/**
 * charts.css - 图表相关样式
 */

/* ===================== 图表容器 ===================== */
.chart-container {
    padding: 20px 0;
}

.chart-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ===================== 柱状图 ===================== */
.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 150px;
    padding: 0 10px;
}

.bar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    justify-content: flex-end;
}

.bar {
    width: 100%;
    max-width: 40px;
    background: var(--primary-gradient);
    border-radius: 6px 6px 0 0;
    transition: height 0.5s ease;
    min-height: 4px;
    position: relative;
}

.bar:hover {
    opacity: 0.8;
}

.bar-value {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.bar-label {
    margin-top: 8px;
    font-size: 11px;
    color: var(--text-secondary);
    text-align: center;
}

/* ===================== 高峰时段热力图 ===================== */
.heatmap {
    display: grid;
    grid-template-columns: repeat(24, 1fr);
    gap: 2px;
    padding: 10px 0;
}

.heatmap-cell {
    aspect-ratio: 1;
    border-radius: 4px;
    background: var(--border-color);
    position: relative;
    cursor: pointer;
    transition: transform 0.2s;
}

.heatmap-cell:hover {
    transform: scale(1.2);
    z-index: 1;
}

.heatmap-cell.level-1 { background: rgba(102, 126, 234, 0.2); }
.heatmap-cell.level-2 { background: rgba(102, 126, 234, 0.4); }
.heatmap-cell.level-3 { background: rgba(102, 126, 234, 0.6); }
.heatmap-cell.level-4 { background: rgba(102, 126, 234, 0.8); }
.heatmap-cell.level-5 { background: rgba(102, 126, 234, 1); }

/* 高峰时段标记 */
.heatmap-cell.peak {
    box-shadow: 0 0 0 2px #ff6b6b;
    animation: peakBlink 2s ease-in-out infinite;
}

@keyframes peakBlink {
    0%, 100% { box-shadow: 0 0 0 2px #ff6b6b; }
    50% { box-shadow: 0 0 0 2px #ff8e53, 0 0 8px rgba(255, 107, 107, 0.5); }
}

/* 高峰总结 */
.peak-summary {
    background: linear-gradient(135deg, #fff5f5, #fff0f0);
    border-left: 3px solid #ff6b6b;
    padding: 8px 12px;
    border-radius: 8px;
    margin-bottom: 12px;
}

.peak-info {
    font-size: 12px;
    color: var(--text-primary);
    margin: 4px 0;
}

.peak-info strong {
    color: #ff6b6b;
    font-weight: 700;
}

.heatmap-labels {
    display: grid;
    grid-template-columns: repeat(24, 1fr);
    gap: 2px;
    margin-top: 4px;
}

.heatmap-label {
    font-size: 10px;
    color: var(--text-secondary);
    text-align: center;
}

.heatmap-legend {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 11px;
    color: var(--text-secondary);
}

.legend-colors {
    display: flex;
    gap: 3px;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 3px;
}

.legend-color.level-0 { background: var(--border-color); }
.legend-color.level-1 { background: rgba(102, 126, 234, 0.2); }
.legend-color.level-2 { background: rgba(102, 126, 234, 0.4); }
.legend-color.level-3 { background: rgba(102, 126, 234, 0.6); }
.legend-color.level-4 { background: rgba(102, 126, 234, 0.8); }
.legend-color.level-5 { background: rgba(102, 126, 234, 1); }

/* ===================== 饼图样式 ===================== */
.pie-legend {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pie-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--card-bg);
    border-radius: 8px;
}

.pie-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.pie-name {
    flex: 1;
    font-size: 13px;
    color: var(--text-primary);
}

.pie-value {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ===================== 日历热图 ===================== */
.calendar-heatmap {
    display: grid;
    grid-template-columns: repeat(30, 1fr);
    gap: 3px;
}

.cal-day {
    aspect-ratio: 1;
    border-radius: 3px;
    background: var(--border-color);
}

.cal-day.level-1 { background: rgba(102, 126, 234, 0.25); }
.cal-day.level-2 { background: rgba(102, 126, 234, 0.5); }
.cal-day.level-3 { background: rgba(102, 126, 234, 0.75); }
.cal-day.level-4 { background: rgba(102, 126, 234, 1); }

/* ===================== 对比图表 ===================== */
.compare-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.compare-tab-btn {
    flex: 1;
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.compare-tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.compare-tab-btn.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
}

.compare-content {
    display: block;
}

.compare-content.hidden {
    display: none;
}

.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.compare-item {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
}

.compare-label {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.compare-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.compare-change {
    font-size: 12px;
    font-weight: 600;
    margin-top: 4px;
}

.compare-change.up { color: #10b981; }
.compare-change.down { color: #ef4444; }