/* 全局样式设置 */
/* 设置页面的背景色、字体和基本布局 */
body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #0D2C4B 70%, #F3B505 25%, #FFD700 5%);
    font-family: 'Roboto', sans-serif;
    color: #333333;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(13, 44, 75, 0.9);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar a {
    color: #F3B505;
    text-decoration: none;
    margin: 0 15px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #FFD700;
}

/* 章节导航样式 */
.chapter-nav {
    position: fixed;
    top: 60px;
    left: 20px;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 10px 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.chapter-nav a {
    display: block;
    color: #0D2C4B;
    text-decoration: none;
    margin: 10px 0;
    font-size: 14px;
    transition: color 0.3s ease;
}

.chapter-nav a:hover {
    color: #F3B505;
}

/* 主内容区样式 */
.container {
    max-width: 1200px;
    margin: 100px auto 50px auto;
    padding: 20px;
}

/* 文章标题样式 */
article h2 {
    font-size: 24px;
    color: #0D2C4B;
    margin-bottom: 20px;
    border-bottom: 2px solid #F3B505;
    padding-bottom: 10px;
}

article h3 {
    font-size: 20px;
    color: #1E90FF;
    margin-top: 30px;
    margin-bottom: 15px;
}

article p {
    font-size: 16px;
    color: #333333;
    margin-bottom: 15px;
}

article pre {
    background-color: #f4f4f4;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 20px 0;
}

article code {
    font-family: 'Courier New', Courier, monospace;
    color: #D35400;
}

/* 图片样式 */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-grid img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

/* 提示信息样式 */
.notification {
    background-color: rgba(255, 233, 0, 0.1);
    border-left: 4px solid #FFD700;
    padding: 15px 20px;
    margin: 30px 0;
    font-size: 18px;
    color: #333333;
    border-radius: 4px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .chapter-nav {
        position: static;
        margin-bottom: 20px;
    }

    .image-grid {
        grid-template-columns: 1fr;
    }

    article h2 {
        font-size: 20px;
    }

    article h3 {
        font-size: 18px;
    }

    article p {
        font-size: 15px;
    }
}

/* 按钮样式 */
.button {
    background-color: #1E90FF;
    color: #FFFFFF;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
    font-size: 16px;
}

.button:hover {
    background-color: #FFD700;
    transform: translateY(-3px);
}

/* 卡片式布局样式 */
.card {
    background-color: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

/* CSS 代码示例样式 */
.code-sample {
    background-color: #282C34;
    color: #ABB2BF;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    margin: 20px 0;
}

.code-sample .language-css {
    color: #E06C75;
}

/* 按钮悬停效果 */
.button-hover:hover {
    background-color: #2A5298;
    color: #FFFFFF;
}

/* 过渡动画 */
.fade-in {
    animation: fadeIn 2s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 分隔线样式 */
.divider {
    height: 2px;
    background: linear-gradient(90deg, #1E90FF, #FFD700);
    margin: 40px 0;
    border: none;
    border-radius: 1px;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th, table td {
    padding: 12px 15px;
    border: 1px solid #E0E0E0;
    text-align: left;
}

table th {
    background-color: #F3B505;
    color: #FFFFFF;
}

table tr:nth-child(even) {
    background-color: #F9F9F9;
}

/* 按需添加更多样式以满足设计需求 */