:root {
    --primary: #50fa7b;
    --primary-dark: #38b04a;
    --primary-light: #7afa98;
    --bg-light: #ffffff;
    --bg-dark: #121212;
    --text-light: #222222;
    --text-dark: #f8f8f2;
    --card-light: #f8f8f8;
    --card-dark: #1e1e1e;
    --border-light: #e0e0e0;
    --border-dark: #333333;
    --hover-light: #f0f0f0;
    --hover-dark: #2d2d2d;
    --suggest-hover-light: #e6f7ff;
    --suggest-hover-dark: #2d3748;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s ease;
    --icon-margin: 8px; /* 图标和文字间距 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-light);
    min-height: 100vh;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
}

body.dark-mode {
    background-color: var(--bg-dark);
    color: var(--text-dark);
}

a {
    color: #0066cc;
    text-decoration: none;
    transition: var(--transition);
}

body.dark-mode a {
    color: #8be9fd;
}

a:hover {
    text-decoration: underline;
}

button {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}

/* 导航栏样式 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

body.dark-mode .navbar {
    background-color: rgba(18, 18, 18, 0.8);
    border-bottom: 1px solid var(--border-dark);
}

.nav-container {
    display: flex;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
}

.logo {
    height: 36px;
    width: auto;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

/* 导航栏中的搜索框 - 大屏幕显示 */
.navbar-search-container {
    display: flex;
    align-items: center;
    flex: 1;
    max-width: 600px;
    margin: 0 16px;
}

.nav-links {
    display: flex;
    gap: 20px;
    margin-right: 20px;
}

.nav-link {
    color: var(--text-light);
    font-size: 14px;
    padding: 6px 0;
    position: relative;
    transition: var(--transition);
}

body.dark-mode .nav-link {
    color: var(--text-dark);
}

.nav-link.active {
    color: var(--primary-dark);
    font-weight: 500;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-dark);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: var(--transition);
}

body.dark-mode .theme-toggle {
    color: var(--text-dark);
}

.theme-toggle:hover {
    background-color: var(--hover-light);
    transform: rotate(90deg);
}

body.dark-mode .theme-toggle:hover {
    background-color: var(--hover-dark);
}

.user-menu {
    position: relative;
}

.user-button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary);
    color: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    transition: var(--transition);
}

.user-button:hover {
    transform: scale(1.05);
}

.user-dropdown {
    position: absolute;
    top: 44px;
    right: 0;
    width: 240px;
    background-color: var(--card-light);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

body.dark-mode .user-dropdown {
    background-color: var(--card-dark);
}

.user-menu:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    width: 100%;
    text-align: left;
    padding: 10px 16px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

body.dark-mode .dropdown-item {
    color: var(--text-dark);
}

.dropdown-item i {
    margin-right: var(--icon-margin);
    width: 16px;
    text-align: center;
}

.dropdown-item:hover {
    background-color: var(--hover-light);
    text-decoration: none;
    transform: translateX(4px);
}

body.dark-mode .dropdown-item:hover {
    background-color: var(--hover-dark);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-light);
    margin: 8px 0;
}

body.dark-mode .dropdown-divider {
    background-color: var(--border-dark);
    background-color: var(--border-dark);
}

/* 汉堡菜单 */
.hamburger-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

body.dark-mode .hamburger-menu {
    color: var(--text-dark);
}

.hamburger-menu:hover {
    transform: scale(1.1);
}

/* 主内容区 */
.main-content {
    flex: 1;
    padding: 20px 24px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* 品牌标题样式 - 小屏幕显示，大屏幕隐藏 */
.brand {
    margin-bottom: 20px;
    text-align: center;
    display: none; /* 默认隐藏 */
}

.brand-name {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, #bd93f9, #50fa7b, #8be9fd);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    transition: var(--transition);
}

.brand-name:hover {
    transform: scale(1.02);
}

/* 主内容区的搜索框 - 小屏幕显示，大屏幕隐藏 */
.content-search-container {
    display: none;
    width: 100%;
    max-width: 800px;
    margin: 0 auto 30px;
}

.search-box-container {
    position: relative;
    width: 100%;
}

.search-box {
    display: flex;
    align-items: center;
    width: 100%;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 12px 16px;
    background-color: var(--card-light);
    transition: var(--transition);
}

body.dark-mode .search-box {
    border-color: var(--border-dark);
    background-color: var(--card-dark);
}

.search-box:focus-within {
    box-shadow: var(--shadow);
    border-color: transparent;
    transform: translateY(-2px);
}

.search-icon {
    color: #666;
    margin-right: calc(var(--icon-margin) + 4px);
    font-size: 18px;
    width: 20px;
}

body.dark-mode .search-icon {
    color: #aaa;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 16px;
    background: transparent;
    color: inherit;
    min-height: 24px;
}

.search-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.clear-btn {
    color: #666;
    font-size: 18px;
    display: none;
    padding: 4px;
    transition: var(--transition);
}

body.dark-mode .clear-btn {
    color: #aaa;
}

.clear-btn.visible {
    display: block;
}

.clear-btn:hover {
    color: var(--text-light);
    background-color: var(--hover-light);
    border-radius: 50%;
    transform: rotate(90deg);
}

body.dark-mode .clear-btn:hover {
    color: var(--text-dark);
    background-color: var(--hover-dark);
}

.search-btn {
    background-color: var(--primary);
    color: var(--bg-dark);
    border: none;
    border-radius: 4px;
    padding: 8px 16px;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.search-btn i {
    margin-right: var(--icon-margin);
}

.search-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 搜索建议下拉框 */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--card-light);
    border: 1px solid var(--border-light);
    border-top: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
    z-index: 90;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-suggestions.active {
    max-height: 350px;
}

body.dark-mode .search-suggestions {
    background-color: var(--card-dark);
    border-color: var(--border-dark);
}

.suggestion-header {
    padding: 10px 16px;
    font-size: 13px;
    color: #888;
    border-bottom: 1px solid var(--border-light);
}

body.dark-mode .suggestion-header {
    color: #666;
    border-bottom-color: var(--border-dark);
}

.suggestion-list {
    max-height: 300px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) transparent;
}

.suggestion-list::-webkit-scrollbar {
    width: 6px;
}

.suggestion-list::-webkit-scrollbar-track {
    background: transparent;
}

.suggestion-list::-webkit-scrollbar-thumb {
    background-color: var(--primary);
    border-radius: 3px;
}

.suggestion-item {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 15px;
    position: relative;
}

.suggestion-item:hover, .suggestion-item.active {
    background-color: var(--suggest-hover-light);
}

body.dark-mode .suggestion-item:hover, 
body.dark-mode .suggestion-item.active {
    background-color: var(--suggest-hover-dark);
}

.suggestion-item i {
    margin-right: var(--icon-margin);
    color: #666;
    width: 18px;
    text-align: center;
}

.suggestion-item .suggestion-type {
    margin-left: auto;
    font-size: 12px;
    color: #888;
    background-color: rgba(0,0,0,0.05);
    padding: 2px 6px;
    border-radius: 4px;
}

body.dark-mode .suggestion-item .suggestion-type {
    color: #aaa;
    background-color: rgba(255,255,255,0.05);
}

body.dark-mode .suggestion-item i {
    color: #aaa;
}

.suggestion-divider {
    height: 1px;
    background-color: var(--border-light);
    margin: 0 16px;
}

body.dark-mode .suggestion-divider {
    background-color: var(--border-dark);
}

/* 搜索标签 */
.search-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    margin: 16px 0;
    padding-left: 4px;
}

body.dark-mode .search-tabs {
    border-bottom-color: var(--border-dark);
}

.search-tab {
    padding: 8px 16px;
    font-size: 14px;
    position: relative;
    color: var(--text-light);
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: var(--transition);
}

body.dark-mode .search-tab {
    color: var(--text-dark);
}

.search-tab i {
    margin-right: var(--icon-margin);
}

.search-tab.active {
    color: var(--primary-dark);
    font-weight: 500;
}

.search-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-dark);
}

.search-tab:hover:not(.active) {
    background-color: var(--hover-light);
    transform: translateY(-2px);
}

body.dark-mode .search-tab:hover:not(.active) {
    background-color: var(--hover-dark);
}

/* 搜索结果统计 */
.search-stats {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
    padding-left: 4px;
}

body.dark-mode .search-stats {
    color: #aaa;
}

/* 搜索结果区域 */
.search-results-container {
    width: 100%;
}

.search-results {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.result-item {
    background-color: var(--card-light);
    border-radius: 8px;
    padding: 16px;
    transition: var(--transition);
}

body.dark-mode .result-item {
    background-color: var(--card-dark);
}

.result-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px) scale(1.005);
}

.result-header {
    display: flex;
    margin-bottom: 8px;
}

.result-favicon {
    width: 24px;  /* 增大网站头像尺寸 */
    height: 24px; /* 增大网站头像尺寸 */
    margin-right: 10px; /* 调整间距 */
    border-radius: 4px;
    object-fit: contain;
    margin-top: 1px;
    flex-shrink: 0;
}

.result-domain-info {
    flex: 1;
}

.result-domain-name {
    font-size: 14px;
    color: #666;
    margin-bottom: 2px;
}

body.dark-mode .result-domain-name {
    color: #aaa;
}

.result-domain-hierarchy {
    font-size: 12px;
    color: #888;
}

body.dark-mode .result-domain-hierarchy {
    color: #666;
}

.result-title {
    font-size: 18px;
    margin-bottom: 8px;
    transition: var(--transition);
}

.result-title a {
    color: #1a0dab;
    text-decoration: none;
}

body.dark-mode .result-title a {
    color: #8ab4f8;
}

.result-title a:hover {
    text-decoration: underline;
    color: #0d47a1;
}

body.dark-mode .result-title a:hover {
    color: #bbdefb;
}

.result-description {
    font-size: 14px;
    line-height: 1.5;
    color: #545454;
}

body.dark-mode .result-description {
    color: #dcdcdc;
}

/* 无结果提示 */
.no-results {
    text-align: center;
    padding: 40px 20px;
    transition: var(--transition);
}

.no-results i {
    font-size: 48px;
    color: #ccc;
    margin-bottom: 16px;
    transition: var(--transition);
}

body.dark-mode .no-results i {
    color: #555;
}

.no-results:hover i {
    transform: scale(1.1) rotate(10deg);
}

.no-results h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.no-results p {
    color: #666;
    max-width: 600px;
    margin: 0 auto 20px;
}

body.dark-mode .no-results p {
    color: #aaa;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 40px 0;
    gap: 8px;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 4px;
    border: 1px solid var(--border-light);
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

body.dark-mode .page-link {
    border-color: var(--border-dark);
    color: var(--text-dark);
}

.page-link:hover {
    background-color: var(--hover-light);
    border-color: var(--primary);
    transform: translateY(-2px);
}

body.dark-mode .page-link:hover {
    background-color: var(--hover-dark);
}

.page-link.active {
    background-color: var(--primary);
    color: var(--bg-dark);
    border-color: var(--primary);
    font-weight: bold;
}

.page-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination-ellipsis {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--text-light);
}

body.dark-mode .pagination-ellipsis {
    color: var(--text-dark);
}

/* 页脚 */
footer {
    padding: 24px;
    border-top: 1px solid var(--border-light);
    margin-top: auto;
    transition: var(--transition);
}

body.dark-mode footer {
    border-top-color: var(--border-dark);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
}

.footer-link {
    color: #666;
    font-size: 14px;
    transition: var(--transition);
}

body.dark-mode .footer-link {
    color: #aaa;
}

.footer-link:hover {
    color: var(--text-light);
    transform: translateY(-2px);
}

body.dark-mode .footer-link:hover {
    color: var(--text-dark);
}

.copyright {
    color: #666;
    font-size: 14px;
}

body.dark-mode .copyright {
    color: #aaa;
}

/* 响应式核心逻辑 */
/* 大屏幕 (≥ 1024px) - 搜索框在导航栏，隐藏品牌标识 */
@media (min-width: 1024px) {
    .navbar-search-container {
        display: flex; /* 显示导航栏中的搜索框 */
    }
    .brand {
        display: none; /* 隐藏品牌标识 */
    }
    .content-search-container {
        display: none; /* 隐藏内容区的搜索框 */
    }
}

/* 中等屏幕 (768px - 1023px) - 屏幕不足，搜索框在品牌标识下方 */
@media (max-width: 1023px) and (min-width: 768px) {
    .navbar-search-container {
        display: none; /* 隐藏导航栏中的搜索框 */
    }
    .brand {
        display: block; /* 显示品牌标识 */
    }
    .content-search-container {
        display: block; /* 显示内容区的搜索框 */
    }
}

/* 小屏幕 (≤ 767px) - 屏幕不足，搜索框在品牌标识下方 */
@media (max-width: 767px) {
    .navbar-search-container {
        display: none; /* 隐藏导航栏中的搜索框 */
    }
    .brand {
        display: block; /* 显示品牌标识 */
    }
    .content-search-container {
        display: block; /* 显示内容区的搜索框 */
    }
    
    /* 导航栏调整为垂直布局 */
    .navbar {
        padding: 12px 16px;
        flex-direction: column;
        gap: 16px;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 16px;
    }
    
    .nav-left {
        flex-direction: column;
        gap: 16px;
        width: 100%;
    }
    
    .logo {
        order: 1;
    }
    
    .nav-links {
        display: none;
    }
    
    .hamburger-menu {
        display: block;
        position: absolute;
        top: 16px;
        right: 16px;
    }
    
    /* 调整品牌标题大小 */
    .brand-name {
        font-size: 28px;
    }
    
    /* 搜索区域居中 */
    .search-section {
        margin: 0 auto 30px;
        max-width: 90%;
        text-align: center;
    }
    
    /* 搜索结果适配小屏幕 */
    .result-item {
        padding: 12px;
    }
    
    .result-title {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    /* 进一步优化超小屏幕 */
    .brand {
        margin-bottom: 15px;
    }
    
    .brand-name {
        font-size: 24px;
    }
    
    .search-box {
        padding: 10px 12px;
    }
    
    .search-btn span {
        display: none;
    }
    
    .search-btn i {
        margin-right: 0;
    }
    
    .footer-links {
        gap: 12px 16px;
    }
    
    .page-link {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
}

/* 应用菜单样式 */
.apps-menu {
    position: relative;
}

.apps-button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
}

body.dark-mode .apps-button {
    color: var(--text-dark);
}

.apps-button:hover {
    background-color: var(--hover-light);
}

body.dark-mode .apps-button:hover {
    background-color: var(--hover-dark);
}

.apps-dropdown {
    position: absolute;
    top: 44px;
    right: 0;
    background-color: var(--card-light);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
    width: 320px;
    max-height: 400px;
    overflow-y: auto;
}

body.dark-mode .apps-dropdown {
    background-color: var(--card-dark);
}

.apps-menu:hover .apps-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.app-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 12px 8px;
    border-radius: 8px;
    transition: var(--transition);
    color: var(--text-light);
}

body.dark-mode .app-item {
    color: var(--text-dark);
}

.app-item:hover {
    background-color: var(--hover-light);
    text-decoration: none;
    transform: translateY(-2px);
}

body.dark-mode .app-item:hover {
    background-color: var(--hover-dark);
}

.app-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    background-color: var(--bg-light);
    overflow: hidden;
}

body.dark-mode .app-icon {
    background-color: var(--bg-dark);
}

.app-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.add-icon {
    background-color: var(--primary);
    color: var(--bg-dark);
}

.app-name {
    font-size: 12px;
    word-break: break-word;
    max-width: 80px;
}

/* 响应式调整 */
@media (max-width: 480px) {
    .apps-dropdown {
        width: 280px;
    }
    
    .apps-grid {
        gap: 12px;
    }
    
    .app-icon {
        width: 40px;
        height: 40px;
    }
}

/* AI搜索结果样式 */
.ai-result {
    border-left: 4px solid var(--primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 24px;
}

.ai-result:hover {
    transform: translateY(-3px) scale(1.005);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.ai-answer-container {
    position: relative;
}

.ai-answer-visible {
    margin-bottom: 12px;
    line-height: 1.6;
}

.ai-answer-hidden {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.8s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.6s ease;
    line-height: 1.6;
}

.ai-answer-hidden.expanded {
    max-height: 2000px;
    opacity: 1;
    margin-top: 12px;
}

.show-more-btn {
    color: var(--primary-dark);
    background-color: transparent;
    border: 1px solid var(--primary);
    border-radius: 4px;
    padding: 6px 12px;
    margin-top: 8px;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

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

.show-more-btn i {
    margin-left: 6px;
    transition: transform 0.3s ease;
}

.show-more-btn.expanded i {
    transform: rotate(180deg);
}

/* 加载指示器样式 */
.ai-loading-indicator {
    color: #666;
}

body.dark-mode .ai-result {
    border-left-color: var(--primary-light);
}

body.dark-mode .ai-loading-indicator {
    color: #aaa;
}

body.dark-mode .show-more-btn {
    color: var(--primary-light);
    border-color: var(--primary-dark);
}

body.dark-mode .show-more-btn:hover {
    background-color: rgba(80, 250, 123, 0.1);
}

/* 安全搜索按钮深色模式适配 */
body.dark-mode .safe-search-options {
    background-color: rgba(30, 30, 30, 0.8);
    border-color: var(--border-dark);
}

body.dark-mode .safe-search-options span {
    color: var(--text-dark);
}

body.dark-mode .safe-search-btn:not(.active) {
    background-color: var(--hover-dark);
    color: var(--text-dark);
}