/* ===== KAYA YAPI — İnşaat & Taahhüt ===== */
:root{
  --concrete:#22252A;
  --concrete-2:#2C3037;
  --concrete-3:#181A1E;
  --yellow:#F2B807;
  --yellow-dark:#d9a406;
  --white:#ffffff;
  --paper:#f4f5f7;
  --ink:#1a1c20;
  --muted:#6b7280;
  --line:#e4e6ea;
  --radius:10px;
  --radius-lg:16px;
  --shadow:0 10px 30px -12px rgba(20,22,26,.25);
  --shadow-lg:0 30px 60px -20px rgba(20,22,26,.35);
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:82px}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

h1,h2,h3,h4,.brand-text{font-family:'Archivo',sans-serif;letter-spacing:-.02em;line-height:1.05}
.hl{color:var(--yellow)}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:'Oswald',sans-serif;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;font-size:14px;
  padding:15px 30px;border-radius:var(--radius);border:2px solid transparent;
  cursor:pointer;transition:all .3s var(--ease);white-space:nowrap;
}
.btn span{transition:transform .3s var(--ease)}
.btn:hover span{transform:translateX(4px)}
.btn-primary{background:var(--yellow);color:var(--concrete);box-shadow:0 8px 24px -8px rgba(242,184,7,.6)}
.btn-primary:hover{background:var(--yellow-dark);transform:translateY(-2px);box-shadow:0 14px 30px -8px rgba(242,184,7,.7)}
.btn-outline{border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline:hover{background:#fff;color:var(--concrete);border-color:#fff}
.btn-ghost{background:var(--yellow);color:var(--concrete);padding:11px 22px}
.btn-ghost:hover{background:var(--yellow-dark)}
.btn-block{width:100%;justify-content:center;margin-top:8px}

/* ===== NAVBAR ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:20px 0;transition:all .35s var(--ease);
}
.navbar.scrolled{
  padding:12px 0;background:rgba(24,26,30,.92);
  backdrop-filter:blur(12px);box-shadow:0 8px 30px -12px rgba(0,0,0,.5);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand-mark{color:var(--yellow);font-size:26px;line-height:1}
.brand-text{font-size:23px;font-weight:800;letter-spacing:.02em;color:#fff}
.brand-text strong{color:var(--yellow);font-weight:800}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  color:rgba(255,255,255,.85);font-weight:500;font-size:15px;
  position:relative;transition:color .25s;
}
.nav-links a:not(.nav-cta):after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;
  background:var(--yellow);transition:width .3s var(--ease);
}
.nav-links a:not(.nav-cta):hover{color:#fff}
.nav-links a:not(.nav-cta):hover:after{width:100%}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.hamburger span{width:26px;height:3px;background:#fff;border-radius:3px;transition:.3s var(--ease)}
.hamburger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ===== HERO ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05)}
.hero-overlay{position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(24,26,30,.95) 0%,rgba(24,26,30,.82) 45%,rgba(24,26,30,.4) 100%);
}
.hero-grid{position:absolute;inset:0;opacity:.14;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:linear-gradient(105deg,transparent 40%,#000 100%);
  -webkit-mask-image:linear-gradient(105deg,transparent 40%,#000 100%);
}
.hero-content{position:relative;z-index:2;padding-top:100px;padding-bottom:60px;max-width:820px}
.eyebrow{
  display:inline-block;font-family:'Oswald',sans-serif;font-weight:600;
  letter-spacing:.22em;font-size:13px;color:var(--yellow);
  padding:8px 16px;border:1px solid rgba(242,184,7,.4);border-radius:40px;margin-bottom:26px;
}
.hero h1{font-size:clamp(2.6rem,6vw,5rem);font-weight:900;margin-bottom:24px}
.hero-sub{font-size:clamp(1.05rem,2vw,1.25rem);color:rgba(255,255,255,.82);max-width:640px;margin-bottom:38px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:54px}
.hero-badge{display:inline-flex;align-items:center;gap:18px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-left:4px solid var(--yellow);padding:18px 26px;border-radius:12px;backdrop-filter:blur(6px)}
.hero-badge-num{font-family:'Archivo',sans-serif;font-weight:900;font-size:2.6rem;color:var(--yellow);line-height:1}
.hero-badge-txt{font-family:'Oswald',sans-serif;font-weight:600;letter-spacing:.04em;text-transform:uppercase;font-size:14px;line-height:1.4}
.hero-badge-txt small{font-family:'Inter';text-transform:none;font-weight:400;color:rgba(255,255,255,.6);letter-spacing:0;font-size:12px}
.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;
  font-family:'Oswald';letter-spacing:.15em;font-size:12px;text-transform:uppercase;color:rgba(255,255,255,.7);
  display:flex;align-items:center;gap:8px}
.hero-scroll span{animation:bob 1.8s infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}

/* ===== TRUST STRIP ===== */
.trust-strip{background:var(--yellow);color:var(--concrete)}
.trust-inner{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap;
  padding:16px 24px;font-family:'Oswald';font-weight:600;letter-spacing:.08em;font-size:13.5px;text-transform:uppercase}
.trust-inner .dot{opacity:.5}

/* ===== SECTION BASE ===== */
.section{padding:100px 0}
.section-head{max-width:660px;margin-bottom:56px}
.section-head.reveal{}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:'Oswald';font-weight:600;
  letter-spacing:.18em;font-size:13px;text-transform:uppercase;color:var(--concrete);margin-bottom:18px}
.kicker i{width:34px;height:2px;background:var(--yellow);display:inline-block}
.kicker.light{color:#fff}
.section-head h2,.why h2,.contact h2{font-size:clamp(2rem,4vw,3.1rem);font-weight:800;margin-bottom:18px}
.section-head p{color:var(--muted);font-size:1.08rem}

/* ===== PROJECTS ===== */
.projects{background:var(--paper)}
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.filter-btn{
  font-family:'Oswald';font-weight:600;letter-spacing:.05em;text-transform:uppercase;font-size:14px;
  padding:11px 24px;border:2px solid var(--line);background:#fff;color:var(--concrete);
  border-radius:40px;cursor:pointer;transition:all .28s var(--ease);
}
.filter-btn:hover{border-color:var(--concrete)}
.filter-btn.active{background:var(--concrete);color:#fff;border-color:var(--concrete)}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.project-card{
  position:relative;background:#fff;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.project-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.project-card.hide{display:none}
.project-img{position:relative;aspect-ratio:4/3;overflow:hidden}
.project-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.project-card:hover .project-img img{transform:scale(1.08)}
.status-badge{
  position:absolute;top:16px;left:16px;z-index:2;
  font-family:'Oswald';font-weight:600;letter-spacing:.05em;text-transform:uppercase;font-size:11.5px;
  padding:6px 13px;border-radius:6px;color:#fff;
}
.status-badge.done{background:#1f9d5b}
.status-badge.progress{background:var(--yellow);color:var(--concrete)}
.project-body{padding:24px 24px 28px}
.project-cat{font-family:'Oswald';font-weight:600;letter-spacing:.1em;text-transform:uppercase;font-size:12px;color:var(--yellow-dark);margin-bottom:8px}
.project-body h3{font-size:1.4rem;font-weight:700;margin-bottom:14px}
.project-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:14px;font-weight:500;padding-top:14px;border-top:1px solid var(--line)}
.no-result{text-align:center;color:var(--muted);padding:40px;font-size:1.1rem}

/* ===== STATS BAND ===== */
.stats-band{position:relative;background:var(--concrete);color:#fff;padding:80px 0;overflow:hidden}
.stats-grid-bg{position:absolute;inset:0;opacity:.08;
  background-image:linear-gradient(var(--yellow) 1px,transparent 1px),linear-gradient(90deg,var(--yellow) 1px,transparent 1px);
  background-size:48px 48px}
.stats-inner{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.stat{text-align:center;padding:10px}
.stat+ .stat{}
.stat-num{font-family:'Archivo',sans-serif;font-weight:900;font-size:clamp(2.4rem,5vw,3.6rem);color:var(--yellow);line-height:1;margin-bottom:10px}
.stat-label{font-family:'Oswald';font-weight:500;letter-spacing:.06em;text-transform:uppercase;font-size:14px;color:rgba(255,255,255,.78)}

/* ===== SERVICES ===== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:38px 30px;overflow:hidden;transition:all .35s var(--ease);
}
.service-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--yellow);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.service-card:hover{border-color:transparent;box-shadow:var(--shadow-lg);transform:translateY(-6px)}
.service-card:hover:before{transform:scaleX(1)}
.service-num{position:absolute;top:24px;right:28px;font-family:'Archivo';font-weight:900;font-size:2.6rem;color:var(--paper);z-index:0}
.service-ico{font-size:2.6rem;margin-bottom:20px;position:relative;z-index:1}
.service-card h3{font-size:1.4rem;font-weight:700;margin-bottom:12px;position:relative;z-index:1}
.service-card p{color:var(--muted);position:relative;z-index:1}

/* ===== WHY ===== */
.why-inner{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:center}
.why-media{position:relative}
.why-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);aspect-ratio:9/8;object-fit:cover;width:100%}
.why-stamp{position:absolute;bottom:-26px;right:-14px;background:var(--yellow);color:var(--concrete);
  display:flex;align-items:center;gap:16px;padding:22px 26px;border-radius:12px;box-shadow:var(--shadow-lg);max-width:320px}
.why-stamp-num{font-family:'Archivo';font-weight:900;font-size:2.6rem;line-height:1}
.why-stamp-txt{font-family:'Oswald';font-weight:500;letter-spacing:.03em;font-size:14px;line-height:1.4}
.why-text .kicker{margin-bottom:16px}
.why-text>p{color:var(--muted);font-size:1.08rem;margin-bottom:30px;max-width:560px}
.why-list{display:grid;gap:22px}
.why-list li{display:flex;gap:16px;align-items:flex-start}
.check{flex-shrink:0;width:30px;height:30px;border-radius:50%;background:var(--concrete);color:var(--yellow);
  display:grid;place-items:center;font-weight:700;font-size:15px;margin-top:2px}
.why-list strong{font-family:'Archivo';font-size:1.12rem;font-weight:700;display:block;margin-bottom:2px}
.why-list p{color:var(--muted);font-size:.98rem}

/* ===== PROCESS ===== */
.process{background:var(--concrete-3);color:#fff}
.process .section-head p{color:rgba(255,255,255,.65)}
.process .kicker{color:#fff}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.process-step{position:relative;padding:20px 0}
.process-line{position:absolute;top:38px;left:60px;right:-28px;height:2px;
  background:repeating-linear-gradient(90deg,var(--yellow) 0 8px,transparent 8px 16px);opacity:.5}
.process-num{display:inline-grid;place-items:center;width:74px;height:74px;border-radius:50%;
  background:var(--concrete-2);border:2px solid var(--yellow);color:var(--yellow);
  font-family:'Archivo';font-weight:900;font-size:1.6rem;margin-bottom:24px;position:relative;z-index:1}
.process-step h3{font-size:1.3rem;font-weight:700;margin-bottom:10px}
.process-step p{color:rgba(255,255,255,.62);font-size:.98rem}

/* ===== PARTNERS ===== */
.partners{padding:60px 0;background:var(--paper);border-top:1px solid var(--line)}
.partners-title{text-align:center;font-family:'Oswald';letter-spacing:.1em;text-transform:uppercase;font-size:13px;color:var(--muted);margin-bottom:28px}
.partners-row{display:flex;justify-content:center;align-items:center;gap:44px;flex-wrap:wrap}
.partners-row span{font-family:'Archivo';font-weight:800;font-size:1.25rem;color:#aab0b8;letter-spacing:-.01em;transition:color .3s}
.partners-row span:hover{color:var(--concrete)}

/* ===== CONTACT ===== */
.contact{position:relative;color:#fff;overflow:hidden}
.contact-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.contact-overlay{position:absolute;inset:0;background:linear-gradient(120deg,rgba(24,26,30,.97),rgba(24,26,30,.86))}
.contact-inner{position:relative;display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.contact-info>p{color:rgba(255,255,255,.75);font-size:1.08rem;margin-bottom:30px;max-width:460px}
.contact-list{display:grid;gap:14px}
.contact-list li{display:flex;align-items:center;gap:14px;color:rgba(255,255,255,.9);font-size:1rem}
.contact-list li span{width:38px;height:38px;flex-shrink:0;display:grid;place-items:center;background:rgba(242,184,7,.15);border-radius:9px;font-size:17px}
.contact-form{background:#fff;color:var(--ink);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-lg)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.field{display:flex;flex-direction:column;margin-bottom:18px}
.form-row .field{margin-bottom:0}
.field label{font-family:'Oswald';font-weight:500;letter-spacing:.04em;font-size:13px;text-transform:uppercase;color:var(--concrete);margin-bottom:8px}
.field input,.field select,.field textarea{
  font-family:'Inter';font-size:15px;padding:13px 15px;border:1.5px solid var(--line);border-radius:9px;
  background:var(--paper);transition:border-color .25s,box-shadow .25s;color:var(--ink);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--yellow);box-shadow:0 0 0 3px rgba(242,184,7,.2);background:#fff}
.field textarea{resize:vertical}
.form-success{margin-top:16px;padding:14px;background:rgba(31,157,91,.12);color:#1f9d5b;border-radius:9px;font-weight:600;text-align:center}

/* ===== FOOTER ===== */
.footer{background:var(--concrete-3);color:rgba(255,255,255,.7);padding-top:70px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:50px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:.96rem;max-width:320px}
.footer-col h4{font-family:'Archivo';color:#fff;font-size:1.05rem;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.footer-col a{display:block;color:rgba(255,255,255,.6);margin-bottom:11px;font-size:.95rem;transition:color .25s,padding-left .25s}
.footer-col a:hover{color:var(--yellow);padding-left:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.86rem;color:rgba(255,255,255,.5)}

/* ===== TO TOP ===== */
.to-top{position:fixed;bottom:28px;right:28px;z-index:90;width:52px;height:52px;border:0;border-radius:12px;
  background:var(--yellow);color:var(--concrete);font-size:22px;font-weight:700;cursor:pointer;
  box-shadow:0 10px 24px -8px rgba(242,184,7,.6);opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all .35s var(--ease)}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--yellow-dark);transform:translateY(-3px)}

/* ===== SCROLL REVEAL ===== */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ===== RESPONSIVE ===== */
@media(max-width:980px){
  .project-grid,.services-grid,.process-grid{grid-template-columns:repeat(2,1fr)}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:44px 20px}
  .why-inner,.contact-inner{grid-template-columns:1fr;gap:48px}
  .why-media{max-width:520px}
  .process-line{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(80%,320px);
    background:var(--concrete-3);flex-direction:column;justify-content:center;gap:26px;
    transform:translateX(100%);transition:transform .4s var(--ease);box-shadow:-20px 0 50px rgba(0,0,0,.4);
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{font-size:19px}
  .hamburger{display:flex;z-index:101}
  .section{padding:72px 0}
  .form-row{grid-template-columns:1fr;gap:0}
  .form-row .field{margin-bottom:18px}
  .why-stamp{position:static;margin-top:20px;max-width:none}
  .trust-inner{font-size:12px;gap:12px}
  .trust-inner .dot{display:none}
}
@media(max-width:540px){
  .project-grid,.services-grid,.process-grid,.footer-grid{grid-template-columns:1fr}
  .stats-inner{grid-template-columns:1fr;gap:34px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center}
  .footer-bottom-inner{flex-direction:column;text-align:center}
}