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

html{
    scroll-behavior:smooth;
}

body{
    font-family:Arial, Helvetica, sans-serif;
    color:#333;
    line-height:1.6;
    background:#fff;
}

.container{
    width:90%;
    max-width:1100px;
    margin:auto;
}

header{
    position:sticky;
    top:0;
    background:white;
    box-shadow:0 2px 8px rgba(0,0,0,.08);
    z-index:1000;
}

.nav-container{
    display:flex;
    justify-content:space-between;
    align-items:center;
    height:70px;
}

.logo{
    color:#0099cc;
}

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

nav a{
    text-decoration:none;
    color:#333;
    font-weight:bold;
}

nav a:hover{
    color:#0099cc;
}

#menu-btn{
    display:none;
    font-size:30px;
    background:none;
    border:none;
    cursor:pointer;
}

.hero{
    height:90vh;
    background:linear-gradient(rgba(0,0,0,.5),rgba(0,0,0,.5)),
    url("https://images.unsplash.com/photo-1581578731548-c64695cc6952?auto=format&fit=crop&w=1600&q=80")
    center/cover;
    display:flex;
    align-items:center;
    text-align:center;
    color:white;
}

.hero h1{
    font-size:3rem;
}

.hero p{
    margin:20px 0;
    font-size:1.2rem;
}

.btn{
    display:inline-block;
    background:#00a9e0;
    color:white;
    padding:15px 35px;
    text-decoration:none;
    border:none;
    cursor:pointer;
    border-radius:5px;
    transition:.3s;
}

.btn:hover{
    background:#0086b3;
}

.section{
    padding:80px 0;
}

.gray{
    background:#f7f7f7;
}

.section h2{
    text-align:center;
    margin-bottom:40px;
    color:#0099cc;
}

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

.card{
    background:white;
    padding:30px;
    border-radius:8px;
    box-shadow:0 10px 25px rgba(0,0,0,.08);
    transition:.3s;
}

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

.contact form{
    display:flex;
    flex-direction:column;
    gap:20px;
    max-width:700px;
    margin:auto;
}

input,
textarea{
    padding:15px;
    border:1px solid #ddd;
    border-radius:5px;
    font-size:16px;
}

textarea{
    height:150px;
    resize:vertical;
}

footer{
    background:#222;
    color:white;
    text-align:center;
    padding:25px;
}

.fade{
    opacity:0;
    transform:translateY(40px);
    transition:1s;
}

.fade.show{
    opacity:1;
    transform:none;
}

@media(max-width:768px){

    nav{
        position:absolute;
        top:70px;
        left:0;
        width:100%;
        background:white;
        display:none;
    }

    nav.active{
        display:block;
    }

    nav ul{
        flex-direction:column;
        padding:20px;
    }

    #menu-btn{
        display:block;
    }

    .hero h1{
        font-size:2.2rem;
    }

}