/* 书籍/大纲选择列表样式 */
.selection-list {
    max-height: 500px;
    overflow-y: auto;
}

.selection-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 0.75rem;
}

.selection-item:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateX(4px);
}

.selection-item.selected {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.5);
}

.selection-item-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    font-size: 1.2rem;
    color: white;
    flex-shrink: 0;
}

.selection-item-content {
    flex: 1;
    min-width: 0;
}

.selection-item-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.selection-item-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

.selection-item-info {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.selection-item-info-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.85;
}

.selection-item-info-item i {
    font-size: 0.75rem;
    color: var(--primary-color);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: rgba(255, 255, 255, 0.5);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.empty-state p {
    font-size: 1rem;
    margin: 0;
}

.empty-state small {
    font-size: 0.875rem;
    opacity: 0.7;
    display: block;
    margin-top: 0.5rem;
}