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

body{
  font-family:Arial, sans-serif;
  background:#f5f7fb;
  color:#1f2937;
  line-height:1.6;
}

.navbar{
  position:fixed;
  top:0;
  width:100%;
  z-index:100;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 8%;
  background:rgba(255,255,255,0.9);
  backdrop-filter:blur(12px);
  box-shadow:0 10px 30px rgba(0,0,0,0.06);
}

.logo{
  font-weight:800;
  letter-spacing:1px;
  color:#0f172a;
}

.logo span{
  color:#2563eb;
}

nav a{
  text-decoration:none;
  color:#334155;
  margin-left:28px;
  font-weight:600;
}

.btn-small{
  background:#0f172a;
  color:white !important;
  padding:10px 18px;
  border-radius:30px;
}

.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  padding:120px 8% 80px;
  background:
    radial-gradient(circle at top right, rgba(37,99,235,0.25), transparent 35%),
    linear-gradient(135deg, #ffffff 0%, #eaf1ff 45%, #dce9ff 100%);
}

.hero-content{
  max-width:900px;
}

.tagline{
  color:#2563eb;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:2px;
  margin-bottom:18px;
}

h1{
  font-size:62px;
  line-height:1.05;
  color:#0f172a;
  max-width:1000px;
}

.hero-text{
  font-size:22px;
  max-width:760px;
  margin:28px 0;
  color:#475569;
}

.hero-buttons{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}

.btn-primary,
.btn-secondary{
  display:inline-block;
  text-decoration:none;
  padding:15px 26px;
  border-radius:40px;
  font-weight:700;
}

.btn-primary{
  background:#2563eb;
  color:white;
  box-shadow:0 16px 30px rgba(37,99,235,0.3);
}

.btn-secondary{
  background:white;
  color:#0f172a;
  border:1px solid #cbd5e1;
}

.section{
  padding:90px 8%;
}

.section h2{
  font-size:40px;
  margin-bottom:24px;
  color:#0f172a;
}

.section > p{
  max-width:850px;
  font-size:20px;
  color:#475569;
}

.dark{
  background:#0f172a;
}

.dark h2{
  color:white;
}

.cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}

.card{
  background:white;
  padding:32px;
  border-radius:22px;
  box-shadow:0 20px 40px rgba(0,0,0,0.08);
}

.card h3,
.project-list h3{
  font-size:22px;
  margin-bottom:12px;
  color:#0f172a;
}

.card p,
.project-list p{
  color:#64748b;
}

.project-list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}

.project-list div{
  background:white;
  border:1px solid #e2e8f0;
  padding:28px;
  border-radius:20px;
}

.contact{
  text-align:center;
  background:#eef4ff;
}

.contact p{
  margin:0 auto 28px;
}

footer{
  text-align:center;
  padding:30px;
  background:#0f172a;
  color:#cbd5e1;
}

@media(max-width:850px){
  .navbar{
    flex-direction:column;
    gap:14px;
  }

  nav a{
    margin:0 8px;
    font-size:14px;
  }

  h1{
    font-size:42px;
  }

  .cards,
  .project-list{
    grid-template-columns:1fr;
  }

  .hero{
    padding-top:160px;
  }
}