/* Form validation styles */
.form-group.error input {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
}

.error-message {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 5px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

/* Loading indicator */
.loading-spinner {
    display: none;
    width: 25px;
    height: 25px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
    margin-left: 10px;
}

body.rtl .loading-spinner {
    margin-left: 10px;
    margin-right: 0;
}

body.ltr .loading-spinner {
    margin-right: 10px;
    margin-left: 0;
}

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

.form-submit button.loading .loading-spinner {
    display: inline-block;
}

/* Mobile responsive error messages */
@media (max-width: 576px) {
    .error-message {
        font-size: 0.8rem;
    }
    
    .form-group.error input {
        margin-bottom: 5px;
    }
}