*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Poppins,sans-serif;
}

html{
scroll-behavior:smooth;
}

body{
background:#f4f7fb;
color:#222;
}

.container{
width:90%;
max-width:1200px;
margin:auto;
}

header{
position:fixed;
width:100%;
background:#0d47a1;
z-index:100;
}

.nav{
display:flex;
justify-content:space-between;
align-items:center;
padding:18px 0;
}

nav{
display:flex;
gap:30px;
}

nav a{
color:white;
text-decoration:none;
font-weight:500;
}

nav a:hover{
color:#00e5ff;
}

.menu-btn{
display:none;
color:white;
font-size:25px;
cursor:pointer;
}

.hero{
height:100vh;
background:url("https://images.unsplash.com/photo-1518770660439-4636190af475") center/cover;
}

.overlay{
height:100%;
background:rgba(0,0,0,.6);
display:flex;
justify-content:center;
align-items:center;
}

.hero-content{
text-align:center;
color:white;
}

.hero h1{
font-size:55px;
margin-bottom:20px;
}

.hero p{
font-size:20px;
margin-bottom:30px;
}

.btn{
display:inline-block;
padding:15px 35px;
background:#00c6ff;
color:white;
text-decoration:none;
border-radius:50px;
}

.btn:hover{
background:#0288d1;
}

section{
padding:90px 0;
}

.section-title{
text-align:center;
font-size:35px;
margin-bottom:40px;
color:#0d47a1;
}

.center{
text-align:center;
max-width:900px;
margin:auto;
line-height:1.8;
}

.gray{
background:#eef3f8;
}

.cards{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:30px;
}

.card{
background:white;
padding:35px;
border-radius:15px;
text-align:center;
box-shadow:0 10px 20px rgba(0,0,0,.08);
transition:.3s;
}

.card:hover{
transform:translateY(-8px);
}

.card i{
font-size:50px;
color:#1976d2;
margin-bottom:20px;
}

.gallery{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:20px;
}

.gallery img{
width:100%;
border-radius:10px;
}

.contact-box{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:30px;
text-align:center;
}

footer{
background:#0d47a1;
color:white;
padding:25px;
text-align:center;
}

@media(max-width:768px){

nav{
display:none;
position:absolute;
top:70px;
left:0;
width:100%;
background:#0d47a1;
flex-direction:column;
padding:20px;
}

nav.show{
display:flex;
}

.menu-btn{
display:block;
}

.hero h1{
font-size:36px;
}

.hero p{
font-size:18px;
}

}