/* ==========================================================================
   Tamkoçlar Çelik Mühendislik A.Ş. — Ana Sayfa
   Marka: bordo #8B231D · lacivert #332C63
   ========================================================================== */

:root{
  --kirmizi:      #8B231D;
  --kirmizi-acik: #B3312A;
  --lacivert:     #332C63;
  --gece:         #0D0E11;
  --gece-2:       #16181D;
  --kum:          #F5F3F0;
  --beyaz:        #FFFFFF;
  --gri:          #6E6E75;
  --cizgi:        rgba(255,255,255,.14);

  --wrap: 1280px;
  --head: 82px;

  /* Yuvarlak hatlı çift: başlıklarda geometrik-yuvarlak Poppins,
     metinde yumuşak hatlı Nunito Sans. İkisi de Türkçe karakterleri tam destekler. */
  --font-d: "Poppins", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  --font-b: "Nunito Sans", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  margin:0;
  font-family:var(--font-b);
  font-size:17px;
  line-height:1.65;
  color:#22232A;
  background:var(--beyaz);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--font-d); margin:0; line-height:1.05; font-weight:700; }

.wrap{ width:min(100% - 48px, var(--wrap)); margin-inline:auto; }

.skip{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--kirmizi); color:#fff; padding:12px 20px;
}
.skip:focus{ left:12px; top:12px; }

/* ---------- Reveal animasyonu ----------
   Gizleme yalnızca JS varken uygulanır (html.js). JS kapalıysa
   veya bir hata olursa içerik her hâlükârda görünür kalır. */
.js .rv{
  opacity:0; transform:translateY(26px);
  transition:opacity .8s var(--ease), transform .8s var(--ease);
  transition-delay:var(--d, 0ms);
}
.js .rv.in{ opacity:1; transform:none; }

@media (prefers-reduced-motion:reduce){
  .js .rv{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* ==========================================================================
   ÜST BAR
   ========================================================================== */
.topbar{
  background:var(--lacivert);
  color:rgba(255,255,255,.8);
  font-size:13.5px;
  letter-spacing:.02em;
  position:relative; z-index:60;
}
.topbar__in{
  display:flex; align-items:center; gap:18px;
  height:40px;
}
.topbar__item{ white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
a.topbar__item:hover{ color:#fff; }
.topbar__sep{ width:1px; height:16px; background:rgba(255,255,255,.22); flex:none; }
.topbar__langs{ margin-left:auto; display:flex; gap:2px; flex:none; }
.topbar__langs a{
  padding:2px 9px; font-weight:600; font-size:12.5px;
  border-radius:2px; color:rgba(255,255,255,.6);
}
.topbar__langs a.is-active{ background:var(--kirmizi); color:#fff; }

@media (max-width:900px){
  .topbar__item:first-child, .topbar__sep{ display:none; }
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(0,0,0,.07);
  transition:box-shadow .3s, background .3s;
}
.header.is-stuck{ box-shadow:0 10px 34px rgba(0,0,0,.09); }

.header__in{
  display:flex; align-items:center; gap:28px;
  height:var(--head);
}

.logo img{ height:50px; width:auto; }

/* --- Navigasyon --- */
.nav__list{
  display:flex; align-items:center; gap:4px;
  list-style:none; margin:0; padding:0;
}
.nav__list > li{ position:relative; }
.nav__list > li > a{
  display:block; padding:10px 14px;
  font-family:var(--font-d);
  font-size:14.5px; font-weight:600;
  letter-spacing:.02em; text-transform:uppercase;
  color:#2A2B33;
  position:relative;
}
.nav__list > li > a::after{
  content:""; position:absolute; left:14px; right:14px; bottom:4px;
  height:2px; background:var(--kirmizi);
  transform:scaleX(0); transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav__list > li:hover > a::after,
.nav__list > li > a.is-active::after{ transform:scaleX(1); }
.nav__list > li > a.is-active{ color:var(--kirmizi); }

.sub{
  position:absolute; top:100%; left:0; min-width:250px;
  list-style:none; margin:0; padding:8px 0;
  background:var(--beyaz);
  border-top:3px solid var(--kirmizi);
  box-shadow:0 22px 44px rgba(0,0,0,.14);
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:.25s var(--ease);
}
.has-sub:hover > .sub, .has-sub:focus-within > .sub{
  opacity:1; visibility:visible; transform:none;
}
.sub a{
  display:block; padding:10px 20px;
  font-size:15.5px; color:#3A3B44;
  border-left:3px solid transparent;
  transition:.2s;
}
.sub a:hover{ background:var(--kum); border-left-color:var(--kirmizi); color:var(--kirmizi); }

/* --- Telefon --- */
.tel{
  margin-left:auto; text-align:right; line-height:1.2; flex:none;
  padding-left:22px; border-left:1px solid rgba(0,0,0,.1);
}
.tel__k{ display:block; font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--gri); }
.tel__n{
  display:block; font-family:var(--font-d); font-weight:700;
  font-size:18px; color:var(--kirmizi); letter-spacing:.01em;
}

/* --- Burger --- */
.burger{
  display:none; width:44px; height:40px; flex:none;
  background:none; border:0; cursor:pointer; padding:9px 8px;
}
.burger span{
  display:block; height:2px; background:#22232A; border-radius:2px;
  transition:.3s var(--ease);
}
.burger span + span{ margin-top:6px; }
.burger[aria-expanded="true"] span:nth-child(1){ transform:translateY(8px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.burger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-8px) rotate(-45deg); }

@media (max-width:1100px){
  /* Header'a göre konumlanır: sayfa kayıp üst bar gidince de hizalı kalır */
  .nav{
    position:absolute; top:100%; left:0; right:0;
    background:var(--beyaz);
    border-bottom:1px solid rgba(0,0,0,.1);
    box-shadow:0 20px 40px rgba(0,0,0,.12);
    max-height:0; overflow:hidden;
    transition:max-height .4s var(--ease);
  }
  .nav.is-open{ max-height:calc(100svh - var(--head)); overflow-y:auto; }
  .nav__list{ flex-direction:column; align-items:stretch; gap:0; padding:8px 24px 24px; }
  .nav__list > li > a{ padding:14px 0; border-bottom:1px solid rgba(0,0,0,.07); font-size:20px; }
  .nav__list > li > a::after{ display:none; }
  .sub{
    position:static; opacity:1; visibility:visible; transform:none;
    box-shadow:none; border-top:0; border-left:2px solid var(--kum);
    padding:4px 0 10px 14px; min-width:0;
  }
  .sub a{ padding:8px 10px; border-left:0; }
  .burger{ display:block; }
  .tel{ display:none; }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position:relative;
  /* Üst bar (40px) + header (83px) çıkarılınca ilk ekranı tam doldurur */
  min-height:clamp(540px, calc(100svh - 123px), 900px);
  display:flex; flex-direction:column; justify-content:center;
  background:var(--gece);
  color:#fff;
  overflow:hidden;
  padding:40px 0 130px;
}

/* SABİT VİDEO: ekrana sabitlenir, sayfa üzerinden kayar.
   Hero geçildiğinde alttaki bölümler (hepsi opak zeminli) videonun üstünü örter. */
.hero__media{ position:fixed; inset:0; z-index:0; }

.hero__video{
  width:100%; height:100%;
  object-fit:cover; object-position:center;
  filter:saturate(.7) contrast(1.08);
}

/* Video üzerindeki katman — degrade yok, her yerde eşit yoğunlukta düz bir tül.
   Videonun kadrajı olduğu gibi görünür. Yazıların okunması için gereken
   kontrast, buradaki tek düzeyden ve .hero__in üzerindeki gölgeden gelir.
   Videoyu tamamen çıplak istersiniz: aşağıdaki değeri 0'a indirin. */
.hero__scrim{
  position:absolute; inset:0;
  background:rgba(9,10,13,.42);
}

/* İnce teknik ızgara — çelik/mühendislik dokunuşu */
.hero__grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:88px 88px;
  mask-image:radial-gradient(120% 90% at 78% 22%, #000 0%, transparent 68%);
  -webkit-mask-image:radial-gradient(120% 90% at 78% 22%, #000 0%, transparent 68%);
}

/* Sahne kabı — scrollytelling kapalıyken yok sayılır, açıkken yapışkan olur */
.hero__stage{ display:contents; }
.hero__panel{ position:relative; z-index:2; }
/* Katman inceldiği için okunabilirlik yazının kendi gölgesinden gelir */
.hero__in, .hero__steps{
  position:relative; z-index:2;
  text-shadow:0 2px 18px rgba(0,0,0,.72), 0 1px 4px rgba(0,0,0,.5);
}

/* ---------- SCROLLYTELLING (yalnızca masaüstü + hareket açık) ---------- */
.story-on .hero{
  height:600vh;            /* 5 ekranlık sarma payı */
  min-height:0;
  display:block;
  padding:0;
  /* ÖNEMLİ: overflow:hidden, içerideki position:sticky'yi çalışmaz hâle
     getirir (hero kendi kaydırma kabı olur). Sahne için kapatılmalı. */
  overflow:visible;
}
/* Yapışma noktası, sahnenin akıştaki doğal konumuyla (üst bar 40 + header 83)
   aynı olmalı; aksi hâlde kaydırma başlamadan alttan taşar ve şerit ekran
   dışında kalır. Arkadaki video zaten position:fixed olduğu için üstte kalan
   boşlukta da video görünür, kesinti olmaz. */
.story-on .hero__stage{
  display:flex; flex-direction:column; justify-content:center;
  position:sticky; top:123px;
  height:calc(100svh - 123px);
  padding:0 0 130px;       /* altta rakam şeridi payı */
  overflow:hidden;
}
.story-on .hero__panel{
  min-height:clamp(260px, 34vh, 420px);
}

/* Giriş metni: sarma başlayınca yukarı süzülür */
.story-on .hero__in{
  transition:opacity .55s var(--ease), transform .55s var(--ease);
}
.story-on .hero__in.is-out{
  opacity:0; transform:translateY(-34px); pointer-events:none;
}

/* Sahne künyeleri — giriş metniyle aynı noktada üst üste durur */
.hero__steps{ display:none; }
.story-on .hero__steps{
  display:block;
  position:absolute; inset:0; z-index:3;
  pointer-events:none;
}
.step{
  position:absolute; left:0; top:0; max-width:660px;
  opacity:0; transform:translateY(30px);
  transition:opacity .6s var(--ease), transform .6s var(--ease);
}
.step.is-active{ opacity:1; transform:none; }

.step__no{
  display:block; margin-bottom:16px;
  font-family:var(--font-d); font-size:14px; font-weight:600;
  letter-spacing:.28em; color:rgba(255,255,255,.5);
}
.step__cat{
  display:flex; align-items:center; gap:0; margin-bottom:10px;
  font-family:var(--font-d); font-size:15px; font-weight:600;
  letter-spacing:.22em; text-transform:uppercase;
  color:var(--kirmizi-acik);
}
.step__cat::before{ content:none; }
.step__title{
  font-size:clamp(31px, 3.5vw, 55px);
  text-transform:uppercase; letter-spacing:-.015em;
  color:#fff; margin:0 0 12px;
}
.step__loc{
  margin:0; font-size:18px; letter-spacing:.04em;
  color:rgba(255,255,255,.72);
}

/* İlerleme çubuğu */
.rail{ display:none; }
.story-on .rail{ display:none; }
.rail__fill{
  position:absolute; left:0; top:0; width:100%; height:0;
  background:var(--kirmizi-acik);
}
.story-on .scroll{ display:none; }

.hero__kicker{
  display:flex; align-items:center; gap:0;
  margin:0 0 18px;
  font-family:var(--font-d);
  font-size:16px; font-weight:600;
  letter-spacing:.24em; text-transform:uppercase;
  color:rgba(255,255,255,.82);
}
/* Kırmızı süs çizgileri kaldırıldı (istek üzerine). Ölçüyü bozmamak için
   öğe duruyor ama görünmüyor; geri istenirse background'ı geri verin. */
.hero__bar{ display:none; }

.hero__title{
  font-size:clamp(34px, 4.3vw, 64px);
  letter-spacing:-.015em;
  text-transform:uppercase;
  margin:0 0 22px;
  text-wrap:balance;
}
.hero__title span{ display:block; }
.hero__title .accent{
  color:transparent;
  /* Katman inceldiği için kontur daha belirgin olmalı, yoksa aydınlık
     kadrajlarda yazı kayboluyor. */
  -webkit-text-stroke:2px rgba(255,255,255,.95);
  paint-order:stroke fill;
  position:relative;
}
.hero__title .accent::before{ content:none; }

.hero__lead{
  max-width:52ch;
  margin:0 0 32px;
  font-size:clamp(16.5px, 1.2vw, 19px);
  color:rgba(255,255,255,.82);
}

.hero__cta{ display:flex; flex-wrap:wrap; gap:14px; }

/* --- Butonlar --- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:15px 32px;
  font-family:var(--font-d); font-size:15px; font-weight:600;
  letter-spacing:.06em; text-transform:uppercase;
  border:2px solid transparent;
  transition:.28s var(--ease);
}
.btn--primary{ background:var(--kirmizi); color:#fff; border-color:var(--kirmizi); }
.btn--primary:hover{ background:var(--kirmizi-acik); border-color:var(--kirmizi-acik); transform:translateY(-2px); }
.btn--ghost{ color:#fff; border-color:rgba(255,255,255,.42); }
.btn--ghost:hover{ background:#fff; color:var(--gece); border-color:#fff; transform:translateY(-2px); }

/* --- Hero alt şerit --- */
.hero__strip{
  position:absolute; left:0; right:0; bottom:0; z-index:2;
  border-top:1px solid var(--cizgi);
  background:rgba(9,10,13,.42);
  backdrop-filter:blur(6px);
}
.hero__strip-in{ display:grid; grid-template-columns:repeat(4,1fr); }
.stat{ padding:24px 26px 24px 0; }
.hero__strip-in .stat + .stat{ padding-left:26px; border-left:1px solid var(--cizgi); }
.stat b{
  display:block; font-family:var(--font-d); font-weight:700;
  font-size:25px; line-height:1; color:#fff; letter-spacing:.01em;
}
.stat span{ display:block; margin-top:6px; font-size:14px; color:rgba(255,255,255,.62); }
.stat--muted b{ color:var(--kirmizi-acik); }

/* --- Scroll göstergesi --- */
.scroll{
  position:absolute; right:34px; bottom:132px; z-index:3;
  display:flex; flex-direction:column; align-items:center; gap:12px;
  color:rgba(255,255,255,.7);
}
.scroll__t{
  font-family:var(--font-d); font-size:13px;
  letter-spacing:.22em; text-transform:uppercase;
  writing-mode:vertical-rl;
}
.scroll__l{ width:1px; height:64px; background:rgba(255,255,255,.3); position:relative; overflow:hidden; }
.scroll__l::after{
  content:""; position:absolute; inset:0;
  background:var(--kirmizi-acik);
  animation:sc 2.1s var(--ease) infinite;
}
@keyframes sc{ 0%{ transform:translateY(-100%); } 60%,100%{ transform:translateY(100%); } }

@media (max-width:1024px){
  .scroll{ display:none; }
  /* Şerit burada 2 satıra dönüyor; alt boşluk şeridi tam karşılamalı */
  .hero{ padding:40px 0 160px; }
  .hero__strip-in{ grid-template-columns:repeat(2,1fr); }
  .hero__strip-in .stat:nth-child(3),
  .hero__strip-in .stat:nth-child(4){ border-top:1px solid var(--cizgi); }
  .hero__strip-in .stat:nth-child(3){ border-left:0; padding-left:0; }
  .stat{ padding:12px 14px 12px 0; }
  .hero__strip-in .stat + .stat{ padding-left:14px; }
  .stat b{ font-size:19px; }
  .stat span{ margin-top:3px; font-size:12.5px; }
}
@media (max-width:560px){
  .hero__title .accent{ -webkit-text-stroke-width:1.4px; }
  .btn{ flex:1 1 100%; padding:14px 28px; }
  .hero__lead{ margin-bottom:26px; }
}

/* ==========================================================================
   BÖLÜMLER
   ========================================================================== */
/* Sabit videonun üstünde kalmaları için: hepsi opak zeminli ve videodan yukarıda */
.sec, .footer{ position:relative; z-index:1; }

.sec{ padding:clamp(72px, 9vw, 130px) 0; }
.sec--light{ background:var(--kum); }
.sec--dark{ background:var(--gece); color:#fff; }

.eyebrow{
  display:flex; align-items:center; gap:0;
  margin:0 0 16px;
  font-family:var(--font-d); font-size:12.5px; font-weight:600;
  letter-spacing:.2em; text-transform:uppercase;
  color:var(--kirmizi);
}
.sec--dark .eyebrow{ color:var(--kirmizi-acik); }

.sec__head{ max-width:760px; margin-bottom:56px; }
.sec__head--row{
  max-width:none; display:flex; align-items:flex-end;
  justify-content:space-between; gap:32px; flex-wrap:wrap;
}
.sec__title{
  font-size:clamp(27px, 2.9vw, 43px);
  text-transform:uppercase; letter-spacing:-.01em;
  margin:0 0 18px;
}
.sec__lead{ margin:0; color:var(--gri); font-size:18px; }
.sec--dark .sec__lead{ color:rgba(255,255,255,.66); }

.link-more{
  font-family:var(--font-d); font-size:15px; font-weight:600;
  letter-spacing:.07em; text-transform:uppercase;
  border-bottom:2px solid var(--kirmizi-acik);
  padding-bottom:5px;
}
.link-more span{ display:inline-block; transition:transform .3s var(--ease); }
.link-more:hover span{ transform:translateX(6px); }

/* --- Kartlar --- */
.cards{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:rgba(0,0,0,.1); }
.card{
  background:var(--beyaz);
  padding:40px 32px 44px;
  position:relative;
  transition:.35s var(--ease);
}
.card::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:3px;
  background:var(--kirmizi); transform:scaleX(0); transform-origin:left;
  transition:transform .4s var(--ease);
}
.card:hover{ transform:translateY(-6px); box-shadow:0 26px 50px rgba(0,0,0,.1); }
.card:hover::after{ transform:scaleX(1); }
.card__no{
  font-family:var(--font-d); font-size:15px; font-weight:700;
  letter-spacing:.2em; color:var(--kirmizi);
}
.card h3{
  font-size:23px; text-transform:uppercase;
  margin:12px 0 14px; color:var(--lacivert);
}
.card p{ margin:0; font-size:16px; color:var(--gri); }

@media (max-width:1000px){ .cards{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .cards{ grid-template-columns:1fr; } }

/* --- Projeler --- */
.projects{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  grid-auto-rows:262px;
  gap:16px;
}
.proj{
  position:relative; overflow:hidden;
  background:var(--gece-2);
  display:block;
}
.proj--big{ grid-column:span 2; grid-row:span 2; }
.proj img{
  width:100%; height:100%; object-fit:cover;
  filter:grayscale(.35) brightness(.78);
  transition:transform .8s var(--ease), filter .6s var(--ease);
}
.proj::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(to top, rgba(9,10,13,.9) 0%, rgba(9,10,13,.1) 55%);
}
.proj:hover img{ transform:scale(1.06); filter:grayscale(0) brightness(.9); }

.proj__body{ position:absolute; left:0; right:0; bottom:0; z-index:2; padding:28px; }
.proj__tag{
  display:inline-block; margin-bottom:8px;
  font-family:var(--font-d); font-size:13px; font-weight:600;
  letter-spacing:.18em; text-transform:uppercase;
  color:var(--kirmizi-acik);
}
.proj__body h3{
  font-size:clamp(18px, 1.6vw, 25px);
  text-transform:uppercase; color:#fff;
}
.proj--big .proj__body{ padding:34px; }

@media (max-width:900px){
  .projects{ grid-template-columns:repeat(2,1fr); grid-auto-rows:210px; }
  .proj--big{ grid-column:span 2; grid-row:span 1; }
}
@media (max-width:560px){
  .projects{ grid-template-columns:1fr; }
  .proj--big{ grid-column:span 1; }
}

/* --- İletişim --- */
.cta{ background:var(--lacivert); color:#fff; }
.cta .sec__lead{ color:rgba(255,255,255,.7); }
.cta__in{
  display:grid; grid-template-columns:1fr 1fr;
  gap:56px; align-items:center;
}
.cta__box{ background:rgba(0,0,0,.2); border:1px solid rgba(255,255,255,.14); }
.cta__row{
  display:flex; align-items:baseline; gap:20px;
  padding:22px 28px;
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:background .25s;
}
.cta__row:last-child{ border-bottom:0; }
a.cta__row:hover{ background:rgba(255,255,255,.06); }
.cta__row span{
  flex:none; width:80px;
  font-family:var(--font-d); font-size:14px;
  letter-spacing:.16em; text-transform:uppercase;
  color:rgba(255,255,255,.55);
}
.cta__row b{ font-family:var(--font-d); font-size:22px; font-weight:600; letter-spacing:.01em; }

/* Flex öğesi varsayılan olarak min-content'in altına inemez; uzun adres/telefon
   satırı dar ekranda kutuyu taşırıyordu. */
.cta__row b{ min-width:0; overflow-wrap:anywhere; }

@media (max-width:900px){ .cta__in{ grid-template-columns:1fr; gap:36px; } }
@media (max-width:560px){
  .cta__row{ flex-direction:column; align-items:flex-start; gap:6px; padding:18px 20px; }
  .cta__row span{ width:auto; }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer{ background:var(--gece); color:rgba(255,255,255,.62); padding:72px 0 0; }
.footer__in{
  display:grid; grid-template-columns:1fr 2fr; gap:56px;
  padding-bottom:56px;
}
.footer__brand img{ width:190px; margin-bottom:20px; }
.footer__brand p{
  margin:0; font-family:var(--font-d); font-size:16px;
  letter-spacing:.03em; color:rgba(255,255,255,.8);
}
.footer__nav{ display:grid; grid-template-columns:repeat(3,1fr); gap:32px; }
.footer__nav h4{
  font-size:15px; text-transform:uppercase; letter-spacing:.1em;
  color:#fff; margin-bottom:16px;
}
.footer__nav a{ display:block; padding:6px 0; font-size:15.5px; transition:.2s; }
.footer__nav a:hover{ color:var(--kirmizi-acik); padding-left:6px; }

.footer__bottom{
  display:flex; justify-content:space-between; align-items:center;
  flex-wrap:wrap; gap:12px;
  padding:22px 0; font-size:14px;
  border-top:1px solid rgba(255,255,255,.1);
}

@media (max-width:820px){
  .footer__in{ grid-template-columns:1fr; gap:40px; }
  .footer__nav{ grid-template-columns:repeat(2,1fr); }
}

/* ==========================================================================
   İÇ SAYFALAR
   ========================================================================== */

/* --- Sayfa başlığı --- */
.phero{
  position:relative; z-index:1;
  background:var(--gece);
  color:#fff;
  padding:clamp(64px, 8vw, 104px) 0 clamp(48px, 6vw, 76px);
  overflow:hidden;
}
/* Arka plan görseli elemanın kendisine, HTML'deki inline style ile verilir.
   NOT: CSS degiskeni (var(--bg)) icinde goreli yol kullanilamaz — tarayici
   onu HTML'e degil, stil dosyasinin konumuna gore cozer. */
.phero{
  background-size:cover; background-position:center; background-repeat:no-repeat;
}
.phero::after{
  content:""; position:absolute; inset:0;
  background:
    linear-gradient(100deg, rgba(9,10,13,.93) 0%, rgba(9,10,13,.8) 46%, rgba(9,10,13,.62) 100%),
    linear-gradient(to top, rgba(9,10,13,.92) 0%, rgba(9,10,13,.2) 60%);
}
.phero > *{ position:relative; z-index:2; }

.crumb{
  display:flex; flex-wrap:wrap; align-items:center; gap:9px;
  margin-bottom:20px;
  font-size:14px; color:rgba(255,255,255,.6);
}
.crumb a:hover{ color:#fff; text-decoration:underline; }
.crumb span{ color:rgba(255,255,255,.32); }
.crumb b{ color:var(--kirmizi-acik); font-weight:600; }

.phero__title{
  font-size:clamp(29px, 3.4vw, 50px);
  text-transform:uppercase; letter-spacing:-.015em;
  margin:0;
}
.phero__lead{
  margin:18px 0 0; max-width:62ch;
  font-size:18px; color:rgba(255,255,255,.75);
}

/* --- Sayfa gövdesi --- */
.page{ position:relative; z-index:1; background:var(--beyaz); padding:clamp(56px, 7vw, 96px) 0; }
.page__grid{
  display:grid; grid-template-columns:274px 1fr; gap:clamp(36px, 5vw, 76px);
  align-items:start;
}

/* --- Yan menü --- */
.side{ position:sticky; top:104px; }
.side__t{
  font-family:var(--font-d); font-size:15px; font-weight:600;
  letter-spacing:.2em; text-transform:uppercase;
  color:var(--kirmizi); margin-bottom:14px;
}
.side__nav{ display:flex; flex-direction:column; border-top:1px solid rgba(0,0,0,.1); }
.side__nav a{
  padding:13px 16px 13px 0;
  border-bottom:1px solid rgba(0,0,0,.1);
  font-family:var(--font-d); font-size:15.5px; font-weight:600;
  letter-spacing:.01em; text-transform:uppercase;
  color:#3A3B44;
  position:relative; transition:.22s var(--ease);
}
.side__nav a::before{
  content:""; position:absolute; left:-14px; top:50%; width:4px; height:0;
  background:var(--kirmizi); transform:translateY(-50%);
  transition:height .25s var(--ease);
}
.side__nav a:hover{ color:var(--kirmizi); padding-left:8px; }
.side__nav a.is-active{ color:var(--kirmizi); }
.side__nav a.is-active::before{ height:24px; }

.side__box{
  margin-top:32px; padding:26px 24px;
  background:var(--lacivert); color:#fff;
}
.side__box h3{ font-size:19px; text-transform:uppercase; margin-bottom:8px; }
.side__box p{ margin:0 0 18px; font-size:15px; color:rgba(255,255,255,.72); }
.side__box a{
  display:block; font-family:var(--font-d); font-size:17px; font-weight:700;
  color:#fff; letter-spacing:.01em;
}
.side__box a:hover{ color:var(--kirmizi-acik); }

/* --- Okuma alanı --- */
.prose{ max-width:78ch; }
.prose > *:first-child{ margin-top:0; }
.prose p{ margin:0 0 22px; font-size:17.5px; line-height:1.75; color:#3C3D45; }
.prose h2{
  font-size:clamp(22px, 2.2vw, 30px);
  text-transform:uppercase; letter-spacing:-.005em;
  color:var(--lacivert);
  margin:46px 0 18px; padding-top:26px;
  border-top:1px solid rgba(0,0,0,.1);
}
.prose h2:first-child{ margin-top:0; padding-top:0; border-top:0; }
.prose ul{ margin:0 0 26px; padding:0; list-style:none; }
.prose li{
  position:relative; padding:0 0 12px 30px;
  font-size:17px; line-height:1.7; color:#3C3D45;
}
.prose li::before{
  content:""; position:absolute; left:2px; top:11px;
  width:9px; height:9px; background:var(--kirmizi);
}
.prose strong{ color:var(--lacivert); font-weight:600; }

.prose__note{
  margin:34px 0; padding:26px 30px;
  background:var(--kum); border-left:4px solid var(--kirmizi);
  font-size:17px; color:#3C3D45;
}

/* --- Zaman çizelgesi (Tarihçe) --- */
.tline{ position:relative; margin:0; padding:0 0 0 34px; list-style:none; }
.tline::before{
  content:""; position:absolute; left:6px; top:8px; bottom:8px;
  width:2px; background:rgba(0,0,0,.12);
}
.tline li{ position:relative; padding:0 0 34px; }
.tline li::before{
  content:""; position:absolute; left:-34px; top:9px;
  width:14px; height:14px; border-radius:50%;
  background:var(--beyaz); border:3px solid var(--kirmizi);
}
.tline b{
  display:block; margin-bottom:8px;
  font-family:var(--font-d); font-size:24px; font-weight:700;
  color:var(--kirmizi); letter-spacing:.02em;
}
.tline p{ margin:0; font-size:17px; line-height:1.72; color:#3C3D45; }

/* --- Sayı kutuları --- */
.facts{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:rgba(0,0,0,.1); margin:34px 0; }
.facts div{ background:var(--kum); padding:26px 22px; }
.facts b{
  display:block; font-family:var(--font-d); font-size:27px; font-weight:700;
  line-height:1; color:var(--lacivert);
}
.facts span{ display:block; margin-top:7px; font-size:14.5px; color:var(--gri); }

/* --- İletişim kartları --- */
.icards{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin:0 0 40px; }
.icard{
  padding:28px 26px; background:var(--kum);
  border-top:3px solid var(--kirmizi);
}
.icard h3{
  font-size:16px; letter-spacing:.18em; text-transform:uppercase;
  color:var(--gri); margin-bottom:10px;
}
.icard p, .icard a{
  display:block; margin:0;
  font-family:var(--font-d); font-size:17px; font-weight:600;
  line-height:1.35; color:var(--lacivert);
}
.icard a:hover{ color:var(--kirmizi); }

@media (max-width:900px){
  .page__grid{ grid-template-columns:1fr; }
  .side{ position:static; }
  .side__nav{ display:grid; grid-template-columns:repeat(2,1fr); gap:0 20px; }
  .facts, .icards{ grid-template-columns:1fr; }
  .facts{ gap:1px; }
}

/* --- Projeler sayfası --- */
.pnav{ background:var(--gece); position:relative; z-index:1; }
.pnav__in{
  display:flex; flex-wrap:wrap; gap:2px;
  padding:14px 0;
}
.pnav__in a{
  display:flex; align-items:baseline; gap:8px;
  padding:9px 16px;
  font-family:var(--font-d); font-size:13.5px; font-weight:600;
  letter-spacing:.06em; text-transform:uppercase;
  color:rgba(255,255,255,.72);
  border:1px solid rgba(255,255,255,.16);
  transition:.22s var(--ease);
}
.pnav__in a b{ font-size:12px; color:var(--kirmizi-acik); }
.pnav__in a:hover{ background:rgba(255,255,255,.08); color:#fff; }

.pgroup{ padding:clamp(52px,6.5vw,84px) 0; position:relative; z-index:1; }
.pgroup:nth-of-type(even){ background:var(--kum); }
.pgroup__head{ margin-bottom:30px; }
.pgroup__head h2{
  font-size:clamp(23px,2.4vw,33px); text-transform:uppercase;
  color:var(--lacivert); margin:0;
}
.pgroup__n{
  margin:0 0 8px;
  font-family:var(--font-d); font-size:12.5px; font-weight:600;
  letter-spacing:.2em; text-transform:uppercase; color:var(--kirmizi);
}

.pgrid{
  margin:0; padding:0; list-style:none;
  display:grid; grid-template-columns:repeat(4,1fr); gap:16px;
}
.pcard{
  position:relative; overflow:hidden;
  height:216px; background:var(--gece-2);
}
.pcard img{
  width:100%; height:100%; object-fit:cover;
  filter:grayscale(.3) brightness(.8);
  transition:transform .7s var(--ease), filter .5s var(--ease);
}
.pcard::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(to top, rgba(9,10,13,.9) 0%, rgba(9,10,13,.05) 62%);
}
.pcard:hover img{ transform:scale(1.06); filter:grayscale(0) brightness(.92); }
.pcard__body{ position:absolute; left:0; right:0; bottom:0; z-index:2; padding:18px 20px; }
.pcard__tag{
  display:block; margin-bottom:5px;
  font-family:var(--font-d); font-size:11px; font-weight:600;
  letter-spacing:.16em; text-transform:uppercase; color:var(--kirmizi-acik);
}
.pcard__body h3{ font-size:17px; color:#fff; line-height:1.2; }

@media (max-width:1000px){ .pgrid{ grid-template-columns:repeat(3,1fr); } }
@media (max-width:760px){ .pgrid{ grid-template-columns:repeat(2,1fr); } .pcard{ height:180px; } }
@media (max-width:460px){ .pgrid{ grid-template-columns:1fr; } }

/* --- Kariyer --- */
.kbox{
  margin:34px 0; padding:34px 32px;
  background:var(--lacivert); color:#fff;
}
.kbox h2{ color:#fff; border:0; margin:0 0 12px; padding:0; font-size:24px; }
.kbox p{ color:rgba(255,255,255,.78); margin:0 0 22px; font-size:17px; }

/* Yan menüsü olmayan sayfalar tek sütun */
.page__grid--full{ grid-template-columns:1fr; }
.page__grid--full .prose{ max-width:82ch; margin-inline:auto; }

/* ==========================================================================
   REFERANSLAR / İŞ ORTAKLARI — logo ızgarası
   Logolar farklı en-boy oranlarında geliyor. Her biri eşit boyutlu bir kutuya
   ortalanıp `contain` ile sığdırılır; böylece hiçbiri ezilmez ve dizilim düzenli
   kalır. Zemin beyaz: beyaz arka planlı JPG logolar da kutuya kaynaşır.
   ========================================================================== */
.refs{ background:var(--beyaz); padding:clamp(64px,8vw,110px) 0; position:relative; z-index:1; }

.refgrid{
  /* ul varsayılan iç boşluğu sıfırlanmazsa solda 40px'lik şerit kalır
     ve sütunlar tam genişliğe yayılmaz. */
  margin:0; padding:0; list-style:none;
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(168px, 1fr));
  gap:1px;
  background:rgba(0,0,0,.09);
  border:1px solid rgba(0,0,0,.09);
}
.refgrid li{ list-style:none; }

.ref{
  background:var(--beyaz);
  height:112px;
  display:flex; align-items:center; justify-content:center;
  padding:20px 22px;
  transition:background .25s var(--ease);
}
.ref img{
  max-width:100%; max-height:100%;
  width:auto; height:auto;
  object-fit:contain;
  filter:grayscale(1);
  opacity:.55;
  transition:filter .3s var(--ease), opacity .3s var(--ease), transform .3s var(--ease);
}
.ref:hover{ background:var(--kum); }
.ref:hover img{ filter:grayscale(0); opacity:1; transform:scale(1.05); }

.refs__not{
  margin:26px 0 0; font-size:14.5px; color:var(--gri);
}

@media (max-width:700px){
  .refgrid{ grid-template-columns:repeat(auto-fill, minmax(130px, 1fr)); }
  .ref{ height:92px; padding:16px; }
}