/**
 * CFM邮件数据看板 - UI/UX重构增强样式
 * Phase 1: 视觉层次重构
 * 
 * 设计原则：
 * 1. 三层指标卡片：核心/重要/监控
 * 2. 图表分组：邮件/客户/业务
 * 3. 智能交互：悬停预览/趋势显示
 * 4. 玻璃拟态：统一Crystal Glass V3风格
 */

/* ==================== 指标卡片三层设计 ==================== */

/* 一级指标卡片 - 核心指标（收件/发件/回复时长） */
.metric-card-primary {
    /* 浅色玻璃拟态背景 + 蓝色强调点缀 */
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(240, 247, 250, 0.9) 50%,
        rgba(232, 243, 248, 0.85) 100%);
    
    border: 1px solid rgba(68, 119, 147, 0.2);
    border-top: 3px solid var(--primary-color);
    box-shadow: 
        0 8px 24px rgba(68, 119, 147, 0.12),
        0 2px 8px rgba(68, 119, 147, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    transition: var(--transition-slow);
    position: relative;
    overflow: visible;
}

/* 左上角装饰圆点 */
.metric-card-primary::before {
    content: '';
    position: absolute;
    top: 12px;
    right: 12px;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(68, 119, 147, 0.4);
}

/* 底部渐变装饰线 */
.metric-card-primary::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent 0%,
        var(--primary-color) 20%,
        var(--primary-light) 50%,
        var(--primary-color) 80%,
        transparent 100%);
    opacity: 0.6;
}

.metric-card-primary:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: rgba(68, 119, 147, 0.4);
    box-shadow: 
        0 12px 32px rgba(68, 119, 147, 0.18),
        0 4px 12px rgba(68, 119, 147, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.metric-card-primary .metric-title {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.02em;
}

.metric-card-primary .metric-value {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 2.25rem;
    text-shadow: none;
}

.metric-card-primary .metric-unit {
    color: var(--text-tertiary);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    font-weight: 500;
}

/* 二级指标卡片 - 重要指标（新客户/回复率） */
.metric-card-secondary {
    background: var(--bg-card);
    
    border: 2px solid var(--accent-color);
    box-shadow: 
        0 4px 16px rgba(196, 180, 84, 0.15),
        var(--shadow-card);
    border-radius: var(--radius-lg);
    transition: var(--transition-slow);
    position: relative;
}

.metric-card-secondary::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.metric-card-secondary:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 8px 24px rgba(196, 180, 84, 0.25),
        0 4px 12px rgba(68, 119, 147, 0.1);
    border-color: var(--accent-light);
}

.metric-card-secondary .metric-title {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
}

.metric-card-secondary .metric-value {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 2rem;
}

.metric-card-secondary .metric-unit {
    color: var(--text-tertiary);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* 三级指标卡片 - 监控指标（负面情绪/业务踩线） */
.metric-card-tertiary {
    background: var(--bg-card);
    
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    position: relative;
}

/* 需关注邮件（担忧+投诉） - 红色强调边框 */
.metric-card-tertiary.negative {
    border-left: 4px solid var(--error);
}

.metric-card-tertiary.negative .metric-value {
    color: var(--error);
}

/* 业务踩线 - 橙色强调边框 */
.metric-card-tertiary.warning {
    border-left: 4px solid var(--warning);
}

.metric-card-tertiary.warning .metric-value {
    color: var(--warning);
}

/* 情绪标签样式 */
.sentiment-badge-positive  { background: #ECFDF5; color: #065F46; }
.sentiment-badge-neutral   { background: #F3F4F6; color: #374151; }
.sentiment-badge-concern   { background: #FFFBEB; color: #92400E; }
.sentiment-badge-complaint { background: #FEF2F2; color: #991B1B; }

.metric-card-tertiary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--bg-card-hover);
}

.metric-card-tertiary .metric-title {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.metric-card-tertiary .metric-value {
    font-weight: 600;
    font-size: 1.75rem;
}

.metric-card-tertiary .metric-unit {
    color: var(--text-tertiary);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* 指标卡片通用样式 */
.metric-card {
    cursor: pointer;
    position: relative;
}

.metric-card:hover {
    z-index: 1;
}

.metric-card .metric-icon {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 1rem;
    opacity: 0.3;
    transition: var(--transition-base);
}

.metric-card:hover .metric-icon {
    opacity: 0.6;
    transform: scale(1.1);
}

/* 指标趋势指示器 */
.metric-trend {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    margin-top: 0.5rem;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.metric-trend.up {
    color: var(--success);
    background: rgba(112, 179, 164, 0.15);
}

.metric-trend.down {
    color: var(--error);
    background: rgba(209, 154, 154, 0.15);
}

.metric-trend.neutral {
    color: var(--text-tertiary);
    background: rgba(143, 153, 163, 0.1);
}

/* ==================== 图表区域分组设计 ==================== */

/* 图表分组容器 */
.chart-section {
    margin-bottom: var(--spacing-xl);
}

.chart-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-primary);
}

.chart-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-section-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

/* 邮件分析组 */
.chart-group-email .chart-section-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
}

.chart-group-email .chart-section-title {
    color: var(--primary-color);
}

/* 客户分析组 */
.chart-group-customer .chart-section-icon {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    color: white;
}

.chart-group-customer .chart-section-title {
    color: var(--secondary-color);
}

/* 业务分析组 */
.chart-group-business .chart-section-icon {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: white;
}

.chart-group-business .chart-section-title {
    color: var(--accent-dark);
}

/* 图表网格布局 */
.charts-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.charts-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.charts-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

/* 图表面板增强 */
.chart-panel-enhanced {
    background: var(--bg-card);
    
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: var(--transition-base);
    overflow: hidden;
}

.chart-panel-enhanced:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.chart-panel-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(135deg, 
        rgba(68, 119, 147, 0.03) 0%, 
        rgba(68, 119, 147, 0.01) 100%);
}

.chart-panel-body {
    padding: var(--spacing-md);
}

/* 图表标签页增强 */
.chart-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.chart-tab-btn {
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-primary);
    background: rgba(255, 255, 255, 0.5);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.chart-tab-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary-light);
}

.chart-tab-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-sm);
}

/* ==================== 智能数据预览 ==================== */

/* 指标卡片悬停提示 */
.metric-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: rgba(26, 32, 44, 0.95);
    
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 9999;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    min-width: 200px;
    pointer-events: none;
}

/* 向下定位的提示框（当上方空间不足时） */
.metric-tooltip.tooltip-bottom {
    bottom: auto;
    top: 100%;
    transform: translateX(-50%) translateY(12px);
}

.metric-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(26, 32, 44, 0.95);
}

/* 向下定位时的箭头 */
.metric-tooltip.tooltip-bottom::after {
    top: auto;
    bottom: 100%;
    border-top-color: transparent;
    border-bottom-color: rgba(26, 32, 44, 0.95);
}

.metric-card:hover .metric-tooltip {
    opacity: 1;
    visibility: visible;
}

.metric-tooltip-header {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.metric-tooltip-row {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: 0.25rem;
}

.metric-tooltip-label {
    color: rgba(255, 255, 255, 0.7);
}

.metric-tooltip-value {
    font-weight: 600;
}

/* ==================== 快捷操作面板 ==================== */

.quick-actions-panel {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    width: 240px;
    background: var(--bg-card);
    
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 50;
    padding: var(--spacing-md);
}

.quick-actions-header {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
}

.quick-action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: 0.625rem var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.quick-action-btn:hover {
    background: var(--bg-hover);
    color: var(--primary-color);
}

.quick-action-btn i {
    width: 20px;
    text-align: center;
}

.quick-actions-divider {
    height: 1px;
    background: var(--border-light);
    margin: var(--spacing-sm) 0;
}

/* ==================== 响应式优化 ==================== */

/* 大屏优化（>1366px） */
@media (min-width: 1367px) {
    .metrics-grid {
        grid-template-columns: repeat(7, 1fr);
    }
    
    .metric-card-primary .metric-value {
        font-size: 2.5rem;
    }
    
    .metric-card-secondary .metric-value {
        font-size: 2.25rem;
    }
    
    .chart-container {
        height: 350px;
    }
}

/* 中等屏幕（1024px - 1366px） */
@media (max-width: 1366px) and (min-width: 1024px) {
    .metrics-grid {
        grid-template-columns: repeat(7, 1fr);
        gap: var(--spacing-sm);
    }
    
    .metric-card-primary .metric-value,
    .metric-card-secondary .metric-value {
        font-size: 1.75rem;
    }
    
    .charts-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .charts-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 平板适配（768px - 1023px） */
@media (max-width: 1023px) and (min-width: 768px) {
    .metrics-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-sm);
    }
    
    .charts-grid-4,
    .charts-grid-3 {
        grid-template-columns: 1fr;
    }

    .charts-grid-2 {
        grid-template-columns: 1fr;
    }

    .quick-actions-panel {
        display: none;
    }
}

/* 移动端适配（<768px） */
@media (max-width: 767px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .metric-card-primary,
    .metric-card-secondary,
    .metric-card-tertiary {
        padding: var(--spacing-md);
    }
    
    .metric-card-primary .metric-value,
    .metric-card-secondary .metric-value,
    .metric-card-tertiary .metric-value {
        font-size: 1.5rem;
    }
    
    .charts-grid-4,
    .charts-grid-3,
    .charts-grid-2 {
        grid-template-columns: 1fr;
    }

    .chart-section-header {
        flex-wrap: wrap;
    }
    
    .quick-actions-panel {
        display: none;
    }
    
    .chart-tabs {
        flex-wrap: wrap;
    }
    
    .chart-tab-btn {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
}

/* ==================== 动画效果 ==================== */

@keyframes metricPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(68, 119, 147, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(68, 119, 147, 0);
    }
}

.metric-card-primary.highlight {
    animation: metricPulse 2s ease-out 1; /* 只播放一次 */
}

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

.metric-card {
    animation: slideInUp 0.4s ease forwards;
}

.metric-card:nth-child(1) { animation-delay: 0.05s; }
.metric-card:nth-child(2) { animation-delay: 0.1s; }
.metric-card:nth-child(3) { animation-delay: 0.15s; }
.metric-card:nth-child(4) { animation-delay: 0.2s; }
.metric-card:nth-child(5) { animation-delay: 0.25s; }
.metric-card:nth-child(6) { animation-delay: 0.3s; }
.metric-card:nth-child(7) { animation-delay: 0.35s; }

/* 图表加载动画 */
@keyframes chartFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.chart-panel-enhanced {
    animation: chartFadeIn 0.5s ease forwards;
}

/* ==================== 辅助类 ==================== */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.text-gradient-primary {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-highlight {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.4) 0%, 
        rgba(255, 255, 255, 0.1) 100%);
}