.tooltip {
    transition: opacity 0.15s;
}

.copy-btn {
    transition: all 0.2s;
}

.search-container {
    margin: 20px auto;
    max-width: 600px;
}

.hidden-teacher {
    display: none !important;
}

.no-results {
    text-align: center;
    padding: 40px;
    color: #6c757d;
}