*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{

font-family:'Orbitron',sans-serif;
color:white;

background-image:url("img/background.png");
background-size:cover;
background-position:center;
background-attachment:fixed;

}

/* overlay */

body::before{

content:"";
position:fixed;

top:0;
left:0;

width:100%;
height:100%;

background:linear-gradient(
rgba(0,0,0,0.85),
rgba(0,0,0,0.95)
);

z-index:-1;

}

/* HEADER */

header{

position:fixed;

width:100%;
top:0;

display:flex;
justify-content:space-between;
align-items:center;

padding:20px 80px;

background:rgba(0,0,0,0.6);
backdrop-filter:blur(10px);

border-bottom:1px solid rgba(255,215,0,0.3);

}

.logo{

font-size:28px;
font-weight:800;
color:gold;

}

.logo span{

display:block;
font-size:12px;
color:white;

}

/* NAV */

nav a{

margin-left:30px;

text-decoration:none;
color:white;

font-size:14px;

transition:0.3s;

}

nav a:hover{

color:gold;

}

/* HERO */

.hero{

height:100vh;

display:flex;
justify-content:center;
align-items:center;

text-align:center;

}

.hero h1{

font-size:60px;

color:gold;

margin-bottom:20px;

letter-spacing:4px;

}

.hero p{

width:600px;
max-width:90%;

margin:auto;

font-size:18px;

line-height:28px;

margin-bottom:40px;

}

/* BUTTONS */

.buttons{

display:flex;
justify-content:center;
gap:20px;

}

.btn-primary{

padding:15px 40px;

background:gold;
border:none;

font-weight:700;

cursor:pointer;

}

.btn-secondary{

padding:15px 40px;

border:1px solid gold;

background:transparent;

color:white;

cursor:pointer;

}

/* FEATURES */

.features{

padding:120px 80px;

text-align:center;

}

.features h2{

color:gold;
margin-bottom:60px;

}

.feature-grid{

display:grid;

grid-template-columns:repeat(auto-fit,minmax(220px,1fr));

gap:40px;

}

.feature-card{

padding:40px;

background:rgba(0,0,0,0.6);

border:1px solid rgba(255,215,0,0.4);

transition:0.4s;

}

.feature-card:hover{

transform:translateY(-10px);

box-shadow:0 0 20px rgba(255,215,0,0.5);

}

/* SYSTEMS */

.systems{

padding:120px 80px;

background:rgba(0,0,0,0.8);

text-align:center;

}

.systems h2{

color:gold;

margin-bottom:60px;

}

.systems-grid{

display:grid;

grid-template-columns:repeat(auto-fit,minmax(250px,1fr));

gap:40px;

}

.system-box{

padding:30px;

border:1px solid rgba(255,215,0,0.4);

}

/* CTA */

.cta{

padding:100px;

text-align:center;

}

.cta h2{

margin-bottom:30px;

color:gold;

}

/* FOOTER */

footer{

text-align:center;

padding:40px;

background:black;

}