:root{
  --navy:#0f2e4d;
  --navy-2:#163f66;
  --accent:#f4a521;
  --accent-d:#d98c0c;
  --bg:#f6f8fb;
  --text:#1d2733;
  --muted:#5f6b7a;
  --white:#fff;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,46,77,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,92%);margin:0 auto}
section{padding:70px 0}
h1,h2,h3{line-height:1.2;color:var(--navy)}
h2.section-title{font-size:clamp(1.6rem,3.5vw,2.4rem);text-align:center}
.section-sub{text-align:center;color:var(--muted);max-width:640px;margin:14px auto 46px}
.btn{
  display:inline-block;background:var(--accent);color:#3a2400;font-weight:700;
  padding:14px 28px;border-radius:50px;transition:.25s;border:none;cursor:pointer;
}
.btn:hover{background:var(--accent-d);transform:translateY(-2px)}
.btn.alt{background:transparent;color:var(--white);border:2px solid var(--white)}
.btn.alt:hover{background:var(--white);color:var(--navy)}

/* Header */
header{position:sticky;top:0;z-index:50;background:var(--navy);box-shadow:0 2px 14px rgba(0,0,0,.18)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{display:flex;align-items:center;gap:12px;color:var(--white)}
.logo img{width:46px;height:46px;flex-shrink:0}
.logo .lt{display:flex;flex-direction:column;line-height:1.1}
.logo b{font-size:1.35rem;letter-spacing:.3px}
.logo span{font-size:.72rem;color:var(--accent);letter-spacing:2px;text-transform:uppercase}
.nav ul{display:flex;gap:6px;list-style:none}
.nav ul a{color:#dce6f1;padding:10px 16px;border-radius:8px;font-weight:600;font-size:.95rem;transition:.2s}
.nav ul a:hover,.nav ul a.active{background:var(--navy-2);color:var(--white)}
.nav .call{background:var(--accent);color:#3a2400;padding:10px 18px;border-radius:50px;font-weight:700}
.nav .call:hover{background:var(--accent-d)}
.burger{display:none;background:none;border:none;color:#fff;font-size:1.7rem;cursor:pointer}

/* Hero */
.hero{
  position:relative;color:var(--white);text-align:center;
  background:linear-gradient(rgba(15,46,77,.78),rgba(15,46,77,.86)),url('img/merdiven-2.jpeg') center/cover fixed;
  padding:120px 0;
}
.hero h1{color:#fff;font-size:clamp(2rem,5.5vw,3.4rem);max-width:900px;margin:0 auto}
.hero p{max-width:640px;margin:20px auto 34px;font-size:1.1rem;color:#e6eef6}
.hero .actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Bars */
.trust{background:var(--navy-2);color:#fff;padding:28px 0}
.trust .container{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-around;text-align:center}
.trust div b{display:block;font-size:1.7rem;color:var(--accent)}
.trust div span{font-size:.9rem;color:#cdd9e6}

/* Cards grid */
.grid{display:grid;gap:26px;grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px)}
.card img{height:210px;object-fit:cover;width:100%}
.card .body{padding:22px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:1.2rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem;flex:1}
.card a.more{margin-top:16px;color:var(--accent-d);font-weight:700;font-size:.92rem}

/* Service detail blocks */
.service{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:60px}
.service:last-child{margin-bottom:0}
.service img{border-radius:var(--radius);box-shadow:var(--shadow);height:340px;width:100%;object-fit:cover}
.service:nth-child(even) .txt{order:2}
.service h3{font-size:1.5rem;margin-bottom:14px}
.service p{color:var(--muted);margin-bottom:12px}
.service ul{list-style:none;color:var(--text)}
.service ul li{padding:6px 0 6px 28px;position:relative}
.service ul li::before{content:"✓";position:absolute;left:0;color:var(--accent-d);font-weight:800}

/* Gallery */
.gallery{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.gallery a,.gallery .vid{border-radius:12px;overflow:hidden;box-shadow:var(--shadow);background:#000}
.gallery img,.gallery video{height:230px;width:100%;object-fit:cover;transition:.4s}
.gallery a:hover img{transform:scale(1.08)}
.tabs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:34px}
.tabs button{border:2px solid var(--navy);background:#fff;color:var(--navy);padding:9px 20px;border-radius:50px;font-weight:700;cursor:pointer;transition:.2s}
.tabs button.active,.tabs button:hover{background:var(--navy);color:#fff}

/* About */
.about{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.about img{border-radius:var(--radius);box-shadow:var(--shadow)}
.about h2{text-align:left;font-size:2rem;margin-bottom:18px}
.about p{color:var(--muted);margin-bottom:14px}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;margin-top:46px}
.feature{background:#fff;padding:26px;border-radius:var(--radius);box-shadow:var(--shadow);text-align:center}
.feature .ic{font-size:2rem;margin-bottom:10px}
.feature h4{color:var(--navy);margin-bottom:8px}
.feature p{color:var(--muted);font-size:.92rem}

/* Contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.info-box{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:34px}
.info-box .item{display:flex;gap:16px;align-items:flex-start;margin-bottom:24px}
.info-box .item .ic{background:var(--navy);color:#fff;width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.info-box .item b{display:block;color:var(--navy)}
.info-box .item span{color:var(--muted);font-size:.95rem}
form{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:34px;display:flex;flex-direction:column;gap:16px}
form input,form textarea{padding:13px 15px;border:1px solid #d6dee8;border-radius:10px;font-family:inherit;font-size:.96rem}
form textarea{resize:vertical;min-height:120px}
form input:focus,form textarea:focus{outline:2px solid var(--accent)}
.map{margin-top:46px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.map iframe{width:100%;height:360px;border:0;display:block}

/* CTA */
.cta{background:linear-gradient(rgba(15,46,77,.9),rgba(15,46,77,.92)),url('img/insaat-2.jpeg') center/cover;color:#fff;text-align:center}
.cta h2{color:#fff;font-size:clamp(1.6rem,4vw,2.4rem)}
.cta p{color:#dbe6f1;max-width:560px;margin:14px auto 28px}

/* Footer */
footer{background:#0a2138;color:#aebdce;padding:50px 0 24px;font-size:.92rem}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:34px;margin-bottom:30px}
footer h4{color:#fff;margin-bottom:16px;font-size:1.05rem}
footer a{color:#aebdce;display:block;padding:4px 0;transition:.2s}
footer a:hover{color:var(--accent)}
footer .logo b{color:#fff;font-size:1.3rem}
footer .logo img{width:42px;height:42px}
.copy{border-top:1px solid #1c3a57;padding-top:20px;text-align:center;color:#7d90a5}

/* Reviews */
.reviews{background:#fff}
.review-grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.review{background:var(--bg);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.review .stars{color:var(--accent);font-size:1.05rem;letter-spacing:2px;margin-bottom:12px}
.review p{color:var(--text);font-style:italic;flex:1}
.review .who{display:flex;align-items:center;gap:12px;margin-top:18px}
.review .av{width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.review .who b{display:block;color:var(--navy);font-style:normal}
.review .who span{color:var(--muted);font-size:.85rem}

/* Floating widget buttons */
.callbar{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:12px;z-index:60}
.callbar a{display:flex;align-items:center;gap:10px;padding:13px 20px;border-radius:50px;color:#fff;font-weight:700;font-size:.95rem;box-shadow:0 6px 20px rgba(0,0,0,.28);transition:.2s}
.callbar a:hover{transform:translateY(-2px) scale(1.03)}
.callbar .wa{background:#25d366}
.callbar .ph{background:var(--accent);color:#3a2400}
@media(max-width:520px){
  .callbar a span{display:none}
  .callbar a{padding:15px;border-radius:50%;font-size:1.4rem}
}

/* Lightbox */
.lb{position:fixed;inset:0;background:rgba(8,18,30,.92);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.lb.open{display:flex}
.lb img{max-width:92vw;max-height:88vh;border-radius:10px}
.lb .x{position:absolute;top:20px;right:28px;color:#fff;font-size:2.4rem;cursor:pointer;line-height:1}

@media(max-width:860px){
  .nav ul{position:fixed;inset:64px 0 auto 0;background:var(--navy);flex-direction:column;gap:0;padding:10px 0;display:none}
  .nav ul.show{display:flex}
  .nav ul a{border-radius:0;padding:14px 24px}
  .nav .call{display:none}
  .burger{display:block}
  .service,.about,.contact-wrap{grid-template-columns:1fr}
  .service:nth-child(even) .txt{order:0}
  .fgrid{grid-template-columns:1fr}
  .hero{background-attachment:scroll}
}