/* v1 — "Kıyı Endüstriyel": geniş boşluk, tek-köşe 120px imza formu, beyaz üstünde
   logo mavisi bloklar. heidelbergmaterials.co.uk düzen dilinden esinlenilmiştir. */

/* ---------------------------------------------------------------- header */
.hdr{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid transparent;
  transition:border-color .25s,box-shadow .25s}
.hdr.stuck{border-color:var(--cizgi);box-shadow:0 6px 26px rgba(var(--golge),.07)}
.hdr-in{display:flex;align-items:center;gap:1.5rem;min-height:88px}
.logo img{height:52px;width:auto}
.hdr-sp{flex:1}
.hdr-tel{display:flex;align-items:center;gap:.5rem;font-weight:500;font-size:.94rem;color:var(--marka-koyu)}
.hdr-tel svg{width:18px;height:18px;fill:var(--aksan);flex:none}
.hdr-tel:hover{color:var(--aksan-koyu)}
.mtoggle{display:flex;align-items:center;gap:.6rem;background:none;border:0;cursor:pointer;
  font:500 .96rem Lexend,sans-serif;color:var(--marka-koyu);padding:.55rem .2rem}
.mtoggle .bars{display:grid;gap:4px;width:26px}
.mtoggle .bars i{height:2.5px;background:var(--marka);border-radius:2px;transition:transform .3s,opacity .2s}
.mtoggle[aria-expanded=true] .bars i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.mtoggle[aria-expanded=true] .bars i:nth-child(2){opacity:0}
.mtoggle[aria-expanded=true] .bars i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* mega menü */
.mega{position:fixed;inset:88px 0 auto;background:#fff;border-bottom:1px solid var(--cizgi);
  box-shadow:0 24px 50px rgba(var(--golge),.12);z-index:59;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:2rem 2.5rem;
  padding:2.75rem var(--ic) 3.25rem;max-height:calc(100vh - 88px);overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-14px);transition:.3s}
.mega.open{opacity:1;visibility:visible;transform:none}
.mega .col > span{display:block;font:700 .78rem/1 "Lexend Exa",sans-serif;letter-spacing:.14em;
  text-transform:uppercase;color:var(--gri);margin-bottom:1rem}
.mega a{display:block;padding:.42rem 0;font-weight:500;color:var(--marka-koyu);
  border-bottom:1px solid transparent;width:fit-content}
.mega a:hover{color:var(--aksan-koyu);border-color:var(--aksan)}
.mega .col.hi{background:var(--marka-sis);padding:1.5rem;border-radius:0 0 44px 0}
body.locked{overflow:hidden}

/* ---------------------------------------------------------------- butonlar */
.btn{display:inline-flex;align-items:center;gap:.6rem;padding:.95rem 1.7rem;
  font:500 1rem/1 Lexend,sans-serif;border:2px solid transparent;cursor:pointer;
  transition:background .22s,color .22s,border-color .22s,transform .22s}
.btn svg{width:15px;height:15px;fill:currentColor;transition:transform .22s}
.btn:hover svg{transform:translateX(4px)}
.btn-yesil{background:var(--aksan-koyu);color:#fff}
.btn-yesil:hover{background:var(--aksan)}
.btn-hat{border-color:var(--marka-koyu);color:var(--marka-koyu);background:none}
.btn-hat:hover{background:var(--marka-koyu);color:#fff}
.btn-beyaz{border-color:#fff;color:#fff;background:none}
.btn-beyaz:hover{background:#fff;color:var(--marka-koyu)}
.btn-dolu{background:var(--marka-koyu);color:#fff}
.btn-dolu:hover{background:var(--marka)}

/* yan sabit teklif sekmesi */
.yan{position:fixed;left:0;top:42%;z-index:55;background:var(--marka-koyu);color:#fff;
  writing-mode:vertical-rl;padding:1.5rem .72rem;border-radius:0 22px 22px 0;
  font:500 .88rem/1 Lexend,sans-serif;letter-spacing:.04em;
  box-shadow:0 10px 30px rgba(var(--golge),.25);transition:background .25s,padding .25s}
.yan:hover{background:var(--aksan-koyu);padding-left:1.05rem}
@media (max-width:900px){.yan{display:none}}

/* ---------------------------------------------------------------- hero */
.hero{padding:clamp(2rem,4vw,3.5rem) 0 var(--bolum)}
.hero h1{max-width:22ch;margin-bottom:clamp(1.75rem,4vw,3rem)}
.hero h1 em{font-style:normal;color:var(--aksan)}
.slider{position:relative}
.slide{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);align-items:center}
.slide:not(.on){display:none}
.slide-kart{background:var(--marka-koyu);color:#fff;padding:clamp(2rem,4vw,3.25rem);
  border-radius:0 0 0 var(--r);grid-area:1/1/2/2;position:relative;z-index:2;
  min-height:clamp(260px,26vw,360px);display:flex;flex-direction:column;justify-content:flex-end;
  margin-right:-9%;margin-top:16%}
.slide-kart h2{color:#fff;font-size:clamp(1.5rem,2.7vw,2.35rem);margin-bottom:.85rem}
.slide-kart p{color:var(--ac1);font-size:1.02rem;margin-bottom:1.6rem}
.slide-kart .btn{align-self:flex-start;margin-bottom:-2.9rem;position:relative;z-index:3}
.slide-gor{grid-area:1/2/2/3;border-radius:0 0 var(--r) 0;overflow:hidden;aspect-ratio:16/11}
.slide-gor img{width:100%;height:100%;object-fit:cover}
.slider-nav{display:flex;gap:.4rem;align-items:center;margin-top:clamp(2.75rem,5vw,4rem)}
.slider-nav button{width:48px;height:48px;border:2px solid var(--cizgi);background:#fff;cursor:pointer;
  display:grid;place-items:center;transition:.2s;border-radius:2px}
.slider-nav button svg{width:20px;height:20px;fill:var(--marka-koyu)}
.slider-nav button:hover{border-color:var(--marka);background:var(--marka-sis)}
.slider-nav .dots{display:flex;gap:.5rem;margin-left:1rem}
.slider-nav .dots i{width:26px;height:3px;background:var(--cizgi);cursor:pointer;transition:.25s}
.slider-nav .dots i.on{background:var(--aksan);width:44px}
@media (max-width:860px){
  .slide{grid-template-columns:1fr}
  .slide-gor{grid-area:1/1/2/2;border-radius:0 0 64px 0}
  .slide-kart{grid-area:2/1/3/2;margin:-4rem 0 0;border-radius:0 0 0 64px;padding-bottom:2.75rem}
  .slide-kart .btn{margin-bottom:0}
}

/* ---------------------------------------------------------------- bölüm */
.bolum{padding:var(--bolum) 0}
.bolum.tas{background:var(--tas)}
.bolum.sis{background:var(--marka-sis)}
.bolum.tight{padding:clamp(3rem,6vw,5rem) 0}
.bslik{margin-bottom:clamp(2.25rem,4vw,3.5rem);max-width:60ch}
.bslik .ust{display:inline-flex;align-items:center;gap:.6rem;margin-bottom:1rem;
  font:700 .78rem/1 "Lexend Exa",sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--gri)}
.bslik .ust::before{content:"";width:30px;height:3px;background:var(--aksan)}
.bslik p{margin-top:1.1rem;color:var(--gri-metin);font-size:1.06rem}
.lead{font-size:clamp(1.1rem,1.9vw,1.42rem);line-height:1.5;font-weight:500;color:var(--marka-koyu);
  max-width:34ch;font-family:"Lexend Exa",Lexend,sans-serif}

/* kart ızgarası */
.grid{display:grid;gap:clamp(1.75rem,3vw,2.75rem)}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(212px,1fr))}
.kart-gor{aspect-ratio:16/10;overflow:hidden;margin-bottom:1.25rem;border-radius:0 0 52px 0}
.kart-gor img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.3,1)}
.kart:hover .kart-gor img{transform:scale(1.05)}
.kart h3{margin-bottom:.6rem}
.kart p{color:var(--gri-metin);font-size:.98rem;margin-bottom:1.15rem}
.kart .btn{padding:.72rem 1.3rem;font-size:.94rem}

/* istatistik */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:clamp(1.5rem,3vw,2.5rem)}
.stat{border-top:3px solid var(--aksan);padding-top:1.35rem}
.stat b{display:block;font:700 clamp(2.4rem,5vw,3.6rem)/1 "Lexend Exa",sans-serif;color:var(--marka)}
.stat span{display:block;font-weight:600;color:var(--marka-koyu);margin:.35rem 0 .5rem;font-size:1.02rem}
.stat small{color:var(--gri-metin);font-size:.9rem;line-height:1.5;display:block}

/* iki kolon metin+görsel */
.ikili{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
  gap:clamp(2rem,5vw,4.5rem);align-items:center}
.ikili .gor{border-radius:0 0 var(--r) 0;overflow:hidden;aspect-ratio:4/3}
.ikili .gor img{width:100%;height:100%;object-fit:cover}
.ikili.ters .gor{border-radius:var(--r) 0 0 0}
@media (max-width:760px){.ikili .gor,.ikili.ters .gor{border-radius:0 0 64px 0}}

/* özellik listesi (ikonlu) */
.ozl{display:grid;gap:1.4rem}
.ozl li{list-style:none;display:grid;grid-template-columns:auto 1fr;gap:.9rem;margin:0;
  align-items:start}
.ozl li::before{content:"";width:22px;height:22px;margin-top:.2rem;flex:none;
  background:var(--aksan);
  clip-path:polygon(19% 47%,3% 63%,38% 98%,97% 39%,81% 23%,38% 66%)}
.ozl li b{display:block;color:var(--marka-koyu);font-weight:600}
.ozl li span{color:var(--gri-metin);font-size:.97rem}

/* zaman çizelgesi */
.tl{position:relative;padding-left:2.6rem}
.tl::before{content:"";position:absolute;left:8px;top:.5rem;bottom:.5rem;width:2px;background:var(--cizgi)}
.tl li{list-style:none;position:relative;margin:0 0 2rem}
.tl li::before{content:"";position:absolute;left:-2.6rem;top:.42rem;width:18px;height:18px;
  border-radius:50%;background:#fff;border:4px solid var(--marka)}
.tl li:last-child::before{border-color:var(--aksan)}
.tl b{display:block;font:700 1.18rem/1 "Lexend Exa",sans-serif;color:var(--marka);margin-bottom:.35rem}
.tl span{color:var(--metin)}

/* CTA bandı */
.cta{background:var(--marka-koyu);color:#fff;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;
  border:44px solid rgba(var(--halka),.34);border-radius:50%}
.cta .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:2.5rem;
  align-items:center;padding:clamp(3rem,6vw,5rem) 0}
.cta h2{color:#fff;max-width:28ch}
.cta p{color:var(--ac2);margin:1rem 0 0;max-width:52ch}
.cta-btns{display:flex;gap:.9rem;flex-wrap:wrap}
@media (max-width:820px){.cta .wrap{grid-template-columns:1fr}}

/* ürün akordiyon */
.acc{border-top:1px solid var(--cizgi)}
.acc details{border-bottom:1px solid var(--cizgi)}
.acc summary{cursor:pointer;list-style:none;display:grid;grid-template-columns:auto 1fr auto;
  gap:1.25rem;align-items:center;padding:1.6rem 0}
.acc summary::-webkit-details-marker{display:none}
.acc summary .no{font:700 .92rem/1 "Lexend Exa",sans-serif;color:var(--aksan);min-width:2.2rem}
.acc summary h3{font-size:clamp(1.05rem,1.7vw,1.35rem)}
.acc summary .ok{width:34px;height:34px;border:2px solid var(--cizgi);display:grid;place-items:center;
  transition:.25s;flex:none}
.acc summary .ok::before{content:"";width:11px;height:11px;border-right:2.5px solid var(--marka-koyu);
  border-bottom:2.5px solid var(--marka-koyu);transform:rotate(45deg) translate(-1px,-1px)}
.acc details[open] summary .ok{background:var(--marka-koyu);border-color:var(--marka-koyu);transform:rotate(180deg)}
.acc details[open] summary .ok::before{border-color:#fff}
.acc-ic{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:clamp(1.5rem,4vw,3rem);
  padding:0 0 2.5rem}
.acc-ic .gor{border-radius:0 0 52px 0;overflow:hidden;aspect-ratio:4/3}
.acc-ic .gor img{width:100%;height:100%;object-fit:cover}
.acc-tablo{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:1.75rem}
.acc-tablo h4{font-size:.8rem;letter-spacing:.13em;text-transform:uppercase;color:var(--gri);
  margin-bottom:.7rem;font-family:"Lexend Exa",sans-serif}
.acc-tablo ul{padding-left:1.05rem}
.acc-tablo li{font-size:.94rem;color:var(--metin)}
.acc-tablo .std li{color:var(--marka-koyu);font-weight:500}
@media (max-width:820px){.acc-ic{grid-template-columns:1fr}}

/* referans ızgarası */
.refs{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:1px;
  background:var(--cizgi);border:1px solid var(--cizgi)}
.ref{background:#fff;padding:1.75rem 1.5rem;transition:background .25s}
.ref:hover{background:var(--marka-sis)}
.ref b{display:block;font-weight:600;color:var(--marka-koyu);font-size:1.02rem;line-height:1.35}
.ref span{display:inline-block;margin-top:.6rem;font-size:.76rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--aksan);font-weight:600}

/* galeri — her 7. görsel 2x2 kaplar; sabit satır yüksekliği boşluk bırakmaz */
.gal{display:grid;grid-template-columns:repeat(auto-fill,minmax(276px,1fr));
  grid-auto-rows:216px;grid-auto-flow:dense;gap:1.15rem}
.gal a{position:relative;overflow:hidden;display:block;background:var(--tas)}
.gal a:nth-child(7n+1){grid-column:span 2;grid-row:span 2}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.7,.3,1)}
.gal a:hover img{transform:scale(1.06)}
.gal figcaption{position:absolute;inset:auto 0 0;padding:2.5rem 1rem .9rem;color:#fff;font-size:.9rem;
  background:linear-gradient(transparent,rgba(var(--golge),.82));opacity:0;transition:opacity .3s}
.gal a:hover figcaption,.gal a:focus-visible figcaption{opacity:1}
@media (max-width:640px){.gal{grid-auto-rows:200px}.gal a:nth-child(7n+1){grid-column:span 1;grid-row:span 1}}

/* santral kartları */
.santral{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:clamp(1.5rem,4vw,3.5rem);align-items:center;padding:clamp(2rem,4vw,3.25rem) 0;
  border-bottom:1px solid var(--cizgi)}
.santral:nth-of-type(even){direction:rtl}
.santral:nth-of-type(even) > *{direction:ltr}
.santral .gor{border-radius:0 0 var(--r) 0;overflow:hidden;aspect-ratio:16/10}
.santral .gor img{width:100%;height:100%;object-fit:cover}
.santral .yil{display:inline-block;background:var(--aksan);color:#fff;font-weight:600;font-size:.82rem;
  padding:.32rem .8rem;margin-bottom:.9rem;letter-spacing:.04em}
@media (max-width:800px){.santral{grid-template-columns:1fr}.santral .gor{border-radius:0 0 64px 0}}

/* iletişim */
.ilet{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:clamp(2rem,4vw,3.5rem)}
.ilet-kutu{border-left:3px solid var(--aksan);padding:.2rem 0 .2rem 1.35rem;margin-bottom:2rem}
.ilet-kutu h4{font-size:.8rem;letter-spacing:.13em;text-transform:uppercase;color:var(--gri);
  margin-bottom:.5rem;font-family:"Lexend Exa",sans-serif}
.ilet-kutu a,.ilet-kutu p{color:var(--marka-koyu);font-weight:500;margin:0;line-height:1.55}
.ilet-kutu a:hover{color:var(--aksan-koyu)}
.harita{border:0;width:100%;aspect-ratio:4/3;border-radius:0 0 52px 0;background:var(--tas)}
.form{display:grid;gap:1.1rem}
.form label{display:grid;gap:.4rem;font-size:.9rem;font-weight:500;color:var(--marka-koyu)}
.form input,.form textarea{font:400 1rem Lexend,sans-serif;padding:.85rem 1rem;border:1.5px solid var(--cizgi);
  background:#fff;color:var(--metin);border-radius:2px}
.form input:focus,.form textarea:focus{border-color:var(--marka);outline:none}
.form textarea{min-height:140px;resize:vertical}
.form .not{font-size:.86rem;color:var(--gri-metin)}
.form-iki{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
@media(max-width:560px){.form-iki{grid-template-columns:1fr}}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}   /* bot tuzağı */
.form-durum{font-size:.93rem;padding:.8rem 1rem;background:var(--tas-acik);margin:0}
.form-durum.ok{background:#e7f5ec;color:#0b5e2b;border-left:3px solid var(--aksan)}
.form-durum.hata{background:#fdeceb;color:#8a1c13;border-left:3px solid #c0392b}

/* grup şeridi */
.grup{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1px;background:rgba(255,255,255,.16)}
.grup a{background:var(--marka-derin);padding:1.4rem 1.2rem;transition:background .25s}
.grup a:hover{background:var(--marka-koyu)}
.grup b{display:block;color:#fff;font-weight:600;font-size:.98rem}
.grup span{color:var(--ac3);font-size:.82rem}

/* ---------------------------------------------------------------- footer */
.ftr{background:var(--marka-derin);color:var(--ac2);padding:clamp(3rem,5vw,4.5rem) 0 0;margin-top:0}
.ftr-ust{display:grid;grid-template-columns:minmax(240px,1.3fr) repeat(auto-fit,minmax(155px,1fr));
  gap:2.5rem;padding-bottom:3rem}
.ftr-logo{background:#fff;padding:1.1rem 1.3rem;border-radius:0 0 32px 0;width:fit-content;margin-bottom:1.4rem}
.ftr-logo img{height:46px;width:auto}
.ftr h4{color:#fff;font-size:.8rem;letter-spacing:.13em;text-transform:uppercase;margin-bottom:1rem;
  font-family:"Lexend Exa",sans-serif}
.ftr a:hover{color:#fff}
.ftr ul{list-style:none;padding:0}
.ftr li{margin:.5rem 0;font-size:.94rem}
.ftr .adres{font-size:.94rem;line-height:1.7;max-width:34ch}
.ftr-alt{border-top:1px solid rgba(255,255,255,.14);padding:1.5rem 0;display:flex;flex-wrap:wrap;
  gap:.7rem 1.5rem;align-items:center;font-size:.86rem}
.ftr-alt .sp{flex:1}
.ftr-alt a{border-bottom:1px solid rgba(255,255,255,.3)}
.vsec{display:flex;gap:.55rem;align-items:center}
.vsec a{padding:.2rem .6rem;border:1px solid rgba(255,255,255,.28);border-bottom-width:1px;font-size:.8rem}
.vsec a.on{background:var(--aksan);border-color:var(--aksan);color:#fff}

/* sayfa başlığı (iç sayfalar) */
.phead{background:var(--marka-koyu);color:#fff;padding:clamp(3rem,7vw,6rem) 0 clamp(3.5rem,8vw,6.5rem);
  position:relative;overflow:hidden}
.phead::after{content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;
  border:52px solid rgba(var(--halka),.3);border-radius:50%}
.phead .wrap{position:relative;z-index:2}
.phead h1{color:#fff;max-width:26ch}
.phead p{color:var(--ac2);margin-top:1.2rem;font-size:1.06rem}
.krumb{display:flex;flex-wrap:wrap;gap:.45rem;font-size:.84rem;color:var(--ac3);margin-bottom:1.4rem}
.krumb a:hover{color:#fff}
.krumb span{opacity:.55}
.phead-gor{margin-top:calc(-1 * clamp(2rem,5vw,4rem));position:relative;z-index:3}
.phead-gor .in{border-radius:0 0 var(--r) 0;overflow:hidden;aspect-ratio:21/8}
.phead-gor img{width:100%;height:100%;object-fit:cover}
@media (max-width:760px){.phead-gor .in{border-radius:0 0 64px 0;aspect-ratio:16/9}}

/* 404 */
.e404{min-height:64vh;display:grid;place-items:center;text-align:center;padding:var(--bolum) 0}
.e404 .kod{font:700 clamp(5rem,18vw,11rem)/.9 "Lexend Exa",sans-serif;color:var(--marka-sis)}
.e404 h1{margin:-1.5rem 0 1rem}

/* animasyon: görünüme girince yükselt */
.up{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.up.in{opacity:1;transform:none}