body {
    background-color: #f8f9fa;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,.075);
    border: none;
}

.table th {
    font-weight: 600;
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
}

.form-check-input:checked {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.text-break {
    word-break: break-all;
}

.nav-tabs .nav-link {
    color: #6c757d;
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
}

.nav-tabs .nav-link:hover {
    border-color: #dee2e6;
}

.nav-tabs .nav-link.active {
    color: #0d6efd;
    background-color: transparent;
    border-bottom-color: #0d6efd;
}

.badge {
    font-weight: 500;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

.modal-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
}

.alert {
    border: none;
    border-radius: 0.5rem;
}

/* Loading spinner */
.spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 0.1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .table {
        font-size: 0.875rem;
    }
    
    .btn-sm {
        padding: 0.2rem 0.4rem;
        font-size: 0.8rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}