/* 全局样式设置 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298); /* 渐变背景，营造科技感 */
    color: #ffffff;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(44, 62, 80, 0.9); /* 半透明背景 */
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); /* 轻微阴影 */
    transition: background 0.3s;
    z-index: 1000;
}

.navbar.scrolled {
    background: #2c3e50; /* 滚动后背景色变深 */
}

.navbar .logo {
    font-size: 1.5em;
    color: #ecf0f1;
    text-decoration: none;
}

.navbar .nav-links a {
    color: #ecf0f1;
    margin: 0 15px;
    text-decoration: none;
    transition: color 0.3s;
}

.navbar .nav-links a:hover {
    color: #e67e22; /* 悬停时颜色变化 */
}

/* 主要内容区 */
.container {
    display: flex;
    flex-wrap: wrap;
    margin: 100px auto 50px; /* 上方留出导航栏空间 */
    max-width: 1200px;
    padding: 20px;
}

.section {
    flex: 1 1 500px; /* 每个板块不小于500px */
    background: rgba(255, 255, 255, 0.1);
    margin: 15px;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2); /* 阴影效果 */
    transition: transform 0.3s, box-shadow 0.3s;
}

.section:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

.section img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    transition: transform 0.3s;
}

.section img:hover {
    transform: scale(1.05);
}

.section h2, .section h3, .section h4 {
    color: #ecf0f1;
    margin-bottom: 10px;
}

.section p {
    font-size: 16px;
    line-height: 1.6;
    color: #bdc3c7;
}

.accent {
    color: #e67e22; /* 辅助色用于强调 */
}

/* 代码块样式 */
pre {
    background: #2c3e50;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
    margin: 20px 0;
}

code {
    color: #ecf0f1;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
}

/* 交互动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 1s forwards;
}

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

.scroll-triggered {
    transition: transform 0.5s ease-in-out;
}

.scroll-triggered.active {
    transform: scale(1.05);
}

/* 实时监控面板 */
.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px;
}

.widget {
    background: #ffffff;
    border: 1px solid #bdc3c7;
    border-radius: 10px;
    padding: 15px;
    position: relative;
}

.widget::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 5px;
    width: 100%;
    background: linear-gradient(to right, #27ae60, #2ecc71);
    animation: loading 3s linear infinite;
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* 模块化布局 */
.module-header {
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s;
}

.module-header:hover {
    background: #f0f0f0;
}

.module-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.module.active .module-content {
    max-height: 500px;
}

.icon {
    margin-right: 10px;
    stroke: #2980b9;
    stroke-width: 2;
    fill: none;
}

/* 数据可视化 */
.chart-bar {
    width: 100%;
    background: #ecf0f1;
    border-radius: 5px;
    overflow: hidden;
    margin: 10px 0;
}

.chart-bar::after {
    content: '';
    display: block;
    height: 100%;
    width: 0;
    background: #3498db;
    transition: width 1s ease-in-out;
}

.chart-bar.animate::after {
    width: 75%;
}

/* 案例研究模块 */
.case-study {
    perspective: 1000px;
    margin: 20px 0;
}

.case-study-inner {
    position: relative;
    width: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.case-study:hover .case-study-inner {
    transform: rotateY(180deg);
}

.case-study-front, .case-study-back {
    position: absolute;
    width: 100%;
    backface-visibility: hidden;
    padding: 20px;
    border: 1px solid #bdc3c7;
    border-radius: 10px;
    background: #ffffff;
}

.case-study-back {
    transform: rotateY(180deg);
    opacity: 0.9;
}

/* 监控面板细节 */
.monitor-panel {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    padding: 20px;
    background: #34495e;
    border-radius: 10px;
}

.monitor-item {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.monitor-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: skewX(-45deg);
    animation: slide 3s linear infinite;
}

@keyframes slide {
    from { left: -100%; }
    to { left: 100%; }
}

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

    .nav-links {
        display: none;
    }

    .navbar .nav-links a {
        margin: 10px 0;
    }

    .container {
        flex-direction: column;
        margin: 120px auto 20px;
    }
}