/* Form validation error styles */
.field-error {
    color: #dc3545;
    font-size: 0.85rem;
    margin-top: 4px;
    display: block;
    font-weight: 500;
}

.form-group input.error {
    border-color: #dc3545;
    background: #fff5f5;
}

.form-group input.error:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.12);
}

/* Submit button loading state */
.pledge-btn.loading {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

/* Spinner animation */
.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%
;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

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