/* 返回顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background-color: #ffffff;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: scale(1.1);
}

.back-to-top .icon {
    width: 24px;
    height: 24px;
    transition: all 0.3s ease;
    stroke: #159957;
}

/* 搜索按钮和面板样式 */
.search-button {
    position: fixed;
    bottom: 140px;
    right: 20px;
    background-color: #ffffff;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.search-button:hover {
    transform: scale(1.1);
}

.search-button .icon {
    width: 24px;
    height: 24px;
    transition: all 0.3s ease;
    stroke: #159957;
}

.search-panel {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100%;
    background-color: #ffffff;
    box-shadow: -2px 0 10px rgba(0,0,0,0.1);
    z-index: 1001;
    transition: right 0.3s ease;
    padding: 20px;
}

.search-panel.active {
    right: 0;
}

.search-panel input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 10px;
}

.search-results {
    max-height: calc(100% - 100px);
    overflow-y: auto;
}

.search-result-item {
    padding: 10px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
}

.search-result-item:hover {
    background-color: #f5f5f5;
}

.close-search {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

@media screen and (max-width: 42em) {
    .back-to-top,
    .search-button {
        width: 40px;
        height: 40px;
    }
    
    .back-to-top .icon,
    .search-button .icon {
        width: 20px;
        height: 20px;
    }
    
    .search-panel {
        width: 100%;
    }
}