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

body{
    font-family:'Poppins',sans-serif;
    color:#333;
    background:#f5f7fb;
    line-height:1.6;
}

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

header{
    position:fixed;
    width:100%;
    top:0;
    left:0;
    background:#0b1d33;
    z-index:1000;
    box-shadow:0 3px 10px rgba(0,0,0,.15);
}

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

.logo{
    color:#fff;
    font-size:28px;
    font-weight:700;
}

.logo span{
    color:#4fc3f7;
}

nav ul{
    display:flex;
    list-style:none;
}

nav ul li{
    margin-left:30px;
}

nav ul li a{
    color:#fff;
    text-decoration:none;
    transition:.3s;
}

nav ul li a:hover{
    color:#4fc3f7;
}

.menu-btn{
    display:none;
    color:#fff;
    font-size:30px;
    cursor:pointer;
}

.hero{
    background:linear-gradient(135deg,#0b1d33,#1976d2);
    color:#fff;
    padding:180px 0 120px;
    text-align:center;
}

.hero h1{
    font-size:56px;
    margin-bottom:20px;
}

.hero p{
    font-size:20px;
    max-width:700px;
    margin:auto;
}

.btn{
    display:inline-block;
    margin-top:35px;
    padding:14px 35px;
    background:#4fc3f7;
    color:#fff;
    text-decoration:none;
    border:none;
    border-radius:40px;
    cursor:pointer;
    font-size:16px;
    transition:.3s;
}

.btn:hover{
    background:#039be5;
    transform:translateY(-3px);
}

section{
    padding:90px 0;
}

.section-title{
    text-align:center;
    font-size:38px;
    margin-bottom:25px;
    color:#0b1d33;
}

.section-text{
    max-width:900px;
    margin:auto;
    text-align:center;
    font-size:18px;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:25px;
    margin-top:50px;
}

.card{
    background:#fff;
    padding:30px;
    border-radius:15px;
    box-shadow:0 8px 20px rgba(0,0,0,.08);
    transition:.3s;
}

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

.card h3{
    color:#1976d2;
    margin-bottom:15px;
}

.tech{
    background:#eef4ff;
}

.tech-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
    gap:20px;
    margin-top:40px;
}

.tech-grid span{
    background:white;
    text-align:center;
    padding:18px;
    border-radius:10px;
    font-weight:600;
    box-shadow:0 5px 15px rgba(0,0,0,.08);
}

.contact form{
    max-width:700px;
    margin:auto;
}

.contact input,
.contact textarea{
    width:100%;
    padding:15px;
    margin-bottom:20px;
    border:1px solid #ccc;
    border-radius:8px;
    font-size:16px;
}

.contact textarea{
    min-height:170px;
    resize:vertical;
}

#message{
    margin-top:20px;
    color:green;
    text-align:center;
    font-weight:600;
}

footer{
    background:#0b1d33;
    color:white;
    text-align:center;
    padding:30px 0;
}

@media(max-width:768px){

.menu-btn{
display:block;
}

nav ul{
position:absolute;
top:70px;
left:0;
width:100%;
background:#0b1d33;
flex-direction:column;
display:none;
}

nav ul.active{
display:flex;
}

nav ul li{
margin:20px 0;
text-align:center;
}

.hero h1{
font-size:38px;
}

.hero p{
font-size:17px;
}

.section-title{
font-size:30px;
}

}