/*
 * 现代文件管理器样式
 * 具有毛玻璃拟态效果和响应式设计
 * 
 * @author Your Name
 * @version 2.0
 * @since 2023-XX-XX
 */

:root {
    --primary-color: #6366f1; /* 主色调 - 靛蓝色 */
    --primary-light: #818cf8; /* 主色调浅色 */
    --primary-dark: #4f46e5; /* 主色调深色 */
    --text-color: #334155; /* 文本颜色 */
    --text-light: #64748b; /* 次要文本颜色 */
    --bg-color: #f1f5f9; /* 背景颜色 */
    --card-bg: rgba(255, 255, 255, 0.7); /* 卡片背景色 */
    --border-color: #e2e8f0; /* 边框颜色 */
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); /* 阴影 */
    --border-radius: 12px; /* 圆角半径 */
    --transition: all 0.3s ease; /* 过渡效果 */
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    background-image: radial-gradient(var(--primary-light) 0.5px, transparent 0.5px),
                      radial-gradient(var(--primary-light) 0.5px, var(--bg-color) 0.5px);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
}

/* 容器 */
.container {
    width: 90%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 毛玻璃效果类 */
.glass-effect {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* 导航栏 */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 15px 0;
    margin-bottom: 30px;
}

.navbar .container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

/* 搜索框 */
.search-box {
    flex: 1;
    max-width: 500px;
    margin: 0 30px;
}

.search-box form {
    display: flex;
    width: 100%;
}

.search-box input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

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

.search-box button {
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.search-box button:hover {
    background-color: var(--primary-dark);
}

/* 用户操作 */
.user-actions {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 10px 15px;
}

.breadcrumb-item {
    color: var(--text-light);
    text-decoration: none;
    margin-right: 10px;
    position: relative;
    transition: var(--transition);
}

.breadcrumb-item:after {
    content: '/';
    margin-left: 10px;
    color: var(--text-light);
}

.breadcrumb-item:hover {
    color: var(--primary-color);
}

.breadcrumb-item.active {
    color: var(--text-color);
    font-weight: 500;
}

.breadcrumb-item.active:after {
    display: none;
}

/* 搜索结果信息 */
.search-result-info {
    padding: 15px;
    margin-bottom: 20px;
}

/* 操作栏 */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    margin-bottom: 20px;
}

.view-toggle {
    display: flex;
    gap: 10px;
}

.view-btn {
    padding: 8px 12px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

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

.sort-options {
    display: flex;
    gap: 10px;
}

.sort-options select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: white;
    cursor: pointer;
}

/* 文件网格 */
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

/* 列表视图 */
.file-grid.list-view {
    grid-template-columns: 1fr;
}

.file-grid.list-view .file-card {
    display: flex;
    align-items: center;
    padding: 15px;
}

.file-grid.list-view .file-header {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-grid.list-view .file-description {
    display: none;
}

.file-grid.list-view .file-meta {
    margin-left: 20px;
    white-space: nowrap;
}

/* 文件卡片 */
.file-card {
    padding: 20px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.file-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.file-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.file-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

.file-name a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.file-name a:hover {
    color: var(--primary-color);
}

.file-actions {
    display: flex;
    gap: 5px;
}

.action-btn {
    background-color: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: var(--transition);
}

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

.file-description {
    color: var(--text-light);
    margin-bottom: 15px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 8em;
}

.file-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    padding-top: 10px;
    margin-top: 10px;
}

/* 空状态 */
.empty-state {
    padding: 40px 20px;
    text-align: center;
    grid-column: 1 / -1;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-light);
}

/* 右键菜单 */
.context-menu {
    position: fixed;
    z-index: 1000;
    display: none;
    min-width: 180px;
    padding: 10px 0;
}

.context-menu ul {
    list-style: none;
}

.context-menu li a {
    display: block;
    padding: 8px 15px;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.context-menu li a:hover {
    background-color: var(--primary-light);
    color: white;
}

.context-menu li.separator {
    border-top: 1px solid var(--border-color);
    margin: 5px 0;
}

/* 页脚 */
.footer {
    padding: 30px 0;
    margin-top: 50px;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none !important;
    transition: var(--transition);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 500;
}

.footer a:hover {
    color: var(--primary-dark);
    background-color: rgba(99, 102, 241, 0.1);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    text-decoration: none !important;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--text-light);
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }

    .search-box {
        margin: 0;
        width: 100%;
        max-width: none;
    }

    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .action-bar {
        flex-direction: column;
        gap: 15px;
    }

    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .footer .container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .file-grid {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* 骨架屏 */
.skeleton {
    border-radius: var(--border-radius);
}

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
    border-radius: 4px;
}

.skeleton-text:last-child {
    width: 60%;
}