/* Sealtech – tema: koyu (varsayılan) / açık. header, hero, footer ve CTA her iki temada koyu kalır. */
:root{--bg:#07090f;--bg2:#0c111c;--card:#111826;--line:rgba(212,175,55,.24);--gold:#d4af37;--gold2:#f1d878;--gtxt:#e0bb45;--text:#e9ecf3;--muted:#98a2b8;--shadow:0 18px 44px rgba(0,0,0,.45);--grid:rgba(255,255,255,.03);--r:16px;color-scheme:dark}
:root[data-theme=light]{--bg:#f6f7fa;--bg2:#e9edf4;--card:#ffffff;--line:rgba(140,105,15,.28);--gold:#a07a12;--gold2:#7d5e0a;--gtxt:#8a6a0e;--text:#131a28;--muted:#525d72;--shadow:0 14px 34px rgba(20,30,50,.12);--grid:rgba(0,0,0,.04);color-scheme:light}
.dark{--bg:#07090f;--bg2:#0c111c;--card:#111826;--line:rgba(212,175,55,.24);--gold:#d4af37;--gold2:#f1d878;--gtxt:#e0bb45;--text:#e9ecf3;--muted:#98a2b8;--shadow:0 18px 44px rgba(0,0,0,.45);--grid:rgba(255,255,255,.03);color:var(--text)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
[dir=rtl] body{font-family:'Segoe UI',Tahoma,'Noto Sans Arabic',Arial,sans-serif}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1180px,100% - 32px);margin-inline:auto}
section{padding:92px 0;background:var(--bg)}
section.alt{background:var(--bg2)}
.eyebrow{color:var(--gtxt);letter-spacing:.22em;text-transform:uppercase;font-size:.78rem;font-weight:600}
[dir=rtl] .eyebrow{letter-spacing:0}
h2{font-size:clamp(1.8rem,3.4vw,2.6rem);line-height:1.2;margin:10px 0 14px;font-weight:700}
.lead{color:var(--muted);max-width:640px}
.gold{background:linear-gradient(120deg,var(--gold2),var(--gold) 55%,#a9831c);-webkit-background-clip:text;background-clip:text;color:transparent}
:root[data-theme=light] .gold{background:linear-gradient(120deg,#7d5e0a,#a07a12 60%,#7d5e0a);-webkit-background-clip:text;background-clip:text}
.dark .gold{background:linear-gradient(120deg,#f1d878,#d4af37 55%,#a9831c);-webkit-background-clip:text;background-clip:text}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
/* header */
header{position:fixed;inset:0 0 auto 0;z-index:50;background:rgba(7,9,15,.78);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:.3s}
header.scrolled{border-color:var(--line);background:rgba(7,9,15,.95)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand img{height:44px;width:auto}
nav ul{display:flex;gap:26px;list-style:none}
nav a{font-size:.92rem;color:var(--muted);transition:.2s}
nav a:hover,nav a.active{color:var(--gold2)}
.tools{display:flex;align-items:center;gap:10px}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang button{background:none;border:0;color:var(--muted);padding:6px 10px;font-size:.78rem;font-weight:600;cursor:pointer;letter-spacing:.04em}
.lang button.on{background:var(--gold);color:#111}
.theme{background:none;border:1px solid var(--line);color:var(--gold2);border-radius:50%;width:36px;height:36px;display:grid;place-items:center;cursor:pointer}
.theme svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8}
.theme .sun{display:none}
:root[data-theme=light] .theme .sun{display:block}
:root[data-theme=light] .theme .moon{display:none}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--gold);border-radius:10px;width:42px;height:38px;font-size:1.2rem;cursor:pointer}
/* hero */
.hero{min-height:92vh;display:flex;align-items:center;padding:120px 0 80px;position:relative;overflow:hidden;
background:radial-gradient(900px 500px at 75% 30%,rgba(27,92,255,.22),transparent 60%),radial-gradient(700px 400px at 10% 90%,rgba(212,175,55,.12),transparent 60%),var(--bg)}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(circle at 60% 40%,#000,transparent 70%)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;position:relative}
.hero h1{font-size:clamp(2.2rem,5vw,3.9rem);line-height:1.1;font-weight:800;margin:14px 0 18px}
.hero p{color:var(--muted);font-size:1.1rem;max-width:560px}
.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid var(--gold);cursor:pointer;transition:.25s;font-family:inherit;line-height:1.2}
.btn.primary{background:linear-gradient(120deg,#f1d878,#d4af37);color:#14110a;border-color:#d4af37}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(212,175,55,.3)}
.btn.ghost,.btn.mail{background:transparent;color:var(--gtxt)}
.btn.ghost:hover,.btn.mail:hover{background:rgba(212,175,55,.12)}
.hero-art{display:flex;justify-content:center}
.hero-art img{width:min(420px,80%);filter:drop-shadow(0 20px 60px rgba(212,175,55,.25));animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-12px)}}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.badges span{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.82rem;color:var(--muted);background:rgba(255,255,255,.03)}
/* marquee */
.marq{padding:18px 0;background:#0a0e18;border-block:1px solid rgba(212,175,55,.24);overflow:hidden;color:#e0bb45}
.marq .track{display:flex;gap:48px;width:max-content;animation:mq 28s linear infinite;font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:.9rem}
.marq span:after{content:"◆";margin-inline-start:48px;color:#a9831c;font-size:.6rem}
@keyframes mq{to{transform:translateX(-50%)}}
[dir=rtl] .marq .track{animation-direction:reverse}
/* about */
.about .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about .stack{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.about .stack img{border-radius:var(--r);border:1px solid var(--line);aspect-ratio:4/3;object-fit:cover;width:100%}
.about .stack img:nth-child(2){margin-top:28px}
.about p{color:var(--muted);margin-top:14px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chips a{border:1px solid var(--line);border-radius:999px;padding:6px 16px;font-size:.88rem;color:var(--gtxt);background:var(--card);transition:.2s}
.chips a:hover{border-color:var(--gold)}
/* cards */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.3s}
.card:hover{transform:translateY(-6px);border-color:var(--gold);box-shadow:var(--shadow)}
.card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.card div{padding:20px 22px 24px}
.card h3{font-size:1.15rem;margin-bottom:6px;color:var(--gtxt)}
.card p{color:var(--muted);font-size:.94rem}
.more{margin-top:32px}
/* product rows */
.rows{display:grid;gap:28px}
.row{display:grid;grid-template-columns:1fr 1.1fr;gap:36px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.row:nth-child(even) img{order:2}
.row img{width:100%;height:100%;min-height:260px;object-fit:cover}
.row .txt{padding:32px}
.row h3{font-size:1.5rem;color:var(--gtxt);margin-bottom:8px}
.row p{color:var(--muted)}
.row .use{margin-top:14px;font-size:.92rem;color:var(--text)}
.row .use b{color:var(--gtxt);font-weight:600}
.row .btn{margin-top:20px}
/* areas, steps, why */
.cols4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.tile{padding:28px 24px;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.tile svg{width:38px;height:38px;stroke:var(--gtxt);fill:none;stroke-width:1.6;margin-bottom:14px}
.tile h3{font-size:1.05rem;margin-bottom:6px}
.tile p{color:var(--muted);font-size:.92rem}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px;counter-reset:s}
.step{position:relative;padding:30px 26px;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.step:before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:linear-gradient(120deg,#f1d878,#d4af37);color:#14110a;font-weight:700;margin-bottom:16px}
.step h3{margin-bottom:6px}
.step p{color:var(--muted);font-size:.94rem}
/* gallery */
.mosaic{columns:4;column-gap:14px;margin-top:40px}
.mosaic img{width:100%;border-radius:12px;margin-bottom:14px;border:1px solid var(--line);transition:.3s;cursor:zoom-in}
.mosaic img:hover{border-color:var(--gold);transform:scale(1.02)}
.strip{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:36px}
.strip img{aspect-ratio:1;object-fit:cover;width:100%;border-radius:12px;border:1px solid var(--line)}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;z-index:100;padding:24px;cursor:zoom-out}
.lightbox.open{display:flex}
.lightbox img{max-height:90vh;border-radius:12px}
/* faq */
.faq{max-width:820px;margin-top:40px;display:grid;gap:12px}
.faq details{border:1px solid var(--line);border-radius:14px;background:var(--card);padding:0 22px}
.faq summary{cursor:pointer;padding:18px 0;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--gtxt);font-size:1.4rem;line-height:1}
.faq details[open] summary:after{content:"–"}
.faq p{color:var(--muted);padding-bottom:18px}
/* page hero, cta */
.phero{padding:150px 0 56px;background:radial-gradient(800px 360px at 80% 0,rgba(27,92,255,.2),transparent 60%),var(--bg);border-bottom:1px solid var(--line)}
.phero h1{font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.15;margin-top:10px}
.phero .lead{margin-top:12px}
.phero+section{padding-top:64px}
.cta-band{text-align:center;background:linear-gradient(135deg,rgba(212,175,55,.14),rgba(27,92,255,.14)),#080b13;border-block:1px solid var(--line);color:var(--text)}
.cta-band .cta{justify-content:center}
.cta-band .lead{margin-inline:auto}
.cta-band .phones{margin-top:18px;color:var(--muted);display:flex;gap:22px;justify-content:center;flex-wrap:wrap}
.cta-band .phones a{color:var(--gold2);font-weight:600}
/* contact */
.cwrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px}
.info{display:grid;gap:16px;align-content:start}
.ibox{display:flex;gap:16px;padding:20px;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.ibox svg{flex:none;width:26px;height:26px;stroke:var(--gtxt);fill:none;stroke-width:1.7;margin-top:2px}
.ibox small{color:var(--muted);display:block;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase}
.ibox b{display:block;font-weight:600}
.ibox a:hover{color:var(--gtxt)}
.map{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);min-height:300px}
.map iframe{width:100%;height:100%;min-height:300px;border:0}
form{margin-top:22px;display:grid;gap:12px}
input,textarea{width:100%;background:var(--card);border:1px solid var(--line);color:var(--text);border-radius:12px;padding:13px 16px;font:inherit}
textarea{min-height:110px;resize:vertical}
.formbtns{display:flex;gap:12px;flex-wrap:wrap}
.formbtns .btn{flex:1;justify-content:center}
footer{padding:36px 0;background:#05070c;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
footer a:hover{color:var(--gold2)}
.wa{position:fixed;bottom:20px;inset-inline-end:20px;z-index:60;width:56px;height:56px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.wa svg{width:30px;height:30px;fill:#fff}
.reveal{opacity:0;transform:translateY(24px);transition:.8s}
.reveal.in{opacity:1;transform:none}
@media(max-width:960px){
 .hero .wrap,.about .wrap,.cwrap,.row{grid-template-columns:1fr}
 .row:nth-child(even) img{order:0}
 .hero-art{order:-1}.hero-art img{width:200px}
 .grid,.steps{grid-template-columns:repeat(2,1fr)}.cols4{grid-template-columns:repeat(2,1fr)}.mosaic{columns:3}.strip{grid-template-columns:repeat(3,1fr)}
 .burger{display:block}
 nav{position:absolute;top:72px;inset-inline:0;background:rgba(7,9,15,.98);border-bottom:1px solid var(--line);display:none;padding:12px 24px 20px}
 nav.open{display:block}nav ul{flex-direction:column;gap:14px}
}
@media(max-width:600px){section{padding:64px 0}.grid,.cols4,.steps{grid-template-columns:1fr}.mosaic{columns:2}.strip{grid-template-columns:repeat(2,1fr)}.brand img{height:38px}.lang button{padding:5px 7px}.tools{gap:6px}.row .txt{padding:22px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}
:root[data-theme=light] .dark .gold{background:linear-gradient(120deg,#f1d878,#d4af37 55%,#a9831c);-webkit-background-clip:text;background-clip:text}

/* ---- modern glass menu ---- */
header{top:max(12px,env(safe-area-inset-top,0px));inset-inline:0;background:none!important;border:0!important;backdrop-filter:none;pointer-events:none}
header .nav{pointer-events:auto;position:relative;width:min(1180px,100% - 24px);height:64px;padding:0 10px 0 18px;border-radius:999px;
 background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.03)),rgba(10,14,24,.55);
 border:1px solid rgba(255,255,255,.12);box-shadow:0 10px 40px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.18),inset 0 0 0 1px rgba(212,175,55,.06);
 -webkit-backdrop-filter:blur(22px) saturate(160%);backdrop-filter:blur(22px) saturate(160%);transition:.3s}
header.scrolled .nav{background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.04)),rgba(8,11,19,.78);border-color:rgba(212,175,55,.3)}
.brand img{height:38px}
nav ul{gap:4px;align-items:center}
nav a{display:block;padding:9px 16px;border-radius:999px;font-weight:500;color:#c3cada}
nav a:hover{background:rgba(255,255,255,.08);color:#fff}
nav a.active{background:linear-gradient(120deg,rgba(241,216,120,.22),rgba(212,175,55,.12));color:#f1d878;box-shadow:inset 0 0 0 1px rgba(212,175,55,.35)}
.lang{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.lang button{padding:7px 11px}
.theme{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14)}
.burger{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0}
.burger i{display:block;width:18px;height:2px;background:#f1d878;border-radius:2px;transition:.3s}
.burger.x i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.x i:nth-child(2){opacity:0}
.burger.x i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.phero{padding-top:160px}
.hero{padding-top:130px}
.credit{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);justify-content:center!important;font-size:.82rem;letter-spacing:.04em;gap:6px!important}
.credit b{font-weight:600;letter-spacing:.14em;text-transform:uppercase;background:linear-gradient(120deg,#f1d878,#d4af37);-webkit-background-clip:text;background-clip:text;color:transparent}
footer{padding-bottom:max(28px,env(safe-area-inset-bottom,0px))}
@media(max-width:960px){
 header .nav{height:60px;padding:0 9px 0 14px}
 .burger{display:flex}
 nav{display:block;position:absolute;top:calc(100% + 10px);inset-inline:0;padding:10px;border-radius:26px;
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.04)),rgba(10,14,24,.9);
  border:1px solid rgba(255,255,255,.14);box-shadow:0 24px 60px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.2);
  -webkit-backdrop-filter:blur(26px) saturate(170%);backdrop-filter:blur(26px) saturate(170%);
  opacity:0;visibility:hidden;transform:translateY(-10px) scale(.98);transform-origin:top;transition:.28s}
 nav.open{opacity:1;visibility:visible;transform:none}
 nav ul{flex-direction:column;gap:4px;align-items:stretch}
 nav a{padding:15px 18px;font-size:1.02rem;border-radius:16px}
}
@media(max-width:600px){.brand img{height:34px}.lang button{padding:6px 7px;font-size:.72rem}.theme{width:34px;height:34px}.phero{padding-top:130px}}