.hero-gradient {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.9), rgba(51, 65, 85, 0.8)), url('https://images.unsplash.com/photo-1504328345606-18bbc8c9d7d1?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1974&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}
.card-hover {
    transition: all 0.3s ease;
}
.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}
.nav-link {
    position: relative;
    transition: color 0.3s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3b82f6;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}
.pulse-blue {
    animation: pulse-blue 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
@keyframes pulse-blue {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: .8;
    }
}