/* 基础样式 */
:root {
    /* 亮色主题 */
    --primary-color: #3a86ff;
    --secondary-color: #8338ec;
    --accent-color: #ff006e;
    --background-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #2b2d42;
    --text-secondary: #6c757d;
    --border-color: rgba(0, 0, 0, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --hover-color: rgba(58, 134, 255, 0.1);
    --glow-color: rgba(58, 134, 255, 0.5);
}

/* 暗色主题 */
[data-theme="dark"] {
    --primary-color: #4cc9f0;
    --secondary-color: #7209b7;
    --accent-color: #f72585;
    --background-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e9ecef;
    --text-secondary: #adb5bd;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --hover-color: rgba(76, 201, 240, 0.1);
    --glow-color: rgba(76, 201, 240, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.5s, color 0.5s, border-color 0.5s, box-shadow 0.5s;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 粒子背景 */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* 头部样式 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    position: relative;
}

.logo-text {
    font-family: 'Rajdhani', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 1.2s ease;
}

.highlight {
    background: linear-gradient(45deg, var(--accent-color), #ff8a9d);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 1.2s ease;
}

.logo:hover .logo-text {
    transform: scale(1.02);
}

.logo:hover .highlight {
    background: linear-gradient(45deg, #ff8a9d, var(--accent-color));
    color: white;
    border-radius: 5px;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 50%;
    position: absolute;
    right: -12px;
    top: 10px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 主题切换按钮 */
.theme-toggle {
    position: relative;
    width: 60px;
    height: 30px;
    background-color: var(--card-bg);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
    cursor: pointer;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.theme-toggle i {
    font-size: 14px;
    color: var(--text-secondary);
    z-index: 1;
}

.toggle-ball {
    position: absolute;
    width: 24px;
    height: 24px;
    background-color: var(--primary-color);
    border-radius: 50%;
    left: 3px;
    transition: transform 0.3s ease;
}

[data-theme="dark"] .toggle-ball {
    transform: translateX(30px);
}

/* 搜索栏样式 */
.search-container {
    margin-bottom: 2rem;
}

.search-box {
    display: flex;
    align-items: center;
    background-color: var(--card-bg);
    border-radius: 50px;
    padding: 0.8rem 1.5rem;
    box-shadow: 0 4px 15px var(--shadow-color);
    position: relative;
    overflow: hidden;
}

.search-box::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    z-index: -1;
    border-radius: 52px;
    opacity: 0;
    transition: opacity 0.3s;
}

.search-box:focus-within::before {
    opacity: 1;
}

.search-box i {
    color: var(--text-secondary);
    margin-right: 10px;
    font-size: 1.2rem;
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 1rem;
    color: var(--text-color);
    padding: 0.5rem 0;
}

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

.search-engines {
    display: flex;
    gap: 8px;
}

.search-engines span {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    background-color: var(--background-color);
    color: var(--text-secondary);
    transition: all 0.3s;
}

.search-engines span.active {
    background-color: var(--primary-color);
    color: white;
}

/* 导航分类标签 */
.nav-category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 2rem;
    position: sticky;
    top: 0;
    background-color: var(--background-color);
    padding: 1rem 0;
    z-index: 10;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background-color: var(--card-bg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.5s ease;
    box-shadow: 0 2px 5px var(--shadow-color);
    position: relative;
    overflow: hidden;
}

.tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s;
    z-index: -1;
}

.tab:hover {
    color: var(--text-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--shadow-color);
}

.tab:hover::before {
    opacity: 0.1;
}

.tab.active {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 10px var(--glow-color);
}

.tab.active::before {
    opacity: 0;
}

/* 分类区域 */
.category-section {
    margin-bottom: 3rem;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50%;
    height: 2px;
    background-color: var(--accent-color);
}

/* 导航卡片 */
.nav-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card {
    display: flex;
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px var(--shadow-color);
    /* 调整为较慢的动画速度 */
    transition: 
        transform 1.2s cubic-bezier(0.28, 0.84, 0.42, 1),
        box-shadow 1s cubic-bezier(0.28, 0.84, 0.42, 1),
        background-color 0.8s ease;
    position: relative;
    height: 100px;
    opacity: 1;
    transform: translateY(0);
    will-change: transform, box-shadow;
}

.card:hover {
    transform: translateY(-0px);
    box-shadow: 0 8px 40px var(--shadow-color);
    /* 保持相同的慢动画速度 */
    transition: 
        transform 1.2s cubic-bezier(0.28, 0.84, 0.42, 1),
        box-shadow 1s cubic-bezier(0.28, 0.84, 0.42, 1);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    opacity: 0;
    /* 较慢的过渡 */
    transition: opacity 0.8s ease;
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 80px;
    min-width: 80px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.03);
    font-size: 2rem;
    color: var(--primary-color);
    /* 较慢的过渡 */
    transition: all 1s ease;
}

[data-theme="dark"] .card-icon {
    background-color: rgba(255, 255, 255, 0.03);
}

.card:hover .card-icon {
    color: var(--accent-color);
    transform: scale(1.1);
}

.card-icon.card-image {
    padding: 15px;
    background-color: transparent;
}

.card-icon.card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 5px;
}

.card-content {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    font-weight: 500;
}

.card-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.card-link {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.card-hover-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at var(--x) var(--y), var(--hover-color) 0%, transparent 50%);
    opacity: 0;
    /* 较慢的过渡 */
    transition: opacity 1.5s ease;
    z-index: 0;
    pointer-events: none;
}

.card:hover .card-hover-effect {
    opacity: 1;
}

/* 添加站点按钮 */
.add-site-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px var(--glow-color);
    cursor: pointer;
    transition: all 0.3s;
    z-index: 100;
}

.add-site-btn:hover {
    transform: scale(1.1) rotate(90deg);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    transform: translateY(0);
    transition: transform 0.3s;
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.close-modal:hover {
    color: var(--accent-color);
}

.modal h2 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.8rem;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--glow-color);
}

.submit-btn {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
    margin-top: 1rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--glow-color);
}

/* 页脚 */
footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-link:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .nav-cards {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .card {
        height: auto;
        min-height: 100px;
    }
    
    .nav-category-tabs {
        overflow-x: auto;
        padding-bottom: 0.5rem;
        flex-wrap: nowrap;
    }
    
    .tab {
        white-space: nowrap;
    }
    
    .search-box {
        padding: 0.6rem 1rem;
    }
    
    .logo-text {
        font-size: 1.5rem;
    }
    
    .add-site-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .nav-cards {
        grid-template-columns: 1fr;
    }
    
    .card-icon {
        width: 60px;
        min-width: 60px;
    }
    
    .search-engines span {
        width: 20px;
        height: 20px;
        font-size: 0.7rem;
    }
    
    .modal-content {
        padding: 1.5rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glow {
    0% {
        box-shadow: 0 0 5px var(--glow-color);
    }
    50% {
        box-shadow: 0 0 20px var(--glow-color);
    }
    100% {
        box-shadow: 0 0 5px var(--glow-color);
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 卡片加载动画 */
.card {
    animation: fadeInUp 0.5s ease forwards;
}

/* 科技感线条装饰 */
.container::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    background: linear-gradient(45deg, transparent 49%, var(--primary-color) 50%, transparent 51%);
    background-size: 10px 10px;
    opacity: 0.1;
    z-index: -1;
}

.container::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 150px;
    height: 150px;
    background: linear-gradient(45deg, transparent 49%, var(--accent-color) 50%, transparent 51%);
    background-size: 10px 10px;
    opacity: 0.1;
    z-index: -1;
}

/* 卡片悬停时的光晕效果 */
.card:hover {
    animation: glow 3s infinite;
}

/* 搜索引擎选择器动画 */
.search-engines span:hover {
    transform: scale(1.2);
}

/* 添加站点按钮脉冲动画 */
.add-site-btn {
    animation: pulse 2s infinite;
}

/* 模态框动画 */
.modal.active .modal-content {
    animation: fadeInUp 0.5s ease;
}