/* 移动端侧边栏样式 */

/* 移动端切换按钮 - 默认隐藏 */
.sidebar-toggle {
    display: none;
    position: fixed;
    left: 1rem;
    bottom: 1.5rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.4);
    cursor: pointer;
    z-index: 1001;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.5);
}

.sidebar-toggle:active {
    transform: scale(0.95);
}

/* 遮罩层 */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* 侧边栏头部 */
.sidebar-header {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 1rem;
}

.sidebar-header h3 {
    color: var(--text-light);
    font-size: 1.2rem;
    font-weight: 600;
}

.sidebar-close {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.sidebar-close:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* 移动端适配 */
@media (max-width: 768px) {
    /* 显示切换按钮 */
    .sidebar-toggle {
        display: flex;
    }

    /* 侧边栏改为悬浮抽屉样式 */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 280px !important;
        min-width: 280px !important;
        max-width: 280px !important;
        height: 100vh !important;
        max-height: 100vh !important;
        min-height: 100vh !important;
        z-index: 999;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
        padding-top: 0;
        margin: 0;
        display: flex;
        flex-direction: column;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    /* 显示侧边栏头部 */
    .sidebar-header {
        display: flex;
        flex-shrink: 0;
    }

    /* 分类树容器 */
    .category-tree {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden;
        height: calc(100vh - 70px);
        margin-bottom: 0;
        padding-bottom: 1rem;
    }

    /* 主内容区域占满全宽 */
    .examples-container {
        padding: 1rem;
    }

    /* 网格布局改为单列 */
    .examples-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* 头部适配 */
    header {
        flex-direction: column;
        padding: 0.75rem 1rem;
        height: auto;
        min-height: var(--header-height);
    }

    .logo {
        margin-bottom: 0.75rem;
    }

    .logo h1 {
        font-size: 1.4rem;
    }

    .search-bar {
        width: 100%;
        max-width: 100%;
    }

    /* 调整主内容区域 */
    .main-content {
        margin-top: calc(var(--header-height) + 60px);
    }

    /* 分类标题调整 */
    .category-title h2 {
        font-size: 1.5rem;
    }

    /* 卡片样式调整 */
    .example-card .thumbnail {
        height: 180px;
    }

    /* 页脚调整 */
    footer {
        padding: 1rem;
        font-size: 0.85rem;
    }
}

/* 平板适配 (769px - 992px) */
@media (max-width: 992px) and (min-width: 769px) {
    .sidebar {
        width: 260px;
        min-width: 260px;
        max-width: 260px;
        height: 100%;
        overflow-y: auto;
    }

    .category-tree {
        margin-bottom: 0;
        padding-bottom: 1rem;
    }

    .examples-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .main-content {
        height: calc(100vh - var(--header-height));
    }
}

/* 小屏手机适配 */
@media (max-width: 480px) {
    .sidebar {
        width: 260px !important;
        min-width: 260px !important;
        max-width: 260px !important;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .category-title h2 {
        font-size: 1.3rem;
    }

    .example-card .thumbnail {
        height: 160px;
    }

    .example-card .title {
        font-size: 1.1rem;
    }

    .example-card .description {
        font-size: 0.85rem;
    }
}

/* 防止 body 滚动当侧边栏打开时 */
body.sidebar-open {
    overflow: hidden;
}

/* 侧边栏滚动条样式 */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}