/* Additional custom styles */
.btn-secondary-3d {
    background: linear-gradient(45deg, #6c757d, #5a6268);
}

.btn-info-3d {
    background: linear-gradient(45deg, #17a2b8, #138496);
}

/* Form validation styles */
.invalid-feedback {
    display: block;
    color: #ff6b6b;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.was-validated .form-control:invalid {
    background-color: rgba(255, 107, 107, 0.1);
    border-color: #ff6b6b;
}

/* Loading spinner */
.spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Modal styles */
.modal-content {
    background: rgba(26, 41, 128, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 15px;
}

.modal-header {
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.modal-footer {
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        background: white !important;
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
    
    .card-header {
        background: #f8f9fa !important;
        color: black !important;
        border-bottom: 1px solid #ddd !important;
    }
    
    .table {
        color: black !important;
    }
    
    .table thead th {
        color: black !important;
        border-bottom: 1px solid #ddd !important;
    }
    
    .table tbody tr {
        border-bottom: 1px solid #ddd !important;
    }
    
    .btn-3d {
        display: none !important;
    }
}