/* 基础变量定义 */
:root {
    --bg-dark: #0F172A;
    --card-bg: #1E293B;
    --primary-blue: #3B82F6;
    --primary-glow: rgba(59, 130, 246, 0.15);
    --success-green: #10B981;
    --warning-yellow: #F59E0B;
    --danger-red: #EF4444;
    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;
    --border-color: rgba(59, 130, 246, 0.2);
    --grid-line: rgba(148, 163, 184, 0.1);
}

/* 全局样式 */
body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* 网格背景 */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
}

/* BI看板头部 */
.bi-header {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
}

.header-content {
    max-width: 100%;
}

.bi-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    background: linear-gradient(90deg, var(--primary-blue), #60A5FA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bi-meta {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.bi-meta span {
    margin-right: 1.5rem;
    display: inline-flex;
    align-items: center;
}

.bi-meta i {
    margin-right: 0.5rem;
    color: var(--primary-blue);
}

/* 时间选择器样式 */
.time-selector .btn-group {
    background: rgba(59, 130, 246, 0.1);
    border-radius: 6px;
    padding: 2px;
}

.time-selector .btn {
    font-size: 0.85rem;
    padding: 0.375rem 0.75rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
}

.time-selector .btn.active {
    background: var(--primary-blue);
    color: white;
    border-radius: 4px;
}

.time-selector .btn:hover:not(.active) {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-blue);
}

/* 数据流转视图 */
.data-flow-container {
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 2rem;
    position: relative;
    backdrop-filter: blur(10px);
}

/* 数据节点 */
.data-node {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.data-node::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    padding: 1px;
    background: linear-gradient(45deg, var(--primary-blue), transparent);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.data-node:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 20px var(--primary-glow);
}

/* 数据流线条 */
.data-flow-line {
    height: 2px;
    background: linear-gradient(90deg, 
        transparent,
        var(--primary-blue),
        transparent
    );
    position: relative;
    overflow: hidden;
}

.data-flow-line::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent,
        var(--primary-blue),
        transparent
    );
    animation: flowAnimation 2s infinite linear;
}

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

/* 数据指标卡片 */
.metric-card {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-shadow: 0 0 10px var(--primary-glow);
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 图表容器 */
.chart-container {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    height: 300px;
    position: relative;
}

/* 数据表格 */
.data-table {
    background: rgba(30, 41, 59, 0.8);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.data-table th {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

/* 状态标签 */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.status-active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-green);
}

.status-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-yellow);
}

/* 动画效果 */
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 var(--primary-glow); }
    70% { box-shadow: 0 0 0 10px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .bi-title {
        font-size: 2rem;
    }
    
    .data-flow-container {
        padding: 1rem;
    }
    
    .chart-container {
        height: 250px;
    }
}