.activity-title-editor {
    cursor: pointer;
    position: relative;
    transition: background-color 0.2s, box-shadow 0.2s;
    border-radius: var(--half-radius);
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border: 1px solid transparent;
}

.activity-title-editor:hover {
    border-color: var(--black);
    box-shadow: 0 0 0 0.2rem var(--black-rgba-30);
    background-color: var(--md-gray-100);
}

.edit-icon-container {
    width: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width 0.3s ease;
    margin-right: 0;
}

.activity-title-editor:hover .edit-icon-container {
    width: 1.5rem;
    margin-right: 0.25rem;
}

.edit-icon {
    opacity: 0;
    transition: opacity 0.2s ease;
    flex-shrink: 0;
}

.activity-title-editor:hover .edit-icon {
    opacity: 1;
}

.subject-bar {
    width: 0.5rem;
    min-height: 24px;
    flex-shrink: 0;
    margin-right: 0.75rem;
}

.activity-text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1;
    min-width: 0; /* This is crucial for text ellipsis to work correctly in flex */
}

.editor-container {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0.5rem;
    border-radius: 0.25rem;
}

.editor-container > * {
    margin-right: 8px;
}

.editor-container > *:last-child {
    margin-right: 0;
}

.subject-select {
    flex: 0 0 150px;
}

.text-input {
    flex-grow: 1;
    min-width: 100px;
}

.btn-icon {
    padding: 0.25rem 0.5rem;
}

@media (max-width: 576px) {
    .subject-select {
        flex-basis: 120px;
    }
}