/* =====================================================================
   ROVAKS KİMYA — THEME 4 "AURORA"
   Canlı gradient + glassmorphism, yuvarlak & enerjik
   ===================================================================== */
:root{
  --indigo:#4f46e5; --blue:#2563eb; --cyan:#06b6d4; --teal:#14b8a6;
  --pink:#ec4899; --violet:#7c3aed;
  --bg:#f5f6fe; --bg-2:#eef0fc;
  --ink:#141a33; --slate:#4a5578; --muted:#6b7396; --line:#e5e7f5;
  --grad:linear-gradient(120deg,#4f46e5 0%,#2563eb 45%,#06b6d4 100%);
  --grad-2:linear-gradient(120deg,#7c3aed,#ec4899);
  --grad-3:linear-gradient(120deg,#06b6d4,#14b8a6);
  --font:'Poppins',system-ui,-apple-system,sans-serif;
  --wrap:1200px; --hdr:84px; --r:26px; --r-sm:16px;
  --trans:.3s cubic-bezier(.4,0,.2,1);
  --shadow:0 20px 50px rgba(79,70,229,.14);
  --shadow-sm:0 8px 24px rgba(79,70,229,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--slate);line-height:1.7;font-size:16.5px;overflow-x:hidden;overflow-x:clip;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul{list-style:none}
h1,h2,h3,h4{font-family:var(--font);font-weight:700;line-height:1.15;color:var(--ink);letter-spacing:-.02em}
::selection{background:var(--violet);color:#fff}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 26px}
.sec{padding:104px 0;position:relative}
.sec--tint{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 26%,var(--bg-2) 74%,var(--bg) 100%)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* Blob dekorasyon */
.blobs{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5}
.blob.b1{width:460px;height:460px;background:#818cf8;top:-140px;right:-90px}
.blob.b2{width:380px;height:380px;background:#22d3ee;bottom:-120px;left:-80px}
.blob.b3{width:320px;height:320px;background:#f0abfc;top:40%;left:45%}

.pill{display:inline-flex;align-items:center;gap:9px;background:rgba(255,255,255,.7);border:1px solid var(--line);border-radius:50px;padding:8px 18px;font-size:.82rem;font-weight:600;color:var(--violet);backdrop-filter:blur(8px)}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--grad-2)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--indigo);margin-bottom:14px}
.head{max-width:720px;margin-bottom:56px}
.head.mid{margin:0 auto 56px;text-align:center}
.title{font-size:clamp(2rem,4.2vw,3.2rem)}
.lead{font-size:1.15rem;color:var(--muted);margin-top:18px}
.muted{color:var(--muted)}

/* Butonlar */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:.96rem;padding:14px 28px;border-radius:50px;cursor:pointer;border:2px solid transparent;transition:var(--trans)}
.btn svg{width:18px;height:18px}
.btn--grad{background:var(--grad);color:#fff;box-shadow:0 12px 28px rgba(79,70,229,.32)}
.btn--grad:hover{transform:translateY(-3px);box-shadow:0 18px 36px rgba(79,70,229,.42)}
.btn--glass{background:rgba(255,255,255,.7);border-color:#fff;color:var(--indigo);backdrop-filter:blur(8px)}
.btn--glass:hover{background:#fff;transform:translateY(-3px)}
.btn--out{border-color:var(--line);color:var(--ink);background:#fff}
.btn--out:hover{border-color:var(--indigo);color:var(--indigo)}
.btn--white{background:#fff;color:var(--indigo)}
.btn--white:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(0,0,0,.16)}

/* Glass kart */
.glass{background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.9);border-radius:var(--r);box-shadow:var(--shadow-sm);backdrop-filter:blur(14px);transition:var(--trans)}
.glass:hover{transform:translateY(-6px);box-shadow:var(--shadow)}

/* Header */
.hdr{position:fixed;top:0;left:0;right:0;height:var(--hdr);z-index:1000;display:flex;align-items:center;transition:var(--trans)}
.nav-inner{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 26px}
.nav{display:flex;align-items:center;justify-content:space-between;padding:10px 12px 10px 22px;border-radius:50px;transition:var(--trans);margin-top:14px}
.hdr.solid .nav{background:rgba(255,255,255,.75);backdrop-filter:blur(16px);box-shadow:var(--shadow-sm);border:1px solid rgba(255,255,255,.8)}
.brand{display:flex;align-items:center;gap:11px}
.brand__mark{width:40px;height:40px}
.brand-logo{height:54px;width:auto;display:block}
.foot .brand-logo{height:34px}
.ic img{width:67%;height:67%;object-fit:contain;filter:brightness(0) invert(1) drop-shadow(0 1px 1px rgba(0,0,0,.12))}
.svc-icon-box{width:100%;max-width:260px;aspect-ratio:1/1;margin:0 auto;border-radius:var(--r);background:var(--grad);box-shadow:var(--shadow);display:grid;place-items:center}
.svc-icon-box img{width:46%;height:auto;object-fit:contain;filter:brightness(0) invert(1) drop-shadow(0 3px 6px rgba(0,0,0,.2))}
@media(max-width:980px){.svc-icon-box{order:-1;max-width:220px}}
.brand__name{font-weight:800;font-size:1.28rem;letter-spacing:-.01em;color:var(--ink)}
.brand__sub{display:block;font-size:.58rem;font-weight:600;letter-spacing:.28em;text-transform:uppercase;color:var(--indigo);margin-top:-2px}
.menu{display:flex;align-items:center;gap:4px}
.nav-drawer{display:none}
.menu a{font-size:.94rem;font-weight:500;color:var(--slate);padding:9px 16px;border-radius:50px;transition:var(--trans)}
.menu a:hover{color:var(--indigo);background:rgba(79,70,229,.08)}
.menu a.active{color:#fff;background:var(--grad)}
.nav-right{display:flex;align-items:center;gap:12px}
.lang{display:flex;background:rgba(255,255,255,.6);border:1px solid var(--line);border-radius:50px;overflow:hidden}
.lang button{border:none;background:none;font-family:var(--font);font-weight:600;font-size:.78rem;padding:7px 13px;color:var(--muted);cursor:pointer;transition:var(--trans)}
.lang button.active{background:var(--grad);color:#fff}
.cta-btn{display:inline-flex}
.burger{display:none;width:44px;height:44px;border:none;background:rgba(255,255,255,.6);border-radius:50%;cursor:pointer;position:relative}
.burger span{position:absolute;left:12px;right:12px;height:2px;background:var(--ink);border-radius:2px;transition:var(--trans)}
.burger span:nth-child(1){top:16px}.burger span:nth-child(2){top:22px}.burger span:nth-child(3){top:28px}
body.open .burger span:nth-child(1){top:22px;transform:rotate(45deg)}
body.open .burger span:nth-child(2){opacity:0}
body.open .burger span:nth-child(3){top:22px;transform:rotate(-45deg)}

/* Hero */
.hero{position:relative;padding:calc(var(--hdr) + 70px) 0 100px;overflow:hidden;background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg) 100%)}
.hero .wrap{position:relative;z-index:2}
.hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.hero h1{font-size:clamp(2.5rem,5.4vw,4.1rem);line-height:1.08}
.hero__lead{font-size:1.2rem;color:var(--muted);margin:22px 0 34px;max-width:540px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px}
.hero__stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:44px}
.hero__stats .s{background:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.9);border-radius:var(--r-sm);padding:16px 22px;backdrop-filter:blur(10px)}
.hero__stats .n{font-size:1.7rem;font-weight:800;color:var(--ink)}
.hero__stats .n span{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero__stats .l{font-size:.8rem;color:var(--muted)}
.hero__art{position:relative;height:440px}
.hero__card{position:absolute;border-radius:var(--r);padding:22px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);backdrop-filter:blur(14px)}
.hero__card .ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;color:#fff;margin-bottom:12px}
.hero__card h4{font-size:1.05rem}.hero__card p{font-size:.85rem;color:var(--muted)}
.hero__card.c1{top:0;left:0;width:230px}
.hero__card.c2{top:150px;right:0;width:240px}
.hero__card.c3{bottom:0;left:40px;width:250px}
.hero__ring{position:absolute;inset:0;display:grid;place-items:center}
.hero__ring svg{width:100%;height:100%}

/* Page hero */
.phero{position:relative;padding:calc(var(--hdr) + 60px) 0 70px;overflow:hidden;text-align:center;background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg) 100%)}
.phero .wrap{position:relative;z-index:2}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:16px;font-weight:500}
.crumb a:hover{color:var(--indigo)}.crumb span{color:var(--indigo);font-weight:600}
.phero h1{font-size:clamp(2.2rem,4.8vw,3.6rem)}
.phero p{color:var(--muted);font-size:1.12rem;margin:14px auto 0;max-width:620px}

/* Grid */
.grid{display:grid;gap:24px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{padding:32px 28px}
.card .ic{width:60px;height:60px;border-radius:18px;display:grid;place-items:center;color:#fff;margin-bottom:20px;box-shadow:0 10px 22px rgba(79,70,229,.24)}
.card .ic svg{width:28px;height:28px}
.card h3{font-size:1.24rem;margin-bottom:9px}
.card p{color:var(--muted);font-size:.97rem}
.g1{background:var(--grad)}.g2c{background:var(--grad-2)}.g3c{background:var(--grad-3)}
.g4c{background:linear-gradient(120deg,#f59e0b,#ec4899)}

/* Split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split__media{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:1/1;background:var(--grad);box-shadow:var(--shadow)}
.split__media svg{position:absolute;inset:0;width:100%;height:100%}
.split__badge{position:absolute;left:24px;bottom:24px;background:rgba(255,255,255,.85);border-radius:var(--r-sm);padding:16px 20px;backdrop-filter:blur(10px);box-shadow:var(--shadow-sm)}
.split__badge .bn{font-size:1.8rem;font-weight:800;color:var(--indigo)}
.split__badge .bl{font-size:.82rem;color:var(--muted)}
.checks{margin-top:24px;display:grid;gap:14px}
.checks li{display:flex;gap:14px;align-items:flex-start}
.checks .ic{flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--grad-3);color:#fff;display:grid;place-items:center;margin-top:2px}
.checks .ic svg{width:14px;height:14px}
.checks b{color:var(--ink);font-weight:600}

/* Ürünler */
.prod{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pcard{border-radius:var(--r);overflow:hidden;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow-sm);backdrop-filter:blur(12px);transition:var(--trans)}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.pcard__h{display:flex;align-items:center;gap:14px;padding:22px 26px}
.pcard__h .ic{width:46px;height:46px;flex:0 0 46px;border-radius:14px;display:grid;place-items:center;color:#fff}
.pcard__h .ic svg{width:24px;height:24px}
.pcard__h h3{font-size:1.12rem}
.pcard__b{padding:0 26px 24px}
.pcard__b ul{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px}
.pcard__b li{font-size:.93rem;color:var(--slate);padding-left:18px;position:relative}
.pcard__b li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--grad-2)}

/* İletişim */
.cwrap{display:grid;grid-template-columns:1fr 1.1fr;gap:44px;align-items:start}
.ci{display:flex;gap:16px;padding:20px 22px;border-radius:var(--r-sm);margin-bottom:14px}
.ci .ic{flex:0 0 48px;width:48px;height:48px;border-radius:14px;display:grid;place-items:center;color:#fff}
.ci .ic svg{width:22px;height:22px}
.ci .t{font-weight:600;color:var(--ink);font-size:.98rem}
.ci .d{color:var(--muted);font-size:.94rem}
.ci a.d:hover{color:var(--indigo)}
.form{padding:34px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.86rem;font-weight:600;color:var(--ink);margin-bottom:7px}
.field input,.field textarea,.field select{width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:14px;font-family:var(--font);font-size:.95rem;color:var(--ink);background:rgba(255,255,255,.6);transition:var(--trans)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--indigo);background:#fff;box-shadow:0 0 0 4px rgba(79,70,229,.12)}
.field textarea{resize:vertical;min-height:120px}
.fnote{font-size:.83rem;color:var(--muted);margin-top:8px}
.fok{display:none;background:rgba(20,184,166,.12);border:1px solid var(--teal);color:#0d9488;padding:14px 18px;border-radius:14px;margin-bottom:16px;font-weight:500;font-size:.94rem}
.fok.show{display:block}
.map{border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-sm);line-height:0;border:1px solid rgba(255,255,255,.9)}
.map iframe{width:100%;height:400px;border:0}

/* CTA */
.cta-band{position:relative;overflow:hidden;background:var(--grad);border-radius:32px;padding:64px;text-align:center;box-shadow:var(--shadow)}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 15% 20%,rgba(255,255,255,.22),transparent 45%),radial-gradient(circle at 85% 85%,rgba(236,72,153,.35),transparent 45%)}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(1.8rem,3.6vw,2.6rem)}
.cta-band p{color:rgba(255,255,255,.9);max-width:540px;margin:16px auto 30px}

/* Footer */
.foot{position:relative;overflow:hidden;background:#0f1430;color:#a8b0d0;padding:74px 0 0}
.foot .blob{opacity:.28}
.foot .wrap{position:relative;z-index:2}
.fgrid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:42px;padding-bottom:50px}
.foot .brand__name{color:#fff}
.fabout{color:#8b93bd;margin:18px 0;max-width:300px;font-size:.95rem}
.fsoc{display:flex;gap:11px}
.fsoc a{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.08);display:grid;place-items:center;color:#cdd3ee;transition:var(--trans)}
.fsoc a:hover{background:var(--grad);color:#fff;transform:translateY(-3px)}
.fsoc svg{width:18px;height:18px}
.fcol h4{color:#fff;font-size:1rem;margin-bottom:18px}
.fcol ul{display:grid;gap:11px}
.fcol a,.fcol li{color:#8b93bd;font-size:.94rem;transition:var(--trans)}
.fcol a:hover{color:#fff;padding-left:4px}
.fcon li{display:flex;gap:11px;margin-bottom:12px;font-size:.92rem}
.fcon .ic{color:#7c9cff;flex:0 0 18px}.fcon .ic svg{width:16px;height:16px}
.fbot{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;justify-content:center;text-align:center;flex-wrap:wrap;gap:10px;font-size:.85rem;color:#6b73a0}

.wa{position:fixed;right:22px;bottom:22px;z-index:900;width:58px;height:58px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 10px 26px rgba(37,211,102,.45);transition:var(--trans)}
.wa:hover{transform:scale(1.08)}.wa svg{width:30px;height:30px;color:#fff}

[data-rev]{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
[data-rev].in{opacity:1;transform:none}
[data-rev-d="1"]{transition-delay:.08s}[data-rev-d="2"]{transition-delay:.16s}[data-rev-d="3"]{transition-delay:.24s}

@media(max-width:980px){
  .hero__grid{grid-template-columns:1fr;gap:60px}
  .hero__art{height:400px;max-width:460px}
  .g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:40px}.split__media{order:-1;aspect-ratio:16/10}
  .prod{grid-template-columns:1fr}.cwrap{grid-template-columns:1fr;gap:32px}
  .fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .sec{padding:70px 0}
  .burger{display:block}
  .cta-btn{display:none}
  .menu{display:none}
  /* Mobil header: logo büyükken dil pili sıkışmasın */
  .nav-inner{padding:0 16px}
  .nav{padding-left:16px}
  .nav-right{gap:8px}
  .nav-right .lang{flex-shrink:0}
  .burger{flex-shrink:0}
  .brand{min-width:0}
  .brand-logo{height:auto;max-height:42px;max-width:100%}
  body.open{overflow:hidden}
  .nav-drawer{display:block;position:fixed;inset:0;z-index:2000;overflow:hidden;pointer-events:none}
  body.open .nav-drawer{pointer-events:auto}
  .nav-drawer__bg{position:absolute;inset:0;background:rgba(15,20,48,.5);opacity:0;transition:opacity .4s ease}
  body.open .nav-drawer__bg{opacity:1}
  .drawer-menu{position:absolute;top:0;right:0;bottom:0;width:min(87vw,338px);background:#fff;display:flex;flex-direction:column;align-items:stretch;gap:2px;padding:14px 0 24px;transform:translateX(100%);transition:transform .4s cubic-bezier(.4,0,.2,1);box-shadow:-24px 0 60px rgba(15,20,48,.28);overflow-y:auto;overscroll-behavior:contain}
  body.open .drawer-menu{transform:none}
  .menu__close{display:grid;place-items:center;width:42px;height:42px;margin:2px 16px 4px auto;padding:0;border:none;background:transparent;color:var(--ink);border-radius:10px;cursor:pointer}
  .menu__close:hover{background:#f1f2fb}
  .menu__close svg{width:24px;height:24px}
  .drawer-menu a{padding:15px 26px;font-size:1.06rem;font-weight:600;color:var(--ink);background:transparent;position:relative;transition:background .2s}
  .drawer-menu a:hover{background:#f6f7fe}
  .drawer-menu a.active{color:#4f46e5;background:linear-gradient(90deg,rgba(79,70,229,.10),transparent)}
  .drawer-menu a.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;border-radius:0 4px 4px 0;background:var(--grad)}
  .menu__foot{display:flex;flex-direction:column;align-items:flex-start;gap:16px;margin-top:auto;padding:22px 26px 4px;border-top:1px solid var(--line)}
  .menu__cta{width:100%;justify-content:center}
  .g4,.g3,.g2{grid-template-columns:1fr}
  .pcard__b ul,.frow{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}.cta-band{padding:42px 24px}
  .hero__card.c1,.hero__card.c2,.hero__card.c3{position:relative;top:auto;left:auto;right:auto;bottom:auto;width:100%;margin-bottom:14px}
  .hero__art{height:auto}.hero__ring{display:none}
  .hero h1{font-size:2.4rem}
}
@media(max-width:420px){ .hero h1{font-size:2rem} .title{font-size:1.7rem} }

/* Responsive güvenlik */
html{overflow-x:hidden;overflow-x:clip}
h1,h2,h3,h4,p,a,li{overflow-wrap:break-word;word-break:break-word}
img,svg,iframe,video{max-width:100%}

/* ---- Dil değiştirici (sunucu tarafı <a>) ---- */
.lang a{display:block;font-family:var(--font);font-weight:600;font-size:.78rem;padding:7px 13px;color:var(--muted);text-decoration:none;transition:var(--trans)}
.lang a:hover{color:var(--indigo)}
.lang a.active{background:var(--grad);color:#fff}
.lang a.active:hover{color:#fff}

/* ---- Footer bottom: Weblibi (siyah, yalnızca font yüksekliği) ---- */
.foot-credit{background:#000;color:#8b93bd;text-align:center;font-size:12px;line-height:1.5;padding:2px 12px}
.foot-credit a{color:#c7ccf0;font-weight:600;text-decoration:none}
.foot-credit a:hover{color:#fff;text-decoration:underline}

/* ---- Form session uyarısı (flash) ---- */
.flash{border-radius:16px;padding:15px 20px;margin-bottom:28px;font-weight:500;border:1px solid;font-size:.98rem}
.flash--success{background:rgba(20,184,166,.12);border-color:var(--teal);color:#0d9488}
.flash--error{background:rgba(236,72,153,.10);border-color:var(--pink);color:#be185d}

/* ---- Hata sayfaları (404 / 403 / 500) ---- */
.error-sec{position:relative;overflow:hidden;padding-top:calc(var(--hdr) + 80px);min-height:72vh;display:flex;align-items:center;text-align:center}
.error-wrap{position:relative;z-index:2;max-width:640px;margin:0 auto}
.err-code{font-weight:800;line-height:.9;font-size:clamp(5rem,20vw,11rem);background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:6px}
.error-wrap .eyebrow{display:inline-block}
.error-wrap h1{font-size:clamp(1.8rem,4vw,2.9rem);margin:6px 0 16px}
.error-wrap p{color:var(--muted);font-size:1.12rem;margin-bottom:32px}
.err-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}