/* ===== 全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Node.js 风格配色 - 低饱和度 */
    --color-primary: #43853d;
    --color-primary-light: #68a063;
    --color-primary-dark: #2f5d2a;
    --color-bg: #ffffff;
    --color-bg-secondary: #f9f9f9;
    --color-text: #333333;
    --color-text-secondary: #666666;
    --color-border: #e0e0e0;
    --color-shadow: rgba(0, 0, 0, 0.08);
    --color-success: #43853d;
    --color-error: #d32f2f;
    --color-warning: #f57c00;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--color-primary-dark);
}

/* ===== 容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* ===== 头部 ===== */
.header {
    text-align: center;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-md);
}

.header-title-group {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.site-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-text);
}

.site-subtitle {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin: 0;
}

.site-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

/* ===== 搜索框 ===== */
.search-box {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color 0.2s;
}

.search-box input:focus {
    border-color: var(--color-primary);
}

/* ===== 分类筛选 ===== */
.category-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.category-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.95rem;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.category-btn:hover {
    background-color: var(--color-primary-light);
    color: white;
    border-color: var(--color-primary-light);
}

.category-btn.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ===== 分类区块 ===== */
.category-section {
    margin-bottom: var(--spacing-xl);
}

.category-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

/* ===== 网站卡片网格 ===== */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.site-card {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 16px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    box-shadow: 0 1px 3px var(--color-shadow);
    gap: 16px;
    min-height: 100px;
}

.site-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--color-shadow);
    border-color: var(--color-primary);
}

.site-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.site-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.site-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.site-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 4px;
}

.site-description {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    height: 16px;
}

/* 网站访问链接 */
.site-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
    align-items: center;
}

.site-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s;
    border: 1px solid var(--color-border);
    white-space: nowrap;
    font-weight: 400;
    background-color: #f5f5f5;
    color: var(--color-text);
}

.site-link:hover {
    background-color: #e8e8e8;
    color: var(--color-text);
}

.site-link-public .link-icon {
    color: #2196F3;
    font-size: 14px;
}

.site-link-intranet .link-icon {
    color: #FF9800;
    font-size: 14px;
}

.link-text {
    font-weight: 400;
}

.site-category-tag {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-sm);
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
}

/* ===== 底部 ===== */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* ===== 登录页面 ===== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.login-container {
    width: 100%;
    max-width: 480px;
    padding: var(--spacing-md);
}

.login-box {
    background-color: var(--color-bg);
    padding: var(--spacing-xl) 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.login-box h1 {
    text-align: center;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
    font-size: 1.8rem;
}

.login-box p {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 0.95rem;
}

.login-form {
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-primary);
}

.login-footer {
    text-align: center;
    margin-top: var(--spacing-md);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: white;
}

.btn-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-border);
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

.btn-edit {
    background-color: var(--color-primary);
    color: white;
}

.btn-delete {
    background-color: var(--color-error);
    color: white;
}

/* ===== 提示框 ===== */
.alert {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
}

.alert-error {
    background-color: #ffebee;
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

.alert-success {
    background-color: #e8f5e9;
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

/* ===== 响应式 ===== */

/* 平板 768px */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .site-title {
        font-size: 1.8rem;
    }

    .header {
        padding: var(--spacing-sm) 0;
        margin-bottom: var(--spacing-sm);
    }

    /* 分类筛选：横向滚动，不折行 */
    .category-filter {
        flex-wrap: nowrap;
        overflow-x: auto;
        justify-content: flex-start;
        padding-bottom: 6px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        /* Firefox 隐藏滚动条 */
        margin-top: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .category-filter::-webkit-scrollbar {
        display: none;
        /* Chrome/Safari 隐藏滚动条 */
    }

    .category-btn {
        padding: 0.4rem 0.9rem;
        font-size: 0.875rem;
        white-space: nowrap;
        flex-shrink: 0;
    }

    /* 网格：两列 */
    .sites-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    /* 卡片：更紧凑，按钮缩小 */
    .site-card {
        padding: 12px;
        gap: 10px;
        min-height: 80px;
    }

    .site-icon {
        width: 44px;
        height: 44px;
    }

    .site-name {
        font-size: 14px;
    }

    .site-description {
        font-size: 11px;
    }

    .site-link {
        padding: 5px 8px;
        font-size: 12px;
        gap: 4px;
    }

    .category-title {
        font-size: 1.25rem;
    }
}

/* 手机 480px */
@media (max-width: 480px) {
    .site-title {
        font-size: 1.5rem;
    }

    /* 两列卡片：每张卡片改为纵向（图标+名字+描述+按钮上下排） */
    .sites-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .site-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 10px;
        gap: 8px;
        min-height: unset;
    }

    .site-icon {
        width: 40px;
        height: 40px;
    }

    .site-info {
        width: 100%;
    }

    .site-name {
        font-size: 13px;
        white-space: normal;
        /* 允许换行，避免截断 */
        word-break: break-word;
    }

    .site-description {
        white-space: normal;
        height: auto;
        font-size: 11px;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .site-links {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
        width: 100%;
    }

    .site-link {
        padding: 4px 8px;
        font-size: 12px;
    }
}

/* 超窄屏 360px：单列 */
@media (max-width: 360px) {
    .sites-grid {
        grid-template-columns: 1fr;
    }

    .site-card {
        flex-direction: row;
        align-items: center;
        min-height: 72px;
    }

    .site-name {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .site-description {
        display: none;
        /* 超窄屏隐藏描述，保持简洁 */
    }
}