body { background-color: #f4f6f9; }
#wrapper { min-height: 100vh; }
#sidebar {
    width: 260px;
    min-height: 100vh;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}
#sidebar .sidebar-nav { flex: 1 1 auto; overflow-y: auto; }
#sidebar .sidebar-footer { flex-shrink: 0; }
#sidebar .nav-link { border-radius: 0.375rem; padding: 0.5rem 0.75rem; }
#sidebar .nav-link:hover { background-color: rgba(255,255,255,0.1); }
@media (min-width: 992px) {
    #sidebar.offcanvas-lg {
        position: static;
        transform: none;
        visibility: visible;
    }
}
.stat-card { border-left: 4px solid #0d6efd; }
.stat-card.success { border-left-color: #198754; }
.stat-card.warning { border-left-color: #ffc107; }
.stat-card.danger { border-left-color: #dc3545; }
.login-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1e3a5f 0%, #0d6efd 100%); }
.login-card { max-width: 420px; width: 100%; }