/**
 * Apple Style Theme - 主题样式
 * Navigation v2.2.0
 */

/* 基础样式 */
:root {
    --primary-color: #667eea;
    --primary-dark: #764ba2;
    --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --card-bg: rgba(255, 255, 255, 0.8);
    --text-primary: #1a1a2e;
    --text-secondary: #666;
    --text-muted: #888;
    --border-radius: 16px;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 50px rgba(0, 0, 0, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    color: var(--text-primary);
}

/* 头部 */
.header {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 2rem;
}

/* 搜索框 */
.search-box {
    flex: 1;
    max-width: 500px;
    margin: 0 40px;
}

.search-input {
    width: 100%;
    padding: 12px 20px;
    border: none;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    outline: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.search-input:focus {
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.search-input::placeholder {
    color: var(--text-muted);
}

/* 主容器 */
.container {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 30px;
}

/* 侧边栏 */
.sidebar {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.01em;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.category-list {
    list-style: none;
}

.category-item {
    margin-bottom: 5px;
}

.category-link {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.2s;
}

.category-link:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
}

.category-link.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.category-icon {
    font-size: 1.3rem;
    margin-right: 12px;
}

.category-name {
    flex: 1;
}

.category-count {
    background: rgba(0, 0, 0, 0.1);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
}

.category-link.active .category-count {
    background: rgba(255, 255, 255, 0.2);
}

/* 内容区 */
.main-content {
    display: grid;
    gap: 30px;
}

.category-section {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.section-icon {
    font-size: 1.5rem;
    margin-right: 12px;
}

.section-title {
    font-size: 1.2rem;
    color: var(--text-primary);
}

/* 网站卡片网格 */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

/* 网站卡片 */
.site-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: 15px;
}

.site-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.site-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    object-fit: cover;
    flex-shrink: 0;
}

.site-info {
    flex: 1;
    min-width: 0;
}

.site-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.site-clicks {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 5px;
    opacity: 0.7;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

/* 底部 */
.footer {
    text-align: center;
    padding: 30px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
    
    .category-list {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .category-item {
        margin: 0;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .search-box {
        margin: 0;
        max-width: 100%;
        order: -1;
    }
    
    .sites-grid {
        grid-template-columns: 1fr;
    }
    
    .site-card {
        flex-direction: column;
        text-align: center;
        padding: 25px 20px;
    }
    
    .site-icon {
        width: 64px;
        height: 64px;
    }
    
    .site-title {
        white-space: normal;
    }
}

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.category-section {
    animation: fadeIn 0.3s ease;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(102, 126, 234, 0.5);
}