import { useAuthStore } from "../../stores/authStore";
import firstTrophy from "../../assets/icons/first_trophy.png";
import secondTrophy from "../../assets/icons/second_trophy.png";
import thirdTrophy from "../../assets/icons/third_trophy.png";
import { useEffect, useState } from "react";
import { getRandomColor } from "../../lib/utils";
import {
  Avatar,
  AvatarFallback,
  AvatarImage,
} from "../../components/ui/avatar";
import { Flame, LucideBadgeQuestionMark, Zap, ChevronDown } from "lucide-react";
import type { Leaderboard } from "../../types/leaderboard";
import { api } from "../../utils/api";
import { useExamConfigStore } from "../../stores/useExamConfigStore";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuRadioGroup,
  DropdownMenuRadioItem,
  DropdownMenuTrigger,
} from "../../components/ui/dropdown-menu";

const DOTS = [
  { size: 10, color: "#f97316", top: "6%", left: "4%", delay: "0s" },
  { size: 7, color: "#a855f7", top: "28%", left: "2%", delay: "1.2s" },
  { size: 9, color: "#22c55e", top: "58%", left: "3%", delay: "0.6s" },
  { size: 12, color: "#3b82f6", top: "10%", right: "4%", delay: "1.8s" },
  { size: 7, color: "#f43f5e", top: "42%", right: "2%", delay: "0.9s" },
  { size: 9, color: "#eab308", top: "72%", right: "5%", delay: "0.4s" },
];

const STYLES = `
  @import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;700;800;900&family=Nunito+Sans:wght@400;600;700&display=swap');

  :root { --content-max: 1100px; }

  .rw-screen {
    height: 100vh;
    background: #fffbf4;
    font-family: 'Nunito', sans-serif;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  .rw-blob { position:fixed;pointer-events:none;z-index:0;filter:blur(48px);opacity:0.35; }
  .rw-blob-1 { width:240px;height:240px;background:#fde68a;top:-80px;left:-80px;border-radius:60% 40% 70% 30%/50% 60% 40% 50%;animation:rwWobble1 14s ease-in-out infinite; }
  .rw-blob-2 { width:190px;height:190px;background:#a5f3c0;bottom:-50px;left:6%;border-radius:40% 60% 30% 70%/60% 40% 60% 40%;animation:rwWobble2 16s ease-in-out infinite; }
  .rw-blob-3 { width:210px;height:210px;background:#fbcfe8;top:15%;right:-60px;border-radius:70% 30% 50% 50%/40% 60% 40% 60%;animation:rwWobble1 18s ease-in-out infinite reverse; }
  .rw-blob-4 { width:150px;height:150px;background:#bfdbfe;bottom:12%;right:2%;border-radius:50% 50% 30% 70%/60% 40% 60% 40%;animation:rwWobble2 12s ease-in-out infinite; }

  @keyframes rwWobble1 {
    0%,100%{border-radius:60% 40% 70% 30%/50% 60% 40% 50%;transform:translate(0,0) rotate(0deg);}
    50%{border-radius:40% 60% 30% 70%/60% 40% 60% 40%;transform:translate(12px,16px) rotate(8deg);}
  }
  @keyframes rwWobble2 {
    0%,100%{border-radius:40% 60% 30% 70%/60% 40% 60% 40%;transform:translate(0,0) rotate(0deg);}
    50%{border-radius:60% 40% 70% 30%/40% 60% 40% 60%;transform:translate(-10px,12px) rotate(-6deg);}
  }

  .rw-dot { position:fixed;border-radius:50%;pointer-events:none;z-index:0;opacity:0.3;animation:rwFloat 7s ease-in-out infinite; }
  @keyframes rwFloat {
    0%,100%{transform:translateY(0) rotate(0deg);}
    50%{transform:translateY(-12px) rotate(180deg);}
  }

  .rw-sticky-top {
    position:relative;z-index:2;
    flex-shrink:0;
    padding:2rem 1.25rem 0;
  }
  .rw-sticky-top-inner {
    max-width:580px;margin:0 auto;
    display:flex;flex-direction:column;gap:1.25rem;
    padding-bottom:1rem;
    border-bottom:2px solid #f3f4f6;
  }

  .rw-scroll-area {
    position:relative;z-index:1;
    flex:1;overflow-y:auto;
    padding:1rem 1.25rem 10rem;
    -webkit-overflow-scrolling:touch;
  }
  .rw-scroll-inner { max-width:580px;margin:0 auto; }

  /* Desktop: wider centered layout */
  @media (min-width: 900px) {
    .rw-sticky-top-inner { max-width: var(--content-max); padding: 2rem 2rem 1.25rem; }
    .rw-scroll-inner { max-width: var(--content-max); }
    .rw-scroll-area { padding: 1.5rem 2.5rem 10rem; }

    /* Make empty state sit visually centered within larger canvas */
    .rw-empty { padding: 5rem 1rem; }

    /* Slightly larger island pill on wide screens and rebalance blobs */
    .rw-island-wrap { max-width: 420px; left:auto; right:calc((100vw - 256px - var(--content-max)) / 2); top:240px; bottom:auto; transform:none; margin-left:25px; }
    .rw-island-card { gap: 0.75rem; }

    /* Rebalance decorative blobs on wide screens */
    .rw-blob-1 { left: -120px; top: -100px; width:300px; height:300px; }
    .rw-blob-2 { left: 6%; bottom: -40px; }
    .rw-blob-3 { right: -100px; top: 8%; width:260px; height:260px; }
    .rw-blob-4 { right: 2%; bottom: 6%; }
  }

  @keyframes rwPopIn {
    from{opacity:0;transform:scale(0.92) translateY(12px);}
    to{opacity:1;transform:scale(1) translateY(0);}
  }
  .rw-anim   { animation:rwPopIn 0.4s cubic-bezier(0.34,1.56,0.64,1) both; }
  .rw-anim-1 { animation-delay:0.05s; }
  .rw-anim-2 { animation-delay:0.1s; }

  .rw-header { display:flex;flex-direction:column;align-items:center;gap:0.4rem;text-align:center; }
  .rw-title  { font-size:1.9rem;font-weight:900;color:#1e1b4b;letter-spacing:-0.02em; }
  .rw-rank-text { font-family:'Nunito Sans',sans-serif;font-size:0.9rem;font-weight:600;color:#9ca3af; }
  .rw-rank-text span { color:#a855f7;font-weight:800; }

  .rw-controls { display:flex;align-items:center;justify-content:space-between;gap:0.5rem; }

  .rw-tabs { display:flex;gap:0.4rem;flex-wrap:wrap; }
  .rw-tab-btn {
    padding:0.45rem 0.9rem;border-radius:100px;border:none;cursor:pointer;
    font-family:'Nunito',sans-serif;font-size:0.78rem;font-weight:800;
    display:flex;align-items:center;gap:0.35rem;
    transition:all 0.2s ease;
    background:white;border:2.5px solid #f3f4f6;color:#9ca3af;
    box-shadow:0 2px 8px rgba(0,0,0,0.04);
  }
  .rw-tab-btn.active { background:#1e1b4b;border-color:#1e1b4b;color:white;box-shadow:0 4px 0 #1e1b4b55; }

  .rw-filter-btn {
    display:flex;align-items:center;gap:0.35rem;
    padding:0.45rem 0.9rem;border-radius:100px;cursor:pointer;
    font-family:'Nunito',sans-serif;font-size:0.78rem;font-weight:800;
    background:white;border:2.5px solid #f3f4f6;color:#6b7280;
    box-shadow:0 2px 8px rgba(0,0,0,0.04);
    transition:border-color 0.2s;
  }
  .rw-filter-btn:hover { border-color:#c4b5fd;color:#7c3aed; }

  .rw-list { display:flex;flex-direction:column;gap:0.6rem; }

  .rw-row {
    display:flex;align-items:center;justify-content:space-between;
    background:white;border:2.5px solid #f3f4f6;border-radius:18px;
    padding:0.7rem 1rem;
    box-shadow:0 3px 10px rgba(0,0,0,0.04);
    transition:transform 0.15s ease,box-shadow 0.15s ease;
  }
  .rw-row:hover { transform:translateY(-1px);box-shadow:0 6px 16px rgba(0,0,0,0.07); }
  .rw-row.top-1 { border-color:#fde68a;background:linear-gradient(135deg,#fffbeb,white); }
  .rw-row.top-2 { border-color:#e2e8f0;background:linear-gradient(135deg,#f8fafc,white); }
  .rw-row.top-3 { border-color:#fecba8;background:linear-gradient(135deg,#fff7ed,white); }

  .rw-row-left  { display:flex;align-items:center;gap:0.75rem; }
  .rw-rank-cell { width:36px;display:flex;align-items:center;justify-content:center; }
  .rw-rank-num  { font-size:0.9rem;font-weight:900;color:#9ca3af; }
  .rw-user-name { font-size:0.88rem;font-weight:800;color:#1e1b4b; }
  .rw-row-right { display:flex;align-items:center;gap:0.35rem; }
  .rw-score     { font-size:0.9rem;font-weight:900;color:#1e1b4b; }

  .rw-xp-chip   { color:#84cc16; }
  .rw-q-chip    { color:#0891b2; }
  .rw-fire-chip { color:#ef4444; }

  .rw-skeleton { display:flex;flex-direction:column;gap:0.6rem; }
  .rw-skel-row {
    display:flex;align-items:center;justify-content:space-between;
    background:white;border:2.5px solid #f3f4f6;border-radius:18px;
    padding:0.7rem 1rem;
  }
  .rw-skel-left { display:flex;align-items:center;gap:0.75rem; }
  .rw-skel-circle { border-radius:50%;background:#f3f4f6;animation:rwShimmer 1.5s ease-in-out infinite; }
  .rw-skel-line   { border-radius:6px;background:#f3f4f6;animation:rwShimmer 1.5s ease-in-out infinite; }
  @keyframes rwShimmer { 0%,100%{opacity:1;}50%{opacity:0.4;} }

  /* ── Empty state ── */
  .rw-empty {
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    padding:3.5rem 1rem;gap:0.5rem;text-align:center;
  }
  .rw-empty-emoji { font-size:3rem;line-height:1; }
  .rw-empty-title { font-size:1rem;font-weight:800;color:#6b7280;margin:0; }
  .rw-empty-sub   { font-size:0.82rem;font-weight:600;color:#9ca3af;margin:0; }

  /* ── Floating island pill ── */
  .rw-island-wrap {
    position:fixed;
    bottom:calc(1.25rem + 80px + env(safe-area-inset-bottom));
    left:50%;
    transform:translateX(-50%);
    z-index:20;
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:0.5rem;
    width:auto;
    max-width:300px;
    top:auto;
  }

  .rw-island-card {
    background:rgba(255,251,244,0.92);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border:1.5px solid rgba(255,255,255,0.8);
    border-radius:24px;
    box-shadow:0 8px 32px rgba(0,0,0,0.12),inset 0 1px 0 rgba(255,255,255,0.9);
    padding:1rem 1.25rem;
    display:grid;
    grid-template-columns:1fr 1fr 1fr;
    gap:0.5rem;
    width:100%;
    box-sizing:border-box;
    opacity:0;
    transform:translateY(12px) scale(0.95);
    pointer-events:none;
    transition:opacity 0.3s cubic-bezier(0.34,1.56,0.64,1),transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
  }
  .rw-island-card.open { opacity:1;transform:translateY(0) scale(1);pointer-events:auto; }

  .rw-island-stat {
    display:flex;flex-direction:column;align-items:center;gap:0.2rem;
    padding:0.5rem 0.4rem;
    background:white;border:2px solid #f3f4f6;border-radius:14px;
  }
  .rw-island-stat-val { font-family:'Nunito',sans-serif;font-size:1rem;font-weight:900;color:#1e1b4b;line-height:1; }
  .rw-island-stat-label { font-family:'Nunito',sans-serif;font-size:0.58rem;font-weight:800;letter-spacing:0.1em;text-transform:uppercase;color:#9ca3af; }

  /* stat color variants */
  .rw-island-stat.xp      { border-color:#d9f99d; }
  .rw-island-stat.xp      .rw-island-stat-val { color:#16a34a; }
  .rw-island-stat.rank    { border-color:#e9d5ff; }
  .rw-island-stat.rank    .rw-island-stat-val { color:#9333ea; }
  .rw-island-stat.lvl     { border-color:#bfdbfe; }
  .rw-island-stat.lvl     .rw-island-stat-val { color:#2563eb; }
  .rw-island-stat.q       { border-color:#bae6fd; }
  .rw-island-stat.q       .rw-island-stat-val { color:#0891b2; }
  .rw-island-stat.streak  { border-color:#fecaca; }
  .rw-island-stat.streak  .rw-island-stat-val { color:#ef4444; }

  .rw-island-pill {
    width:100%;
    display:flex;align-items:center;gap:0.65rem;
    background:linear-gradient(135deg,#7c3aed,#a855f7);
    border:1.5px solid rgba(255,255,255,0.25);
    border-radius:100px;
    padding:0.45rem 1rem 0.45rem 0.45rem;
    box-shadow:0 6px 20px rgba(124,58,237,0.35),0 2px 6px rgba(124,58,237,0.2),inset 0 1px 0 rgba(255,255,255,0.2);
    cursor:pointer;
    user-select:none;
    -webkit-tap-highlight-color:transparent;
    justify-content:space-between;
    transition:transform 0.2s cubic-bezier(0.34,1.56,0.64,1),box-shadow 0.2s ease,opacity 0.2s ease;
    box-sizing:border-box;
  }
  .rw-island-pill:active { transform:scale(0.93); }
  .rw-island-pill.open { box-shadow:0 10px 28px rgba(124,58,237,0.4),0 4px 10px rgba(124,58,237,0.25),inset 0 1px 0 rgba(255,255,255,0.2); }
  /* Visually dim the pill when there's no user rank data to expand */
  .rw-island-pill.no-data { opacity:0.65;cursor:default; }

  .rw-island-left { display:flex;align-items:center;gap:0.65rem; }

  .rw-island-avatar {
    width:38px;height:38px;border-radius:50%;
    background:rgba(255,255,255,0.25);border:2px solid rgba(255,255,255,0.4);
    display:flex;align-items:center;justify-content:center;
    font-family:'Nunito',sans-serif;font-size:0.9rem;font-weight:900;color:white;
    overflow:hidden;flex-shrink:0;
  }
  .rw-island-avatar img { width:100%;height:100%;object-fit:cover; }

  .rw-island-info { display:flex;flex-direction:column;gap:1px; }
  .rw-island-you  { font-family:'Nunito',sans-serif;font-size:0.58rem;font-weight:800;letter-spacing:0.12em;text-transform:uppercase;color:rgba(255,255,255,0.6);line-height:1; }
  .rw-island-name { font-family:'Nunito',sans-serif;font-size:0.88rem;font-weight:900;color:white;line-height:1.1;white-space:nowrap; }

  .rw-island-right { display:flex;align-items:center;gap:0.5rem; }

  .rw-island-metric {
    display:flex;align-items:center;gap:0.25rem;
    padding:0.3rem 0.65rem;
    background:rgba(255,255,255,0.15);
    border:1.5px solid rgba(255,255,255,0.2);
    border-radius:100px;
  }
  .rw-island-metric-val { font-family:'Nunito',sans-serif;font-size:0.9rem;font-weight:900;color:white; }

  .rw-island-chevron {
    width:22px;height:22px;border-radius:50%;
    background:rgba(255,255,255,0.15);
    display:flex;align-items:center;justify-content:center;
    flex-shrink:0;
    transition:transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  }
  .rw-island-pill.open .rw-island-chevron { transform:rotate(180deg); }
`;

const TABS = [
  { id: "xp", label: "XP", icon: <Zap size={13} /> },
  {
    id: "questions",
    label: "Questions",
    icon: <LucideBadgeQuestionMark size={13} />,
  },
  { id: "streaks", label: "Streaks", icon: <Flame size={13} /> },
] as const;

type TabId = (typeof TABS)[number]["id"];

const trophies = [firstTrophy, secondTrophy, thirdTrophy];

// ── Score helpers ─────────────────────────────────────────────────────────────
const getScore = (u: Record<string, unknown>, tab: TabId): number | string => {
  if (tab === "xp") return (u.score ?? "—") as number | string;
  if (tab === "questions") return (u.score ?? "—") as number | string;
  if (tab === "streaks") return (u.streak ?? "—") as number | string;

  return "—";
};

const getUserScore = (
  ur: Record<string, unknown> | undefined,
  tab: TabId,
): number | string => {
  if (!ur) return "—";
  return getScore(ur, tab);
};

// ── Island card config — driven by active tab ─────────────────────────────────
const getIslandStats = (
  ur: Record<string, unknown> | undefined,
  tab: TabId,
) => {
  const rank = ur?.rank != null ? `#${ur.rank}` : "—";
  const xp = String(ur?.score ?? ur?.total_xp ?? "—");
  const level = String(ur?.current_level ?? ur?.level ?? "—");
  const qs = String(
    ur?.questions_answered ?? ur?.total_questions ?? ur?.questions ?? "—",
  );
  const str = String(ur?.streaks ?? ur?.streak ?? ur?.current_streak ?? "—");

  if (tab === "xp")
    return [
      { cls: "rank", val: rank, label: "Rank" },
      { cls: "xp", val: xp, label: "XP" },
      { cls: "lvl", val: level, label: "Level" },
    ];
  if (tab === "questions")
    return [
      { cls: "rank", val: rank, label: "Rank" },
      { cls: "q", val: qs, label: "Questions" },
      { cls: "lvl", val: level, label: "Level" },
    ];
  // streaks
  return [
    { cls: "rank", val: rank, label: "Rank" },
    { cls: "streak", val: str, label: "Streak" },
    { cls: "lvl", val: level, label: "Level" },
  ];
};

const SkeletonRows = () => (
  <div className="rw-skeleton">
    {Array.from({ length: 7 }).map((_, i) => (
      <div key={i} className="rw-skel-row">
        <div className="rw-skel-left">
          <div className="rw-skel-circle" style={{ width: 36, height: 36 }} />
          <div className="rw-skel-circle" style={{ width: 40, height: 40 }} />
          <div
            className="rw-skel-line"
            style={{ width: 100 + i * 10, height: 12 }}
          />
        </div>
        <div className="rw-skel-line" style={{ width: 40, height: 12 }} />
      </div>
    ))}
  </div>
);

const EmptyState = () => (
  <div className="rw-empty">
    <span className="rw-empty-emoji">🏜️</span>
    <p className="rw-empty-title">No entries yet</p>
    <p className="rw-empty-sub">Be the first on the board!</p>
  </div>
);

export const Rewards = () => {
  const user = useAuthStore((state) => state.user);
  const [time, setTime] = useState("today");
  const [activeTab, setActiveTab] = useState<TabId>("xp");
  const [leaderboard, setLeaderboard] = useState<Leaderboard | undefined>();
  const [loading, setLoading] = useState(false);
  const [islandOpen, setIslandOpen] = useState(false);
  const { setUserMetrics } = useExamConfigStore();

  const TIME_MAP: Record<string, string> = {
    today: "daily",
    week: "weekly",
    month: "monthly",
    alltime: "all_time",
  };

  useEffect(() => {
    const fetchData = async () => {
      if (!user) return;
      const authStorage = localStorage.getItem("auth-storage");
      if (!authStorage) return;
      const {
        state: { token },
      } = JSON.parse(authStorage) as { state?: { token?: string } };
      if (!token) return;
      try {
        setLoading(true);
        const response = await api.fetchLeaderboard(
          token,
          activeTab,
          TIME_MAP[time] ?? "daily",
        );
        setLeaderboard(response);
        // ✅ FIX 1: Guard against null user_rank before accessing its properties
        setUserMetrics({
          xp: response.user_rank?.score ?? 0,
          questions: 0,
          streak: response.user_rank?.streak ?? 0,
        });
      } catch (e) {
        console.error(e);
      } finally {
        setLoading(false);
      }
    };
    fetchData();
  }, [user, activeTab, time]);

  const metricIcon = (size = 17) =>
    activeTab === "xp" ? (
      <Zap size={size} className="rw-xp-chip" />
    ) : activeTab === "questions" ? (
      <LucideBadgeQuestionMark size={size} className="rw-q-chip" />
    ) : (
      <Flame size={size} className="rw-fire-chip" />
    );

  const metricIconWhite = (size = 15) =>
    activeTab === "xp" ? (
      <Zap size={size} color="rgba(255,255,255,0.85)" />
    ) : activeTab === "questions" ? (
      <LucideBadgeQuestionMark size={size} color="rgba(255,255,255,0.85)" />
    ) : (
      <Flame size={size} color="rgba(255,255,255,0.85)" />
    );

  // ✅ FIX 2: Safely cast user_rank — null becomes undefined so all optional chaining works
  const ur = (leaderboard?.user_rank ?? undefined) as
    | Record<string, unknown>
    | undefined;

  const islandStats = getIslandStats(ur, activeTab);
  const userMetric = getUserScore(ur, activeTab);
  const hasUserRank = ur != null;

  const formatTimeLabel = (t: string) =>
    ({ today: "Today", week: "Week", month: "Month", alltime: "All" })[t] ?? t;

  return (
    <div className="rw-screen">
      <style>{STYLES}</style>

      <div className="rw-blob rw-blob-1" />
      <div className="rw-blob rw-blob-2" />
      <div className="rw-blob rw-blob-3" />
      <div className="rw-blob rw-blob-4" />

      {DOTS.map((d, i) => (
        <div
          key={i}
          className="rw-dot"
          style={
            {
              width: d.size,
              height: d.size,
              background: d.color,
              top: d.top,
              left: d.left,
              right: d.right,
              animationDelay: d.delay,
              animationDuration: `${5 + i * 0.5}s`,
            } as React.CSSProperties
          }
        />
      ))}

      {/* Sticky header */}
      <div className="rw-sticky-top">
        <div className="rw-sticky-top-inner">
          <header className="rw-header rw-anim">
            <h1 className="rw-title">🏆 Leaderboard</h1>
            {loading ? (
              <div
                style={{
                  height: 16,
                  width: 180,
                  background: "#f3f4f6",
                  borderRadius: 8,
                  animation: "rwShimmer 1.5s ease-in-out infinite",
                }}
              />
            ) : (
              // ✅ FIX 3: Show a sensible message when user has no rank yet
              <p className="rw-rank-text">
                {hasUserRank ? (
                  <>
                    You're <span>#{ur.rank}</span> — keep grinding!
                  </>
                ) : (
                  "No rank yet — start answering questions!"
                )}
              </p>
            )}
          </header>

          <div className="rw-controls rw-anim rw-anim-1">
            <div className="rw-tabs">
              {TABS.map((tab) => (
                <button
                  key={tab.id}
                  className={`rw-tab-btn${activeTab === tab.id ? " active" : ""}`}
                  onClick={() => setActiveTab(tab.id)}
                >
                  {tab.icon} {tab.label}
                </button>
              ))}
            </div>

            <DropdownMenu>
              <DropdownMenuTrigger asChild>
                <button className="rw-filter-btn">
                  {formatTimeLabel(time)} <ChevronDown size={13} />
                </button>
              </DropdownMenuTrigger>
              <DropdownMenuContent
                style={{ fontFamily: "'Nunito',sans-serif", fontWeight: 700 }}
              >
                <DropdownMenuRadioGroup value={time} onValueChange={setTime}>
                  <DropdownMenuRadioItem value="today">
                    Today
                  </DropdownMenuRadioItem>
                  <DropdownMenuRadioItem value="week">
                    Week
                  </DropdownMenuRadioItem>
                  <DropdownMenuRadioItem value="month">
                    Month
                  </DropdownMenuRadioItem>
                  <DropdownMenuRadioItem value="alltime">
                    All Time
                  </DropdownMenuRadioItem>
                </DropdownMenuRadioGroup>
              </DropdownMenuContent>
            </DropdownMenu>
          </div>
        </div>
      </div>

      {/* Scrollable list */}
      <div className="rw-scroll-area">
        <div className="rw-scroll-inner">
          <div
            className="rw-list rw-anim rw-anim-2"
            style={{ paddingTop: "1rem" }}
          >
            {loading ? (
              <SkeletonRows />
            ) : !leaderboard?.top_users?.length ? (
              // ✅ FIX 4: Show empty state when top_users is empty or missing
              <EmptyState />
            ) : (
              leaderboard.top_users.map((u, index) => {
                const row = u as Record<string, unknown>;
                const rowClass = `rw-row${index === 0 ? " top-1" : index === 1 ? " top-2" : index === 2 ? " top-3" : ""}`;
                const score = getScore(row, activeTab);
                return (
                  <div key={String(row.user_id)} className={rowClass}>
                    <div className="rw-row-left">
                      <div className="rw-rank-cell">
                        {index < 3 ? (
                          <img
                            src={trophies[index]}
                            alt={`#${index + 1}`}
                            style={{ width: 32, height: 32 }}
                          />
                        ) : (
                          <span className="rw-rank-num">{index + 1}</span>
                        )}
                      </div>
                      <Avatar
                        className={getRandomColor()}
                        style={{ width: 38, height: 38 }}
                      >
                        <AvatarImage src={String(row.avatar_url ?? "")} />
                        <AvatarFallback
                          style={{
                            color: "black",
                            fontWeight: 900,
                            fontSize: "0.9rem",
                          }}
                        >
                          {String(row.name ?? "?")
                            .slice(0, 1)
                            .toUpperCase()}
                        </AvatarFallback>
                      </Avatar>
                      <span className="rw-user-name">
                        {String(row.name ?? "")}
                      </span>
                    </div>
                    <div className="rw-row-right">
                      <span className="rw-score">{score}</span>
                      {metricIcon()}
                    </div>
                  </div>
                );
              })
            )}
          </div>
        </div>
      </div>

      {/* Floating island */}
      <div className="rw-island-wrap">
        {/* Expanded card — stats change with active tab */}
        <div className={`rw-island-card${islandOpen ? " open" : ""}`}>
          {islandStats.map((s) => (
            <div key={s.cls} className={`rw-island-stat ${s.cls}`}>
              <span className="rw-island-stat-val">{s.val}</span>
              <span className="rw-island-stat-label">{s.label}</span>
            </div>
          ))}
        </div>

        {/* Pill — ✅ FIX 4 cont: disabled + dimmed when no user rank data */}
        <div
          className={[
            "rw-island-pill",
            islandOpen ? "open" : "",
            !hasUserRank ? "no-data" : "",
          ]
            .join(" ")
            .trim()}
          onClick={() => {
            // Only allow expanding if not loading and user rank data exists
            if (!loading && hasUserRank) setIslandOpen((o) => !o);
          }}
        >
          <div className="rw-island-left">
            <div className="rw-island-avatar">
              <span>
                {String(ur?.name ?? user?.name ?? "?")
                  .slice(0, 1)
                  .toUpperCase()}
              </span>
            </div>
            <div className="rw-island-info">
              <span className="rw-island-you">You</span>
              <span className="rw-island-name">
                {loading
                  ? "Loading…"
                  : hasUserRank
                    ? String(ur.name ?? user?.name ?? "—")
                    : (user?.name ?? "Not ranked")}
              </span>
            </div>
          </div>

          <div className="rw-island-right">
            <div className="rw-island-metric">
              <span className="rw-island-metric-val">{userMetric}</span>
              {metricIconWhite()}
            </div>
            <div className="rw-island-chevron">
              {/* Hide chevron when there's nothing to expand */}
              {hasUserRank && <ChevronDown size={13} color="white" />}
            </div>
          </div>
        </div>
      </div>
    </div>
  );
};
