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

:root{
  --black:#0D0D0D;
  --graphite:#1A1A1A;
  --gray:#2B2B2B;
  --steel:#7D848C;
  --white:#F5F5F5;
  --blue:#111827;
}

body{
  font-family:'Inter',sans-serif;

  background:
  radial-gradient(circle at top right, rgba(29,78,216,0.12), transparent 30%),
  radial-gradient(circle at bottom left, rgba(255,255,255,0.04), transparent 25%),
  var(--black);

  color:var(--white);
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  width:100%;
  height:100%;

  background-image:url("https://www.transparenttextures.com/patterns/asfalt-dark.png");

  opacity:0.08;
  pointer-events:none;
  z-index:-1;
}

header{
  position:fixed;
  top:0;
  width:100%;

  padding:25px 8%;

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

  z-index:999;

  backdrop-filter:blur(14px);

  background:rgba(10,10,10,0.55);

  border-bottom:1px solid rgba(255,255,255,0.05);
}

.logo{
  font-family:'Oswald',sans-serif;
  font-size:2rem;
  letter-spacing:6px;
  font-weight:700;
}

nav{
  display:flex;
  gap:40px;
}

nav a{
  color:var(--white);
  text-decoration:none;

  font-size:0.95rem;
  letter-spacing:1px;

  opacity:0.75;

  transition:0.4s;

  position:relative;
}

nav a:hover{
  opacity:1;
}

nav a::after{
  content:"";

  position:absolute;

  left:0;
  bottom:-8px;

  width:0%;
  height:1px;

  background:var(--white);

  transition:0.4s;
}

nav a:hover::after{
  width:100%;
}

.hero{
  min-height:100vh;

  position:relative;

  display:flex;
  align-items:center;

  padding:0 8%;

  overflow:hidden;
}

.hero-bg{
  position:absolute;
  inset:0;

  background:
  linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.82)),
  url("../assets/images/mountain.jpg");

  background-size:cover;
  background-position:center;

  animation:zoom 18s ease-in-out infinite alternate;

  transform:scale(1.05);
}

@keyframes zoom{

  from{
    transform:scale(1.05);
  }

  to{
    transform:scale(1.15);
  }

}

.fog{
  position:absolute;

  width:140%;
  height:140%;

  background:
  radial-gradient(circle, rgba(255,255,255,0.06), transparent 60%);

  filter:blur(80px);

  animation:fogmove 18s linear infinite alternate;
}

@keyframes fogmove{

  from{
    transform:translateX(-5%) translateY(-2%);
  }

  to{
    transform:translateX(5%) translateY(2%);
  }

}

.hero-content{
  position:relative;
  z-index:5;

  max-width:700px;
}

.hero h1{
  font-family:'Oswald',sans-serif;

  font-size:7rem;
  line-height:0.95;

  letter-spacing:8px;

  margin-bottom:25px;

  text-shadow:0 0 40px rgba(255,255,255,0.12);
}

.hero p{
  font-size:1.1rem;

  line-height:1.9;

  color:#d6d6d6;

  max-width:560px;

  margin-bottom:40px;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:12px;

  padding:18px 42px;

  text-decoration:none;
  color:var(--white);

  border:1px solid rgba(255,255,255,0.15);

  background:
  linear-gradient(
  135deg,
  rgba(255,255,255,0.12),
  rgba(255,255,255,0.03)
  );

  backdrop-filter:blur(10px);

  transition:0.4s;

  letter-spacing:2px;
  font-weight:600;

  position:relative;
  overflow:hidden;
}

.btn::before{
  content:"";

  position:absolute;

  top:0;
  left:-100%;

  width:100%;
  height:100%;

  background:
  linear-gradient(
  90deg,
  transparent,
  rgba(255,255,255,0.2),
  transparent
  );

  transition:0.6s;
}

.btn:hover::before{
  left:100%;
}

.btn:hover{
  transform:translateY(-3px);

  border-color:rgba(255,255,255,0.35);

  box-shadow:0 15px 40px rgba(255,255,255,0.08);
}

section{
  padding:130px 8%;

  position:relative;
}

.section-title{
  font-family:'Oswald',sans-serif;

  font-size:4rem;

  letter-spacing:4px;

  margin-bottom:20px;
}

.section-text{
  color:#bbbbbb;

  line-height:2;

  max-width:700px;

  margin-bottom:70px;
}

.products{
  display:grid;

  grid-template-columns:repeat(auto-fit,minmax(320px,1fr));

  gap:35px;
}

.card{
  position:relative;

  overflow:hidden;

  border-radius:24px;

  background:
  linear-gradient(
  145deg,
  rgba(255,255,255,0.06),
  rgba(255,255,255,0.02)
  );

  border:1px solid rgba(255,255,255,0.08);

  backdrop-filter:blur(14px);

  transition:0.5s;

  box-shadow:
  0 20px 40px rgba(0,0,0,0.35),
  inset 0 1px 0 rgba(255,255,255,0.05);
}

.card:hover{
  transform:translateY(-10px);

  border-color:rgba(255,255,255,0.18);

  box-shadow:
  0 25px 60px rgba(0,0,0,0.5),
  0 0 35px rgba(255,255,255,0.05);
}

.card img{
  width:100%;
  height:420px;

  object-fit:cover;

  transition:0.5s;
}

.card:hover img{
  transform:scale(1.05);
}

.card-content{
  padding:30px;
}

.card h3{
  font-family:'Oswald',sans-serif;

  font-size:2rem;

  letter-spacing:2px;

  margin-bottom:12px;
}

.card p{
  color:#b8b8b8;

  line-height:1.8;

  margin-bottom:25px;
}

.card button{
  width:100%;

  padding:16px;

  border:none;
  border-radius:14px;

  background:
  linear-gradient(to right, #F5F5F5, #bfc3c9);

  color:#0D0D0D;

  font-weight:700;

  letter-spacing:1px;

  cursor:pointer;

  transition:0.4s;
}

.card button:hover{
  transform:translateY(-2px);

  box-shadow:0 10px 30px rgba(255,255,255,0.18);
}

.premium{
  position:relative;
  overflow:hidden;
}

.premium-box{
  position:relative;
  z-index:2;

  background:
  linear-gradient(
  145deg,
  rgba(255,255,255,0.06),
  rgba(255,255,255,0.02)
  );

  border:1px solid rgba(255,255,255,0.08);

  border-radius:30px;

  padding:70px;

  backdrop-filter:blur(16px);

  box-shadow:
  0 25px 50px rgba(0,0,0,0.4),
  inset 0 1px 0 rgba(255,255,255,0.04);
}

.premium-glow{
  position:absolute;

  width:500px;
  height:500px;

  background:rgba(255,255,255,0.05);

  border-radius:50%;

  filter:blur(120px);

  top:-100px;
  right:-150px;
}

.premium h2{
  font-family:'Oswald',sans-serif;

  font-size:4rem;

  letter-spacing:4px;

  margin-bottom:25px;
}

.premium p{
  color:#d0d0d0;

  line-height:2;

  max-width:700px;

  margin-bottom:35px;
}

footer{
  padding:50px 8%;

  text-align:center;

  color:#6c6c6c;

  border-top:1px solid rgba(255,255,255,0.05);

  background:#0A0A0A;
}

@media(max-width:900px){

  .hero h1{
    font-size:4.5rem;
  }

  .section-title{
    font-size:2.8rem;
  }

  nav{
    display:none;
  }

  .premium-box{
    padding:40px;
  }

}