.aktif .panel-icerik .panel-link{
  opacity:1;transform:translateY(0);
}
.hizmet-accordion .panel-link{
  display:inline-block;color:var(--beyaz);
  border-bottom:1px solid var(--beyaz);padding-bottom:3px;
  text-transform:uppercase;font-size:12px;letter-spacing:1.5px;
}

/* Mobil hizmet kartları */
.hizmet-mobil{display:none;}
.hizmet-mobil .hizmet-kart{
  position:relative;height:280px;margin-bottom:20px;overflow:hidden;
  background-size:cover;background-position:center;
}
.hizmet-mobil .hizmet-kart::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,.2),rgba(0,0,0,.85));
}
.hizmet-mobil .hizmet-kart-icerik{
  position:absolute;bottom:0;left:0;right:0;padding:25px;color:var(--beyaz);
}
.hizmet-mobil .hizmet-kart-icerik h3{font-size:1.2rem;margin-bottom:8px;text-transform:uppercase;}

/* ============ REFERANSLAR (Pinned 3D Tünel + Yatay Kaydırma) ============ */
.referanslar-bolum{
  background:var(--gri-orta);
  position:relative;padding:0;
  min-height:300vh;
}
.ref-pin{
  position:sticky;top:0;height:100vh;
  overflow:hidden;display:flex;flex-direction:column;justify-content:center;
  perspective:1800px;
}
.ref-pin .bolum-baslik{margin-bottom:36px;padding-top:30px;position:relative;z-index:3;}

.ref-tunel{
  position:relative;width:100%;height:560px;
  transform-style:preserve-3d;overflow:visible;
}
.ref-track{
  position:absolute;top:0;left:0;
  display:flex;gap:30px;
  transform-style:preserve-3d;
}
.ref-3d-kart{
  position:relative;width:380px;height:520px;flex-shrink:0;
  display:flex;flex-direction:column;
  background:var(--gri-koyu);overflow:hidden;
  border:1px solid var(--kenar);
  text-decoration:none;color:var(--beyaz);
  transform-style:preserve-3d;
  transition:transform .8s var(--gecis), box-shadow .5s, border-color .4s;
}

/* Üst kısım: görsel — tam ve net göster (kırpılmasın) */
.ref-3d-kart .ref-3d-gorsel{
  position:relative;width:100%;height:240px;
  overflow:hidden;background:#000;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
}
.ref-3d-kart .ref-3d-gorsel img{
  max-width:100%;max-height:100%;
  width:auto;height:auto;
  object-fit:contain;object-position:center;
  display:block;opacity:1;
  transition:transform 1s var(--gecis);
}
.ref-3d-kart .ref-3d-okla{
  position:absolute;top:14px;right:14px;z-index:2;
  width:42px;height:42px;border-radius:50%;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);
  color:var(--beyaz);display:flex;align-items:center;justify-content:center;
  font-size:17px;backdrop-filter:blur(8px);
  transition:all .35s var(--gecis);
}
.ref-3d-kart.merkez .ref-3d-okla{background:#fff;color:#000;}

/* Alt kısım: metin/buton */
.ref-3d-kart .ref-3d-icerik{
  flex:1;padding:26px 26px 28px;
  display:flex;flex-direction:column;
  background:var(--gri-koyu);
}
.ref-3d-kart .ref-3d-icerik h3{
  font-size:1.2rem;text-transform:uppercase;
  letter-spacing:.5px;margin:0 0 10px;
  color:var(--beyaz);line-height:1.3;
}
.ref-3d-kart .ref-3d-icerik p{
  font-size:14px;font-weight:500;
  color:rgba(255,255,255,.7);line-height:1.55;
  margin:0 0 18px;flex:1;
}
.ref-3d-kart .ref-3d-icerik .git{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11px;letter-spacing:2.5px;text-transform:uppercase;
  font-weight:700;color:var(--beyaz);
  padding-bottom:6px;border-bottom:2px solid var(--beyaz);
  align-self:flex-start;
  transition:gap .35s var(--gecis);
}

/* Merkez (aktif) kart vurgusu */
.ref-3d-kart.merkez{
  box-shadow:0 30px 80px rgba(0,0,0,.7);
  border-color:rgba(255,255,255,.25);
}
.ref-3d-kart.merkez .ref-3d-gorsel img{transform:scale(1.04);}
.ref-3d-kart.merkez .ref-3d-icerik .git{gap:14px;}

/* Tünelin altında merkezi "Tüm Referansları Görüntüle" butonu */
.ref-tum-buton{
  display:flex;justify-content:center;
  margin-top:50px;position:relative;z-index:5;
}
.btn-tum-referanslar{
  display:inline-flex;align-items:center;gap:14px;
  background:transparent;color:var(--beyaz);
  border:2px solid var(--beyaz);
  padding:16px 42px;border-radius:50px;
  font-size:13px;font-weight:700;
  letter-spacing:2.5px;text-transform:uppercase;
  text-decoration:none;
  transition:all .4s var(--gecis);
  position:relative;overflow:hidden;
}
.btn-tum-referanslar i{
  font-size:18px;transition:transform .35s var(--gecis);
}
.btn-tum-referanslar::before{
  content:'';position:absolute;top:0;left:-100%;
  width:100%;height:100%;background:var(--beyaz);
  transition:left .4s var(--gecis);z-index:-1;
}
.btn-tum-referanslar:hover{color:var(--siyah);opacity:1;}
.btn-tum-referanslar:hover::before{left:0;}
.btn-tum-referanslar:hover i{transform:translateX(6px);}

.ref-ilerleme{
  position:absolute;left:50%;bottom:30px;transform:translateX(-50%);
  z-index:5;color:var(--beyaz);font-weight:700;letter-spacing:3px;
  font-size:13px;
}
.ref-ilerleme .cubuk{
  width:200px;height:2px;background:rgba(255,255,255,.2);margin-top:12px;
  position:relative;overflow:hidden;
}
.ref-ilerleme .cubuk::after{
  content:'';position:absolute;left:0;top:0;height:100%;background:var(--beyaz);
  width:0%;transition:width .15s linear;
}

/* ============ HİZMET / REFERANS DETAY SAYFASI ============ */
.ref-detay-bolum{background:var(--siyah);padding:90px 0;}

.ref-detay-gorsel{
  position:relative;width:100%;aspect-ratio:16/10;
  overflow:hidden;background:#000;margin-bottom:32px;
  border:1px solid var(--kenar);
}
.ref-detay-gorsel img{
  width:100%;height:100%;object-fit:cover;object-position:center;display:block;
}

.ref-detay-baslik{
  font-size:clamp(1.6rem,2.5vw,2.2rem);
  text-transform:uppercase;letter-spacing:1.5px;
  color:var(--beyaz);margin-bottom:22px;
}
.ref-detay-yazi{
  color:rgba(255,255,255,.78);font-weight:500;
  line-height:1.85;font-size:1.02rem;
}

/* Aside detay kutuları (Proje Detayları / Diğer Referanslar) */
.detay-kutu{
  background:var(--gri-koyu);          /* siyah temalı koyu zemin */
  border:1px solid var(--kenar);
  padding:30px 26px;color:var(--beyaz);
}
.detay-kutu-koyu{background:#000;}
.detay-kutu h3{
  font-size:1rem;text-transform:uppercase;letter-spacing:2px;
  margin:0 0 22px;padding-bottom:14px;
  border-bottom:1px solid rgba(255,255,255,.12);
  color:var(--beyaz);
}
.detay-liste{list-style:none;margin:0;padding:0;}
.detay-liste li{
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;gap:6px;
}
.detay-liste li:last-child{border-bottom:none;}
.detay-liste .etk{
  font-size:11px;letter-spacing:2px;text-transform:uppercase;
  color:rgba(255,255,255,.5);font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
}
.detay-liste .etk i{font-size:14px;opacity:.8;}
.detay-liste strong{
  font-size:15px;font-weight:700;color:var(--beyaz);letter-spacing:.3px;
}
.detay-liste .detay-link{
  font-size:14px;color:var(--beyaz);font-weight:600;
  word-break:break-all;text-decoration:underline;
  text-decoration-color:rgba(255,255,255,.3);
  text-underline-offset:3px;
}
.detay-liste .detay-link:hover{text-decoration-color:#fff;}

.detay-link-liste{list-style:none;margin:0;padding:0;}
.detay-link-liste li{padding:0;border-bottom:1px solid rgba(255,255,255,.1);}
.detay-link-liste li:last-child{border-bottom:none;}
.detay-link-liste li a{
  display:flex;align-items:center;gap:10px;
  padding:14px 0;color:var(--beyaz);font-weight:600;font-size:14px;
  transition:padding .3s var(--gecis), opacity .3s;
}
.detay-link-liste li a:hover{padding-left:8px;opacity:1;}
.detay-link-liste li a i{font-size:14px;opacity:.6;}

.btn-teklif-al{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--beyaz);color:var(--siyah);
  padding:14px 22px;margin-top:24px;
  text-transform:uppercase;letter-spacing:2px;font-size:13px;font-weight:700;
  border-radius:50px;transition:all .35s var(--gecis);
}
.btn-teklif-al:hover{background:transparent;color:var(--beyaz);outline:2px solid var(--beyaz);outline-offset:-2px;opacity:1;}

@media (max-width:991.98px){
  .ref-detay-bolum{padding:60px 0;}
}

/* ============ REFERANSLAR LİSTELEME SAYFASI (/ulkum/referanslar) ============ */
.ref-listesi{background:var(--siyah);padding:90px 0;}
.ref-liste-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:30px;
}
.ref-liste-kart{
  display:block;background:var(--gri-koyu);
  border:1px solid var(--kenar);overflow:hidden;
  color:var(--beyaz);text-decoration:none;
  transition:transform .55s var(--gecis), border-color .4s, box-shadow .5s;
  position:relative;
}
.ref-liste-kart:hover{
  transform:translateY(-10px);
  border-color:rgba(255,255,255,.3);
  box-shadow:0 25px 60px rgba(0,0,0,.5);
  opacity:1;
}
.ref-liste-gorsel{
  position:relative;height:260px;overflow:hidden;
  background:#000;
  display:flex;align-items:center;justify-content:center;
}
.ref-liste-gorsel img{
  max-width:100%;max-height:100%;
  width:auto;height:auto;
  object-fit:contain;object-position:center;
  display:block;opacity:1;
  transition:transform 1s var(--gecis);
}
.ref-liste-kart:hover .ref-liste-gorsel img{transform:scale(1.04);}
.ref-liste-gorsel::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.7));
  pointer-events:none;
}
.ref-liste-okla{
  position:absolute;top:18px;right:18px;z-index:2;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);
  color:var(--beyaz);display:flex;align-items:center;justify-content:center;
  font-size:18px;backdrop-filter:blur(8px);
  transition:all .4s var(--gecis);
}
.ref-liste-kart:hover .ref-liste-okla{
  background:var(--beyaz);color:var(--siyah);
  transform:rotate(-45deg) scale(1.05);
}
.ref-liste-icerik{padding:26px 26px 28px;}
.ref-liste-icerik h3{
  font-size:1.2rem;text-transform:uppercase;letter-spacing:.5px;
  margin:0 0 10px;color:var(--beyaz);line-height:1.3;
}
.ref-liste-icerik p{
  font-size:14px;font-weight:500;color:var(--gri-yazi);
  margin:0 0 16px;line-height:1.55;
}
.ref-liste-meta{
  display:flex;flex-wrap:wrap;gap:16px;
  font-size:12px;color:rgba(255,255,255,.55);
  font-weight:600;text-transform:uppercase;letter-spacing:1px;
  padding-top:14px;border-top:1px solid var(--kenar);
}
.ref-liste-meta span{display:inline-flex;align-items:center;gap:6px;}
.ref-liste-meta span i{font-size:14px;opacity:.7;}

@media (max-width:575.98px){
  .ref-listesi{padding:50px 0;}
  .ref-liste-grid{grid-template-columns:1fr;gap:22px;}
  .ref-liste-icerik{padding:22px;}
  .ref-liste-gorsel{aspect-ratio:16/10;}
}

/* Mobil grid alternatif (pinned scroll mobilde devre dışı) */
.ref-mobil{display:none;}
.ref-mobil .referans-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;}
.ref-mobil .referans-kart{
  position:relative;overflow:hidden;background:var(--siyah);
  aspect-ratio:4/5;cursor:pointer;border:1px solid var(--kenar);
  transition:transform .5s var(--gecis);
}
.ref-mobil .referans-kart img{width:100%;height:100%;object-fit:cover;opacity:.75;}
.ref-mobil .referans-kart::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(0,0,0,.95));}
.ref-mobil .referans-kart .referans-icerik{position:absolute;bottom:0;left:0;right:0;padding:24px;z-index:2;color:#fff;}
.ref-mobil .referans-kart .referans-icerik h3{font-size:1.15rem;text-transform:uppercase;margin-bottom:6px;}
.ref-mobil .referans-kart .referans-icerik p{font-size:13px;color:rgba(255,255,255,.78);}
.referans-kart img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1.2s var(--gecis), opacity .5s;
  opacity:.7;
}
.referans-kart::before{
  content:'';position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,transparent 30%,rgba(0,0,0,.95));
  transition:all .5s var(--gecis);
}
.referans-kart:hover img{transform:scale(1.1);opacity:.9;}
.referans-icerik{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:25px;color:var(--beyaz);
  transform:translateY(40px);transition:transform .5s var(--gecis);
}
.referans-kart:hover .referans-icerik{transform:translateY(0);}
.referans-icerik h3{font-size:1.2rem;text-transform:uppercase;margin-bottom:6px;letter-spacing:1px;}
.referans-icerik p{font-size:13px;font-weight:500;opacity:.85;color:rgba(255,255,255,.8);}
.referans-icerik .git{
  display:inline-block;margin-top:12px;font-size:11px;
  text-transform:uppercase;letter-spacing:2px;
  border-bottom:1px solid var(--beyaz);padding-bottom:3px;
  opacity:0;transition:opacity .3s .2s;
}
.referans-kart:hover .referans-icerik .git{opacity:1;}

/* ============ HAKKIMIZDA (3D paralaks efekti) ============ */
.hakkimizda-bolum{background:var(--siyah);perspective:1800px;overflow:hidden;}
.hakkimizda-bolum .satir{
  display:grid;grid-template-columns:1fr 1fr;gap:60px;
  align-items:center;margin-bottom:80px;
  transform-style:preserve-3d;
  will-change:transform;
}
.hakkimizda-bolum .satir:last-child{margin-bottom:0;}
.hakkimizda-bolum .satir.ters{direction:rtl;}
.hakkimizda-bolum .satir.ters > *{direction:ltr;}

.hakkimizda-bolum .gorsel-kutu{
  position:relative;overflow:hidden;aspect-ratio:5/4;
  border:1px solid var(--kenar);
  transform:perspective(1400px) rotateY(-22deg) translateZ(-100px);
  opacity:0;
  transition:transform 1.2s var(--gecis), opacity 1s var(--gecis);
  will-change:transform;
}
.hakkimizda-bolum .satir.ters .gorsel-kutu{transform:perspective(1400px) rotateY(22deg) translateZ(-100px);}
.hakkimizda-bolum .satir.acik .gorsel-kutu{transform:perspective(1400px) rotateY(0) translateZ(0);opacity:1;}

.hakkimizda-bolum .gorsel-kutu img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1.5s var(--gecis);
}
.hakkimizda-bolum .gorsel-kutu:hover img{transform:scale(1.06);}

.hakkimizda-bolum .yazi-kutu{
  transform:translateY(60px);opacity:0;
  transition:transform 1.2s var(--gecis) .2s, opacity 1s var(--gecis) .2s;
}
.hakkimizda-bolum .satir.acik .yazi-kutu{transform:translateY(0);opacity:1;}

.hakkimizda-bolum .yazi-kutu .uzun-cizgi{
  display:inline-block;width:60px;height:2px;background:var(--beyaz);
  margin-bottom:24px;
}
.hakkimizda-bolum .yazi-kutu h2{
  font-size:clamp(1.8rem,3vw,2.6rem);text-transform:uppercase;margin-bottom:24px;
}

/* ============ SAYFA İÇİ BANNER (Hero) ============ */
.sayfa-banner{
  position:relative;
  min-height:480px;
  padding:200px 0 70px;            /* topbar(42) + header(~80) + nefes alanı */
  background:var(--gri-koyu);color:var(--beyaz);
  display:flex;align-items:center;justify-content:center;
  text-align:center;
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--kenar);
  overflow:hidden;
}
.sayfa-banner::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.85) 0%, rgba(0,0,0,.6) 50%, rgba(0,0,0,.85) 100%);
  z-index:1;
}
.sayfa-banner > .container{position:relative;z-index:2;width:100%;}
.sayfa-banner h1{
  font-size:clamp(2rem,4.2vw,3.6rem);
  text-transform:uppercase;letter-spacing:3px;
  margin:0;
  text-shadow:0 4px 30px rgba(0,0,0,.5);
}
.sayfa-banner .breadcrumb{
  justify-content:center;background:transparent;margin:18px 0 0;
  font-size:14px;letter-spacing:1px;
}
.sayfa-banner .breadcrumb-item,
.sayfa-banner .breadcrumb-item a{color:rgba(255,255,255,.85);font-weight:500;}
.sayfa-banner .breadcrumb-item.active{color:var(--beyaz);}
.sayfa-banner .breadcrumb-item + .breadcrumb-item::before{color:rgba(255,255,255,.5);content:"/";padding:0 10px;}

/* ============ İLETİŞİM ============ */
.iletisim-form-kutu{
  background:var(--gri-koyu);color:var(--beyaz);padding:50px;
  border:1px solid var(--kenar);
}
.iletisim-form-kutu h3{text-transform:uppercase;margin-bottom:25px;letter-spacing:1px;}
.iletisim-form-kutu .form-control{
  background:transparent;border:none;border-bottom:1px solid rgba(255,255,255,.25);
  border-radius:0;color:var(--beyaz);padding:14px 0;font-weight:500;
}
.iletisim-form-kutu .form-control:focus{
  background:transparent;border-color:var(--beyaz);box-shadow:none;color:var(--beyaz);
}
.iletisim-form-kutu .form-control::placeholder{color:rgba(255,255,255,.5);}
.iletisim-form-kutu .btn-gonder{
  background:var(--beyaz);color:var(--siyah);padding:15px 44px;
  text-transform:uppercase;letter-spacing:2px;font-size:13px;
  border:none;border-radius:50px;font-weight:700;
  transition:all .3s;
}
.iletisim-form-kutu .btn-gonder:hover{background:transparent;color:var(--beyaz);outline:2px solid var(--beyaz);}
.iletisim-bilgi-kutu{padding:0 10px;}
.iletisim-bilgi-kutu h2{margin-bottom:18px;}
.iletisim-bilgi-kutu .bilgi-item{
  display:flex;gap:18px;align-items:flex-start;margin-bottom:30px;
}
.iletisim-bilgi-kutu .bilgi-item i{
  width:50px;height:50px;background:var(--beyaz);color:var(--siyah);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  font-size:18px;
}
.iletisim-bilgi-kutu .bilgi-item h4{font-size:14px;text-transform:uppercase;margin-bottom:5px;letter-spacing:1px;}
.iletisim-bilgi-kutu .bilgi-item p{margin:0;}
.iletisim-bilgi-kutu .bilgi-item p, .iletisim-bilgi-kutu .bilgi-item a{color:var(--gri-yazi);font-weight:500;}

/* ============ DETAY KARTLAR ============ */
.detay-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;}
.detay-kart{
  background:var(--gri-koyu);overflow:hidden;border:1px solid var(--kenar);
  transition:transform .5s var(--gecis), border-color .5s;
}
.detay-kart:hover{transform:translateY(-8px);border-color:rgba(255,255,255,.3);}
.detay-kart .kart-gorsel{height:240px;overflow:hidden;}
.detay-kart .kart-gorsel img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--gecis);}
.detay-kart:hover .kart-gorsel img{transform:scale(1.08);}
.detay-kart .kart-icerik{padding:25px;}
.detay-kart .kart-icerik h3{font-size:1.15rem;text-transform:uppercase;margin-bottom:10px;}
.detay-kart .kart-icerik h3 a{color:var(--beyaz);}
.detay-kart .kart-icerik p{font-size:14px;}
.detay-kart .kart-link{
  display:inline-block;margin-top:14px;font-size:12px;letter-spacing:2px;
  text-transform:uppercase;border-bottom:2px solid var(--beyaz);padding-bottom:3px;
  color:var(--beyaz);
}

/* ============ BUTONLAR ============ */
.btn-cizgi-beyaz{
  display:inline-block;background:transparent;color:var(--beyaz);
  border:2px solid var(--beyaz);padding:13px 38px;border-radius:50px;
  text-transform:uppercase;letter-spacing:2px;font-size:13px;font-weight:700;
  transition:all .3s;
}
.btn-cizgi-beyaz:hover{background:var(--beyaz);color:var(--siyah);opacity:1;}
.btn-dolu-beyaz{
  background:var(--beyaz);color:var(--siyah);padding:13px 38px;border-radius:50px;
  text-transform:uppercase;letter-spacing:2px;font-size:13px;font-weight:700;border:none;
}

/* ============ FOOTER ============ */
.site-footer{
  background:var(--siyah);color:var(--beyaz);padding-top:90px;
  position:relative;overflow:hidden;border-top:1px solid var(--kenar);
}
.site-footer .baski-arka{
  position:absolute;left:50%;top:38%;transform:translate(-50%,-50%);
  font-size:clamp(36px,10vw,140px);font-weight:900;
  color:rgba(255,255,255,.045);letter-spacing:5px;
  text-transform:uppercase;white-space:nowrap;pointer-events:none;z-index:0;
  max-width:100%;
}

/* NightDigital footer logosu */
.footer-night-logo{
  display:inline-block;margin-top:18px;padding:10px 14px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  border-radius:6px;transition:all .3s var(--gecis);
}
.footer-night-logo img{
  max-height:40px;width:auto;display:block;
  filter:brightness(0) invert(1);opacity:.85;
  transition:opacity .3s;
}
.footer-night-logo:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.25);opacity:1;}
.footer-night-logo:hover img{opacity:1;}
.site-footer > .container{position:relative;z-index:1;}
.site-footer h5{
  font-size:14px;text-transform:uppercase;letter-spacing:2px;
  margin-bottom:24px;padding-bottom:14px;
  border-bottom:1px solid rgba(255,255,255,.12);color:var(--beyaz);
}
.site-footer p,.site-footer li,.site-footer a{
  color:rgba(255,255,255,.65);font-weight:500;font-size:14px;
}
.site-footer a:hover{color:var(--beyaz);opacity:1;}
.site-footer ul{list-style:none;padding:0;}
.site-footer ul li{margin-bottom:10px;}
.footer-iletisim li{display:flex;gap:10px;align-items:flex-start;}
.footer-iletisim li i{margin-top:5px;flex-shrink:0;}
.footer-sosyal{display:flex;gap:12px;margin-top:18px;}
.footer-sosyal a{
  width:40px;height:40px;border:1px solid rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;color:var(--beyaz);transition:all .3s;
}
.footer-sosyal a:hover{background:var(--beyaz);color:var(--siyah);}
.footer-alt{
  margin-top:60px;padding:24px 0;border-top:1px solid rgba(255,255,255,.08);
  text-align:center;font-size:13px;
}
.footer-alt span{color:rgba(255,255,255,.45);}

/* ============ WP BUTON ============ */
.wp-buton{
  position:fixed;right:24px;bottom:24px;z-index:999;
  width:56px;height:56px;background:#25D366;color:var(--beyaz);
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:26px;box-shadow:0 8px 24px rgba(37,211,102,.4);
  transition:transform .3s;
}
.wp-buton:hover{transform:scale(1.08);color:var(--beyaz);opacity:1;}

/* ============ SCROLL ANİMASYONLARI ============ */
.fade-in{opacity:0;transform:translateY(40px);transition:all 1s var(--gecis);}
.fade-in.gor{opacity:1;transform:translateY(0);}
.fade-left{opacity:0;transform:translateX(-50px);transition:all 1s var(--gecis);}
.fade-left.gor{opacity:1;transform:translateX(0);}
.fade-right{opacity:0;transform:translateX(50px);transition:all 1s var(--gecis);}
.fade-right.gor{opacity:1;transform:translateX(0);}
.zoom-in{opacity:0;transform:scale(.9);transition:all 1s var(--gecis);}
.zoom-in.gor{opacity:1;transform:scale(1);}

.scroll-yukari{
  position:fixed;left:24px;bottom:24px;z-index:998;
  width:46px;height:46px;background:var(--beyaz);color:var(--siyah);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;border:none;
}
.scroll-yukari.gor{opacity:1;visibility:visible;}
.scroll-yukari:hover{background:var(--siyah);color:var(--beyaz);outline:2px solid var(--beyaz);}

/* Bootstrap koyu tema override (alert vs.) */
.alert-success{background:rgba(40,167,69,.15);color:#7eea9c;border:1px solid rgba(40,167,69,.4);}
.alert-warning{background:rgba(255,193,7,.15);color:#ffe58a;border:1px solid rgba(255,193,7,.4);}
.alert-danger{background:rgba(220,53,69,.15);color:#ffa1ac;border:1px solid rgba(220,53,69,.4);}

/* ============ RESPONSIVE ============ */
@media (max-width: 991.98px){
  section{padding:64px 0;}
  .ana-slider{height:100vh;min-height:560px;}
  .hizmet-accordion{display:none;}
  .hizmet-mobil{display:block;}
  /* Mobilde pinning kapat */
  .hizmetler-bolum{min-height:auto;padding:64px 0;}
  .hizmetler-pin{position:relative;top:auto;height:auto;display:block;perspective:none;}
  .hizmet-ilerleme{display:none;}
  .referanslar-bolum{min-height:auto;padding:64px 0;}
  .ref-pin{position:relative;top:auto;height:auto;display:block;perspective:none;}
  .ref-tunel{display:none;}
  .ref-ilerleme{display:none;}
  .ref-mobil{display:block;}
  .hakkimizda-bolum .satir{grid-template-columns:1fr;gap:30px;margin-bottom:50px;}
  .hakkimizda-bolum .satir.ters{direction:ltr;}
  .hakkimizda-bolum .gorsel-kutu,
  .hakkimizda-bolum .satir.ters .gorsel-kutu{transform:translateY(40px);}
  .hakkimizda-bolum .satir.acik .gorsel-kutu{transform:translateY(0);}
  .referans-kart:nth-child(odd),
  .referans-kart:nth-child(even){transform:translateY(40px) scale(.95);}
  .referans-kart.acik{transform:translateY(0) scale(1);}
  .navbar-collapse{
    background:var(--siyah);padding:20px;margin-top:10px;
    border-top:1px solid var(--kenar);
  }
  .navbar-nav .nav-link.iletisim-btn{margin-left:0;margin-top:10px;display:inline-block;}
  .iletisim-form-kutu{padding:30px 25px;}
  .top-bar .iletisim-bilgi{justify-content:center;font-size:12px;gap:14px;}
  .top-bar .sosyal{display:none;}
  .slider-ok{display:none;}
  body.anasayfa .top-bar{display:none;}
  body.ic-sayfa .top-bar{display:none;}
  .site-header.seffaf,
  .site-header.siyah{top:0;}
  .sayfa-banner{padding:140px 0 50px;min-height:380px;}
}
@media (max-width: 575.98px){
  .bolum-baslik{margin-bottom:44px;}
  .site-footer{padding-top:60px;}
}