/* Güneş Isı Sistemleri – kurumsal tema */
:root{
  --navy:#0B2A5B; --navy-2:#071D41; --navy-3:#123A7A;
  --orange:#F47B20; --orange-d:#D96810; --sun:#FFB300;
  --ink:#16243D; --muted:#5B6B85; --line:#E3E9F2; --bg:#F5F8FC; --white:#fff; --wa:#1FAF54;
  --r:16px; --shadow:0 10px 30px rgba(11,42,91,.10); --shadow-s:0 2px 10px rgba(11,42,91,.08);
  --f-h:'Outfit','Inter',system-ui,sans-serif; --f-b:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;font-family:var(--f-b);color:var(--ink);background:#fff;line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;height:auto;display:block}
a{color:var(--navy-3);text-decoration:none} a:hover{color:var(--orange-d)}
h1,h2,h3,h4{font-family:var(--f-h);line-height:1.2;color:var(--navy);margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.2vw,3.1rem)} h2{font-size:clamp(1.55rem,2.8vw,2.1rem)} h3,.h3{font-size:1.25rem}
p{margin:0 0 1em}
.wrap{width:min(1200px,100% - 32px);margin-inline:auto}
.narrow{width:min(860px,100% - 32px)} .center{text-align:center}
.ic{flex:none;vertical-align:middle}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 14px;z-index:999;border-radius:8px} .skip:focus{left:8px}

/* Üst bar */
.topbar{background:var(--navy-2);color:#cfe0ff;font-size:.88rem}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding:8px 0;align-items:center;flex-wrap:wrap}
.topbar a{color:#fff;font-weight:600} .topbar span,.topbar a{display:inline-flex;gap:6px;align-items:center}

/* Header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;color:var(--navy)} .brand:hover{color:var(--navy)}
.brand-t{display:flex;flex-direction:column;line-height:1}
.brand-t b{font-family:var(--f-h);font-size:1.45rem;font-weight:800;letter-spacing:.01em}
.brand-t i{font-style:normal;font-family:var(--f-h);font-weight:700;font-size:.82rem;letter-spacing:.32em;color:var(--orange);margin-top:3px}
.brand-light{color:#fff} .brand-light:hover{color:#fff} .brand-light .brand-t i{color:var(--sun)}
.nav{display:flex;align-items:center;gap:4px}
.nav>a,.dd>a{padding:10px 13px;color:var(--ink);font-weight:600;font-size:.97rem;border-radius:10px;display:block}
.nav>a:hover,.dd:hover>a{background:var(--bg);color:var(--orange-d)}
.dd{position:relative}
.dd-m{position:absolute;left:0;top:100%;min-width:250px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;display:none;grid-template-columns:1fr}
.dd:hover .dd-m,.dd:focus-within .dd-m{display:grid}
.dd-m a{padding:9px 12px;border-radius:8px;color:var(--ink);font-weight:500;font-size:.95rem} .dd-m a:hover{background:var(--bg);color:var(--orange-d)}
.nav-cta{margin-left:8px}
.burger{display:none;background:none;border:0;color:var(--navy);padding:6px;cursor:pointer}

/* Butonlar */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 22px;border-radius:12px;font-weight:700;font-family:var(--f-h);font-size:1rem;border:2px solid transparent;cursor:pointer;transition:.18s;line-height:1.2;text-align:center}
.btn-lg{padding:15px 26px;font-size:1.08rem}
.btn-accent{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(244,123,32,.35)} .btn-accent:hover{background:var(--orange-d);color:#fff;transform:translateY(-1px)}
.btn-call{background:var(--navy);color:#fff!important;padding:10px 18px} .btn-call:hover{background:var(--navy-3)!important}
.btn-primary{background:var(--navy);color:#fff} .btn-primary:hover{background:var(--navy-3);color:#fff}
.btn-wa{background:var(--wa);color:#fff} .btn-wa:hover{background:#17964a;color:#fff}
.btn-block{display:flex;width:100%;margin-top:10px}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 4px}

/* Hero */
.hero{background:#d6c9bb;color:var(--navy-2);position:relative;overflow:hidden;min-height:100vh;min-height:100svh;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;z-index:0;background-repeat:no-repeat;background-size:cover;background-position:right center}
.hero::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(214,201,187,.92) 0%,rgba(214,201,187,.6) 40%,rgba(214,201,187,0) 60%),linear-gradient(180deg,rgba(214,201,187,.55),rgba(214,201,187,0) 22%);pointer-events:none}
.hero-in{display:block;padding:130px 0 72px;position:relative;z-index:2}
.hero-t{max-width:min(560px,52%)}
.hero h1{color:var(--navy-2);font-size:clamp(2rem,3.9vw,3.3rem);line-height:1.12}
.hero p{color:#2c3b57;font-size:1.1rem;max-width:52ch}
.hero .btn-lg{box-shadow:0 10px 24px rgba(11,42,91,.22)}
.badge{display:inline-block;background:rgba(11,42,91,.08);color:var(--navy);border:1px solid rgba(11,42,91,.25);padding:6px 14px;border-radius:99px;font-weight:700;font-size:.85rem;margin-bottom:18px;font-family:var(--f-h);letter-spacing:.04em}
.ticks{list-style:none;padding:0;margin:20px 0 0;display:flex;gap:20px;flex-wrap:wrap;color:var(--navy-2);font-weight:600}
.ticks li{display:flex;gap:6px;align-items:center} .ticks .ic{color:var(--orange-d)}
.hero-img{position:relative;justify-self:center;max-width:420px;width:100%}
.hero-img img{border-radius:28px;box-shadow:0 30px 60px rgba(0,0,0,.35);border:6px solid rgba(255,255,255,.12);aspect-ratio:3/4;object-fit:cover;object-position:center 30%;width:100%}
.hero-chip{position:absolute;left:-18px;bottom:28px;background:#fff;color:var(--navy);padding:12px 18px;border-radius:14px;box-shadow:var(--shadow);display:flex;flex-direction:column;line-height:1.25}
.hero-chip b{font-family:var(--f-h)} .hero-chip span{color:var(--orange-d);font-weight:700;font-size:.85rem}

.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.stats-in div{padding:22px 10px;border-right:1px solid var(--line);display:flex;flex-direction:column}
.stats-in div:last-child{border:0}
.stats-in b{font-family:var(--f-h);font-size:1.7rem;color:var(--orange);font-weight:800}
.stats-in span{color:var(--muted);font-size:.92rem}

/* Bölümler */
.sec{padding:72px 0} .sec-alt{background:var(--bg)}
.sec-dark{background:linear-gradient(135deg,var(--navy-2),var(--navy));color:#fff}
.sec-h{text-align:center;max-width:760px;margin:0 auto 40px}
.sec-h p{color:var(--muted)} .sec-h.light h2{color:#fff}
.eyebrow{display:inline-block;color:var(--orange-d);font-weight:800;font-family:var(--f-h);letter-spacing:.14em;text-transform:uppercase;font-size:.8rem;margin-bottom:10px}
.sec-dark .eyebrow{color:var(--sun)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scard{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;display:flex;flex-direction:column;gap:6px;color:var(--ink);box-shadow:var(--shadow-s);transition:.2s}
.scard:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcf2;color:var(--ink)}
.scard h3,.scard .h3{margin:10px 0 4px} .scard p{color:var(--muted);font-size:.97rem;margin:0 0 10px;flex:1}
.scard-ic{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--orange),var(--sun));color:#fff;display:grid;place-items:center}
.more{color:var(--orange-d);font-weight:700;display:inline-flex;gap:6px;align-items:center;font-size:.95rem}
.two{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.two-img img{border-radius:var(--r);box-shadow:var(--shadow)}
.locgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.loc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:2px;color:var(--ink);box-shadow:var(--shadow-s);transition:.2s;position:relative}
.loc .ic{color:var(--orange);margin-bottom:6px} .loc b{font-family:var(--f-h);font-size:1.15rem;color:var(--navy)} .loc span{color:var(--muted);font-size:.9rem}
.loc:hover{transform:translateY(-3px);border-color:var(--orange);color:var(--ink)}
.why-i{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r);padding:26px}
.why-i h3{color:#fff;margin:8px 0} .why-i p{color:#c9d8f4;margin:0;font-size:.97rem}
.num{width:38px;height:38px;border-radius:50%;background:var(--orange);color:#fff;display:grid;place-items:center;font-weight:800;font-family:var(--f-h)}
.process{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:p}
.process li{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;position:relative;box-shadow:var(--shadow-s)}
.process b{position:absolute;top:-16px;left:22px;width:36px;height:36px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-family:var(--f-h)}
.process h3{margin-top:10px} .process p{color:var(--muted);margin:0;font-size:.96rem}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}
.gallery img{border-radius:14px;aspect-ratio:3/4;object-fit:cover;width:100%;box-shadow:var(--shadow-s)}
.gallery figure{margin:0}
.videos{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.videos video{width:100%;aspect-ratio:9/16;max-height:520px;object-fit:cover;background:#000;border-radius:14px}

/* Sayfa hero */
.phero{background:linear-gradient(135deg,var(--navy-2),var(--navy) 60%,var(--navy-3));color:#fff;padding:34px 0 44px;position:relative;overflow:hidden}
.phero::after{content:"";position:absolute;right:-90px;top:-110px;width:360px;height:360px;border-radius:50%;border:44px solid rgba(255,179,0,.09)}
.phero-in{display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;position:relative;z-index:1}
.phero h1{color:#fff;margin-bottom:.35em;font-size:clamp(1.9rem,3.8vw,2.8rem)}
.phero-lead{color:#d6e3fb;font-size:1.1rem;max-width:62ch}
.phero-img img{border-radius:20px;aspect-ratio:5/4;object-fit:cover;width:100%;box-shadow:0 20px 40px rgba(0,0,0,.3);border:4px solid rgba(255,255,255,.14)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:0 0 16px;font-size:.88rem;color:#a9c0ea}
.crumbs li+li::before{content:"›";margin-right:6px;color:#6f8fc9}
.crumbs a{color:#d6e3fb} .crumbs a:hover{color:var(--sun)}

/* İçerik */
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:44px;padding:56px 0 64px;align-items:start}
.prose{font-size:1.04rem}
.prose h2{margin-top:2em;padding-top:.2em;position:relative}
.prose h2::before{content:"";display:block;width:46px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--orange),var(--sun));margin-bottom:12px}
.prose h3{margin-top:1.6em}
.prose ul{padding-left:1.2em} .prose li{margin:.3em 0}
.prose a{text-decoration:underline;text-decoration-color:rgba(244,123,32,.5);text-underline-offset:3px}
.lead-box{background:var(--bg);border-left:5px solid var(--orange);border-radius:0 14px 14px 0;padding:22px 26px;font-size:1.1rem;color:#26385a;margin-bottom:8px}
.lead-box p:last-child{margin:0}
.steps{list-style:none;counter-reset:s;padding:0;display:grid;gap:12px}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px 16px 64px;position:relative;display:flex;flex-direction:column;box-shadow:var(--shadow-s)}
.steps li::before{content:counter(s);position:absolute;left:16px;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;background:var(--orange);color:#fff;display:grid;place-items:center;font-weight:800;font-family:var(--f-h)}
.steps strong{color:var(--navy);font-family:var(--f-h)} .steps span{color:var(--muted);font-size:.96rem}
.linklist{list-style:none;padding:0!important;display:grid;grid-template-columns:repeat(2,1fr);gap:8px 20px}
.linklist a{display:block;padding:10px 14px;background:var(--bg);border-radius:10px;font-weight:600;text-decoration:none!important;color:var(--navy-3)}
.linklist a:hover{background:#fff1e6;color:var(--orange-d)}
.side{position:sticky;top:92px;display:grid;gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow-s)}
.card h3{margin-bottom:.4em}
.callcard{background:linear-gradient(135deg,var(--navy),var(--navy-3));color:#fff;border:0}
.callcard h3{color:#fff} .callcard p{color:#cfe0ff;font-size:.95rem}
.toc ol{padding-left:1.1em;margin:0;font-size:.93rem} .toc li{margin:.4em 0} .toc a{color:var(--ink)} .toc a:hover{color:var(--orange-d)}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;box-shadow:var(--shadow-s);overflow:hidden}
.faq summary{cursor:pointer;padding:18px 54px 18px 20px;font-weight:700;font-family:var(--f-h);color:var(--navy);list-style:none;position:relative;font-size:1.06rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:50%;background:var(--bg);display:grid;place-items:center;color:var(--orange-d);font-size:1.3rem;font-weight:700}
.faq details[open] summary::after{content:"–";background:var(--orange);color:#fff}
.faq-a{padding:0 20px 18px;color:#33466a}

/* CTA */
.cta-band{background:linear-gradient(135deg,var(--orange),#ff9a3d);color:#fff;padding:48px 0}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:.2em} .cta-band p{margin:0;color:#fff4e8} .cta-band p a{color:#fff;font-weight:800;text-decoration:underline}
.cta-band .btn-accent{background:var(--navy);box-shadow:none} .cta-band .btn-accent:hover{background:var(--navy-2)}
.cta-form{align-items:flex-start} .cta-form .card{min-width:min(460px,100%);flex:1;max-width:560px;color:var(--ink)}

/* Form */
.cform{display:grid;gap:12px}
.cform label{display:grid;gap:5px;font-weight:600;font-size:.9rem;color:var(--navy)}
.cform input,.cform select,.cform textarea{font:inherit;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%}
.cform input:focus,.cform select:focus,.cform textarea:focus{outline:0;border-color:var(--orange);box-shadow:0 0 0 3px rgba(244,123,32,.18)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hp{position:absolute!important;left:-9999px;opacity:0;height:0}
.form-msg{margin:0;font-weight:600;min-height:1.2em;font-size:.93rem} .form-msg.ok{color:#14803c} .form-msg.err{color:#c0302d}
.cform .btn-accent{width:100%}
.cinfo{display:grid;gap:12px;margin-bottom:26px}
.cinfo>*{display:flex;gap:16px;align-items:center;background:var(--bg);border-radius:14px;padding:16px 18px;color:var(--ink)}
.cinfo .ic{color:var(--orange)} .cinfo span{display:flex;flex-direction:column;line-height:1.3} .cinfo small{color:var(--muted)} .cinfo b{font-family:var(--f-h);font-size:1.1rem;color:var(--navy)}
.map iframe{width:100%;height:340px;border:0;border-radius:14px}

/* Footer */
.ftr{background:var(--navy-2);color:#b9cbea;margin-top:0}
.ftr-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding:56px 0 40px}
.ftr h3{color:#fff;font-size:1.05rem;margin-bottom:14px}
.ftr ul{list-style:none;padding:0;margin:0} .ftr li{margin:7px 0} .ftr a{color:#b9cbea} .ftr a:hover{color:var(--sun)}
.ftr-about{margin:14px 0;font-size:.95rem}
.ftr-tel{display:inline-flex;gap:8px;align-items:center;color:#fff!important;font-family:var(--f-h);font-weight:700;font-size:1.3rem}
.ftr-addr{display:flex;gap:8px;align-items:flex-start;font-size:.93rem;margin:6px 0}
.ftr-bot{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:.88rem;text-align:center;line-height:1.8}
.ftr-bot a{color:#fff;font-weight:600;text-decoration:underline}

/* Yüzen butonlar: sol alt = Ara, sağ alt = WhatsApp */
.fab{position:fixed;bottom:18px;z-index:60;display:flex;align-items:center;gap:8px;padding:0 20px 0 16px;height:58px;border-radius:99px;color:#fff;font-family:var(--f-h);font-weight:700;box-shadow:0 8px 24px rgba(0,0,0,.28);transition:transform .18s}
.fab:hover{color:#fff;transform:translateY(-3px) scale(1.03)}
.fab-call{left:16px;background:var(--orange)} .fab-wa{right:16px;background:var(--wa)}
.fab::before{content:"";position:absolute;inset:0;border-radius:99px;background:inherit;z-index:-1;animation:pulse 2.4s infinite}
@keyframes pulse{0%{transform:scale(1);opacity:.55}70%,100%{transform:scale(1.35);opacity:0}}

@media (max-width:1020px){
  .phero-in,.two{grid-template-columns:1fr}
  .hero{display:block;min-height:0;padding-bottom:300px}
  .hero-bg{top:auto;height:340px;background-size:auto 100%;background-position:76% bottom}
  .hero::after{inset:auto 0 0 0;height:340px;background:linear-gradient(180deg,#d6c9bb 0%,rgba(214,201,187,0) 38%)}
  .hero-t{max-width:none}
  .phero-img{display:none}
  .grid3,.process{grid-template-columns:repeat(2,1fr)} .locgrid,.gallery{grid-template-columns:repeat(2,1fr)}
  .content-grid{grid-template-columns:1fr} .side{position:static}
  .ftr-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .burger{display:block}
  .nav{position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;align-items:stretch;padding:12px 16px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none;max-height:calc(100vh - 120px);overflow:auto}
  .nav.open{display:flex}
  .dd-m{position:static;display:grid;box-shadow:none;border:0;padding:0 0 6px 14px;min-width:0}
  .nav-cta{margin:8px 0 0}
  .topbar span{display:none} .topbar .wrap{justify-content:center}
}
@media (max-width:620px){
  body{font-size:16px}
  .sec{padding:52px 0} .grid3,.process,.row2,.linklist{grid-template-columns:1fr}
  .stats-in{grid-template-columns:repeat(2,1fr)} .stats-in div:nth-child(2){border-right:0} .stats-in div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .videos{grid-template-columns:1fr} .videos video{max-height:440px}
  .ftr-grid{grid-template-columns:1fr}
  .hero-in{padding:34px 0 28px} .hero{padding-bottom:230px} .hero-bg,.hero::after{height:270px} .hero-bg{background-position:80% bottom} .hero .btn-lg{width:100%;justify-content:center}
  .fab span{display:none} .fab{padding:0;width:58px;justify-content:center}
  .btns .btn{flex:1 1 100%}
  .ftr-bot{padding-bottom:88px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Ana sayfa: şeffaf üst bar + menü (hero üzerinde) */
body.home .topbar{position:absolute;top:0;left:0;right:0;z-index:51;background:transparent;color:#3b4a66}
body.home .topbar a{color:var(--navy-2)}
body.home .hdr{position:fixed;top:0;left:0;right:0;background:transparent;border-bottom:1px solid transparent;backdrop-filter:none;transition:background .25s,top .25s,box-shadow .25s}
body.home .hdr.scrolled{top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(11,42,91,.08)}
@media (max-width:860px){
  body.home .topbar{display:none}
  body.home .hdr{top:0}
  body.home .hdr:not(.scrolled){background:rgba(214,201,187,.0)}
  .hero-in{padding-top:110px}
}

/* Blog */
.bcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;color:var(--ink);box-shadow:var(--shadow-s);transition:.2s}
.bcard:hover{transform:translateY(-4px);box-shadow:var(--shadow);color:var(--ink)}
.bcard img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.bcard-b{padding:20px 22px 24px;display:flex;flex-direction:column;gap:6px}
.bcard h3{font-size:1.15rem;margin:0}.bcard p{margin:0;color:#55637d;font-size:.95rem}
.bcard .more{margin-top:6px;color:var(--orange-d);font-weight:700;display:inline-flex;gap:6px;align-items:center}