.validate-error {
    position: absolute;
    background-color: #fff;
    border-left: 4px solid #dc3545;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 10px 15px;
    margin-top: 5px;
    font-size: 14px;
    color: #dc3545;
    animation: fadeIn 0.3s ease-in-out;
    z-index: 1000;
}

.validate-error i {
    margin-right: 5px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group {
    position: relative;
}

.imgcode {
    border: 1px solid #ced4da;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.imgcode:hover {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}