/* 基础样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #1abc9c;
    --text-color: #333;
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.9);
    --footer-bg: #2c3e50;
    --footer-text: #ecf0f1;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* 夜间模式变量 */
[data-theme="dark"] {
    --primary-color: #1abc9c;
    --secondary-color: #16a085;
    --accent-color: #3498db;
    --text-color: #ecf0f1;
    --bg-color: #2c3e50;
    --card-bg: #34495e;
    --header-bg: rgba(44, 62, 80, 0.9);
    --footer-bg: #1a252f;
    --footer-text: #bdc3c7;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 粒子背景 */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background-color: var(--bg-color);
    transition: var(--transition);
}

/* 头部样式 */
header {
    background-color: var(--header-bg);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: var(--transition);
}

nav ul li a:hover, nav ul li a.active {
    color: var(--primary-color);
    background-color: rgba(52, 152, 219, 0.1);
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 4px;
    transition: var(--transition);
}

#theme-toggle:hover {
    color: var(--primary-color);
    background-color: rgba(52, 152, 219, 0.1);
}

/* 主要内容 */
main {
    padding-top: 80px;
    min-height: calc(100vh - 120px);
}

section {
    padding: 60px 0;
}

h2, h3, h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

h2 {
    font-size: 2.2rem;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--accent-color);
}

h3 {
    font-size: 1.8rem;
}

h4 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

p {
    margin-bottom: 15px;
}

/* Hero 区域 */
.hero {
    text-align: center;
    padding: 100px 0;
    position: relative;
}

.hero-content h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    color: var(--text-color);
}

.stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    background-color: var(--card-bg);
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    min-width: 180px;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.stat-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* 关于区域 */
.about-content {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 900px;
    margin: 0 auto;
}

/* 特色区域 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

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

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* 加入社区区域 */
.join-content {
    max-width: 900px;
    margin: 0 auto;
}

.social-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.social-section, .qq-section {
    padding: 20px;
    border-radius: 8px;
    background-color: rgba(52, 152, 219, 0.05);
    transition: var(--transition);
}

.social-section:hover, .qq-section:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.social-section h4, .qq-section h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
    font-size: 1.3rem;
    position: relative;
    padding-bottom: 10px;
}

.social-section h4::after, .qq-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
}

.social-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.social-btn {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
}

.social-btn i {
    margin-right: 10px;
    font-size: 1.2rem;
}

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

.qq-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.qq-text {
    flex: 1;
}

.qq-text p {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.qq-text i {
    margin-right: 10px;
    color: var(--primary-color);
    width: 20px;
    text-align: center;
}

.qq-qrcode {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    object-fit: cover;
    margin-left: 20px;
    border: 2px solid var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .social-card {
        grid-template-columns: 1fr;
    }
    
    .qq-info {
        flex-direction: column;
        text-align: center;
    }
    
    .qq-text p {
        justify-content: center;
    }
    
    .qq-qrcode {
        margin: 20px 0 0;
    }
}

/* 趣味按钮区域 */
.buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin: 30px 0;
}

.fun-btn {
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.fun-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.fun-fact-display {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-top: 20px;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

/* 服务器概况页特定样式 */
.version-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    margin: 30px auto;
    max-width: 600px;
}

.version-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.warning {
    color: #e74c3c;
    margin-top: 15px;
    font-weight: 500;
}

.bases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.base-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

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

.base-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.base-info {
    padding: 20px;
}

.plugins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.plugin-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.plugin-card i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* 页脚样式 */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 30px 0;
    text-align: center;
}

.footer-links {
    margin-top: 20px;
}

.footer-links a {
    color: var(--footer-text);
    text-decoration: none;
    margin: 0 15px;
    transition: var(--transition);
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 15px;
    }
    
    .stats {
        flex-direction: column;
        align-items: center;
    }
    
    .stat-item {
        width: 100%;
        max-width: 300px;
        margin-bottom: 15px;
    }
    
    .hero-content h2 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
}

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

section {
    animation: fadeIn 0.6s ease-out forwards;
}

section:nth-child(2) { animation-delay: 0.1s; }
section:nth-child(3) { animation-delay: 0.2s; }
section:nth-child(4) { animation-delay: 0.3s; }
section:nth-child(5) { animation-delay: 0.4s; }