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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    line-height: 1.6;
}

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

/* 顶部导航栏 */
.navbar {
    background-color: #1e1e1e;
    border-bottom: 1px solid #333;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

.title {
    font-size: 24px;
    font-weight: 600;
    color: #00bcd4;
    text-shadow: 0 0 10px rgba(0, 188, 212, 0.5);
}

.filter-section {
    display: flex;
    align-items: center;
    gap: 20px;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-item label {
    font-size: 14px;
    color: #b0b0b0;
}

.filter-item input[type="datetime-local"],
.filter-item input[type="number"],
.filter-item select {
    background-color: #2c2c2c;
    border: 1px solid #444;
    border-radius: 4px;
    padding: 8px 12px;
    color: #e0e0e0;
    font-size: 14px;
}

.filter-item input[type="number"] {
    width: 80px;
}

.filter-item input[type="datetime-local"]:focus,
.filter-item input[type="number"]:focus,
.filter-item select:focus {
    outline: none;
    border-color: #00bcd4;
    box-shadow: 0 0 0 2px rgba(0, 188, 212, 0.2);
}

#apply-filter {
    background-color: #00bcd4;
    color: #121212;
    border: none;
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

#apply-filter:hover {
    background-color: #00acc1;
    box-shadow: 0 0 10px rgba(0, 188, 212, 0.5);
}

/* 主内容区 */
.main-content {
    padding: 30px 0;
}

/* 左侧数据概览卡片 */
.overview-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.overview-card {
    background-color: #1e1e1e;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    border-left: 4px solid #00bcd4;
    transition: all 0.3s ease;
}

.overview-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 188, 212, 0.2);
}

.overview-card h3 {
    font-size: 14px;
    font-weight: 500;
    color: #b0b0b0;
    margin-bottom: 10px;
}

.card-value {
    font-size: 28px;
    font-weight: 700;
    color: #00bcd4;
    margin-bottom: 5px;
}

.card-unit {
    font-size: 12px;
    color: #888;
}

/* 右侧图表展示区 */
.charts-section {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.chart-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
}

.chart-container {
    background-color: #1e1e1e;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.chart-container h3 {
    font-size: 16px;
    font-weight: 500;
    color: #e0e0e0;
    margin-bottom: 15px;
}

.chart {
    width: 100%;
    height: 350px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .chart-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .filter-section {
        flex-wrap: wrap;
    }

    .overview-section {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-container {
        padding: 15px;
    }

    .chart {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .overview-section {
        grid-template-columns: 1fr;
    }

    .filter-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .filter-item input[type="datetime-local"],
    .filter-item select {
        width: 100%;
    }
}