.email-feedback {
    margin-top: 0.25rem;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: block;
    transition: all 0.3s ease;
}

.email-feedback.valid {
    color: #198754;
}

.email-feedback.invalid {
    color: #dc3545;
}

input[type="email"].is-valid {
    border-color: #198754;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

input[type="email"].is-invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

/* Animation für Feedback */
.email-feedback {
    opacity: 0;
    transform: translateY(-10px);
}

.email-feedback.valid,
.email-feedback.invalid {
    opacity: 1;
    transform: translateY(0);
}