body {
    background-color: #f8f9fa;
}

.announcement-card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.announcement-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.acknowledged-badge {
    font-size: 0.9rem;
    color: #198754;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.acknowledge-form button {
    min-width: 150px;
}

.announcement-card-link {
    cursor: pointer;
}

.announcement-card-link:focus-visible {
    outline: 2px solid rgba(13, 110, 253, 0.75);
    outline-offset: 2px;
}

.announcement-card-link:hover {
    background-color: rgba(13, 110, 253, 0.08);
}

.comment-list li {
    border-left: 4px solid rgba(13, 110, 253, 0.2);
}