// components/DemographicAnalysis.jsx - Complete Updated File

"use client";

import React, { useState, useMemo, useEffect, useRef } from "react";
import {
  BarChart,
  Bar,
  XAxis,
  YAxis,
  CartesianGrid,
  Tooltip as RechartsTooltip,
  Legend,
  ResponsiveContainer,
  Cell,
  LabelList,
} from "recharts";
import {
  getSignificanceIndicator,
  formatDisplayKey,
  getMetricTooltip,
} from "../lib/utils"; // Adjust path as needed
import { Tooltip } from "./Tooltip"; // Your custom Tooltip component

// Helper component for info tooltips with fixed positioning
const InfoTooltip = ({ text }) => {
  const [isVisible, setIsVisible] = useState(false);
  const [position, setPosition] = useState({ top: 0, left: 0 });
  const buttonRef = useRef(null);

  // Update position when tooltip becomes visible
  useEffect(() => {
    if (isVisible && buttonRef.current) {
      const rect = buttonRef.current.getBoundingClientRect();
      setPosition({
        top: rect.top - 10, // Position above the icon with a small gap
        left: rect.left + 12, // Center with the icon
      });
    }
  }, [isVisible]);

  return (
    <div className="relative inline-block ml-1 align-middle">
      <button
        ref={buttonRef}
        className="text-gray-400 hover:text-gray-600 focus:outline-none"
        onMouseEnter={() => setIsVisible(true)}
        onMouseLeave={() => setIsVisible(false)}
        onClick={(e) => {
          e.stopPropagation();
          setIsVisible(!isVisible);
        }}
        aria-label="Info"
      >
        <svg
          xmlns="http://www.w3.org/2000/svg"
          className="h-4 w-4"
          viewBox="0 0 20 20"
          fill="currentColor"
        >
          <path
            fillRule="evenodd"
            d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z"
            clipRule="evenodd"
          />
        </svg>
      </button>
      {isVisible && (
        <div
          className="fixed p-2 bg-white border-1 rounded shadow-xl text-xs text-gray-700 whitespace-pre-wrap"
          style={{
            top: `${position.top}px`,
            left: `${position.left}px`,
            zIndex: 9999,
            maxWidth: "250px",
            transform: "translate(-50%, -100%)",
          }}
        >
          {text}
        </div>
      )}
    </div>
  );
};

// Custom tooltip for DEMOGRAPHIC chart (shows scores per model for a level)
const CustomDemographicTooltip = ({ active, payload, label }) => {
  if (active && payload && payload.length) {
    const sortedPayload = [...payload].sort(
      (a, b) => (b.value || 0) - (a.value || 0)
    );
    return (
      <div className="bg-white p-3 border rounded shadow-lg max-w-xs">
        <p className="font-medium text-sm mb-1">{label}</p>
        {sortedPayload.map((entry, index) => (
          <div key={`item-${index}`} className="flex items-center mt-1">
            <div
              className="w-3 h-3 mr-2 rounded-full flex-shrink-0"
              style={{
                backgroundColor:
                  entry.payload[`${entry.dataKey}_color`] ||
                  entry.color ||
                  "#999",
              }}
            ></div>
            <span className="text-xs flex-grow pr-2">{entry.name}: </span>
            <span className="text-xs font-medium ml-1 whitespace-nowrap">
              {typeof entry.value === "number" ? entry.value.toFixed(1) : "N/A"}
            </span>
          </div>
        ))}
      </div>
    );
  }
  return null;
};

// Custom tooltip for EQUITY GAP chart - UPDATED
const EquityGapTooltip = ({ active, payload }) => {
  if (active && payload && payload.length > 0) {
    const data = payload[0].payload; // data here IS an item from equityGapChartData (derived from all_equity_gaps)

    if (!data || typeof data !== "object") return null;

    // Get significance indicator parts
    const significanceInfo = getSignificanceIndicator(
      data.is_statistically_significant,
      data.p_value
    );
    const ciLower = data.gap_confidence_interval_95_lower;
    const ciUpper = data.gap_confidence_interval_95_upper;

    return (
      <div className="bg-white p-3 border rounded shadow-lg text-xs max-w-xs">
        <p className="font-medium text-sm mb-2">{data.model}</p>
        <div className="space-y-1">
          <div className="flex justify-between">
            <span className="font-semibold">Equity Gap:</span>
            {/* 'gap' key is used in chart data */}
            <span>{data.gap?.toFixed(1) ?? "N/A"} pts</span>
          </div>
          {data.effect_size !== undefined && data.effect_size !== null && (
            <div className="flex justify-between">
              <span className="font-semibold">Effect Size:</span>
              <span>
                {data.effect_size?.toFixed(2) ?? "N/A"} (
                {data.effect_size_class || "N/A"})
              </span>
            </div>
          )}
          {/* Show Significance */}
          <div className="flex justify-between items-center">
            <span className="font-semibold">Significance:</span>
            <span className={`flex items-center ${significanceInfo.className}`}>
              {significanceInfo.tooltip.replace(/Statistically /g, "")}{" "}
              {/* Shorten text */}
              <span className="ml-1 font-bold">{significanceInfo.symbol}</span>
            </span>
          </div>
          {/* Show Confidence Interval */}
          <div className="flex justify-between">
            <span className="font-semibold">95% CI:</span>
            <span>
              {typeof ciLower === "number" && typeof ciUpper === "number"
                ? `[${ciLower.toFixed(1)}, ${ciUpper.toFixed(1)}]`
                : "N/A"}
            </span>
          </div>
          {/* Show Concern Flag */}
          {data.is_equity_concern !== undefined && (
            <div className="flex justify-between">
              <span className="font-semibold">Concern Flag:</span>
              <span
                className={
                  data.is_equity_concern
                    ? "font-bold text-red-600"
                    : "text-gray-600"
                }
              >
                {data.is_equity_concern ? "Yes" : "No"}
              </span>
            </div>
          )}
          {/* Show Min/Max Groups */}
          <div className="flex justify-between">
            <span className="font-semibold">Lowest Group:</span>
            <span>
              {data.min_level || "N/A"} ({data.min_score?.toFixed(1) ?? "-"})
            </span>
          </div>
          <div className="flex justify-between">
            <span className="font-semibold">Highest Group:</span>
            <span>
              {data.max_level || "N/A"} ({data.max_score?.toFixed(1) ?? "-"})
            </span>
          </div>
        </div>
      </div>
    );
  }
  return null;
};

// New helper functions for styling consistency

// New helper function to get badge color for effect size
const getEffectSizeBadgeStyle = (effectSizeClass) => {
  switch (effectSizeClass) {
    case "Large":
      return "bg-red-100 text-red-800";
    case "Medium":
      return "bg-yellow-100 text-yellow-800";
    case "Small":
      return "bg-blue-100 text-blue-800";
    case "Negligible":
      return "bg-green-100 text-green-800";
    default:
      return "bg-gray-100 text-gray-800";
  }
};

// New helper function to get badge color for significance
const getSignificanceBadgeStyle = (isSignificant) => {
  if (isSignificant === null || isSignificant === undefined)
    return "bg-gray-100 text-gray-800";
  return isSignificant
    ? "bg-blue-100 text-blue-800"
    : "bg-gray-100 text-gray-600";
};

// New helper function to get badge color for concern
const getConcernBadgeStyle = (isConcern) => {
  if (isConcern === null || isConcern === undefined)
    return "bg-gray-100 text-gray-800";
  return isConcern ? "bg-red-100 text-red-800" : "bg-green-100 text-green-800";
};

// New helper function to format p-value
const formatPValue = (pValue) => {
  if (pValue === null || pValue === undefined) return "N/A";
  return `p=${pValue.toFixed(3)}` + (pValue < 0.05 ? " < 0.05" : " ≥ 0.05");
};

// New helper function to create effect size tooltip content
const getEffectSizeTooltip = (effectSize) => {
  return `Effect Size: ${effectSize.toFixed(2)}

Calculation: Normalized Effect Size = (Max Score - Min Score) / Category Standard Deviation

Category Standard Deviation: The standard deviation of all demographic scores within this specific category.

Thresholds:
• ≥ 0.8: "Large"
• ≥ 0.5 and < 0.8: "Medium"
• ≥ 0.2 and < 0.5: "Small"
• < 0.2: "Negligible"`;
};

// Main component
const DemographicAnalysis = ({
  rawData = { demographicOptions: {}, mrpDemographics: {} }, // Expect camelCase keys here, snake_case inside mrpDemographics
  modelsMeta = [], // Expect camelCase keys
  metricsData = { highLevelCategories: {}, lowLevelMetrics: {} }, // Expect Title Case keys, contains internalMetricKey
  equityAnalysis = { all_equity_gaps: [], universal_issues: [] }, // Expect snake_case keys
}) => {
  // Use Title Case metric keys for state and dropdowns
  const highLevelMetricDisplayKeys = Object.keys(
    metricsData?.highLevelCategories || {}
  ).sort();
  const lowLevelMetricDisplayKeys = Object.keys(
    metricsData?.lowLevelMetrics || {}
  ).sort();

  const [selectedDemographicFactor, setSelectedDemographicFactor] =
    useState(null);
  const [selectedMetricDisplayKey, setSelectedMetricDisplayKey] =
    useState(null); // State holds Title Case
  const [metricLevel, setMetricLevel] = useState("high");

  const currentMetricDisplayKeys = useMemo(
    () =>
      metricLevel === "high"
        ? highLevelMetricDisplayKeys
        : lowLevelMetricDisplayKeys,
    [metricLevel, highLevelMetricDisplayKeys, lowLevelMetricDisplayKeys]
  );

  const getModelColor = (modelName) =>
    modelsMeta.find((m) => m.model === modelName)?.color || "#999999";

  // Set default factor
  useEffect(() => {
    const factors = Object.keys(rawData.demographicOptions || {});
    if (!selectedDemographicFactor && factors.length > 0) {
      const defaultFactor = factors.includes("Age") ? "Age" : factors.sort()[0];
      setSelectedDemographicFactor(defaultFactor);
    }
  }, [rawData.demographicOptions, selectedDemographicFactor]);

  // Set default metric when list available
  useEffect(() => {
    if (!selectedMetricDisplayKey && currentMetricDisplayKeys.length > 0) {
      // Default logic might need adjustment if "Overall" isn't a key
      const defaultMetric = currentMetricDisplayKeys.includes("Overall Score")
        ? "Overall Score"
        : currentMetricDisplayKeys[0];
      setSelectedMetricDisplayKey(defaultMetric);
    } else if (
      selectedMetricDisplayKey &&
      !currentMetricDisplayKeys.includes(selectedMetricDisplayKey)
    ) {
      setSelectedMetricDisplayKey(
        currentMetricDisplayKeys.length > 0 ? currentMetricDisplayKeys[0] : null
      );
    }
  }, [currentMetricDisplayKeys, selectedMetricDisplayKey, metricLevel]);

  // Get the internal snake_case key for filtering equity gaps
  const internalMetricKey = useMemo(() => {
    if (!selectedMetricDisplayKey) return null;
    const allMetrics = {
      ...(metricsData?.highLevelCategories || {}),
      ...(metricsData?.lowLevelMetrics || {}),
    };
    // Look up using Title Case display key
    return allMetrics[selectedMetricDisplayKey]?.internalMetricKey ?? null;
  }, [selectedMetricDisplayKey, metricsData]);

  // Filter equity gaps based on internal key and factor
  const filteredEquityGaps = useMemo(() => {
    // Use internalMetricKey (snake_case) and selectedDemographicFactor
    if (
      !internalMetricKey ||
      !selectedDemographicFactor ||
      !equityAnalysis?.all_equity_gaps ||
      !Array.isArray(equityAnalysis.all_equity_gaps)
    ) {
      return [];
    }
    // Filter all_equity_gaps (which has snake_case keys)
    return equityAnalysis.all_equity_gaps.filter(
      (gap) =>
        gap.category === internalMetricKey &&
        gap.demographic_factor === selectedDemographicFactor
    );
  }, [
    internalMetricKey,
    selectedDemographicFactor,
    equityAnalysis?.all_equity_gaps,
  ]);

  // Prepare data for Equity Gap Chart - uses snake_case keys from filteredEquityGaps
  const equityGapChartData = useMemo(() => {
    return filteredEquityGaps
      .map((gap) => ({
        // Pass all original snake_case keys needed by tooltip/table
        // These keys match the fields expected by EquityGapTooltip
        model: gap.model,
        gap: gap.score_range ?? 0, // Rename score_range to gap for chart dataKey
        score_range: gap.score_range,
        effect_size: gap.effect_size,
        effect_size_class: gap.effect_size_class,
        is_statistically_significant: gap.is_statistically_significant,
        p_value: gap.p_value,
        gap_confidence_interval_95_lower: gap.gap_confidence_interval_95_lower,
        gap_confidence_interval_95_upper: gap.gap_confidence_interval_95_upper,
        is_equity_concern: gap.is_equity_concern,
        min_level: gap.min_level,
        min_score: gap.min_score,
        max_level: gap.max_level,
        max_score: gap.max_score,

        // Add derived properties
        color: getModelColor(gap.model),
      }))
      .sort((a, b) => (a.gap ?? 0) - (b.gap ?? 0)) // Sort by gap size ascending
      .map((item, index) => ({ ...item, rank: index + 1 })); // Add rank based on gap size
  }, [filteredEquityGaps]); // Depend only on filteredEquityGaps

  // Prepare data for Demographic Breakdown Chart
  const demographicChartData = useMemo(() => {
    // selectedMetricDisplayKey is Title Case, matching keys in mrpDemographics
    if (
      !selectedDemographicFactor ||
      !selectedMetricDisplayKey ||
      !rawData.mrpDemographics
    )
      return [];
    const metricKeyInData = selectedMetricDisplayKey; // Use Title Case key
    const levels = rawData.demographicOptions[selectedDemographicFactor] || [];
    if (levels.length === 0) return [];

    const chartData = levels.map((level) => {
      const entry = { level };
      modelsMeta.forEach((model) => {
        // Access mrpDemographics using Title Case metric key
        const score =
          rawData.mrpDemographics[model.model]?.[selectedDemographicFactor]?.[
            level
          ]?.[metricKeyInData];
        entry[model.model] =
          score !== undefined && score !== null && score !== "N/A"
            ? parseFloat(score)
            : null;
        entry[`${model.model}_color`] = model.color;
      });
      return entry;
    });
    return chartData.sort((a, b) => {
      if (a.level === "N/A") return 1;
      if (b.level === "N/A") return -1;
      return a.level.localeCompare(b.level);
    });
  }, [
    selectedDemographicFactor,
    selectedMetricDisplayKey,
    rawData.mrpDemographics,
    rawData.demographicOptions,
    modelsMeta,
  ]);

  const modelsWithDemoData = useMemo(
    () =>
      modelsMeta
        .map((m) => m.model)
        .filter((modelName) =>
          demographicChartData.some(
            (d) => d[modelName] !== null && d[modelName] !== undefined
          )
        ),
    [modelsMeta, demographicChartData]
  );

  return (
    <div>
      {/* Controls Panel */}
      <div className="border rounded-lg overflow-hidden mb-6 shadow-sm">
        <div className="px-4 py-3 bg-gray-50 border-b">
          <h3 className="font-semibold text-gray-800">
            Demographic Analysis Controls
          </h3>
        </div>
        <div className="p-4 grid grid-cols-1 md:grid-cols-3 gap-4">
          {/* Factor Selector */}
          <div>
            <label
              htmlFor="factorSelect"
              className="block text-sm font-medium text-gray-700 mb-1"
            >
              Demographic Factor
            </label>
            <select
              id="factorSelect"
              className="w-full border rounded-md px-3 py-2 bg-white shadow-sm focus:outline-none focus:ring-2 focus:ring-blue-500"
              value={selectedDemographicFactor || ""}
              onChange={(e) => setSelectedDemographicFactor(e.target.value)}
            >
              <option value="" disabled>
                Select factor
              </option>
              {Object.keys(rawData.demographicOptions || {})
                .sort()
                .map((factor) => (
                  <option key={factor} value={factor}>
                    {formatDisplayKey(factor)}
                  </option>
                ))}
            </select>
          </div>
          {/* Level Toggle */}
          <div>
            <label className="block text-sm font-medium text-gray-700 mb-1">
              Metric Level
            </label>
            <div className="flex">
              <button
                className={`px-3 py-2 text-sm font-medium border ${
                  metricLevel === "high"
                    ? "bg-blue-100 text-blue-800 border-blue-300"
                    : "bg-white text-gray-700 border-gray-300 hover:bg-gray-50"
                } rounded-l-md flex-1`}
                onClick={() => setMetricLevel("high")}
              >
                High-Level
              </button>
              <button
                className={`px-3 py-2 text-sm font-medium border-t border-b border-r ${
                  metricLevel === "low"
                    ? "bg-blue-100 text-blue-800 border-blue-300"
                    : "bg-white text-gray-700 border-gray-300 hover:bg-gray-50"
                } rounded-r-md flex-1`}
                onClick={() => setMetricLevel("low")}
              >
                Low-Level
              </button>
            </div>
          </div>
          {/* Metric Selector - Uses Title Case keys */}
          <div>
            <label
              htmlFor="metricSelect"
              className="block text-sm font-medium text-gray-700 mb-1"
            >
              <Tooltip content={getMetricTooltip(selectedMetricDisplayKey)}>
                <span>
                  {metricLevel === "high"
                    ? "High-Level Category"
                    : "Low-Level Metric"}
                </span>
              </Tooltip>
            </label>
            <select
              id="metricSelect"
              className="w-full border rounded-md px-3 py-2 bg-white shadow-sm focus:outline-none focus:ring-2 focus:ring-blue-500"
              value={selectedMetricDisplayKey || ""}
              onChange={(e) => setSelectedMetricDisplayKey(e.target.value)}
              disabled={currentMetricDisplayKeys.length === 0}
            >
              <option value="" disabled>
                Select metric
              </option>
              {/* Iterate through Title Case keys */}
              {currentMetricDisplayKeys.map((displayKey) => (
                <option key={displayKey} value={displayKey}>
                  {displayKey}
                </option>
              ))}
            </select>
            {!selectedMetricDisplayKey &&
              currentMetricDisplayKeys.length > 0 && (
                <p className="mt-1 text-xs text-gray-500">
                  Select a metric to view analysis.
                </p>
              )}
            {currentMetricDisplayKeys.length === 0 && (
              <p className="mt-1 text-xs text-amber-600">
                No {metricLevel} metrics available.
              </p>
            )}
          </div>
        </div>
      </div>

      {/* Demographic Breakdown Chart */}
      <div className="border rounded-lg overflow-hidden mb-6 shadow-sm">
        <div className="px-4 py-3 bg-gray-50 border-b">
          <h3 className="font-semibold text-gray-800">
            {selectedMetricDisplayKey || "Metric"} Scores across{" "}
            {formatDisplayKey(selectedDemographicFactor) || "Groups"}
            <InfoTooltip
              text={`Shows the average score (0-100) for each model within each subgroup of ${formatDisplayKey(
                selectedDemographicFactor
              )}. Higher scores are better.`}
            />
          </h3>
        </div>
        <div className="p-4">
          {demographicChartData.length > 0 && modelsWithDemoData.length > 0 ? (
            <div className="h-80">
              <ResponsiveContainer width="100%" height="100%">
                <BarChart
                  data={demographicChartData}
                  margin={{ top: 5, right: 5, left: 0, bottom: 60 }}
                >
                  <CartesianGrid strokeDasharray="3 3" vertical={false} />
                  <XAxis
                    dataKey="level"
                    angle={-45}
                    textAnchor="end"
                    tick={{ fontSize: 11 }}
                    interval={0}
                    height={70}
                  />
                  <YAxis domain={[0, 100]} tick={{ fontSize: 11 }} width={40} />
                  <RechartsTooltip
                    content={<CustomDemographicTooltip />}
                    wrapperStyle={{ zIndex: 10 }}
                  />
                  <Legend
                    layout="horizontal"
                    verticalAlign="bottom"
                    align="center"
                    wrapperStyle={{ paddingTop: 30 }}
                    iconSize={10}
                  />
                  {modelsWithDemoData.map((modelName) => (
                    <Bar
                      key={modelName}
                      dataKey={modelName}
                      name={modelName}
                      fill={getModelColor(modelName)}
                    />
                  ))}
                </BarChart>
              </ResponsiveContainer>
            </div>
          ) : (
            <div className="flex items-center justify-center h-60 bg-gray-50 rounded">
              <div className="text-center p-4">
                <svg
                  xmlns="http://www.w3.org/2000/svg"
                  className="h-10 w-10 mx-auto text-gray-400 mb-3"
                  fill="none"
                  viewBox="0 0 24 24"
                  stroke="currentColor"
                >
                  <path
                    strokeLinecap="round"
                    strokeLinejoin="round"
                    strokeWidth={2}
                    d="M9 17v-2m3 2v-4m3 4v-6m2 10H7a2 2 0 01-2-2V7a2 2 0 012-2h2l2-3h6l2 3h2a2 2 0 012 2v10a2 2 0 01-2 2h-1"
                  />
                </svg>
                <h3 className="text-lg font-medium text-gray-900 mb-1">
                  No Data Available
                </h3>
                <p className="text-sm text-gray-600">
                  {!selectedDemographicFactor
                    ? "Please select a demographic factor."
                    : !selectedMetricDisplayKey
                    ? "Please select a metric."
                    : "No score data found."}
                </p>
              </div>
            </div>
          )}
        </div>
      </div>

      {/* Equity Gap Comparison Chart */}
      <div className="border rounded-lg overflow-hidden mb-6 shadow-sm">
        <div className="px-4 py-3 bg-gray-50 border-b">
          <h3 className="font-semibold text-gray-800">
            Equity Gap Comparison for {selectedMetricDisplayKey || "Metric"}
            <InfoTooltip
              text={`Compares the maximum score difference observed between ${formatDisplayKey(
                selectedDemographicFactor
              )} groups for each model. Lower gaps indicate better equity.`}
            />
          </h3>
        </div>
        <div className="p-4">
          {equityGapChartData.length > 0 ? (
            <div className="h-72">
              <ResponsiveContainer width="100%" height="100%">
                <BarChart
                  data={equityGapChartData}
                  margin={{ top: 5, right: 30, left: 5, bottom: 5 }}
                  layout="vertical"
                >
                  <CartesianGrid
                    strokeDasharray="3 3"
                    horizontal={true}
                    vertical={false}
                  />
                  <XAxis
                    type="number"
                    dataKey="gap"
                    domain={[0, "auto"]}
                    tick={{ fontSize: 11 }}
                    allowDecimals={false}
                  />
                  <YAxis
                    dataKey="model"
                    type="category"
                    width={130}
                    tick={{ fontSize: 11 }}
                  />
                  <RechartsTooltip
                    content={<EquityGapTooltip />}
                    wrapperStyle={{ zIndex: 10 }}
                  />
                  <Bar
                    dataKey="gap"
                    name="Equity Gap"
                    barSize={20}
                    radius={[0, 4, 4, 0]}
                  >
                    {equityGapChartData.map((entry, index) => (
                      <Cell
                        key={`cell-${index}`}
                        fill={entry.color}
                        fillOpacity={0.8}
                      />
                    ))}
                    <LabelList
                      dataKey="gap"
                      position="right"
                      formatter={(value) => value?.toFixed(1) ?? ""}
                      style={{ fontSize: 11, fill: "#6b7280" }}
                    />
                  </Bar>
                </BarChart>
              </ResponsiveContainer>
            </div>
          ) : (
            <div className="flex items-center justify-center h-60 bg-gray-50 rounded">
              <div className="text-center p-4">
                <svg
                  xmlns="http://www.w3.org/2000/svg"
                  className="h-10 w-10 mx-auto text-gray-400 mb-3"
                  fill="none"
                  viewBox="0 0 24 24"
                  stroke="currentColor"
                >
                  <path
                    strokeLinecap="round"
                    strokeLinejoin="round"
                    strokeWidth={2}
                    d="M9 17v-2m3 2v-4m3 4v-6m2 10H7a2 2 0 01-2-2V7a2 2 0 012-2h2l2-3h6l2 3h2a2 2 0 012 2v10a2 2 0 01-2 2h-1"
                  />
                </svg>
                <h3 className="text-lg font-medium text-gray-900 mb-1">
                  No Equity Gap Data
                </h3>
                <p className="text-sm text-gray-600">
                  {!selectedDemographicFactor
                    ? "Select factor."
                    : !selectedMetricDisplayKey
                    ? "Select metric."
                    : "No equity gaps found."}
                </p>
              </div>
            </div>
          )}
          {equityGapChartData.length > 0 && (
            <p className="mt-3 text-xs text-gray-500">
              Chart ranks models by equity gap size (lower is better).
            </p>
          )}
        </div>
      </div>

      {/* Equity Gap Details Table - IMPROVED */}
      {equityGapChartData.length > 0 && (
        <div className="border rounded-lg overflow-hidden mb-6 shadow-sm">
          <div className="px-4 py-3 bg-gray-50 border-b">
            <h3 className="font-semibold text-gray-800">
              Detailed Equity Gaps: {selectedMetricDisplayKey || "Metric"} by{" "}
              {formatDisplayKey(selectedDemographicFactor) || "Factor"}
            </h3>
          </div>
          <div className="p-4 overflow-x-auto">
            <table className="min-w-full divide-y divide-gray-200">
              <thead className="bg-gray-50">
                <tr>
                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Rank
                  </th>
                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Model
                  </th>
                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Equity Gap
                  </th>
                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Effect Size
                  </th>
                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Significance
                  </th>
                  <th className="px-3 py-2 text-center text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Concern?
                  </th>
                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Lowest Group (Score)
                  </th>
                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                    Highest Group (Score)
                  </th>
                </tr>
              </thead>
              <tbody className="bg-white divide-y divide-gray-200">
                {equityGapChartData.map((gap) => {
                  const minScoreDisplay =
                    typeof gap.min_score === "number"
                      ? gap.min_score.toFixed(1)
                      : "-";
                  const maxScoreDisplay =
                    typeof gap.max_score === "number"
                      ? gap.max_score.toFixed(1)
                      : "-";

                  return (
                    <tr
                      key={gap.model}
                      className={`hover:bg-gray-50 ${
                        gap.is_equity_concern ? "bg-red-50" : ""
                      }`}
                    >
                      <td className="px-3 py-2 whitespace-nowrap text-sm text-gray-500">
                        {gap.rank}
                      </td>
                      <td className="px-3 py-2 whitespace-nowrap">
                        <div className="flex items-center">
                          <div
                            className="w-3 h-3 rounded-full mr-2 flex-shrink-0"
                            style={{ backgroundColor: gap.color }}
                          ></div>
                          <span className="text-sm font-medium text-gray-900">
                            {gap.model}
                          </span>
                        </div>
                      </td>
                      <td className="px-3 py-2 whitespace-nowrap text-sm font-medium">
                        {/* Equity Gap as plain text */}
                        {gap.gap !== undefined && gap.gap !== null
                          ? gap.gap.toFixed(1)
                          : "N/A"}
                      </td>
                      <td className="px-3 py-2 whitespace-nowrap text-sm">
                        {gap.effect_size !== undefined &&
                        gap.effect_size !== null ? (
                          <div className="flex items-center">
                            <span
                              className={`px-2 py-0.5 rounded-full text-xs font-medium ${getEffectSizeBadgeStyle(
                                gap.effect_size_class
                              )}`}
                            >
                              {gap.effect_size_class || "N/A"}
                            </span>
                            <InfoTooltip
                              text={getEffectSizeTooltip(gap.effect_size)}
                            />
                          </div>
                        ) : (
                          <span className="text-gray-500">N/A</span>
                        )}
                      </td>
                      <td className="px-3 py-2 whitespace-nowrap text-sm">
                        <div className="flex flex-col">
                          <div className="flex items-center">
                            <span
                              className={`px-2 py-0.5 rounded-full text-xs font-medium ${getSignificanceBadgeStyle(
                                gap.is_statistically_significant
                              )}`}
                            >
                              {gap.is_statistically_significant ? (
                                <span>Significant ✔</span>
                              ) : (
                                <span>Not Significant ✘</span>
                              )}
                            </span>
                          </div>
                          <div className="text-xs text-gray-500 mt-1">
                            {gap.p_value !== undefined && gap.p_value !== null
                              ? formatPValue(gap.p_value)
                              : ""}
                          </div>
                        </div>
                      </td>
                      <td className="px-3 py-2 whitespace-nowrap text-sm text-center">
                        <span
                          className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${getConcernBadgeStyle(
                            gap.is_equity_concern
                          )}`}
                        >
                          {gap.is_equity_concern ? "Yes" : "No"}
                        </span>
                      </td>
                      <td className="px-3 py-2 whitespace-nowrap text-sm">
                        {gap.min_level ? (
                          <div className="flex flex-col">
                            <span className="font-medium">{gap.min_level}</span>
                            <span className="text-gray-500">
                              {minScoreDisplay}
                            </span>
                          </div>
                        ) : (
                          <span className="text-gray-500">-</span>
                        )}
                      </td>
                      <td className="px-3 py-2 whitespace-nowrap text-sm">
                        {gap.max_level ? (
                          <div className="flex flex-col">
                            <span className="font-medium">{gap.max_level}</span>
                            <span className="text-gray-500">
                              {maxScoreDisplay}
                            </span>
                          </div>
                        ) : (
                          <span className="text-gray-500">-</span>
                        )}
                      </td>
                    </tr>
                  );
                })}
              </tbody>
            </table>
          </div>
          {/* Table Footer/Explanation - IMPROVED */}
          <div className="px-4 pb-4 pt-2 text-xs text-gray-600">
            <div className="space-y-1">
              <p>
                <span className="font-semibold">Rank:</span> Based on lowest
                Equity Gap value for this metric/factor
              </p>
              <p>
                <span className="font-semibold">Equity Gap:</span> Score
                difference (0-100 points) between highest and lowest scoring
                groups
              </p>
              <p>
                <span className="font-semibold">Effect Size:</span> Gap
                magnitude relative to score variation (hover for details)
              </p>
              <p>
                <span className="font-semibold">Significance:</span>Whether the
                gap is statistically significant after adjusting for multiple
                tests (Benjamini-Hochberg FDR correction, q&lt;0.05)
              </p>
              <p>
                <span className="font-semibold">Concern?:</span> 'Yes' flags
                potential equity concerns (Large Effect Size AND Statistically
                Significant)
              </p>
            </div>
          </div>
        </div>
      )}
    </div>
  );
};

export default DemographicAnalysis;