/* ===== YUKON – İnşaat firması statik site ===== */

:root{
  --navy-950:#0a1230;
  --navy-900:#0d1b3d;
  --navy-800:#132650;
  --ink:#15181f;
  --ink-soft:#1c1f27;
  --slate:#5b6472;
  --slate-light:#f2f3f5;
  --gold:#d9a94f;
  --paper:#ffffff;
  --text-muted:#6b7280;
  --max-w:1180px;
  --radius:2px;
  --font:'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ margin:0 0 .5em; font-weight:800; letter-spacing:-.01em; }
p{ margin:0 0 1em; }

.container{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 24px;
}

/* Buttons */
.btn{
  display:inline-block;
  padding:14px 30px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  border-radius:var(--radius);
  transition:background .2s ease, color .2s ease, border-color .2s ease;
}
.btn-outline{
  border:1.5px solid rgba(255,255,255,.85);
  color:#fff;
  background:transparent;
}
.btn-outline:hover{ background:#fff; color:var(--navy-900); }
.btn-light{
  width:100%;
  text-align:center;
  background:#e9eaec;
  color:var(--ink);
  border:none;
  cursor:pointer;
}
.btn-light:hover{ background:#dcdde0; }

/* ===== Header ===== */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  background:rgba(10,18,48,0);
  transition:background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(10,18,48,.95);
  box-shadow:0 2px 14px rgba(0,0,0,.25);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand-mark{ height:26px; width:auto; }
.brand-text{ color:#fff; font-weight:800; font-size:20px; letter-spacing:.02em; }

.nav{ display:flex; align-items:center; gap:30px; }
.nav a{
  color:#fff;
  font-size:14px;
  font-weight:500;
  opacity:.9;
}
.nav a:hover{ opacity:1; }
.nav-cta{
  border:1.5px solid rgba(255,255,255,.7);
  padding:9px 18px;
  border-radius:var(--radius);
  text-transform:uppercase;
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
}
.nav-cta:hover{ background:#fff; color:var(--navy-900); }

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:34px; height:34px;
  background:transparent;
  border:none;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:#fff;
  transition:transform .25s ease, opacity .25s ease;
}
.nav-toggle.is-active span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity:0; }
.nav-toggle.is-active span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  color:#fff;
}
.hero-media{
  position:absolute; inset:0;
  background:
    url("../images/hero.jpg") center/cover no-repeat,
    linear-gradient(160deg, #1a2540 0%, #0d1226 55%, #05070f 100%);
}
.hero-overlay{
  position:absolute; inset:0;
  background:linear-gradient(0deg, rgba(5,7,15,.92) 0%, rgba(5,7,15,.55) 45%, rgba(5,7,15,.35) 100%);
}
.hero-content{
  position:relative;
  z-index:2;
  padding-top:160px;
  padding-bottom:90px;
}
.hero-logo{
  height:36px;
  width:auto;
  margin-bottom:28px;
}
.hero h1{
  font-size:clamp(30px, 5vw, 52px);
  line-height:1.15;
  max-width:680px;
  margin-bottom:20px;
}
.hero p{
  font-size:16px;
  color:rgba(255,255,255,.8);
  max-width:480px;
  margin-bottom:32px;
}

/* ===== About / Güvenli Yapılar ===== */
.about{
  display:grid;
  grid-template-columns:1fr 1fr;
  min-height:560px;
}
.about-media{
  position:relative;
  background:
    url("../images/about.jpg") center/cover no-repeat,
    linear-gradient(160deg, #3a4256 0%, #232839 55%, #14161f 100%);
}
.about-content{
  background:var(--ink);
  display:flex;
  align-items:center;
}
.about-inner{
  padding:64px 56px;
  color:#fff;
  max-width:560px;
}
.about-inner h2{
  font-size:clamp(26px, 3.2vw, 36px);
  color:#fff;
}
.about-lead{
  color:var(--gold);
  font-weight:600;
  font-size:16px;
}
.about-inner p:not(.about-lead){
  color:rgba(255,255,255,.72);
  font-size:15px;
}

/* ===== Services ===== */
.services{ padding:88px 0; }
.eyebrow{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--navy-900);
  margin-bottom:10px;
}
.services h2{
  font-size:clamp(24px, 3vw, 32px);
  margin-bottom:40px;
}
.services-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
}
.services-grid p{
  color:var(--text-muted);
  font-size:15px;
  margin:0;
}

/* Divider */
.divider{ height:14px; background:var(--navy-900); }

/* ===== Projects ===== */
.projects{
  background:var(--slate);
  padding:80px 0;
  color:#fff;
}
.projects h2{
  color:#fff;
  font-size:clamp(24px, 3vw, 32px);
  margin-bottom:40px;
}
.projects-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:28px;
}
.project-card h3{
  font-size:14px;
  letter-spacing:.08em;
  font-weight:700;
  margin:16px 0 14px;
}
.project-media{
  aspect-ratio:4/3;
  border-radius:var(--radius);
  position:relative;
  overflow:hidden;
  background-size:cover;
  background-position:center;
}
.project-media::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,0) 55%, rgba(0,0,0,.35) 100%);
}
.project-sile{ background-image:url("../images/project-sile.jpg"); }
.project-erenkoy{ background-image:url("../images/project-erenkoy.jpg"); }
.project-umraniye{ background-image:url("../images/project-umraniye.jpg"); }

/* ===== Neden Biz ===== */
.why-us{ padding:88px 0; }
.why-us h2{
  font-size:clamp(24px, 3vw, 32px);
  margin-bottom:36px;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
}
.stat-card{
  background:var(--slate-light);
  border-radius:var(--radius);
  padding:34px 28px;
  text-align:center;
}
.stat-icon{
  width:44px; height:44px;
  margin:0 auto 18px;
  color:var(--navy-900);
}
.stat-icon svg{ width:100%; height:100%; }
.stat-label{
  display:block;
  font-size:14px;
  color:var(--text-muted);
  margin-bottom:8px;
}
.stat-value{
  display:block;
  font-size:26px;
  font-weight:800;
  color:var(--ink);
}

/* ===== Testimonials ===== */
.testimonials{
  background:var(--slate-light);
  padding:88px 0;
}
.testimonials h2{ font-size:clamp(24px, 3vw, 32px); }
.testimonials-list{ display:flex; flex-direction:column; gap:28px; }
.testimonials blockquote{
  margin:0;
  padding:26px 28px;
  background:#fff;
  border-left:3px solid var(--navy-900);
  border-radius:var(--radius);
}
.testimonials blockquote p{
  font-size:14.5px;
  color:#3a3f47;
  font-style:italic;
  margin-bottom:12px;
}
.testimonials cite{
  font-style:normal;
  font-size:13px;
  font-weight:700;
  color:var(--navy-900);
}

/* ===== Footer ===== */
.site-footer{
  position:relative;
  overflow:hidden;
  color:#fff;
  padding:100px 0 40px;
}
.footer-media{
  position:absolute; inset:0;
  background:
    url("../images/footer.jpg") center/cover no-repeat,
    linear-gradient(160deg, #26160a 0%, #14100a 55%, #060504 100%);
}
.footer-overlay{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(6,5,4,.55) 0%, rgba(6,5,4,.85) 100%);
}
.footer-content{
  position:relative;
  z-index:2;
  text-align:left;
}
.footer-logo{ height:34px; width:auto; margin-bottom:26px; }
.footer-content h2{ color:#fff; font-size:clamp(24px,3vw,32px); }
.footer-phone{
  display:inline-block;
  font-size:20px;
  font-weight:700;
  color:var(--gold);
  margin:18px 0 26px;
}
address{
  font-style:normal;
  color:rgba(255,255,255,.75);
  font-size:14px;
  line-height:1.7;
}
.footer-copy{
  margin-top:48px;
  font-size:12px;
  color:rgba(255,255,255,.45);
}

/* ===== Responsive ===== */
@media (max-width: 900px){
  .about{ grid-template-columns:1fr; }
  .about-media{ min-height:260px; }
  .about-inner{ padding:48px 28px; }
  .services-grid{ grid-template-columns:1fr; gap:24px; }
  .projects-grid{ grid-template-columns:1fr; }
  .stats-grid{ grid-template-columns:1fr; }
}

@media (max-width: 960px){
  .nav{
    position:fixed;
    top:72px; left:0; right:0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    background:rgba(10,18,48,.98);
    padding:8px 24px 20px;
    transform:translateY(-8px);
    opacity:0;
    pointer-events:none;
    transition:opacity .2s ease, transform .2s ease;
  }
  .nav.open{
    opacity:1;
    transform:translateY(0);
    pointer-events:auto;
  }
  .nav a{
    width:100%;
    padding:14px 0;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-cta{
    margin-top:10px;
    text-align:center;
    border-color:rgba(255,255,255,.5);
  }
  .nav-toggle{ display:flex; }
  .hero-content{ padding-top:130px; padding-bottom:60px; }
}

@media (max-width: 480px){
  .container{ padding:0 18px; }
  .about-inner{ padding:40px 22px; }
  .stat-card{ padding:28px 20px; }
}