:root {
    --chartboard-surface: #ffffff;
    --chartboard-border: rgba(226, 232, 240, 0.8);
    --chartboard-shadow: 0 10px 30px -20px rgba(15, 23, 42, 0.15);
    --chartboard-title-color: #1f2937;
    --chartboard-subtitle-color: #6b7280;
    --chartboard-card-bg: linear-gradient(180deg, rgba(248, 250, 252, 0.8) 0%, rgba(255, 255, 255, 0.95) 100%);
    --chartboard-card-border: rgba(226, 232, 240, 0.8);
    --chartboard-card-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
    --chartboard-card-hover-shadow: 0 12px 24px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    --chartboard-text-primary: #1f2937;
    --chartboard-text-secondary: #4b5563;
    --chartboard-text-muted: #6b7280;
    --chartboard-loading-bg: rgba(241, 245, 249, 0.6);
    --chartboard-loading-border: rgba(148, 163, 184, 0.25);
    --chartboard-error-bg: rgba(254, 226, 226, 0.6);
    --chartboard-error-border: rgba(248, 113, 113, 0.45);
    --chartboard-error-color: #dc2626;
    --chartboard-heatmap-cell-bg: #e5e7eb;
    --chartboard-heatmap-level-1: #bfdbfe;
    --chartboard-heatmap-level-2: #93c5fd;
    --chartboard-heatmap-level-3: #60a5fa;
    --chartboard-heatmap-level-4: #2563eb;
    --chartboard-heatmap-hover-shadow: rgba(37, 99, 235, 0.2);
    --chartboard-heatmap-tooltip-bg: #ffffff;
    --chartboard-heatmap-tooltip-border: rgba(148, 163, 184, 0.25);
    --chartboard-heatmap-tooltip-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
    --chartboard-heatmap-tooltip-text: #1f2937;
    --chartboard-heatmap-tooltip-strong: #111827;
    --chartboard-heatmap-tooltip-span: #4b5563;
    --chartboard-legend-color: #4b5563;
    --chartboard-legend-value-color: #6b7280;
    --chartboard-heatmap-cell-width: 14px;
    --chartboard-heatmap-cell: 12px;
}

html.dark:not([data-color-scheme='light']):not(.light):not([class*='light']),
html[class~='dark']:not([data-color-scheme='light']):not(.light):not([class*='light']),
html[class*='dark']:not([data-color-scheme='light']):not(.light):not([class*='light']),
html[data-color-scheme='dark']:not([data-color-scheme='light']),
html[data-theme='dark']:not([data-theme='light']),
html[theme='dark']:not([theme='light']),
[data-color-scheme='dark']:not([data-color-scheme='light']),
[data-theme='dark']:not([data-theme='light']),
[theme='dark']:not([theme='light']) {
    --chartboard-surface: rgba(17, 24, 39, 0.92);
    --chartboard-border: rgba(59, 130, 246, 0.18);
    --chartboard-shadow: 0 20px 40px -28px rgba(30, 64, 175, 0.35);
    --chartboard-title-color: #e2e8f0;
    --chartboard-subtitle-color: #94a3b8;
    --chartboard-card-bg: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(17, 24, 39, 0.9) 100%);
    --chartboard-card-border: rgba(59, 130, 246, 0.25);
    --chartboard-card-shadow: inset 0 1px 0 rgba(59, 130, 246, 0.12);
    --chartboard-card-hover-shadow: 0 12px 24px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(59, 130, 246, 0.12);
    --chartboard-text-primary: #e2e8f0;
    --chartboard-text-secondary: #cbd5f5;
    --chartboard-text-muted: #9ca3af;
    --chartboard-loading-bg: rgba(30, 41, 59, 0.9);
    --chartboard-loading-border: rgba(59, 130, 246, 0.25);
    --chartboard-error-bg: rgba(248, 113, 113, 0.15);
    --chartboard-error-border: rgba(248, 113, 113, 0.35);
    --chartboard-error-color: #fecaca;
    --chartboard-heatmap-cell-bg: rgba(148, 163, 184, 0.25);
    --chartboard-heatmap-level-1: rgba(191, 219, 254, 0.35);
    --chartboard-heatmap-level-2: rgba(147, 197, 253, 0.55);
    --chartboard-heatmap-level-3: rgba(96, 165, 250, 0.75);
    --chartboard-heatmap-level-4: rgba(37, 99, 235, 0.85);
    --chartboard-heatmap-hover-shadow: rgba(37, 99, 235, 0.3);
    --chartboard-heatmap-tooltip-bg: rgba(15, 23, 42, 0.92);
    --chartboard-heatmap-tooltip-border: rgba(148, 163, 184, 0.25);
    --chartboard-heatmap-tooltip-shadow: 0 16px 28px rgba(15, 23, 42, 0.45);
    --chartboard-heatmap-tooltip-text: #e2e8f0;
    --chartboard-heatmap-tooltip-strong: #f8fafc;
    --chartboard-heatmap-tooltip-span: #cbd5f5;
    --chartboard-legend-color: #cbd5f5;
    --chartboard-legend-value-color: #94a3b8;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-color-scheme]),
    :root[data-color-scheme='auto'],
    :root[data-color-scheme='system'],
    html:not([data-color-scheme]):not(.light):not([class*='light']),
    html[data-color-scheme='auto']:not(.light):not([class*='light']),
    html[data-color-scheme='system']:not(.light):not([class*='light']) {
        --chartboard-surface: rgba(17, 24, 39, 0.92);
        --chartboard-border: rgba(59, 130, 246, 0.18);
        --chartboard-shadow: 0 20px 40px -28px rgba(30, 64, 175, 0.35);
        --chartboard-title-color: #e2e8f0;
        --chartboard-subtitle-color: #94a3b8;
        --chartboard-card-bg: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(17, 24, 39, 0.9) 100%);
        --chartboard-card-border: rgba(59, 130, 246, 0.25);
        --chartboard-card-shadow: inset 0 1px 0 rgba(59, 130, 246, 0.12);
        --chartboard-card-hover-shadow: 0 12px 24px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(59, 130, 246, 0.12);
        --chartboard-text-primary: #e2e8f0;
        --chartboard-text-secondary: #cbd5f5;
        --chartboard-text-muted: #9ca3af;
        --chartboard-loading-bg: rgba(30, 41, 59, 0.9);
        --chartboard-loading-border: rgba(59, 130, 246, 0.25);
        --chartboard-error-bg: rgba(248, 113, 113, 0.15);
        --chartboard-error-border: rgba(248, 113, 113, 0.35);
        --chartboard-error-color: #fecaca;
        --chartboard-heatmap-cell-bg: rgba(148, 163, 184, 0.25);
        --chartboard-heatmap-level-1: rgba(191, 219, 254, 0.35);
        --chartboard-heatmap-level-2: rgba(147, 197, 253, 0.55);
        --chartboard-heatmap-level-3: rgba(96, 165, 250, 0.75);
        --chartboard-heatmap-level-4: rgba(37, 99, 235, 0.85);
        --chartboard-heatmap-hover-shadow: rgba(37, 99, 235, 0.3);
        --chartboard-heatmap-tooltip-bg: rgba(15, 23, 42, 0.92);
        --chartboard-heatmap-tooltip-border: rgba(148, 163, 184, 0.25);
        --chartboard-heatmap-tooltip-shadow: 0 16px 28px rgba(15, 23, 42, 0.45);
        --chartboard-heatmap-tooltip-text: #e2e8f0;
        --chartboard-heatmap-tooltip-strong: #f8fafc;
        --chartboard-heatmap-tooltip-span: #cbd5f5;
        --chartboard-legend-color: #cbd5f5;
        --chartboard-legend-value-color: #94a3b8;
    }
}

.xhhaocom-chartboard {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
    padding: 12px;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    list-style: none !important;
    margin: 0;
    margin-left: 0 !important;
    padding-left: 0 !important;
}

/* 确保 chartboard 内部元素不会继承列表样式 */
.xhhaocom-chartboard * {
    list-style-type: none !important;
}

.xhhaocom-chartboard-loading,
.xhhaocom-chartboard-error,
.xhhaocom-chartboard-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--chartboard-loading-border);
    background: var(--chartboard-loading-bg);
    font-size: 14px;
    color: var(--chartboard-text-secondary);
    text-align: center;
}

.xhhaocom-chartboard-error {
    color: var(--chartboard-error-color);
    background: var(--chartboard-error-bg);
    border-color: var(--chartboard-error-border);
}

.xhhaocom-chartboard-section {
    border-radius: 18px;
    border: 1px solid var(--chartboard-border);
    background: var(--chartboard-surface);
    box-shadow: var(--chartboard-shadow);
    overflow: hidden;
}

.xhhaocom-chartboard-section:has(.xhhaocom-chartboard-card--heatmap) {
    overflow: hidden;
}

.xhhaocom-chartboard-section:has(.xhhaocom-chartboard-card--heatmap) .xhhaocom-chartboard-section__body {
    overflow-x: auto;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.2) rgba(0, 0, 0, 0.05);
}

@media (max-width: 768px) {
    .xhhaocom-chartboard-section:has(.xhhaocom-chartboard-card--heatmap) {
        overflow: visible;
    }
    
    .xhhaocom-chartboard-section:has(.xhhaocom-chartboard-card--heatmap) .xhhaocom-chartboard-section__body {
        overflow-x: auto;
        overflow-y: visible;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        padding-bottom: 8px;
    }
    
    .xhhaocom-chartboard-card--heatmap {
        min-width: 600px;
    }
}

.xhhaocom-chartboard-section__header {
    padding: 18px 22px 14px;
    border-bottom: 1px solid var(--chartboard-border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.xhhaocom-chartboard-section__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--chartboard-title-color);
}

.xhhaocom-chartboard-section__subtitle {
    font-size: 13px;
    color: var(--chartboard-subtitle-color);
}

.xhhaocom-chartboard-section__body {
    padding: 20px 22px 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.xhhaocom-chartboard-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-radius: 16px;
    border: 1px solid var(--chartboard-card-border);
    background: var(--chartboard-card-bg);
    padding: 16px 18px;
    min-height: 260px;
    box-shadow: var(--chartboard-card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.xhhaocom-chartboard-card--animated {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.xhhaocom-chartboard-card--animated:hover {
    transform: translateY(-4px);
    box-shadow: var(--chartboard-card-hover-shadow);
}

.xhhaocom-chartboard-card__canvas {
    flex: 1 1 auto;
    position: relative;
    min-height: 220px;
}

.xhhaocom-chartboard-card__canvas canvas {
    width: 100% !important;
    height: auto !important;
    max-height: 220px;
    display: block;
}

.xhhaocom-chartboard-card__footer {
    font-size: 12px;
    color: var(--chartboard-text-muted);
}

.xhhaocom-chartboard-card--heatmap {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 18px 20px 16px;
    min-height: auto;
    position: relative;
    overflow: visible;
    width: 100%;
    min-width: max-content;
}

@media (max-width: 768px) {
    .xhhaocom-chartboard-card--heatmap {
        overflow: visible;
        min-width: max-content;
        width: max-content;
    }
}

.xhhaocom-chartboard-heatmap {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto 1fr auto;
    gap: 8px 10px;
}

.xhhaocom-chartboard-heatmap__weekdays {
    grid-column: 1;
    grid-row: 2;
    display: grid;
    grid-template-rows: repeat(7, var(--chartboard-heatmap-cell));
    row-gap: 4px;
    padding-right: 8px;
    font-size: 11px;
    color: var(--chartboard-text-muted);
    align-items: center;
    justify-items: flex-end;
}

.xhhaocom-chartboard-heatmap__weekday {
    height: var(--chartboard-heatmap-cell);
    line-height: var(--chartboard-heatmap-cell);
    padding: 0 4px;
}

.xhhaocom-chartboard-heatmap__weekday.is-placeholder {
    visibility: hidden;
}

.xhhaocom-chartboard-heatmap__months {
    grid-column: 2;
    grid-row: 1;
    display: grid;
    column-gap: 4px;
    font-size: 12px;
    color: var(--chartboard-text-muted);
}

.xhhaocom-chartboard-heatmap__month {
    text-align: left;
}

.xhhaocom-chartboard-heatmap__month.is-placeholder {
    visibility: hidden;
}

.xhhaocom-chartboard-heatmap__grid {
    grid-column: 2;
    grid-row: 2;
    display: grid;
    column-gap: 4px;
}

.xhhaocom-chartboard-heatmap__column {
    display: grid;
    grid-template-rows: repeat(7, var(--chartboard-heatmap-cell));
    row-gap: 4px;
}

.xhhaocom-chartboard-heatmap__day {
    width: var(--chartboard-heatmap-cell);
    height: var(--chartboard-heatmap-cell);
    border-radius: 3px;
    background: var(--chartboard-heatmap-cell-bg);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    cursor: pointer;
}

.xhhaocom-chartboard-heatmap__day[data-level="0"] {
    background: var(--chartboard-heatmap-cell-bg);
}

.xhhaocom-chartboard-heatmap__day[data-level="1"] {
    background: var(--chartboard-heatmap-level-1);
}

.xhhaocom-chartboard-heatmap__day[data-level="2"] {
    background: var(--chartboard-heatmap-level-2);
}

.xhhaocom-chartboard-heatmap__day[data-level="3"] {
    background: var(--chartboard-heatmap-level-3);
}

.xhhaocom-chartboard-heatmap__day[data-level="4"] {
    background: var(--chartboard-heatmap-level-4);
}

.xhhaocom-chartboard-heatmap__day:not(.is-outside):hover {
    transform: scale(1.2);
    box-shadow: 0 4px 10px var(--chartboard-heatmap-hover-shadow);
}

.xhhaocom-chartboard-heatmap__day.is-outside {
    background: transparent;
    opacity: 0.2;
    cursor: default;
}

.xhhaocom-chartboard-heatmap__footer {
    grid-column: 2;
    grid-row: 3;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
}

.xhhaocom-chartboard-heatmap__date-range {
    font-size: 12px;
    color: var(--chartboard-text-muted);
}

.xhhaocom-chartboard-heatmap__legend {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--chartboard-text-muted);
    margin-left: auto;
}

.xhhaocom-chartboard-heatmap__legend-dot {
    width: var(--chartboard-heatmap-cell);
    height: var(--chartboard-heatmap-cell);
    border-radius: 3px;
    background: var(--chartboard-heatmap-cell-bg);
}

.xhhaocom-chartboard-heatmap__legend-dot[data-level="0"] {
    background: var(--chartboard-heatmap-cell-bg);
    border: 1px solid rgba(148, 163, 184, 0.35);
}

.xhhaocom-chartboard-heatmap__legend-dot[data-level="1"] {
    background: var(--chartboard-heatmap-level-1);
}

.xhhaocom-chartboard-heatmap__legend-dot[data-level="2"] {
    background: var(--chartboard-heatmap-level-2);
}

.xhhaocom-chartboard-heatmap__legend-dot[data-level="3"] {
    background: var(--chartboard-heatmap-level-3);
}

.xhhaocom-chartboard-heatmap__legend-dot[data-level="4"] {
    background: var(--chartboard-heatmap-level-4);
}

.xhhaocom-chartboard-heatmap__tooltip {
    position: absolute;
    top: 0;
    left: 0;
    transform: translate(-9999px, -9999px);
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: var(--chartboard-heatmap-tooltip-bg);
    border-radius: 10px;
    border: 1px solid var(--chartboard-heatmap-tooltip-border);
    box-shadow: var(--chartboard-heatmap-tooltip-shadow);
    padding: 8px 12px;
    font-size: 12px;
    color: var(--chartboard-heatmap-tooltip-text);
    pointer-events: none;
    z-index: 5;
}

.xhhaocom-chartboard-heatmap__tooltip strong {
    font-weight: 600;
    color: var(--chartboard-heatmap-tooltip-strong);
}

.xhhaocom-chartboard-heatmap__tooltip span {
    color: var(--chartboard-heatmap-tooltip-span);
}

@media (max-width: 768px) {
    .xhhaocom-chartboard {
        padding: 8px;
        gap: 16px;
    }

    .xhhaocom-chartboard-section__body {
        grid-template-columns: 1fr;
    }

    .xhhaocom-chartboard-card {
        min-height: 240px;
    }

    .xhhaocom-chartboard-card__canvas {
        min-height: 200px;
    }

    .xhhaocom-chartboard-heatmap__weekdays {
        font-size: 10px;
        padding-right: 4px;
    }
    
    .xhhaocom-chartboard-heatmap__months {
        font-size: 11px;
    }

    /* 移动端滚动条样式 */
    .xhhaocom-chartboard-section__body::-webkit-scrollbar {
        height: 8px;
    }

    .xhhaocom-chartboard-section__body::-webkit-scrollbar-track {
        background: rgba(0, 0, 0, 0.05);
        border-radius: 4px;
        margin: 0 16px;
    }

    .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.25);
        border-radius: 4px;
    }

    .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb:hover {
        background: rgba(0, 0, 0, 0.35);
    }
    
    html.dark:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-track,
    html[class~='dark']:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-track,
    html[class*='dark']:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-track,
    html[data-color-scheme='dark']:not([data-color-scheme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-track,
    html[data-theme='dark']:not([data-theme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-track,
    html[theme='dark']:not([theme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.05);
    }

    html.dark:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb,
    html[class~='dark']:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb,
    html[class*='dark']:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb,
    html[data-color-scheme='dark']:not([data-color-scheme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb,
    html[data-theme='dark']:not([data-theme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb,
    html[theme='dark']:not([theme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.2);
    }

    html.dark:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb:hover,
    html[class~='dark']:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb:hover,
    html[class*='dark']:not([data-color-scheme='light']):not(.light) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb:hover,
    html[data-color-scheme='dark']:not([data-color-scheme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb:hover,
    html[data-theme='dark']:not([data-theme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb:hover,
    html[theme='dark']:not([theme='light']) .xhhaocom-chartboard-section__body::-webkit-scrollbar-thumb:hover {
        background: rgba(255, 255, 255, 0.3);
    }
}

.xhhaocom-chartboard-legend {
    list-style: none;
    margin: 0;
    padding: 10px 0 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 6px 16px;
    font-size: 12px;
    color: var(--chartboard-legend-color);
}

.xhhaocom-chartboard-legend__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
    vertical-align: middle;
}

.xhhaocom-chartboard-legend__label {
    font-weight: 500;
    margin-right: 4px;
}

.xhhaocom-chartboard-legend__value {
    color: var(--chartboard-legend-value-color);
}