feat: add recharts analytics to admin campaign stats page

- Move shared chart components (DailyChart, PeriodComparison, StatCard) to src/components/stats/ with configurable label props
- Create shared types for chart data decoupled from partner API
- Add campaign chart data API client with deposits/spending split
- Enhance AdminCampaignStats with daily trends chart, period comparison, top registrations, and deposit/spending stat cards
- Add useChartColors hook with SSR guard and theme-aware CSS variable parsing
- Add cross-platform clipboard utility with execCommand fallback for Telegram WebView
- Add i18n keys for chart analytics across all 4 locales (en, ru, zh, fa)
- Responsive fixes: truncation for long names/values, responsive text sizing, touch-friendly copy buttons

src/components/partner/CampaignCard.tsx

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+import { useCallback, useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+
+import type { PartnerCampaignInfo } from '../../api/partners';
+import { PARTNER_STATS } from '../../constants/partner';
+import { useCurrency } from '../../hooks/useCurrency';
+import { useHaptic } from '../../platform';
+import { copyToClipboard } from '../../utils/clipboard';
+import { CampaignDetailStats } from './CampaignDetailStats';
+import { StatCard } from '../stats/StatCard';
+
+const CopyIcon = () => (
+  <svg className="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.5}>
+    <path
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      d="M15.666 3.888A2.25 2.25 0 0013.5 2.25h-3c-1.03 0-1.9.693-2.166 1.638m7.332 0c.055.194.084.4.084.612v0a.75.75 0 01-.75.75H9a.75.75 0 01-.75-.75v0c0-.212.03-.418.084-.612m7.332 0c.646.049 1.288.11 1.927.184 1.1.128 1.907 1.077 1.907 2.185V19.5a2.25 2.25 0 01-2.25 2.25H6.75A2.25 2.25 0 014.5 19.5V6.257c0-1.108.806-2.057 1.907-2.185a48.208 48.208 0 011.927-.184"
+    />
+  </svg>
+);
+
+const CheckIcon = () => (
+  <svg className="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
+    <path strokeLinecap="round" strokeLinejoin="round" d="M4.5 12.75l6 6 9-13.5" />
+  </svg>
+);
+
+const ChevronIcon = ({ expanded }: { expanded: boolean }) => (
+  <svg
+    className={`h-5 w-5 transition-transform ${expanded ? 'rotate-180' : ''}`}
+    fill="none"
+    viewBox="0 0 24 24"
+    stroke="currentColor"
+    strokeWidth={1.5}
+  >
+    <path strokeLinecap="round" strokeLinejoin="round" d="M19.5 8.25l-7.5 7.5-7.5-7.5" />
+  </svg>
+);
+
+interface CampaignCardProps {
+  campaign: PartnerCampaignInfo;
+}
+
+export function CampaignCard({ campaign }: CampaignCardProps) {
+  const { t } = useTranslation();
+  const { formatWithCurrency, formatPositive } = useCurrency();
+  const haptic = useHaptic();
+  const [expanded, setExpanded] = useState(false);
+  const [copiedLink, setCopiedLink] = useState<string | null>(null);
+  const copyTimerRef = useRef<ReturnType<typeof setTimeout>>(undefined);
+
+  useEffect(() => () => clearTimeout(copyTimerRef.current), []);
+
+  const handleCopy = useCallback(
+    async (url: string, key: string) => {
+      try {
+        await copyToClipboard(url);
+        haptic.notification('success');
+      } catch {
+        haptic.notification('error');
+      }
+      setCopiedLink(key);
+      clearTimeout(copyTimerRef.current);
+      copyTimerRef.current = setTimeout(() => setCopiedLink(null), PARTNER_STATS.COPY_FEEDBACK_MS);
+    },
+    [haptic],
+  );
+
+  const handleToggleExpand = useCallback(() => {
+    haptic.impact('light');
+    setExpanded((prev) => !prev);
+  }, [haptic]);
+
+  const botKey = `${campaign.id}-bot`;
+  const webKey = `${campaign.id}-web`;
+
+  return (
+    <div className="bento-card space-y-4">
+      {/* Campaign header */}
+      <div className="flex items-center justify-between gap-2">
+        <h3 className="min-w-0 truncate text-base font-semibold text-dark-100">{campaign.name}</h3>
+        <button
+          onClick={handleToggleExpand}
+          aria-expanded={expanded}
+          aria-controls={`campaign-detail-${campaign.id}`}
+          className="flex shrink-0 items-center gap-1 text-sm text-accent-400 transition-colors hover:text-accent-300"
+        >
+          <span>
+            {expanded
+              ? t('referral.partner.stats.hideDetails')
+              : t('referral.partner.stats.showDetails')}
+          </span>
+          <ChevronIcon expanded={expanded} />
+        </button>
+      </div>
+
+      {/* Basic stats -- always visible */}
+      <div className="grid grid-cols-2 gap-2 sm:grid-cols-3">
+        <StatCard
+          label={t('referral.partner.stats.registrations')}
+          value={campaign.registrations_count}
+        />
+        <StatCard
+          label={t('referral.partner.stats.referrals')}
+          value={campaign.referrals_count}
+          valueClassName="text-accent-400"
+        />
+        <StatCard
+          label={t('referral.partner.stats.earnings')}
+          value={formatPositive(campaign.earnings_kopeks / PARTNER_STATS.KOPEKS_DIVISOR)}
+          valueClassName="text-success-400"
+        />
+      </div>
+
+      {/* Bonus info */}
+      {campaign.bonus_type !== 'none' && (
+        <div className="rounded-lg bg-success-500/10 p-3">
+          <div className="mb-1 text-xs font-medium text-success-500">
+            {t('referral.partner.campaignBonus.title')}
+          </div>
+          <div className="text-sm font-semibold text-success-400">
+            {campaign.bonus_type === 'balance' &&
+              t('referral.partner.campaignBonus.balanceDesc', {
+                amount: formatWithCurrency(
+                  campaign.balance_bonus_kopeks / PARTNER_STATS.KOPEKS_DIVISOR,
+                  0,
+                ),
+              })}
+            {campaign.bonus_type === 'subscription' &&
+              t('referral.partner.campaignBonus.subscriptionDesc', {
+                days: campaign.subscription_duration_days ?? 0,
+                ...(campaign.subscription_traffic_gb
+                  ? { traffic: campaign.subscription_traffic_gb }
+                  : {}),
+              })}
+            {campaign.bonus_type === 'tariff' && t('referral.partner.campaignBonus.tariffDesc')}
+          </div>
+        </div>
+      )}
+
+      {/* Bot link */}
+      {campaign.deep_link && (
+        <div>
+          <div className="mb-1 text-xs font-medium text-dark-500">
+            {t('referral.partner.campaignLinks.bot')}
+          </div>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              readOnly
+              value={campaign.deep_link}
+              className="input flex-1 text-xs"
+            />
+            <button
+              onClick={() => handleCopy(campaign.deep_link!, botKey)}
+              className={`btn-primary shrink-0 px-3 py-2.5 ${
+                copiedLink === botKey ? 'bg-success-500 hover:bg-success-500' : ''
+              }`}
+            >
+              {copiedLink === botKey ? <CheckIcon /> : <CopyIcon />}
+            </button>
+          </div>
+        </div>
+      )}
+
+      {/* Web link */}
+      {campaign.web_link && (
+        <div>
+          <div className="mb-1 text-xs font-medium text-dark-500">
+            {t('referral.partner.campaignLinks.web')}
+          </div>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              readOnly
+              value={campaign.web_link}
+              className="input flex-1 text-xs"
+            />
+            <button
+              onClick={() => handleCopy(campaign.web_link!, webKey)}
+              className={`btn-primary shrink-0 px-3 py-2.5 ${
+                copiedLink === webKey ? 'bg-success-500 hover:bg-success-500' : ''
+              }`}
+            >
+              {copiedLink === webKey ? <CheckIcon /> : <CopyIcon />}
+            </button>
+          </div>
+        </div>
+      )}
+
+      {/* Expanded detail stats */}
+      <div id={`campaign-detail-${campaign.id}`}>
+        {expanded && <CampaignDetailStats campaignId={campaign.id} />}
+      </div>
+    </div>
+  );
+}

src/components/partner/CampaignDetailStats.tsx

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+import { useQuery } from '@tanstack/react-query';
+import { useTranslation } from 'react-i18next';
+
+import { partnerApi } from '../../api/partners';
+import { PARTNER_STATS } from '../../constants/partner';
+import { useCurrency } from '../../hooks/useCurrency';
+import { DailyChart } from '../stats/DailyChart';
+import { PeriodComparison } from '../stats/PeriodComparison';
+import { StatCard } from '../stats/StatCard';
+import { TopReferrals } from './TopReferrals';
+
+interface CampaignDetailStatsProps {
+  campaignId: number;
+}
+
+export function CampaignDetailStats({ campaignId }: CampaignDetailStatsProps) {
+  const { t } = useTranslation();
+  const { formatWithCurrency } = useCurrency();
+
+  const { data, isLoading, isError, refetch } = useQuery({
+    queryKey: ['partner-campaign-stats', campaignId],
+    queryFn: () => partnerApi.getCampaignStats(campaignId),
+    staleTime: PARTNER_STATS.STATS_STALE_TIME,
+  });
+
+  if (isLoading) {
+    return (
+      <div className="space-y-3 pt-2">
+        {/* Skeleton loader */}
+        <div className="grid grid-cols-2 gap-2 sm:grid-cols-3">
+          {Array.from({ length: PARTNER_STATS.SKELETON_COUNT }).map((_, i) => (
+            <div key={i} className="h-16 animate-pulse rounded-xl bg-dark-800/30" />
+          ))}
+        </div>
+        <div className="h-52 animate-pulse rounded-xl bg-dark-800/30" />
+      </div>
+    );
+  }
+
+  if (isError || !data) {
+    return (
+      <div className="pt-2 text-center">
+        <div className="text-sm text-error-400">{t('referral.partner.stats.noData')}</div>
+        <button onClick={() => refetch()} className="btn-secondary mt-2 px-4 py-1 text-xs">
+          {t('common.retry')}
+        </button>
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-3 pt-2">
+      {/* Period earnings */}
+      <div className="grid grid-cols-2 gap-2 sm:grid-cols-3">
+        <StatCard
+          label={t('referral.partner.stats.today')}
+          value={formatWithCurrency(data.earnings_today / PARTNER_STATS.KOPEKS_DIVISOR)}
+          valueClassName="text-success-400"
+        />
+        <StatCard
+          label={t('referral.partner.stats.week')}
+          value={formatWithCurrency(data.earnings_week / PARTNER_STATS.KOPEKS_DIVISOR)}
+          valueClassName="text-success-400"
+        />
+        <StatCard
+          label={t('referral.partner.stats.month')}
+          value={formatWithCurrency(data.earnings_month / PARTNER_STATS.KOPEKS_DIVISOR)}
+          valueClassName="text-success-400"
+        />
+      </div>
+
+      {/* Conversion rate */}
+      <div className="rounded-xl bg-dark-800/30 p-3">
+        <div className="flex items-center justify-between">
+          <span className="text-sm text-dark-500">
+            {t('referral.partner.stats.conversionRate')}
+          </span>
+          <span className="text-lg font-semibold text-accent-400">{data.conversion_rate}%</span>
+        </div>
+        <div className="mt-2 h-2 overflow-hidden rounded-full bg-dark-700">
+          <div
+            className="h-full rounded-full bg-accent-500 transition-all"
+            style={{
+              width: `${Math.min(data.conversion_rate, PARTNER_STATS.MAX_CONVERSION_RATE)}%`,
+            }}
+          />
+        </div>
+      </div>
+
+      {/* Daily chart */}
+      <DailyChart data={data.daily_stats} chartId={campaignId} />
+
+      {/* Period comparison */}
+      <PeriodComparison data={data.period_comparison} />
+
+      {/* Top referrals */}
+      <TopReferrals referrals={data.top_referrals} />
+    </div>
+  );
+}

src/components/partner/TopReferrals.tsx

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+import { useTranslation } from 'react-i18next';
+
+import type { CampaignReferralItem } from '../../api/partners';
+import { PARTNER_STATS } from '../../constants/partner';
+import { useCurrency } from '../../hooks/useCurrency';
+
+interface TopReferralsProps {
+  referrals: CampaignReferralItem[];
+}
+
+interface StatusBadgeProps {
+  hasPaid: boolean;
+  isActive: boolean;
+}
+
+function StatusBadge({ hasPaid, isActive }: StatusBadgeProps) {
+  const { t } = useTranslation();
+
+  if (isActive) {
+    return <span className="badge-success">{t('referral.partner.stats.active')}</span>;
+  }
+  if (hasPaid) {
+    return <span className="badge-info">{t('referral.partner.stats.paid')}</span>;
+  }
+  return <span className="badge-neutral">{t('referral.partner.stats.pending')}</span>;
+}
+
+export function TopReferrals({ referrals }: TopReferralsProps) {
+  const { t, i18n } = useTranslation();
+  const { formatWithCurrency } = useCurrency();
+
+  if (referrals.length === 0) {
+    return (
+      <div className="bento-card py-6 text-center">
+        <div className="text-sm text-dark-400">{t('referral.partner.stats.noReferrals')}</div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="bento-card">
+      <h4 className="mb-3 text-sm font-semibold text-dark-200">
+        {t('referral.partner.stats.topReferrals')}
+      </h4>
+      <div className="space-y-2">
+        {referrals.map((ref) => (
+          <div
+            key={ref.id}
+            className="flex items-center justify-between rounded-xl border border-dark-700/30 bg-dark-800/30 p-3"
+          >
+            <div className="min-w-0 flex-1">
+              <div className="flex min-w-0 items-center gap-2">
+                <span className="min-w-0 truncate text-sm font-medium text-dark-100">
+                  {ref.full_name}
+                </span>
+                <StatusBadge hasPaid={ref.has_paid} isActive={ref.is_active} />
+              </div>
+              <div className="mt-0.5 text-xs text-dark-500">
+                {new Date(ref.created_at).toLocaleDateString(i18n.language)}
+              </div>
+            </div>
+            <div className="text-sm font-semibold text-success-400">
+              {formatWithCurrency(ref.total_earnings_kopeks / PARTNER_STATS.KOPEKS_DIVISOR)}
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}