/* Form Messages */
.form-messages {
    margin: 15px 0;
    padding: 0;
    transition: all 0.3s ease;
}

.form-messages .alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
}

.form-messages .alert-success {
    color: #3c763d;
    background-color: #dff0d8;
    border-color: #d6e9c6;
}

.form-messages .alert-danger {
    color: #a94442;
    background-color: #f2dede;
    border-color: #ebccd1;
}

.form-messages ul {
    margin: 10px 0 0 0;
    padding-left: 20px;
}

/* Form Loading State */
.form-loading {
    position: relative;
}

.form-loading:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.form-loading.loading:after {
    opacity: 1;
    visibility: visible;
}

/* Form Fields */
.is-invalid {
    border-color: #a94442 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* Loading Button */
button[type="submit"].loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

button[type="submit"].loading:after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: button-spinner 0.6s linear infinite;
}

@keyframes button-spinner {
    to { transform: rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .form-messages .alert {
        padding: 10px;
        font-size: 14px;
    }
}