/* 
整体网页样式设计
利用CSS3技术实现响应式、高端、科技感的网页效果。
包含渐变背景、阴影效果、动画过渡等高级样式。
确保兼容各种设备和屏幕尺寸，提供流畅的用户体验。
*/

/* 设置全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #2E7D32, #6D4C41);
    color: #FFFFFF;
    overflow-x: hidden;
    transition: background 0.5s ease;
}

/* 头部导航栏样式 */
header {
    background: linear-gradient(90deg, #0D47A1, #455A64);
    padding: 20px;
    text-align: center;
    position: fixed;
    width: 100%;
    top: 0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    z-index: 1000;
}

/* 导航链接样式 */
nav a {
    color: #FFFFFF;
    margin: 0 15px;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #FF9800;
}

/* 主要内容容器 */
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 20px;
    padding: 100px 20px 20px 20px; /* 顶部留下导航栏空间 */
}

/* 模块样式 */
.module {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.module:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0,0,0,0.3);
}

/* 图片样式 */
img.decorative {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

img.decorative:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
}

/* 标题样式 */
h2, h3 {
    color: #FFFFFF;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

h2 {
    font-size: 24px;
    margin-bottom: 10px;
}

h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

/* 段落样式 */
p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 15px;
}

/* 代码块样式 */
pre {
    background-color: rgba(0,0,0,0.7);
    padding: 15px;
    border-radius: 8px;
    overflow: auto;
}

pre code {
    color: #00E676;
    font-family: 'Courier New', monospace;
    position: relative;
}

/* 给代码块添加标题 */
pre code::before {
    content: '代码示例';
    display: block;
    font-size: 14px;
    color: #FFD54F;
    margin-bottom: 5px;
}

/* 按钮样式 */
.button {
    background-color: #1E88E5;
    color: #FFFFFF;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.button:hover {
    background-color: #1565C0;
    transform: translateY(-3px);
}

/* 折叠区域样式 */
.details {
    background-color: rgba(255,255,255,0.1);
    border-radius: 5px;
    padding: 10px;
}

summary {
    font-weight: bold;
    cursor: pointer;
}

/* 暗色模式切换 */
[data-theme="dark"] {
    background: linear-gradient(135deg, #1B5E20, #4E342E);
    color: #FFFFFF;
}

[data-theme="dark"] header {
    background: linear-gradient(90deg, #0D47A1, #455A64);
}

[data-theme="dark"] .module {
    background-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] pre {
    background-color: rgba(255,255,255,0.2);
    color: #00E676;
}

/* 响应式设计调整 */
@media (max-width: 768px) {
    header {
        padding: 15px;
    }

    nav a {
        margin: 0 10px;
        font-size: 14px;
    }

    .container {
        grid-template-columns: 1fr;
        padding: 80px 15px 15px 15px;
    }

    h2 {
        font-size: 20px;
    }

    h3 {
        font-size: 18px;
    }

    p {
        font-size: 14px;
    }

    .button {
        padding: 8px 16px;
        font-size: 14px;
    }
}