/* Kuzey Köpük — Alternatif 1 "Kuzey Yıldızı" */
:root{--navy:#0B1F3A;--navy2:#13315C;--navy3:#071628;--ice:#38BDF8;--ice2:#BAE6FD;--ice3:#E0F2FE;--bg:#F3F7FB;--txt:#1E293B;--mut:#64748B;--line:#E2E8F0}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,system-ui,sans-serif;color:var(--txt);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,.logo{font-family:Manrope,Inter,sans-serif}
a{color:inherit}
img{max-width:100%;display:block}
.w{max-width:1240px;margin:0 auto;padding:0 32px}

/* Üst bar + header */
.top{background:var(--navy3);color:#94A3B8;font-size:13px}
.top .w{display:flex;justify-content:space-between;padding-top:9px;padding-bottom:9px}
.top a{color:#E2E8F0;text-decoration:none;font-weight:500}
header{background:var(--navy);border-bottom:1px solid rgba(255,255,255,.08);position:sticky;top:0;z-index:50}
header .w{display:flex;align-items:center;justify-content:space-between;height:80px}
.logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:21px;letter-spacing:.06em;text-decoration:none}
.logo small{display:block;font:500 10px Inter,sans-serif;letter-spacing:.32em;color:var(--ice2);margin-top:-2px}
nav.main{display:flex;gap:30px}
nav.main a{color:#CBD5E1;text-decoration:none;font-size:15px;font-weight:500}
nav.main a:hover,nav.main a.on{color:#fff}
.burger{display:none;background:none;border:0;cursor:pointer;padding:6px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ice);color:var(--navy);font-weight:700;padding:13px 24px;border-radius:8px;text-decoration:none;font-size:15px;border:0;cursor:pointer;font-family:inherit}
.btn:hover{background:#7DD3FC}
.btn.gh{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.35)}
.btn.gh:hover{border-color:#fff}
.btn.dk{background:var(--navy);color:#fff}
.btn.wa{background:#25D366;color:#fff}

/* Hero */
.hero{background:radial-gradient(1000px 500px at 80% 30%,#1E4A80 0,transparent 60%),var(--navy);color:#fff;padding:90px 0 150px;overflow:hidden}
.hero .w{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.tag{display:inline-block;font-size:13px;font-weight:600;color:var(--ice2);border:1px solid rgba(186,230,253,.3);padding:6px 14px;border-radius:99px;margin-bottom:24px}
.hero h1{font-size:56px;line-height:1.08;font-weight:800;letter-spacing:-.02em}
.hero h1 span{color:var(--ice)}
.hero p{color:#B6C3D6;font-size:18px;margin:22px 0 34px;max-width:520px}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.art svg{width:100%;height:auto}

/* Alt sayfa başlığı */
.ph{background:radial-gradient(800px 300px at 85% 0,#1E4A80 0,transparent 60%),var(--navy);color:#fff;padding:64px 0 70px}
.ph h1{font-size:44px;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.ph p{color:#B6C3D6;font-size:17px;margin-top:12px;max-width:640px}
.crumb{font-size:13px;color:#94A3B8;margin-bottom:16px}
.crumb a{color:#94A3B8;text-decoration:none}

/* Öne çıkanlar kartı */
.stats{margin-top:-80px;position:relative}
.stats .card{background:#fff;border-radius:16px;box-shadow:0 30px 60px -20px rgba(11,31,58,.25);display:grid;grid-template-columns:repeat(4,1fr);padding:34px 10px}
.stats .s{text-align:center;border-right:1px solid var(--line);padding:0 10px}
.stats .s:last-child{border:0}
.stats b{display:block;font:800 34px Manrope,sans-serif;color:var(--navy)}
.stats span{color:var(--mut);font-size:14px}

/* Bölümler */
section{padding:96px 0}
.eyebrow{color:#0284C7;font-weight:700;font-size:13px;letter-spacing:.18em;text-transform:uppercase}
.h2{font-size:40px;font-weight:800;color:var(--navy);letter-spacing:-.02em;line-height:1.15;margin:10px 0 14px}
.lead{color:var(--mut);font-size:17px;max-width:640px}
.head{display:flex;justify-content:space-between;align-items:end;margin-bottom:48px;gap:20px}
.more{color:#0284C7;font-weight:600;text-decoration:none;font-size:15px;white-space:nowrap}
.alt{background:var(--bg)}

/* Ürün kartları */
.prods{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.p{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;text-decoration:none;display:block;transition:box-shadow .2s,transform .2s}
.p:hover{box-shadow:0 20px 40px -20px rgba(11,31,58,.3);transform:translateY(-2px)}
.p .im{height:220px;background:var(--bg);display:flex;align-items:center;justify-content:center}
.p .c{padding:26px}
.p h3{font-size:22px;color:var(--navy)}
.p p{color:var(--mut);font-size:15px;margin:8px 0 16px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chips i{font-style:normal;font-size:12px;font-weight:600;background:var(--ice3);color:#0369A1;padding:4px 10px;border-radius:6px}

/* Kalınlık seçici */
.thk{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.thk a{flex:1;min-width:92px;background:#fff;border:1.5px solid #DCE6F0;border-radius:12px;padding:18px 0;text-align:center;text-decoration:none;transition:border-color .2s}
.thk a:hover{border-color:var(--ice)}
.thk b{display:block;font:800 26px Manrope,sans-serif;color:var(--navy)}
.thk span{font-size:12px;color:var(--mut)}
.thk a.on{background:var(--navy);border-color:var(--navy)}
.thk a.on b{color:var(--ice)}
.thk a.on span{color:#94A3B8}

/* İkili düzen + özellikler */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:34px}
.feat>div{display:flex;gap:14px}
.feat .ic{flex:0 0 46px;height:46px;border-radius:10px;background:var(--ice3);display:flex;align-items:center;justify-content:center}
.feat h4{font-size:16px;color:var(--navy)}
.feat p{font-size:14px;color:var(--mut)}
.photo{min-height:420px;border-radius:18px;background:linear-gradient(160deg,var(--navy2),var(--navy));position:relative;overflow:hidden}
.photo svg{position:absolute;inset:0;width:100%;height:100%}

/* Uygulama alanları */
.areas{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.a{min-height:220px;border-radius:14px;padding:24px;color:#fff;display:flex;flex-direction:column;justify-content:end}
.a h4{font-size:19px}
.a p{font-size:14px;opacity:.85}

/* Süreç */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px}
.step:before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--navy);color:var(--ice);font:800 16px Manrope,sans-serif;margin-bottom:18px}
.step h4{font-size:17px;color:var(--navy)}
.step p{font-size:14px;color:var(--mut);margin-top:4px}

/* Teknik tablo */
.tbl{width:100%;border-collapse:collapse;font-size:15px;background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.tbl th{background:var(--navy);color:#fff;text-align:left;font-weight:600;font-size:13px;padding:14px 16px}
.tbl td{padding:14px 16px;border-top:1px solid var(--line)}
.tbl tr:nth-child(even) td{background:#FAFCFE}
.note{font-size:13px;color:var(--mut);margin-top:12px}

/* Ürün detay */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.pd .vis{background:var(--bg);border-radius:18px;min-height:380px;display:flex;align-items:center;justify-content:center}
.pd ul{list-style:none;margin:20px 0 28px;display:grid;gap:10px}
.pd li{display:flex;gap:10px;align-items:flex-start}
.pd li:before{content:"";flex:0 0 20px;height:20px;border-radius:50%;background:var(--ice3) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20'%3E%3Cpath d='M6 10.5l2.5 2.5L14 7.5' stroke='%230284C7' stroke-width='2' fill='none'/%3E%3C/svg%3E");margin-top:2px}
.prose{max-width:780px}
.prose h2{font-size:28px;color:var(--navy);margin:36px 0 10px}
.prose p{color:#334155;margin-bottom:14px;font-size:16px}

/* SSS */
.faq{max-width:860px}
.faq details{border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin-bottom:10px;background:#fff}
.faq summary{font-weight:600;color:var(--navy);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:#0284C7;font-size:20px;line-height:1}
.faq details[open] summary:after{content:"−"}
.faq details p{color:var(--mut);margin-top:10px}

/* Teklif bandı */
.band{background:linear-gradient(90deg,var(--navy),var(--navy2));border-radius:20px;color:#fff;padding:56px 60px;display:flex;justify-content:space-between;align-items:center;gap:30px}
.band h2{font-size:34px;font-weight:800}
.band p{color:#B6C3D6}

/* İletişim + form */
.contact{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
.cinfo{display:grid;gap:14px}
.cinfo a,.cinfo div{display:flex;gap:16px;align-items:center;background:var(--bg);border-radius:14px;padding:18px 20px;text-decoration:none}
.cinfo .ic{flex:0 0 46px;height:46px;border-radius:10px;background:var(--navy);display:grid;place-items:center}
.cinfo small{display:block;color:var(--mut);font-size:13px}
.cinfo b{color:var(--navy);font-size:16px}
form.quote{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:0 30px 60px -30px rgba(11,31,58,.2)}
form.quote h3{font-size:24px;color:var(--navy)}
form.quote>p{color:var(--mut);font-size:14px;margin:4px 0 22px}
.fg{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fg .full{grid-column:1/-1}
label{display:block;font-size:13px;font-weight:600;color:var(--navy);margin-bottom:6px}
input,select,textarea{width:100%;font:inherit;font-size:15px;padding:12px 14px;border:1.5px solid #DCE6F0;border-radius:10px;background:#fff;color:var(--txt)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--ice)}
textarea{min-height:110px;resize:vertical}
form.quote .btn{width:100%;justify-content:center;margin-top:18px;padding:15px}
.map{margin-top:14px;border-radius:14px;width:100%;height:280px;border:0;background:var(--bg);display:block}

/* Footer */
footer{background:var(--navy3);color:#94A3B8;padding:70px 0 30px;font-size:14px}
footer .g{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
footer h5{color:#fff;font:700 15px Manrope,sans-serif;margin-bottom:16px}
footer ul{list-style:none}
footer li{margin-bottom:9px}
footer a{text-decoration:none}
footer a:hover{color:#fff}
footer .bt{border-top:1px solid #1E293B;margin-top:50px;padding-top:24px;display:flex;justify-content:space-between;gap:20px}

/* WhatsApp butonu */
.wa-float{position:fixed;right:22px;bottom:22px;width:60px;height:60px;border-radius:50%;background:#25D366;display:grid;place-items:center;box-shadow:0 12px 30px -8px rgba(0,0,0,.35);z-index:60}

/* Mobil */
@media(max-width:960px){
 .w{padding:0 18px}
 .top{display:none}
 header .w{height:68px}
 header .btn{display:none}
 .burger{display:block}
 nav.main{display:none;position:absolute;top:68px;left:0;right:0;background:var(--navy);flex-direction:column;gap:0;padding:8px 18px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
 nav.main.open{display:flex}
 nav.main a{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:16px}
 .hero{padding:40px 0 110px}
 .hero .w,.split,.feat,.pd,.contact{grid-template-columns:1fr}
 .hero h1{font-size:36px}
 .hero p{font-size:16px}
 .art{order:-1}
 .ph{padding:40px 0 46px}
 .ph h1{font-size:32px}
 .stats .card{grid-template-columns:1fr 1fr;row-gap:24px}
 .stats .s:nth-child(2){border:0}
 .stats b{font-size:26px}
 section{padding:60px 0}
 .h2{font-size:28px}
 .head{display:block}
 .prods,.areas,.steps{grid-template-columns:1fr}
 .thk a{min-width:calc(33% - 8px)}
 .photo{min-height:280px}
 .band{flex-direction:column;align-items:flex-start;padding:34px 24px}
 .band h2{font-size:26px}
 .fg{grid-template-columns:1fr}
 form.quote{padding:24px}
 .tbl{font-size:13px}
 .tbl th,.tbl td{padding:10px}
 footer .g{grid-template-columns:1fr}
 footer .bt{flex-direction:column}
}