:root{
  /* Light, kurumsal */
  --bg: #F2F5F9;
  --bg2:#f6f8fb;
  --card:#ffffff;
  --text:#111827;          /* slate-900 */
  --muted:#5b6475;         /* slate-ish */
  --line:rgba(17,24,39,.10);

  /* Solar accents (kontrollü) */
  --solar:#f5b301;         /* güneş sarısı */
  --solar2:#ffcc4d;
  --green:#1fa971;         /* güven veren yeşil */
  --blue:#0a66c2;

  --radius:16px;
  --shadow:0 10px 28px rgba(17,24,39,.08);     /* daha hafif */
  --shadow2:0 6px 18px rgba(17,24,39,.06);
}

/* Overlay menu text style */
.nav--overlay a {
  color: #ffffff;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.5px;
  text-decoration: none;
  position: relative;

  /* Yumuşak gölge efekti */
  text-shadow:
    0 2px 8px rgba(0, 0, 0, 0.45),
    0 1px 2px rgba(0, 0, 0, 0.35);

  transition: all 0.3s ease;
}

/* Hover efekti */
.nav--overlay a:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

/* Active link alt çizgi */
.nav--overlay a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: #ffffff;
  box-shadow: 0 0 6px rgba(255,255,255,0.6);
}

*{ box-sizing:border-box; }
html,body{
  margin:0; padding:0;
  font-family:"Montserrat",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background: linear-gradient(180deg, var(--bg), var(--bg2));
  color:var(--text);
  overflow-x: hidden;
}
a{ color:inherit; text-decoration:none; }
.container{ width:min(1160px, calc(100% - 40px)); margin:0 auto; }
.muted{ color:var(--muted); }
.sep{ opacity:.65; margin:0 10px; }
.underline{
  color: rgba(17,24,39,.45);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  letter-spacing:.3px;
  overflow:hidden;
  white-space:nowrap;
}

/* Topbar */
.topbar{
  position:sticky; top:0; z-index:70;
  background: rgba(255,255,255,.75);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  display:flex; justify-content:space-between; align-items:center;
  gap:12px; padding:10px 0;
}
.topbar-left{ display:flex; flex-wrap:wrap; gap:10px; align-items:center; }
.tlink{ font-size:13px; color:var(--muted); }
.tlink:hover{ color:var(--text); }

/* Lang switch */
.lang{ display:flex; gap:6px; align-items:center; }
.lang-btn{
  border:1px solid var(--line);
  background:#fff;
  padding:7px 10px;
  border-radius:999px;
  font-weight:800;
  font-size:12px;
  cursor:pointer;
  color:var(--muted);
}
.lang-btn[aria-pressed="true"]{
  border-color: rgba(245,179,1,.40);
  background: rgba(245,179,1,.10);
  color: var(--text);
}

/* Header */
.main-header{
  position:sticky; top:44px; z-index:65;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; justify-content:space-between; align-items:center;
  gap:16px; padding:14px 0;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-textonly .brand-name{
  margin-left: -12px;
  font-weight:900;
  letter-spacing:.2px;
  font-size:21px;
}
.brand-textonly .brand-tag{
  font-size:12px;
  color:var(--muted);
  margin-top:3px;
}

/* Nav */
.nav{ display:flex; align-items:center; gap:10px; }
.nav a{
  font-size:14px;
  color:var(--muted);
  padding:10px 10px;
  border-radius:12px;
}
.nav a:hover{ color:var(--text); background: rgba(17,24,39,.03); }


/* Burger */
.burger{
  display:none;
  width:46px; height:46px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  cursor:pointer;
  box-shadow: var(--shadow2);
}
.burger span{
  display:block;
  height:2px;
  margin:8px 10px;
  background:var(--text);
  opacity:.75;
}

/* Hero */
.hero-img{
  position:relative;
  height:560px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-img.hero-small{ height:420px; }
.hero-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  filter:saturate(1.02) contrast(1.02);
}
.hero-overlay{
  position:absolute; inset:0;
}
.hero-overlay--light{
  /* Koyu “dram” yok: açık ve güneşli */
  background:
    linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,.05) 35%, rgba(255,255,255,.80)),
    radial-gradient(900px 460px at 18% 20%, rgba(245,179,1,.22), transparent 60%),
    radial-gradient(700px 380px at 82% 35%, rgba(31,169,113,.14), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,.25), rgba(255,255,255,.80));
}
.hero-content{
  position:absolute; left:50%; top:50%;
  transform:translate(-50%,-50%);
  width:min(1160px, calc(100% - 40px));
}
.hero-kicker{
  display:flex; align-items:center; gap:10px;
  font-size:12px; color: rgba(17,24,39,.70);
  flex-wrap:wrap;
}
.dot{
  width:8px; height:8px; border-radius:999px;
  background:var(--solar);
  box-shadow:0 0 14px rgba(245,179,1,.25);
}
.hero-content h1{
  margin:12px 0 10px;
  font-size: clamp(30px, 3.2vw, 52px);
  line-height:1.06;
  letter-spacing:-.3px;
}
.hero-content p{
  margin:0;
  max-width: 72ch;
  color: rgba(17,24,39,.72);
  line-height:1.65;
}
.hero-cta{ display:flex; gap:12px; flex-wrap:wrap; margin-top:18px; }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  font-weight:800;
  cursor:pointer;
  box-shadow: var(--shadow2);
}
.btn.primary{
  border-color: rgba(245,179,1,.45);
  background: linear-gradient(135deg, rgba(245,179,1,.18), rgba(255,255,255,.92));
}
.btn.ghost{
  background: rgba(255,255,255,.65);
}
.btn.ghost:hover{
  background: rgba(245,179,1,.18);
  border-color: rgba(245,179,1,.55);
  color: var(--text);
}

/* Sections */
.section{ padding:56px 0; }
.section.alt{
  background: #F2F5F9;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{ margin-bottom:16px; }
.section-head h2{ margin:0 0 8px; font-size:22px; }

.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap:14px; }

.feature{
  padding:18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  box-shadow: var(--shadow2);
}
.feature h3{ margin:0 0 10px; font-size:16px; }
.feature p{ margin:0; color:var(--muted); line-height:1.65; }

/* Cards / Contact */
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}
.contact{
  display:grid;
  grid-template-columns: .9fr 1.1fr;
  gap:14px;
  align-items:start;
}
.citem{ padding:12px 0; border-bottom:1px solid var(--line); }
.citem:last-child{ border-bottom:0; }
.clabel{ font-size:12px; color:var(--muted); margin-bottom:6px; }

.form label{ display:block; margin-bottom:12px; }
.form span{ display:block; font-size:12px; color:var(--muted); margin-bottom:6px; }
.form input, .form textarea{
  width:100%;
  padding:12px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  outline:none;
}
.form input:focus, .form textarea:focus{
  border-color: rgba(245,179,1,.55);
  box-shadow: 0 0 0 4px rgba(245,179,1,.12);
}
.form .row{ display:grid; grid-template-columns: 1fr 1fr; gap:12px; }
.form-actions{ display:flex; gap:12px; align-items:center; flex-wrap:wrap; }
.form-status{ font-size:13px; color: var(--muted); }

/* Projects */
.projects-grid{ display:grid; gap:14px; }
.project-card{
  border:1px solid var(--line);
  border-radius:20px;
  background:#fff;
  padding:18px;
  box-shadow: var(--shadow);
}
.pc-top{ display:flex; justify-content:space-between; gap:12px; align-items:flex-start; }
.pc-kicker{ font-size:12px; color:var(--muted); }
.pc-title{ font-size:18px; font-weight:900; margin-top:4px; }
.pc-status{
  font-size:12px;
  padding:8px 10px;
  border-radius:999px;
  border:1px solid rgba(31,169,113,.25);
  background:rgba(31,169,113,.10);
}
.pc-metrics{
  display:grid;
  grid-template-columns: repeat(4,1fr);
  gap:10px;
  margin:14px 0;
}
.metric{
  padding:12px;
  border:1px solid var(--line);
  border-radius:14px;
  background: #fff;
  box-shadow: var(--shadow2);
}
.metric-label{ font-size:12px; color:var(--muted); margin-bottom:6px; }
.metric-val{ font-weight:900; }
.pc-actions{ display:flex; gap:10px; flex-wrap:wrap; }

.pc-notes{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:10px;
  margin-top:14px;
}
.plist{
  padding:14px;
  border:1px solid var(--line);
  border-radius:14px;
  background:#fff;
  box-shadow: var(--shadow2);
}
.plist-title{ font-weight:900; margin-bottom:8px; }
.plist ul{ margin:0; padding-left:18px; color:var(--muted); }
.plist li{ margin:6px 0; }

/* Footer minimal */
.footer{
  background:#ffffff;
  border-top:1px solid var(--line);
  padding:26px 0;
  position:relative;
}
.footer-min{
  display:flex;
  justify-content:space-between;
  gap:18px;
  align-items:flex-start;
}
.footer-name{
  font-weight:900;
  letter-spacing:.2px;
  font-size:16px;
  margin-bottom:10px;
}
.footer-minirow{
  display:flex;
  gap:10px;
  align-items:center;
  margin:8px 0;
}
.fmini{
  width:20px; height:20px;
  display:inline-grid; place-items:center;
  border-radius:6px;
  background: rgba(245,179,1,.12);
  color: rgba(17,24,39,.85);
  font-weight:900;
  font-size:12px;
}
.footer-copy{
  text-align:right;
  color: var(--muted);
  font-size:13px;
  max-width: 60ch;
  margin-top: 30px;
}

.footer-copy a{
color: #0a66c2;
font-weight: bold;
}

/* To top */
.to-top{
  position:fixed;
  right:18px;
  bottom:18px;
  width:48px;
  height:48px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  cursor:pointer;
  box-shadow: var(--shadow2);
  font-size:18px;
  font-weight:900;
}
.to-top:hover{
  border-color: rgba(245,179,1,.40);
}

/* başlangıçta gizli */
.to-top{
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

/* scroll sonrası görünür */
.to-top.show{
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 980px){
  .grid-3{ grid-template-columns:1fr; }
  .contact{ grid-template-columns:1fr; }
  .pc-metrics{ grid-template-columns:1fr 1fr; }
  .pc-notes{ grid-template-columns:1fr; }
  .footer-min{ flex-direction:column; }
  .footer-copy{ text-align:left; }
}
@media (max-width: 860px){
  .burger{ display:block; }

  .nav{
    position:fixed;
    top:92px; left:0; right:0;
    padding:12px;
    background: rgba(255,255,255,.95);
    border-bottom:1px solid var(--line);
    display:none;
    flex-direction:column;
    gap:6px;
    z-index:80;
  }
  .nav.open{ display:flex; }
  .nav a{ width:100%; }
}
@media (max-width: 560px){
  .hero-img{ height:520px; }
  .hero-img.hero-small{ height:380px; }
}


/* =========================
   HERO ÜSTÜ TRANSPARENT HEADER (2. foto tarzı)
   ========================= */

/* Topbar kaldırıldıysa main-header artık en üste gelsin */
.main-header{
  top: 0 !important;
}

/* Transparent header */
.header-transparent{
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  z-index: 100;
  background: transparent !important;
  border-bottom: 1px solid rgba(255,255,255,.22);
  backdrop-filter: none;
}

/* Header içerik hizası: sol logo, orta menu, sağ dil */
.header-inner--overlay{
  padding: 18px 0;
}

.main-header {
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(8px);
}

/* Yazılar beyaz olacak */
.brand--overlay .brand-name,
.brand--overlay .brand-tag,
.nav--overlay a{
  color: rgba(255,255,255,.92);
}

.brand--overlay .brand-tag{
  color: rgba(255,255,255,.72);
}

/* Menü ortada ve geniş aralıklı */
.nav--overlay{
  margin: 0 auto;
  gap: 44px;
}

/* Menü hover/active: 2. görsel gibi soft */
.nav--overlay a{
  background: transparent;
  border: 0;
  padding: 10px 0;
  font-weight: 700;
  letter-spacing: .2px;
}
.nav--overlay a:hover{
  color: #ffffff;
  text-shadow: 0 6px 18px rgba(0,0,0,.25);
}
.nav--overlay a.active{
  color: #ffffff;
  border-bottom: 2px solid rgba(245,179,1,.85);
  padding-bottom: 8px;
}

/* Dil butonları header sağda, şeffaf */
.lang--overlay .lang-btn{
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.22);
  color: rgba(255,255,255,.92);
}
.lang--overlay .lang-btn[aria-pressed="true"]{
  background: rgba(245,179,1,.20);
  border-color: rgba(245,179,1,.55);
  color: #fff;
}

/* Burger (mobil) beyaz */
.burger--overlay{
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.22);
  box-shadow: none;
}
.burger--overlay span{
  background: #fff;
  opacity: .9;
}

/* Mobil menü açılınca arka plan beyaz değil, koyu şeffaf olsun */
@media (max-width: 860px){
  .nav{
    top: 72px !important;
    background: rgba(10,14,25,.92) !important;
    border-bottom: 1px solid rgba(255,255,255,.10) !important;
  }
  .nav a{
    color: rgba(255,255,255,.92) !important;
    padding: 12px 10px !important;
  }
  .nav a.active{
    border-bottom: 0 !important;
    background: rgba(245,179,1,.14) !important;
    border-radius: 12px;
  }
}

/* =========================
   FULL-BLEED HERO + 2. FOTO HEADER TYPO
   ========================= */

/* Hero görseli her durumda full width (container içine girse bile) */
.hero-img{
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

/* Hero yüksekliği (2. foto gibi geniş alan) */
.hero-img{
  height: 78vh;
  min-height: 520px;
}
.hero-img.hero-small{
  height: 60vh;
  min-height: 420px;
}

/* Header menü yazıları: 2. foto gibi büyük */
.nav--overlay{
  gap: 64px;                 /* araları aç */
}

.nav--overlay a{
  font-size: 20px;           /* büyüt */
  font-weight: 600;
  letter-spacing: .2px;
  color: rgba(255,255,255,.92);
  padding: 8px 0;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.6);
}

.nav--overlay a:hover{
  color: #fff;
}

.nav--overlay a.active{
  border-bottom: 0;          /* alt çizgiyi kaldırıyoruz */
  position: relative;
}

.nav--overlay a.active::after{
  content:"";
  position:absolute;
  left:0; right:0;
  bottom:-8px;
  height:3px;
  border-radius:999px;
  background: #ffffff8a;  /* solar underline */
}

/* Dil butonları: 1. foto’daki gibi pill kalsın ama overlayde daha soft */
.lang--overlay .lang-btn{
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.22);
  color: rgba(255,255,255,.92);
}

.lang--overlay .lang-btn[aria-pressed="true"]{
  background: rgba(245,179,1,.20);
  border-color: rgba(245,179,1,.55);
  color: #fff;
}

/* Hero büyük yazı şeridi (2. foto hissi) */
.hero-titleband{
  margin-top: 90px; /* header altından biraz aşağı */
}

.hero-titleband-inner{
  width: 100%;
  background: rgba(0,0,0,.18);
  border-top: 1px solid rgba(255,255,255,.20);
  border-bottom: 1px solid rgba(255,255,255,.20);
  padding: 22px 26px;
}

.hero-titleband-text{
  margin: 0;
  font-size: clamp(34px, 4.8vw, 72px);
  line-height: 1.06;
  font-weight: 500;
  letter-spacing: .3px;
  color: rgba(255,255,255,.95);
  text-align: center;
  text-shadow: 0 18px 40px rgba(0,0,0,.35);
}

/* Mobilde menü font küçülsün */
@media (max-width: 980px){
  .nav--overlay{ gap: 22px; }
  .nav--overlay a{ font-size: 16px; }
  .hero-titleband{ margin-top: 74px; }
}

@media (max-width: 860px){
  /* mobil menü açılınca zaten dropdown çalışıyor */
  .hero-titleband-inner{
    padding: 16px 16px;
  }
}



.about-title{
  margin: 0;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: .6px;
}

.about-underline{
  height: 2px;
  width: 140px;
  border-radius: 999px;
  margin: 12px 0 14px;
}

.about-text{
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 14px;
}

.about-text:last-child{
  margin-bottom: 0;
}

.contact-text{
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 14px; 
}

.hero-img{
  height: 100vh;          /* tam ekran */
  min-height: 640px;      /* çok küçük ekranlarda da düzgün dursun */
}

.hero-img img{
  width: 108%;
  height: 100%;
  object-fit: cover;      /* kırpar ama tam ekran doldurur */
  object-position: center;/* odak */
}
.pc-simple{
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.pc-actions-simple{
  margin-top: 4px;
}

.pdf-list{
  margin: 0;
  padding-left: 20px;
}

.pdf-list li{
  margin: 10px 0;
}

.pdf-list a{
  color: var(--muted);
  font-weight: 500;
  transition: all 0.25s ease;
}

.pdf-list a:hover{
  color: #f5b301;
}