/* RESET */

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

body{
    font-family: Arial, sans-serif;
    line-height:1.6;
    color:#1e293b;
    background:#ffffff;
}

/* CONTAINER */

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

/* HEADER */

.header{
    background:#ffffff;
    box-shadow:0 2px 10px rgba(0,0,0,0.08);
    position:sticky;
    top:0;
    z-index:1000;
}

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

.logo img{
    width:230px;
}

.nav-links{
    list-style:none;
    display:flex;
    gap:30px;
}

.nav-links a{
    text-decoration:none;
    color:#0f172a;
    font-weight:600;
    transition:0.3s;
}

.nav-links a:hover{
    color:#0a66c2;
}

/* HERO SECTION */

.hero{
    background:
        linear-gradient(rgba(15,23,42,0.55),
        rgba(15,23,42,0.55)),
        url("images/hero.jpg");

    background-size:cover;
    background-position:center;
    height:90vh;

    display:flex;
    align-items:center;
}

.hero-content{
    color:#ffffff;
    max-width:750px;
}

.hero h1{
    font-size:58px;
    line-height:1.2;
    margin-bottom:20px;
    font-weight:700;
}

.hero p{
    font-size:20px;
    margin-bottom:35px;
    color:#e2e8f0;
}

.btn{
    background:#0a66c2;
    color:#ffffff;
    text-decoration:none;
    padding:16px 34px;
    border-radius:8px;
    display:inline-block;
    font-weight:600;
    transition:0.3s;
}

.btn:hover{
    background:#084b91;
}

/* ABOUT */

.about-preview{
    padding:90px 0;
    text-align:center;
}

.about-preview h2{
    font-size:40px;
    margin-bottom:25px;
    color:#0f172a;
}

.about-preview p{
    max-width:850px;
    margin:auto;
    color:#475569;
    font-size:18px;
}

/* SERVICES */

.services{
    padding:90px 0;
    background:#f8fafc;
}

.services h2{
    text-align:center;
    font-size:40px;
    margin-bottom:50px;
}

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

.card{
    background:#ffffff;
    padding:30px;
    border-radius:14px;
    box-shadow:0 6px 20px rgba(0,0,0,0.08);
    transition:0.3s;
}

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

.card h3{
    color:#0a66c2;
    margin-bottom:15px;
}

/* CTA */

.cta{
    background:#0f172a;
    color:#ffffff;
    text-align:center;
    padding:90px 0;
}

.cta h2{
    font-size:40px;
    margin-bottom:20px;
}

.cta p{
    margin-bottom:30px;
}

/* FOOTER */

.footer{
    background:#ffffff;
    text-align:center;
    padding:40px 0;
    border-top:1px solid #e2e8f0;
}

.footer h3{
    color:#0f172a;
    margin-bottom:15px;
}

.footer p{
    color:#475569;
    margin-bottom:8px;
}

.copyright{
    margin-top:20px;
    color:#94a3b8;
}

/* MOBILE */

@media(max-width:768px){

    .nav-container{
        flex-direction:column;
        gap:20px;
    }

    .nav-links{
        flex-wrap:wrap;
        justify-content:center;
        gap:18px;
    }

    .hero{
        height:auto;
        padding:120px 0;
    }

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

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

    .about-preview h2,
    .services h2,
    .cta h2{
        font-size:32px;
    }

}