body { background-color: #f5f7fb; }
.sidebar .nav-link.active, .sidebar .nav-link:hover { background-color: rgba(255,255,255,0.1); border-radius: 6px; }
.card { border: none; box-shadow: 0 1px 3px rgba(0,0,0,0.08); border-radius: 10px; }