:root{
  --brand:#1364a4; --brand-dark:#0e4f83; --brand-light:#3a86c8;
  --bg:#f5f8fb; --surface:#ffffff; --surface-2:#eaf1f8;
  --text:#16293c; --muted:#5b7186; --border:#dce6ef;
  --shadow:0 6px 24px rgba(19,100,164,.10);
  --radius:14px;
}
[data-theme="dark"]{
  --bg:#0b141d; --surface:#121f2c; --surface-2:#0f1a26;
  --text:#e7eef5; --muted:#9db1c3; --border:#1f3245;
  --shadow:0 6px 24px rgba(0,0,0,.45);
  --brand-light:#5da3dd;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;transition:background .25s,color .25s}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-light)}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* header */
header{position:sticky;top:0;z-index:1000;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:0 2px 10px rgba(0,0,0,.05)}
.topbar{background:var(--brand);color:#fff;font-size:.82rem}
.topbar .container{display:flex;justify-content:space-between;align-items:center;min-height:34px;gap:12px;flex-wrap:wrap}
.topbar a{color:#fff;opacity:.92}
.topbar a:hover{opacity:1;color:#fff}
.topbar .left,.topbar .right{display:flex;gap:16px;align-items:center}
nav.main{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.logo img{height:46px;width:auto}
[data-theme="dark"] .logo img{filter:brightness(0) invert(1)}
.menu{display:flex;gap:2px;list-style:none;align-items:center}
.menu>li{position:relative}
.menu>li>a{display:block;padding:10px 13px;font-weight:600;font-size:.93rem;color:var(--text);border-radius:8px;white-space:nowrap}
.menu>li>a:hover,.menu>li>a.active{color:var(--brand);background:var(--surface-2)}
.dropdown{position:absolute;left:0;top:100%;min-width:330px;background:var(--surface);border:1px solid var(--border);
  border-radius:12px;box-shadow:var(--shadow);padding:8px;display:none;z-index:1200}
.menu li:hover>.dropdown,.menu li.open>.dropdown{display:block}
.dropdown a{display:block;padding:9px 12px;font-size:.88rem;border-radius:8px;color:var(--text)}
.dropdown a:hover{background:var(--surface-2);color:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px}
.theme-toggle{background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  width:40px;height:40px;border-radius:50%;cursor:pointer;font-size:1.05rem;display:flex;align-items:center;justify-content:center}
.theme-toggle:hover{border-color:var(--brand)}
.lang-toggle{background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  min-width:40px;height:40px;border-radius:999px;font-weight:800;font-size:.82rem;letter-spacing:.04em;
  display:flex;align-items:center;justify-content:center;padding:0 13px}
.lang-toggle:hover{border-color:var(--brand);color:var(--brand)}
.hamburger{display:none;background:none;border:none;font-size:1.6rem;color:var(--text);cursor:pointer}

/* hero */
.hero{background:linear-gradient(135deg,var(--brand-dark) 0%,var(--brand) 55%,var(--brand-light) 100%);color:#fff;overflow:hidden}
.hero .container{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;padding:64px 20px}
.hero h1{font-size:2.35rem;line-height:1.22;margin-bottom:18px}
.hero p{font-size:1.06rem;opacity:.93;margin-bottom:26px;max-width:34rem}
.hero img{max-height:360px;margin:0 auto;filter:drop-shadow(0 18px 30px rgba(0,0,0,.35))}
.btn{display:inline-block;padding:12px 24px;border-radius:10px;font-weight:700;font-size:.95rem;border:2px solid transparent;cursor:pointer}
.btn-primary{background:#fff;color:var(--brand)}
.btn-primary:hover{background:var(--surface-2);color:var(--brand-dark)}
.btn-outline{border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-dark);color:#fff}
.btn-ghost{border-color:var(--border);color:var(--text);background:var(--surface)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.hero .btns{display:flex;gap:12px;flex-wrap:wrap}

/* page head */
.page-head{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;padding:42px 0}
.page-head h1{font-size:1.9rem}
.crumbs{font-size:.85rem;opacity:.85;margin-top:6px}
.crumbs a{color:#fff;text-decoration:underline}

/* sections */
section.block{padding:56px 0}
.eyebrow{color:var(--brand);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;margin-bottom:8px}
h2.title{font-size:1.7rem;margin-bottom:14px}
.lead{font-size:1.05rem;color:var(--muted);max-width:46rem}
.grid{display:grid;gap:22px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .2s}
.card:hover{transform:translateY(-4px)}
.card .imgwrap{aspect-ratio:4/3;background:#fff;display:flex;align-items:center;justify-content:center;padding:14px;border-bottom:1px solid var(--border)}
.card .imgwrap img{max-height:100%;object-fit:contain}
.card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{font-size:1.02rem;line-height:1.4}
.card p{font-size:.88rem;color:var(--muted);flex:1}
.card .more{font-weight:700;font-size:.88rem}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow)}
.prose h3{margin:20px 0 8px;font-size:1.12rem;color:var(--brand)}
.prose p{margin-bottom:12px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.chip{background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  padding:5px 12px;border-radius:999px;font-size:.82rem;font-weight:600}
.badge{display:inline-block;background:var(--brand);color:#fff;font-size:.72rem;font-weight:700;
  padding:3px 10px;border-radius:999px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px}
.pdfs{display:grid;gap:10px;margin-top:14px}
.pdfs a{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);
  border-radius:10px;padding:11px 14px;font-weight:600;font-size:.9rem}
.pdfs a:hover{border-color:var(--brand)}
.iconrow{display:flex;gap:14px;flex-wrap:wrap;margin-top:18px}

/* model modal */
.chip-btn{cursor:pointer;font-family:inherit}
.chip-btn:hover{border-color:var(--brand);color:var(--brand)}
.modal-overlay{position:fixed;inset:0;background:rgba(8,20,32,.6);backdrop-filter:blur(3px);
  display:none;align-items:center;justify-content:center;z-index:2000;padding:20px}
.modal-overlay.show{display:flex}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);
  max-width:720px;width:100%;max-height:88vh;overflow:auto;padding:30px;position:relative}
.modal .mimg{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:18px}
.modal .mimg img{max-height:300px;margin:0 auto;object-fit:contain}
.modal h3{color:var(--brand);font-size:1.25rem;margin-bottom:10px;padding-right:30px}
.modal p{margin-bottom:10px;font-size:.94rem}
.modal-close{position:absolute;top:12px;right:14px;background:var(--surface-2);border:1px solid var(--border);
  color:var(--text);width:34px;height:34px;border-radius:50%;font-size:1.1rem;cursor:pointer;line-height:1}
.modal-close:hover{border-color:var(--brand);color:var(--brand)}

/* referanslar */
.ref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.ref-grid div{background:var(--surface);border:1px solid var(--border);border-radius:10px;
  padding:11px 14px;font-size:.84rem;font-weight:600}

/* iletişim */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:start}
.info-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.info-card h3{color:var(--brand);margin-bottom:6px;font-size:1.05rem}
.info-card+.info-card{margin-top:18px}
.info-card p{font-size:.95rem}
#map{height:430px;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);z-index:1}
[data-theme="dark"] .leaflet-tile{filter:brightness(.72) contrast(1.05) saturate(.85)}
[data-theme="dark"] .leaflet-control-attribution{background:rgba(15,26,38,.8);color:#9db1c3}
.dir-buttons{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.dir-buttons a{display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--surface);
  border:1px solid var(--border);border-radius:12px;padding:14px 8px;font-weight:700;font-size:.88rem;text-align:center}
.dir-buttons a small{color:var(--muted);font-weight:500;font-size:.74rem}
.dir-buttons a:hover{border-color:var(--brand)}
.transit{margin-top:16px;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:16px 18px;font-size:.9rem}
.transit b{color:var(--brand)}

/* footer */
footer{background:var(--surface-2);border-top:1px solid var(--border);margin-top:40px}
.foot{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:36px;padding:48px 0 36px}
.foot h4{font-size:.95rem;margin-bottom:14px;color:var(--brand)}
.foot ul{list-style:none}
.foot li{margin-bottom:8px;font-size:.88rem}
.foot a{color:var(--text)}
.foot a:hover{color:var(--brand)}
.foot .desc{font-size:.88rem;color:var(--muted);margin-top:12px;max-width:30rem}
.foot .logo img{height:42px}
.copy{border-top:1px solid var(--border);padding:16px 0;font-size:.82rem;color:var(--muted);
  display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.copy a{font-weight:600}
.socials{display:flex;gap:10px;margin-top:14px}
.socials a{width:36px;height:36px;border-radius:50%;background:var(--surface);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:1rem}
.socials a:hover{border-color:var(--brand)}

/* whatsapp float */
.wa-float{position:fixed;right:22px;bottom:22px;width:54px;height:54px;border-radius:50%;background:#25d366;
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.6rem;box-shadow:0 8px 20px rgba(0,0,0,.3);z-index:1500}
.wa-float:hover{transform:scale(1.07);color:#fff}

@media(max-width:920px){
  .grid.c3,.grid.c4{grid-template-columns:repeat(2,1fr)}
  .hero .container{grid-template-columns:1fr;text-align:center;padding:44px 20px}
  .hero .btns{justify-content:center}
  .hero img{max-height:260px}
  .split,.contact-grid{grid-template-columns:1fr}
  .ref-grid{grid-template-columns:repeat(2,1fr)}
  .hamburger{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:100%;background:var(--surface);
    flex-direction:column;align-items:stretch;padding:10px 16px 18px;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
  .menu.open{display:flex}
  .dropdown{position:static;display:none;box-shadow:none;border:none;padding-left:14px;min-width:0}
  .menu li:hover>.dropdown,.menu li:focus-within>.dropdown{display:none}
  .menu li.open>.dropdown{display:block}
}
@media(max-width:560px){
  .grid.c2,.grid.c3,.grid.c4,.ref-grid,.dir-buttons{grid-template-columns:1fr}
  .hero h1{font-size:1.7rem}
  .topbar .left{display:none}
}