Dashboard Notifications

"use client";

import { useCallback, useEffect, useId, useMemo, useRef, useState } from "react";
import type { KeyboardEvent } from "react";
import { AnimatePresence, motion, useReducedMotion } from "motion/react";

type Kind = "mention" | "review" | "security" | "billing" | "access";
type Filter = "all" | "unread" | "mentions";
type Resolution = "accepted" | "declined";
type Group = "Today" | "Yesterday" | "Earlier this week";

interface RequestSpec {
  prompt: string;
  accept: string;
  decline: string;
  acceptedNote: string;
  declinedNote: string;
}

interface Notification {
  id: string;
  kind: Kind;
  actor: string;
  initials: string;
  summary: string;
  target: string;
  body: string;
  minutesAgo: number;
  request?: RequestSpec;
}

const KIND: Record<Kind, { label: string; tint: string; dot: string }> = {
  mention: {
    label: "Mention",
    tint: "bg-violet-50 text-violet-600 ring-violet-200/80 dark:bg-violet-500/10 dark:text-violet-400 dark:ring-violet-500/25",
    dot: "bg-violet-500",
  },
  review: {
    label: "Review",
    tint: "bg-sky-50 text-sky-600 ring-sky-200/80 dark:bg-sky-500/10 dark:text-sky-400 dark:ring-sky-500/25",
    dot: "bg-sky-500",
  },
  security: {
    label: "Security",
    tint: "bg-rose-50 text-rose-600 ring-rose-200/80 dark:bg-rose-500/10 dark:text-rose-400 dark:ring-rose-500/25",
    dot: "bg-rose-500",
  },
  billing: {
    label: "Billing",
    tint: "bg-amber-50 text-amber-600 ring-amber-200/80 dark:bg-amber-500/10 dark:text-amber-400 dark:ring-amber-500/25",
    dot: "bg-amber-500",
  },
  access: {
    label: "Access",
    tint: "bg-emerald-50 text-emerald-600 ring-emerald-200/80 dark:bg-emerald-500/10 dark:text-emerald-400 dark:ring-emerald-500/25",
    dot: "bg-emerald-500",
  },
};

const FILTERS: ReadonlyArray<{ id: Filter; label: string }> = [
  { id: "all", label: "All" },
  { id: "unread", label: "Unread" },
  { id: "mentions", label: "Mentions" },
];

const GROUP_ORDER: ReadonlyArray<Group> = ["Today", "Yesterday", "Earlier this week"];

const SEED: ReadonlyArray<Notification> = [
  {
    id: "dnot-1",
    kind: "mention",
    actor: "Priya Raman",
    initials: "PR",
    summary: "mentioned you in",
    target: "#2841 · retry failed card charges",
    body: "“The 90-second retry delay you suggested is in. Duplicate-charge reports went to zero across a full week of replayed staging traffic. Can you sanity-check the flag plan before I widen past 4%?”",
    minutesAgo: 6,
  },
  {
    id: "dnot-2",
    kind: "security",
    actor: "Trust & Safety",
    initials: "TS",
    summary: "detected a new sign-in from",
    target: "Lisbon, Portugal",
    body: "Chrome 141 on macOS at 09:14 CET, IP 185.44.x.x. This device has never signed in to your account before, and the session already holds a live API token.",
    minutesAgo: 22,
    request: {
      prompt: "Was this you?",
      accept: "Yes, it was me",
      decline: "Revoke session",
      acceptedNote: "Session kept. We'll stop asking about Lisbon for the next 30 days.",
      declinedNote:
        "Session revoked and every other device signed out. Rotate your API token next — the old one stays valid for 60 minutes.",
    },
  },
  {
    id: "dnot-3",
    kind: "review",
    actor: "Daniel Okafor",
    initials: "DO",
    summary: "requested your review on",
    target: "#2846 · idempotency keys",
    body: "The diff touches the charge path: +212 −64 across nine files. Daniel left one open question — the key TTL is 24 hours but our retry window runs to 72, so a legitimate day-three retry would sail past the cache.",
    minutesAgo: 41,
  },
  {
    id: "dnot-4",
    kind: "billing",
    actor: "Billing",
    initials: "BL",
    summary: "could not charge",
    target: "INV-2026-0417 · $1,840.00",
    body: "The card ending 4291 was declined for insufficient funds. We retry automatically on 19 July. Your workspace stays on Scale until 24 July, after which new deploys are paused until the invoice clears.",
    minutesAgo: 185,
  },
  {
    id: "dnot-5",
    kind: "mention",
    actor: "Lena Fischer",
    initials: "LF",
    summary: "mentioned you in",
    target: "Design · invoice PDF spacing",
    body: "“Pulling you in before I cut the release. The 8px baseline fix works, but invoices with nine or more line items still collide with the tax summary at 72dpi. Hold the release or ship and patch Thursday?”",
    minutesAgo: 640,
  },
  {
    id: "dnot-6",
    kind: "access",
    actor: "Tomás Ibarra",
    initials: "TI",
    summary: "requested",
    target: "Deploy access · production",
    body: "Tomás has held staging deploy rights for six weeks across 41 releases with no failed rollouts. Production needs two approvals from the platform group; yours would be the first of the two.",
    minutesAgo: 1580,
    request: {
      prompt: "Grant production deploys?",
      accept: "Approve",
      decline: "Decline",
      acceptedNote: "Approved. Tomás still needs one more sign-off from the platform group before this takes effect.",
      declinedNote: "Declined. Tomás keeps staging access and gets a note asking for context.",
    },
  },
  {
    id: "dnot-7",
    kind: "billing",
    actor: "Platform",
    initials: "PF",
    summary: "says you're at 82% of",
    target: "the July API quota",
    body: "4.1M of 5M requests used with 14 days left in the cycle. At the current run rate you cross the cap on 26 July, and overage bills at $0.40 per thousand calls.",
    minutesAgo: 2010,
  },
  {
    id: "dnot-8",
    kind: "review",
    actor: "Marco Ellis",
    initials: "ME",
    summary: "approved and merged",
    target: "#2839 · webhook signature check",
    body: "Constant-time compare is in and the timing-leak test passes. Merged to main at 11:04 — it rides out with v2.20.1 tonight.",
    minutesAgo: 4300,
  },
];

const INITIALLY_READ: ReadonlyArray<string> = ["dnot-7", "dnot-8"];

function formatAge(minutes: number): string {
  if (minutes < 1) return "now";
  if (minutes < 60) return `${minutes}m`;
  const hours = Math.floor(minutes / 60);
  if (hours < 24) return `${hours}h`;
  return `${Math.floor(hours / 24)}d`;
}

function groupOf(minutes: number): Group {
  if (minutes < 1440) return "Today";
  if (minutes < 2880) return "Yesterday";
  return "Earlier this week";
}

function KindIcon({ kind }: { kind: Kind }) {
  const common = {
    width: 17,
    height: 17,
    viewBox: "0 0 24 24",
    fill: "none",
    stroke: "currentColor",
    strokeWidth: 1.8,
    strokeLinecap: "round" as const,
    strokeLinejoin: "round" as const,
    "aria-hidden": true,
  };
  if (kind === "mention") {
    return (
      <svg {...common}>
        <circle cx="12" cy="12" r="3.6" />
        <path d="M15.6 9v4.4a2.4 2.4 0 0 0 4.4 1.3A9 9 0 1 0 16.5 20" />
      </svg>
    );
  }
  if (kind === "review") {
    return (
      <svg {...common}>
        <circle cx="6.5" cy="6" r="2.5" />
        <circle cx="6.5" cy="18" r="2.5" />
        <path d="M6.5 8.5v7" />
        <path d="M14 5.5h3.5a2 2 0 0 1 2 2v6" />
        <path d="m17 11 2.5 2.5L22 11" />
      </svg>
    );
  }
  if (kind === "security") {
    return (
      <svg {...common}>
        <path d="M12 3 5 6v5.5c0 4.3 2.9 8.3 7 9.5 4.1-1.2 7-5.2 7-9.5V6Z" />
        <path d="M12 9.5v3.5" />
        <path d="M12 16.5h.01" />
      </svg>
    );
  }
  if (kind === "billing") {
    return (
      <svg {...common}>
        <rect x="2.5" y="5" width="19" height="14" rx="2.5" />
        <path d="M2.5 10h19" />
        <path d="M6.5 14.5h3" />
      </svg>
    );
  }
  return (
    <svg {...common}>
      <circle cx="8" cy="15.5" r="4" />
      <path d="m11 12.5 8-8" />
      <path d="m16.5 7 2 2" />
      <path d="m14 9.5 2 2" />
    </svg>
  );
}

export default function DashNotifications() {
  const reduced = useReducedMotion();
  const uid = useId();
  const listId = `${uid}-list`;

  const [items, setItems] = useState<ReadonlyArray<Notification>>(SEED);
  const [read, setRead] = useState<ReadonlySet<string>>(() => new Set(INITIALLY_READ));
  const [expanded, setExpanded] = useState<ReadonlySet<string>>(new Set());
  const [resolved, setResolved] = useState<Readonly<Record<string, Resolution>>>({});
  const [filter, setFilter] = useState<Filter>("all");
  const [quiet, setQuiet] = useState(false);
  const [undo, setUndo] = useState<{ item: Notification; index: number } | null>(null);

  const filterRefs = useRef<Array<HTMLButtonElement | null>>([]);
  const rowRefs = useRef<Array<HTMLButtonElement | null>>([]);
  const focusAfter = useRef<number | null>(null);

  const unreadCount = useMemo(
    () => items.reduce((total, item) => (read.has(item.id) ? total : total + 1), 0),
    [items, read],
  );

  const counts = useMemo<Record<Filter, number>>(
    () => ({
      all: items.length,
      unread: unreadCount,
      mentions: items.filter((item) => item.kind === "mention").length,
    }),
    [items, unreadCount],
  );

  const visible = useMemo(() => {
    if (filter === "unread") return items.filter((item) => !read.has(item.id));
    if (filter === "mentions") return items.filter((item) => item.kind === "mention");
    return items;
  }, [items, filter, read]);

  const sections = useMemo(() => {
    const buckets = new Map<Group, Notification[]>();
    for (const item of visible) {
      const key = groupOf(item.minutesAgo);
      const bucket = buckets.get(key);
      if (bucket) bucket.push(item);
      else buckets.set(key, [item]);
    }
    let cursor = 0;
    return GROUP_ORDER.filter((group) => buckets.has(group)).map((group) => {
      const rows = (buckets.get(group) ?? []).map((item) => ({ item, index: cursor++ }));
      return { group, rows };
    });
  }, [visible]);

  useEffect(() => {
    const target = focusAfter.current;
    if (target === null) return;
    focusAfter.current = null;
    const node = rowRefs.current[Math.max(Math.min(target, visible.length - 1), 0)];
    node?.focus();
  }, [visible]);

  useEffect(() => {
    if (!undo) return;
    const timer = window.setTimeout(() => setUndo(null), 6000);
    return () => window.clearTimeout(timer);
  }, [undo]);

  const markRead = useCallback((id: string) => {
    setRead((prev) => {
      if (prev.has(id)) return prev;
      const next = new Set(prev);
      next.add(id);
      return next;
    });
  }, []);

  const toggleRead = useCallback((id: string) => {
    setRead((prev) => {
      const next = new Set(prev);
      if (next.has(id)) next.delete(id);
      else next.add(id);
      return next;
    });
  }, []);

  const toggleExpanded = useCallback(
    (id: string) => {
      setExpanded((prev) => {
        const next = new Set(prev);
        if (next.has(id)) next.delete(id);
        else next.add(id);
        return next;
      });
      markRead(id);
    },
    [markRead],
  );

  const archive = useCallback(
    (id: string) => {
      const index = items.findIndex((item) => item.id === id);
      if (index === -1) return;
      setUndo({ item: items[index], index });
      setItems((prev) => prev.filter((item) => item.id !== id));
    },
    [items],
  );

  const restore = useCallback(() => {
    if (!undo) return;
    const entry = undo;
    setUndo(null);
    setItems((prev) => {
      if (prev.some((item) => item.id === entry.item.id)) return prev;
      const next = prev.slice();
      next.splice(Math.min(entry.index, next.length), 0, entry.item);
      return next;
    });
  }, [undo]);

  const resolve = useCallback(
    (id: string, decision: Resolution) => {
      setResolved((prev) => ({ ...prev, [id]: decision }));
      markRead(id);
    },
    [markRead],
  );

  const onFilterKeyDown = useCallback((event: KeyboardEvent<HTMLButtonElement>, index: number) => {
    let target = -1;
    if (event.key === "ArrowRight" || event.key === "ArrowDown") target = (index + 1) % FILTERS.length;
    else if (event.key === "ArrowLeft" || event.key === "ArrowUp")
      target = (index - 1 + FILTERS.length) % FILTERS.length;
    else if (event.key === "Home") target = 0;
    else if (event.key === "End") target = FILTERS.length - 1;
    if (target === -1) return;
    event.preventDefault();
    setFilter(FILTERS[target].id);
    filterRefs.current[target]?.focus();
  }, []);

  const onRowKeyDown = useCallback(
    (event: KeyboardEvent<HTMLButtonElement>, index: number, id: string) => {
      const last = visible.length - 1;
      if (event.key === "ArrowDown") {
        event.preventDefault();
        rowRefs.current[Math.min(index + 1, last)]?.focus();
        return;
      }
      if (event.key === "ArrowUp") {
        event.preventDefault();
        rowRefs.current[Math.max(index - 1, 0)]?.focus();
        return;
      }
      if (event.key === "Home") {
        event.preventDefault();
        rowRefs.current[0]?.focus();
        return;
      }
      if (event.key === "End") {
        event.preventDefault();
        rowRefs.current[last]?.focus();
        return;
      }
      if (event.key === "u" || event.key === "U") {
        event.preventDefault();
        toggleRead(id);
        return;
      }
      if (event.key === "Delete" || event.key === "Backspace") {
        event.preventDefault();
        focusAfter.current = Math.min(index, last - 1);
        archive(id);
      }
    },
    [visible.length, toggleRead, archive],
  );

  const ring =
    "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-2 focus-visible:ring-offset-white dark:focus-visible:ring-offset-slate-900";

  return (
    <section className="relative w-full bg-slate-50 px-4 py-16 sm:px-6 sm:py-24 dark:bg-slate-950">
      <style>{`
        @keyframes dnot-pulse {
          0%, 100% { transform: scale(1); opacity: 1; }
          50% { transform: scale(1.55); opacity: 0.35; }
        }
        @keyframes dnot-drain {
          from { transform: scaleX(1); }
          to { transform: scaleX(0); }
        }
        .dnot-pulse { animation: dnot-pulse 2.4s ease-in-out infinite; }
        .dnot-drain { animation: dnot-drain 6s linear forwards; transform-origin: left; }
        @media (prefers-reduced-motion: reduce) {
          .dnot-pulse, .dnot-drain { animation: none !important; }
          .dnot-drain { transform: scaleX(1); }
        }
      `}</style>

      <div className="mx-auto w-full max-w-2xl">
        <div className="overflow-hidden rounded-3xl border border-slate-200/80 bg-white shadow-xl shadow-slate-900/5 dark:border-slate-800 dark:bg-slate-900 dark:shadow-black/40">
          <header className="flex flex-wrap items-start justify-between gap-3 px-5 pb-4 pt-5 sm:px-6">
            <div className="min-w-0">
              <div className="flex items-center gap-2">
                <h2 className="text-base font-semibold tracking-tight text-slate-900 dark:text-slate-50">
                  Notifications
                </h2>
                <span
                  className="inline-flex h-5 min-w-5 items-center justify-center rounded-full bg-indigo-600 px-1.5 text-[11px] font-semibold tabular-nums text-white dark:bg-indigo-500"
                  aria-hidden="true"
                >
                  {unreadCount}
                </span>
                <span className="sr-only">{unreadCount} unread</span>
              </div>
              <p className="mt-0.5 text-sm text-slate-500 dark:text-slate-400">
                Payments workspace · synced 30 seconds ago
              </p>
            </div>

            <div className="flex items-center gap-2">
              <button
                type="button"
                onClick={() => setRead(new Set(items.map((item) => item.id)))}
                disabled={unreadCount === 0}
                className={`rounded-lg px-2.5 py-1.5 text-xs font-medium text-slate-600 transition hover:bg-slate-100 disabled:pointer-events-none disabled:opacity-40 dark:text-slate-300 dark:hover:bg-slate-800 ${ring}`}
              >
                Mark all read
              </button>
              <button
                type="button"
                role="switch"
                aria-checked={quiet}
                onClick={() => setQuiet((value) => !value)}
                className={`inline-flex items-center gap-2 rounded-lg border border-slate-200 py-1.5 pl-2.5 pr-2 text-xs font-medium text-slate-700 transition hover:bg-slate-50 dark:border-slate-700 dark:text-slate-200 dark:hover:bg-slate-800 ${ring}`}
              >
                Quiet hours
                <span
                  aria-hidden="true"
                  className={`relative h-4 w-7 rounded-full transition-colors ${
                    quiet ? "bg-indigo-600 dark:bg-indigo-500" : "bg-slate-300 dark:bg-slate-700"
                  }`}
                >
                  <span
                    className={`absolute top-0.5 h-3 w-3 rounded-full bg-white transition-all ${
                      quiet ? "left-3.5" : "left-0.5"
                    }`}
                  />
                </span>
              </button>
            </div>
          </header>

          <AnimatePresence initial={false}>
            {quiet && (
              <motion.div
                key="quiet"
                initial={reduced ? false : { height: 0, opacity: 0 }}
                animate={{ height: "auto", opacity: 1 }}
                exit={reduced ? { opacity: 0 } : { height: 0, opacity: 0 }}
                transition={{ duration: 0.24, ease: [0.22, 1, 0.36, 1] }}
                className="overflow-hidden"
              >
                <p className="mx-5 mb-4 rounded-xl border border-indigo-200/70 bg-indigo-50 px-3 py-2 text-xs leading-relaxed text-indigo-700 sm:mx-6 dark:border-indigo-500/25 dark:bg-indigo-500/10 dark:text-indigo-300">
                  Quiet hours on. Everything still lands here, but nothing pushes to your phone until 8:00 AM —
                  except security alerts, which always break through.
                </p>
              </motion.div>
            )}
          </AnimatePresence>

          <div
            role="radiogroup"
            aria-label="Filter notifications"
            className="flex gap-1.5 border-b border-slate-200/80 px-5 pb-3 sm:px-6 dark:border-slate-800"
          >
            {FILTERS.map((option, index) => {
              const selected = filter === option.id;
              return (
                <button
                  key={option.id}
                  ref={(node) => {
                    filterRefs.current[index] = node;
                  }}
                  type="button"
                  role="radio"
                  aria-checked={selected}
                  tabIndex={selected ? 0 : -1}
                  onClick={() => setFilter(option.id)}
                  onKeyDown={(event) => onFilterKeyDown(event, index)}
                  className={`inline-flex items-center gap-1.5 rounded-full px-3 py-1.5 text-xs font-medium transition ${ring} ${
                    selected
                      ? "bg-slate-900 text-white dark:bg-slate-100 dark:text-slate-900"
                      : "text-slate-600 hover:bg-slate-100 dark:text-slate-400 dark:hover:bg-slate-800"
                  }`}
                >
                  {option.label}
                  <span
                    className={`tabular-nums ${
                      selected ? "text-slate-300 dark:text-slate-500" : "text-slate-400 dark:text-slate-600"
                    }`}
                  >
                    {counts[option.id]}
                  </span>
                </button>
              );
            })}
          </div>

          <div id={listId} className="max-h-[32rem] overflow-y-auto">
            {visible.length === 0 ? (
              <p className="px-6 py-16 text-center text-sm text-slate-500 dark:text-slate-400">
                {filter === "unread"
                  ? "Inbox zero. Every notification here has been read."
                  : "Nothing matches this filter yet."}
              </p>
            ) : (
              sections.map(({ group, rows }) => (
                <div key={group}>
                  <h3 className="sticky top-0 z-10 border-b border-slate-100 bg-white/85 px-5 py-2 text-[11px] font-semibold uppercase tracking-wider text-slate-400 backdrop-blur sm:px-6 dark:border-slate-800/60 dark:bg-slate-900/85 dark:text-slate-500">
                    {group}
                  </h3>
                  <ul className="px-2 py-1 sm:px-3">
                    <AnimatePresence initial={false}>
                      {rows.map(({ item, index }) => {
                        const isRead = read.has(item.id);
                        const isOpen = expanded.has(item.id);
                        const decision = resolved[item.id];
                        const panelId = `${uid}-panel-${item.id}`;
                        return (
                          <motion.li
                            key={item.id}
                            layout={reduced ? false : "position"}
                            initial={false}
                            exit={
                              reduced
                                ? { opacity: 0 }
                                : { opacity: 0, x: -28, height: 0, transition: { duration: 0.24 } }
                            }
                            transition={{ duration: 0.28, ease: [0.22, 1, 0.36, 1] }}
                            className="overflow-hidden"
                          >
                            <div
                              className={`relative my-0.5 rounded-2xl transition-colors ${
                                isRead ? "" : "bg-slate-50/80 dark:bg-slate-800/40"
                              }`}
                            >
                              {!isRead && (
                                <span
                                  aria-hidden="true"
                                  className={`absolute left-0 top-3 bottom-3 w-0.5 rounded-full ${KIND[item.kind].dot}`}
                                />
                              )}

                              <div className="flex gap-3 p-3">
                                <span
                                  className={`grid h-9 w-9 shrink-0 place-items-center rounded-xl ring-1 ${KIND[item.kind].tint}`}
                                >
                                  <KindIcon kind={item.kind} />
                                </span>

                                <div className="min-w-0 flex-1">
                                  <div className="flex items-start gap-2">
                                    <button
                                      ref={(node) => {
                                        rowRefs.current[index] = node;
                                      }}
                                      type="button"
                                      onClick={() => toggleExpanded(item.id)}
                                      onKeyDown={(event) => onRowKeyDown(event, index, item.id)}
                                      aria-expanded={isOpen}
                                      aria-controls={panelId}
                                      aria-keyshortcuts="u Delete"
                                      className={`min-w-0 flex-1 rounded-lg px-1 py-0.5 text-left ${ring}`}
                                    >
                                      <span className="block text-sm leading-snug text-slate-600 dark:text-slate-300">
                                        <span
                                          className={`${
                                            isRead
                                              ? "font-medium text-slate-800 dark:text-slate-200"
                                              : "font-semibold text-slate-900 dark:text-slate-50"
                                          }`}
                                        >
                                          {item.actor}
                                        </span>{" "}
                                        {item.summary}{" "}
                                        <span className="font-medium text-slate-800 dark:text-slate-100">
                                          {item.target}
                                        </span>
                                      </span>
                                      <span className="mt-1 flex items-center gap-2 text-xs text-slate-400 dark:text-slate-500">
                                        <span
                                          className={`inline-flex items-center rounded px-1.5 py-0.5 text-[10px] font-semibold uppercase tracking-wide ring-1 ${KIND[item.kind].tint}`}
                                        >
                                          {KIND[item.kind].label}
                                        </span>
                                        <span className="tabular-nums">{formatAge(item.minutesAgo)}</span>
                                        {!isRead && (
                                          <span className="relative flex h-1.5 w-1.5">
                                            <span
                                              className={`dnot-pulse absolute inline-flex h-full w-full rounded-full ${KIND[item.kind].dot}`}
                                            />
                                            <span
                                              className={`relative inline-flex h-1.5 w-1.5 rounded-full ${KIND[item.kind].dot}`}
                                            />
                                          </span>
                                        )}
                                      </span>
                                    </button>

                                    <div className="flex shrink-0 items-center gap-0.5">
                                      <button
                                        type="button"
                                        onClick={() => toggleRead(item.id)}
                                        aria-label={
                                          isRead
                                            ? `Mark notification from ${item.actor} as unread`
                                            : `Mark notification from ${item.actor} as read`
                                        }
                                        className={`grid h-7 w-7 place-items-center rounded-lg text-slate-400 transition hover:bg-slate-100 hover:text-slate-700 dark:hover:bg-slate-700/60 dark:hover:text-slate-200 ${ring}`}
                                      >
                                        {isRead ? (
                                          <svg
                                            width="15"
                                            height="15"
                                            viewBox="0 0 24 24"
                                            fill="none"
                                            stroke="currentColor"
                                            strokeWidth="2"
                                            strokeLinecap="round"
                                            strokeLinejoin="round"
                                            aria-hidden="true"
                                          >
                                            <circle cx="12" cy="12" r="4.5" />
                                          </svg>
                                        ) : (
                                          <svg
                                            width="15"
                                            height="15"
                                            viewBox="0 0 24 24"
                                            fill="none"
                                            stroke="currentColor"
                                            strokeWidth="2"
                                            strokeLinecap="round"
                                            strokeLinejoin="round"
                                            aria-hidden="true"
                                          >
                                            <path d="m4.5 12.5 5 5 10-11" />
                                          </svg>
                                        )}
                                      </button>
                                      <button
                                        type="button"
                                        onClick={() => archive(item.id)}
                                        aria-label={`Archive notification from ${item.actor}`}
                                        className={`grid h-7 w-7 place-items-center rounded-lg text-slate-400 transition hover:bg-slate-100 hover:text-slate-700 dark:hover:bg-slate-700/60 dark:hover:text-slate-200 ${ring}`}
                                      >
                                        <svg
                                          width="15"
                                          height="15"
                                          viewBox="0 0 24 24"
                                          fill="none"
                                          stroke="currentColor"
                                          strokeWidth="2"
                                          strokeLinecap="round"
                                          strokeLinejoin="round"
                                          aria-hidden="true"
                                        >
                                          <rect x="3" y="4" width="18" height="4" rx="1.5" />
                                          <path d="M5 8v10.5A1.5 1.5 0 0 0 6.5 20h11a1.5 1.5 0 0 0 1.5-1.5V8" />
                                          <path d="M10 12h4" />
                                        </svg>
                                      </button>
                                    </div>
                                  </div>

                                  <AnimatePresence initial={false}>
                                    {isOpen && (
                                      <motion.div
                                        id={panelId}
                                        key="panel"
                                        initial={reduced ? false : { height: 0, opacity: 0 }}
                                        animate={{ height: "auto", opacity: 1 }}
                                        exit={reduced ? { opacity: 0 } : { height: 0, opacity: 0 }}
                                        transition={{ duration: 0.26, ease: [0.22, 1, 0.36, 1] }}
                                        className="overflow-hidden"
                                      >
                                        <div className="mt-2 rounded-xl border border-slate-200/80 bg-white p-3 dark:border-slate-700/70 dark:bg-slate-800/50">
                                          <div className="mb-2 flex items-center gap-2">
                                            <span className="grid h-5 w-5 place-items-center rounded-full bg-slate-200 text-[9px] font-bold text-slate-600 dark:bg-slate-700 dark:text-slate-300">
                                              {item.initials}
                                            </span>
                                            <span className="text-xs font-medium text-slate-500 dark:text-slate-400">
                                              {item.actor}
                                            </span>
                                          </div>
                                          <p className="text-sm leading-relaxed text-slate-600 dark:text-slate-300">
                                            {item.body}
                                          </p>

                                          {item.request && (
                                            <div className="mt-3 border-t border-slate-200/80 pt-3 dark:border-slate-700/70">
                                              {decision ? (
                                                <p className="text-xs leading-relaxed text-slate-500 dark:text-slate-400">
                                                  <span className="font-semibold text-slate-700 dark:text-slate-200">
                                                    {decision === "accepted"
                                                      ? item.request.accept
                                                      : item.request.decline}
                                                    {" · "}
                                                  </span>
                                                  {decision === "accepted"
                                                    ? item.request.acceptedNote
                                                    : item.request.declinedNote}
                                                </p>
                                              ) : (
                                                <div className="flex flex-wrap items-center gap-2">
                                                  <span className="mr-1 text-xs font-medium text-slate-500 dark:text-slate-400">
                                                    {item.request.prompt}
                                                  </span>
                                                  <button
                                                    type="button"
                                                    onClick={() => resolve(item.id, "accepted")}
                                                    className={`rounded-lg bg-slate-900 px-2.5 py-1.5 text-xs font-semibold text-white transition hover:bg-slate-700 dark:bg-slate-100 dark:text-slate-900 dark:hover:bg-white ${ring}`}
                                                  >
                                                    {item.request.accept}
                                                  </button>
                                                  <button
                                                    type="button"
                                                    onClick={() => resolve(item.id, "declined")}
                                                    className={`rounded-lg border border-slate-200 px-2.5 py-1.5 text-xs font-semibold text-slate-700 transition hover:bg-slate-50 dark:border-slate-600 dark:text-slate-200 dark:hover:bg-slate-700/60 ${ring}`}
                                                  >
                                                    {item.request.decline}
                                                  </button>
                                                </div>
                                              )}
                                            </div>
                                          )}
                                        </div>
                                      </motion.div>
                                    )}
                                  </AnimatePresence>
                                </div>
                              </div>
                            </div>
                          </motion.li>
                        );
                      })}
                    </AnimatePresence>
                  </ul>
                </div>
              ))
            )}
          </div>

          <div role="status" aria-live="polite">
            <AnimatePresence initial={false}>
              {undo && (
                <motion.div
                  key="undo"
                  initial={reduced ? false : { height: 0, opacity: 0 }}
                  animate={{ height: "auto", opacity: 1 }}
                  exit={reduced ? { opacity: 0 } : { height: 0, opacity: 0 }}
                  transition={{ duration: 0.22, ease: [0.22, 1, 0.36, 1] }}
                  className="overflow-hidden border-t border-slate-200/80 dark:border-slate-800"
                >
                  <div className="flex items-center justify-between gap-3 px-5 py-2.5 sm:px-6">
                    <p className="truncate text-xs text-slate-600 dark:text-slate-300">
                      Archived{" "}
                      <span className="font-medium text-slate-900 dark:text-slate-100">{undo.item.target}</span>
                    </p>
                    <button
                      type="button"
                      onClick={restore}
                      className={`shrink-0 rounded-lg px-2.5 py-1 text-xs font-semibold text-indigo-600 transition hover:bg-indigo-50 dark:text-indigo-400 dark:hover:bg-indigo-500/10 ${ring}`}
                    >
                      Undo
                    </button>
                  </div>
                  <div aria-hidden="true" className="h-0.5 w-full bg-slate-100 dark:bg-slate-800">
                    <div className="dnot-drain h-full w-full bg-indigo-500/70" />
                  </div>
                </motion.div>
              )}
            </AnimatePresence>
          </div>

          <footer className="flex flex-wrap items-center justify-between gap-2 border-t border-slate-200/80 px-5 py-3 sm:px-6 dark:border-slate-800">
            <p className="flex flex-wrap items-center gap-1.5 text-[11px] text-slate-400 dark:text-slate-500">
              <kbd className="rounded border border-slate-200 px-1 py-0.5 font-sans font-medium text-slate-500 dark:border-slate-700 dark:text-slate-400">
                ↑↓
              </kbd>
              move
              <kbd className="ml-1 rounded border border-slate-200 px-1 py-0.5 font-sans font-medium text-slate-500 dark:border-slate-700 dark:text-slate-400">
                U
              </kbd>
              read
              <kbd className="ml-1 rounded border border-slate-200 px-1 py-0.5 font-sans font-medium text-slate-500 dark:border-slate-700 dark:text-slate-400">
                Del
              </kbd>
              archive
            </p>
            <p className="text-xs text-slate-500 dark:text-slate-400">
              <span className="font-medium tabular-nums text-slate-700 dark:text-slate-200">{visible.length}</span>{" "}
              of {items.length} shown
            </p>
          </footer>
        </div>
      </div>
    </section>
  );
}