body{font-family:Segoe UI,sans-serif}
.navbar{background:#0f172a}
.hero{height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(rgba(15,23,42,.8),rgba(15,23,42,.8)),url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f');background-size:cover}
#backToTop{position:fixed;right:20px;bottom:20px;display:none}
.card:hover{transform:translateY(-5px);transition:.3s}
.navbar-brand{
    font-size:1.6rem;
    letter-spacing:1px;
}

.navbar-nav .nav-link{
    font-weight:600;
    margin-right:10px;
    transition:0.3s;
}

.navbar-nav .nav-link:hover{
    color:#ffc107 !important;
    transform:translateY(-2px);
}

.dropdown-menu{
    border:none;
    box-shadow:0 10px 30px rgba(0,0,0,.15);
}

.btn-warning{
    border-radius:30px;
    padding:10px 25px;
}