/* ============================================================
   Karadeniz Su Arıtma — ortak stiller
   Sarp Studio
   ============================================================ */

:root{
  /* renk */
  --abis:#04181C; --derin:#0B2A2E; --tas:#134247; --yosun:#1C5A5C;
  --su:#3FC7B4; --isik:#8BE8DC; --sis:#EFF4F3; --duman:#F7FAF9;
  --cakil:#A9BFBD; --gri:#4A6265; --puslu:#7B9295;
  --cizgi:#DCE6E5; --cizgi-koyu:rgba(169,191,189,.16);

  /* tipografi */
  --baslik:'Bricolage Grotesque','Archivo',system-ui,sans-serif;
  --metin:'Archivo',system-ui,sans-serif;
  --t0:.95rem; --t1:1.06rem;
  --t2:clamp(1.18rem,1.5vw,1.4rem);
  --t3:clamp(1.5rem,2.4vw,2.05rem);
  --t4:clamp(2.05rem,4.2vw,3.4rem);
  --t5:clamp(2.8rem,6.4vw,5.4rem);

  /* aralık */
  --b1:.4rem; --b2:.8rem; --b3:1.2rem; --b4:1.8rem;
  --b5:2.6rem; --b6:4rem; --b7:6rem; --b8:clamp(5rem,9vw,8.5rem);

  /* gölge */
  --g1:0 1px 2px rgba(4,24,28,.05);
  --g2:0 12px 24px -14px rgba(4,24,28,.28);
  --g3:0 32px 60px -34px rgba(4,24,28,.42);

  --olcu:1320px;
  --yay:cubic-bezier(.16,1,.3,1);
  --hiz:.45s;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;background:var(--abis);-webkit-text-size-adjust:100%}
body{font-family:var(--metin);font-size:var(--t0);font-variation-settings:'wdth' 100;
  font-feature-settings:'kern' 1,'liga' 1;background:#fff;color:var(--abis);line-height:1.62;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
::selection{background:var(--su);color:var(--abis)}

h1,h2,h3{font-family:var(--baslik);font-optical-sizing:auto;text-wrap:balance;
  font-weight:750;line-height:1.03;letter-spacing:-.035em;font-variation-settings:'wdth' 96}
h1{font-size:var(--t4);letter-spacing:-.045em;font-weight:800}
h2{font-size:var(--t3);letter-spacing:-.036em}
h3{font-size:var(--t2);letter-spacing:-.024em;font-weight:700;font-variation-settings:'wdth' 100}
p{max-width:64ch;text-wrap:pretty}

.etiket{font-family:var(--metin);font-size:.68rem;font-weight:600;letter-spacing:.22em;
  color:var(--su);display:inline-flex;align-items:center;gap:.6rem}
.etiket::before{content:'';width:22px;height:1px;background:currentColor;opacity:.5}
.sayi{font-variant-numeric:tabular-nums lining-nums;font-feature-settings:'tnum' 1}
.kap{width:100%;max-width:var(--olcu);margin-inline:auto;padding-inline:clamp(1.25rem,4vw,3rem)}
:focus-visible{outline:2px solid var(--su);outline-offset:3px}
.grain{position:fixed;inset:0;z-index:200;pointer-events:none;opacity:.045;mix-blend-mode:overlay}
.ilerleme{position:fixed;top:0;left:0;height:2px;background:var(--su);z-index:150;width:0;
  transition:width .12s linear}

/* ---------------- açığa çıkma ---------------- */
[data-yumusak]{opacity:0;transform:translateY(14px);
  transition:opacity .9s var(--yay),transform .9s var(--yay)}
[data-yumusak].gorunur{opacity:1;transform:none}
.satir{display:block;overflow:hidden;padding-bottom:.05em}
.satir>span{display:block;transform:translateY(106%);transition:transform 1.05s var(--yay)}
.gorunur .satir>span{transform:none}
.satir:nth-child(2)>span{transition-delay:.07s}
.satir:nth-child(3)>span{transition-delay:.14s}

/* ---------------- üst bar ---------------- */
.ustbar{position:sticky;top:0;z-index:100;/* mega menünün konum çıpası */background:rgba(4,24,28,.92);
  backdrop-filter:blur(20px) saturate(1.35);
  border-bottom:1px solid var(--cizgi-koyu);padding-block:.35rem}
/* ana sayfada hero'nun üstüne biner, kaydırınca dolar */
.ana .ustbar{position:fixed;left:0;right:0;background:transparent;backdrop-filter:none;
  border-bottom-color:transparent;padding-block:.9rem;
  transition:background .5s var(--yay),border-color .5s,padding .5s var(--yay)}
.ana .ustbar.yapisik{background:rgba(4,24,28,.86);backdrop-filter:blur(20px) saturate(1.3);
  border-bottom-color:var(--cizgi-koyu);padding-block:.35rem}
.duyuru{display:block;text-align:center;font-size:.76rem;font-weight:600;letter-spacing:.02em;
  padding:.42rem 1rem;background:var(--su);color:var(--abis);margin:-.35rem 0 .35rem}
.duyuru a{text-decoration:underline;text-underline-offset:2px}
.ana .ustbar .duyuru{margin-top:-.9rem}
.ustbar-ic{position:relative;display:flex;align-items:center;gap:2.2rem;height:62px;color:var(--sis)}
.marka{display:flex;flex-direction:column;line-height:1;flex-shrink:0}
.marka b{font-family:var(--baslik);font-size:1.42rem;font-weight:800;letter-spacing:-.052em;
  font-variation-settings:'wdth' 90;color:#fff}
.marka span{font-size:.58rem;color:var(--su);letter-spacing:.28em;margin-top:.36rem;font-weight:600}

.menu{display:flex;gap:1.9rem;margin-left:auto;font-size:.9rem;align-items:center;list-style:none}
.menu>li{position:static}
.menu>li>a,.menu>li>button{padding:1.1rem 0;display:inline-flex;align-items:center;gap:.4rem;
  position:relative;transition:color .3s}
.menu>li>a::after,.menu>li>button::after{content:'';position:absolute;left:0;right:100%;bottom:.75rem;
  height:1px;background:var(--su);transition:right .5s var(--yay)}
.menu>li:hover>a::after,.menu>li:hover>button::after{right:0}
.ok{width:9px;height:9px;stroke:currentColor;stroke-width:2;fill:none;opacity:.55;
  transition:transform .4s var(--yay)}
.menu>li:hover .ok{transform:translateY(2px)}

.mega{
  position:absolute;top:100%;left:50%;
  width:min(1120px, calc(100vw - 2.5rem));
  max-height:calc(100vh - 100px);overflow-y:auto;
  background:rgba(255,255,255,.985);backdrop-filter:blur(24px);
  color:var(--abis);padding:2.1rem 2.2rem;display:grid;gap:.5rem 2.6rem;
  box-shadow:var(--g3);border-top:2px solid var(--su);
  opacity:0;visibility:hidden;transform:translate(-50%,-10px);
  transition:opacity .38s var(--yay),transform .38s var(--yay),visibility .38s}
.menu li:hover .mega,.menu li:focus-within .mega{
  opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-grup{padding:.3rem 0;break-inside:avoid}
.mega-grup>a{font-family:var(--baslik);font-weight:700;font-size:.97rem;letter-spacing:-.024em;
  display:block;padding:.2rem 0 .45rem;transition:color .3s}
.mega-grup>a:hover{color:var(--yosun)}
.mega-grup ul{list-style:none}
.mega-grup li a{display:block;font-size:.835rem;color:var(--gri);padding:.2rem 0 .2rem .85rem;
  border-left:1px solid var(--cizgi);
  transition:color .3s,border-color .3s,padding-left .35s var(--yay)}
.mega-grup li a:hover{color:var(--yosun);border-color:var(--su);padding-left:1.15rem}
.mega-tum{grid-column:1/-1;margin-top:.9rem;padding-top:.9rem;border-top:1px solid var(--cizgi);
  font-family:var(--baslik);font-weight:700;font-size:.9rem;color:var(--tas);display:flex;gap:.5rem;
  align-items:center;transition:color .3s,gap .3s var(--yay)}
.mega-tum:hover{color:var(--yosun);gap:.8rem}

.wa{background:var(--su);color:var(--abis);font-weight:700;font-size:.85rem;padding:.7rem 1.3rem;
  flex-shrink:0;position:relative;overflow:hidden;transition:color var(--hiz) var(--yay)}
.wa::before{content:'';position:absolute;inset:0;background:var(--isik);transform:translateY(101%);
  transition:transform var(--hiz) var(--yay)}
.wa:hover::before{transform:none}
.wa span{position:relative}
.wa svg{width:16px;height:16px;fill:currentColor;display:none;position:relative}
.mobil-ac{display:none;margin-left:auto;width:44px;height:44px;place-items:center;flex-shrink:0}

/* ---------------- mobil menü ---------------- */
.mobil-menu{position:fixed;inset:0;z-index:140;background:var(--abis);color:var(--sis);
  display:flex;flex-direction:column;overflow-y:auto;overscroll-behavior:contain;
  transform:translateX(100%);visibility:hidden;
  transition:transform .55s var(--yay),visibility .55s}
.mobil-menu.acik{transform:none;visibility:visible}
.mobil-menu-ust{display:flex;align-items:center;justify-content:space-between;
  padding:.9rem clamp(1.25rem,4vw,3rem);height:62px;border-bottom:1px solid var(--cizgi-koyu)}
.mobil-kapat{width:44px;height:44px;display:grid;place-items:center;margin-right:-.6rem}
.mobil-kapat svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.8;fill:none}
.mobil-menu nav{padding:.6rem clamp(1.25rem,4vw,3rem) 1.5rem;flex:1}
.mobil-menu nav>a,.mobil-bas{display:flex;align-items:center;justify-content:space-between;
  width:100%;padding:1.05rem 0;font-family:var(--baslik);font-size:1.35rem;font-weight:700;
  letter-spacing:-.03em;border-bottom:1px solid var(--cizgi-koyu);text-align:left;color:#fff}
.mobil-bas svg{width:14px;height:14px;stroke:var(--su);stroke-width:2;fill:none;
  transition:transform .4s var(--yay)}
.mobil-bas[aria-expanded="true"] svg{transform:rotate(180deg)}
.mobil-grup ul{list-style:none;display:none;padding:.3rem 0 .9rem;border-bottom:1px solid var(--cizgi-koyu)}
.mobil-grup.acik ul{display:block}
.mobil-grup li a{display:block;padding:.5rem 0 .5rem 1rem;font-size:.95rem;color:var(--cakil);
  border-left:1px solid var(--cizgi-koyu)}
.mobil-grup li a:active{color:#fff}
.mobil-grup li.ust a{color:var(--sis);font-weight:600;padding-left:0;border-left:0;margin-top:.5rem}
.mobil-grup li.ust:first-child a{margin-top:0}
.mobil-alt{padding:1.2rem clamp(1.25rem,4vw,3rem) 2rem;display:grid;gap:.6rem;
  border-top:1px solid var(--cizgi-koyu);background:var(--derin)}
.mobil-alt .dugme{width:100%}
.mobil-alt .tel{display:block;text-align:center;padding:.9rem;color:var(--sis);
  box-shadow:inset 0 0 0 1px rgba(169,191,189,.35);font-weight:600}
body.menu-acik{overflow:hidden}

/* ---------------- butonlar ---------------- */
.dugme{padding:1rem 1.9rem;font-weight:700;font-size:.9rem;background:var(--su);color:var(--abis);
  position:relative;overflow:hidden;transition:color var(--hiz) var(--yay);
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem}
.dugme::before{content:'';position:absolute;inset:0;background:var(--isik);transform:translateY(101%);
  transition:transform var(--hiz) var(--yay)}
.dugme:hover::before{transform:none}
.dugme span{position:relative}
.dugme.bos{background:transparent;color:var(--abis);box-shadow:inset 0 0 0 1px var(--abis)}
.dugme.bos::before{background:var(--abis)}
.dugme.bos:hover{color:#fff}
.dugme.acik-bos{background:transparent;color:var(--sis);box-shadow:inset 0 0 0 1px rgba(169,191,189,.4)}
.dugme.acik-bos::before{background:var(--sis)}
.dugme.acik-bos:hover{color:var(--abis)}

/* ---------------- kırıntı yolu ---------------- */
.kirinti{display:flex;gap:.5rem;flex-wrap:wrap;font-size:.8rem;color:var(--puslu);
  align-items:center;padding-block:1.2rem}
.kirinti a{transition:color .3s}
.kirinti a:hover{color:var(--su)}
.kirinti i{font-style:normal;opacity:.4}
.kirinti b{font-weight:500;color:var(--sis)}
.kirinti.koyu-zemin b{color:#fff}

/* ---------------- ürün kartı ---------------- */
.urun-izgara{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(1rem,1.5vw,1.6rem)}
.urun{background:#fff;display:flex;flex-direction:column;position:relative;
  box-shadow:0 0 0 1px var(--cizgi);
  transition:transform .6s var(--yay),box-shadow .6s var(--yay)}
.urun:hover{transform:translateY(-6px);box-shadow:0 0 0 1px var(--cizgi),var(--g3)}
.urun-gorsel{position:relative;aspect-ratio:1;overflow:hidden;display:block;
  background:linear-gradient(155deg,var(--duman),#DCE8E7)}
.urun-gorsel img{width:100%;height:100%;object-fit:cover;transition:transform 1.15s var(--yay)}
.urun:hover .urun-gorsel img{transform:scale(1.07)}
.urun-gorsel::after{content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(4,24,28,.38));
  opacity:0;transition:opacity .5s var(--yay)}
.urun:hover .urun-gorsel::after{opacity:1}
.incele{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:.85rem;text-align:center;
  color:#fff;font-size:.82rem;font-weight:650;letter-spacing:.02em;
  transform:translateY(100%);transition:transform .5s var(--yay)}
.urun:hover .incele{transform:none}
.rozet{position:absolute;top:.85rem;left:.85rem;z-index:2;background:var(--abis);color:var(--su);
  font-size:.67rem;font-weight:700;letter-spacing:.06em;padding:.32rem .62rem}
.stok{position:absolute;top:.85rem;right:.85rem;z-index:2;background:rgba(255,255,255,.94);
  font-size:.68rem;font-weight:600;padding:.3rem .58rem;display:flex;align-items:center;gap:.38rem}
.stok::before{content:'';width:6px;height:6px;border-radius:50%;background:#2E9E63}
.stok.yok::before{background:#C08A3E}
.urun-govde{padding:1.15rem 1.25rem 1.3rem;display:flex;flex-direction:column;flex:1}
.urun-govde b{font-size:.93rem;font-weight:600;line-height:1.44;min-height:2.75em;
  letter-spacing:-.004em}
.pullar{display:flex;gap:.32rem;flex-wrap:wrap;margin-top:.75rem}
.pullar i{font-style:normal;font-size:.69rem;color:var(--gri);padding:.2rem .5rem;
  background:var(--sis);letter-spacing:.01em}
.fiyat{margin-top:auto;padding-top:1.1rem;display:flex;align-items:baseline;gap:.55rem;flex-wrap:wrap}
.fiyat i{font-family:var(--baslik);font-style:normal;font-size:1.32rem;font-weight:750;
  letter-spacing:-.038em;font-variation-settings:'wdth' 92}
.fiyat s{font-size:.79rem;color:var(--puslu)}
.urun-wa{margin-top:.95rem;padding:.68rem;text-align:center;font-size:.84rem;font-weight:650;
  box-shadow:inset 0 0 0 1px var(--abis);position:relative;overflow:hidden;
  transition:color var(--hiz) var(--yay);display:block}
.urun-wa::before{content:'';position:absolute;inset:0;background:var(--abis);transform:translateY(101%);
  transition:transform var(--hiz) var(--yay)}
.urun-wa:hover{color:#fff}
.urun-wa:hover::before{transform:none}
.urun-wa span{position:relative}

/* ---------------- alt bilgi ---------------- */
.alt{background:var(--abis);color:var(--cakil);padding-block:var(--b6) 2rem;font-size:.88rem;
  position:relative;overflow:hidden}
.alt-cta{display:flex;justify-content:space-between;align-items:center;gap:2rem;
  padding-bottom:var(--b5);margin-bottom:var(--b5);border-bottom:1px solid var(--cizgi-koyu);
  flex-wrap:wrap}
.alt-cta h2{color:#fff;max-width:16ch}
.alt-cta p{margin-top:.7rem;max-width:38ch}
.alt-izgara{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2.5rem;
  padding-bottom:var(--b5);border-bottom:1px solid var(--cizgi-koyu)}
.alt h4{font-size:.72rem;color:#fff;margin-bottom:1.1rem;font-weight:600;letter-spacing:.16em}
.alt ul{list-style:none}
.alt li{padding:.24rem 0}
.alt a{transition:color .3s}
.alt a:hover{color:var(--su)}
.alt-son{display:flex;justify-content:space-between;padding-top:1.8rem;font-size:.78rem;
  color:#6d8584;gap:1rem;flex-wrap:wrap}
.alt-son a{color:var(--sis)}
.alt-son a:hover{color:var(--su)}
.dev-marka{font-family:var(--baslik);font-size:clamp(3rem,13vw,11rem);font-weight:800;
  letter-spacing:-.06em;font-variation-settings:'wdth' 88;line-height:.8;
  color:rgba(169,191,189,.05);margin-top:2rem;user-select:none;pointer-events:none;
  white-space:nowrap}


/* ---------------- taşma koruması ---------------- */
h1,h2,h3,.urun-govde b,.kat b,.mega-grup>a,.mega-grup li a{overflow-wrap:anywhere}
.kirinti{overflow-wrap:anywhere}
.kap{overflow-x:clip}
.mega-grup li a{white-space:normal}

@media(max-width:1100px){
  .urun-izgara{grid-template-columns:repeat(2,1fr)}
  .alt-izgara{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .menu{display:none}
  .mobil-ac{display:grid}
  .ustbar-ic{gap:1rem}
  .wa{margin-left:auto;padding:.7rem .85rem}
  .wa span{display:none}
  .wa svg{display:block}
}
@media(max-width:700px){
  .urun-izgara,.alt-izgara{grid-template-columns:1fr}
  .alt-cta{flex-direction:column;align-items:flex-start}
  .duyuru{font-size:.72rem;padding:.38rem .8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
  .satir>span{transform:none}
  [data-yumusak]{opacity:1;transform:none}
}