/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00c896;
    --secondary-color: #0099ff;
    --accent-color: #ff6b6b;
    --dark-color: #0a192f;
    --light-color: #ffffff;
    --gray-color: #8892b0;
    --card-bg: rgba(10, 25, 47, 0.7);
    --text-shadow: 0 0 10px rgba(0, 200, 150, 0.5);
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--dark-color);
    color: var(--light-color);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 粒子背景 */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background: linear-gradient(135deg, #0a192f 0%, #112240 100%);
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部 */
.header {
    background: rgba(10, 25, 47, 0.8);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 28px;
    color: var(--primary-color);
    text-shadow: var(--text-shadow);
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--gray-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s;
}

.nav-link:hover, .nav-link.active {
    color: var(--light-color);
}

.nav-link.logout {
    color: var(--gray-color);
    margin-left: 20px;
    padding: 5px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link.enterprise {
    color: var(--primary-color);
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 1px solid var(--primary-color);
}

.nav-link.enterprise:hover {
    background-color: var(--primary-color);
    color: var(--light-color);
}

.nav-link.logout:hover {
    color: #e74c3c;
    background-color: rgba(231, 76, 60, 0.1);
}

.nav-link.logout i {
    color: var(--light-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

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

.section {
    display: none;
    padding: 40px 0;
}

.section.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

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

.section-title {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 200, 150, 0.2);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 5px 15px rgba(0, 200, 150, 0.3);
}

.stat-icon i {
    font-size: 24px;
    color: var(--light-color);
}

.stat-info h3 {
    font-size: 16px;
    color: var(--gray-color);
    margin-bottom: 5px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--light-color);
}

.stat-value span {
    font-size: 14px;
    font-weight: 400;
    color: var(--gray-color);
}

.stat-change {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
}

.stat-change.positive {
    color: var(--primary-color);
}

.stat-change.negative {
    color: var(--accent-color);
}

/* 图表容器 */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 25px;
}

.chart-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    height: 350px;
    display: flex;
    flex-direction: column;
}

.chart-card h3 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--light-color);
}

.chart-card canvas {
    flex-grow: 1;
    width: 100%;
}

/* 监测网格 */
.monitoring-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.monitor-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    height: 400px;
    display: flex;
    flex-direction: column;
}

.monitor-card h3 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--light-color);
}

.monitor-value {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-shadow: var(--text-shadow);
}

.monitor-value small {
    font-size: 16px;
    font-weight: 400;
    color: var(--gray-color);
}

.monitor-card canvas {
    flex-grow: 1;
    width: 100%;
    min-height: 200px;
}

/* 碳排放源分析 */
.source-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.source-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.source-info {
    display: flex;
    justify-content: space-between;
}

.source-name {
    font-weight: 500;
}

.source-value {
    color: var(--primary-color);
    font-weight: 500;
}

.source-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.source-progress {
    height: 100%;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 1s ease-in-out;
}

/* 能耗网格 */
.energy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.energy-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    height: 350px;
    display: flex;
    flex-direction: column;
}

.energy-card h3 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--light-color);
}

.energy-card canvas {
    flex-grow: 1;
    width: 100%;
}

/* 效率指标 */
.efficiency-metrics {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 30px;
}

.efficiency-metrics h3 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--light-color);
}

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

.metric-item {
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border-left: 3px solid var(--primary-color);
}

.metric-label {
    font-size: 14px;
    color: var(--gray-color);
    margin-bottom: 5px;
}

.metric-value {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 5px;
}

.metric-value span {
    font-size: 14px;
    font-weight: 400;
    color: var(--gray-color);
}

.metric-status {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.metric-status.good {
    background-color: rgba(0, 200, 150, 0.2);
    color: var(--primary-color);
}

.metric-status.normal {
    background-color: rgba(255, 193, 7, 0.2);
    color: #ffc107;
}

.metric-status.excellent {
    background-color: rgba(0, 153, 255, 0.2);
    color: var(--secondary-color);
}

/* 按钮样式 */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.btn {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn.primary {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: var(--light-color);
    box-shadow: 0 5px 15px rgba(0, 200, 150, 0.3);
}

.btn.primary:hover {
    box-shadow: 0 8px 20px rgba(0, 200, 150, 0.4);
}

.btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--light-color);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn.tertiary {
    background: transparent;
    color: var(--light-color);
    border: 1px solid var(--primary-color);
}

.btn.tertiary:hover {
    background: rgba(0, 200, 150, 0.1);
}

/* AI助手 */
.ai-container {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
}

.ai-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 200, 150, 0.3);
    flex-shrink: 0;
}

.ai-avatar i {
    font-size: 36px;
    color: var(--light-color);
}

.ai-chat {
    flex-grow: 1;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    height: 55600px;
    max-height: 550px;
}

.chat-messages {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-height: 640px;
}

.message {
    max-width: 70%;
    padding: 15px;
    border-radius: 15px;
}

.ai-message {
    background: rgba(0, 200, 150, 0.1);
    border-left: 3px solid var(--primary-color);
    align-self: flex-start;
}

.user-message {
    background: rgba(0, 153, 255, 0.1);
    border-left: 3px solid var(--secondary-color);
    align-self: flex-end;
}

.chat-input {
    display: flex;
    padding: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.chat-input input {
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 10px 15px;
    color: var(--light-color);
    font-size: 16px;
}

.chat-input button {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 8px;
    color: var(--light-color);
    width: 40px;
    height: 40px;
    margin-left: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.chat-input button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 200, 150, 0.3);
}

/* 快速提问 */
.quick-questions {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.quick-questions h3 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--light-color);
}

.question-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.question-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.question-card:hover {
    background: rgba(0, 200, 150, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

/* 页脚 */
.footer {
    padding: 20px 0;
    text-align: center;
    color: var(--gray-color);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .charts-container, .monitoring-grid, .energy-grid {
        grid-template-columns: 1fr;
    }

    .ai-container {
        flex-direction: column;
        align-items: center;
    }

    .ai-chat {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav ul {
        gap: 15px;
    }

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

    .action-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .question-cards {
        grid-template-columns: 1fr;
    }
}

/* 动画效果 */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 2s infinite;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}