*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Poppins",sans-serif;color:#fff;background:#0f1117;scroll-behavior:smooth}
.container{max-width:1300px;margin:auto;padding:0 40px}

/* HEADER */
header{
  position:fixed;top:0;width:100%;z-index:1000;
  height:80px;transition:all .3s ease;
}
.header-bg{
  position:absolute;inset:0;
  background:rgba(15,17,23,0.85); /* sade yarı saydam siyah */
  backdrop-filter:blur(15px);
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.header-container{position:relative;display:flex;justify-content:space-between;align-items:center;height:80px}
.logo-area{display:flex;align-items:center;gap:10px}
.logo-img{height:55px;width:auto;filter:none}
nav a{margin-left:30px;text-decoration:none;color:#ccc;font-weight:500;position:relative;transition:color .3s}
nav a::after{content:"";position:absolute;left:0;bottom:-5px;width:0;height:2px;background:#00c6ff;transition:width .3s}
nav a:hover::after{width:100%}
nav a:hover{color:#00c6ff}

/* HERO */
.hero{
  height:100vh;
  background:url('https://images.unsplash.com/photo-1613909286521-6e7770df8a48?auto=format&fit=crop&w=1920&q=80') center/cover fixed;
  display:flex;align-items:center;justify-content:center;text-align:center;position:relative;overflow:hidden;
}
.hero .overlay{position:absolute;inset:0;background:rgba(0,0,0,0.6)}
.hero-content{position:relative;z-index:1;padding:0 20px}
.hero h1{font-size:3rem;margin-bottom:15px;color:#00c6ff;text-shadow:0 0 25px #00c6ff80;position:relative}
.hero h1::after{
  content:"";display:block;width:60px;height:2px;background:#00c6ff;margin:20px auto 0;
  animation:widthFade 2s infinite alternate;
}
@keyframes widthFade{from{width:40px;}to{width:100px;}}
.hero p{font-size:1.2rem;margin-bottom:25px;color:#ddd}
.btn{display:inline-block;padding:12px 30px;background:linear-gradient(135deg,#00c6ff,#0072ff);border-radius:30px;color:white;text-decoration:none;font-weight:600;transition:all .3s;box-shadow:0 0 20px #00c6ff30}
.btn:hover{transform:scale(1.05);box-shadow:0 0 35px #00c6ff80}
.fade-in{opacity:0;animation:fadeIn 1.5s forwards;animation-delay:.5s}
@keyframes fadeIn{to{opacity:1}}

/* PRODUCTS */
.products{padding:120px 50px;background:linear-gradient(180deg,#141820 0%,#0f1117 100%);text-align:center}
.products h2{font-size:2.2rem;color:#00c6ff;margin-bottom:50px;text-shadow:0 0 15px #00c6ff50}
.product-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}
.product-card{
  background:linear-gradient(145deg,#1b1f2b,#12141b);
  padding:40px 20px;border-radius:15px;transition:all .3s ease;position:relative;overflow:hidden;
  border:1px solid rgba(0,198,255,0.1);
  box-shadow:inset 0 0 20px rgba(0,198,255,0.05);
}
.product-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,transparent,rgba(0,198,255,0.2),transparent);
  transform:translateX(-100%);transition:transform .5s;
}
.product-card:hover::before{transform:translateX(100%)}
.product-card:hover{transform:translateY(-5px);box-shadow:0 0 25px rgba(0,198,255,0.2)}
.product-card h3{color:#00c6ff;font-weight:600;letter-spacing:.5px}

/* ABOUT */
.about{padding:100px 50px;text-align:center;background:#0f1117}
.about h2{font-size:2rem;color:#00c6ff;margin-bottom:20px;text-shadow:0 0 10px rgba(0,198,255,0.3)}
.about p{color:#ccc;max-width:800px;margin:auto;line-height:1.7}

/* CONTACT */
.contact{padding:100px 50px;background:#141820;text-align:center}
.contact h2{font-size:2rem;color:#00c6ff;margin-bottom:50px;text-shadow:0 0 10px rgba(0,198,255,0.3)}
.contact-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:50px;margin-bottom:50px}
.contact-info,.contact-form{
  background:rgba(27,31,43,0.6);
  padding:30px;border-radius:12px;width:350px;text-align:left;
  backdrop-filter:blur(12px);
  box-shadow:0 4px 25px rgba(0,0,0,0.4);
}
.contact-item h3{color:#00c6ff;margin-bottom:5px}
.contact-item p a{color:#ccc;text-decoration:none}
.contact-item p a:hover{color:#00c6ff}
.contact-form input,.contact-form textarea{
  width:100%;margin-bottom:15px;padding:10px;border:none;border-radius:6px;background:#0f1117;color:#fff
}
.contact-form button{
  width:100%;padding:12px;
  background:linear-gradient(270deg,#00c6ff,#0072ff);
  background-size:200%;
  color:#fff;font-weight:600;border:none;border-radius:6px;cursor:pointer;
  transition:all .3s;
}
.contact-form button:hover{transform:scale(1.03)}
.map-container{border-radius:12px;overflow:hidden;width:100%;max-width:800px;margin:auto}

/* FOOTER */
.footer{
  background:#0b0d11;
  padding:60px 40px 20px;
  color:#ccc;
  position:relative;
}
.footer::before{
  content:"";
  display:block;
  height:2px;
  width:100%;
  background:linear-gradient(90deg,transparent,#00c6ff,transparent);
  position:absolute;
  top:0;left:0;
}
.footer-container{display:flex;flex-wrap:wrap;justify-content:space-between;gap:40px;max-width:1300px;margin:auto}
.footer-col{flex:1 1 250px}
.footer-col h4{color:#00c6ff;margin-bottom:10px;font-size:1.1rem}
.footer-col ul{list-style:none;padding:0}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:#ccc;text-decoration:none;transition:color .3s}
.footer-col ul li a:hover{color:#00c6ff}
.footer-bottom{text-align:center;border-top:1px solid #222;margin-top:40px;padding-top:15px;font-size:.9rem;color:#888}
.footer-logo{height:70px;width:auto;filter:none}