body {
    background-image: url('site-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    margin: 0;
    height: 100vh;
    overflow: hidden;
}
body > header {
  background-color: #0e1d2b;
}
.tile {
    background-color: rgba(30, 48, 80, 0.85);
}
.tile:hover {
    background-color: rgba(30, 48, 80, 0.95);
}
.modal-content::-webkit-scrollbar {
    width: 8px;
}
.modal-content::-webkit-scrollbar-track {
    background: transparent;
}
.modal-content::-webkit-scrollbar-thumb {
    background: #475569;
    border-radius: 4px;
}
@media (max-width: 768px) {
    body {
        height: auto;
        overflow-y: auto;
    }
    .main-grid {
        height: auto;
        max-height: none;
    }
    .tile {
        min-height: 250px;
    }
}