/* Real-Time Form Validation & Rate Limiter Styles */
.ch-invalid {
    border: 2px solid #dc3545 !important;
    background-color: #fff8f8 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.2) !important;
}

.ch-valid {
    border: 2px solid #28a745 !important;
    background-color: #f8fff9 !important;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.15) !important;
}

.ch-field-feedback {
    display: block !important;
    width: 100% !important;
    margin-top: 5px !important;
    margin-bottom: 10px !important;
    font-size: 13px !important;
    line-height: 1.4 !important;
    color: #dc3545 !important;
    font-weight: 600 !important;
    text-transform: none !important;
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out !important;
    clear: both !important;
}

.ch-field-feedback.ch-feedback-hidden {
    display: none !important;
}

/* In-Form Alert Box */
.ch-form-alert {
    position: relative !important;
    padding: 14px 18px !important;
    margin-bottom: 20px !important;
    border: 1px solid transparent !important;
    border-radius: 8px !important;
    font-size: 14px !important;
    line-height: 1.5 !important;
    animation: chFadeIn 0.3s ease-in-out !important;
    display: flex !important;
    align-items: flex-start !important;
    gap: 12px !important;
    text-align: left !important;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08) !important;
    z-index: 10 !important;
}

.ch-form-alert .ch-alert-icon {
    font-size: 20px !important;
    flex-shrink: 0 !important;
    line-height: 1 !important;
    margin-top: 1px !important;
}

.ch-form-alert .ch-alert-text {
    flex-grow: 1 !important;
    color: inherit !important;
}

.ch-form-alert.ch-alert-danger {
    color: #721c24 !important;
    background-color: #f8d7da !important;
    border-color: #f5c6cb !important;
}

.ch-form-alert.ch-alert-success {
    color: #155724 !important;
    background-color: #d4edda !important;
    border-color: #c3e6cb !important;
}

.ch-form-alert.ch-alert-warning {
    color: #856404 !important;
    background-color: #fff3cd !important;
    border-color: #ffeeba !important;
}

.ch-btn-submitting {
    pointer-events: none !important;
    opacity: 0.8 !important;
    cursor: not-allowed !important;
    position: relative !important;
}

.ch-spinner {
    display: inline-block !important;
    width: 14px !important;
    height: 14px !important;
    margin-right: 6px !important;
    vertical-align: -2px !important;
    border: 2px solid currentColor !important;
    border-right-color: transparent !important;
    border-radius: 50% !important;
    animation: chSpin 0.75s linear infinite !important;
}

@keyframes chSpin {
    to {
        transform: rotate(360deg);
    }
}

.ch-fade-out {
    opacity: 0 !important;
    transform: translateY(-6px) !important;
    transition: opacity 0.4s ease-out, transform 0.4s ease-out !important;
}

@keyframes chFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}