adaption

The 'Today' stat card now adds the running timer's elapsed seconds to
the total, so the displayed duration ticks up live alongside the timer
widget. The timer is only counted when it started today (timers carried
over from the previous day are excluded).

A pulsing green indicator dot is shown on the stat card value while the
timer is active, consistent with the balance widget treatment. The dot
is implemented via a new optional 'indicator' prop on StatCard so it
can be reused elsewhere without changing existing call sites.

backend/prisma/migrations/20260224000000_client_targets_v2/migration.sql

@@ -0,0 +1,10 @@
+-- CreateEnum
+CREATE TYPE "PeriodType" AS ENUM ('WEEKLY', 'MONTHLY');
+
+-- AlterTable: rename weekly_hours -> target_hours, add period_type, add working_days
+ALTER TABLE "client_targets"
+  RENAME COLUMN "weekly_hours" TO "target_hours";
+
+ALTER TABLE "client_targets"
+  ADD COLUMN "period_type" "PeriodType" NOT NULL DEFAULT 'WEEKLY',
+  ADD COLUMN "working_days" TEXT[] NOT NULL DEFAULT ARRAY['MON','TUE','WED','THU','FRI']::TEXT[];

backend/prisma/schema.prisma

@@ -99,13 +99,20 @@ model OngoingTimer {
   @@map("ongoing_timers")
 }
 
+enum PeriodType {
+  WEEKLY
+  MONTHLY
+}
+
 model ClientTarget {
-  id          String    @id @default(uuid())
-  weeklyHours Float     @map("weekly_hours")
-  startDate   DateTime  @map("start_date") @db.Date // Always a Monday
-  createdAt   DateTime  @default(now()) @map("created_at")
-  updatedAt   DateTime  @updatedAt @map("updated_at")
-  deletedAt   DateTime? @map("deleted_at")
+  id          String     @id @default(uuid())
+  targetHours Float      @map("target_hours")
+  periodType  PeriodType @default(WEEKLY) @map("period_type")
+  workingDays String[]   @map("working_days") // e.g. ["MON","WED","FRI"]
+  startDate   DateTime   @map("start_date") @db.Date
+  createdAt   DateTime   @default(now()) @map("created_at")
+  updatedAt   DateTime   @updatedAt @map("updated_at")
+  deletedAt   DateTime?  @map("deleted_at")
 
   userId   String @map("user_id") @db.VarChar(255)
   user     User   @relation(fields: [userId], references: [id], onDelete: Cascade)

backend/src/schemas/index.ts

@@ -73,14 +73,20 @@ export const StopTimerSchema = z.object({
   projectId: z.string().uuid().optional(),
 });
 
+const WorkingDayEnum = z.enum(['MON', 'TUE', 'WED', 'THU', 'FRI', 'SAT', 'SUN']);
+
 export const CreateClientTargetSchema = z.object({
   clientId: z.string().uuid(),
-  weeklyHours: z.number().positive().max(168),
+  targetHours: z.number().positive().max(168),
+  periodType: z.enum(['weekly', 'monthly']),
+  workingDays: z.array(WorkingDayEnum).min(1, 'At least one working day is required'),
   startDate: z.string().regex(/^\d{4}-\d{2}-\d{2}$/, 'startDate must be a date in YYYY-MM-DD format'),
 });
 
 export const UpdateClientTargetSchema = z.object({
-  weeklyHours: z.number().positive().max(168).optional(),
+  targetHours: z.number().positive().max(168).optional(),
+  periodType: z.enum(['weekly', 'monthly']).optional(),
+  workingDays: z.array(WorkingDayEnum).min(1, 'At least one working day is required').optional(),
   startDate: z.string().regex(/^\d{4}-\d{2}-\d{2}$/, 'startDate must be a date in YYYY-MM-DD format').optional(),
 });
 

backend/src/services/clientTarget.service.ts

@@ -3,44 +3,191 @@ import { NotFoundError, BadRequestError } from '../errors/AppError';
 import type { CreateClientTargetInput, UpdateClientTargetInput, CreateCorrectionInput } from '../types';
 import { Prisma } from '@prisma/client';
 
-// Returns the Monday of the week containing the given date
-function getMondayOfWeek(date: Date): Date {
-  const d = new Date(date);
-  const day = d.getUTCDay(); // 0 = Sunday, 1 = Monday, ...
+// ---------------------------------------------------------------------------
+// Day-of-week helpers
+// ---------------------------------------------------------------------------
+
+const DAY_NAMES = ['SUN', 'MON', 'TUE', 'WED', 'THU', 'FRI', 'SAT'] as const;
+
+/** Returns the UTC day index (0=Sun … 6=Sat) for a YYYY-MM-DD string. */
+function dayIndex(dateStr: string): number {
+  return new Date(dateStr + 'T00:00:00Z').getUTCDay();
+}
+
+/** Checks whether a day-name string (e.g. "MON") is in the working-days array. */
+function isWorkingDay(dateStr: string, workingDays: string[]): boolean {
+  return workingDays.includes(DAY_NAMES[dayIndex(dateStr)]);
+}
+
+/** Adds `n` calendar days to a YYYY-MM-DD string and returns a new YYYY-MM-DD. */
+function addDays(dateStr: string, n: number): string {
+  const d = new Date(dateStr + 'T00:00:00Z');
+  d.setUTCDate(d.getUTCDate() + n);
+  return d.toISOString().split('T')[0];
+}
+
+/** Returns the Monday of the ISO week that contains the given date string. */
+function getMondayOfWeek(dateStr: string): string {
+  const d = new Date(dateStr + 'T00:00:00Z');
+  const day = d.getUTCDay(); // 0=Sun
   const diff = day === 0 ? -6 : 1 - day;
   d.setUTCDate(d.getUTCDate() + diff);
-  d.setUTCHours(0, 0, 0, 0);
-  return d;
+  return d.toISOString().split('T')[0];
 }
 
-// Returns the Sunday (end of week) for a given Monday
-function getSundayOfWeek(monday: Date): Date {
-  const d = new Date(monday);
-  d.setUTCDate(d.getUTCDate() + 6);
-  d.setUTCHours(23, 59, 59, 999);
-  return d;
+/** Returns the Sunday of the ISO week given its Monday date string. */
+function getSundayOfWeek(monday: string): string {
+  return addDays(monday, 6);
 }
 
-// Returns all Mondays from startDate up to and including the current week's Monday
-function getWeekMondays(startDate: Date): Date[] {
-  const mondays: Date[] = [];
-  const currentMonday = getMondayOfWeek(new Date());
-  let cursor = new Date(startDate);
-  cursor.setUTCHours(0, 0, 0, 0);
-  while (cursor <= currentMonday) {
-    mondays.push(new Date(cursor));
-    cursor.setUTCDate(cursor.getUTCDate() + 7);
+/** Returns the first day of the month for a given date string. */
+function getMonthStart(dateStr: string): string {
+  return dateStr.slice(0, 7) + '-01';
+}
+
+/** Returns the last day of the month for a given date string. */
+function getMonthEnd(dateStr: string): string {
+  const d = new Date(dateStr + 'T00:00:00Z');
+  // Set to first day of next month then subtract 1 day
+  const last = new Date(Date.UTC(d.getUTCFullYear(), d.getUTCMonth() + 1, 0));
+  return last.toISOString().split('T')[0];
+}
+
+/** Total calendar days in the month containing dateStr. */
+function daysInMonth(dateStr: string): number {
+  const d = new Date(dateStr + 'T00:00:00Z');
+  return new Date(Date.UTC(d.getUTCFullYear(), d.getUTCMonth() + 1, 0)).getUTCDate();
+}
+
+/** Compare two YYYY-MM-DD strings. Returns negative, 0, or positive. */
+function cmpDate(a: string, b: string): number {
+  return a < b ? -1 : a > b ? 1 : 0;
+}
+
+// ---------------------------------------------------------------------------
+// Period enumeration
+// ---------------------------------------------------------------------------
+
+interface Period {
+  start: string; // YYYY-MM-DD
+  end: string;   // YYYY-MM-DD
+}
+
+/**
+ * Returns the period (start + end) that contains the given date.
+ * For weekly: Mon–Sun.
+ * For monthly: 1st–last day of month.
+ */
+function getPeriodForDate(dateStr: string, periodType: 'weekly' | 'monthly'): Period {
+  if (periodType === 'weekly') {
+    const monday = getMondayOfWeek(dateStr);
+    return { start: monday, end: getSundayOfWeek(monday) };
+  } else {
+    return { start: getMonthStart(dateStr), end: getMonthEnd(dateStr) };
   }
-  return mondays;
 }
 
-interface WeekBalance {
-  weekStart: string; // ISO date string (Monday)
-  weekEnd: string;   // ISO date string (Sunday)
+/**
+ * Returns the start of the NEXT period after `currentPeriodEnd`.
+ */
+function nextPeriodStart(currentPeriodEnd: string, periodType: 'weekly' | 'monthly'): string {
+  if (periodType === 'weekly') {
+    return addDays(currentPeriodEnd, 1); // Monday of next week
+  } else {
+    // First day of next month
+    const d = new Date(currentPeriodEnd + 'T00:00:00Z');
+    const next = new Date(Date.UTC(d.getUTCFullYear(), d.getUTCMonth() + 1, 1));
+    return next.toISOString().split('T')[0];
+  }
+}
+
+/**
+ * Enumerates all periods from startDate's period through today's period (inclusive).
+ */
+function enumeratePeriods(startDate: string, periodType: 'weekly' | 'monthly'): Period[] {
+  const today = new Date().toISOString().split('T')[0];
+  const periods: Period[] = [];
+
+  const firstPeriod = getPeriodForDate(startDate, periodType);
+  let cursor = firstPeriod;
+
+  while (cmpDate(cursor.start, today) <= 0) {
+    periods.push(cursor);
+    const ns = nextPeriodStart(cursor.end, periodType);
+    cursor = getPeriodForDate(ns, periodType);
+  }
+
+  return periods;
+}
+
+// ---------------------------------------------------------------------------
+// Working-day counting
+// ---------------------------------------------------------------------------
+
+/**
+ * Counts working days in [from, to] (both inclusive) matching the given pattern.
+ */
+function countWorkingDays(from: string, to: string, workingDays: string[]): number {
+  if (cmpDate(from, to) > 0) return 0;
+  let count = 0;
+  let cur = from;
+  while (cmpDate(cur, to) <= 0) {
+    if (isWorkingDay(cur, workingDays)) count++;
+    cur = addDays(cur, 1);
+  }
+  return count;
+}
+
+// ---------------------------------------------------------------------------
+// Pro-ration helpers
+// ---------------------------------------------------------------------------
+
+/**
+ * Returns the pro-rated target hours for the first period, applying §5 of the spec.
+ * If startDate falls on the natural first day of the period, no pro-ration occurs.
+ */
+function computePeriodTargetHours(
+  period: Period,
+  startDate: string,
+  targetHours: number,
+  periodType: 'weekly' | 'monthly',
+): number {
+  const naturalStart = period.start;
+  if (cmpDate(startDate, naturalStart) <= 0) {
+    // startDate is at or before the natural period start — no pro-ration needed
+    return targetHours;
+  }
+
+  // startDate is inside the period → pro-rate by calendar days
+  const fullDays = periodType === 'weekly' ? 7 : daysInMonth(period.start);
+  const remainingDays = daysBetween(startDate, period.end); // inclusive both ends
+  return (remainingDays / fullDays) * targetHours;
+}
+
+/** Calendar days between two dates (both inclusive). */
+function daysBetween(from: string, to: string): number {
+  const a = new Date(from + 'T00:00:00Z').getTime();
+  const b = new Date(to + 'T00:00:00Z').getTime();
+  return Math.round((b - a) / 86400000) + 1;
+}
+
+// ---------------------------------------------------------------------------
+// Response types
+// ---------------------------------------------------------------------------
+
+export interface PeriodBalance {
+  periodStart: string;
+  periodEnd: string;
+  targetHours: number;
   trackedSeconds: number;
-  targetSeconds: number;
   correctionHours: number;
-  balanceSeconds: number; // positive = overtime, negative = undertime
+  balanceSeconds: number;
+  isOngoing: boolean;
+  // only when isOngoing = true
+  dailyRateHours?: number;
+  workingDaysInPeriod?: number;
+  elapsedWorkingDays?: number;
+  expectedHours?: number;
 }
 
 export interface ClientTargetWithBalance {
@@ -48,7 +195,9 @@ export interface ClientTargetWithBalance {
   clientId: string;
   clientName: string;
   userId: string;
-  weeklyHours: number;
+  periodType: 'weekly' | 'monthly';
+  targetHours: number;
+  workingDays: string[];
   startDate: string;
   createdAt: string;
   updatedAt: string;
@@ -59,12 +208,36 @@ export interface ClientTargetWithBalance {
     description: string | null;
     createdAt: string;
   }>;
-  totalBalanceSeconds: number; // running total across all weeks
-  currentWeekTrackedSeconds: number;
-  currentWeekTargetSeconds: number;
-  weeks: WeekBalance[];
+  totalBalanceSeconds: number;
+  currentPeriodTrackedSeconds: number;
+  currentPeriodTargetSeconds: number;
+  periods: PeriodBalance[];
+  /** True when an active timer is running for a project belonging to this client. */
+  hasOngoingTimer: boolean;
 }
 
+// ---------------------------------------------------------------------------
+// Prisma record shape accepted by computeBalance
+// ---------------------------------------------------------------------------
+
+type TargetRecord = {
+  id: string;
+  clientId: string;
+  userId: string;
+  targetHours: number;
+  periodType: 'WEEKLY' | 'MONTHLY';
+  workingDays: string[];
+  startDate: Date;
+  createdAt: Date;
+  updatedAt: Date;
+  client: { id: string; name: string };
+  corrections: Array<{ id: string; date: Date; hours: number; description: string | null; createdAt: Date }>;
+};
+
+// ---------------------------------------------------------------------------
+// Service
+// ---------------------------------------------------------------------------
+
 export class ClientTargetService {
   async findAll(userId: string): Promise<ClientTargetWithBalance[]> {
     const targets = await prisma.clientTarget.findMany({
@@ -76,7 +249,7 @@ export class ClientTargetService {
       orderBy: { client: { name: 'asc' } },
     });
 
-    return Promise.all(targets.map(t => this.computeBalance(t)));
+    return Promise.all(targets.map(t => this.computeBalance(t as unknown as TargetRecord)));
   }
 
   async findById(id: string, userId: string) {
@@ -90,19 +263,15 @@ export class ClientTargetService {
   }
 
   async create(userId: string, data: CreateClientTargetInput): Promise<ClientTargetWithBalance> {
-    // Validate startDate is a Monday
-    const startDate = new Date(data.startDate + 'T00:00:00Z');
-    const dayOfWeek = startDate.getUTCDay();
-    if (dayOfWeek !== 1) {
-      throw new BadRequestError('startDate must be a Monday');
-    }
-
     // Ensure the client belongs to this user and is not soft-deleted
     const client = await prisma.client.findFirst({ where: { id: data.clientId, userId, deletedAt: null } });
     if (!client) {
       throw new NotFoundError('Client not found');
     }
 
+    const startDate = new Date(data.startDate + 'T00:00:00Z');
+    const periodType = data.periodType.toUpperCase() as 'WEEKLY' | 'MONTHLY';
+
     // Check for existing target (unique per user+client)
     const existing = await prisma.clientTarget.findFirst({ where: { userId, clientId: data.clientId } });
     if (existing) {
@@ -110,13 +279,19 @@ export class ClientTargetService {
         // Reactivate the soft-deleted target with the new settings
         const reactivated = await prisma.clientTarget.update({
           where: { id: existing.id },
-          data: { deletedAt: null, weeklyHours: data.weeklyHours, startDate },
+          data: {
+            deletedAt: null,
+            targetHours: data.targetHours,
+            periodType,
+            workingDays: data.workingDays,
+            startDate,
+          },
           include: {
             client: { select: { id: true, name: true } },
             corrections: { where: { deletedAt: null }, orderBy: { date: 'asc' } },
           },
         });
-        return this.computeBalance(reactivated);
+        return this.computeBalance(reactivated as unknown as TargetRecord);
       }
       throw new BadRequestError('A target already exists for this client. Delete the existing one first or update it.');
     }
@@ -125,7 +300,9 @@ export class ClientTargetService {
       data: {
         userId,
         clientId: data.clientId,
-        weeklyHours: data.weeklyHours,
+        targetHours: data.targetHours,
+        periodType,
+        workingDays: data.workingDays,
         startDate,
       },
       include: {
@@ -134,26 +311,24 @@ export class ClientTargetService {
       },
     });
 
-    return this.computeBalance(target);
+    return this.computeBalance(target as unknown as TargetRecord);
   }
 
   async update(id: string, userId: string, data: UpdateClientTargetInput): Promise<ClientTargetWithBalance> {
     const existing = await this.findById(id, userId);
     if (!existing) throw new NotFoundError('Client target not found');
 
-    const updateData: { weeklyHours?: number; startDate?: Date } = {};
+    const updateData: {
+      targetHours?: number;
+      periodType?: 'WEEKLY' | 'MONTHLY';
+      workingDays?: string[];
+      startDate?: Date;
+    } = {};
 
-    if (data.weeklyHours !== undefined) {
-      updateData.weeklyHours = data.weeklyHours;
-    }
-
-    if (data.startDate !== undefined) {
-      const startDate = new Date(data.startDate + 'T00:00:00Z');
-      if (startDate.getUTCDay() !== 1) {
-        throw new BadRequestError('startDate must be a Monday');
-      }
-      updateData.startDate = startDate;
-    }
+    if (data.targetHours !== undefined) updateData.targetHours = data.targetHours;
+    if (data.periodType !== undefined) updateData.periodType = data.periodType.toUpperCase() as 'WEEKLY' | 'MONTHLY';
+    if (data.workingDays !== undefined) updateData.workingDays = data.workingDays;
+    if (data.startDate !== undefined) updateData.startDate = new Date(data.startDate + 'T00:00:00Z');
 
     const updated = await prisma.clientTarget.update({
       where: { id },
@@ -164,7 +339,7 @@ export class ClientTargetService {
       },
     });
 
-    return this.computeBalance(updated);
+    return this.computeBalance(updated as unknown as TargetRecord);
   }
 
   async delete(id: string, userId: string): Promise<void> {
@@ -213,94 +388,211 @@ export class ClientTargetService {
     });
   }
 
-  private async computeBalance(target: {
-    id: string;
-    clientId: string;
-    userId: string;
-    weeklyHours: number;
-    startDate: Date;
-    createdAt: Date;
-    updatedAt: Date;
-    client: { id: string; name: string };
-    corrections: Array<{ id: string; date: Date; hours: number; description: string | null; createdAt: Date }>;
-  }): Promise<ClientTargetWithBalance> {
-    const mondays = getWeekMondays(target.startDate);
+  // ---------------------------------------------------------------------------
+  // Balance computation
+  // ---------------------------------------------------------------------------
 
-    if (mondays.length === 0) {
-      return this.emptyBalance(target);
+  private async computeBalance(target: TargetRecord): Promise<ClientTargetWithBalance> {
+    const startDateStr = target.startDate.toISOString().split('T')[0];
+    const periodType = target.periodType.toLowerCase() as 'weekly' | 'monthly';
+    const workingDays = target.workingDays;
+
+    const periods = enumeratePeriods(startDateStr, periodType);
+
+    if (periods.length === 0) {
+      return this.emptyBalance(target, periodType);
     }
 
-    // Fetch all tracked time for this user on this client's projects in one query
-    // covering startDate to end of current week
-    const periodStart = mondays[0];
-    const periodEnd = getSundayOfWeek(mondays[mondays.length - 1]);
+    const overallStart = periods[0].start;
+    const overallEnd = periods[periods.length - 1].end;
+    const today = new Date().toISOString().split('T')[0];
 
-    type TrackedRow = { week_start: Date; tracked_seconds: bigint };
+    // Fetch active timer for this user (if any) and check if it belongs to this client
+    const ongoingTimer = await prisma.ongoingTimer.findUnique({
+      where: { userId: target.userId },
+      include: { project: { select: { clientId: true } } },
+    });
 
-    const rows = await prisma.$queryRaw<TrackedRow[]>(Prisma.sql`
-      SELECT
-        DATE_TRUNC('week', te.start_time AT TIME ZONE 'UTC') AS week_start,
-        COALESCE(SUM(EXTRACT(EPOCH FROM (te.end_time - te.start_time)) - (te.break_minutes * 60)), 0)::bigint AS tracked_seconds
-      FROM time_entries te
-      JOIN projects p ON p.id = te.project_id
-      WHERE te.user_id = ${target.userId}
-        AND p.client_id = ${target.clientId}
-        AND te.start_time >= ${periodStart}
-        AND te.start_time <= ${periodEnd}
-        AND te.deleted_at IS NULL
-        AND p.deleted_at IS NULL
-      GROUP BY DATE_TRUNC('week', te.start_time AT TIME ZONE 'UTC')
-    `);
+    // Elapsed seconds from the active timer attributed to this client target.
+    // We only count it if the timer has a project assigned and that project
+    // belongs to the same client as this target.
+    let ongoingTimerSeconds = 0;
+    let ongoingTimerPeriodStart: string | null = null;
 
-    // Index tracked seconds by week start (ISO Monday string)
-    const trackedByWeek = new Map<string, number>();
-    for (const row of rows) {
-      // DATE_TRUNC with 'week' gives Monday in Postgres (ISO week)
-      const monday = getMondayOfWeek(new Date(row.week_start));
-      const key = monday.toISOString().split('T')[0];
-      trackedByWeek.set(key, Number(row.tracked_seconds));
+    if (
+      ongoingTimer &&
+      ongoingTimer.projectId !== null &&
+      ongoingTimer.project?.clientId === target.clientId
+    ) {
+      ongoingTimerSeconds = Math.floor(
+        (Date.now() - ongoingTimer.startTime.getTime()) / 1000,
+      );
+      // Determine which period the timer's start time falls into
+      const timerDateStr = ongoingTimer.startTime.toISOString().split('T')[0];
+      const timerPeriod = getPeriodForDate(timerDateStr, periodType);
+      ongoingTimerPeriodStart = timerPeriod.start;
     }
 
-    // Index corrections by week
-    const correctionsByWeek = new Map<string, number>();
+    // Fetch all time tracked for this client across the full range in one query
+    type TrackedRow = { period_start: string; tracked_seconds: bigint };
+
+    let trackedRows: TrackedRow[];
+    if (periodType === 'weekly') {
+      trackedRows = await prisma.$queryRaw<TrackedRow[]>(Prisma.sql`
+        SELECT
+          TO_CHAR(
+            DATE_TRUNC('week', te.start_time AT TIME ZONE 'UTC'),
+            'YYYY-MM-DD'
+          ) AS period_start,
+          COALESCE(
+            SUM(EXTRACT(EPOCH FROM (te.end_time - te.start_time)) - (te.break_minutes * 60)),
+            0
+          )::bigint AS tracked_seconds
+        FROM time_entries te
+        JOIN projects p ON p.id = te.project_id
+        WHERE te.user_id = ${target.userId}
+          AND p.client_id = ${target.clientId}
+          AND te.start_time >= ${new Date(overallStart + 'T00:00:00Z')}
+          AND te.start_time <= ${new Date(overallEnd + 'T23:59:59Z')}
+          AND te.deleted_at IS NULL
+          AND p.deleted_at IS NULL
+        GROUP BY DATE_TRUNC('week', te.start_time AT TIME ZONE 'UTC')
+      `);
+    } else {
+      trackedRows = await prisma.$queryRaw<TrackedRow[]>(Prisma.sql`
+        SELECT
+          TO_CHAR(
+            DATE_TRUNC('month', te.start_time AT TIME ZONE 'UTC'),
+            'YYYY-MM-DD'
+          ) AS period_start,
+          COALESCE(
+            SUM(EXTRACT(EPOCH FROM (te.end_time - te.start_time)) - (te.break_minutes * 60)),
+            0
+          )::bigint AS tracked_seconds
+        FROM time_entries te
+        JOIN projects p ON p.id = te.project_id
+        WHERE te.user_id = ${target.userId}
+          AND p.client_id = ${target.clientId}
+          AND te.start_time >= ${new Date(overallStart + 'T00:00:00Z')}
+          AND te.start_time <= ${new Date(overallEnd + 'T23:59:59Z')}
+          AND te.deleted_at IS NULL
+          AND p.deleted_at IS NULL
+        GROUP BY DATE_TRUNC('month', te.start_time AT TIME ZONE 'UTC')
+      `);
+    }
+
+    // Map tracked seconds by period start date string
+    const trackedByPeriod = new Map<string, number>();
+    for (const row of trackedRows) {
+      // Normalise: for weekly, Postgres DATE_TRUNC('week') already gives Monday
+      const key = typeof row.period_start === 'string'
+        ? row.period_start
+        : (row.period_start as Date).toISOString().split('T')[0];
+      trackedByPeriod.set(key, Number(row.tracked_seconds));
+    }
+
+    // Index corrections by period start date
+    const correctionsByPeriod = new Map<string, number>();
     for (const c of target.corrections) {
-      const monday = getMondayOfWeek(new Date(c.date));
-      const key = monday.toISOString().split('T')[0];
-      correctionsByWeek.set(key, (correctionsByWeek.get(key) ?? 0) + c.hours);
+      const corrDateStr = c.date.toISOString().split('T')[0];
+      const period = getPeriodForDate(corrDateStr, periodType);
+      const key = period.start;
+      correctionsByPeriod.set(key, (correctionsByPeriod.get(key) ?? 0) + c.hours);
     }
 
-    const targetSecondsPerWeek = target.weeklyHours * 3600;
-    const weeks: WeekBalance[] = [];
+    const periodBalances: PeriodBalance[] = [];
     let totalBalanceSeconds = 0;
+    const isFirstPeriod = (i: number) => i === 0;
+
+    for (let i = 0; i < periods.length; i++) {
+      const period = periods[i];
+
+      // Effective start for this period (clamped to startDate for first period)
+      const effectiveStart = isFirstPeriod(i) && cmpDate(startDateStr, period.start) > 0
+        ? startDateStr
+        : period.start;
+
+      // Period target hours (with possible pro-ration on the first period)
+      const periodTargetHours = isFirstPeriod(i)
+        ? computePeriodTargetHours(period, startDateStr, target.targetHours, periodType)
+        : target.targetHours;
+
+      // Add ongoing timer seconds to the period it started in (if it belongs to this client)
+      const timerContribution =
+        ongoingTimerPeriodStart !== null && period.start === ongoingTimerPeriodStart
+          ? ongoingTimerSeconds
+          : 0;
+
+      const trackedSeconds = (trackedByPeriod.get(period.start) ?? 0) + timerContribution;
+      const correctionHours = correctionsByPeriod.get(period.start) ?? 0;
+
+      const isOngoing = cmpDate(period.start, today) <= 0 && cmpDate(today, period.end) <= 0;
+
+      let balanceSeconds: number;
+      let extra: Partial<PeriodBalance> = {};
+
+      if (isOngoing) {
+        // §6: ongoing period — expected hours based on elapsed working days
+        const workingDaysInPeriod = countWorkingDays(effectiveStart, period.end, workingDays);
+        const dailyRateHours = workingDaysInPeriod > 0 ? periodTargetHours / workingDaysInPeriod : 0;
+
+        const elapsedEnd = today < period.end ? today : period.end;
+        const elapsedWorkingDays = countWorkingDays(effectiveStart, elapsedEnd, workingDays);
+        const expectedHours = elapsedWorkingDays * dailyRateHours;
+
+        // Only count corrections up to and including today — future corrections
+        // within the ongoing period must not be counted until those days have elapsed,
+        // otherwise a +8h correction for tomorrow inflates the balance immediately.
+        const correctionHoursToDate = target.corrections.reduce((sum, c) => {
+          const d = c.date.toISOString().split('T')[0];
+          if (cmpDate(d, effectiveStart) >= 0 && cmpDate(d, today) <= 0) {
+            return sum + c.hours;
+          }
+          return sum;
+        }, 0);
+
+        balanceSeconds = Math.round(
+          (trackedSeconds + correctionHoursToDate * 3600) - expectedHours * 3600,
+        );
+
+        extra = {
+          dailyRateHours,
+          workingDaysInPeriod,
+          elapsedWorkingDays,
+          expectedHours,
+        };
+      } else {
+        // §4: completed period — simple formula
+        balanceSeconds = Math.round(
+          (trackedSeconds + correctionHours * 3600) - periodTargetHours * 3600,
+        );
+      }
 
-    for (const monday of mondays) {
-      const key = monday.toISOString().split('T')[0];
-      const sunday = getSundayOfWeek(monday);
-      const trackedSeconds = trackedByWeek.get(key) ?? 0;
-      const correctionHours = correctionsByWeek.get(key) ?? 0;
-      const effectiveTargetSeconds = targetSecondsPerWeek - correctionHours * 3600;
-      const balanceSeconds = trackedSeconds - effectiveTargetSeconds;
       totalBalanceSeconds += balanceSeconds;
 
-      weeks.push({
-        weekStart: key,
-        weekEnd: sunday.toISOString().split('T')[0],
+      periodBalances.push({
+        periodStart: period.start,
+        periodEnd: period.end,
+        targetHours: periodTargetHours,
         trackedSeconds,
-        targetSeconds: effectiveTargetSeconds,
         correctionHours,
         balanceSeconds,
+        isOngoing,
+        ...extra,
       });
     }
 
-    const currentWeek = weeks[weeks.length - 1];
+    const currentPeriod = periodBalances.find(p => p.isOngoing) ?? periodBalances[periodBalances.length - 1];
 
     return {
       id: target.id,
       clientId: target.clientId,
       clientName: target.client.name,
       userId: target.userId,
-      weeklyHours: target.weeklyHours,
-      startDate: target.startDate.toISOString().split('T')[0],
+      periodType,
+      targetHours: target.targetHours,
+      workingDays,
+      startDate: startDateStr,
       createdAt: target.createdAt.toISOString(),
       updatedAt: target.updatedAt.toISOString(),
       corrections: target.corrections.map(c => ({
@@ -311,37 +603,33 @@ export class ClientTargetService {
         createdAt: c.createdAt.toISOString(),
       })),
       totalBalanceSeconds,
-      currentWeekTrackedSeconds: currentWeek?.trackedSeconds ?? 0,
-      currentWeekTargetSeconds: currentWeek?.targetSeconds ?? targetSecondsPerWeek,
-      weeks,
+      currentPeriodTrackedSeconds: currentPeriod?.trackedSeconds ?? 0,
+      currentPeriodTargetSeconds: currentPeriod
+        ? Math.round(currentPeriod.targetHours * 3600)
+        : Math.round(target.targetHours * 3600),
+      periods: periodBalances,
+      hasOngoingTimer: ongoingTimerSeconds > 0,
     };
   }
 
-  private emptyBalance(target: {
-    id: string;
-    clientId: string;
-    userId: string;
-    weeklyHours: number;
-    startDate: Date;
-    createdAt: Date;
-    updatedAt: Date;
-    client: { id: string; name: string };
-    corrections: Array<{ id: string; date: Date; hours: number; description: string | null; createdAt: Date }>;
-  }): ClientTargetWithBalance {
+  private emptyBalance(target: TargetRecord, periodType: 'weekly' | 'monthly'): ClientTargetWithBalance {
     return {
       id: target.id,
       clientId: target.clientId,
       clientName: target.client.name,
       userId: target.userId,
-      weeklyHours: target.weeklyHours,
+      periodType,
+      targetHours: target.targetHours,
+      workingDays: target.workingDays,
       startDate: target.startDate.toISOString().split('T')[0],
       createdAt: target.createdAt.toISOString(),
       updatedAt: target.updatedAt.toISOString(),
       corrections: [],
       totalBalanceSeconds: 0,
-      currentWeekTrackedSeconds: 0,
-      currentWeekTargetSeconds: target.weeklyHours * 3600,
-      weeks: [],
+      currentPeriodTrackedSeconds: 0,
+      currentPeriodTargetSeconds: Math.round(target.targetHours * 3600),
+      periods: [],
+      hasOngoingTimer: false,
     };
   }
 }

backend/src/types/index.ts

@@ -82,13 +82,17 @@ export interface StopTimerInput {
 
 export interface CreateClientTargetInput {
   clientId: string;
-  weeklyHours: number;
-  startDate: string; // YYYY-MM-DD, always a Monday
+  targetHours: number;
+  periodType: 'weekly' | 'monthly';
+  workingDays: string[]; // e.g. ["MON","WED","FRI"]
+  startDate: string; // YYYY-MM-DD
 }
 
 export interface UpdateClientTargetInput {
-  weeklyHours?: number;
-  startDate?: string; // YYYY-MM-DD, always a Monday
+  targetHours?: number;
+  periodType?: 'weekly' | 'monthly';
+  workingDays?: string[];
+  startDate?: string; // YYYY-MM-DD
 }
 
 export interface CreateCorrectionInput {

backend/src/utils/timeUtils.ts

@@ -19,6 +19,7 @@ export async function hasOverlappingEntries(
   const count = await prisma.timeEntry.count({
     where: {
       userId,
+      deletedAt: null,
       ...(excludeId ? { id: { not: excludeId } } : {}),
       // An entry overlaps when it starts before our end AND ends after our start.
       startTime: { lt: endTime },

docs/client-targets-v2-requirements.md

@@ -0,0 +1,285 @@
+# Client Targets v2 — Feature Requirements
+
+## Overview
+
+This document defines the requirements for the second iteration of the Client Targets feature. The main additions are:
+
+- Targets can be set on a **weekly or monthly** period.
+- Each target defines a **fixed weekly working-day pattern** (e.g. Mon + Wed).
+- The balance for the **current period** is calculated proportionally based on elapsed working days, so the user can see at any point in time whether they are ahead or behind.
+- The **start date** can be any calendar day (no longer restricted to Mondays).
+- Manual **balance corrections** are preserved and continue to work as before.
+
+---
+
+## 1. Target Configuration
+
+| Field | Type | Constraints |
+|---|---|---|
+| `periodType` | `WEEKLY \| MONTHLY` | Required |
+| `weeklyOrMonthlyHours` | positive float, ≤ 168 | Required; represents hours per week or per month |
+| `workingDays` | array of day names | At least one of `MON TUE WED THU FRI SAT SUN`; fixed repeating pattern |
+| `startDate` | `YYYY-MM-DD` | Any calendar day; no longer restricted to Mondays |
+| `clientId` | UUID | Must belong to the authenticated user |
+
+**One active target per client** — the unique `(userId, clientId)` constraint is preserved. To change period type, hours, or working days the user creates a new target with a new `startDate`; the old target is soft-deleted. History from the old target is retained as-is and is no longer recalculated.
+
+---
+
+## 2. Period Definitions
+
+| `periodType` | Period start | Period end |
+|---|---|---|
+| `WEEKLY` | Monday 00:00 of the calendar week | Sunday 23:59 of that same calendar week |
+| `MONTHLY` | 1st of the calendar month 00:00 | Last day of the calendar month 23:59 |
+
+---
+
+## 3. Balance Calculation — Overview
+
+The total balance is the **sum of individual period balances** from the period containing `startDate` up to and including the **current period** (the period that contains today).
+
+Each period is classified as either **completed** or **ongoing**.
+
+```
+total_balance_seconds = SUM( balance_seconds ) over all periods
+```
+
+Positive = overtime. Negative = undertime.
+
+---
+
+## 4. Completed Period Balance
+
+A period is **completed** when its end date is strictly before today.
+
+```
+balance = tracked_hours + correction_hours - period_target_hours
+```
+
+- `period_target_hours` — see §5 (pro-ration) for the first period; full `weeklyOrMonthlyHours` for all subsequent periods.
+- `tracked_hours` — sum of all time entries for this client whose date falls within `[period_start, period_end]`.
+- `correction_hours` — sum of manual corrections whose `date` falls within `[period_start, period_end]`.
+
+No working-day logic is applied to completed periods. The target is simply the (optionally pro-rated) hours for that period.
+
+---
+
+## 5. First Period Pro-ration
+
+If `startDate` does not fall on the natural first day of a period (Monday for weekly, 1st for monthly), the target hours for that first period are pro-rated by calendar days.
+
+### Monthly
+
+```
+full_period_days      = total calendar days in that month
+remaining_days        = (last day of month) − startDate + 1   // inclusive
+period_target_hours   = (remaining_days / full_period_days) × weeklyOrMonthlyHours
+```
+
+**Example:** startDate = Jan 25, target = 40 h/month, January has 31 days.
+`remaining_days = 7`, `period_target_hours = (7 / 31) × 40 = 9.032 h`
+
+### Weekly
+
+```
+full_period_days      = 7
+remaining_days        = Sunday of that calendar week − startDate + 1   // inclusive
+period_target_hours   = (remaining_days / 7) × weeklyOrMonthlyHours
+```
+
+**Example:** startDate = Wednesday, target = 40 h/week.
+`remaining_days = 5 (Wed–Sun)`, `period_target_hours = (5 / 7) × 40 = 28.571 h`
+
+All periods after the first use the full `weeklyOrMonthlyHours`.
+
+---
+
+## 6. Ongoing Period Balance (Current Period)
+
+The current period is **ongoing** when today falls within it. The balance reflects how the user is doing *so far* — future working days within the current period are not considered.
+
+### Step 1 — Period target hours
+
+Apply §5 if this is the first period; otherwise use full `weeklyOrMonthlyHours`.
+
+### Step 2 — Daily rate
+
+```
+working_days_in_period = COUNT of days in [period_start, period_end]
+                         that match the working day pattern
+daily_rate_hours       = period_target_hours / working_days_in_period
+```
+
+The rate is fixed at the start of the period and does not change as time passes.
+
+### Step 3 — Elapsed working days
+
+```
+elapsed_working_days = COUNT of days in [period_start, TODAY] (both inclusive)
+                       that match the working day pattern
+```
+
+- If today matches the working day pattern, it is counted as a **full** elapsed working day.
+- If today does not match the working day pattern, it is not counted.
+
+### Step 4 — Expected hours so far
+
+```
+expected_hours = elapsed_working_days × daily_rate_hours
+```
+
+### Step 5 — Balance
+
+```
+tracked_hours    = SUM of time entries for this client in [period_start, today]
+correction_hours = SUM of manual corrections whose date ∈ [period_start, today]
+balance          = tracked_hours + correction_hours − expected_hours
+```
+
+### Worked example
+
+> Target: 40 h/month. Working days: Mon + Wed.
+> Current month has 4 Mondays and 4 Wednesdays → `working_days_in_period = 8`.
+> `daily_rate_hours = 40 / 8 = 5 h`.
+> 3 working days have elapsed → `expected_hours = 15 h`.
+> Tracked so far: 13 h, no corrections.
+> `balance = 13 − 15 = −2 h` (2 hours behind).
+
+---
+
+## 7. Manual Balance Corrections
+
+| Field | Type | Constraints |
+|---|---|---|
+| `date` | `YYYY-MM-DD` | Must be ≥ `startDate`; not more than one period in the future |
+| `hours` | signed float | Positive = extra credit (reduces deficit). Negative = reduces tracked credit |
+| `description` | string | Optional, max 255 chars |
+
+- The system automatically assigns a correction to the period that contains its `date`.
+- Corrections in **completed periods** are included in the completed period formula (§4).
+- Corrections in the **ongoing period** are included in the ongoing balance formula (§6).
+- Corrections in a **future period** (not yet started) are stored and will be applied when that period becomes active.
+- A correction whose `date` is before `startDate` is rejected with a validation error.
+
+---
+
+## 8. Edge Cases
+
+| Scenario | Behaviour |
+|---|---|
+| `startDate` = 1st of month / Monday | No pro-ration; `period_target_hours = weeklyOrMonthlyHours` |
+| `startDate` = last day of period | `remaining_days = 1`; target is heavily reduced (e.g. 1/31 × hours) |
+| Working pattern has no matches in the partial first period | `elapsed_working_days = 0`; `expected_hours = 0`; balance = `tracked + corrections` |
+| Current period has zero elapsed working days | `expected_hours = 0`; balance = `tracked + corrections` (cannot divide by zero — guard required) |
+| `working_days_in_period = 0` | Impossible by validation (at least one day required), but system must guard: treat as `daily_rate_hours = 0` |
+| Today is not a working day | `elapsed_working_days` does not include today |
+| Correction date before `startDate` | Rejected with a validation error |
+| Correction date in future period | Accepted and stored; applied when that period is ongoing or completed |
+| User changes working days or period type | Must create a new target with a new `startDate`; old target history is frozen |
+| Two periods with the same client exist (old soft-deleted, new active) | Only the active target's periods contribute to the displayed balance |
+| A month with only partial working day coverage (e.g. all Mondays are public holidays) | No automatic holiday handling; user adds manual corrections to compensate |
+
+---
+
+## 9. Data Model Changes
+
+### `ClientTarget` table — additions / changes
+
+| Column | Change | Notes |
+|---|---|---|
+| `period_type` | **Add** | Enum: `WEEKLY`, `MONTHLY` |
+| `working_days` | **Add** | Array/bitmask of day names: `MON TUE WED THU FRI SAT SUN` |
+| `start_date` | **Modify** | Remove "must be Monday" validation constraint |
+| `weekly_hours` | **Rename** | → `target_hours` (represents hours per week or per month depending on `period_type`) |
+
+### `BalanceCorrection` table — no structural changes
+
+Date-to-period assignment is computed at query time, not stored.
+
+---
+
+## 10. API Changes
+
+### `ClientTargetWithBalance` response shape
+
+```typescript
+interface ClientTargetWithBalance {
+  id: string
+  clientId: string
+  clientName: string
+  userId: string
+  periodType: "weekly" | "monthly"
+  targetHours: number                     // renamed from weeklyHours
+  workingDays: string[]                   // e.g. ["MON", "WED"]
+  startDate: string                       // YYYY-MM-DD
+  createdAt: string
+  updatedAt: string
+  corrections: BalanceCorrection[]
+  totalBalanceSeconds: number             // running total across all periods
+  currentPeriodTrackedSeconds: number     // replaces currentWeekTrackedSeconds
+  currentPeriodTargetSeconds: number      // replaces currentWeekTargetSeconds
+  periods: PeriodBalance[]                // replaces weeks[]
+}
+
+interface PeriodBalance {
+  periodStart: string                     // YYYY-MM-DD (Monday or 1st of month)
+  periodEnd: string                       // YYYY-MM-DD (Sunday or last of month)
+  targetHours: number                     // pro-rated for first period
+  trackedSeconds: number
+  correctionHours: number
+  balanceSeconds: number
+  isOngoing: boolean
+  // only present when isOngoing = true
+  dailyRateHours?: number
+  workingDaysInPeriod?: number
+  elapsedWorkingDays?: number
+  expectedHours?: number
+}
+```
+
+### Endpoint changes
+
+| Method | Path | Change |
+|---|---|---|
+| `POST /client-targets` | Create | Accepts `periodType`, `workingDays`, `targetHours`; `startDate` unconstrained |
+| `PUT /client-targets/:id` | Update | Accepts same new fields |
+| `GET /client-targets` | List | Returns updated `ClientTargetWithBalance` shape |
+| `POST /client-targets/:id/corrections` | Add correction | No change to signature |
+| `DELETE /client-targets/:id/corrections/:corrId` | Delete correction | No change |
+
+### Zod schema changes
+
+- `CreateClientTargetSchema` / `UpdateClientTargetSchema`:
+  - Add `periodType: z.enum(["weekly", "monthly"])`
+  - Add `workingDays: z.array(z.enum(["MON","TUE","WED","THU","FRI","SAT","SUN"])).min(1)`
+  - Rename `weeklyHours` → `targetHours`
+  - Remove Monday-only regex constraint from `startDate`
+
+---
+
+## 11. Frontend Changes
+
+### Types (`frontend/src/types/index.ts`)
+- `ClientTargetWithBalance` — add `periodType`, `workingDays`, `targetHours`; replace `weeks` → `periods: PeriodBalance[]`; replace `currentWeek*` → `currentPeriod*`
+- Add `PeriodBalance` interface
+- `CreateClientTargetInput` / `UpdateClientTargetInput` — same field additions
+
+### Hook (`frontend/src/hooks/useClientTargets.ts`)
+- No structural changes; mutations pass through new fields
+
+### API client (`frontend/src/api/clientTargets.ts`)
+- No structural changes; payload shapes updated
+
+### `ClientsPage` — `ClientTargetPanel`
+- Working day selector (checkboxes: Mon–Sun, at least one required)
+- Period type selector (Weekly / Monthly)
+- Label for hours input updates dynamically: "Hours/week" or "Hours/month"
+- Start date picker: free date input (no week-picker)
+- Balance display: label changes from "this week" to "this week" or "this month" based on `periodType`
+- Expanded period list replaces the expanded week list
+
+### `DashboardPage`
+- "Weekly Targets" widget renamed to "Targets"
+- "This week" label becomes "This week" / "This month" dynamically
+- `currentWeek*` fields replaced with `currentPeriod*`

frontend/src/components/Navbar.tsx

@@ -47,20 +47,27 @@ export function Navbar() {
       <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
         <div className="flex justify-between h-16">
           <div className="flex">
-            <div className="flex-shrink-0 flex items-center">
-              <img src="/icon.svg" alt="TimeTracker Logo" className="h-8 w-8 drop-shadow-sm" />
+            <NavLink
+              className="flex-shrink-0 flex items-center"
+              to={"/dashboard"}
+            >
+              <img
+                src="/icon.svg"
+                alt="TimeTracker Logo"
+                className="h-8 w-8 drop-shadow-sm"
+              />
               <span className="ml-2 text-xl font-bold text-gray-900">
                 TimeTracker
               </span>
-            </div>
-            <div className="hidden sm:ml-8 sm:flex sm:space-x-4">
+            </NavLink>
+            <div className="hidden sm:ml-8 sm:flex sm:space-x-4 items-center">
               {/* Main Navigation Items */}
               {mainNavItems.map((item) => (
                 <NavLink
                   key={item.to}
                   to={item.to}
                   className={({ isActive }) =>
-                    `inline-flex items-center px-3 py-2 text-sm font-medium rounded-md transition-colors ${
+                    `inline-flex items-center px-3 py-2 text-sm font-medium rounded-md transition-colors h-min ${
                       isActive
                         ? "text-primary-600 bg-primary-50"
                         : "text-gray-600 hover:text-gray-900 hover:bg-gray-50"

frontend/src/components/StatCard.tsx

@@ -3,25 +3,35 @@ interface StatCardProps {
   label: string;
   value: string;
   color: 'blue' | 'green' | 'purple' | 'orange';
+  /** When true, renders a pulsing green dot to signal a live/active state. */
+  indicator?: boolean;
 }
 
-const colorClasses: Record<StatCardProps['color'], string> = {
+const colorClasses: Record<NonNullable<StatCardProps['color']>, string> = {
   blue: 'bg-blue-50 text-blue-600',
   green: 'bg-green-50 text-green-600',
   purple: 'bg-purple-50 text-purple-600',
   orange: 'bg-orange-50 text-orange-600',
 };
 
-export function StatCard({ icon: Icon, label, value, color }: StatCardProps) {
+export function StatCard({ icon: Icon, label, value, color, indicator }: StatCardProps) {
   return (
     <div className="card p-4">
       <div className="flex items-center">
         <div className={`p-3 rounded-lg ${colorClasses[color]}`}>
           <Icon className="h-6 w-6" />
         </div>
-        <div className="ml-4">
+        <div className="ml-4 flex-1">
           <p className="text-sm font-medium text-gray-600">{label}</p>
-          <p className="text-2xl font-bold text-gray-900">{value}</p>
+          <div className="flex items-center gap-2">
+            {indicator && (
+              <span
+                className="inline-block h-2.5 w-2.5 rounded-full bg-red-500 animate-pulse"
+                title="Timer running"
+              />
+            )}
+            <p className="text-2xl font-bold text-gray-900">{value}</p>
+          </div>
         </div>
       </div>
     </div>

frontend/src/hooks/useClientTargets.ts

@@ -1,5 +1,6 @@
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { clientTargetsApi } from '@/api/clientTargets';
+import { useTimer } from '@/contexts/TimerContext';
 import type {
   CreateClientTargetInput,
   UpdateClientTargetInput,
@@ -8,10 +9,13 @@ import type {
 
 export function useClientTargets() {
   const queryClient = useQueryClient();
+  const { ongoingTimer } = useTimer();
 
   const { data: targets, isLoading, error } = useQuery({
     queryKey: ['clientTargets'],
     queryFn: clientTargetsApi.getAll,
+    // Poll every 30 s while a timer is running so the balance stays current
+    refetchInterval: ongoingTimer ? 30_000 : false,
   });
 
   const createTarget = useMutation({

frontend/src/pages/ClientsPage.tsx

@@ -14,33 +14,10 @@ import type {
   CreateCorrectionInput,
 } from '@/types';
 
-// Convert a <input type="week"> value like "2026-W07" to the Monday date "2026-02-16"
-function weekInputToMonday(weekValue: string): string {
-  const [yearStr, weekStr] = weekValue.split('-W');
-  const year = parseInt(yearStr, 10);
-  const week = parseInt(weekStr, 10);
-  // ISO week 1 is the week containing the first Thursday of January
-  const jan4 = new Date(Date.UTC(year, 0, 4));
-  const jan4Day = jan4.getUTCDay() || 7; // Mon=1..Sun=7
-  const monday = new Date(jan4);
-  monday.setUTCDate(jan4.getUTCDate() - jan4Day + 1 + (week - 1) * 7);
-  return monday.toISOString().split('T')[0];
-}
-
-// Convert a YYYY-MM-DD Monday to "YYYY-Www" for the week input
-function mondayToWeekInput(dateStr: string): string {
-  const date = new Date(dateStr + 'T00:00:00Z');
-  // ISO week number calculation
-  const jan4 = new Date(Date.UTC(date.getUTCFullYear(), 0, 4));
-  const jan4Day = jan4.getUTCDay() || 7;
-  const firstMonday = new Date(jan4);
-  firstMonday.setUTCDate(jan4.getUTCDate() - jan4Day + 1);
-  const diff = date.getTime() - firstMonday.getTime();
-  const week = Math.floor(diff / (7 * 24 * 3600 * 1000)) + 1;
-  // Handle year boundary: if week > 52 we might be in week 1 of next year
-  const year = date.getUTCFullYear();
-  return `${year}-W${week.toString().padStart(2, '0')}`;
-}
+const ALL_DAYS = ['MON', 'TUE', 'WED', 'THU', 'FRI', 'SAT', 'SUN'] as const;
+const DAY_LABELS: Record<string, string> = {
+  MON: 'Mon', TUE: 'Tue', WED: 'Wed', THU: 'Thu', FRI: 'Fri', SAT: 'Sat', SUN: 'Sun',
+};
 
 function balanceLabel(seconds: number): { text: string; color: string } {
   if (seconds === 0) return { text: '±0', color: 'text-gray-500' };
@@ -58,7 +35,12 @@ function ClientTargetPanel({
 }: {
   client: Client;
   target: ClientTargetWithBalance | undefined;
-  onCreated: (weeklyHours: number, startDate: string) => Promise<void>;
+  onCreated: (input: {
+    targetHours: number;
+    periodType: 'weekly' | 'monthly';
+    workingDays: string[];
+    startDate: string;
+  }) => Promise<void>;
   onDeleted: () => Promise<void>;
 }) {
   const { addCorrection, deleteCorrection, updateTarget } = useClientTargets();
@@ -69,7 +51,9 @@ function ClientTargetPanel({
 
   // Create/edit form state
   const [formHours, setFormHours] = useState('');
-  const [formWeek, setFormWeek] = useState('');
+  const [formPeriodType, setFormPeriodType] = useState<'weekly' | 'monthly'>('weekly');
+  const [formWorkingDays, setFormWorkingDays] = useState<string[]>(['MON', 'TUE', 'WED', 'THU', 'FRI']);
+  const [formStartDate, setFormStartDate] = useState('');
   const [formError, setFormError] = useState<string | null>(null);
   const [formSaving, setFormSaving] = useState(false);
 
@@ -81,13 +65,13 @@ function ClientTargetPanel({
   const [corrError, setCorrError] = useState<string | null>(null);
   const [corrSaving, setCorrSaving] = useState(false);
 
+  const todayIso = new Date().toISOString().split('T')[0];
+
   const openCreate = () => {
     setFormHours('');
-    const today = new Date();
-    const day = today.getUTCDay() || 7;
-    const monday = new Date(today);
-    monday.setUTCDate(today.getUTCDate() - day + 1);
-    setFormWeek(mondayToWeekInput(monday.toISOString().split('T')[0]));
+    setFormPeriodType('weekly');
+    setFormWorkingDays(['MON', 'TUE', 'WED', 'THU', 'FRI']);
+    setFormStartDate(todayIso);
     setFormError(null);
     setEditing(false);
     setShowForm(true);
@@ -95,32 +79,56 @@ function ClientTargetPanel({
 
   const openEdit = () => {
     if (!target) return;
-    setFormHours(String(target.weeklyHours));
-    setFormWeek(mondayToWeekInput(target.startDate));
+    setFormHours(String(target.targetHours));
+    setFormPeriodType(target.periodType);
+    setFormWorkingDays([...target.workingDays]);
+    setFormStartDate(target.startDate);
     setFormError(null);
     setEditing(true);
     setShowForm(true);
   };
 
+  const toggleDay = (day: string) => {
+    setFormWorkingDays(prev =>
+      prev.includes(day) ? prev.filter(d => d !== day) : [...prev, day],
+    );
+  };
+
   const handleFormSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
     setFormError(null);
     const hours = parseFloat(formHours);
     if (isNaN(hours) || hours <= 0 || hours > 168) {
-      setFormError('Weekly hours must be between 0 and 168');
+      setFormError(`${formPeriodType === 'weekly' ? 'Weekly' : 'Monthly'} hours must be between 0 and 168`);
       return;
     }
-    if (!formWeek) {
-      setFormError('Please select a start week');
+    if (formWorkingDays.length === 0) {
+      setFormError('Select at least one working day');
+      return;
+    }
+    if (!formStartDate) {
+      setFormError('Please select a start date');
       return;
     }
-    const startDate = weekInputToMonday(formWeek);
     setFormSaving(true);
     try {
       if (editing && target) {
-        await updateTarget.mutateAsync({ id: target.id, input: { weeklyHours: hours, startDate } });
+        await updateTarget.mutateAsync({
+          id: target.id,
+          input: {
+            targetHours: hours,
+            periodType: formPeriodType,
+            workingDays: formWorkingDays,
+            startDate: formStartDate,
+          },
+        });
       } else {
-        await onCreated(hours, startDate);
+        await onCreated({
+          targetHours: hours,
+          periodType: formPeriodType,
+          workingDays: formWorkingDays,
+          startDate: formStartDate,
+        });
       }
       setShowForm(false);
     } catch (err) {
@@ -185,23 +193,46 @@ function ClientTargetPanel({
           className="flex items-center gap-1.5 text-xs text-primary-600 hover:text-primary-700 font-medium"
         >
           <Target className="h-3.5 w-3.5" />
-          Set weekly target
+          Set target
         </button>
       </div>
     );
   }
 
   if (showForm) {
+    const hoursLabel = formPeriodType === 'weekly' ? 'Hours/week' : 'Hours/month';
     return (
       <div className="mt-3 pt-3 border-t border-gray-100">
         <p className="text-xs font-medium text-gray-700 mb-2">
-          {editing ? 'Edit target' : 'Set weekly target'}
+          {editing ? 'Edit target' : 'Set target'}
         </p>
         <form onSubmit={handleFormSubmit} className="space-y-2">
           {formError && <p className="text-xs text-red-600">{formError}</p>}
+
+          {/* Period type */}
+          <div>
+            <label className="block text-xs text-gray-500 mb-0.5">Period</label>
+            <div className="flex gap-2">
+              {(['weekly', 'monthly'] as const).map(pt => (
+                <label key={pt} className="flex items-center gap-1 text-xs cursor-pointer">
+                  <input
+                    type="radio"
+                    name="periodType"
+                    value={pt}
+                    checked={formPeriodType === pt}
+                    onChange={() => setFormPeriodType(pt)}
+                    className="accent-primary-600"
+                  />
+                  {pt.charAt(0).toUpperCase() + pt.slice(1)}
+                </label>
+              ))}
+            </div>
+          </div>
+
+          {/* Hours + Start Date */}
           <div className="flex gap-2">
             <div className="flex-1">
-              <label className="block text-xs text-gray-500 mb-0.5">Hours/week</label>
+              <label className="block text-xs text-gray-500 mb-0.5">{hoursLabel}</label>
               <input
                 type="number"
                 value={formHours}
@@ -215,16 +246,41 @@ function ClientTargetPanel({
               />
             </div>
             <div className="flex-1">
-              <label className="block text-xs text-gray-500 mb-0.5">Starting week</label>
+              <label className="block text-xs text-gray-500 mb-0.5">Start date</label>
               <input
-                type="week"
-                value={formWeek}
-                onChange={e => setFormWeek(e.target.value)}
+                type="date"
+                value={formStartDate}
+                onChange={e => setFormStartDate(e.target.value)}
                 className="input text-sm py-1"
                 required
               />
             </div>
           </div>
+
+          {/* Working days */}
+          <div>
+            <label className="block text-xs text-gray-500 mb-0.5">Working days</label>
+            <div className="flex gap-1 flex-wrap">
+              {ALL_DAYS.map(day => {
+                const active = formWorkingDays.includes(day);
+                return (
+                  <button
+                    key={day}
+                    type="button"
+                    onClick={() => toggleDay(day)}
+                    className={`text-xs px-2 py-0.5 rounded border font-medium transition-colors ${
+                      active
+                        ? 'bg-primary-600 border-primary-600 text-white'
+                        : 'bg-white border-gray-300 text-gray-600 hover:border-primary-400'
+                    }`}
+                  >
+                    {DAY_LABELS[day]}
+                  </button>
+                );
+              })}
+            </div>
+          </div>
+
           <div className="flex gap-2 justify-end">
             <button
               type="button"
@@ -248,6 +304,7 @@ function ClientTargetPanel({
 
   // Target exists — show summary + expandable details
   const balance = balanceLabel(target!.totalBalanceSeconds);
+  const periodLabel = target!.periodType === 'weekly' ? 'week' : 'month';
 
   return (
     <div className="mt-3 pt-3 border-t border-gray-100">
@@ -256,9 +313,15 @@ function ClientTargetPanel({
         <div className="flex items-center gap-2">
           <Target className="h-3.5 w-3.5 text-gray-400 shrink-0" />
           <span className="text-xs text-gray-600">
-            <span className="font-medium">{target!.weeklyHours}h</span>/week
+            <span className="font-medium">{target!.targetHours}h</span>/{periodLabel}
           </span>
           <span className={`text-xs font-semibold ${balance.color}`}>{balance.text}</span>
+          {target!.hasOngoingTimer && (
+            <span
+              className="inline-block h-2 w-2 rounded-full bg-green-500 animate-pulse"
+              title="Timer running — balance updates every 30 s"
+            />
+          )}
         </div>
         <div className="flex items-center gap-1">
           <button
@@ -531,8 +594,14 @@ export function ClientsPage() {
                 <ClientTargetPanel
                   client={client}
                   target={target}
-                  onCreated={async (weeklyHours, startDate) => {
-                    await createTarget.mutateAsync({ clientId: client.id, weeklyHours, startDate });
+                  onCreated={async ({ targetHours, periodType, workingDays, startDate }) => {
+                    await createTarget.mutateAsync({
+                      clientId: client.id,
+                      targetHours,
+                      periodType,
+                      workingDays,
+                      startDate,
+                    });
                   }}
                   onDeleted={async () => {
                     if (target) await deleteTarget.mutateAsync(target.id);

frontend/src/pages/DashboardPage.tsx

@@ -3,6 +3,7 @@ import { Link } from "react-router-dom";
 import { Clock, Calendar, Briefcase, TrendingUp, Target, Edit2, Trash2 } from "lucide-react";
 import { useTimeEntries } from "@/hooks/useTimeEntries";
 import { useClientTargets } from "@/hooks/useClientTargets";
+import { useTimer } from "@/contexts/TimerContext";
 import { ProjectColorDot } from "@/components/ProjectColorDot";
 import { StatCard } from "@/components/StatCard";
 import { TimeEntryFormModal } from "@/components/TimeEntryFormModal";
@@ -30,6 +31,7 @@ export function DashboardPage() {
   });
 
   const { targets } = useClientTargets();
+  const { ongoingTimer, elapsedSeconds } = useTimer();
 
   const [isModalOpen, setIsModalOpen] = useState(false);
   const [editingEntry, setEditingEntry] = useState<TimeEntry | null>(null);
@@ -54,12 +56,19 @@ export function DashboardPage() {
     }
   };
 
-  const totalTodaySeconds =
+  const completedTodaySeconds =
     todayEntries?.entries.reduce((total, entry) => {
       return total + calculateDuration(entry.startTime, entry.endTime, entry.breakMinutes);
-    }, 0) || 0;
+    }, 0) ?? 0;
 
-  const targetsWithData = targets?.filter(t => t.weeks.length > 0) ?? [];
+  // Only add the running timer if it started today (not a timer left running from yesterday)
+  const timerStartedToday =
+    ongoingTimer !== null &&
+    new Date(ongoingTimer.startTime) >= startOfDay(today);
+
+  const totalTodaySeconds = completedTodaySeconds + (timerStartedToday ? elapsedSeconds : 0);
+
+  const targetsWithData = targets?.filter(t => t.periods.length > 0) ?? [];
 
   return (
     <div className="space-y-6">
@@ -78,6 +87,7 @@ export function DashboardPage() {
           label="Today"
           value={formatDurationHoursMinutes(totalTodaySeconds)}
           color="blue"
+          indicator={timerStartedToday}
         />
         <StatCard
           icon={Calendar}
@@ -108,7 +118,7 @@ export function DashboardPage() {
         <div className="card">
           <div className="flex items-center gap-2 mb-4">
             <Target className="h-5 w-5 text-primary-600" />
-            <h2 className="text-lg font-semibold text-gray-900">Weekly Targets</h2>
+            <h2 className="text-lg font-semibold text-gray-900">Targets</h2>
           </div>
           <div className="space-y-3">
             {targetsWithData.map(target => {
@@ -116,8 +126,9 @@ export function DashboardPage() {
               const absBalance = Math.abs(balance);
               const isOver = balance > 0;
               const isEven = balance === 0;
-              const currentWeekTracked = formatDurationHoursMinutes(target.currentWeekTrackedSeconds);
-              const currentWeekTarget = formatDurationHoursMinutes(target.currentWeekTargetSeconds);
+              const currentPeriodTracked = formatDurationHoursMinutes(target.currentPeriodTrackedSeconds);
+              const currentPeriodTarget = formatDurationHoursMinutes(target.currentPeriodTargetSeconds);
+              const periodLabel = target.periodType === 'weekly' ? 'This week' : 'This month';
 
               return (
                 <div
@@ -127,23 +138,31 @@ export function DashboardPage() {
                   <div>
                     <p className="text-sm font-medium text-gray-900">{target.clientName}</p>
                     <p className="text-xs text-gray-500 mt-0.5">
-                      This week: {currentWeekTracked} / {currentWeekTarget}
-                    </p>
+                        {periodLabel}: {currentPeriodTracked} / {currentPeriodTarget}
+                      </p>
                   </div>
                   <div className="text-right">
-                    <p
-                      className={`text-sm font-bold ${
-                        isEven
-                          ? 'text-gray-500'
-                          : isOver
-                          ? 'text-green-600'
-                          : 'text-red-600'
-                      }`}
-                    >
-                      {isEven
-                        ? '±0'
-                        : (isOver ? '+' : '−') + formatDurationHoursMinutes(absBalance)}
-                    </p>
+                    <div className="flex items-center justify-end gap-1.5">
+                      {target.hasOngoingTimer && (
+                        <span
+                          className="inline-block h-2 w-2 rounded-full bg-red-500 animate-pulse"
+                          title="Timer running — balance updates every 30 s"
+                        />
+                      )}
+                      <p
+                        className={`text-sm font-bold ${
+                          isEven
+                            ? 'text-gray-500'
+                            : isOver
+                            ? 'text-green-600'
+                            : 'text-red-600'
+                        }`}
+                      >
+                        {isEven
+                          ? '±0'
+                          : (isOver ? '+' : '−') + formatDurationHoursMinutes(absBalance)}
+                      </p>
+                    </div>
                     <p className="text-xs text-gray-400">running balance</p>
                   </div>
                 </div>

frontend/src/types/index.ts

@@ -155,13 +155,19 @@ export interface BalanceCorrection {
   deletedAt: string | null;
 }
 
-export interface WeekBalance {
-  weekStart: string; // YYYY-MM-DD (Monday)
-  weekEnd: string;   // YYYY-MM-DD (Sunday)
+export interface PeriodBalance {
+  periodStart: string;        // YYYY-MM-DD
+  periodEnd: string;          // YYYY-MM-DD
+  targetHours: number;        // pro-rated for first period
   trackedSeconds: number;
-  targetSeconds: number;
   correctionHours: number;
   balanceSeconds: number;
+  isOngoing: boolean;
+  // only present when isOngoing = true
+  dailyRateHours?: number;
+  workingDaysInPeriod?: number;
+  elapsedWorkingDays?: number;
+  expectedHours?: number;
 }
 
 export interface ClientTargetWithBalance {
@@ -169,26 +175,34 @@ export interface ClientTargetWithBalance {
   clientId: string;
   clientName: string;
   userId: string;
-  weeklyHours: number;
-  startDate: string; // YYYY-MM-DD
+  periodType: "weekly" | "monthly";
+  targetHours: number;
+  workingDays: string[];      // e.g. ["MON","WED"]
+  startDate: string;          // YYYY-MM-DD
   createdAt: string;
   updatedAt: string;
   corrections: BalanceCorrection[];
   totalBalanceSeconds: number;
-  currentWeekTrackedSeconds: number;
-  currentWeekTargetSeconds: number;
-  weeks: WeekBalance[];
+  currentPeriodTrackedSeconds: number;
+  currentPeriodTargetSeconds: number;
+  periods: PeriodBalance[];
+  /** True when an active timer for a project belonging to this client is running. */
+  hasOngoingTimer: boolean;
 }
 
 export interface CreateClientTargetInput {
   clientId: string;
-  weeklyHours: number;
-  startDate: string; // YYYY-MM-DD
+  targetHours: number;
+  periodType: "weekly" | "monthly";
+  workingDays: string[];      // e.g. ["MON","WED","FRI"]
+  startDate: string;          // YYYY-MM-DD
 }
 
 export interface UpdateClientTargetInput {
-  weeklyHours?: number;
-  startDate?: string;
+  targetHours?: number;
+  periodType?: "weekly" | "monthly";
+  workingDays?: string[];
+  startDate?: string;         // YYYY-MM-DD
 }
 
 export interface CreateCorrectionInput {