feat: improve events browsing filters and calendar

src/app/events/page.tsx

@@ -1,9 +1,11 @@
 import type { Metadata } from "next";
 import Events from "@/views/Events";
-import { getPublicEvents } from "@/lib/public-api";
+import { getPublicEventBrowsePage } from "@/lib/public-api";
 import { siteUrl } from "@/lib/site";
 import { getCmsPageContent, getCmsSiteContent } from "@/lib/content-cms";
 import { cmsPageMetadata, collectionPageStructuredData, safeJsonLd } from "@/lib/seo";
+import { getEventPath } from "@/lib/event-ui";
+import { parseEventCatalogParams } from "@/lib/event-catalog";
 
 type SearchParams = Promise<Record<string, string | string[] | undefined>>;
 
@@ -41,8 +43,18 @@ export default async function EventsPage({
 }) {
   const resolved = await searchParams;
   const search = firstString(resolved.search).trim();
-  const [events, content, siteContent] = await Promise.all([
+  const query = new URLSearchParams();
-    getPublicEvents({ search: search || undefined }),
+  Object.entries(resolved).forEach(([key, value]) => {
+    const firstValue = firstString(value);
+    if (firstValue !== "") query.set(key, firstValue);
+  });
+  const requestedFilters = parseEventCatalogParams(query, Number.MAX_SAFE_INTEGER);
+  const [eventPage, content, siteContent] = await Promise.all([
+    getPublicEventBrowsePage({
+      ...requestedFilters,
+      priceMin: query.has("price_min") ? requestedFilters.priceMin : undefined,
+      priceMax: query.has("price_max") ? requestedFilters.priceMax : undefined,
+    }),
     getCmsPageContent("events"),
     getCmsSiteContent(),
   ]);
@@ -51,9 +63,9 @@ export default async function EventsPage({
     description: content.seo.description || content.intro,
     path: "/events",
     siteContent,
-    items: events.filter((event) => event.slug).map((event) => ({
+    items: eventPage.results.map((event) => ({
       name: event.title,
-      url: new URL(`/events/${encodeURIComponent(event.slug)}`, siteUrl).toString(),
+      url: new URL(getEventPath(event), siteUrl).toString(),
       description: event.description,
     })),
   });
@@ -61,7 +73,11 @@ export default async function EventsPage({
   return (
     <>
       <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: safeJsonLd(structuredData) }} />
-      <Events content={content} initialEvents={events} initialSearch={search} />
+      <Events
+        content={content}
+        initialPage={eventPage}
+        initialFilters={parseEventCatalogParams(query, eventPage.price_ceiling)}
+      />
     </>
   );
 }

src/components/ProgressiveImage.tsx

@@ -32,9 +32,11 @@ export default function ProgressiveImage({
 }: ProgressiveImageProps) {
   const resolvedSrc = src || blurSrc || fallbackSrc;
   const [loaded, setLoaded] = React.useState(false);
+  const imageRef = React.useRef<HTMLImageElement>(null);
 
   React.useEffect(() => {
-    setLoaded(false);
+    const image = imageRef.current;
+    setLoaded(Boolean(image?.complete && image.naturalWidth > 0));
   }, [resolvedSrc]);
 
   return (
@@ -54,6 +56,7 @@ export default function ProgressiveImage({
       )}
 
       <img
+        ref={imageRef}
         src={resolvedSrc}
         alt={alt}
         sizes={sizes}

src/components/events/EventCard.tsx

@@ -0,0 +1,99 @@
+"use client";
+
+import { ArrowLeft, CalendarDays, MapPin, Ticket, UsersRound } from "lucide-react";
+import { Badge } from "@/components/ui/badge";
+import ProgressiveImage from "@/components/ProgressiveImage";
+import { Link } from "@/lib/router";
+import type { EventListItemSchema } from "@/lib/types";
+import { formatJalali, formatNumberPersian, formatToman, getEventCardImageUrl } from "@/lib/utils";
+import {
+  getEventCardState,
+  getEventBrowseLabel,
+  getEventRegistrationMessage,
+  getEventRegistrationState,
+  getEventPath,
+} from "@/lib/event-ui";
+import { getEventLocationLabel } from "@/lib/event-catalog";
+
+export function EventCard({ event, now }: { event: EventListItemSchema; now: number }) {
+  const statusLabel = getEventBrowseLabel(event, now);
+  const registration = getEventRegistrationState(event, now);
+  const registrationText = getEventRegistrationMessage(event, now);
+  const canRegister = registration.state === "open";
+  const isPast = getEventCardState(event, now) === "past";
+  const isComingSoon = statusLabel === "به‌زودی";
+  const imageEffect = canRegister
+    ? ""
+    : "scale-[1.02] blur-sm group-hover:scale-100 group-hover:blur-none group-active:scale-100 group-active:blur-none group-focus-visible:scale-100 group-focus-visible:blur-none";
+  const statusOverlayEffect = "opacity-100 group-hover:opacity-0 group-active:opacity-0 group-focus-visible:opacity-0";
+
+  return (
+    <article className="h-full min-w-0">
+      <Link
+        to={getEventPath(event)}
+        className={`group flex h-full min-w-0 flex-col overflow-hidden rounded-xl border bg-card transition-shadow hover:shadow-md focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 ${canRegister ? "border-primary/45 shadow-sm ring-1 ring-primary/10" : "border-border"}`}
+      >
+        <div className="relative aspect-video w-full shrink-0 overflow-hidden bg-muted">
+          <ProgressiveImage
+            src={getEventCardImageUrl(event)}
+            alt={event.title}
+            wrapperClassName="h-full w-full"
+            className={`h-full w-full object-cover ${canRegister ? "" : "transition-[filter,transform] duration-300 motion-reduce:transition-none"} ${imageEffect}`}
+          />
+          {canRegister ? (
+            <Badge className="absolute right-2 top-2 inline-flex items-center gap-1.5 border-primary/20 bg-primary text-xs text-primary-foreground shadow-sm">
+              <Ticket aria-hidden="true" className="size-3.5" />در حال ثبت‌نام
+            </Badge>
+          ) : null}
+          {!canRegister ? (
+            <div className={`absolute inset-0 flex items-center justify-center bg-black/20 transition-opacity duration-200 motion-reduce:transition-none ${statusOverlayEffect}`}>
+              <span className="rounded-full bg-background/95 px-4 py-2 text-sm font-semibold text-foreground shadow-sm">
+                {statusLabel}
+              </span>
+            </div>
+          ) : null}
+        </div>
+
+        <div className="flex min-w-0 flex-1 flex-col p-3 md:p-4">
+          <h2 className="line-clamp-2 text-sm font-bold leading-6 transition-colors group-hover:text-primary md:text-base md:leading-7">
+            {event.title}
+          </h2>
+
+          <dl className="mt-2 grid gap-2 text-xs md:mt-4 md:gap-3 md:text-sm">
+            <div className="flex min-w-0 items-center gap-2 text-muted-foreground">
+              <CalendarDays aria-hidden="true" className="size-4 shrink-0 text-primary" />
+              <dt className="sr-only">زمان</dt>
+              <dd className="truncate">{formatJalali(event.start_time, false)}</dd>
+            </div>
+            <div className="flex min-w-0 items-center gap-2 text-muted-foreground">
+              <MapPin aria-hidden="true" className="size-4 shrink-0 text-primary" />
+              <dt className="sr-only">محل برگزاری</dt>
+              <dd className="truncate">{getEventLocationLabel(event)}</dd>
+            </div>
+            <div className="flex items-center gap-2 text-muted-foreground">
+              <Ticket aria-hidden="true" className="size-4 shrink-0 text-primary" />
+              <dt className="sr-only">هزینهٔ ثبت‌نام</dt>
+              <dd>{Number(event.price ?? 0) <= 0 ? "رایگان" : formatToman(event.price)}</dd>
+            </div>
+            <div className="flex min-w-0 items-center gap-2 text-muted-foreground">
+              <UsersRound aria-hidden="true" className="size-4 shrink-0 text-primary" />
+              <dt className="sr-only">وضعیت ثبت‌نام</dt>
+              <dd className="truncate">
+                {registration.state === "open" && registration.remaining !== null
+                  ? `${formatNumberPersian(registration.remaining)} نفر ظرفیت باقی‌مانده`
+                  : registrationText}
+              </dd>
+            </div>
+          </dl>
+
+          <div className="mt-auto pt-5">
+            <span className={`inline-flex min-h-10 w-full items-center justify-center gap-2 rounded-md px-3 py-2 text-center text-xs font-semibold transition-colors md:min-h-11 md:text-sm ${isPast || isComingSoon ? "bg-muted text-muted-foreground group-hover:bg-muted/80 dark:bg-primary/15 dark:text-primary dark:group-hover:bg-primary/20" : "bg-primary text-primary-foreground group-hover:bg-primary/90"}`}>
+              {canRegister ? "ثبت‌نام در رویداد" : "مشاهده جزئیات رویداد"}
+              <ArrowLeft aria-hidden="true" className="size-4 shrink-0 transition-transform group-hover:-translate-x-0.5" />
+            </span>
+          </div>
+        </div>
+      </Link>
+    </article>
+  );
+}

src/components/events/EventDateRangePicker.tsx

@@ -0,0 +1,524 @@
+"use client";
+
+import { useEffect, useMemo, useRef, useState } from "react";
+import DateObject from "react-date-object";
+import persian from "react-date-object/calendars/persian";
+import persian_fa from "react-date-object/locales/persian_fa";
+import { CalendarDays, ChevronLeft, ChevronRight } from "lucide-react";
+import * as DialogPrimitive from "@radix-ui/react-dialog";
+import { toPersianDigits } from "@/lib/utils";
+
+const weekdays = [
+  { label: "شن", name: "شنبه" },
+  { label: "یک", name: "یکشنبه" },
+  { label: "دو", name: "دوشنبه" },
+  { label: "سه", name: "سه‌شنبه" },
+  { label: "چه", name: "چهارشنبه" },
+  { label: "پن", name: "پنجشنبه" },
+  { label: "جم", name: "جمعه" },
+];
+
+const persianMonths = [
+  "فروردین",
+  "اردیبهشت",
+  "خرداد",
+  "تیر",
+  "مرداد",
+  "شهریور",
+  "مهر",
+  "آبان",
+  "آذر",
+  "دی",
+  "بهمن",
+  "اسفند",
+];
+
+function toPersianDate(date: DateObject) {
+  return new DateObject({ date, calendar: persian, locale: persian_fa }).set({
+    hour: 0,
+    minute: 0,
+    second: 0,
+    millisecond: 0,
+  });
+}
+
+function getToday() {
+  return toPersianDate(new DateObject({ calendar: persian, locale: persian_fa }));
+}
+
+function isSameDate(first: DateObject | null, second: DateObject | null) {
+  return Boolean(
+    first && second && first.year === second.year && first.monthIndex === second.monthIndex && first.day === second.day,
+  );
+}
+
+function getCalendarDays(month: DateObject) {
+  const firstDay = toPersianDate(month).toFirstOfMonth();
+  const monthLength = firstDay.month.length;
+  const offset = firstDay.weekDay.index;
+  // Reserve six rows for every month so the calendar modal keeps a steady height.
+  const rowCount = 6;
+  const days: (DateObject | null)[] = Array.from({ length: offset }, () => null);
+
+  for (let day = 1; day <= monthLength; day += 1) {
+    days.push(new DateObject(firstDay).setDay(day));
+  }
+
+  while (days.length < rowCount * 7) days.push(null);
+
+  return Array.from({ length: rowCount }, (_, row) => days.slice(row * 7, row * 7 + 7));
+}
+
+function getRangeDates(value: DateObject[]) {
+  if (value.length < 2) return null;
+  const [first, second] = value.map(toPersianDate).sort((a, b) => a.valueOf() - b.valueOf());
+  return { start: first, end: second };
+}
+
+function monthLabel(date: DateObject) {
+  return toPersianDate(date).toFirstOfMonth().format("MMMM YYYY");
+}
+
+function CalendarMonth({
+  month,
+  action,
+  selectedDates,
+  range,
+  hoveredDate,
+  focusedDate,
+  today,
+  onSelect,
+  onNavigate,
+  onHover,
+  onFocusDate,
+  onKeyDown,
+  selectionMode = "days",
+  yearPageStart = month.year,
+  onOpenMonthPicker,
+  onOpenYearPicker,
+  onSelectionNavigate,
+  onSelectYear,
+  onSelectMonth,
+}: {
+  month: DateObject;
+  action: "left" | "right" | "both" | null;
+  selectedDates: DateObject[];
+  range: { start: DateObject; end: DateObject } | null;
+  hoveredDate: DateObject | null;
+  focusedDate: DateObject;
+  today: DateObject;
+  onSelect: (date: DateObject) => void;
+  onNavigate: (monthDelta: -2 | -1 | 1 | 2) => void;
+  onHover: (date: DateObject | null) => void;
+  onFocusDate: (date: DateObject) => void;
+  onKeyDown: (event: React.KeyboardEvent<HTMLButtonElement>, date: DateObject) => void;
+  selectionMode?: "days" | "months" | "years";
+  yearPageStart?: number;
+  onOpenMonthPicker?: () => void;
+  onOpenYearPicker?: () => void;
+  onSelectionNavigate?: (direction: -1 | 1) => void;
+  onSelectYear?: (year: number) => void;
+  onSelectMonth?: (monthIndex: number) => void;
+}) {
+  const rows = getCalendarDays(month);
+
+  return (
+    <section className="event-range-month" role="group" aria-label={monthLabel(month)}>
+      <header className="event-range-month-header">
+        {action === "left" || action === "both" ? (
+          <button
+            type="button"
+            className="event-range-nav event-range-nav-left"
+            aria-label={selectionMode === "days" ? "ماه بعد" : selectionMode === "years" ? "۱۲ سال بعد" : "سال بعد"}
+            onClick={() => selectionMode === "days" ? onNavigate(action === "both" ? 1 : 2) : onSelectionNavigate?.(1)}
+          >
+            <ChevronLeft aria-hidden="true" />
+          </button>
+        ) : null}
+        {onOpenMonthPicker && onOpenYearPicker ? (
+          <div className="event-range-month-title event-range-month-title-picker" dir="rtl">
+            <button
+              type="button"
+              className={selectionMode === "months" ? "is-active" : undefined}
+              aria-label={`انتخاب ماه، ${toPersianDate(month).format("MMMM")}`}
+              aria-pressed={selectionMode === "months"}
+              onClick={onOpenMonthPicker}
+            >
+              {toPersianDate(month).format("MMMM")}
+            </button>
+            <button
+              type="button"
+              className={selectionMode === "years" ? "is-active" : undefined}
+              aria-label={`انتخاب سال، ${toPersianDigits(month.year)}`}
+              aria-pressed={selectionMode === "years"}
+              onClick={onOpenYearPicker}
+            >
+              {toPersianDigits(month.year)}
+            </button>
+          </div>
+        ) : (
+          <h4 className="event-range-month-title">{monthLabel(month)}</h4>
+        )}
+        {action === "right" || action === "both" ? (
+          <button
+            type="button"
+            className="event-range-nav event-range-nav-right"
+            aria-label={selectionMode === "days" ? "ماه قبل" : selectionMode === "years" ? "۱۲ سال قبل" : "سال قبل"}
+            onClick={() => selectionMode === "days" ? onNavigate(action === "both" ? -1 : -2) : onSelectionNavigate?.(-1)}
+          >
+            <ChevronRight aria-hidden="true" />
+          </button>
+        ) : null}
+      </header>
+
+      <div className={`event-range-calendar-body is-${selectionMode}`}>
+        {selectionMode === "months" ? (
+          <div className="event-range-month-choices" role="group" aria-label="انتخاب ماه‌ها">
+            {persianMonths.map((name, monthIndex) => (
+              <button
+                type="button"
+                key={name}
+                aria-pressed={month.monthIndex === monthIndex}
+                onClick={() => onSelectMonth?.(monthIndex)}
+              >
+                {name}
+              </button>
+            ))}
+          </div>
+        ) : selectionMode === "years" ? (
+          <div className="event-range-year-choices" role="group" aria-label="انتخاب سال">
+            {Array.from({ length: 12 }, (_, index) => yearPageStart + index).map((year) => (
+              <button
+                type="button"
+                key={year}
+                aria-pressed={month.year === year}
+                onClick={() => onSelectYear?.(year)}
+              >
+                {toPersianDigits(year)}
+              </button>
+            ))}
+          </div>
+        ) : (
+          <>
+            <div className="event-range-weekdays" role="row">
+              {weekdays.map((weekday) => (
+                <span key={weekday.name} role="columnheader" title={weekday.name} aria-label={weekday.name}>
+                  {weekday.label}
+                </span>
+              ))}
+            </div>
+
+            <div className="event-range-days" role="grid" aria-label={monthLabel(month)}>
+              {rows.map((week, rowIndex) => (
+                <div className="event-range-week" role="row" key={`week-${rowIndex}`}>
+                  {week.map((date, dayIndex) => {
+                    if (!date) {
+                      return <span aria-hidden="true" className="event-range-empty-day" key={`empty-${rowIndex}-${dayIndex}`} />;
+                    }
+
+                    const isStart = isSameDate(range?.start ?? selectedDates[0] ?? null, date);
+                    const isEnd = Boolean(range && isSameDate(range.end, date));
+                    const isInRange = Boolean(range && date.valueOf() >= range.start.valueOf() && date.valueOf() <= range.end.valueOf());
+                    const isHoverPreview = selectedDates.length === 1 && isSameDate(hoveredDate, date) && !isStart;
+                    const isToday = isSameDate(today, date);
+                    const isFocused = isSameDate(focusedDate, date);
+
+                    return (
+                      <button
+                        type="button"
+                        role="gridcell"
+                        aria-label={date.format("dddd، D MMMM YYYY")}
+                        aria-pressed={isStart || isEnd}
+                        tabIndex={isFocused ? 0 : -1}
+                        data-event-calendar-day={date.valueOf()}
+                        className={[
+                          "event-range-day",
+                          isInRange ? "is-in-range" : "",
+                          isStart ? "is-range-start" : "",
+                          isEnd ? "is-range-end" : "",
+                          isHoverPreview ? "is-hover-preview" : "",
+                          isToday ? "is-today" : "",
+                        ].filter(Boolean).join(" ")}
+                        key={date.valueOf()}
+                        onClick={() => onSelect(date)}
+                        onMouseEnter={() => onHover(date)}
+                        onMouseLeave={() => onHover(null)}
+                        onFocus={() => onFocusDate(date)}
+                        onKeyDown={(event) => onKeyDown(event, date)}
+                      >
+                        {date.format("D")}
+                      </button>
+                    );
+                  })}
+                </div>
+              ))}
+            </div>
+          </>
+        )}
+      </div>
+    </section>
+  );
+}
+
+export function EventDateRangePicker({
+  value,
+  onChange,
+  disabled = false,
+  compact = false,
+}: {
+  value: DateObject[];
+  onChange: (value: DateObject[]) => void;
+  disabled?: boolean;
+  compact?: boolean;
+}) {
+  const initialDate = value[0] ? toPersianDate(value[0]) : getToday();
+  const [open, setOpen] = useState(false);
+  const [draftValue, setDraftValue] = useState<DateObject[]>(value.map(toPersianDate));
+  const [visibleMonth, setVisibleMonth] = useState(() => initialDate.toFirstOfMonth());
+  const [hoveredDate, setHoveredDate] = useState<DateObject | null>(null);
+  const [selectionMode, setSelectionMode] = useState<"days" | "months" | "years">("days");
+  const [yearPageStart, setYearPageStart] = useState(() => Math.floor(initialDate.year / 12) * 12);
+  const [focusedDate, setFocusedDate] = useState(() => initialDate);
+  const [singleMonth, setSingleMonth] = useState(false);
+  const calendarRef = useRef<HTMLDivElement>(null);
+  const today = useMemo(getToday, []);
+  const selectedRange = getRangeDates(draftValue);
+  const followingMonth = new DateObject(visibleMonth).add(1, "month").toFirstOfMonth();
+  const canSave = draftValue.length !== 1;
+
+  useEffect(() => {
+    const mediaQuery = window.matchMedia("(max-width: 640px)");
+    const updateLayout = () => setSingleMonth(mediaQuery.matches);
+    updateLayout();
+    mediaQuery.addEventListener("change", updateLayout);
+    return () => mediaQuery.removeEventListener("change", updateLayout);
+  }, []);
+
+  useEffect(() => {
+    if (!open) return;
+    const frame = requestAnimationFrame(() => {
+      calendarRef.current
+        ?.querySelector<HTMLButtonElement>(`[data-event-calendar-day="${focusedDate.valueOf()}"]`)
+        ?.focus();
+    });
+    return () => cancelAnimationFrame(frame);
+  }, [focusedDate, open, visibleMonth]);
+
+  const selectedLabel = value.length === 2
+    ? `${toPersianDate(value[0]).format("YYYY/MM/DD")} تا ${toPersianDate(value[1]).format("YYYY/MM/DD")}`
+    : value.length === 1
+      ? toPersianDate(value[0]).format("YYYY/MM/DD")
+      : "";
+
+  function changeVisibleMonth(date: DateObject) {
+    const nextDate = toPersianDate(date);
+    setVisibleMonth(new DateObject(nextDate).toFirstOfMonth());
+    setFocusedDate(nextDate);
+  }
+
+  function shiftVisibleMonths(monthDelta: -2 | -1 | 1 | 2) {
+    const nextMonth = new DateObject(visibleMonth).add(monthDelta, "month").toFirstOfMonth();
+    changeVisibleMonth(nextMonth);
+  }
+
+  function selectMonth(monthIndex: number) {
+    const nextMonth = new DateObject(visibleMonth).set({ month: monthIndex + 1, day: 1 }).toFirstOfMonth();
+    setVisibleMonth(nextMonth);
+    setFocusedDate(nextMonth);
+    setSelectionMode("days");
+  }
+
+  function selectYear(year: number) {
+    const nextMonth = new DateObject(visibleMonth)
+      .set({ year, month: visibleMonth.monthIndex + 1, day: 1 })
+      .toFirstOfMonth();
+    setVisibleMonth(nextMonth);
+    setFocusedDate(nextMonth);
+    setYearPageStart(Math.floor(year / 12) * 12);
+    setSelectionMode("months");
+  }
+
+  function showMonthPicker() {
+    setSelectionMode("months");
+  }
+
+  function showYearPicker() {
+    setYearPageStart(Math.floor(visibleMonth.year / 12) * 12);
+    setSelectionMode("years");
+  }
+
+  function navigateSelection(direction: -1 | 1) {
+    if (selectionMode === "years") {
+      setYearPageStart((current) => current + direction * 12);
+      return;
+    }
+    const nextMonth = new DateObject(visibleMonth)
+      .set({ year: visibleMonth.year + direction, day: 1 })
+      .toFirstOfMonth();
+    setVisibleMonth(nextMonth);
+    setFocusedDate(nextMonth);
+  }
+
+  function handleSelect(date: DateObject) {
+    const selectedDate = toPersianDate(date);
+    setHoveredDate(null);
+    if (draftValue.length !== 1) {
+      setFocusedDate(selectedDate);
+      setDraftValue([selectedDate]);
+      return;
+    }
+
+    const [start, end] = [toPersianDate(draftValue[0]), selectedDate].sort((a, b) => a.valueOf() - b.valueOf());
+    setDraftValue([start, end]);
+  }
+
+  function handleSave() {
+    if (!canSave) return;
+    if (draftValue.length === 2 || value.length > 0) onChange(draftValue);
+    setOpen(false);
+  }
+
+  function handleKeyDown(event: React.KeyboardEvent<HTMLButtonElement>, date: DateObject) {
+    const movement: Record<string, [number, string]> = {
+      ArrowLeft: [1, "day"],
+      ArrowRight: [-1, "day"],
+      ArrowUp: [-7, "day"],
+      ArrowDown: [7, "day"],
+      PageUp: [event.shiftKey ? -12 : -1, "month"],
+      PageDown: [event.shiftKey ? 12 : 1, "month"],
+    };
+    let nextDate: DateObject | null = null;
+
+    if (event.key === "Home") {
+      nextDate = new DateObject(date).subtract(date.weekDay.index, "day");
+    } else if (event.key === "End") {
+      nextDate = new DateObject(date).add(6 - date.weekDay.index, "day");
+    } else if (movement[event.key]) {
+      const [amount, unit] = movement[event.key];
+      nextDate = new DateObject(date).add(amount, unit);
+    }
+
+    if (!nextDate) return;
+    event.preventDefault();
+    nextDate = toPersianDate(nextDate);
+    setFocusedDate(nextDate);
+
+    const firstMonth = toPersianDate(visibleMonth).toFirstOfMonth();
+    if (singleMonth) {
+      if (nextDate.monthIndex !== firstMonth.monthIndex || nextDate.year !== firstMonth.year) {
+        changeVisibleMonth(nextDate);
+      }
+      return;
+    }
+
+    const secondMonth = new DateObject(firstMonth).add(1, "month").toFirstOfMonth();
+    if (nextDate < firstMonth) changeVisibleMonth(nextDate);
+    else if (nextDate > secondMonth.toLastOfMonth()) {
+      changeVisibleMonth(new DateObject(nextDate).subtract(1, "month"));
+    }
+  }
+
+  function handleOpenChange(nextOpen: boolean) {
+    if (!nextOpen) {
+      setDraftValue(value.map(toPersianDate));
+      setHoveredDate(null);
+      setSelectionMode("days");
+      setOpen(false);
+      return;
+    }
+    const selectedDate = value[0] ? toPersianDate(value[0]) : getToday();
+    setDraftValue(value.map(toPersianDate));
+    setFocusedDate(selectedDate);
+    setVisibleMonth(new DateObject(selectedDate).toFirstOfMonth());
+    setHoveredDate(null);
+    setSelectionMode("days");
+    setOpen(true);
+  }
+
+  return (
+    <DialogPrimitive.Root open={open} onOpenChange={handleOpenChange}>
+      <DialogPrimitive.Trigger asChild>
+        <button
+          id="event-date-range"
+          type="button"
+          disabled={disabled}
+          aria-label={selectedLabel ? `تاریخ برگزاری: ${selectedLabel}` : "انتخاب بازه زمانی"}
+          aria-haspopup="dialog"
+          aria-expanded={open}
+          className="flex h-10 w-full items-center justify-between gap-3 rounded-md border border-input bg-background px-3 text-right text-sm text-muted-foreground transition-colors hover:bg-muted/40 disabled:cursor-not-allowed disabled:opacity-50"
+        >
+          <span dir="rtl" className={selectedLabel ? "text-foreground" : "text-muted-foreground"}>
+            {selectedLabel || "انتخاب بازه زمانی"}
+          </span>
+          <CalendarDays aria-hidden="true" className="size-4 shrink-0" />
+        </button>
+      </DialogPrimitive.Trigger>
+
+      <DialogPrimitive.Portal>
+        <DialogPrimitive.Overlay className="event-range-modal-overlay" />
+        <DialogPrimitive.Content
+          className={`event-date-range-modal${compact ? " is-compact" : ""}`}
+          onOpenAutoFocus={(event) => event.preventDefault()}
+        >
+          <DialogPrimitive.Title className="sr-only">انتخاب بازه زمانی</DialogPrimitive.Title>
+          <div className={`event-range-calendars${singleMonth ? " is-single-month" : ""}`} dir="rtl" ref={calendarRef}>
+            <CalendarMonth
+              month={visibleMonth}
+              action={singleMonth ? "both" : "right"}
+              selectedDates={draftValue}
+              range={selectedRange}
+              hoveredDate={hoveredDate}
+              focusedDate={focusedDate}
+              today={today}
+              onSelect={handleSelect}
+              onNavigate={shiftVisibleMonths}
+              onHover={setHoveredDate}
+              onFocusDate={setFocusedDate}
+              onKeyDown={handleKeyDown}
+              selectionMode={singleMonth ? selectionMode : "days"}
+              yearPageStart={yearPageStart}
+              onOpenMonthPicker={singleMonth ? showMonthPicker : undefined}
+              onOpenYearPicker={singleMonth ? showYearPicker : undefined}
+              onSelectionNavigate={singleMonth ? navigateSelection : undefined}
+              onSelectYear={singleMonth ? selectYear : undefined}
+              onSelectMonth={singleMonth ? selectMonth : undefined}
+            />
+            {!singleMonth ? (
+              <CalendarMonth
+                month={followingMonth}
+                action="left"
+                selectedDates={draftValue}
+                range={selectedRange}
+                hoveredDate={hoveredDate}
+                focusedDate={focusedDate}
+                today={today}
+                onSelect={handleSelect}
+                onNavigate={shiftVisibleMonths}
+                onHover={setHoveredDate}
+                onFocusDate={setFocusedDate}
+                onKeyDown={handleKeyDown}
+              />
+            ) : null}
+          </div>
+          <div className="event-range-actions" dir="rtl">
+            <button type="button" className="event-range-save" disabled={!canSave} onClick={handleSave}>
+              ذخیره
+            </button>
+            <button
+              type="button"
+              className="event-range-clear"
+              disabled={draftValue.length === 0}
+              onClick={() => {
+                setDraftValue([]);
+                setHoveredDate(null);
+                setFocusedDate(today);
+              }}
+            >
+              پاک‌کردن
+            </button>
+          </div>
+        </DialogPrimitive.Content>
+      </DialogPrimitive.Portal>
+    </DialogPrimitive.Root>
+  );
+}

src/components/events/EventFilters.tsx

@@ -0,0 +1,222 @@
+"use client";
+
+import { useEffect, useMemo, useState } from "react";
+import DateObject from "react-date-object";
+import persian from "react-date-object/calendars/persian";
+import persian_fa from "react-date-object/locales/persian_fa";
+import { RotateCcw } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { EventDateRangePicker } from "@/components/events/EventDateRangePicker";
+import { Label } from "@/components/ui/label";
+import { RadioGroup, RadioGroupItem } from "@/components/ui/radio-group";
+import { Slider } from "@/components/ui/slider";
+import { Switch } from "@/components/ui/switch";
+import { formatNumberPersian } from "@/lib/utils";
+import type { EventCatalogFilters, EventCatalogState, EventCatalogType } from "@/lib/event-catalog";
+
+const stateOptions: { value: EventCatalogState; label: string }[] = [
+  { value: "all", label: "همه" },
+  { value: "completed", label: "برگزار شده" },
+  { value: "upcoming", label: "به‌زودی" },
+  { value: "open", label: "درحال برگزاری" },
+];
+
+const typeOptions: { value: EventCatalogType; label: string }[] = [
+  { value: "all", label: "همه" },
+  { value: "online", label: "آنلاین" },
+  { value: "on_site", label: "حضوری" },
+  { value: "hybrid", label: "آنلاین/حضوری" },
+];
+
+function fromApiDate(value: string) {
+  if (!value) return null;
+  const [year, month, day] = value.split("-").map(Number);
+  if (!year || !month || !day) return null;
+  return new DateObject({
+    date: new Date(year, month - 1, day),
+    calendar: persian,
+    locale: persian_fa,
+  });
+}
+
+function toApiDate(value: DateObject) {
+  const date = value.toDate();
+  return `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, "0")}-${String(date.getDate()).padStart(2, "0")}`;
+}
+
+function getSliderStep(maximum: number) {
+  if (maximum <= 0) return 1;
+  return Math.max(10000, Math.ceil(maximum / 100 / 10000) * 10000);
+}
+
+function FilterSection({ title, children }: { title: string; children: React.ReactNode }) {
+  return (
+    <section className="border-b border-border py-5 first:pt-0 last:border-b-0 last:pb-0">
+      <h3 className="mb-3 text-sm font-semibold">{title}</h3>
+      {children}
+    </section>
+  );
+}
+
+export function EventFilters({
+  filters,
+  priceCeiling,
+  onChange,
+  onReset,
+  disabled = false,
+  showHeader = true,
+  compactCalendar = false,
+}: {
+  filters: EventCatalogFilters;
+  priceCeiling: number;
+  onChange: (patch: Partial<EventCatalogFilters>) => void;
+  onReset: () => void;
+  disabled?: boolean;
+  showHeader?: boolean;
+  compactCalendar?: boolean;
+}) {
+  const rangeValue = useMemo(() => {
+    const from = fromApiDate(filters.dateFrom);
+    const to = fromApiDate(filters.dateTo);
+    return from && to ? [from, to] : [];
+  }, [filters.dateFrom, filters.dateTo]);
+  const sliderMax = Math.max(priceCeiling, 1);
+  const appliedSliderValues = useMemo(
+    () => priceCeiling > 0
+      ? [Math.min(filters.priceMin, priceCeiling), Math.min(filters.priceMax, priceCeiling)]
+      : [0, 0],
+    [filters.priceMin, filters.priceMax, priceCeiling],
+  );
+  const [sliderValues, setSliderValues] = useState(appliedSliderValues);
+
+  useEffect(() => {
+    setSliderValues(appliedSliderValues);
+  }, [appliedSliderValues]);
+
+  return (
+    <div className="space-y-0" aria-busy={disabled}>
+      {showHeader ? (
+        <div className="mb-4 flex items-center justify-between">
+          <h2 className="text-base font-semibold">فیلترها</h2>
+          <Button type="button" variant="ghost" size="sm" onClick={onReset} disabled={disabled}>
+            <RotateCcw aria-hidden="true" className="size-4" />
+            پاک‌کردن
+          </Button>
+        </div>
+      ) : null}
+
+      <FilterSection title="وضعیت">
+        <RadioGroup
+          value={filters.state}
+          disabled={disabled}
+          onValueChange={(value) => onChange({ state: value as EventCatalogState })}
+          className="gap-1"
+          aria-label="وضعیت رویداد"
+          dir="rtl"
+        >
+          {stateOptions.map((option) => (
+            <label
+              key={option.value}
+              htmlFor={`event-state-${option.value}`}
+              dir="rtl"
+              className="flex cursor-pointer items-center gap-3 rounded-md px-2 py-2 text-sm transition-colors hover:bg-muted/70"
+            >
+              <RadioGroupItem id={`event-state-${option.value}`} value={option.value} />
+              <span>{option.label}</span>
+            </label>
+          ))}
+        </RadioGroup>
+      </FilterSection>
+
+      <FilterSection title="نوع برگزاری">
+        <RadioGroup
+          value={filters.eventType}
+          disabled={disabled}
+          onValueChange={(value) => onChange({ eventType: value as EventCatalogType })}
+          className="gap-1"
+          aria-label="نوع برگزاری"
+          dir="rtl"
+        >
+          {typeOptions.map((option) => (
+            <label
+              key={option.value}
+              htmlFor={`event-type-${option.value}`}
+              dir="rtl"
+              className="flex cursor-pointer items-center gap-3 rounded-md px-2 py-2 text-sm transition-colors hover:bg-muted/70"
+            >
+              <RadioGroupItem id={`event-type-${option.value}`} value={option.value} />
+              <span>{option.label}</span>
+            </label>
+          ))}
+        </RadioGroup>
+      </FilterSection>
+
+      <FilterSection title="تاریخ برگزاری">
+        <div>
+          <Label htmlFor="event-date-range" className="sr-only">انتخاب بازه زمانی</Label>
+          <EventDateRangePicker
+            value={rangeValue}
+            disabled={disabled}
+            compact={compactCalendar}
+            onChange={(dates) => {
+              if (dates.length === 2) {
+                const [start, end] = dates;
+                const from = toApiDate(start);
+                const to = toApiDate(end);
+                onChange({ dateFrom: from <= to ? from : to, dateTo: from <= to ? to : from });
+              } else if (dates.length === 0) {
+                onChange({ dateFrom: "", dateTo: "" });
+              }
+            }}
+          />
+        </div>
+      </FilterSection>
+
+      <FilterSection title="هزینه‌ ثبت‌نام">
+        <div className={filters.freeOnly ? "space-y-4 opacity-50" : "space-y-4"}>
+          <div dir="ltr" className="px-2 pt-1">
+            <Slider
+              min={0}
+              max={sliderMax}
+              step={getSliderStep(priceCeiling)}
+              value={sliderValues}
+              disabled={disabled || filters.freeOnly || priceCeiling <= 0}
+              onValueChange={setSliderValues}
+              onValueCommit={(values) => {
+                const [priceMin, priceMax] = values;
+                onChange({ priceMin, priceMax });
+              }}
+              aria-label="محدودهٔ قیمت رویدادها به تومان"
+            />
+          </div>
+          <div dir="ltr" className="flex items-start justify-between gap-3 text-xs text-muted-foreground">
+            <span dir="rtl" className="inline-flex items-center gap-1">
+              <bdi>{formatNumberPersian(sliderValues[0])}</bdi>
+              <span>تومان</span>
+            </span>
+            <span dir="rtl" className="inline-flex items-center gap-1">
+              <bdi>{formatNumberPersian(sliderValues[1])}</bdi>
+              <span>تومان</span>
+            </span>
+          </div>
+          {priceCeiling <= 0 ? <p className="text-xs text-muted-foreground">رویداد پولی برای فیلترکردن وجود ندارد.</p> : null}
+        </div>
+      </FilterSection>
+
+      <section aria-label="فیلتر هزینهٔ ثبت‌نام" className="pt-5">
+        <div className="flex items-center justify-between gap-4">
+          <Label htmlFor="event-free-only" className="cursor-pointer text-sm">رویداد‌های رایگان</Label>
+          <Switch
+            id="event-free-only"
+            dir="rtl"
+            className="[&[data-state=checked]>span]:-translate-x-5"
+            checked={filters.freeOnly}
+            disabled={disabled}
+            onCheckedChange={(checked) => onChange({ freeOnly: checked })}
+            aria-label="رویداد‌های رایگان"
+          />
+        </div>
+      </section>
+    </div>
+  );
+}

src/components/events/EventFiltersDrawer.tsx

@@ -0,0 +1,117 @@
+"use client";
+
+import { RotateCcw, SlidersHorizontal } from "lucide-react";
+import { useEffect, useState } from "react";
+import { Button } from "@/components/ui/button";
+import {
+  Sheet,
+  SheetContent,
+  SheetDescription,
+  SheetHeader,
+  SheetTitle,
+  SheetTrigger,
+} from "@/components/ui/sheet";
+import { EventFilters } from "@/components/events/EventFilters";
+import type { EventCatalogFilters } from "@/lib/event-catalog";
+import { formatNumberPersian } from "@/lib/utils";
+
+export function EventFiltersDrawer({
+  open,
+  filters,
+  priceCeiling,
+  activeFilterCount,
+  disabled,
+  onOpenChange,
+  onChange,
+  onReset,
+  onApply,
+}: {
+  open: boolean;
+  filters: EventCatalogFilters;
+  priceCeiling: number;
+  activeFilterCount: number;
+  disabled: boolean;
+  onOpenChange: (open: boolean) => void;
+  onChange: (patch: Partial<EventCatalogFilters>) => void;
+  onReset: () => void;
+  onApply: () => void;
+}) {
+  const [isMobileViewport, setIsMobileViewport] = useState(true);
+
+  useEffect(() => {
+    const mediaQuery = window.matchMedia("(max-width: 639px)");
+    const updateViewport = () => setIsMobileViewport(mediaQuery.matches);
+
+    updateViewport();
+    mediaQuery.addEventListener("change", updateViewport);
+    return () => mediaQuery.removeEventListener("change", updateViewport);
+  }, []);
+
+  return (
+    <Sheet open={open} onOpenChange={(nextOpen) => { if (!disabled) onOpenChange(nextOpen); }}>
+      <SheetTrigger asChild>
+        <Button
+          type="button"
+          variant="outline"
+          className="relative h-11 shrink-0 gap-2 px-3"
+          disabled={disabled}
+          aria-label={activeFilterCount ? `فیلترها، ${formatNumberPersian(activeFilterCount)} مورد انتخاب‌شده` : "فیلترها"}
+        >
+          <SlidersHorizontal aria-hidden="true" className="size-4" />
+          فیلترها
+          {activeFilterCount > 0 ? (
+            <span
+              aria-hidden="true"
+              className="absolute -left-1.5 -top-1.5 inline-flex size-5 items-center justify-center rounded-full border-2 border-background bg-primary text-[0.625rem] font-bold leading-none text-primary-foreground"
+            >
+              {formatNumberPersian(activeFilterCount)}
+            </span>
+          ) : null}
+        </Button>
+      </SheetTrigger>
+      <SheetContent
+        side={isMobileViewport ? "bottom" : "right"}
+        className={`event-filters-sheet flex flex-col gap-0 p-0 ${
+          isMobileViewport
+            ? "inset-x-0 bottom-0 top-auto h-[min(88dvh,52rem)] w-full max-w-none rounded-t-2xl border-x-0 border-b-0"
+            : "inset-y-0 bottom-auto left-auto right-0 top-0 h-full !w-[min(92vw,26rem)] !max-w-none rounded-none border-l border-r-0 border-t-0"
+        }`}
+        aria-describedby="event-filters-description"
+      >
+        <SheetHeader className="border-b border-border px-5 py-4 !pr-14 text-right">
+          <SheetTitle className="text-right">فیلترهای رویدادها</SheetTitle>
+          <SheetDescription id="event-filters-description" className="text-right">
+            پس از انتخاب فیلترهای موردنظر روی دکمه‌ی «اعمال» کلید کنید.
+          </SheetDescription>
+        </SheetHeader>
+        <div className="min-h-0 flex-1 overflow-y-auto px-5 py-5">
+          <EventFilters
+            filters={filters}
+            priceCeiling={priceCeiling}
+            disabled={disabled}
+            onChange={onChange}
+            onReset={onReset}
+            showHeader={false}
+            compactCalendar
+          />
+        </div>
+        <div dir="ltr" className="flex gap-3 border-t border-border bg-background px-5 py-4 pb-[max(1rem,env(safe-area-inset-bottom))]">
+          <Button
+            type="button"
+            dir="rtl"
+            variant="ghost"
+            className="shrink-0 gap-2 text-foreground hover:bg-secondary hover:text-foreground"
+            onClick={onReset}
+            disabled={disabled}
+          >
+            <RotateCcw aria-hidden="true" className="size-4 text-primary" />
+            پاک‌کردن فیلترها
+          </Button>
+          <Button type="button" dir="rtl" className="flex-1" onClick={onApply} disabled={disabled}>
+            اعمال
+          </Button>
+        </div>
+      </SheetContent>
+    </Sheet>
+  );
+}

src/index.css

@@ -125,7 +125,6 @@ All colors MUST be HSL.
 
   body {
     @apply bg-background font-sans text-foreground;
-    min-width: 320px;
   }
 
   :focus-visible {
@@ -175,3 +174,413 @@ html.dark a.home-hero-secondary:focus-visible {
     padding-block: 1.5rem;
   }
 }
+
+.event-range-modal-overlay {
+  position: fixed;
+  z-index: 60;
+  inset: 0;
+  background: hsl(var(--foreground) / 0.16);
+  animation: event-range-fade-in 140ms ease-out;
+}
+
+.event-date-range-modal {
+  position: fixed;
+  z-index: 61;
+  top: 50%;
+  left: 50%;
+  width: min(36rem, calc(100vw - 1.5rem));
+  max-width: calc(100vw - 1.5rem);
+  padding: 0.5rem;
+  overflow: hidden;
+  border: 1px solid hsl(var(--border));
+  border-radius: 0.75rem;
+  color: hsl(var(--popover-foreground));
+  background: hsl(var(--popover));
+  box-shadow: 0 1rem 3rem hsl(var(--foreground) / 0.18);
+  text-align: center;
+  transform: translate(-50%, -50%);
+  animation: event-range-modal-in 160ms ease-out;
+}
+
+@keyframes event-range-fade-in {
+  from { opacity: 0; }
+  to { opacity: 1; }
+}
+
+@keyframes event-range-modal-in {
+  from { opacity: 0; transform: translate(-50%, -48%) scale(0.98); }
+  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
+}
+
+.event-date-range-modal.is-compact {
+  width: min(36rem, calc(100vw - 1rem));
+}
+
+.event-range-calendars {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  align-items: start;
+  direction: rtl;
+}
+
+.event-range-calendars.is-single-month {
+  grid-template-columns: minmax(0, 1fr);
+}
+
+.event-range-month {
+  min-width: 0;
+  padding: 0 0.5rem;
+  direction: rtl;
+}
+
+.event-range-month + .event-range-month {
+  border-inline-start: 1px solid hsl(var(--border));
+}
+
+.event-range-month-header {
+  position: relative;
+  display: flex;
+  height: 2.5rem;
+  align-items: center;
+  justify-content: center;
+  margin-inline: 0.625rem;
+  margin-bottom: 0.375rem;
+}
+
+.event-range-month-title {
+  margin: 0;
+  color: hsl(var(--foreground));
+  font-size: 0.875rem;
+  font-weight: 600;
+  line-height: 1.25rem;
+}
+
+.event-range-month-title-picker {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.5rem;
+}
+
+.event-range-month-title-picker button {
+  padding: 0.125rem 0.25rem;
+  border: 0;
+  border-radius: 0.25rem;
+  color: inherit;
+  background: transparent;
+  font: inherit;
+  cursor: pointer;
+}
+
+.event-range-month-title-picker button:hover,
+.event-range-month-title-picker button.is-active {
+  color: hsl(var(--primary));
+}
+
+.event-range-month-title-picker button:focus-visible {
+  outline: 2px solid hsl(var(--ring));
+  outline-offset: 2px;
+}
+
+.event-range-calendar-body.is-months,
+.event-range-calendar-body.is-years {
+  min-height: 17rem;
+  padding-top: 0.5rem;
+}
+
+.event-range-month-choices {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  grid-auto-rows: 2.75rem;
+  align-content: start;
+  gap: 0.5rem 0.375rem;
+}
+
+.event-range-year-choices {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  grid-auto-rows: 2.75rem;
+  align-content: start;
+  gap: 0.5rem 0.375rem;
+}
+
+.event-range-year-choices button,
+.event-range-month-choices button {
+  min-height: 2.5rem;
+  padding-inline: 0.25rem;
+  border: 0;
+  border-radius: 0.375rem;
+  color: hsl(var(--foreground));
+  background: transparent;
+  font: inherit;
+  font-size: 0.75rem;
+  cursor: pointer;
+}
+
+.event-range-year-choices button:hover,
+.event-range-month-choices button:hover {
+  background: hsl(var(--secondary));
+}
+
+.event-range-year-choices button[aria-pressed="true"],
+.event-range-month-choices button[aria-pressed="true"] {
+  color: hsl(var(--primary-foreground));
+  background: hsl(var(--primary));
+}
+
+.event-range-nav {
+  position: absolute;
+  top: 50%;
+  display: inline-flex;
+  width: 2rem;
+  height: 2rem;
+  align-items: center;
+  justify-content: center;
+  border: 0;
+  border-radius: 0.375rem;
+  color: hsl(var(--muted-foreground));
+  background: transparent;
+  transform: translateY(-50%);
+  cursor: pointer;
+}
+
+.event-range-nav:hover {
+  color: hsl(var(--foreground));
+  background: hsl(var(--secondary));
+}
+
+.event-range-nav:focus-visible,
+.event-range-day:focus-visible {
+  outline: 2px solid hsl(var(--ring));
+  outline-offset: 1px;
+}
+
+.event-range-nav svg {
+  width: 1rem;
+  height: 1rem;
+}
+
+.event-range-nav-left {
+  left: 0;
+}
+
+.event-range-nav-right {
+  right: 0;
+}
+
+.event-range-weekdays,
+.event-range-week {
+  display: grid;
+  grid-template-columns: repeat(7, minmax(0, 1fr));
+  direction: rtl;
+}
+
+.event-range-weekdays {
+  height: 1.5rem;
+  align-items: center;
+  color: hsl(var(--muted-foreground));
+  font-size: 0.75rem;
+  font-weight: 500;
+  line-height: 1rem;
+}
+
+.event-range-days {
+  display: flex;
+  flex-direction: column;
+  margin-top: 0.25rem;
+}
+
+.event-range-week {
+  grid-auto-rows: 2.25rem;
+}
+
+.event-range-day,
+.event-range-empty-day {
+  position: relative;
+  display: inline-flex;
+  width: 100%;
+  max-width: 2.25rem;
+  height: 2.25rem;
+  align-items: center;
+  justify-content: center;
+  justify-self: center;
+  border: 0;
+  border-radius: 0;
+  color: hsl(var(--foreground));
+  background: transparent;
+  font: inherit;
+  font-size: 0.8125rem;
+  line-height: 1;
+  font-variant-numeric: tabular-nums;
+}
+
+.event-range-day {
+  cursor: pointer;
+  transition: color 100ms ease, background-color 100ms ease;
+}
+
+.event-range-day:hover,
+.event-range-day.is-hover-preview {
+  border-radius: 0.5rem;
+  color: hsl(var(--foreground));
+  background: hsl(var(--secondary));
+}
+
+.event-range-day.is-in-range {
+  background: hsl(var(--secondary));
+}
+
+.event-range-day.is-range-start {
+  border-radius: 0 0.5rem 0.5rem 0;
+}
+
+.event-range-day.is-range-end {
+  border-radius: 0.5rem 0 0 0.5rem;
+}
+
+.event-range-day.is-range-start.is-range-end,
+.event-range-day.is-range-start:not(.is-in-range) {
+  border-radius: 0.5rem;
+}
+
+.event-range-day.is-range-start,
+.event-range-day.is-range-end {
+  z-index: 1;
+  color: hsl(var(--primary-foreground));
+  background: hsl(var(--primary));
+}
+
+.event-range-day.is-today:not(.is-range-start):not(.is-range-end)::after {
+  position: absolute;
+  bottom: 0.1875rem;
+  left: 50%;
+  width: 0.1875rem;
+  height: 0.1875rem;
+  border-radius: 50%;
+  background: hsl(var(--primary));
+  content: "";
+  transform: translateX(-50%);
+}
+
+.event-range-actions {
+  display: flex;
+  flex-direction: row-reverse;
+  align-items: center;
+  justify-content: flex-start;
+  gap: 0.5rem;
+  margin-top: 0.5rem;
+  padding-top: 0.5rem;
+  border-top: 1px solid hsl(var(--border));
+}
+
+.event-range-save,
+.event-range-clear {
+  display: inline-flex;
+  min-width: 5.25rem;
+  height: 2.25rem;
+  align-items: center;
+  justify-content: center;
+  padding-inline: 0.75rem;
+  border: 1px solid transparent;
+  border-radius: 0.375rem;
+  font: inherit;
+  font-size: 0.8125rem;
+  font-weight: 600;
+  transition: color 100ms ease, background-color 100ms ease, border-color 100ms ease;
+  cursor: pointer;
+}
+
+.event-range-save {
+  color: hsl(var(--primary-foreground));
+  background: hsl(var(--primary));
+}
+
+.event-range-save:hover:not(:disabled) {
+  filter: brightness(0.96);
+}
+
+.event-range-clear {
+  border-color: hsl(var(--border));
+  color: hsl(var(--foreground));
+  background: hsl(var(--background));
+}
+
+.event-range-clear:hover:not(:disabled) {
+  background: hsl(var(--secondary));
+}
+
+.event-range-save:focus-visible,
+.event-range-clear:focus-visible {
+  outline: 2px solid hsl(var(--ring));
+  outline-offset: 1px;
+}
+
+.event-range-save:disabled,
+.event-range-clear:disabled {
+  cursor: not-allowed;
+  opacity: 0.45;
+}
+
+.event-date-range-modal.is-compact .event-range-month {
+  padding-inline: 0.375rem;
+}
+
+.event-date-range-modal.is-compact .event-range-week {
+  grid-auto-rows: auto;
+}
+
+.event-date-range-modal.is-compact .event-range-day,
+.event-date-range-modal.is-compact .event-range-empty-day {
+  max-width: none;
+  height: auto;
+  aspect-ratio: 1;
+  font-size: clamp(0.75rem, 3vw, 0.875rem);
+}
+
+@media (max-width: 640px) {
+  .event-date-range-modal,
+  .event-date-range-modal.is-compact {
+    width: min(22rem, calc(100vw - 1.5rem));
+    max-width: calc(100vw - 1.5rem);
+  }
+}
+
+@media (max-width: 450px) {
+  .event-date-range-modal {
+    padding: 0.375rem;
+  }
+
+  .event-date-range-modal .event-range-month {
+    padding-inline: 0.25rem;
+  }
+
+  .event-range-month-header {
+    height: 2.25rem;
+  }
+
+  .event-range-month-title {
+    font-size: 0.75rem;
+  }
+
+  .event-range-weekdays {
+    font-size: 0.75rem;
+  }
+
+  .event-range-week {
+    grid-auto-rows: 2.5rem;
+  }
+
+  .event-range-day,
+  .event-range-empty-day {
+    max-width: 2.5rem;
+    height: 2.5rem;
+    font-size: 0.8125rem;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .event-range-modal-overlay,
+  .event-date-range-modal {
+    animation: none;
+  }
+}

src/lib/api.ts

@@ -846,6 +846,33 @@ class ApiClient {
     return this.request<Types.EventListItemSchema[]>(url, { method: 'GET' });
   }
 
+  async browseEvents(params: {
+    state?: 'all' | 'completed' | 'upcoming' | 'open';
+    event_type?: 'online' | 'on_site' | 'hybrid';
+    search?: string;
+    date_from?: string;
+    date_to?: string;
+    price_min?: number;
+    price_max?: number;
+    free_only?: boolean;
+    page?: number;
+  } = {}) {
+    const query = new URLSearchParams();
+    if (params.state) query.set('state', params.state);
+    if (params.event_type) query.set('event_type', params.event_type);
+    if (params.search?.trim()) query.set('search', params.search.trim());
+    if (params.date_from) query.set('date_from', params.date_from);
+    if (params.date_to) query.set('date_to', params.date_to);
+    if (params.price_min != null) query.set('price_min', String(params.price_min));
+    if (params.price_max != null) query.set('price_max', String(params.price_max));
+    if (params.free_only) query.set('free_only', 'true');
+    if (params.page != null) query.set('page', String(params.page));
+    return this.request<Types.EventBrowsePageSchema>(
+      `/api/events/browse/${query.size ? `?${query.toString()}` : ''}`,
+      { method: 'GET' },
+    );
+  }
+
   async getEventBySlug(slug: string) {
     return this.request<Types.EventDetailSchema>(`/api/events/slug/${encodeURIComponent(slug)}`, { method: 'GET' });
   }

src/lib/event-catalog.ts

@@ -0,0 +1,106 @@
+export const EVENT_PAGE_SIZE = 12;
+
+export type EventCatalogState = "all" | "completed" | "upcoming" | "open";
+export type EventCatalogType = "all" | "online" | "on_site" | "hybrid";
+
+export type EventCatalogFilters = {
+  search: string;
+  state: EventCatalogState;
+  eventType: EventCatalogType;
+  dateFrom: string;
+  dateTo: string;
+  priceMin: number;
+  priceMax: number;
+  freeOnly: boolean;
+  page: number;
+};
+
+export type EventCatalogItem = {
+  status?: string | null;
+  event_type?: string | null;
+  address?: string | null;
+  start_time?: string | null;
+  end_time?: string | null;
+  registration_start_date?: string | null;
+  registration_end_date?: string | null;
+  capacity?: number | null;
+  registration_count?: number | null;
+};
+
+const states = new Set<EventCatalogState>(["all", "completed", "upcoming", "open"]);
+const eventTypes = new Set<EventCatalogType>(["all", "online", "on_site", "hybrid"]);
+
+export function getPriceCeiling(maximumPrice: number | null | undefined) {
+  const price = Number(maximumPrice ?? 0);
+  if (!Number.isFinite(price) || price <= 0) return 0;
+  return Math.ceil(price / 1_000_000) * 1_000_000;
+}
+
+function isIsoDate(value: string) {
+  if (!/^\d{4}-\d{2}-\d{2}$/.test(value)) return false;
+  const date = new Date(`${value}T00:00:00.000Z`);
+  return Number.isFinite(date.getTime()) && date.toISOString().slice(0, 10) === value;
+}
+
+function nonnegativeInteger(value: string | null, fallback: number) {
+  if (value === null || !/^\d+$/.test(value)) return fallback;
+  const parsed = Number(value);
+  return Number.isSafeInteger(parsed) ? parsed : fallback;
+}
+
+export function parseEventCatalogParams(
+  params: URLSearchParams,
+  priceCeiling: number,
+): EventCatalogFilters {
+  const stateValue = params.get("state") as EventCatalogState | null;
+  const typeValue = params.get("event_type") as EventCatalogType | null;
+  const dateFromValue = params.get("date_from") ?? "";
+  const dateToValue = params.get("date_to") ?? "";
+  const hasValidRange = isIsoDate(dateFromValue)
+    && isIsoDate(dateToValue)
+    && dateFromValue <= dateToValue;
+  const priceMin = nonnegativeInteger(params.get("price_min"), 0);
+  const priceMax = nonnegativeInteger(params.get("price_max"), priceCeiling);
+  const hasValidPriceRange = priceMin <= priceMax;
+  const page = nonnegativeInteger(params.get("page"), 1);
+
+  return {
+    search: (params.get("search") ?? "").trim(),
+    state: stateValue && states.has(stateValue) ? stateValue : "all",
+    eventType: typeValue && eventTypes.has(typeValue) ? typeValue : "all",
+    dateFrom: hasValidRange ? dateFromValue : "",
+    dateTo: hasValidRange ? dateToValue : "",
+    priceMin: hasValidPriceRange ? priceMin : 0,
+    priceMax: hasValidPriceRange ? Math.min(priceMax, priceCeiling) : priceCeiling,
+    freeOnly: ["true", "1"].includes((params.get("free_only") ?? "").toLowerCase()),
+    page: page > 0 ? page : 1,
+  };
+}
+
+export function serializeEventCatalogParams(
+  filters: EventCatalogFilters,
+  priceCeiling = Number.POSITIVE_INFINITY,
+) {
+  const params = new URLSearchParams();
+  if (filters.search.trim()) params.set("search", filters.search.trim());
+  if (filters.state !== "all") params.set("state", filters.state);
+  if (filters.eventType !== "all") params.set("event_type", filters.eventType);
+  if (filters.dateFrom && filters.dateTo) {
+    params.set("date_from", filters.dateFrom);
+    params.set("date_to", filters.dateTo);
+  }
+  if (!filters.freeOnly && (filters.priceMin > 0 || filters.priceMax < priceCeiling)) {
+    params.set("price_min", String(filters.priceMin));
+    params.set("price_max", String(filters.priceMax));
+  }
+  if (filters.freeOnly) params.set("free_only", "true");
+  if (filters.page > 1) params.set("page", String(filters.page));
+  return params;
+}
+
+export function getEventLocationLabel(event: Pick<EventCatalogItem, "event_type" | "address">) {
+  if (event.event_type === "online") return "برگزاری آنلاین";
+  const address = event.address?.trim();
+  if (address) return address;
+  return "محل برگزاری اعلام نشده";
+}

src/lib/event-ui.ts

@@ -0,0 +1,167 @@
+export type EventAvailabilityInput = {
+  status?: string | null;
+  registration_start_date?: string | null;
+  registration_end_date?: string | null;
+  start_time?: string | null;
+  end_time?: string | null;
+  capacity?: number | null;
+  registration_count?: number | null;
+};
+
+export function getEventPath(event: { id: number; slug?: string | null }) {
+  const segment = event.slug?.trim() || String(event.id);
+  return `/events/${encodeURIComponent(segment)}`;
+}
+
+export type EventRegistrationState =
+  | "open"
+  | "not_started"
+  | "closed"
+  | "full"
+  | "unavailable";
+
+function timestamp(value?: string | null) {
+  if (!value) return null;
+  const parsed = new Date(value).getTime();
+  return Number.isFinite(parsed) ? parsed : null;
+}
+
+export function getEventRegistrationState(
+  event: EventAvailabilityInput,
+  now = Date.now(),
+): { state: EventRegistrationState; remaining: number | null } {
+  if (event.status !== "published") {
+    return { state: "unavailable", remaining: null };
+  }
+
+  const endsAt = timestamp(event.registration_end_date);
+  if (endsAt !== null && now > endsAt) {
+    return { state: "closed", remaining: getRemainingCapacity(event) };
+  }
+
+  const startsAt = timestamp(event.registration_start_date);
+  if (startsAt !== null && now < startsAt) {
+    return { state: "not_started", remaining: getRemainingCapacity(event) };
+  }
+
+  const remaining = getRemainingCapacity(event);
+  if (remaining !== null && remaining <= 0) {
+    return { state: "full", remaining: 0 };
+  }
+
+  return { state: "open", remaining };
+}
+
+function getRemainingCapacity(event: EventAvailabilityInput) {
+  if (event.capacity == null || !Number.isFinite(Number(event.capacity))) {
+    return null;
+  }
+
+  const used = Number.isFinite(Number(event.registration_count))
+    ? Number(event.registration_count)
+    : 0;
+  return Math.max(0, Number(event.capacity) - used);
+}
+
+export function getEventCardState(
+  event: EventAvailabilityInput,
+  now = Date.now(),
+): "past" | "full" | "upcoming" {
+  const endsAt = timestamp(event.end_time);
+  if (event.status === "completed" || (endsAt !== null && endsAt < now)) {
+    return "past";
+  }
+
+  if (getEventRegistrationState(event, now).state === "full") {
+    return "full";
+  }
+
+  return "upcoming";
+}
+
+export function getEventBrowseLabel(event: EventAvailabilityInput, now = Date.now()) {
+  if (getEventCardState(event, now) === "past") return "برگزار شده";
+  if (getEventRegistrationState(event, now).state === "open") return "درحال برگزاری";
+  const startsAt = timestamp(event.start_time);
+  if (startsAt !== null && startsAt <= now) return "درحال برگزاری";
+  return "به‌زودی";
+}
+
+export function getEventRegistrationMessage(event: EventAvailabilityInput, now = Date.now()) {
+  if (getEventCardState(event, now) === "past") return "این رویداد برگزار شده است";
+  const registration = getEventRegistrationState(event, now);
+  if (registration.state === "not_started") return "ثبت‌نام هنوز آغاز نشده است";
+  if (registration.state === "closed") return "زمان ثبت‌نام به پایان رسیده است";
+  if (registration.state === "full") return "ظرفیت ثبت‌نام تکمیل شده است";
+  if (registration.state === "unavailable") return "امکان ثبت‌نام وجود ندارد";
+  if (registration.remaining === null) return "ثبت‌نام در حال انجام است";
+  return `${registration.remaining.toLocaleString("fa-IR")} نفر ظرفیت باقی‌مانده`;
+}
+
+export type RegistrationErrorKind =
+  | "already_registered"
+  | "not_started"
+  | "closed"
+  | "full"
+  | "unknown";
+
+function normalizeApiMessage(message: unknown) {
+  return String(message ?? "")
+    .replace(/[يى]/g, "ی")
+    .replace(/\u200c/g, " ")
+    .replace(/\s+/g, " ")
+    .trim()
+    .toLocaleLowerCase();
+}
+
+export function classifyRegistrationError(message: unknown): RegistrationErrorKind {
+  const normalized = normalizeApiMessage(message);
+  if (normalized.includes("already registered") || normalized.includes("قبلا در این ایونت ثبت نام کرده اید")) {
+    return "already_registered";
+  }
+  if (normalized.includes("زمان ثبت نام هنوز آغاز نشده") || normalized.includes("registration has not started")) {
+    return "not_started";
+  }
+  if (normalized.includes("مهلت ثبت نام به پایان رسیده") || normalized.includes("registration period has ended")) {
+    return "closed";
+  }
+  if (normalized.includes("ظرفیت شرکت کنندگان تکمیل است") || normalized.includes("event is full")) {
+    return "full";
+  }
+  return "unknown";
+}
+
+export type PaymentOutcome = "paid" | "pending" | "failed" | "canceled" | "unknown";
+
+export function getPaymentOutcome(status: unknown): PaymentOutcome {
+  const normalized = normalizeApiMessage(status);
+  if (["success", "paid", "ok", "پرداخت شده", "تایید شده"].includes(normalized)) {
+    return "paid";
+  }
+  if (["pending", "initiated", "init", "در انتظار", "در حال پردازش"].includes(normalized)) {
+    return "pending";
+  }
+  if (["canceled", "cancelled", "لغو شده"].includes(normalized)) {
+    return "canceled";
+  }
+  if (["failed", "failure", "ناموفق"].includes(normalized)) {
+    return "failed";
+  }
+  return "unknown";
+}
+
+export type RegistrationOutcome = "confirmed" | "pending" | "canceled" | "unknown";
+
+export function getRegistrationOutcome(status: unknown): RegistrationOutcome {
+  const normalized = normalizeApiMessage(status);
+  if (["confirmed", "attended", "approved", "تایید شده"].includes(normalized)) {
+    return "confirmed";
+  }
+  if (["pending", "در انتظار"].includes(normalized)) {
+    return "pending";
+  }
+  if (["canceled", "cancelled", "لغو شده"].includes(normalized)) {
+    return "canceled";
+  }
+  return "unknown";
+}

src/lib/public-api.ts

@@ -136,6 +136,33 @@ export async function getPublicEvents(options?: { search?: string; limit?: numbe
   });
 }
 
+export async function getPublicEventBrowsePage(options: {
+  state: 'all' | 'completed' | 'upcoming' | 'open';
+  eventType: 'all' | 'online' | 'on_site' | 'hybrid';
+  search: string;
+  dateFrom: string;
+  dateTo: string;
+  priceMin?: number;
+  priceMax?: number;
+  freeOnly: boolean;
+  page: number;
+}) {
+  return requestJson<Types.EventBrowsePageSchema>('/api/events/browse/', {
+    params: {
+      state: options.state,
+      ...(options.eventType !== 'all' ? { event_type: options.eventType } : {}),
+      ...(options.search.trim() ? { search: options.search.trim() } : {}),
+      ...(options.dateFrom ? { date_from: options.dateFrom } : {}),
+      ...(options.dateTo ? { date_to: options.dateTo } : {}),
+      ...(options.priceMin != null ? { price_min: options.priceMin } : {}),
+      ...(options.priceMax != null ? { price_max: options.priceMax } : {}),
+      ...(options.freeOnly ? { free_only: true } : {}),
+      page: options.page,
+    },
+    revalidate: 0,
+  });
+}
+
 export async function getPublicEventBySlug(slug: string) {
   return requestJson<Types.EventDetailSchema>(
     `/api/events/slug/${encodeURIComponent(slug)}`,

src/lib/types.ts

@@ -622,7 +622,7 @@ export interface BlogFiltersSchema {
 }
 
 // Events Types
-export interface EventListItemSchema {
+  export interface EventListItemSchema {
   id: number;
   title: string;
   slug: string;
@@ -645,8 +645,17 @@ export interface EventListItemSchema {
   status_label?: string;
   event_type_label?: string;
   registration_count: number;
-  created_at: string;
+    created_at: string;
-}
+  }
+
+  export interface EventBrowsePageSchema {
+    count: number;
+    page: number;
+    page_size: number;
+    total_pages: number;
+    price_ceiling: number;
+    results: EventListItemSchema[];
+  }
 
 export interface EventGalleryItem {
   id: number;

src/views/Events.tsx

@@ -1,176 +1,374 @@
 "use client";
 
-import { useCallback, useEffect, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
-import { Link, useLocation, useNavigate } from "@/lib/router";
+import Image from "next/image";
-import { api } from "@/lib/api";
+import { Search } from "lucide-react";
-import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
-import { Badge } from "@/components/ui/badge";
-import { Input } from "@/components/ui/input";
 import { Button } from "@/components/ui/button";
-import ProgressiveImage from "@/components/ProgressiveImage";
+import { Input } from "@/components/ui/input";
-import type * as Types from "@/lib/types";
+import { EventCard } from "@/components/events/EventCard";
-import { formatJalali, formatNumberPersian, formatToman, getEventCardImageUrl } from "@/lib/utils";
+import { EventFiltersDrawer } from "@/components/events/EventFiltersDrawer";
+import type { EventBrowsePageSchema } from "@/lib/types";
+import { api } from "@/lib/api";
+import { formatNumberPersian } from "@/lib/utils";
 import type { EventsContentPage } from "@/lib/content-cms";
+import {
+  EVENT_PAGE_SIZE,
+  parseEventCatalogParams,
+  serializeEventCatalogParams,
+  type EventCatalogFilters,
+} from "@/lib/event-catalog";
 
-type EventsProps = {
+function defaultFilters(search: string, priceCeiling: number): EventCatalogFilters {
-  content: EventsContentPage;
+  return {
-  initialEvents?: Types.EventListItemSchema[];
+    search,
-  initialSearch?: string;
+    state: "all",
-};
+    eventType: "all",
-
+    dateFrom: "",
-function labelPrice(event: Types.EventListItemSchema) {
+    dateTo: "",
-  const price = Number(event?.price ?? 0);
+    priceMin: 0,
-  return price <= 0 ? "رایگان" : formatToman(price);
+    priceMax: priceCeiling,
+    freeOnly: false,
+    page: 1,
+  };
 }
 
-function modeFa(eventType: Types.EventListItemSchema["event_type"]) {
+function EventCardSkeleton() {
-  return eventType === "online" ? "آنلاین" : "حضوری";
+  return (
+    <article aria-hidden="true" className="flex h-full min-w-0 flex-col overflow-hidden rounded-xl border border-border bg-card">
+      <div className="aspect-video w-full shrink-0 animate-pulse bg-muted motion-reduce:animate-none" />
+      <div className="flex flex-1 flex-col p-3 md:p-4">
+        <div className="ms-auto h-5 w-4/5 animate-pulse rounded bg-muted motion-reduce:animate-none" />
+        <div className="mt-3 grid gap-3 md:mt-4">
+          {["w-32", "w-40", "w-24", "w-36"].map((width) => (
+            <div key={width} className="flex items-center justify-end gap-2">
+              <div className={`h-3.5 ${width} animate-pulse rounded bg-muted motion-reduce:animate-none`} />
+              <div className="size-4 animate-pulse rounded-full bg-muted motion-reduce:animate-none" />
+            </div>
+          ))}
+        </div>
+        <div className="mt-auto min-h-10 w-full animate-pulse rounded-md bg-muted pt-2 md:mt-5 md:min-h-11 motion-reduce:animate-none" />
+      </div>
+    </article>
+  );
 }
 
-function spotsLeft(event: Types.EventListItemSchema) {
+function EventResultsSkeleton() {
-  const cap = Number(event.capacity);
+  return (
-  const used = Number(event.registration_count);
+    <div role="status" aria-live="polite" className="space-y-3">
-  return cap - used;
+      <span className="sr-only">در حال اعمال فیلترها و دریافت رویدادها…</span>
+      <div aria-hidden="true" className="grid grid-cols-1 gap-3 sm:grid-cols-2 sm:gap-4 xl:grid-cols-3">
+        {Array.from({ length: 6 }, (_, index) => <EventCardSkeleton key={index} />)}
+      </div>
+    </div>
+  );
 }
 
-function isAvailable(event: Types.EventListItemSchema) {
+function getPageNumbers(total: number, current: number): Array<number | "ellipsis-left" | "ellipsis-right"> {
-  const now = new Date();
+  if (total <= 7) return Array.from({ length: total }, (_, index) => index + 1);
-  const end = new Date(event.registration_end_date ?? event.start_time);
+
-  const timeOk = end.getTime() > now.getTime();
+  const start = Math.max(2, current - 1);
-  return timeOk && spotsLeft(event) > 0;
+  const end = Math.min(total - 1, current + 1);
+  const pages: Array<number | "ellipsis-left" | "ellipsis-right"> = [1];
+  if (start > 2) pages.push("ellipsis-left");
+  for (let page = start; page <= end; page += 1) pages.push(page);
+  if (end < total - 1) pages.push("ellipsis-right");
+  pages.push(total);
+  return pages;
 }
 
-function notAvailableReasonFa(event: Types.EventListItemSchema) {
+function toBrowseRequest(filters: EventCatalogFilters) {
-  const now = new Date();
+  return {
-  const end = new Date(event.registration_end_date ?? event.start_time);
+    state: filters.state,
-  if (end.getTime() <= now.getTime()) return "ثبت‌نام پایان‌یافته";
+    event_type: filters.eventType === "all" ? undefined : filters.eventType,
-  if (spotsLeft(event) <= 0) return "ظرفیت تکمیل";
+    search: filters.search,
-  return "غیرقابل ثبت‌نام";
+    date_from: filters.dateFrom || undefined,
+    date_to: filters.dateTo || undefined,
+    price_min: filters.freeOnly ? undefined : filters.priceMin,
+    price_max: filters.freeOnly ? undefined : filters.priceMax,
+    free_only: filters.freeOnly,
+    page: filters.page,
+  };
 }
 
 export default function Events({
   content,
-  initialEvents = [],
+  initialPage,
-  initialSearch = "",
+  initialFilters,
-}: EventsProps) {
+}: {
-  const navigate = useNavigate();
+  content: EventsContentPage;
-  const location = useLocation();
+  initialPage: EventBrowsePageSchema;
-  const [events, setEvents] = useState<Types.EventListItemSchema[]>(initialEvents);
+  initialFilters: EventCatalogFilters;
-  const [search, setSearch] = useState(initialSearch);
+}) {
-  const [loading, setLoading] = useState(!initialEvents.length && !initialSearch);
+  const [pageData, setPageData] = useState(initialPage);
+  const [filters, setFilters] = useState(initialFilters);
+  const [draftFilters, setDraftFilters] = useState(initialFilters);
+  const [search, setSearch] = useState(initialFilters.search);
+  const [drawerOpen, setDrawerOpen] = useState(false);
+  const [loading, setLoading] = useState(false);
+  const [loadError, setLoadError] = useState(false);
+  const [retryToken, setRetryToken] = useState(0);
+  const [now] = useState(() => Date.now());
+  const resultsRef = useRef<HTMLDivElement>(null);
+  const skipFirstFetch = useRef(true);
 
   useEffect(() => {
-    setEvents(initialEvents);
+    const query = new URLSearchParams(window.location.search);
-  }, [initialEvents]);
+    const nextUrl = query.toString()
+      ? `${window.location.pathname}?${query.toString()}`
+      : window.location.pathname;
+    const handlePopState = () => {
+      const restored = parseEventCatalogParams(
+        new URLSearchParams(window.location.search),
+        pageData.price_ceiling,
+      );
+      setFilters(restored);
+      setDraftFilters(restored);
+      setSearch(restored.search);
+      setDrawerOpen(false);
+    };
+    window.addEventListener("popstate", handlePopState);
 
-  useEffect(() => {
+    // Keep the route query canonical while preserving Next.js' router state.
-    setSearch(initialSearch);
+    if (nextUrl !== `${window.location.pathname}${window.location.search}`) {
-  }, [initialSearch]);
+      window.history.replaceState(null, "", nextUrl);
-
-  const loadEvents = useCallback(async () => {
-    try {
-      setLoading(true);
-      const data = await api.getEvents({
-        search: search || undefined,
-        statuses: ["published", "completed"],
-        limit: 30,
-      });
-      setEvents(data);
-    } catch (error) {
-      console.error("Error loading events:", error);
-    } finally {
-      setLoading(false);
     }
+
+    return () => {
+      window.removeEventListener("popstate", handlePopState);
+    };
+  }, [pageData.price_ceiling]);
+
+  useEffect(() => {
+    const timer = window.setTimeout(() => {
+      setFilters((current) => {
+        const normalizedSearch = search.trim();
+        if (current.search === normalizedSearch) return current;
+        return { ...current, search: normalizedSearch, page: 1 };
+      });
+    }, 300);
+    return () => window.clearTimeout(timer);
   }, [search]);
 
   useEffect(() => {
-    loadEvents();
+    const query = serializeEventCatalogParams(filters, pageData.price_ceiling);
-  }, [loadEvents]);
+    const nextUrl = query.size
+      ? `${window.location.pathname}?${query.toString()}`
+      : window.location.pathname;
+    if (nextUrl !== `${window.location.pathname}${window.location.search}`) {
+      window.history.replaceState(null, "", nextUrl);
+    }
+  }, [filters, pageData.price_ceiling]);
 
   useEffect(() => {
-    const params = new URLSearchParams();
+    if (skipFirstFetch.current) {
-    if (search.trim()) {
+      skipFirstFetch.current = false;
-      params.set("search", search.trim());
+      return;
     }
-    const basePath = location.pathname || "/events";
+
-    const nextPath = params.size
+    let active = true;
-      ? `${basePath}?${params.toString()}`
+    setLoading(true);
-      : basePath;
+    setLoadError(false);
-    navigate(nextPath, { replace: true });
+    const timer = window.setTimeout(() => {
-  }, [location.pathname, navigate, search]);
+      api.browseEvents(toBrowseRequest(filters))
+        .then((response) => {
+          if (!active) return;
+          setPageData(response);
+          setFilters((current) => {
+            const nextPage = response.page;
+            const nextPriceMax = current.priceMax >= pageData.price_ceiling
+              ? response.price_ceiling
+              : current.priceMax;
+            if (current.page === nextPage && current.priceMax === nextPriceMax) return current;
+            return { ...current, page: nextPage, priceMax: nextPriceMax };
+          });
+          setDraftFilters((current) => {
+            const nextPriceMax = current.priceMax >= pageData.price_ceiling
+              ? response.price_ceiling
+              : current.priceMax;
+            return current.priceMax === nextPriceMax ? current : { ...current, priceMax: nextPriceMax };
+          });
+        })
+        .catch(() => {
+          if (active) setLoadError(true);
+        })
+        .finally(() => {
+          if (active) setLoading(false);
+        });
+    }, 180);
+
+    return () => {
+      active = false;
+      window.clearTimeout(timer);
+    };
+  }, [filters, pageData.price_ceiling, retryToken]);
+
+  const updateFilters = useCallback((patch: Partial<EventCatalogFilters>) => {
+    const mergePatch = (current: EventCatalogFilters): EventCatalogFilters => ({
+      ...current,
+      ...patch,
+      search: search.trim(),
+      page: 1,
+    });
+    setDraftFilters(mergePatch);
+  }, [search]);
+
+  const resetFilters = useCallback(() => {
+    const reset = defaultFilters(search.trim(), pageData.price_ceiling);
+    setDraftFilters(reset);
+    setFilters(reset);
+    setDrawerOpen(false);
+  }, [pageData.price_ceiling, search]);
+
+  const handleDrawerChange = (open: boolean) => {
+    if (open) setDraftFilters(filters);
+    setDrawerOpen(open);
+  };
+
+  const applyFilters = () => {
+    setFilters({ ...draftFilters, search: search.trim(), page: 1 });
+    setDrawerOpen(false);
+  };
+
+  const activeFilterCount = [
+    filters.state !== "all",
+    filters.eventType !== "all",
+    Boolean(filters.dateFrom && filters.dateTo),
+    filters.freeOnly,
+    !filters.freeOnly && (filters.priceMin > 0 || filters.priceMax < pageData.price_ceiling),
+  ].filter(Boolean).length;
+
+  const pageNumbers = useMemo(
+    () => getPageNumbers(pageData.total_pages, pageData.page),
+    [pageData.page, pageData.total_pages],
+  );
+
+  const changePage = (page: number) => {
+    if (page < 1 || page > pageData.total_pages || page === filters.page) return;
+    setFilters((current) => ({ ...current, page }));
+    window.setTimeout(() => {
+      resultsRef.current?.scrollIntoView({
+        behavior: window.matchMedia("(prefers-reduced-motion: reduce)").matches ? "auto" : "smooth",
+        block: "start",
+      });
+    }, 0);
+  };
 
   return (
-      <main className="min-h-screen bg-background" dir="rtl">
+    <main className="min-h-screen bg-background" dir="rtl">
-        <div className="container mx-auto px-4 py-8">
+      <div className="container mx-auto max-w-screen-2xl px-3 py-5 sm:px-4 sm:py-8 lg:px-6">
-          <h1 className="mb-3 text-4xl font-bold">{content.title}</h1>
+        <header className="mb-6 border-b border-border pb-5 sm:mb-8 sm:pb-6">
-          {content.intro ? <p className="mb-8 max-w-3xl leading-8 text-muted-foreground">{content.intro}</p> : null}
+          <h1 className="text-2xl font-bold leading-tight tracking-tight sm:text-3xl">{content.title}</h1>
+          {content.intro ? <p className="mt-2 max-w-3xl text-sm leading-7 text-muted-foreground sm:text-base">{content.intro}</p> : null}
+        </header>
 
-          <div className="mb-8">
+        <section aria-label="نتایج رویدادها" className="min-w-0 lg:flex lg:flex-col">
-            <Input
+            <div dir="rtl" className="mb-4 flex items-center gap-2 sm:mb-5">
-              type="text"
+              <div className="relative min-w-0 flex-1">
-              placeholder="جستجو در رویدادها..."
+                <Search aria-hidden="true" className="absolute left-3 top-1/2 size-4 -translate-y-1/2 text-muted-foreground" />
-              aria-label="جستجو در رویدادها"
+                <Input
-              value={search}
+                  type="search"
-              onChange={(e) => setSearch(e.target.value)}
+                  placeholder="جستجو در رویدادها…"
-              className="max-w-md"
+                  aria-label="جستجو در رویدادها"
-            />
+                  value={search}
-          </div>
+                  onChange={(event) => setSearch(event.target.value)}
-
+                  className="h-11 pl-10 pr-3 focus-visible:ring-0 focus-visible:ring-offset-0"
-          {loading ? (
+                />
-            <p className="text-center text-muted-foreground">در حال بارگذاری...</p>
+              </div>
-          ) : events.length === 0 ? (
+              <EventFiltersDrawer
-            <p className="text-center text-muted-foreground">رویدادی یافت نشد</p>
+                open={drawerOpen}
-          ) : (
+                filters={draftFilters}
-            <div className="grid md:grid-cols-2 lg:grid-cols-3 gap-6">
+                priceCeiling={pageData.price_ceiling}
-              {events.map((event) => (
+                activeFilterCount={activeFilterCount}
-                <Link key={event.id} to={`/events/${event.slug}`} className="block h-full">
+                disabled={loading}
-                  <Card className="h-full flex flex-col hover:shadow-lg transition-shadow">
+                onOpenChange={handleDrawerChange}
-                    <div className="w-full aspect-video overflow-hidden rounded-lg">
+                onChange={updateFilters}
-                      <ProgressiveImage
+                onReset={resetFilters}
-                        src={getEventCardImageUrl(event)}
+                onApply={applyFilters}
-                        alt={event.title}
+              />
-                        wrapperClassName="h-full w-full"
-                        className="h-full w-full object-cover"
-                      />
-                    </div>
-
-                    <div className="flex-1 flex flex-col justify-between">
-                      <CardHeader>
-                        <div className="flex items-start justify-between gap-2">
-                          <CardTitle className="line-clamp-2">{event.title}</CardTitle>
-                          <Badge variant="default">{modeFa(event.event_type)}</Badge>
-                        </div>
-                        <CardDescription>{formatJalali(event.start_time, false)}</CardDescription>
-                      </CardHeader>
-
-                      <CardContent>
-                        <div className="grid gap-1 text-sm" dir="rtl">
-                          <div className="flex items-center justify-between">
-                            <span className="text-muted-foreground">ظرفیت رویداد</span>
-                            <span className="font-medium">
-                              {formatNumberPersian(Number(event?.capacity ?? 0) - Number(event?.registration_count ?? 0))}
-                              /
-                              {formatNumberPersian(Number(event?.capacity ?? 0))} نفر
-                            </span>
-                          </div>
-                          <div className="flex items-center justify-between">
-                            <span className="text-muted-foreground">هزینه‌ی ثبت‌نام</span>
-                            <span className="font-medium">{labelPrice(event)}</span>
-                          </div>
-                          {isAvailable(event) ? (
-                            <Button>جزئیات رویداد</Button>
-                          ) : (
-                            <Button variant="secondary">{notAvailableReasonFa(event)}</Button>
-                          )}
-                        </div>
-                      </CardContent>
-                    </div>
-                  </Card>
-                </Link>
-              ))}
             </div>
-          )}
+
-        </div>
+            {loadError ? (
-      </main>
+              <div role="alert" className="mb-4 flex flex-col gap-3 rounded-xl border border-destructive/30 bg-destructive/5 p-4 sm:flex-row sm:items-center sm:justify-between">
+                <p className="text-sm">دریافت رویدادها با خطا روبه‌رو شد. اتصال را بررسی کنید و دوباره تلاش کنید.</p>
+                <Button type="button" variant="outline" onClick={() => setRetryToken((value) => value + 1)} disabled={loading}>
+                  تلاش دوباره
+                </Button>
+              </div>
+            ) : null}
+
+            <div ref={resultsRef} className="scroll-mt-24 lg:flex-1" aria-busy={loading}>
+              {loading ? (
+                <EventResultsSkeleton />
+              ) : pageData.results.length ? (
+                <div className="grid grid-cols-1 gap-3 sm:grid-cols-2 sm:gap-4 xl:grid-cols-3">
+                  {pageData.results.map((event) => <EventCard key={event.id} event={event} now={now} />)}
+                </div>
+              ) : loadError ? (
+                <div className="rounded-xl border border-border bg-card px-5 py-12 text-center">
+                  <p className="font-semibold">رویدادها بارگذاری نشدند</p>
+                  <p className="mt-2 text-sm text-muted-foreground">بعد از برقراری اتصال، دوباره تلاش کنید.</p>
+                  <Button type="button" className="mt-5" onClick={() => setRetryToken((value) => value + 1)} disabled={loading}>تلاش دوباره</Button>
+                </div>
+              ) : (
+                <div role="status" className="flex min-h-[22rem] flex-col items-center justify-center rounded-xl border border-border bg-card px-5 py-10 text-center sm:py-12 lg:h-full">
+                  <Image
+                    src="/images/events-empty-state-quiera.png"
+                    alt=""
+                    aria-hidden="true"
+                    width={1489}
+                    height={1056}
+                    className="mb-5 h-auto w-full max-w-[300px] object-contain sm:max-w-[420px]"
+                  />
+                  <p className="font-semibold">رویدادی با این مشخصات پیدا نشد.</p>
+                </div>
+              )}
+            </div>
+
+            {pageData.total_pages > 1 ? (
+              <nav aria-label="صفحه‌بندی رویدادها" className="mt-7 flex flex-wrap items-center justify-center gap-1.5">
+                <Button
+                  type="button"
+                  variant="outline"
+                  size="sm"
+                  disabled={pageData.page <= 1 || loading}
+                  onClick={() => changePage(pageData.page - 1)}
+                  aria-label="صفحهٔ قبلی"
+                >
+                  قبلی
+                </Button>
+                {pageNumbers.map((page) => typeof page === "number" ? (
+                  <Button
+                    key={page}
+                    type="button"
+                    variant={page === pageData.page ? "default" : "outline"}
+                    size="icon"
+                    className="size-9"
+                    aria-current={page === pageData.page ? "page" : undefined}
+                    aria-label={`صفحهٔ ${formatNumberPersian(page)}`}
+                    onClick={() => changePage(page)}
+                    disabled={loading}
+                  >
+                    {formatNumberPersian(page)}
+                  </Button>
+                ) : (
+                  <span key={page} aria-hidden="true" className="px-1 text-muted-foreground">…</span>
+                ))}
+                <Button
+                  type="button"
+                  variant="outline"
+                  size="sm"
+                  disabled={pageData.page >= pageData.total_pages || loading}
+                  onClick={() => changePage(pageData.page + 1)}
+                  aria-label="صفحهٔ بعدی"
+                >
+                  بعدی
+                </Button>
+              </nav>
+            ) : null}
+
+            <span className="sr-only">{formatNumberPersian(EVENT_PAGE_SIZE)} رویداد در هر صفحه</span>
+        </section>
+      </div>
+    </main>
   );
 }

tests/event-catalog.test.mjs

@@ -0,0 +1,151 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import {
+  EVENT_PAGE_SIZE,
+  getEventLocationLabel,
+  getPriceCeiling,
+  parseEventCatalogParams,
+  serializeEventCatalogParams,
+} from "../src/lib/event-catalog.ts";
+import {
+  getEventBrowseLabel,
+  getEventRegistrationMessage,
+} from "../src/lib/event-ui.ts";
+
+const now = Date.parse("2026-09-30T12:00:00.000Z");
+
+function event(overrides = {}) {
+  return {
+    status: "published",
+    event_type: "on_site",
+    address: "",
+    location: null,
+    start_time: "2026-10-01T12:00:00.000Z",
+    end_time: "2026-10-01T14:00:00.000Z",
+    registration_start_date: "2026-09-29T12:00:00.000Z",
+    registration_end_date: "2026-10-01T12:00:00.000Z",
+    capacity: 20,
+    registration_count: 8,
+    ...overrides,
+  };
+}
+
+test("uses the agreed Persian status labels for completed, open, and upcoming events", () => {
+  assert.equal(getEventBrowseLabel(event({ status: "completed" }), now), "برگزار شده");
+  assert.equal(getEventBrowseLabel(event(), now), "درحال برگزاری");
+  assert.equal(
+    getEventBrowseLabel(event({ registration_start_date: "2026-10-01T12:00:00.000Z" }), now),
+    "به‌زودی",
+  );
+  assert.equal(
+    getEventBrowseLabel(event({ capacity: 8 }), now),
+    "به‌زودی",
+  );
+});
+
+test("uses a distinct registration message for not started, closed, full, and completed events", () => {
+  assert.equal(
+    getEventRegistrationMessage(event({ registration_start_date: "2026-10-01T12:00:00.000Z" }), now),
+    "ثبت‌نام هنوز آغاز نشده است",
+  );
+  assert.equal(
+    getEventRegistrationMessage(event({ registration_end_date: "2026-09-29T11:59:00.000Z" }), now),
+    "زمان ثبت‌نام به پایان رسیده است",
+  );
+  assert.equal(
+    getEventRegistrationMessage(event({ capacity: 8 }), now),
+    "ظرفیت ثبت‌نام تکمیل شده است",
+  );
+  assert.equal(
+    getEventRegistrationMessage(event({ status: "completed" }), now),
+    "این رویداد برگزار شده است",
+  );
+});
+
+test("rounds the global price maximum up to the next complete million", () => {
+  assert.equal(getPriceCeiling(650000), 1000000);
+  assert.equal(getPriceCeiling(4300000), 5000000);
+  assert.equal(getPriceCeiling(5000000), 5000000);
+  assert.equal(getPriceCeiling(0), 0);
+});
+
+test("always provides a location label and applies the requested fallbacks", () => {
+  assert.equal(getEventLocationLabel(event({ event_type: "online" })), "برگزاری آنلاین");
+  assert.equal(getEventLocationLabel(event({ event_type: "online", address: "گوگلمیت" })), "برگزاری آنلاین");
+  assert.equal(getEventLocationLabel(event()), "محل برگزاری اعلام نشده");
+  assert.equal(getEventLocationLabel(event({ address: "ساختمان دانشکده" })), "ساختمان دانشکده");
+});
+
+test("round-trips shareable catalog filters and defaults to 12 items per page", () => {
+  const filters = parseEventCatalogParams(new URLSearchParams(
+    "search=برنامه%20نویسی&state=upcoming&event_type=hybrid&date_from=2026-09-20&date_to=2026-09-30&price_min=100000&price_max=500000&page=3",
+  ), 1000000);
+
+  assert.deepEqual(filters, {
+    search: "برنامه نویسی",
+    state: "upcoming",
+    eventType: "hybrid",
+    dateFrom: "2026-09-20",
+    dateTo: "2026-09-30",
+    priceMin: 100000,
+    priceMax: 500000,
+    freeOnly: false,
+    page: 3,
+  });
+  assert.deepEqual(
+    parseEventCatalogParams(serializeEventCatalogParams(filters, 1000000), 1000000),
+    filters,
+  );
+  assert.equal(
+    serializeEventCatalogParams({
+      search: "",
+      state: "all",
+      eventType: "all",
+      dateFrom: "",
+      dateTo: "",
+      priceMin: 0,
+      priceMax: 1000000,
+      freeOnly: false,
+      page: 1,
+    }, 1000000).toString(),
+    "",
+  );
+  assert.equal(EVENT_PAGE_SIZE, 12);
+});
+
+test("omits price bounds from the URL when free-only is enabled", () => {
+  const params = serializeEventCatalogParams({
+    search: "",
+    state: "upcoming",
+    eventType: "all",
+    dateFrom: "",
+    dateTo: "",
+    priceMin: 350000,
+    priceMax: 1000000,
+    freeOnly: true,
+    page: 1,
+  }, 1000000);
+
+  assert.equal(params.get("free_only"), "true");
+  assert.equal(params.has("price_min"), false);
+  assert.equal(params.has("price_max"), false);
+});
+
+test("ignores invalid or reversed query values and uses safe catalog defaults", () => {
+  assert.deepEqual(
+    parseEventCatalogParams(new URLSearchParams(
+      "state=unknown&event_type=other&date_from=2026-10-02&date_to=2026-10-01&price_min=-1&price_max=nope&page=0",
+    ), 500000),
+    {
+      search: "",
+      state: "all",
+      eventType: "all",
+      dateFrom: "",
+      dateTo: "",
+      priceMin: 0,
+      priceMax: 500000,
+      freeOnly: false,
+      page: 1,
+    },
+  );
+});

tests/event-ui.test.mjs

@@ -0,0 +1,108 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import {
+  getEventCardState,
+  getEventRegistrationState,
+  classifyRegistrationError,
+  getPaymentOutcome,
+  getRegistrationOutcome,
+  getEventPath,
+} from "../src/lib/event-ui.ts";
+
+const now = Date.parse("2026-09-29T12:00:00.000Z");
+
+function event(overrides = {}) {
+  return {
+    status: "published",
+    start_time: "2026-10-01T12:00:00.000Z",
+    end_time: "2026-10-01T14:00:00.000Z",
+    registration_start_date: null,
+    registration_end_date: "2026-09-30T12:00:00.000Z",
+    capacity: 20,
+    registration_count: 8,
+    ...overrides,
+  };
+}
+
+test("treats a missing capacity as unlimited", () => {
+  assert.deepEqual(
+    getEventRegistrationState(event({ capacity: null }), now),
+    { state: "open", remaining: null },
+  );
+});
+
+test("marks an event full when confirmed registrations reach capacity", () => {
+  assert.deepEqual(
+    getEventRegistrationState(event({ capacity: 8 }), now),
+    { state: "full", remaining: 0 },
+  );
+});
+
+test("uses inclusive registration window boundaries like the backend", () => {
+  assert.equal(
+    getEventRegistrationState(event({ registration_start_date: new Date(now).toISOString() }), now).state,
+    "open",
+  );
+  assert.equal(
+    getEventRegistrationState(event({ registration_end_date: new Date(now).toISOString() }), now).state,
+    "open",
+  );
+});
+
+test("distinguishes unpublished, not-yet-open, and ended registration", () => {
+  assert.equal(getEventRegistrationState(event({ status: "completed" }), now).state, "unavailable");
+  assert.equal(
+    getEventRegistrationState(event({ registration_start_date: "2026-09-30T12:00:00.000Z" }), now).state,
+    "not_started",
+  );
+  assert.equal(
+    getEventRegistrationState(event({ registration_end_date: "2026-09-29T11:59:59.000Z" }), now).state,
+    "closed",
+  );
+});
+
+test("prioritizes an elapsed registration deadline over a future opening date", () => {
+  assert.equal(
+    getEventRegistrationState(event({
+      registration_start_date: "2026-09-30T12:00:00.000Z",
+      registration_end_date: "2026-09-28T12:00:00.000Z",
+    }), now).state,
+    "closed",
+  );
+});
+
+test("labels completed events separately from registration availability", () => {
+  assert.equal(getEventCardState(event({ status: "completed" }), now), "past");
+  assert.equal(getEventCardState(event(), now), "upcoming");
+  assert.equal(getEventCardState(event({ capacity: 8 }), now), "full");
+});
+
+test("classifies backend registration errors including Persian duplicate responses", () => {
+  assert.equal(classifyRegistrationError("شما قبلا در این ایونت ثبت‌نام کرده‌اید."), "already_registered");
+  assert.equal(classifyRegistrationError("زمان ثبت‌نام هنوز آغاز نشده است"), "not_started");
+  assert.equal(classifyRegistrationError("مهلت ثبت‌نام به پایان رسیده‌است"), "closed");
+  assert.equal(classifyRegistrationError("ظرفیت شرکت‌کنندگان تکمیل است"), "full");
+  assert.equal(classifyRegistrationError("network error"), "unknown");
+});
+
+test("keeps callback outcomes distinct and never treats unknown as paid", () => {
+  assert.equal(getPaymentOutcome("success"), "paid");
+  assert.equal(getPaymentOutcome("canceled"), "canceled");
+  assert.equal(getPaymentOutcome("failed"), "failed");
+  assert.equal(getPaymentOutcome("pending"), "pending");
+  assert.equal(getPaymentOutcome("unexpected"), "unknown");
+});
+
+test("distinguishes confirmed, pending, canceled, and unknown registrations", () => {
+  assert.equal(getRegistrationOutcome("confirmed"), "confirmed");
+  assert.equal(getRegistrationOutcome("attended"), "confirmed");
+  assert.equal(getRegistrationOutcome("pending"), "pending");
+  assert.equal(getRegistrationOutcome("cancelled"), "canceled");
+  assert.equal(getRegistrationOutcome("other"), "unknown");
+});
+
+test("uses the event id as a detail route when the event has no slug", () => {
+  assert.equal(getEventPath({ id: 42, slug: "" }), "/events/42");
+  assert.equal(getEventPath({ id: 42, slug: "  " }), "/events/42");
+  assert.equal(getEventPath({ id: 42, slug: "event-title" }), "/events/event-title");
+});