/* Validation styles */
.is-invalid {
    border-color: #ef4444 !important;
    background-color: #fef2f2;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #64748b;
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-info {
    background: #e0f2fe;
    border-left: 4px solid #0284c7;
    color: #075985;
}

.alert-danger {
    background: #fee2e2;
    border-left: 4px solid #ef4444;
    color: #991b1b;
}

.alert-success {
    background: #dcfce7;
    border-left: 4px solid #16a34a;
    color: #166534;
}