:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

nav {
    display: flex;
    gap: 0.5rem;
}

nav a {
    text-decoration: none;
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

nav a:hover {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

nav a.active {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    font-weight: 500;
}

main {
    flex: 1;
    padding: 2rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

section {
    margin-bottom: 3rem;
}

section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.selector-row {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.selector-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.selector-label {
    font-weight: 500;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.type-metadata {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 1rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.metadata-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.metadata-label {
    color: var(--text-muted);
    font-weight: 500;
}

.metadata-item span:not(.metadata-label) {
    color: var(--text-color);
    font-family: 'SF Mono', Consolas, monospace;
}

.tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--card-bg);
    padding: 0.25rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    width: fit-content;
}

.tab-btn {
    padding: 0.625rem 1.5rem;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-color);
}

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

.benchmark-selector {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.benchmark-selector label,
.control-group label {
    font-weight: 500;
    color: var(--text-muted);
}

.benchmark-selector select,
.details-controls select,
.timeline-controls select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background: var(--card-bg);
    font-size: 0.875rem;
    color: var(--text-color);
    cursor: pointer;
    min-width: 150px;
}

.benchmark-selector select:focus,
.details-controls select:focus,
.timeline-controls select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Metric Sections with Chart Rows */
.metric-section {
    margin-bottom: 2rem;
}

.metric-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
    border-left: 3px solid var(--primary-color);
}

.chart-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.chart-cell {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.chart-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 0.5rem;
}

/* Timeline Section */
.timeline-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.timeline-controls {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-muted);
}

.checkbox-label input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-label span {
    user-select: none;
}

.timeline-chart-wrapper {
    height: 400px;
    margin-bottom: 1rem;
}

/* Legacy chart containers */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-wrapper {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.chart-wrapper h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.chart-wrapper.full-width {
    grid-column: 1 / -1;
}

.legend-info {
    background: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 0.5rem;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 1rem;
}

/* Details page styles */
.details-controls {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.details-chart-container {
    margin-bottom: 2rem;
}

.details-table-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.details-table-container h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.table-scroll {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: var(--bg-color);
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

tbody tr:hover {
    background: var(--bg-color);
}

td {
    color: var(--text-color);
}

.number {
    font-family: 'SF Mono', Consolas, monospace;
    text-align: right;
}

.dev-badge {
    display: inline-block;
    background: var(--warning-color);
    color: white;
    font-size: 0.625rem;
    font-weight: 600;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    text-transform: uppercase;
    vertical-align: middle;
    margin-left: 0.375rem;
}

footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Loading state */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    color: var(--text-muted);
}

.loading::after {
    content: '';
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Error state */
.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 0.5rem;
    padding: 1rem;
    color: var(--error-color);
    text-align: center;
}

/* Responsive */
@media (max-width: 1024px) {
    .chart-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-row .chart-cell:last-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem;
    }

    main {
        padding: 1rem;
    }

    .chart-row {
        grid-template-columns: 1fr;
    }

    .chart-row .chart-cell:last-child {
        grid-column: auto;
    }

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

    .selector-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .selector-group {
        width: 100%;
    }

    .selector-group .tabs {
        flex: 1;
    }

    .tabs {
        width: 100%;
    }

    .tab-btn {
        flex: 1;
        text-align: center;
    }

    .timeline-controls,
    .details-controls {
        flex-direction: column;
        gap: 1rem;
    }

    .control-group {
        width: 100%;
    }

    .control-group select {
        flex: 1;
    }

    .timeline-chart-wrapper {
        height: 300px;
    }
}

/* Multi-select dropdown */
.multiselect {
    position: relative;
    display: inline-block;
}

.multiselect-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background: var(--card-bg);
    font-size: 0.875rem;
    color: var(--text-color);
    cursor: pointer;
    min-width: 150px;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.multiselect-btn::after {
    content: '';
    border: solid var(--text-muted);
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(45deg);
    margin-top: -2px;
}

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

.multiselect-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 100;
    min-width: 200px;
    margin-top: 0.25rem;
    max-height: 300px;
    overflow-y: auto;
}

.multiselect.open .multiselect-dropdown {
    display: block;
}

.multiselect-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: background 0.15s ease;
}

.multiselect-item:hover {
    background: var(--bg-color);
}

.multiselect-item input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.multiselect-item label {
    cursor: pointer;
    flex: 1;
    font-size: 0.875rem;
    color: var(--text-color);
}

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

/* Chart.js tooltip customization handled via JS */